How do I get Price Alerts for flights from St. Louis to Northern Ireland?

Search flight deals from St. Louis to Northern Ireland . While viewing offers you’ll have the option to create a Price Alert.

How can I save money on flights from St. Louis to Northern Ireland 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 compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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

Prices for flights from Lambert-St Louis Airport to Northern Ireland are updated daily.

How old do you have to be to fly from Lambert-St Louis Airport to Northern Ireland?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Northern Ireland.

What documentation or ID do you need to fly to Northern Ireland?

The travel and health documents required for your trip to Northern Ireland 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 Northern Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£693 Cheap Flights from St. Louis to Northern Ireland in 2026

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Find the cheapest flights from St. Louis to Northern Ireland

Round-trip

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

13:01 - 10:30

STL

BHD

15h 29m

2 stops

11:35 - 23:33

BHD

STL

17h 58m

2 stops

£693American Airlines

Sun, 6 Sep - Wed, 16 Sep

07:23 - 12:55

STL

BHD

23h 32m

2 stops

10:05 - 23:38

BHD

STL

19h 33m

2 stops

£703British Airways

Mon, 7 Sep - Wed, 16 Sep

10:55 - 16:55

STL

BHD

24h 00m

2 stops

17:30 - 23:01

BHD

STL

35h 31m

2 stops

£708Delta

Tue, 8 Sep - Wed, 16 Sep

07:23 - 12:55

STL

BHD

23h 32m

2 stops

11:35 - 19:30

BHD

STL

13h 55m

1 stop

£720British Airways

Mon, 7 Sep - Wed, 16 Sep

13:37 - 10:30

STL

BHD

14h 53m

2 stops

09:40 - 23:38

BHD

STL

19h 58m

2 stops

£726British Airways

Sun, 6 Sep - Tue, 15 Sep

13:30 - 09:20

STL

BHD

13h 50m

2 stops

09:50 - 23:37

BHD

STL

19h 47m

2 stops

£731KLM

Sun, 6 Sep - Thu, 17 Sep

21:35 - 08:45

STL

BHD

29h 10m

1 stop

11:35 - 19:30

BHD

STL

13h 55m

1 stop

£737British Airways

Wed, 9 Sep - Wed, 16 Sep

15:42 - 16:55

STL

BHD

19h 13m

2 stops

09:45 - 16:55

BHD

STL

37h 10m

2 stops

£751Delta

Tue, 8 Sep - Sun, 13 Sep

17:45 - 16:55

STL

BHD

17h 10m

2 stops

17:30 - 15:57

BHD

STL

28h 27m

2 stops

£768Multiple Airlines

Sat, 5 Sep - Wed, 16 Sep

15:30 - 21:15

STL

BFS

23h 45m

2 stops

21:05 - 20:25

BFS

STL

29h 20m

3 stops

£1,080Multiple Airlines

Fri, 8 May - Fri, 15 May

British Airways flights from St. Louis to Northern Ireland

Our best British Airways deals on St. Louis to Northern Ireland flight tickets

British Airways

7 Sept

STL07:23Lambert-St Louis

23h 32m

2 stops

BHD12:55Belfast City

16 Sept

BHD10:05Belfast City

19h 33m

2 stops

STL23:38Lambert-St Louis

£703

British Airways

7 Sept

STL07:23Lambert-St Louis

23h 32m

2 stops

BHD12:55Belfast City

16 Sept

BHD11:35Belfast City

13h 55m

1 stop

STL19:30Lambert-St Louis

£720

British Airways

6 Sept

STL13:37Lambert-St Louis

14h 53m

2 stops

BHD10:30Belfast City

15 Sept

BHD09:40Belfast City

19h 58m

2 stops

STL23:38Lambert-St Louis

£726

Delta flights from St. Louis to Northern Ireland

Our best Delta deals on St. Louis to Northern Ireland flight tickets

Delta

8 Sept

STL10:55Lambert-St Louis

24h 00m

2 stops

BHD16:55Belfast City

16 Sept

BHD17:30Belfast City

35h 31m

2 stops

STL23:01Lambert-St Louis

£708

Delta

8 Sept

STL15:42Lambert-St Louis

19h 13m

2 stops

BHD16:55Belfast City

13 Sept

BHD09:45Belfast City

37h 10m

2 stops

STL16:55Lambert-St Louis

£751

Delta

8 Sept

STL16:13Lambert-St Louis

18h 42m

2 stops

BHD16:55Belfast City

14 Sept

BHD17:30Belfast City

29h 19m

2 stops

STL16:49Lambert-St Louis

£815

momondo Fare Finder

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

Sun 6/9

13:01-10:30

2 stops15h 29m

Belfast City

Wed 16/9

11:35-23:33

2 stops17h 58m

£693

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 7/9

07:23-12:55

2 stops23h 32m

Belfast City

Wed 16/9

10:05-23:38

2 stops19h 33m

£703

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Tue 8/9

10:55-16:55

2 stops24h 00m

Belfast City

Wed 16/9

17:30-23:01

2 stops35h 31m

£708

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 7/9

07:23-12:55

2 stops23h 32m

Belfast City

Wed 16/9

11:35-19:30

1 stop13h 55m

£720

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sun 6/9

13:37-10:30

2 stops14h 53m

Belfast City

Tue 15/9

09:40-23:38

2 stops19h 58m

£726

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sun 6/9

13:30-09:20

2 stops13h 50m

Belfast City

Thu 17/9

09:50-23:37

2 stops19h 47m

£731

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Wed 9/9

21:35-08:45

1 stop29h 10m

Belfast City

Wed 16/9

11:35-19:30

1 stop13h 55m

£737

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Tue 8/9

15:42-16:55

2 stops19h 13m

Belfast City

Sun 13/9

09:45-16:55

2 stops37h 10m

£751

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sat 5/9

17:45-16:55

2 stops17h 10m

Belfast City

Wed 16/9

17:30-15:57

2 stops28h 27m

£768

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

Fri 8/5

15:30-21:15

2 stops23h 45m

Belfast Intl

Fri 15/5

21:05-20:25

3 stops29h 20m

£1,080

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

Cheap St. Louis to Northern Ireland flight deals and tips

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

Fastest flight time	17h 13m
Direct flights	None

The fastest flight from St. Louis to Northern Ireland takes 17h 13m

There are no direct flights from St. Louis to Northern Ireland. There are no popular flight routes from St. Louis to Northern Ireland.

Search flight deals

When did momondo last update prices for flights from Lambert-St Louis Airport to Northern Ireland?
Prices for flights from Lambert-St Louis Airport to Northern Ireland are updated daily.
How old do you have to be to fly from Lambert-St Louis Airport to Northern Ireland?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Northern Ireland.
What documentation or ID do you need to fly to Northern Ireland?
The travel and health documents required for your trip to Northern Ireland 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 Northern Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

How do I get Price Alerts for flights from St. Louis to Northern Ireland?
Search flight deals from St. Louis to Northern Ireland. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from St. Louis to Northern Ireland 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 compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for St. Louis to Northern Ireland flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between St. Louis and Northern Ireland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for St. Louis to Northern Ireland flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.