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Cheap flights from St. Louis to Northern Ireland from £282

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BFS
24 May — 31 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St. Louis to Northern Ireland

Enter your travel dates to find the best prices.

Cheapest flights from St. Louis to Northern Ireland
Explore the most affordable flight options available from St. Louis to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 April 2026.

Sun 23/821:40
STL
-
BHD
1 stop10h 55m
British Airways
Wed 26/811:35
BHD
-
STL
1 stop13h 55m
British Airways
Deal found 21/4£674
Fri 16/1021:35
STL
-
BHD
1 stop14h 35m
British Airways
Tue 20/1009:40
BHD
-
STL
1 stop15h 50m
British Airways
Deal found 23/4£695
Tue 4/818:12
STL
-
BHD
2 stops17h 23m
American Airlines
Thu 13/809:35
BHD
-
STL
2 stops19h 48m
American Airlines
Deal found 19/4£696
Fri 16/1018:51
STL
-
BHD
2 stops17h 19m
Multiple Airlines
Tue 20/1013:45
BHD
-
STL
1 stop11h 45m
Multiple Airlines
Deal found 23/4£717
Tue 4/821:35
STL
-
BHD
1 stop14h 00m
British Airways
Thu 13/809:35
BHD
-
STL
2 stops18h 50m
British Airways
Deal found 19/4£718
Fri 16/1016:51
STL
-
BHD
2 stops19h 19m
American Airlines
Tue 20/1009:40
BHD
-
STL
2 stops19h 45m
American Airlines
Deal found 23/4£720
Sat 1/815:55
STL
-
BHD
2 stops34h 45m
British Airways
Tue 11/820:25
BHD
-
STL
2 stops33h 26m
British Airways
Deal found 19/4£787
Tue 1/1214:17
STL
-
BHD
2 stops20h 28m
British Airways
Fri 4/1206:45
BHD
-
STL
2 stops23h 13m
British Airways
Deal found 23/4£833
Sat 6/608:40
STL
-
BFS
3 stops28h 15m
Multiple Airlines
Sat 13/606:55
BFS
-
STL
3 stops35h 11m
Multiple Airlines
Deal found 22/4£878
Fri 5/614:15
STL
-
BFS
2 stops25h 35m
Multiple Airlines
Fri 12/618:40
BFS
-
STL
3 stops47h 26m
Multiple Airlines
Deal found 21/4£907

Find flight deals from St. Louis to Northern Ireland

Keep the following information in mind while searching for St. Louis to Northern Ireland flight deals. Data was last updated 24 April 2026.

Round-trip from

£674

One-way from

£282
British Airways
  • British Airways
  • 23/8-26/8
  • 2 total stops
  • 24h 50m total
  • St. Louis to Northern Ireland
Search Deals
British Airways
  • British Airways
  • 16/10
  • 1 total stop
  • 14h 35m total
  • St. Louis to Northern Ireland
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from St. Louis to Northern Ireland 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 858,174 searches. Data last updated 24 April 2026.
Use the filters below to find and compare flights from St. Louis to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 16/10

18:51-18:10

2 stops17h 19m

Belfast City

Tue 20/10

13:45-19:30

1 stop11h 45m

£717

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 16/10

16:51-18:10

2 stops19h 19m

Belfast City

Tue 20/10

09:40-23:25

2 stops19h 45m

£720

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sat 1/8

15:55-08:40

2 stops34h 45m

Belfast City

Tue 11/8

20:25-23:51

2 stops33h 26m

£787

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sun 23/8

13:37-14:35

2 stops18h 58m

Belfast City

Wed 26/8

11:35-19:30

1 stop13h 55m

£826

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Tue 4/8

21:35-17:35

1 stop14h 00m

Belfast City

Thu 13/8

20:35-19:30

1 stop28h 55m

£856

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

Sat 6/6

08:40-18:55

3 stops28h 15m

Belfast Intl

Sat 13/6

06:55-12:06

3 stops35h 11m

£878

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

Fri 5/6

14:15-21:50

2 stops25h 35m

Belfast Intl

Fri 12/6

18:40-12:06

3 stops47h 26m

£907
Cheapest one-way
Fastest single journey

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 16/10

21:35-18:10

1 stop14h 35m

£282

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 16/10

16:32-18:10

2 stops19h 38m

£289

Flights are sorted by cheapest return flights first.

Deals found on 23/4

Sorted by cheapest first

Best time to book a flight from St. Louis to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from St. Louis with our price prediction graph.
Estimated return 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 St. Louis to Northern Ireland
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Northern Ireland. 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 Northern Ireland?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to Northern Ireland from St. Louis.

  • How long is the flight from St. Louis to Northern Ireland?

    Departing from St. Louis to Northern Ireland will take you 19h 19m. There are 3893 mi between St. Louis and Northern Ireland. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Yes. In addition to deals on St. Louis to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Northern Ireland.

  • Can I find deals for business class flights from St. Louis to Northern Ireland?

    Yes. Cheapflights offers flight deals from St. Louis to Northern Ireland 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

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How does Cheapflights help users find flights from St. Louis to Northern Ireland?

When you search for this flight from St. Louis to Northern Ireland, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Northern Ireland?

Millions of users choose and trust Cheapflights to book the best flight deals from St. Louis to Northern Ireland for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from St. Louis to Northern Ireland with no change fees?

Certainly. Search results for flights to Northern Ireland from St. Louis shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from St. Louis to Northern Ireland become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Northern Ireland from St. Louis today and book when prices fit your budget.

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