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Cheap flights from St. Louis (STL) to Keflavik Intl (KEF) from $369

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 7/21. 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 — KEF
May 10 — May 171
From?
To?
Fri 5/10
Fri 5/17
1 adult, Economy
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Cheap flight deals from St. Louis to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Keflavik Intl (KEF). 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 5, 2024.

Popular in

May

Cheapest in

January

Average price

$1,250

Round-trip from

$336
High demand for flights, 21% potential price rise
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Best time to find cheap flights, 30% potential price drop
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Average for round-trip flights in May 2024
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From Lambert-St Louis to Reykjavik Keflavik Intl
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What is the cheapest day to fly round-trip from St. Louis to Reykjavik Keflavik Intl Airport?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 55% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from St. Louis to Reykjavik Keflavik Intl Airport?

Find a great deal and save up to 38% by booking at least 42 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Reykjavik Keflavik Intl Airport within the next two weeks, with the cheapest ticket starting at $1,053.

What is the cheapest month to fly from St. Louis to Reykjavik Keflavik Intl Airport?

The best pricing can be found in the month of February. Prices to Reykjavik Keflavik Intl Airport from St. Louis average $1,090. You can even find prices in February for less than $1,090, as users have found deals to Reykjavik Keflavik Intl Airport from as low as $784. The month of November appears to be one of the more expensive times to travel to Reykjavik Keflavik Intl Airport from St. Louis. Flying in the targeted month can save you up to 49%.

When is the cheapest time to fly from St. Louis to Reykjavik Keflavik Intl Airport (STL - KEF)?

When flying from St. Louis to Reykjavik Keflavik Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 11% versus a flight at noon.

Cheap Delta flights from St. Louis to Keflavik Intl

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Keflavik Intl. 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 2,795,183 searches. Data last updated May 5, 2024.
Take a peek at the cheapest Delta flights we've detected traveling from St. Louis to Reykjavik. Be sure to come back soon if the deals available don't appeal to you at this time.
Sun 9/296:45 amSTL - KEF
1 stop18h 35mDelta
Wed 10/98:50 amKEF - STL
1 stop16h 41mDelta
Deal found 5/4$590
Sun 9/299:40 amSTL - KEF
1 stop18h 50mDelta
Wed 10/98:50 amKEF - STL
2 stops19h 45mDelta
Deal found 5/4$595
Tue 10/112:00 pmSTL - KEF
1 stop16h 30mDelta
Wed 10/911:25 amKEF - STL
1 stop14h 25mDelta
Deal found 5/4$640
Tue 10/12:05 pmSTL - KEF
2 stops14h 25mDelta
Wed 10/98:50 amKEF - STL
2 stops17h 00mDelta
Deal found 5/4$645
Thu 10/32:05 pmSTL - KEF
1 stop11h 15mDelta
Wed 10/911:25 amKEF - STL
1 stop14h 25mDelta
Deal found 5/4$740
Thu 10/36:30 amSTL - KEF
2 stops18h 50mDelta
Wed 10/911:25 amKEF - STL
2 stops27h 06mDelta
Deal found 5/4$745
Wed 10/212:00 pmSTL - KEF
1 stop16h 30mDelta
Wed 10/911:25 amKEF - STL
1 stop14h 25mDelta
Deal found 5/4$746
Thu 7/411:25 amSTL - KEF
1 stop13h 51mDelta
Sat 7/139:30 amKEF - STL
1 stop17h 06mDelta
Deal found 5/4$991
Tue 10/12:05 pmSTL - KEF
1 stop11h 15mDelta
Thu 10/311:25 amKEF - STL
2 stops17h 10mDelta
Deal found 5/4$1,401

Cheap Air France flights from St. Louis to Keflavik Intl

Explore cheap flight options specifically provided by Air France for the route between St. Louis and Keflavik Intl. 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 2,795,183 searches. Data last updated May 5, 2024.
To aid your search, here are some of the cheapest Air France flights we've found from St. Louis to Reykjavik. Deals are refreshing constantly so come back soon for more options.
Sun 9/292:05 pmSTL - KEF
1 stop11h 15mAir France
Wed 10/98:50 amKEF - STL
1 stop13h 37mAir France
Deal found 5/4$690
Thu 5/232:18 pmSTL - KEF
1 stop11h 02mAir France
Thu 5/3011:25 amKEF - STL
2 stops15h 09mAir France
Deal found 5/4$1,216

Cheap St. Louis to Keflavik Intl flights in May & June 2024

Find cheap flight options from St. Louis to Keflavik Intl specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,795,183 searches. Prices were last updated on May 5, 2024.
These are some of the most attractive deals on flights from St. Louis to Reykjavik in 2024. Check back soon for alternative fares.
Fri 5/319:50 amSTL - KEF
1 stop17h 45mAir Canada
Fri 6/710:00 amKEF - STL
1 stop10h 21mAir Canada
Deal found 5/3$768
Fri 5/319:50 amSTL - KEF
1 stop17h 45mAir Canada
Fri 6/710:00 amKEF - STL
2 stops34h 41mAir Canada
Deal found 5/3$777
Fri 5/318:05 amSTL - KEF
2 stops17h 55mMultiple Airlines
Fri 6/710:00 amKEF - STL
2 stops16h 05mMultiple Airlines
Deal found 5/3$856
Sun 6/165:22 pmSTL - KEF
2 stops30h 23mMultiple Airlines
Thu 6/203:05 pmKEF - STL
2 stops28h 11mMultiple Airlines
Deal found 5/3$866
Fri 5/174:05 pmSTL - KEF
2 stops59h 10mMultiple Airlines
Fri 5/244:45 pmKEF - STL
1 stop32h 45mMultiple Airlines
Deal found 5/3$878
Sun 6/165:22 pmSTL - KEF
2 stops30h 23mMultiple Airlines
Thu 6/209:35 amKEF - STL
3 stops33h 41mMultiple Airlines
Deal found 5/3$918
Sun 6/26:30 amSTL - KEF
1 stop21h 00mMultiple Airlines
Sun 6/910:00 amKEF - STL
2 stops34h 21mMultiple Airlines
Deal found 5/3$926
Mon 6/174:05 pmSTL - KEF
1 stop11h 30mAir Canada
Mon 6/2410:00 amKEF - STL
1 stop16h 05mAir Canada
Deal found 5/4$932
Fri 6/711:00 amSTL - KEF
1 stop16h 35mAir Canada
Tue 6/1810:00 amKEF - STL
2 stops34h 41mAir Canada
Deal found 5/4$936

St. Louis to Keflavik Intl 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Keflavik Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 5, 2024.
These are some of the most attractive deals on flights from St. Louis to Reykjavik in 2024. Check back soon for alternative fares.
Sun 9/293:40 pmSTL - KEF
1 stop12h 50mDelta
Wed 10/911:25 amKEF - STL
1 stop14h 25mDelta
Deal found 5/4$590
Sun 9/2911:51 amSTL - KEF
2 stops16h 39mDelta
Wed 10/98:50 amKEF - STL
2 stops17h 00mDelta
Deal found 5/4$595
Wed 9/256:02 amSTL - KEF
1 stop19h 58mMultiple Airlines
Fri 10/410:00 amKEF - STL
2 stops40h 05mMultiple Airlines
Deal found 5/2$636
Mon 10/146:45 amSTL - KEF
1 stop18h 35mDelta
Mon 10/218:50 amKEF - STL
1 stop16h 41mDelta
Deal found 5/3$640
Sun 8/2512:00 pmSTL - KEF
1 stop15h 35mAir Canada
Sun 9/110:00 amKEF - STL
1 stop10h 21mAir Canada
Deal found 5/3$642
Mon 10/1411:51 amSTL - KEF
2 stops16h 39mDelta
Mon 10/218:50 amKEF - STL
2 stops29h 01mDelta
Deal found 5/3$645
Sun 8/2512:00 pmSTL - KEF
2 stops15h 35mAir Canada
Sun 9/110:00 amKEF - STL
1 stop10h 21mAir Canada
Deal found 5/3$648
Sun 8/2511:51 amSTL - KEF
2 stops16h 39mKLM
Sun 9/111:25 amKEF - STL
2 stops12h 49mKLM
Deal found 5/3$655
Mon 10/146:30 amSTL - KEF
2 stops19h 30mUnited Airlines
Mon 10/2111:00 amKEF - STL
2 stops28h 07mUnited Airlines
Deal found 5/2$657

St. Louis to Keflavik Intl flights leaving soon

Find last-minute flight options from St. Louis to Keflavik Intl 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 2,795,183 searches. Data last updated May 5, 2024.
Have a look at some of the last-minute flights available departing from St. Louis to Reykjavik. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Fri 5/109:59 amSTL - KEF
2 stops18h 31mKLM
Fri 5/1711:25 amKEF - STL
2 stops17h 15mKLM
Deal found 5/3$1,076
Fri 5/1011:00 amSTL - KEF
2 stops31h 20mMultiple Airlines
Thu 5/1612:10 amKEF - STL
2 stops24h 51mMultiple Airlines
Deal found 5/3$1,108
Fri 5/103:25 pmSTL - KEF
1 stop16h 30mMultiple Airlines
Thu 5/1612:10 amKEF - STL
2 stops24h 51mMultiple Airlines
Deal found 5/3$1,117
Fri 5/103:25 pmSTL - KEF
1 stop16h 30mMultiple Airlines
Fri 5/177:45 pmKEF - STL
1 stop22h 51mMultiple Airlines
Deal found 5/3$1,307
Fri 5/101:00 pmSTL - KEF
2 stops18h 55mMultiple Airlines
Fri 5/175:00 pmKEF - STL
3 stops28h 25mMultiple Airlines
Deal found 5/3$1,750

One-way flights to Keflavik Intl from St. Louis

Search for one-way flight options from St. Louis to Keflavik Intl. 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 2,795,183 searches. Data last updated May 5, 2024.
Users traveling one-way from St. Louis to Reykjavik can select one of these great deals. Those seeking round-trip flights from St. Louis to Reykjavik should utilize the search form at the the top of the page.
Sun 7/2112:00 pmSTL - KEF
1 stop15h 35mAir Canada
Deal found 5/4$369
Mon 7/222:10 pmSTL - KEF
1 stop11h 10mAir France
Deal found 5/4$374
Wed 10/24:05 pmSTL - KEF
1 stop11h 30mAir Canada
Deal found 5/4$375
Sat 10/55:34 pmSTL - KEF
2 stops32h 26mUnited Airlines
Deal found 5/4$392
Tue 10/15:34 pmSTL - KEF
3 stops32h 26mUnited Airlines
Deal found 5/4$397
Tue 7/233:14 pmSTL - KEF
1 stop13h 16mDelta
Deal found 5/4$413
Thu 10/36:45 amSTL - KEF
1 stop18h 35mDelta
Deal found 5/4$424
Thu 10/36:30 amSTL - KEF
2 stops18h 50mDelta
Deal found 5/4$429
Tue 8/611:11 amSTL - KEF
3 stops36h 44mMultiple Airlines
Deal found 5/4$430

Find flights from St. Louis to Keflavik Intl within your budget

Customize your flight search to find flights from St. Louis to Keflavik Intl 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 2,795,183 searches. Data last updated May 5, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$590 - $1,351

Route

Depart

Return

Price

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Sun 9/29

1 stop18h 35m

Reykjavik Keflavik Intl

Wed 10/9

1 stop16h 41m

$590

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Sun 9/29

1 stop18h 50m

Reykjavik Keflavik Intl

Wed 10/9

2 stops19h 45m

$595

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Wed 9/25

1 stop19h 58m

Reykjavik Keflavik Intl

Fri 10/4

2 stops40h 05m

$636

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Sun 9/29

1 stop11h 15m

Reykjavik Keflavik Intl

Wed 10/9

1 stop13h 37m

$690

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Wed 9/25

2 stops14h 50m

Reykjavik Keflavik Intl

Fri 10/4

2 stops40h 05m

$691

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Tue 9/17

1 stop10h 12m

Reykjavik Keflavik Intl

Thu 9/26

1 stop10h 05m

$707

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Thu 9/12

2 stops35h 30m

Reykjavik Keflavik Intl

Sat 9/21

2 stops39h 00m

$719

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Tue 8/6

2 stops16h 39m

Reykjavik Keflavik Intl

Wed 8/14

2 stops12h 49m

$750

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Sun 9/29

2 stops22h 34m

Reykjavik Keflavik Intl

Wed 10/9

3 stops27h 09m

$1,351

Flights are sorted by cheapest first

Deals found on 5/4

When is the best time to book a flight from St. Louis to Reykjavik Keflavik Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Keflavik Intl. Price data was last updated on January 28, 2024.
To ensure you get the cheapest price possible for a flight from St. Louis to Reykjavik Keflavik Intl Airport, you should look to book at least 77 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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When is the cheapest time to fly from St. Louis to Reykjavik Keflavik Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Keflavik Intl. 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 Reykjavik Keflavik Intl Airport flight should consider departing on Sunday afternoons when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to Keflavik Intl by month

Plan your trip from St. Louis to Keflavik Intl by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Keflavik Intl is currently $400 while a round-trip flight costs $748. Price data was last updated on April 28, 2024.

Currently, January is the cheapest month in which you can book a flight from St. Louis to Reykjavik Keflavik Intl Airport (average of $339). Flying from St. Louis to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $742). 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

$339

February

$393

March

$460

April

$519

May

$534

June

$687

July

$742

August

$670

September

$697

October

$498

November

$368

December

$406

Temperature and rainfall in Keflavik Intl by month

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

KEF

Temperature

32 - 51.8 °F

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. 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 Keflavik Intl. Reviews last updated May 5, 2024.
To help decide which airline to fly from St. Louis to Reykjavik, see what other customers have to say about Delta, Air France and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,838 reviews
Check prices

Food

7.4

Boarding

8.2

Entertainment

8.0

Crew

8.6

Overall

8.1

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
10,838 reviews
Delta
8.1
Very good
10,838 reviews
Check prices

Food

7.4

Boarding

8.2

Entertainment

8.0

Crew

8.6

Overall

8.1

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.

KLM
7.9
Good
1,604 reviews
Delta
8.1
Very good
10,838 reviews
Check prices

Food

7.4

Boarding

8.2

Entertainment

8.0

Crew

8.6

Overall

8.1

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.

Austrian Airlines
7.7
Good
1,075 reviews
Delta
8.1
Very good
10,838 reviews
Check prices

Food

7.4

Boarding

8.2

Entertainment

8.0

Crew

8.6

Overall

8.1

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.

Air France
7.6
Good
1,786 reviews
Delta
8.1
Very good
10,838 reviews
Check prices

Food

7.4

Boarding

8.2

Entertainment

8.0

Crew

8.6

Overall

8.1

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
14,728 reviews
Delta
8.1
Very good
10,838 reviews
Check prices

Food

7.4

Boarding

8.2

Entertainment

8.0

Crew

8.6

Overall

8.1

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 Keflavik Intl. 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 Reykjavik Keflavik Intl?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to Reykjavik Keflavik Intl from St. Louis. Booking flights from Lambert-St Louis (STL) to Reykjavik Keflavik Intl should be relatively easy as there are 0 daily outbound flights to Reykjavik Keflavik Intl from 4 different airlines.

  • Can I find flights from St. Louis to Reykjavik Keflavik Intl Airport for under $600 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Reykjavik Keflavik Intl Airport for under $600. The cheapest flight booked recently is on Delta for just $590, but on average you can expect to pay $700.

  • Are there last-minute flights available from St. Louis to Reykjavik Keflavik Intl Airport for under $1,100?

    There are currently 5+ open flights from St. Louis to Reykjavik Keflavik Intl Airport within the next 7 days for less than $1,100.

  • What are the cheapest airlines flying from St. Louis to Reykjavik Keflavik Intl Airport round-trip?

    Our cheapest airline available from St. Louis to Reykjavik Keflavik Intl Airport is Delta. Our recent data shows that you can find tickets from as low as $590 on this airline. Additional options worth looking into are Air France and United Airlines, starting at $690 and $707 round-trip. Delta is 40% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Reykjavik Keflavik Intl Airport one-way?

    $369 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Air France and United Airlines, with prices starting from $374 and $392, respectively.

  • What are the most popular airlines that fly from St. Louis to Reykjavik Keflavik Intl Airport?

    Before booking your flight from St. Louis to Reykjavik Keflavik Intl Airport check out the most popular airlines for this route: Air Canada, British Airways or Delta.

  • What does STL to KEF mean?

    STL stands for Lambert-St Louis Airport, while KEF stands for Reykjavik Keflavik Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

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

    The amount of baggage you can bring on your St. Louis to Keflavik Intl 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 Keflavik Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Keflavik Intl 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 Keflavik Intl that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Keflavik Intl 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 Keflavik Intl that allow pets onboard?

    Many airlines flying from St. Louis to Keflavik Intl 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 Keflavik Intl?

    Yes, you can often find last-minute deals on St. Louis to Keflavik Intl 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 Reykjavik Keflavik Intl Airport flight deals updated?

    The St. Louis to Reykjavik Keflavik Intl Airport flight deals you see on this page were last updated on 5/4.

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Alternative routes for St. Louis to Keflavik Intl
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 Keflavik Intl

Discover the top 4 airlines that operate flights from St. Louis to Keflavik Intl. 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 2,795,183 searches. Data last updated May 5, 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$690Average$1,058FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest$695Average$757FlexibilityNo cancel feeOn-time70%
Search British Airways flights
DeltaCheapest$724Average$1,012FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$813Average$1,202FlexibilityNo cancel feeOn-time69%
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