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Cheap flights from St. Louis to Northern Ireland from £843

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BFS
27 Jul — 3 Aug1
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 27 June 2026.

Sun 6/921:40
STL
-
BHD
1 stop10h 55m
British Airways
Mon 7/918:30
BHD
-
STL
2 stops27h 50m
British Airways
Deal found 22/6£843
Mon 16/1110:45
STL
-
BHD
2 stops17h 55m
British Airways
Wed 18/1112:25
BHD
-
STL
2 stops17h 31m
British Airways
Deal found 22/6£862
Sun 19/721:40
STL
-
BHD
1 stop14h 00m
British Airways
Sat 25/716:15
BHD
-
STL
2 stops38h 01m
British Airways
Deal found 23/6£1,014
Sun 6/921:40
STL
-
BHD
1 stop10h 55m
Multiple Airlines
Mon 7/919:35
BHD
-
STL
1 stop29h 55m
Multiple Airlines
Deal found 22/6£1,201
Sat 18/715:55
STL
-
BHD
2 stops20h 20m
British Airways
Sat 25/719:05
BHD
-
STL
2 stops30h 15m
British Airways
Deal found 23/6£1,224
Mon 20/718:09
STL
-
BHD
2 stops16h 46m
KLM
Sat 25/709:50
BHD
-
STL
2 stops16h 47m
KLM
Deal found 26/6£1,260
Thu 23/713:22
STL
-
BHD
2 stops13h 58m
Delta
Sat 25/709:50
BHD
-
STL
2 stops16h 47m
Delta
Deal found 23/6£1,299
Mon 20/717:58
STL
-
BHD
3 stops20h 07m
Aer Lingus
Sat 25/717:55
BHD
-
STL
3 stops35h 37m
Aer Lingus
Deal found 23/6£1,299
Tue 30/613:20
STL
-
BFS
3 stops24h 30m
Multiple Airlines
Thu 2/706:40
BFS
-
STL
2 stops19h 27m
Multiple Airlines
Deal found 26/6£1,302
Tue 21/721:35
STL
-
BHD
1 stop11h 45m
British Airways
Sat 25/707:05
BHD
-
STL
2 stops23h 10m
British Airways
Deal found 23/6£1,328

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 27 June 2026.

Round-trip from

£862
British Airways
  • British Airways
  • 16/11-18/11
  • 4 total stops
  • 35h 26m 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 27 June 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

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sun 6/9

21:40-14:35

1 stop10h 55m

Belfast City

Mon 7/9

18:30-16:20

2 stops27h 50m

£843

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 16/11

10:45-10:40

2 stops17h 55m

Belfast City

Wed 18/11

12:25-23:56

2 stops17h 31m

£862

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 16/11

14:50-14:15

2 stops17h 25m

Belfast City

Thu 19/11

11:05-08:10

2 stops27h 05m

£862

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sun 6/9

21:40-14:35

1 stop10h 55m

Belfast City

Mon 7/9

19:35-19:30

1 stop29h 55m

£1,201

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 20/7

18:09-16:55

2 stops16h 46m

Belfast City

Sat 25/7

09:50-20:37

2 stops16h 47m

£1,260
Fastest return journey

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Wed 22/7

13:22-09:20

2 stops13h 58m

Belfast City

Sat 25/7

09:50-20:37

2 stops16h 47m

£1,261

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Thu 23/7

13:22-09:20

2 stops13h 58m

Belfast City

Sat 25/7

09:50-20:37

2 stops16h 47m

£1,299

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 20/7

17:58-20:55

3 stops20h 57m

Belfast City

Sat 25/7

09:35-19:29

2 stops15h 54m

£1,447

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sun 6/9

09:46-13:50

3 stops22h 04m

Belfast City

Mon 7/9

17:05-16:20

3 stops29h 15m

£1,455

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 20/7

14:31-15:30

2 stops18h 59m

Belfast City

Sat 25/7

19:05-19:30

1 stop30h 25m

£2,163

Flights are sorted by cheapest return flights first.

Deals found on 22/6

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 10h 55m. 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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