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$424+ Cheap flights from Missouri to Belfast

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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BHD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Missouri to Belfast

Keep the following information in mind while searching for Missouri to Belfast flight deals. Data was last updated September 15, 2025.

Round-trip from

$583
(Trip.com)

One-way from

$424
(American Airlines)
From Missouri to Belfast
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One-way flight from Missouri to Belfast
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Find flight deals from Missouri to Belfast

Cheapest flights from Missouri to Belfast
Explore the most affordable flight options available from Missouri to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Trip.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/291:26 pmSTL - BFS
2 stops27h 44mMultiple Airlines
Tue 10/76:45 amBFS - STL
2 stops21h 19mMultiple Airlines
Deal found 9/15$583
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/297:59 pmSTL - BHD
2 stops15h 31mAmerican Airlines
Tue 10/79:35 amBHD - STL
2 stops17h 54mAmerican Airlines
Deal found 9/15$706
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:42 pmMCI - BHD
2 stops20h 33mDelta
Tue 10/76:30 amBHD - MCI
2 stops17h 34mDelta
Deal found 9/14$851
This Mytrip deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/284:05 pmSTL - BFS
3 stops27h 35mMultiple Airlines
Tue 11/49:35 amBFS - STL
3 stops34h 20mMultiple Airlines
Deal found 9/12$1,739
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/294:50 pmSTL - BFS
2 stops18h 20mMultiple Airlines
Wed 11/58:50 pmBFS - STL
3 stops47h 05mMultiple Airlines
Deal found 9/14$1,877
This Mytrip deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/291:30 pmSTL - BHD
3 stops20h 55mMultiple Airlines
Tue 10/75:55 pmBHD - STL
3 stops31h 43mMultiple Airlines
Deal found 9/15$2,032
This Expedia deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/261:03 pmSTL - BHD
2 stops23h 12mMultiple Airlines
Fri 10/36:35 amBHD - STL
2 stops20h 31mMultiple Airlines
Deal found 9/12$2,883
This Arangrant deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/261:59 pmSTL - BHD
2 stops14h 31mBritish Airways
Fri 1/96:45 amBHD - STL
2 stops19h 38mBritish Airways
Deal found 9/13$3,585
This Arangrant deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:35 pmSTL - BHD
2 stops16h 10mBritish Airways
Fri 1/911:30 amBHD - STL
2 stops18h 02mBritish Airways
Deal found 9/13$3,655
This Arangrant deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:00 pmSTL - BHD
2 stops14h 20mMultiple Airlines
Fri 1/96:45 amBHD - STL
2 stops19h 38mMultiple Airlines
Deal found 9/13$3,666
This American Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2810:01 amSTL - BHD
2 stops18h 19mAmerican Airlines
Fri 1/96:45 amBHD - STL
2 stops18h 22mAmerican Airlines
Deal found 9/13$3,705
This American Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:11 pmSTL - BHD
2 stops35h 09mAmerican Airlines
Fri 1/911:30 amBHD - STL
2 stops18h 02mAmerican Airlines
Deal found 9/13$3,711

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri 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 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Missouri to Belfast that are best for you.

Fly from

Missouri

Fly to

Belfast

Route

Depart

Return

Price

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

Mon 9/29

1:26 pm-11:10 pm

2 stops27h 44m

Belfast Intl

Tue 10/7

6:45 am-10:04 pm

2 stops21h 19m

$583

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 9/29

7:59 pm-5:30 pm

2 stops15h 31m

Belfast City

Tue 10/7

9:35 am-9:29 pm

2 stops17h 54m

$706

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sun 3/1

11:51 am-4:50 pm

2 stops22h 59m

Belfast City

Thu 3/5

6:30 am-4:50 pm

2 stops16h 20m

$801

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sun 3/1

10:45 am-9:00 pm

2 stops28h 15m

Belfast City

Thu 3/5

6:30 am-4:50 pm

2 stops16h 20m

$801

Kansas CityBelfast

MCI - BHD

MCIBHD

Kansas City

Fri 10/3

6:42 pm-9:15 pm

2 stops20h 33m

Belfast City

Tue 10/7

5:25 pm-3:34 pm

2 stops28h 09m

$851

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

Tue 10/28

4:05 pm-12:40 am

3 stops27h 35m

Belfast Intl

Tue 11/4

9:35 am-1:55 pm

3 stops34h 20m

$1,739

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

Wed 10/29

4:50 pm-4:10 pm

2 stops18h 20m

Belfast Intl

Wed 11/5

8:50 pm-1:55 pm

3 stops47h 05m

$1,877

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 9/29

1:30 pm-4:25 pm

3 stops20h 55m

Belfast City

Tue 10/7

5:55 pm-7:38 pm

3 stops31h 43m

$2,032

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 9/26

1:03 pm-6:15 pm

2 stops23h 12m

Belfast City

Fri 10/3

6:35 am-9:06 pm

2 stops20h 31m

$2,883

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 12/26

1:59 pm-10:30 am

2 stops14h 31m

Belfast City

Fri 1/9

6:45 am-8:23 pm

2 stops19h 38m

$3,585

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 30 results
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Best time to book a flight from Missouri to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Missouri with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Belfast

What is the cheapest time of day to fly from MO to BFS?

Find hourly flight availability from Missouri to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

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

Related info for your journey

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

  • How long is the flight from Missouri to Belfast?

    A quick flight from Missouri to Belfast can take about 15h 31m. American Airlines provides one of the quickest options available for as low as $706. Missouri and Belfast are separated by a distance of 3893 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Missouri to Belfast?

    When deciding which route to take from Missouri to Belfast consider Kansas City - Belfast City, Lambert-St Louis - Belfast Intl or Lambert-St Louis - Belfast City as they are the most popular.

  • Can I find deals for flights from Missouri to Belfast that include hotel bookings?

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

  • How can I find direct flights from Missouri to Belfast?

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

  • Can I find deals for business class flights from Missouri to Belfast?

    Yes. Cheapflights offers flight deals from Missouri 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.

  • What is the cheapest month to book a flight from Missouri to Belfast?

    Currently, February is the cheapest month in which you can book a flight from Missouri to Belfast (average of $657). Flying from Missouri to Belfast in June is currently the most expensive (average of $1,189). 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.

See more FAQs

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Alternative routes for Missouri 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 Missouri to Belfast

Discover the top airline that operate flights from Missouri 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 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$674Average$832FlexibilityNo cancel feeOn-time71%

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