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Cheap flights from St. Louis (STL) to Montreal (YMQ) from $168

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — YMQ
May 8 — May 151
From?
To?
Wed 5/8
Wed 5/15
1 adult, Economy
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The best prices from Lambert-St Louis to Montreal are usually found in January or September, booked 19 days in advance, depart on a Saturday or Friday and return on a Friday

Cheap flight deals from St. Louis to Montreal

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Montreal (YMQ). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 3, 2024.

Popular in

August

Cheapest in

January

Round-trip from

$276

One-way from

$193
High demand for flights, 13% potential price rise
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Best time to find cheap flights, 10% potential price drop
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From Lambert-St Louis to Montreal (YMQ)
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One-way flight from Lambert-St Louis to Montreal (YMQ)
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What is the cheapest day to fly round-trip from St. Louis to Montreal?

Leaving on a Friday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 51% on the overall cost on flights from St. Louis to Montreal.

How far in advance should I book a flight from St. Louis to Montreal?

Users have found that booking a flight from St. Louis to Montreal at least 20 days early can save you up to 167% on average compared to booking a flight this week. If booking 20 days before your flight isn’t an option for you, users have found flights from St. Louis to Montreal for as little as $579 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $808 for flights departing within the next 3 days.

What is the cheapest month to fly from St. Louis to Montreal?

Flights from St. Louis to Montreal lean towards being more expensive in August. Prices are generally better when you fly from St. Louis to Montreal in January, with the cheapest ticket starting at $310.

When is the cheapest time to fly from St. Louis to Montreal (STL - YMQ)?

A simple way to save on the total cost of your ticket is to fly from St. Louis to Montreal at noon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the morning.

Cheap Air Canada flights from St. Louis to Montreal

Explore cheap flight options specifically provided by Air Canada for the route between St. Louis and Montreal. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
Consider these cheap Air Canada flights we've found departing from St. Louis to Montreal. Make sure to double check the flight details before booking.
Tue 7/3012:00 pmSTL - YUL
Nonstop2h 23mAir Canada
Wed 8/287:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/2$566
Wed 7/3110:19 amSTL - YUL
1 stop7h 34mAir Canada
Thu 8/297:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/2$575
Mon 7/2910:10 amSTL - YUL
1 stop7h 08mAir Canada
Sat 8/317:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/2$577
Mon 7/2912:00 pmSTL - YUL
Nonstop2h 23mAir Canada
Thu 8/297:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/2$584
Wed 6/510:15 amSTL - YUL
1 stop7h 39mAir Canada
Fri 6/1411:10 amYUL - STL
1 stop5h 11mAir Canada
Deal found 5/3$586
Sat 7/2010:10 amSTL - YUL
1 stop5h 08mAir Canada
Thu 7/2510:10 amYUL - STL
1 stop6h 11mAir Canada
Deal found 5/2$587
Thu 8/14:05 pmSTL - YUL
1 stop14h 43mAir Canada
Sat 8/317:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/2$600
Tue 7/3012:00 pmSTL - YUL
Nonstop2h 23mAir Canada
Mon 9/28:10 amYUL - STL
1 stop8h 11mAir Canada
Deal found 5/2$618
Mon 7/2912:00 pmSTL - YUL
Nonstop2h 23mAir Canada
Mon 9/28:10 amYUL - STL
1 stop8h 11mAir Canada
Deal found 5/2$636

Cheap United Airlines flights from St. Louis to Montreal

Explore cheap flight options specifically provided by United Airlines for the route between St. Louis and Montreal. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
Some of the lowest-priced United Airlines flights we've found at this time heading from St. Louis to Montreal. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Thu 8/16:08 amSTL - YUL
1 stop6h 08mUnited Airlines
Mon 9/26:30 pmYUL - STL
1 stop5h 26mUnited Airlines
Deal found 5/2$590
Wed 7/108:05 amSTL - YUL
2 stops9h 37mUnited Airlines
Wed 7/178:20 amYUL - STL
2 stops8h 20mUnited Airlines
Deal found 5/2$623
Thu 5/166:30 amSTL - YUL
1 stop5h 46mUnited Airlines
Thu 5/236:00 amYUL - STL
2 stops10h 41mUnited Airlines
Deal found 5/2$646
Fri 5/103:15 pmSTL - YUL
2 stops15h 29mUnited Airlines
Mon 5/138:00 pmYUL - STL
2 stops15h 14mUnited Airlines
Deal found 5/3$835
Mon 5/1310:10 amSTL - YUL
2 stops10h 56mUnited Airlines
Fri 5/176:40 pmYUL - STL
2 stops16h 37mUnited Airlines
Deal found 5/2$950

Cheap St. Louis to Montreal flights in May & June 2024

Find cheap flight options from St. Louis to Montreal specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Prices were last updated on May 3, 2024.
These are some of the best deals we've found on flights to Montreal in 2024 at this time. Check back regularly for other flight deals.
Thu 5/167:30 pmSTL - YUL
2 stops17h 30mMultiple Airlines
Mon 5/201:05 pmYUL - STL
2 stops21h 34mMultiple Airlines
Deal found 5/3$362
Thu 5/307:44 pmSTL - YUL
1 stop17h 36mMultiple Airlines
Thu 6/66:50 amYUL - STL
1 stop11h 38mMultiple Airlines
Deal found 5/2$371
Thu 5/307:30 pmSTL - YUL
2 stops18h 30mMultiple Airlines
Thu 6/66:50 amYUL - STL
1 stop11h 38mMultiple Airlines
Deal found 5/2$388
Thu 5/167:30 pmSTL - YUL
2 stops17h 30mMultiple Airlines
Thu 5/232:45 pmYUL - STL
3 stops22h 20mMultiple Airlines
Deal found 5/2$389
Thu 5/167:30 pmSTL - YUL
3 stops28h 03mMultiple Airlines
Mon 5/206:50 amYUL - STL
1 stop27h 49mMultiple Airlines
Deal found 5/2$403
Thu 5/306:19 pmSTL - YUL
3 stops27h 31mMultiple Airlines
Thu 6/66:50 amYUL - STL
1 stop11h 38mMultiple Airlines
Deal found 5/2$417
Thu 5/167:30 pmSTL - YUL
2 stops17h 30mMultiple Airlines
Thu 5/232:45 pmYUL - STL
2 stops25h 29mMultiple Airlines
Deal found 5/2$418
Sun 6/27:30 pmSTL - YUL
2 stops18h 30mMultiple Airlines
Sun 6/96:50 amYUL - STL
1 stop10h 42mMultiple Airlines
Deal found 5/3$424
Sat 6/15:15 pmSTL - YUL
1 stop20h 45mMultiple Airlines
Sat 6/86:50 amYUL - STL
1 stop11h 38mMultiple Airlines
Deal found 5/2$425

St. Louis to Montreal 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Montreal in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
These are some of the best deals we've found on flights to Montreal in 2024 at this time. Check back regularly for other flight deals.
Thu 5/167:30 pmSTL - YUL
2 stops17h 30mMultiple Airlines
Mon 5/201:05 pmYUL - STL
2 stops21h 34mMultiple Airlines
Deal found 5/3$362
Thu 5/307:44 pmSTL - YUL
1 stop17h 36mMultiple Airlines
Thu 6/66:50 amYUL - STL
1 stop11h 38mMultiple Airlines
Deal found 5/2$371
Thu 5/307:30 pmSTL - YUL
2 stops18h 30mMultiple Airlines
Thu 6/66:50 amYUL - STL
1 stop11h 38mMultiple Airlines
Deal found 5/2$388
Thu 5/167:30 pmSTL - YUL
2 stops17h 30mMultiple Airlines
Thu 5/232:45 pmYUL - STL
3 stops22h 20mMultiple Airlines
Deal found 5/2$389
Thu 5/167:30 pmSTL - YUL
3 stops28h 03mMultiple Airlines
Mon 5/206:50 amYUL - STL
1 stop27h 49mMultiple Airlines
Deal found 5/2$403
Thu 5/306:19 pmSTL - YUL
3 stops27h 31mMultiple Airlines
Thu 6/66:50 amYUL - STL
1 stop11h 38mMultiple Airlines
Deal found 5/2$417
Thu 5/167:30 pmSTL - YUL
2 stops17h 30mMultiple Airlines
Thu 5/232:45 pmYUL - STL
2 stops25h 29mMultiple Airlines
Deal found 5/2$418
Sun 6/27:30 pmSTL - YUL
2 stops18h 30mMultiple Airlines
Sun 6/96:50 amYUL - STL
1 stop10h 42mMultiple Airlines
Deal found 5/3$424
Sat 6/15:15 pmSTL - YUL
1 stop20h 45mMultiple Airlines
Sat 6/86:50 amYUL - STL
1 stop11h 38mMultiple Airlines
Deal found 5/2$425

Non-stop flights to Montreal from St. Louis

Discover non-stop flight options from St. Louis to Montreal. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
Consider booking one of these non-stop flights heading from St. Louis to Montreal. Users can also choose from other St. Louis to Montreal flights by using the search form above.
Tue 7/3012:00 pmSTL - YUL
Nonstop2h 23mAir Canada
Wed 8/287:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/2$566
Mon 7/2912:00 pmSTL - YUL
Nonstop2h 23mAir Canada
Thu 8/297:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/2$584
Sat 9/1412:00 pmSTL - YUL
Nonstop2h 23mAir Canada
Tue 10/17:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/2$609
Thu 8/112:00 pmSTL - YUL
Nonstop2h 23mAir Canada
Mon 8/57:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/2$640
Thu 5/1611:00 amSTL - YUL
Nonstop2h 23mAir Canada
Thu 5/237:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/2$654
Mon 7/2912:00 pmSTL - YUL
Nonstop2h 23mAir Canada
Mon 9/27:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/2$658
Mon 7/1512:00 pmSTL - YUL
Nonstop2h 23mAir Canada
Sat 7/207:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/2$681
Sat 7/2012:00 pmSTL - YUL
Nonstop2h 23mMultiple Airlines
Wed 7/317:30 pmYUL - STL
Nonstop2h 35mMultiple Airlines
Deal found 5/2$723
Thu 5/1611:00 amSTL - YUL
Nonstop2h 23mAir Canada
Mon 5/207:30 pmYUL - STL
Nonstop2h 35mAir Canada
Deal found 5/3$727

St. Louis to Montreal flights leaving soon

Find last-minute flight options from St. Louis to Montreal for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
Users seeking a last-minute flight from St. Louis to Montreal should consider booking one of these fares. Users should be sure to double check the price, date, and time of their last-minute flight.
Thu 5/167:30 pmSTL - YUL
2 stops17h 30mMultiple Airlines
Mon 5/201:05 pmYUL - STL
2 stops21h 34mMultiple Airlines
Deal found 5/3$362
Thu 5/167:30 pmSTL - YUL
2 stops17h 30mMultiple Airlines
Thu 5/232:45 pmYUL - STL
3 stops22h 20mMultiple Airlines
Deal found 5/2$389
Thu 5/167:30 pmSTL - YUL
3 stops28h 03mMultiple Airlines
Mon 5/206:50 amYUL - STL
1 stop27h 49mMultiple Airlines
Deal found 5/2$403
Thu 5/167:30 pmSTL - YUL
2 stops17h 30mMultiple Airlines
Thu 5/232:45 pmYUL - STL
2 stops25h 29mMultiple Airlines
Deal found 5/2$418
Thu 5/167:30 pmSTL - YUL
3 stops28h 03mMultiple Airlines
Mon 5/201:05 pmYUL - STL
2 stops21h 34mMultiple Airlines
Deal found 5/2$434
Thu 5/167:30 pmSTL - YUL
3 stops28h 03mMultiple Airlines
Sun 5/196:45 amYUL - STL
1 stop12h 55mMultiple Airlines
Deal found 5/2$436
Thu 5/167:30 pmSTL - YUL
3 stops28h 03mMultiple Airlines
Mon 5/207:00 amYUL - STL
3 stops27h 39mMultiple Airlines
Deal found 5/2$448
Thu 5/167:30 pmSTL - YUL
3 stops21h 30mMultiple Airlines
Thu 5/232:45 pmYUL - STL
3 stops22h 20mMultiple Airlines
Deal found 5/2$451
Thu 5/167:30 pmSTL - YUL
2 stops17h 30mMultiple Airlines
Mon 5/201:05 pmYUL - STL
1 stop8h 21mMultiple Airlines
Deal found 5/3$467

One-way flights to Montreal from St. Louis

Search for one-way flight options from St. Louis to Montreal. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
Take a look at some of the best available options we've come across on one-way flights from St. Louis to Montreal. Users needing a return flight from St. Louis to Montreal should utilize the search form above.
Sun 6/305:45 pmSTL - YUL
1 stop15h 56mSun Country Air
Deal found 5/2$168
Tue 5/142:35 pmSTL - YUL
2 stops22h 25mMultiple Airlines
Deal found 5/2$176
Sun 7/76:15 pmSTL - YUL
1 stop15h 30mSun Country Air
Deal found 5/1$193
Tue 5/1410:34 amSTL - YUL
1 stop26h 26mMultiple Airlines
Deal found 5/2$196
Tue 5/1412:00 pmSTL - YUL
3 stops25h 00mMultiple Airlines
Deal found 5/2$218
Tue 7/93:23 pmSTL - YUL
1 stop22h 37mMultiple Airlines
Deal found 5/2$252
Tue 7/93:23 pmSTL - YUL
3 stops19h 52mMultiple Airlines
Deal found 5/2$253
Tue 7/91:10 pmSTL - YUL
1 stop8h 52mDelta
Deal found 5/1$256
Fri 7/511:25 amSTL - YUL
1 stop6h 28mAir Canada
Deal found 5/2$266

Find flights from St. Louis to Montreal within your budget

Customize your flight search to find flights from St. Louis to Montreal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$362 - $671

Route

Depart

Return

Price

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Thu 5/16

2 stops17h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 5/20

2 stops21h 34m

$362

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Thu 5/30

1 stop17h 36m

Montreal Pierre Elliott Trudeau Intl

Thu 6/6

1 stop11h 38m

$371

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Thu 5/30

2 stops18h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 6/6

1 stop11h 38m

$388

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Thu 5/16

2 stops17h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 5/23

3 stops22h 20m

$389

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Sat 6/15

1 stop5h 29m

Montreal Pierre Elliott Trudeau Intl

Tue 6/18

1 stop9h 11m

$510

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Tue 7/30

Nonstop2h 23m

Montreal Pierre Elliott Trudeau Intl

Wed 8/28

Nonstop2h 35m

$566

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Thu 8/1

1 stop6h 08m

Montreal Pierre Elliott Trudeau Intl

Mon 9/2

1 stop5h 26m

$590

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Tue 7/16

2 stops8h 37m

Montreal Pierre Elliott Trudeau Intl

Fri 7/19

1 stop10h 22m

$634

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Thu 5/16

1 stop10h 14m

Montreal Pierre Elliott Trudeau Intl

Sun 5/19

1 stop5h 56m

$671

Flights are sorted by cheapest first

Deals found on 5/3

When is the best time to book a flight from St. Louis to Montreal?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Montreal. Price data was last updated on January 28, 2024.
The best time to book flights from St. Louis to Montreal is 19 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

When is the cheapest time to fly from St. Louis to Montreal?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Montreal. Price data was last updated on April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Montreal flight should consider departing on Saturday at noon when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Montreal by month

Plan your trip from St. Louis to Montreal by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Montreal is currently $220 while a round-trip flight costs $498. Price data was last updated on April 28, 2024.

Currently, February is the cheapest month in which you can book a flight from St. Louis to Montreal (average of $245). Flying from St. Louis to Montreal in July is currently the most expensive (average of $458). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$267

February

$245

March

$313

April

$312

May

$345

June

$429

July

$458

August

$437

September

$387

October

$336

November

$299

December

$274

Temperature and rainfall in Montreal by month

Plan your trip to Montreal by taking into account the average temperature and rainfall totals by month.

YMQ

Temperature

15.8 - 71.6 °F

Reviews of airlines servicing Montreal

Get insights into the airlines that provide service to Montreal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Montreal. Reviews last updated May 3, 2024.
Read through reviews of airlines operating flights from St. Louis to Montreal, such as Air Canada, United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,848 reviews
Check prices

Overall

8.1

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.4

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.1
Very good
10,848 reviews
Delta
8.1
Very good
10,848 reviews
Check prices

Overall

8.1

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.4

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

WestJet
7.6
Good
2,965 reviews
Delta
8.1
Very good
10,848 reviews
Check prices

Overall

8.1

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.4

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

United Airlines
7.4
Good
11,134 reviews
Delta
8.1
Very good
10,848 reviews
Check prices

Overall

8.1

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.4

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

American Airlines
7.3
Good
14,755 reviews
Delta
8.1
Very good
10,848 reviews
Check prices

Overall

8.1

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.4

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Sun Country Air
7.3
Good
649 reviews
Delta
8.1
Very good
10,848 reviews
Check prices

Overall

8.1

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.4

Comfort

7.9

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Montreal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Montreal?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Montreal. On average, Lambert-St Louis has 0 outbound flights to Montreal per day from 4 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • Can I find flights from St. Louis to Montreal for under $400 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Montreal for under $400. The cheapest flight booked recently is on Multiple Airlines for just $362, but on average you can expect to pay $426.

  • Are there nonstop flights from St. Louis to Montreal for under $600 on Cheapflights?

    Cheapflights has at least 20 direct flights from St. Louis to Montreal under $600. A good price for a nonstop flight from St. Louis to Montreal is less than $767.

  • Are there last-minute flights available from St. Louis to Montreal for under $400?

    There are currently 20+ open flights from St. Louis to Montreal within the next 7 days for less than $400.

  • What is the cheapest airline to fly from St. Louis to Montreal round-trip?

    Cheapflights users have booked flights from St. Louis to Montreal round-trip from $510. Delta is currently priced 12% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from St. Louis to Montreal one-way?

    The cheapest airline one-way is Sun Country Air, with whom users have recently found tickets for as low as $168. However, be on the lookout for offers from Delta and Air Canada, as they are both options that can get you from St. Louis to Montreal for a low price.

  • What are the most popular airlines that fly from St. Louis to Montreal?

    Before booking your flight from St. Louis to Montreal check out the most popular airlines for this route: American Airlines, Air Canada or Delta.

  • What are the cheapest flights from St. Louis to Montreal?

    Looking at all options, your cheapest flight can be booked for $274. While the most popular route (Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl) can be booked for $361 on average our data indicates $935 when flying from St. Louis to Montreal.

  • What does STL to YUL mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Lambert-St Louis Airport to Montreal Pierre Elliott Trudeau Intl Airport flight would often be abbreviated as a STL to YUL flight. Montreal St Hubert Airport (YHU) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from St. Louis to Montreal that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Montreal flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Montreal with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Montreal flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Montreal that include hotel bookings?

    Yes. In addition to deals on St. Louis to Montreal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Montreal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Montreal.

  • Can I find deals for business class flights from St. Louis to Montreal?

    Yes. Cheapflights offers flight deals from St. Louis to Montreal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Montreal that allow pets onboard?

    Many airlines flying from St. Louis to Montreal offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Montreal?

    Yes, you can often find last-minute deals on St. Louis to Montreal flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Montreal flight deals updated?

    The St. Louis to Montreal flight deals you see on this page were last updated on 5/3.

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Alternative routes for St. Louis to Montreal
See prices for flight routes from nearby airports that may be better suited for you.

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Top 4 airlines flying from St. Louis to Montreal

Discover the top 4 airlines that operate flights from St. Louis to Montreal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 3, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$237Average$503FlexibilityNo cancel feeOn-time69%
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Air CanadaCheapest$258Average$606FlexibilityNo cancel feeOn-time67%
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American AirlinesCheapest$274Average$502FlexibilityNo cancel feeOn-time71%
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DeltaCheapest$383Average$599FlexibilityNo cancel feeOn-timeN/A
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Search flights from St. Louis to Montreal by cabin class

Find flights from St. Louis to Montreal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

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How does Cheapflights help users find flights from St. Louis to Montreal?

Cheapflights helps you search for flights from St. Louis to Montreal via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Montreal?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Montreal from St. Louis.

Can Cheapflights find flights from St. Louis to Montreal with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from St. Louis to Montreal, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from St. Louis to Montreal become cheaper?

Yes, Cheapflights offers price alerts on St. Louis to Montreal flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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