What airlines fly to Ireland?

Aer Lingus, United Airlines and American Airlines are the top three most popular airlines that fly to Ireland from St. Louis according to our data. Aer Lingus is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 8 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Lambert-St Louis to Ireland?

Delta, United Airlines, and Air Canada are the most popular carriers operating from Lambert-St Louis to Ireland

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

Prices for flights from Lambert-St Louis Airport to Ireland are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Ireland?

The number of operators available for flights from Lambert-St Louis Airport to Ireland is 8 as of August 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Ireland.

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

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

$277 Cheap Flights from St. Louis to Ireland in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Ireland

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:46 pm - 9:45 amSTL Lambert-St Louis-DUB Dublin

14h 59m1 stop Dallas/Fort Worth

12:55 pm - 8:19 pmDUB Dublin-STL Lambert-St Louis

13h 24m1 stop Dallas/Fort Worth

$665Finnair

Mon, Oct 19 - Wed, Nov 4

11:05 am - 9:55 amSTL Lambert-St Louis-DUB Dublin

16h 50m1 stop Newark

9:00 am - 10:10 amDUB Dublin-STL Lambert-St Louis

31h 10m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$679United Airlines

Tue, Dec 8 - Tue, Dec 15

5:40 pm - 8:10 amSTL Lambert-St Louis-DUB Dublin

32h 30m1 stop Chicago O'Hare Intl

9:00 am - 12:10 pmDUB Dublin-STL Lambert-St Louis

33h 10m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$679United Airlines

Tue, Dec 1 - Tue, Dec 15

9:40 am - 7:10 amSTL Lambert-St Louis-DUB Dublin

15h 30m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:00 am - 3:26 pmDUB Dublin-STL Lambert-St Louis

12h 26m1 stop Toronto Pearson Intl

$684Multiple Airlines

Wed, Jan 20 - Thu, Jan 28

3:40 pm - 4:30 pmSTL Lambert-St Louis-DUB Dublin

18h 50m1 stop Frankfurt am Main

5:10 am - 1:45 pmDUB Dublin-STL Lambert-St Louis

14h 35m1 stop Frankfurt am Main

$691Lufthansa

Wed, Feb 10 - Wed, Feb 17

7:30 am - 7:10 amSTL Lambert-St Louis-DUB Dublin

41h 40m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:00 am - 12:10 pmDUB Dublin-STL Lambert-St Louis

33h 10m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$707Air Canada

Tue, Nov 10 - Thu, Nov 19

8:30 am - 7:10 amSTL Lambert-St Louis-DUB Dublin

16h 40m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:00 am - 12:10 pmDUB Dublin-STL Lambert-St Louis

33h 10m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$707Air Canada

Wed, Nov 11 - Thu, Nov 19

7:03 am - 8:45 amSTL Lambert-St Louis-DUB Dublin

19h 42m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

8:50 am - 8:32 pmDUB Dublin-STL Lambert-St Louis

17h 42m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$707Delta

Tue, Dec 8 - Tue, Dec 15

7:03 am - 8:45 amSTL Lambert-St Louis-DUB Dublin

19h 42m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

5:45 am - 6:13 pmDUB Dublin-STL Lambert-St Louis

18h 28m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$707Delta

Tue, Dec 8 - Tue, Dec 15

4:40 pm - 11:00 amSTL Lambert-St Louis-DUB Dublin

13h 20m1 stop Frankfurt am Main

5:10 am - 1:45 pmDUB Dublin-STL Lambert-St Louis

14h 35m1 stop Frankfurt am Main

$723Lufthansa

Sun, Oct 25 - Fri, Nov 6

Cheap last minute flights

Enter your travel dates to find the best prices.

8:55 am - 7:45 amSTL Lambert-St Louis-DUB Dublin

16h 50m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

9:20 am - 2:00 pmDUB Dublin-STL Lambert-St Louis

10h 40m1 stop Toronto Pearson Intl

$941Air Canada

Wed, Sep 2 - Sat, Sep 12

8:48 am - 7:55 amSTL Lambert-St Louis-DUB Dublin

17h 07m1 stop Minneapolis St Paul

5:55 am - 3:14 pmDUB Dublin-STL Lambert-St Louis

15h 19m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$944KLM

Wed, Sep 2 - Sat, Sep 12

8:55 am - 7:45 amSTL Lambert-St Louis-DUB Dublin

16h 50m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

9:20 am - 6:41 pmDUB Dublin-STL Lambert-St Louis

15h 21m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$944Air Canada

Wed, Sep 2 - Sat, Sep 12

10:33 am - 10:00 amSTL Lambert-St Louis-DUB Dublin

17h 27m1 stop Detroit Metropolitan Wayne County

8:55 am - 8:35 pmDUB Dublin-STL Lambert-St Louis

17h 40m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$945Delta

Wed, Sep 2 - Sat, Sep 12

5:30 pm - 10:00 amSTL Lambert-St Louis-DUB Dublin

10h 30m1 stop Detroit Metropolitan Wayne County

5:55 am - 3:14 pmDUB Dublin-STL Lambert-St Louis

15h 19m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$945Multiple Airlines

Wed, Sep 2 - Sat, Sep 12

3:25 pm - 9:35 amSTL Lambert-St Louis-DUB Dublin

12h 10m1 stop Charlotte Douglas

9:30 am - 9:44 pmDUB Dublin-STL Lambert-St Louis

18h 14m1 stop Philadelphia

$948American Airlines

Wed, Sep 2 - Sat, Sep 12

11:00 am - 8:15 amSTL Lambert-St Louis-DUB Dublin

15h 15m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

5:55 am - 3:14 pmDUB Dublin-STL Lambert-St Louis

15h 19m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$949Delta

Wed, Sep 2 - Sat, Sep 12

5:34 pm - 12:40 pmSTL Lambert-St Louis-DUB Dublin

13h 06m2 stops Minneapolis St Paul Amsterdam Schiphol

5:55 am - 3:14 pmDUB Dublin-STL Lambert-St Louis

15h 19m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$953KLM

Wed, Sep 2 - Sat, Sep 12

3:25 pm - 9:35 amSTL Lambert-St Louis-DUB Dublin

12h 10m1 stop Charlotte Douglas

9:30 am - 9:44 pmDUB Dublin-STL Lambert-St Louis

18h 14m1 stop Philadelphia

$998American Airlines

Wed, Sep 2 - Sat, Sep 12

8:55 am - 7:45 amSTL Lambert-St Louis-DUB Dublin

16h 50m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

9:20 am - 2:02 pmDUB Dublin-STL Lambert-St Louis

10h 42m1 stop Toronto Pearson Intl

$1,127Multiple Airlines

Wed, Sep 2 - Fri, Sep 4

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United Airlines flights from St. Louis to Ireland

Our best United Airlines deals on St. Louis to Ireland flight tickets

United Airlines

Dec 8

STL1:15 pmLambert-St Louis

12h 55m

1 stop

DUB8:10 amDublin

Dec 15

DUB9:00 amDublin

33h 10m

2 stops

STL12:10 pmLambert-St Louis

$679

United Airlines

Dec 8

STL11:05 amLambert-St Louis

14h 25m

1 stop

DUB7:30 amDublin

Dec 15

DUB9:00 amDublin

12h 26m

1 stop

STL3:26 pmLambert-St Louis

$692

United Airlines

Jan 13

STL1:08 pmLambert-St Louis

13h 02m

1 stop

DUB8:10 amDublin

Jan 21

DUB9:00 amDublin

32h 09m

3 stops

STL11:09 amLambert-St Louis

$697

Delta flights from St. Louis to Ireland

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

Delta

Dec 8

STL7:03 amLambert-St Louis

19h 42m

2 stops

DUB8:45 amDublin

Dec 15

DUB8:50 amDublin

17h 42m

2 stops

STL8:32 pmLambert-St Louis

$707

Delta

Oct 25

STL9:47 amLambert-St Louis

17h 08m

1 stop

DUB7:55 amDublin

Nov 6

DUB5:45 amDublin

21h 06m

2 stops

STL8:51 pmLambert-St Louis

$723

Delta

Oct 26

STL6:47 amLambert-St Louis

20h 58m

2 stops

DUB8:45 amDublin

Nov 4

DUB8:50 amDublin

18h 01m

2 stops

STL8:51 pmLambert-St Louis

$727

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 10/19

12:46 pm-9:45 am

1 stop14h 59m

Dublin

Wed 11/4

12:55 pm-8:19 pm

1 stop13h 24m

$665

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/8

11:05 am-9:55 am

1 stop16h 50m

Dublin

Tue 12/15

9:00 am-10:10 am

2 stops31h 10m

$679

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/1

5:40 pm-8:10 am

1 stop32h 30m

Dublin

Tue 12/15

9:00 am-12:10 pm

2 stops33h 10m

$679

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 1/20

9:40 am-7:10 am

2 stops15h 30m

Dublin

Thu 1/28

9:00 am-3:26 pm

1 stop12h 26m

$684

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 2/10

3:40 pm-4:30 pm

1 stop18h 50m

Dublin

Wed 2/17

5:10 am-1:45 pm

1 stop14h 35m

$691

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 11/10

7:30 am-7:10 am

2 stops41h 40m

Dublin

Thu 11/19

9:00 am-12:10 pm

2 stops33h 10m

$707

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 11/11

8:30 am-7:10 am

2 stops16h 40m

Dublin

Thu 11/19

9:00 am-12:10 pm

2 stops33h 10m

$707

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/8

7:03 am-8:45 am

2 stops19h 42m

Dublin

Tue 12/15

8:50 am-8:32 pm

2 stops17h 42m

$707

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/8

7:03 am-8:45 am

2 stops19h 42m

Dublin

Tue 12/15

5:45 am-6:13 pm

2 stops18h 28m

$707

Quickest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sun 10/25

4:40 pm-11:00 am

1 stop13h 20m

Dublin

Fri 11/6

5:10 am-1:45 pm

1 stop14h 35m

$723

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Ireland?

In general, September is the cheapest month to fly from St. Louis to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $435. If you aren’t able to travel to Ireland during the month of September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $485.

How far in advance should I book a flight from St. Louis to Ireland?

You are more likely to see cheaper flights to Ireland from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $704 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from St. Louis for as low as $503 on momondo.

Can stopping save me money on St. Louis to Ireland flights?

You could potentially save up to 83% on your flight if you consider stops on a St. Louis to Ireland flight.

Cheap St. Louis to Ireland flight deals and tips

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

Best Price Found	$277
Fastest flight time	11h 35m
Direct flights	None

The best one-way flight to Ireland from St. Louis in the past 72 hours is $277. The best round-trip flight deal from St. Louis to Ireland found on momondo in the last 72 hours is $665.

The fastest flight from St. Louis to Ireland takes 11h 35m

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

Search flight deals

Frequently asked questions about flying from St. Louis to Ireland

When did momondo last update prices for flights from Lambert-St Louis Airport to Ireland?
Prices for flights from Lambert-St Louis Airport to Ireland are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Ireland?
The number of operators available for flights from Lambert-St Louis Airport to Ireland is 8 as of August 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Ireland?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Ireland.
What documentation or ID do you need to fly to Ireland?
The travel and health documents required for your trip to 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 Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from St. Louis to Ireland

Compare and see reviews for airlines that fly from St. Louis to Ireland with momondo

Airline	Rating	Free Cancellation	Price
Aer Lingus	PriceFrom $325	Free Cancellation	Rating 7.3 1,731 reviews	Search Aer Lingus flights
British Airways	PriceFrom $429	Free Cancellation	Rating 6.7 8,192 reviews	Search British Airways flights
Lufthansa	PriceFrom $430	Free Cancellation	Rating 6.8 8,228 reviews	Search Lufthansa flights
Air Canada	PriceFrom $474	Free Cancellation	Rating 7.1 11,551 reviews	Search Air Canada flights
American Airlines	PriceFrom $482	Free Cancellation	Rating 7.1 12,025 reviews	Search American Airlines flights
Delta	PriceFrom $484	Free Cancellation	Rating 7.8 8,537 reviews	Search Delta flights
United Airlines	PriceFrom $489	Free Cancellation	Rating 7.4 10,135 reviews	Search United Airlines flights
KLM	PriceFrom $532	Free Cancellation	Rating 7.8 1,567 reviews	Search KLM flights

Why use momondo?

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

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

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Ireland.

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

Price alerts on flights to Ireland from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Popular cities in Ireland

Flights to Dublinfrom $457

Flights to Shannon, Clarefrom $536

Flights to Corkfrom $660

Flights to Knockfrom $751

Flights to Milltown (Kerry)from $655

Flights to Donegalfrom $960

Cheap flights from St. Louis to Ireland from $277

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Ireland departing on 10/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from St. Louis to Ireland

Our best United Airlines deals on St. Louis to Ireland flight tickets

Delta flights from St. Louis to Ireland

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

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Ireland that are best for you.

See travel insights to Ireland from

How to get the cheapest flight ticket from St. Louis to Ireland

What is the cheapest month to fly to Ireland?

How far in advance should I book a flight from St. Louis to Ireland?

Can stopping save me money on St. Louis to Ireland flights?

What is the cheapest airline that flies from Lambert-St Louis to Ireland?

What airlines fly to Ireland?

Cheap St. Louis to Ireland flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from St. Louis to Ireland

Best airlines flying from St. Louis to Ireland

Compare and see reviews for airlines that fly from St. Louis to Ireland with momondo

Why use momondo?

An easier way to manage your Ireland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ireland

Popular cities in Ireland

Popular flights according to clicks in the last 7 days on momondo

St. Louis flight routes

According to popular flight searches on momondo this year

Ireland flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Ireland

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Ireland

List of cabin classes available on flights landing in Ireland. Availability may vary depending on flight origin and airline.

Complete your trip to Ireland

Explore popular destinations other users love

According to popular flight searches on momondo this year