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Cheap flights from St. Louis (STL) to Belfast from $751

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/14. 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 — BHD
May 4 — May 111
From?
To?
Sat 5/4
Sat 5/11
1 adult, Economy
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Cheap flight deals from St. Louis to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Belfast (BF1). 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 April 29, 2024.

Round-trip from

$640
From Lambert-St Louis to Belfast
Search Deals

What is the cheapest day to fly round-trip from St. Louis to Belfast?

Flights from St. Louis to Belfast are found to be more expensive on Tuesday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Belfast.

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

When flying from St. Louis to Belfast, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 23% versus a flight at noon.

Cheap American Airlines flights from St. Louis to Belfast

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Belfast. 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 2,948,547 searches. Data last updated April 29, 2024.
Find some of the cheapest American Airlines flights traveling from St. Louis to Belfast. It's recommended that users confirm their flight details before booking.
Fri 10/42:38 pmSTL - BHD
2 stops18h 47mAmerican Airlines
Fri 10/116:35 amBHD - STL
2 stops17h 46mAmerican Airlines
Deal found 4/29$826
Wed 5/154:20 pmSTL - BHD
2 stops17h 15mAmerican Airlines
Wed 7/316:50 amBHD - STL
2 stops15h 22mAmerican Airlines
Deal found 4/28$1,203

Cheap British Airways flights from St. Louis to Belfast

Explore cheap flight options specifically provided by British Airways for the route between St. Louis and Belfast. 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 2,948,547 searches. Data last updated April 29, 2024.
Have a look at some of the cheapest available British Airways flights departing from St. Louis and landing in Belfast. Make sure to examine the flight information before completing your reservation.
Fri 7/191:07 pmSTL - BHD
3 stops38h 23mBritish Airways
Wed 7/243:15 pmBHD - STL
3 stops56h 04mBritish Airways
Deal found 4/29$3,858
Fri 10/46:21 pmSTL - BHD
2 stops13h 19mBritish Airways
Fri 10/1110:10 amBHD - STL
2 stops16h 01mBritish Airways
Deal found 4/29$4,565
Fri 7/196:09 pmSTL - BHD
2 stops15h 16mBritish Airways
Wed 7/243:15 pmBHD - STL
3 stops56h 04mBritish Airways
Deal found 4/29$4,717
Fri 7/196:09 pmSTL - BHD
2 stops15h 16mBritish Airways
Wed 7/2411:50 amBHD - STL
2 stops16h 04mBritish Airways
Deal found 4/29$5,915

Cheap St. Louis to Belfast flights in April & May 2024

Find cheap flight options from St. Louis to Belfast specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,948,547 searches. Prices were last updated on April 29, 2024.
Check out some of the best flight deals from St. Louis to Belfast in 2024. More deals are always being added, so be sure to check back regularly.
Wed 5/154:20 pmSTL - BHD
2 stops17h 15mAmerican Airlines
Wed 7/316:50 amBHD - STL
2 stops15h 22mAmerican Airlines
Deal found 4/28$1,203
Wed 5/159:50 amSTL - BHD
2 stops20h 20mMultiple Airlines
Wed 7/316:35 amBHD - STL
3 stops21h 24mMultiple Airlines
Deal found 4/28$2,368
Wed 5/153:25 pmSTL - BHD
1 stop17h 25mMultiple Airlines
Wed 7/3111:50 amBHD - STL
2 stops15h 47mMultiple Airlines
Deal found 4/28$4,035

St. Louis to Belfast 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Belfast in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,948,547 searches. Data last updated April 29, 2024.
Check out some of the best flight deals from St. Louis to Belfast in 2024. More deals are always being added, so be sure to check back regularly.
Mon 10/1411:51 amSTL - BHD
2 stops22h 59mDelta
Mon 10/215:20 pmBHD - STL
2 stops29h 31mDelta
Deal found 4/28$751
Fri 10/42:38 pmSTL - BHD
2 stops18h 47mAmerican Airlines
Fri 10/116:35 amBHD - STL
2 stops17h 46mAmerican Airlines
Deal found 4/29$826
Wed 5/154:20 pmSTL - BHD
2 stops17h 15mAmerican Airlines
Wed 7/316:50 amBHD - STL
2 stops15h 22mAmerican Airlines
Deal found 4/28$1,203
Mon 10/144:05 pmSTL - BHD
2 stops17h 30mMultiple Airlines
Mon 10/213:35 pmBHD - STL
2 stops34h 21mMultiple Airlines
Deal found 4/28$1,762
Wed 5/159:50 amSTL - BHD
2 stops20h 20mMultiple Airlines
Wed 7/316:35 amBHD - STL
3 stops21h 24mMultiple Airlines
Deal found 4/28$2,368
Fri 7/191:07 pmSTL - BHD
3 stops38h 23mBritish Airways
Wed 7/243:15 pmBHD - STL
3 stops56h 04mBritish Airways
Deal found 4/29$3,858
Wed 5/153:25 pmSTL - BHD
1 stop17h 25mMultiple Airlines
Wed 7/3111:50 amBHD - STL
2 stops15h 47mMultiple Airlines
Deal found 4/28$4,035
Fri 10/46:21 pmSTL - BHD
2 stops13h 19mBritish Airways
Fri 10/1110:10 amBHD - STL
2 stops16h 01mBritish Airways
Deal found 4/29$4,565
Fri 7/196:09 pmSTL - BHD
2 stops15h 16mBritish Airways
Wed 7/243:15 pmBHD - STL
3 stops56h 04mBritish Airways
Deal found 4/29$4,717

Find flights from St. Louis to Belfast within your budget

Customize your flight search to find flights from St. Louis to Belfast 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 2,948,547 searches. Data last updated April 29, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$751 - $5,535

Route

Depart

Return

Price

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Mon 10/14

2 stops22h 59m

Belfast City

Mon 10/21

2 stops29h 31m

$751

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Fri 10/4

2 stops18h 47m

Belfast City

Fri 10/11

2 stops17h 46m

$826

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Wed 5/15

2 stops17h 15m

Belfast City

Wed 7/31

2 stops15h 22m

$1,203

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Mon 10/14

2 stops17h 30m

Belfast City

Mon 10/21

2 stops34h 21m

$1,762

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Wed 5/15

2 stops20h 20m

Belfast City

Wed 7/31

3 stops21h 24m

$2,368

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Fri 7/19

3 stops38h 23m

Belfast City

Wed 7/24

3 stops56h 04m

$3,858

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Wed 5/15

1 stop17h 25m

Belfast City

Wed 7/31

2 stops15h 47m

$4,035

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Fri 10/4

2 stops13h 19m

Belfast City

Fri 10/11

2 stops16h 01m

$4,565

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Wed 8/21

2 stops39h 30m

Belfast City

Sun 8/25

2 stops41h 37m

$5,535

Flights are sorted by cheapest first

Deals found on 4/28

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Belfast. Price data was last updated on April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Belfast flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Belfast by month

Plan your trip from St. Louis to Belfast by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Belfast is currently $0 while a round-trip flight costs $2,767. Price data was last updated on April 21, 2024.

Currently, February is the cheapest month in which you can book a flight from St. Louis to Belfast (average of $641). Flying from St. Louis to Belfast in June is currently the most expensive (average of $1,185). 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

$674

February

$641

March

$690

April

$699

May

$788

June

$1,185

July

$963

August

$867

September

$759

October

$684

November

$658

December

$728

Temperature and rainfall in Belfast by month

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

BFS

Temperature

41 - 60.8 °F

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. 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 Belfast. Reviews last updated April 29, 2024.
Read reviews from past customers who have flown American Airlines and British Airways from St. Louis to Belfast. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,913 reviews
Check prices

Food

7.4

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Delta
8.1
Very good
10,913 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Food

7.4

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

American Airlines
7.3
Good
14,834 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Food

7.4

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Lufthansa
7.0
Good
7,742 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Food

7.4

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

British Airways
6.8
Okay
6,891 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Food

7.4

Overall

8.1

Entertainment

8.0

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Belfast. 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 Belfast?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to Belfast from St. Louis. Booking flights from Lambert-St Louis (STL) to Belfast should be relatively easy as there are 0 daily outbound flights to Belfast from 1 airline.

  • Can I find flights from St. Louis to Belfast for under $800 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Belfast for under $800. The cheapest flight booked recently is on Delta for just $751, but on average you can expect to pay $4,111.

  • What are the cheapest airlines flying from St. Louis to Belfast round-trip?

    Our cheapest airline available from St. Louis to Belfast is Delta. Our recent data shows that you can find tickets from as low as $751 on this airline. Additional options worth looking into are American Airlines and British Airways, starting at $826 and $3,858 round-trip.

  • What does STL to BFS mean?

    Great question - STL to BFS just means Lambert-St Louis Airport to Belfast Intl Airport. Now you’ll know what these unique codes when you look for flights! This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Belfast City Airport (BHD), Glasgow Prestwick Airport (PIK), Londonderry Eglinton Airport (LDY), Isle of Islay Glenegedale Airport (ILY), Campbeltown Machrihanish Airport (CAL).

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

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

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

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

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

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

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

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

    Many airlines flying from St. Louis to Belfast 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 Belfast?

    Yes, you can often find last-minute deals on St. Louis to Belfast 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 Belfast flight deals updated?

    The St. Louis to Belfast flight deals you see on this page were last updated on 4/29.

See more FAQs

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

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St. Louis to Belfast City flights

Top airline flying from St. Louis to Belfast

Discover the top airline that operate flights from St. Louis to Belfast. 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 2,948,547 searches. Data last updated April 29, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$700Average$1,071FlexibilityNo cancel feeOn-time71%
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Search flights from St. Louis to Belfast by cabin class

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

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for St. Louis to Belfast flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Millions of users choose and trust Cheapflights to book the best flight deals from St. Louis to Belfast for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from St. Louis to Belfast with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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