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.

£939 Cheap Flights from St. Louis to Northern Ireland in 2026

Voted winner of Europe's Best Travel App 2023

Find the cheapest flights from St. Louis to Northern Ireland

Return

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

08:55 - 19:15

STL

BFS

28h 20m

2 stops

07:35 - 22:59

BFS

STL

21h 24m

3 stops

£939Multiple Airlines

Wed, 12 Aug - Wed, 19 Aug

18:09 - 16:55

STL

BHD

16h 46m

2 stops

09:50 - 20:37

BHD

STL

16h 47m

2 stops

£1,260KLM

Mon, 20 Jul - Sat, 25 Jul

17:58 - 20:55

STL

BHD

20h 57m

3 stops

09:35 - 19:29

BHD

STL

15h 54m

2 stops

£1,447Multiple Airlines

Mon, 20 Jul - Sat, 25 Jul

17:58 - 20:55

STL

BHD

20h 57m

3 stops

11:05 - 09:10

BHD

STL

28h 05m

3 stops

£1,826Multiple Airlines

Mon, 20 Jul - Sat, 25 Jul

14:31 - 15:30

STL

BHD

18h 59m

2 stops

19:05 - 19:30

BHD

STL

30h 25m

1 stop

£2,164British Airways

Mon, 20 Jul - Sat, 25 Jul

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KLM flights from St. Louis to Northern Ireland

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

KLM

20 Jul

STL18:09Lambert-St Louis

16h 46m

2 stops

BHD16:55Belfast City

25 Jul

BHD09:50Belfast City

16h 47m

2 stops

STL20:37Lambert-St Louis

£1,260

KLM

30 Jun

STL17:36Lambert-St Louis

17h 19m

2 stops

BHD16:55Belfast City

2 Jul

BHD17:30Belfast City

29h 53m

2 stops

STL17:23Lambert-St Louis

£1,340

British Airways flights from St. Louis to Northern Ireland

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

British Airways

30 Jun

STL21:35Lambert-St Louis

15h 20m

1 stop

BHD18:55Belfast City

2 Jul

BHD19:30Belfast City

30h 00m

1 stop

STL19:30Lambert-St Louis

£1,987

British Airways

20 Jul

STL14:31Lambert-St Louis

18h 59m

2 stops

BHD15:30Belfast City

25 Jul

BHD19:05Belfast City

30h 25m

1 stop

STL19:30Lambert-St Louis

£2,164

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

Wed 12/8

08:55-19:15

2 stops28h 20m

Belfast Intl

Wed 19/8

07:35-22:59

3 stops21h 24m

£939

Fastest return journey

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

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

Mon 20/7

17:58-20:55

3 stops20h 57m

Belfast City

Sat 25/7

11:05-09:10

3 stops28h 05m

£1,826

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

£2,164

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	16h 46m
Direct flights	None

The fastest flight from St. Louis to Northern Ireland takes 16h 46m

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

Frequently asked questions about flying from St. Louis to Northern Ireland

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.

Frequently asked questions about flying from St. Louis to Northern Ireland

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.