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.

£571 Cheap Flights from St. Louis to Northern Ireland in 2026

1 adult

0 bags

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Find the cheapest flights from St. Louis to Northern Ireland

Round-trip

Cheap return flights

Enter your travel dates to find the best prices.

16:05 - 14:15

STL

BHD

16h 10m

2 stops

09:10 - 21:12

BHD

STL

18h 02m

2 stops

£571American Airlines

Wed, 25 Feb - Sun, 1 Mar

10:37 - 10:15

STL

BHD

17h 38m

2 stops

20:25 - 23:48

BHD

STL

33h 23m

2 stops

£759British Airways

Wed, 25 Feb - Sun, 1 Mar

11:59 - 09:10

STL

BHD

15h 11m

2 stops

12:10 - 23:48

BHD

STL

17h 38m

2 stops

£796British Airways

Wed, 25 Feb - Sun, 1 Mar

08:00 - 10:15

STL

BHD

20h 15m

2 stops

10:40 - 23:48

BHD

STL

19h 08m

2 stops

£798British Airways

Wed, 25 Feb - Sun, 1 Mar

16:05 - 18:25

STL

BHD

20h 20m

3 stops

16:55 - 15:29

BHD

STL

28h 34m

3 stops

£1,654Multiple Airlines

Wed, 25 Feb - Sun, 1 Mar

British Airways flights from St. Louis to Northern Ireland

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

British Airways

25 Feb

STL10:37Lambert-St Louis

17h 38m

2 stops

BHD10:15Belfast City

1 Mar

BHD20:25Belfast City

33h 23m

2 stops

STL23:48Lambert-St Louis

£759

British Airways

25 Feb

STL11:59Lambert-St Louis

15h 11m

2 stops

BHD09:10Belfast City

1 Mar

BHD12:10Belfast City

17h 38m

2 stops

STL23:48Lambert-St Louis

£796

British Airways

25 Feb

STL08:00Lambert-St Louis

20h 15m

2 stops

BHD10:15Belfast City

1 Mar

BHD10:40Belfast City

19h 08m

2 stops

STL23:48Lambert-St Louis

£798

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

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Wed 25/2

16:05-14:15

2 stops16h 10m

Belfast City

Sun 1/3

09:10-21:12

2 stops18h 02m

£571

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Wed 25/2

10:37-10:15

2 stops17h 38m

Belfast City

Sun 1/3

20:25-23:48

2 stops33h 23m

£759

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Wed 25/2

11:59-09:10

2 stops15h 11m

Belfast City

Sun 1/3

12:10-23:48

2 stops17h 38m

£796

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Wed 25/2

08:00-10:15

2 stops20h 15m

Belfast City

Sun 1/3

10:40-23:48

2 stops19h 08m

£798

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Wed 25/2

16:05-18:25

3 stops20h 20m

Belfast City

Sun 1/3

16:55-15:29

3 stops28h 34m

£1,654

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	15h 11m
Direct flights	None

The fastest flight from St. Louis to Northern Ireland takes 15h 11m

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.