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Cheap flights from St. Louis to Belfast from £683

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
21:00 - 17:30STL  Lambert-St Louis-BHD Belfast City
14h 30m1 stop London Heathrow
British Airways Logo
09:35 - 19:30BHD  Belfast City-STL Lambert-St Louis
15h 55m1 stop London Heathrow
£683British Airways
Mon, 19 Apr - Fri, 23 Apr
British Airways Logo
21:00 - 17:30STL  Lambert-St Louis-BHD Belfast City
14h 30m1 stop London Heathrow
British Airways Logo
09:35 - 19:30BHD  Belfast City-STL Lambert-St Louis
15h 55m1 stop London Heathrow
£683British Airways
Mon, 19 Apr - Fri, 23 Apr
American Airlines Logo
14:00 - 10:50STL  Lambert-St Louis-BHD Belfast City
14h 50m2 stops Charlotte Douglas London Heathrow
American Airlines Logo
06:30 - 19:27BHD  Belfast City-STL Lambert-St Louis
18h 57m2 stops London Heathrow Chicago O'Hare Intl
£782American Airlines
Tue, 15 Dec - Thu, 14 Jan
British Airways Logo
17:21 - 17:30STL  Lambert-St Louis-BHD Belfast City
18h 09m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
06:30 - 19:30BHD  Belfast City-STL Lambert-St Louis
19h 00m1 stop London Heathrow
£867British Airways
Mon, 12 Apr - Fri, 16 Apr
British Airways Logo
17:21 - 17:30STL  Lambert-St Louis-BHD Belfast City
18h 09m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
06:30 - 19:30BHD  Belfast City-STL Lambert-St Louis
19h 00m1 stop London Heathrow
£868British Airways
Mon, 12 Apr - Fri, 16 Apr
British Airways Logo
12:27 - 15:30STL  Lambert-St Louis-BHD Belfast City
21h 03m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
11:00 - 19:30BHD  Belfast City-STL Lambert-St Louis
14h 30m1 stop London Heathrow
£869British Airways
Mon, 12 Apr - Fri, 16 Apr
British Airways Logo
12:27 - 12:55STL  Lambert-St Louis-BHD Belfast City
18h 28m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
06:30 - 19:33BHD  Belfast City-STL Lambert-St Louis
19h 03m2 stops London Heathrow Chicago O'Hare Intl
£875British Airways
Mon, 12 Apr - Fri, 16 Apr
British Airways Logo
16:30 - 15:30STL  Lambert-St Louis-BHD Belfast City
17h 00m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
06:30 - 16:00BHD  Belfast City-STL Lambert-St Louis
15h 30m2 stops London Heathrow Chicago O'Hare Intl
£875British Airways
Mon, 12 Apr - Fri, 16 Apr
British Airways Logo
12:27 - 12:55STL  Lambert-St Louis-BHD Belfast City
18h 28m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
06:30 - 19:33BHD  Belfast City-STL Lambert-St Louis
19h 03m2 stops London Heathrow Chicago O'Hare Intl
£876British Airways
Mon, 12 Apr - Fri, 16 Apr
Multiple Airlines Logo
07:27 - 10:05STL  Lambert-St Louis-BHD Belfast City
44h 38m3 stops Chicago O'Hare Intl Hong Kong Intl London Heathrow
Multiple Airlines Logo
11:05 - 20:01BHD  Belfast City-STL Lambert-St Louis
38h 56m3 stops London Heathrow Hong Kong Intl Dallas/Fort Worth
£10,416Multiple Airlines
Tue, 15 Dec - Thu, 14 Jan

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British Airways flights from St. Louis to Belfast

Our best British Airways deals on St. Louis to Belfast flight tickets
British Airways
19 Apr
STL21:00Lambert-St Louis
14h 30m
1 stop
BHD17:30Belfast City
23 Apr
BHD09:35Belfast City
15h 55m
1 stop
STL19:30Lambert-St Louis
£683
British Airways
19 Apr
STL21:00Lambert-St Louis
14h 30m
1 stop
BHD17:30Belfast City
23 Apr
BHD09:35Belfast City
15h 55m
1 stop
STL19:30Lambert-St Louis
£683
British Airways
12 Apr
STL17:21Lambert-St Louis
18h 09m
2 stops
BHD17:30Belfast City
16 Apr
BHD06:30Belfast City
19h 00m
1 stop
STL19:30Lambert-St Louis
£867

American Airlines flights from St. Louis to Belfast

Our best American Airlines deals on St. Louis to Belfast flight tickets
American Airlines
15 Dec
STL14:00Lambert-St Louis
14h 50m
2 stops
BHD10:50Belfast City
14 Jan
BHD06:30Belfast City
18h 57m
2 stops
STL19:27Lambert-St Louis
£779
American Airlines
15 Dec
STL14:00Lambert-St Louis
14h 50m
2 stops
BHD10:50Belfast City
14 Jan
BHD06:30Belfast City
18h 57m
2 stops
STL19:27Lambert-St Louis
£782

momondo Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Belfast that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

St. LouisBelfast

STL Lambert-St Louis - BHD Belfast City

STLBHD

Lambert-St Louis

Mon 19/4

21:00-17:30

1 stop14h 30m

Belfast City

Fri 23/4

09:35-19:30

1 stop15h 55m

£683

St. LouisBelfast

STL Lambert-St Louis - BHD Belfast City

STLBHD

Lambert-St Louis

Mon 19/4

21:00-17:30

1 stop14h 30m

Belfast City

Fri 23/4

09:35-19:30

1 stop15h 55m

£683

St. LouisBelfast

STL Lambert-St Louis - BHD Belfast City

STLBHD

Lambert-St Louis

Tue 15/12

14:00-10:50

2 stops14h 50m

Belfast City

Thu 14/1

06:30-19:27

2 stops18h 57m

£782

St. LouisBelfast

STL Lambert-St Louis - BHD Belfast City

STLBHD

Lambert-St Louis

Mon 12/4

17:21-17:30

2 stops18h 09m

Belfast City

Fri 16/4

06:30-19:30

1 stop19h 00m

£867

St. LouisBelfast

STL Lambert-St Louis - BHD Belfast City

STLBHD

Lambert-St Louis

Mon 12/4

17:21-17:30

2 stops18h 09m

Belfast City

Fri 16/4

06:30-19:30

1 stop19h 00m

£868

St. LouisBelfast

STL Lambert-St Louis - BHD Belfast City

STLBHD

Lambert-St Louis

Mon 12/4

12:27-15:30

2 stops21h 03m

Belfast City

Fri 16/4

11:00-19:30

1 stop14h 30m

£869

St. LouisBelfast

STL Lambert-St Louis - BHD Belfast City

STLBHD

Lambert-St Louis

Mon 12/4

12:27-12:55

2 stops18h 28m

Belfast City

Fri 16/4

06:30-19:33

2 stops19h 03m

£875

St. LouisBelfast

STL Lambert-St Louis - BHD Belfast City

STLBHD

Lambert-St Louis

Mon 12/4

16:30-15:30

2 stops17h 00m

Belfast City

Fri 16/4

06:30-16:00

2 stops15h 30m

£875

St. LouisBelfast

STL Lambert-St Louis - BHD Belfast City

STLBHD

Lambert-St Louis

Mon 12/4

12:27-12:55

2 stops18h 28m

Belfast City

Fri 16/4

06:30-19:33

2 stops19h 03m

£876

St. LouisBelfast

STL Lambert-St Louis - BHD Belfast City

STLBHD

Lambert-St Louis

Tue 15/12

07:27-10:05

3 stops44h 38m

Belfast City

Thu 14/1

11:05-20:01

3 stops38h 56m

£10,416

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

Cheap St. Louis to Belfast flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Belfast

Best price found

£683

Fastest flight time

14h 30m

Direct flights

None
The best flight deal from St. Louis to Belfast found on momondo in the last 72 hours is £683
The fastest flight from St. Louis to Belfast takes 14h 30m
There are no direct flights from St. Louis to Belfast. There are no popular flight routes from St. Louis to Belfast.
Search flight deals

Frequently asked questions about flying from St. Louis to Belfast

  • How far is Lambert-St Louis to Belfast by plane?

    Belfast is 3891.1 mi away from Lambert-St Louis. By plane, this route typically takes 14h 30m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Belfast?

    Prices for flights from Lambert-St Louis Airport to Belfast are refreshed on a daily basis.

  • How old do you have to be to fly from Lambert-St Louis Airport to Belfast?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Belfast.

  • What documentation or ID do you need to fly to Belfast?

    The travel and health documents required for your trip to Belfast can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Belfast. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from St. Louis to Belfast

  • How do I get Price Alerts for flights from St. Louis to Belfast?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to St. Louis from Belfast. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from St. Louis to Belfast with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Belfast?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Belfast. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Belfast with flexible booking policies on momondo?

Flights from St. Louis to Belfast with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Belfast?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Belfast.

I’m not ready to book a flight from St. Louis to Belfast right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Belfast from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Belfast Intl Airport
Belfast City Airport