HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Belfast City

$714+ Cheap flights from St. Louis (STL) to Belfast City (BHD)

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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BHD
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Belfast City 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 St. Louis to Belfast City

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Belfast City (BHD). 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 August 20, 2025.

Round-trip from

$714
(American Airlines)
From Lambert-St Louis to Belfast City
Search Deals

Find flight deals from St. Louis to Belfast City

Cheapest flights from St. Louis to Belfast City
Explore the most affordable flight options available from St. Louis to Belfast City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This American Airlines deal was found by Cheapflights users on 8/19. 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 9/223:56 pmSTL - BHD
2 stops17h 44mAmerican Airlines
Fri 9/266:35 amBHD - STL
2 stops18h 06mAmerican Airlines
Deal found 8/19$714
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Tue 8/261:15 pmSTL - BHD
2 stops17h 45mAmerican Airlines
Tue 9/26:35 amBHD - STL
2 stops18h 46mAmerican Airlines
Deal found 8/19$919

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Belfast City 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 August 20, 2025.
Use the filters below to find and compare flights from St. Louis to Belfast City Airport that are best for you.

Fly from

St. Louis

Fly to

Belfast City

Route

Depart

Return

Price

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 9/22

3:56 pm-3:40 pm

2 stops17h 44m

Belfast City

Fri 9/26

6:35 am-6:41 pm

2 stops18h 06m

$714

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Best time to book a flight from St. Louis to Belfast City

Have a flexible travel schedule? Discover the best time to fly to Belfast City from St. Louis 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.

Related info for your journey

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

    For a flight from St. Louis to Belfast City, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 outbound flights to Belfast City per day. 0 airlines have flights to Belfast City from Lambert-St Louis on a regular basis.

  • How long is the flight from St. Louis to Belfast City Airport?

    There are many flights that can get you from St. Louis to Belfast City Airport in 17h 44m. Fly via American Airlines to get the fastest option. The distance between St. Louis and Belfast City Airport is about 3893 mi.

  • Can I find deals for flights from St. Louis to Belfast City that include hotel bookings?

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

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

    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 City.

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

    Yes. Cheapflights offers flight deals from St. Louis to Belfast City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Belfast City Airport?

Book flights to Belfast City Airport if you plan to visit one of these locations
Newcastle

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 St. Louis to Belfast City

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Belfast City flights
St. Louis to Belfast Intl flights

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.