HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Belfast Intl

$1,420+ Cheap flights from Missouri to Belfast Intl (BFS)

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 11/29. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BFS
nov. 16 — nov. 231
dom. 11/16
dom. 11/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Missouri to Belfast Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Missouri to Belfast Intl

Keep the following information in mind while searching for Missouri to Belfast Intl flight deals. Data was last updated octubre 17, 2025.

Round-trip from

$1,420
(Mytrip)
From Missouri to Belfast Intl
Search Deals

Find flight deals from Missouri to Belfast Intl

Cheapest flights from Missouri to Belfast Intl
Explore the most affordable flight options available from Missouri to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 17, 2025.

This Mytrip deal was found by Cheapflights users on 10/15. 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.
sáb. 11/294:05 pmSTL - BFS
2 stops20h 25mMultiple Airlines
sáb. 12/67:30 pmBFS - STL
3 stops34h 08mMultiple Airlines
Deal found 10/15$1,420

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Belfast 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 2,558,603 searches. Data last updated octubre 17, 2025.
Use the filters below to find and compare flights from Missouri to Belfast Intl Airport that are best for you.

Fly from

Missouri

Fly to

Belfast Intl

Route

Depart

Return

Price

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

sáb. 11/29

4:05 pm-6:30 pm

2 stops20h 25m

Belfast Intl

sáb. 12/6

7:30 pm-11:38 pm

3 stops34h 08m

$1,420

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Best time to book a flight from Missouri to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl 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 Intl Airport

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

Find hourly flight availability from Missouri to Belfast Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 17, 2025.

When flying from Missouri to Belfast 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 24% versus a flight at noon.

Related info for your journey

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Missouri to Belfast 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.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Missouri to Belfast Intl

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Belfast Intl flights
John F Kennedy Intl to Belfast City flights
Dulles Intl to Belfast Intl flights
Boston to Belfast Intl flights
Seattle to Belfast Intl flights
Seattle to Belfast City flights
Boston to Belfast City flights
Dulles Intl to Belfast City flights
Los Angeles to Belfast Intl flights
Newark to Belfast Intl flights
Los Angeles to Belfast City flights
Hobby to Belfast City flights
Newark to Belfast City flights
Baltimore to Belfast Intl flights
Charlotte to Belfast Intl flights
O'Hare Intl to Belfast Intl flights
O'Hare Intl to Belfast City flights
Philadelphia to Belfast Intl flights
Philadelphia to Belfast City flights
Dallas/Fort Worth to Belfast City flights
Hobby to Belfast Intl flights
LaGuardia to Belfast Intl flights
Orlando to Belfast Intl flights
Reagan-National to Belfast Intl flights
Dallas/Fort Worth to Belfast Intl flights
Cincinnati to Belfast City flights
Charlotte to Belfast City flights
George Bush Intcntl to Belfast City flights
Orlando to Belfast City flights
Minneapolis to Belfast Intl flights
Minneapolis to Belfast City flights
Pittsburgh to Belfast City flights
Atlanta to Belfast Intl flights
Baltimore to Belfast City flights
Reagan-National to Belfast City flights
Denver to Belfast City flights
Indianapolis to Belfast City flights
LaGuardia to Belfast City flights
San Francisco to Belfast Intl flights
St. Louis to Belfast Intl flights
Baton Rouge to Belfast City flights
Detroit to Belfast Intl flights
Kansas City to Belfast City flights
Midway to Belfast City flights
New Orleans to Belfast City flights
Rochester to Belfast City flights
St. Louis to Belfast City flights
Austin to Belfast Intl flights
Nashville to Belfast Intl flights
Love Field to Belfast City flights

Top airline flying from Missouri to Belfast Intl

Discover the top airline that operate flights from Missouri to Belfast 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 2,558,603 searches. Data last updated octubre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$674Average$832FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.