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Cheap flights from St. Louis to Belfast from £617

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/9. 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
13 May — 20 May1
1 adult
Mon 13/5
Mon 20/5

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 8 May 2024.

Popular in

February

Cheapest in

August

Average price

£779

Round-trip from

£50
High demand for flights, 39% potential price rise
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Best time to find cheap flights, 40% potential price drop
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Average for round-trip flights in May 2024
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From Lambert-St Louis to Belfast
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What is the cheapest month to fly from St. Louis to Belfast?

August is one of the best times of the year to fly to Belfast from St. Louis. Prices for August average £894 per person but you can even find prices for as low as £537. The most expensive prices can be found in the month of February. Opting for a August flight can save you 63% on your journey compared to booking in February

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Belfast as you normally would.

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 881,145 searches. Data last updated 8 May 2024.
Fri 13/918:21STL - BHD
2 stops15h 04mAmerican Airlines
Fri 20/910:10BHD - STL
2 stops19h 10mAmerican Airlines
Deal found 7/5£617
Mon 15/718:09STL - BHD
2 stops17h 16mBritish Airways
Mon 22/719:30BHD - STL
2 stops27h 49mBritish Airways
Deal found 7/5£834
Mon 15/718:09STL - BHD
2 stops18h 31mBritish Airways
Mon 22/719:30BHD - STL
2 stops27h 49mBritish Airways
Deal found 8/5£857
Mon 15/718:09STL - BHD
2 stops17h 16mBritish Airways
Sun 21/719:40BHD - STL
2 stops24h 46mBritish Airways
Deal found 8/5£896
Mon 15/709:47STL - BHD
2 stops41h 18mBritish Airways
Sun 21/715:15BHD - STL
3 stops56h 04mBritish Airways
Deal found 8/5£1,041
Mon 15/711:05STL - BHD
2 stops21h 45mMultiple Airlines
Mon 22/706:55BHD - STL
3 stops35h 24mMultiple Airlines
Deal found 7/5£1,565
Mon 15/710:10STL - BHD
2 stops17h 05mMultiple Airlines
Mon 22/718:50BHD - STL
3 stops28h 31mMultiple Airlines
Deal found 8/5£1,862
Fri 13/911:10STL - BHD
3 stops16h 05mMultiple Airlines
Fri 20/915:15BHD - STL
2 stops30h 05mMultiple Airlines
Deal found 7/5£2,263
Fri 13/911:10STL - BHD
3 stops16h 05mMultiple Airlines
Fri 20/915:15BHD - STL
3 stops30h 05mMultiple Airlines
Deal found 7/5£3,299

Find flights from St. Louis to Belfast within your budget

Customise 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 881,145 searches. Data last updated 8 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£617 - £3,299

Route

Depart

Return

Price

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Fri 13/9

2 stops15h 04m

Belfast City

Fri 20/9

2 stops19h 10m

£617

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Mon 15/7

2 stops17h 16m

Belfast City

Mon 22/7

2 stops27h 49m

£834

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Mon 15/7

2 stops21h 45m

Belfast City

Mon 22/7

3 stops35h 24m

£1,565

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Fri 13/9

3 stops16h 05m

Belfast City

Fri 20/9

2 stops30h 05m

£2,263

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Fri 13/9

3 stops16h 05m

Belfast City

Fri 20/9

3 stops30h 05m

£3,299

Flights are sorted by cheapest first

Deals found on 7/5

No data available for this route at this time. Please check back soon.

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 return flight costs £1,716. Price data was last updated on 5 May 2024.

Currently, October is the cheapest month in which you can book a flight from St. Louis to Belfast (average of £62). Flying from St. Louis to Belfast in July is currently the most expensive (average of £82). 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

£50

February

£56

March

£55

April

£55

May

£56

June

£59

July

£65

August

£65

September

£57

October

£49

November

£55

December

£57

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

5 - 16 °C

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 8 May 2024.
American Airlines
7.3
Good
14,677 reviews
Check prices

Crew

8.0

Food

6.6

Comfort

7.2

Entertainment

7.1

Boarding

7.6

Overall

7.3

Reviews

1 / 10

Entertainment was ok, no delays either. The food was just ok, the trays were dirty and overall the plane seemed dated.

American Airlines
7.3
Good
14,677 reviews
American Airlines
7.3
Good
14,677 reviews
Check prices

Crew

8.0

Food

6.6

Comfort

7.2

Entertainment

7.1

Boarding

7.6

Overall

7.3

Reviews

1 / 10

Entertainment was ok, no delays either. The food was just ok, the trays were dirty and overall the plane seemed dated.

British Airways
6.8
Okay
6,868 reviews
American Airlines
7.3
Good
14,677 reviews
Check prices

Crew

8.0

Food

6.6

Comfort

7.2

Entertainment

7.1

Boarding

7.6

Overall

7.3

Reviews

1 / 10

Entertainment was ok, no delays either. The food was just ok, the trays were dirty and overall the plane seemed dated.

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?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Belfast. On average, Lambert-St Louis has 0 outbound flights to Belfast per day from 0 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 Belfast for under £700 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Belfast for under £700. The cheapest flight booked recently is on American Airlines for just £617, but on average you can expect to pay £1,716.

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

    Currently priced at £617, American Airlines will fly you from St. Louis to Belfast and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on British Airways for as low as £834. American Airlines is currently priced 30% below the average price you’ll pay for this route.

  • What does STL to BFS mean?

    This is defined as Lambert-St Louis Airport (STL) and Belfast Intl Airport (BFS). Codes like Belfast Intl Airport are often used to just call airports uniquely. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: 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 holiday 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 8/5.

See more FAQs

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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 travellers 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?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Belfast from St. Louis today with Cheapflights!

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from St. Louis to Belfast.

Can Cheapflights find flights from St. Louis to Belfast 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 Belfast, 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 Belfast become cheaper?

Of course! You can now track prices for flights from St. Louis to Belfast and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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