£429 Find Cheap Flights from St. Louis to Belfast

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Belfast departing on 29/9. 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.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Belfast

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Belfast, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Belfast, as well as popular online travel agencies
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Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from St. Louis to Belfast that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from St. Louis to Belfast

Mon, 29 Sep - Tue, 7 Oct
 Logo
13:26 - 23:10STL-BFS
27h 44m2 stops
 Logo
06:45 - 22:04BFS-STL
21h 19m2 stops
Mon, 29 Sep - Tue, 7 Oct
American Airlines Logo
19:59 - 17:30STL-BHD
15h 31m2 stops
American Airlines Logo
09:35 - 21:29BHD-STL
17h 54m2 stops
£520American Airlines
Find Deal
Sun, 1 Mar - Thu, 5 Mar
Delta Logo
10:45 - 21:00STL-BHD
28h 15m2 stops
Delta Logo
06:30 - 16:50BHD-STL
16h 20m2 stops
£589Delta
Find Deal
Wed, 29 Oct - Wed, 5 Nov
 Logo
16:50 - 16:10STL-BFS
18h 20m2 stops
 Logo
20:50 - 13:55BFS-STL
47h 05m3 stops
£1,381
Find Deal
Mon, 29 Sep - Tue, 7 Oct
 Logo
13:30 - 16:25STL-BHD
20h 55m3 stops
 Logo
17:55 - 19:38BHD-STL
31h 43m3 stops
£1,495
Find Deal
Fri, 26 Sep - Fri, 3 Oct
 Logo
13:03 - 18:15STL-BHD
23h 12m2 stops
 Logo
06:35 - 21:06BHD-STL
20h 31m2 stops
£2,121
Find Deal
Fri, 26 Dec - Fri, 9 Jan
British Airways Logo
13:59 - 10:30STL-BHD
14h 31m2 stops
British Airways Logo
06:45 - 20:23BHD-STL
19h 38m2 stops
£2,638British Airways
Find Deal
Sat, 27 Dec - Fri, 9 Jan
British Airways Logo
18:35 - 16:45STL-BHD
16h 10m2 stops
British Airways Logo
11:30 - 23:32BHD-STL
18h 02m2 stops
£2,690British Airways
Find Deal
Thu, 25 Dec - Fri, 9 Jan
 Logo
14:00 - 10:20STL-BHD
14h 20m2 stops
 Logo
06:45 - 20:23BHD-STL
19h 38m2 stops
£2,698
Find Deal
Sun, 28 Dec - Fri, 9 Jan
American Airlines Logo
10:01 - 10:20STL-BHD
18h 19m2 stops
American Airlines Logo
06:45 - 19:07BHD-STL
18h 22m2 stops
£2,726American Airlines
Find Deal

Everything you should know

Cheapest return fare
£429
Multi-carrier
Mon 29/9Tue 7/10
STL - BFS • 2 stops
Cheapest one-way flight
Multiple Airlines
Mon 15/9
STL - BF1 • multi-stop
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Belfast!
Booking Insights

KAYAK's insights & trends for St. Louis to Belfast flights

Get data-powered insights and trends into flights from St. Louis to Belfast to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from St. Louis to Belfast?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest return tickets from St. Louis to Belfast were found on American Airlines (£520) and Delta (£589).

When to book flights from St. Louis to Belfast

Are your dates flexible? Find out the best times to travel from St. Louis to Belfast based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Belfast

  • What is the cheapest flight from St. Louis to Belfast?

    In the last 3 days, the lowest price for a flight from St. Louis to Belfast was £583 for a return ticket.

  • Which aircraft models fly most regularly from St. Louis to Belfast?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Belfast?

    oneworld, and SkyTeam are the airline alliances operating flights between St. Louis and Belfast, with oneworld being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from St. Louis to Belfast?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Belfast.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Belfast?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Belfast?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Belfast with an airline and back to St. Louis with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Belfast?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Belfast from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from St. Louis to Belfast

Information on your arrival and departure airports

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