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Cheap flights from St. Louis (STL) to Belfast from $773

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 9/1. 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 12 — May 191
From?
To?
Sun 5/12
Sun 5/19
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 May 7, 2024.

Popular in

February

Cheapest in

August

Average price

$977

Round-trip from

$640
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 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.

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

Due to multiple factors, expect to potentially pay more when booking in February. For low rates, August can be a great choice for travel to Belfast. Flights to Belfast from St. Louis in August are about $1,121 on average during August, but can be found for as low as $673.

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.

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 2,749,864 searches. Data last updated May 7, 2024.
Sun 9/16:18 pmSTL - BHD
2 stops14h 17mBritish Airways
Mon 9/97:30 pmBHD - STL
2 stops30h 41mBritish Airways
Deal found 5/6$773
Mon 9/26:00 pmSTL - BHD
2 stops16h 50mKLM
Mon 9/95:20 pmBHD - STL
2 stops36h 15mKLM
Deal found 5/6$774
Sun 9/16:18 pmSTL - BHD
2 stops17h 17mAmerican Airlines
Sun 9/86:50 amBHD - STL
2 stops20h 17mAmerican Airlines
Deal found 5/6$794
Mon 9/24:22 pmSTL - BHD
2 stops14h 28mBritish Airways
Sun 9/811:20 amBHD - STL
2 stops14h 38mBritish Airways
Deal found 5/6$795
Sun 9/16:18 pmSTL - BHD
2 stops14h 17mBritish Airways
Sat 9/79:40 amBHD - STL
2 stops16h 18mBritish Airways
Deal found 5/6$855
Sat 8/3110:10 amSTL - BHD
2 stops24h 40mDelta
Sat 9/75:20 pmBHD - STL
2 stops25h 48mDelta
Deal found 5/6$1,026
Mon 7/156:09 pmSTL - BHD
2 stops17h 16mBritish Airways
Mon 7/227:30 pmBHD - STL
2 stops27h 49mBritish Airways
Deal found 5/6$1,045
Mon 7/156:09 pmSTL - BHD
2 stops17h 16mBritish Airways
Mon 7/227:30 pmBHD - STL
2 stops27h 49mBritish Airways
Deal found 5/7$1,046
Sat 8/314:23 pmSTL - BHD
2 stops13h 57mBritish Airways
Sun 9/811:20 amBHD - STL
2 stops14h 38mBritish Airways
Deal found 5/6$1,094

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 2,749,864 searches. Data last updated May 7, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$774 - $4,136

Route

Depart

Return

Price

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Fri 9/13

2 stops15h 04m

Belfast City

Fri 9/20

2 stops19h 10m

$774

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Mon 7/15

2 stops17h 16m

Belfast City

Mon 7/22

2 stops27h 49m

$1,046

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Mon 7/15

2 stops21h 45m

Belfast City

Mon 7/22

3 stops35h 24m

$1,962

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Fri 9/13

3 stops16h 05m

Belfast City

Fri 9/20

2 stops30h 05m

$2,837

Lambert-St LouisBelfast City

STL - BHD

STLBHD

Lambert-St Louis

Fri 9/13

3 stops16h 05m

Belfast City

Fri 9/20

3 stops30h 05m

$4,136

Flights are sorted by cheapest first

Deals found on 5/7

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 28, 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.
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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 $2,151. Price data was last updated on May 5, 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 $1,181). 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

$685

February

$641

March

$690

April

$685

May

$781

June

$1,181

July

$991

August

$867

September

$769

October

$684

November

$658

December

$733

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 May 7, 2024.
American Airlines
7.3
Good
14,686 reviews
Check prices

Crew

8.0

Entertainment

7.1

Overall

7.3

Food

6.6

Boarding

7.6

Comfort

7.2

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
14,686 reviews
American Airlines
7.3
Good
14,686 reviews
Check prices

Crew

8.0

Entertainment

7.1

Overall

7.3

Food

6.6

Boarding

7.6

Comfort

7.2

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
6,870 reviews
American Airlines
7.3
Good
14,686 reviews
Check prices

Crew

8.0

Entertainment

7.1

Overall

7.3

Food

6.6

Boarding

7.6

Comfort

7.2

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?

    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 American Airlines for just $774, but on average you can expect to pay $2,151.

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

    Our cheapest airline available from St. Louis to Belfast is American Airlines. Our recent data shows that you can find tickets from as low as $774 on this airline. An additional option worth looking into is British Airways, starting at $1,046. Users have found that American Airlines is 30% cheaper than the other options available to this destination.

  • 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 5/7.

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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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 2,749,864 searches. Data last updated May 7, 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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