$413 Cheap Flights from St. Louis (STL) to Belfast (BHD)

View $413 flight on Wed, May 6, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Belfast (BHD-George Best Belfast City)

Cheap Flights from St. Louis to Belfast (STL-BHD)

Prices were available within the past 7 days and start at $413 for one-way flights and $680 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Tue, Nov 11 - Mon, Nov 17
STL
St. Louis
BHD
Belfast
$680 Roundtrip, found 12 hours ago
$680
Roundtrip
found 12 hours ago
Select British Airways flight, departing Tue, Nov 11 from St. Louis to Belfast, returning Mon, Nov 17, priced at $680 found 12 hours ago
American Airlines
Fri, Dec 5 - Wed, Dec 10
STL
St. Louis
BHD
Belfast
$685 Roundtrip, found 1 day ago
$685
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Dec 5 from St. Louis to Belfast, returning Wed, Dec 10, priced at $685 found 1 day ago
American Airlines
Fri, Dec 5 - Wed, Dec 10
STL
St. Louis
BHD
Belfast
$686 Roundtrip, found 1 day ago
$686
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Dec 5 from St. Louis to Belfast, returning Wed, Dec 10, priced at $686 found 1 day ago
American Airlines
Fri, Feb 6 - Sun, Feb 15
STL
St. Louis
BHD
Belfast
$686 Roundtrip, found 1 hour ago
$686
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Fri, Feb 6 from St. Louis to Belfast, returning Sun, Feb 15, priced at $686 found 1 hour ago
American Airlines
Fri, Feb 6 - Sun, Feb 15
STL
St. Louis
BHD
Belfast
$687 Roundtrip, found 1 hour ago
$687
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Fri, Feb 6 from St. Louis to Belfast, returning Sun, Feb 15, priced at $687 found 1 hour ago
British Airways
Fri, Feb 6 - Sun, Feb 15
STL
St. Louis
BHD
Belfast
$688 Roundtrip, found 1 hour ago
$688
Roundtrip
found 1 hour ago
Select British Airways flight, departing Fri, Feb 6 from St. Louis to Belfast, returning Sun, Feb 15, priced at $688 found 1 hour ago
British Airways
Fri, Feb 6 - Sun, Feb 15
STL
St. Louis
BHD
Belfast
$689 Roundtrip, found 1 hour ago
$689
Roundtrip
found 1 hour ago
Select British Airways flight, departing Fri, Feb 6 from St. Louis to Belfast, returning Sun, Feb 15, priced at $689 found 1 hour ago
Delta
Mon, Dec 1 - Mon, Dec 15
STL
St. Louis
BHD
Belfast
$701 Roundtrip, found 5 days ago
$701
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Dec 1 from St. Louis to Belfast, returning Mon, Dec 15, priced at $701 found 5 days ago
Virgin Atlantic
Fri, Dec 5 - Wed, Dec 10
STL
St. Louis
BHD
Belfast
$725 Roundtrip, found 1 day ago
$725
Roundtrip
found 1 day ago
Select Virgin Atlantic flight, departing Fri, Dec 5 from St. Louis to Belfast, returning Wed, Dec 10, priced at $725 found 1 day ago
Air France
Sat, Nov 29 - Mon, Dec 15
STL
St. Louis
BHD
Belfast
$727 Roundtrip, found 5 days ago
$727
Roundtrip
found 5 days ago
Select Air France flight, departing Sat, Nov 29 from St. Louis to Belfast, returning Mon, Dec 15, priced at $727 found 5 days ago

Alternative airports near Belfast

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to George Best Belfast City BHD. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $739
BHD
George Best Belfast City
CheapestClosest
Average driving time to city center6 min
Flights from $739

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to George Best Belfast City Airport (BHD) cost?
Get a cheap one-way flight from $413 or cheap return flight from $680 from Lambert-St. Louis Intl. Airport (STL) to George Best Belfast City Airport (BHD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to George Best Belfast City Airport (BHD)?
Planning your getaway for November may help you find better deals, as it's the cheapest month for flights between STL and BHD. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to George Best Belfast City Airport (BHD)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest STL to BHD flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to George Best Belfast City Airport (BHD)?
You'll need to catch a flight with a layover when traveling from Lambert-St. Louis Intl. Airport (STL) to George Best Belfast City Airport (BHD). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from STL to BHD?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on a number of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to George Best Belfast City Airport (BHD)?
Choose a flight from Lambert-St. Louis Intl. Airport (STL) to George Best Belfast City Airport (BHD) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to George Best Belfast City Airport (BHD) last-minute?
Holding off until just before your trip to book your flight from STL to BHD generally means paying more. Although you may find some last-minute offers, they're not always guaranteed. Be flexible with your travel plans for a better chance of snagging a bargain.
Is it cheaper to book a STL to BHD flight and hotel package?
Securing a STL to BHD flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our wide range of stays and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to George Best Belfast City Airport (BHD)?
Typically, it's possible to reschedule or cancel your STL to BHD flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
George Best Belfast City
Airlines serving
American Airlines, British Airways, Delta, KLM, Virgin Atlantic
Roundtrip price
$680
Distance
3895 mi

Book with confidence

St. Louis to Belfast Flights

The cheapest times to fly from St. Louis to Belfast

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Belfast are during the month of November. You can find some of the cheapest flights from St. Louis to Belfast with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Belfast

Sunday is one of the best days to book for cheap flights from St. Louis to Belfast: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Belfast

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Belfast in 2025. You can also book with separate airlines for your outbound and return journeys, from $413 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Belfast flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Belfast airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Belfast Flights

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*Available to One Key members.