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

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 38% 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.

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 September 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.

$357 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.

1:15 pm - 8:10 amSTL Lambert-St Louis-DUB Dublin

12h 55m1 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

$529United Airlines

Tue, Dec 8 - Tue, Dec 15

9:40 pm - 2:30 pmSTL Lambert-St Louis-DUB Dublin

10h 50m1 stop London Heathrow

8:40 pm - 5:29 pmDUB Dublin-STL Lambert-St Louis

26h 49m2 stops London Heathrow Charlotte Douglas

$539British Airways

Sun, Oct 18 - Tue, Nov 3

5:25 am - 8:10 amSTL Lambert-St Louis-DUB Dublin

20h 45m1 stop Chicago O'Hare Intl

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

12h 26m1 stop Toronto Pearson Intl

$542United Airlines

Tue, Dec 8 - Tue, Dec 15

2:25 pm - 10:45 amSTL Lambert-St Louis-DUB Dublin

14h 20m2 stops Atlanta Hartsfield-Jackson Boston Logan Intl

10:45 am - 9:59 pmDUB Dublin-STL Lambert-St Louis

17h 14m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

$547Delta

Sun, Oct 18 - Tue, Nov 3

12:00 pm - 8:45 amSTL Lambert-St Louis-DUB Dublin

14h 45m1 stop Atlanta Hartsfield-Jackson

10:45 am - 8:14 pmDUB Dublin-STL Lambert-St Louis

15h 29m1 stop New York John F Kennedy Intl

$547Delta

Sun, Oct 18 - Tue, Nov 3

12:00 pm - 8:45 amSTL Lambert-St Louis-DUB Dublin

14h 45m1 stop Atlanta Hartsfield-Jackson

10:45 am - 8:51 pmDUB Dublin-STL Lambert-St Louis

16h 06m2 stops New York John F Kennedy Intl Detroit Metropolitan Wayne County

$547Air France

Sun, Oct 18 - Tue, Nov 3

1:20 pm - 9:55 amSTL Lambert-St Louis-DUB Dublin

14h 35m2 stops Chicago O'Hare Intl London Heathrow

10:30 am - 10:15 pmDUB Dublin-STL Lambert-St Louis

17h 45m2 stops London Heathrow Chicago O'Hare Intl

$550British Airways

Mon, Nov 9 - Wed, Nov 18

2:00 pm - 9:40 amSTL Lambert-St Louis-DUB Dublin

13h 40m2 stops Philadelphia London Heathrow

11:30 am - 10:58 pmDUB Dublin-STL Lambert-St Louis

17h 28m1 stop Philadelphia

$553American Airlines

Tue, Feb 16 - Wed, Feb 24

10:12 am - 7:10 amSTL Lambert-St Louis-DUB Dublin

15h 58m1 stop Dallas/Fort Worth

12:55 pm - 11:33 pmDUB Dublin-STL Lambert-St Louis

16h 38m1 stop Dallas/Fort Worth

$556American Airlines

Mon, Oct 26 - Wed, Nov 4

10:21 am - 7:10 amSTL Lambert-St Louis-DUB Dublin

14h 49m1 stop Dallas/Fort Worth

12:55 pm - 11:33 pmDUB Dublin-STL Lambert-St Louis

16h 38m1 stop Dallas/Fort Worth

$556Iberia

Mon, Nov 9 - Wed, Nov 18

Cheap last minute flights

Enter your travel dates to find the best prices.

10:14 am - 9:45 amSTL Lambert-St Louis-DUB Dublin

17h 31m1 stop Dallas/Fort Worth

12:40 pm - 11:43 pmDUB Dublin-STL Lambert-St Louis

17h 03m1 stop Dallas/Fort Worth

$651Iberia

Wed, Sep 16 - Wed, Sep 23

6:30 am - 6:30 amSTL Lambert-St Louis-DUB Dublin

18h 00m1 stop Philadelphia

9:50 am - 8:20 amDUB Dublin-STL Lambert-St Louis

28h 30m2 stops Madrid Barajas Boston Logan Intl

$652Iberia

Wed, Sep 16 - Wed, Sep 23

12:10 pm - 7:45 amSTL Lambert-St Louis-DUB Dublin

13h 35m1 stop Montreal Pierre Elliott Trudeau Intl

9:20 am - 9:36 pmDUB Dublin-STL Lambert-St Louis

18h 16m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$993United Airlines

Fri, Sep 11 - Sun, Sep 13

12:10 pm - 7:45 amSTL Lambert-St Louis-DUB Dublin

13h 35m1 stop Montreal Pierre Elliott Trudeau Intl

9:20 am - 9:36 pmDUB Dublin-STL Lambert-St Louis

18h 16m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$993United Airlines

Fri, Sep 11 - Sun, Sep 13

1:54 pm - 10:15 amSTL Lambert-St Louis-DUB Dublin

14h 21m2 stops Charlotte Douglas London Heathrow

9:40 am - 8:44 pmDUB Dublin-STL Lambert-St Louis

17h 04m2 stops London Heathrow Chicago O'Hare Intl

$1,878British Airways

Mon, Sep 14 - Fri, Sep 25

11:09 am - 11:20 amSTL Lambert-St Louis-DUB Dublin

18h 11m2 stops Philadelphia London Heathrow

6:30 am - 12:27 amDUB Dublin-STL Lambert-St Louis

23h 57m2 stops London Heathrow Chicago O'Hare Intl

$1,908British Airways

Mon, Sep 14 - Fri, Sep 25

7:27 am - 5:10 amSTL Lambert-St Louis-DUB Dublin

15h 43m1 stop Chicago O'Hare Intl

1:20 pm - 8:20 pmDUB Dublin-STL Lambert-St Louis

13h 00m1 stop Toronto Pearson Intl

$3,796Aer Lingus

Tue, Sep 15 - Tue, Sep 29

7:27 am - 5:10 amSTL Lambert-St Louis-DUB Dublin

15h 43m1 stop Chicago O'Hare Intl

1:20 pm - 8:20 pmDUB Dublin-STL Lambert-St Louis

13h 00m1 stop Toronto Pearson Intl

$3,801Aer Lingus

Tue, Sep 15 - Tue, Sep 29

3:30 pm - 11:40 amSTL Lambert-St Louis-DUB Dublin

14h 10m1 stop Frankfurt am Main

6:05 am - 1:25 pmDUB Dublin-STL Lambert-St Louis

13h 20m1 stop Frankfurt am Main

$4,160Lufthansa

Mon, Sep 14 - Fri, Sep 25

12:59 pm - 9:45 amSTL Lambert-St Louis-DUB Dublin

14h 46m1 stop Chicago O'Hare Intl

9:50 am - 6:41 pmDUB Dublin-STL Lambert-St Louis

14h 51m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$7,121Lufthansa

Tue, Sep 15 - Tue, Sep 29

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British Airways flights from St. Louis to Ireland

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

British Airways

Oct 18

STL9:40 pmLambert-St Louis

10h 50m

1 stop

DUB2:30 pmDublin

Nov 3

DUB8:40 pmDublin

26h 49m

2 stops

STL5:29 pmLambert-St Louis

$539

British Airways

Oct 26

STL7:10 pmLambert-St Louis

16h 55m

2 stops

DUB5:05 pmDublin

Nov 4

DUB10:30 amDublin

19h 03m

2 stops

STL11:33 pmLambert-St Louis

$550

British Airways

Oct 30

STL11:31 amLambert-St Louis

24h 24m

2 stops

DUB4:55 pmDublin

Nov 4

DUB10:30 amDublin

19h 03m

2 stops

STL11:33 pmLambert-St Louis

$609

Delta flights from St. Louis to Ireland

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

Delta

Oct 18

STL2:25 pmLambert-St Louis

14h 20m

2 stops

DUB10:45 amDublin

Nov 3

DUB10:45 amDublin

17h 14m

2 stops

STL9:59 pmLambert-St Louis

$547

Delta

Oct 30

STL10:14 amLambert-St Louis

16h 41m

2 stops

DUB7:55 amDublin

Nov 4

DUB9:40 amDublin

14h 32m

1 stop

STL6:12 pmLambert-St Louis

$610

Delta

Oct 21

STL6:00 amLambert-St Louis

20h 45m

1 stop

DUB8:45 amDublin

Oct 28

DUB10:45 amDublin

18h 09m

2 stops

STL11:54 pmLambert-St Louis

$650

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/8

1:15 pm-8:10 am

1 stop12h 55m

Dublin

Tue 12/15

9:00 am-12:10 pm

2 stops33h 10m

$529

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sun 10/18

9:40 pm-2:30 pm

1 stop10h 50m

Dublin

Tue 11/3

8:40 pm-5:29 pm

2 stops26h 49m

$539

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/8

5:25 am-8:10 am

1 stop20h 45m

Dublin

Tue 12/15

9:00 am-3:26 pm

1 stop12h 26m

$542

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sun 10/18

2:25 pm-10:45 am

2 stops14h 20m

Dublin

Tue 11/3

10:45 am-9:59 pm

2 stops17h 14m

$547

Quickest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sun 10/18

12:00 pm-8:45 am

1 stop14h 45m

Dublin

Tue 11/3

10:45 am-8:14 pm

1 stop15h 29m

$547

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sun 10/18

12:00 pm-8:45 am

1 stop14h 45m

Dublin

Tue 11/3

10:45 am-8:51 pm

2 stops16h 06m

$547

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 11/9

1:20 pm-9:55 am

2 stops14h 35m

Dublin

Wed 11/18

10:30 am-10:15 pm

2 stops17h 45m

$550

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 2/16

2:00 pm-9:40 am

2 stops13h 40m

Dublin

Wed 2/24

11:30 am-10:58 pm

1 stop17h 28m

$553

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 10/26

10:12 am-7:10 am

1 stop15h 58m

Dublin

Wed 11/4

12:55 pm-11:33 pm

1 stop16h 38m

$556

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 11/9

10:21 am-7:10 am

1 stop14h 49m

Dublin

Wed 11/18

12:55 pm-11:33 pm

1 stop16h 38m

$556

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 $438. 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 $467.

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 $715 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 65% 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	$357
Fastest flight time	10h 50m
Direct flights	None

The best one-way flight to Ireland from St. Louis in the past 72 hours is $357. The best round-trip flight deal from St. Louis to Ireland found on momondo in the last 72 hours is $529.

The fastest flight from St. Louis to Ireland takes 10h 50m

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 September 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 1,755 reviews	Search Aer Lingus flights
British Airways	PriceFrom $429	Free Cancellation	Rating 6.7 8,210 reviews	Search British Airways flights
Lufthansa	PriceFrom $430	Free Cancellation	Rating 6.8 8,212 reviews	Search Lufthansa flights
Air Canada	PriceFrom $474	Free Cancellation	Rating 7.1 11,608 reviews	Search Air Canada flights
American Airlines	PriceFrom $482	Free Cancellation	Rating 7.1 12,047 reviews	Search American Airlines flights
Delta	PriceFrom $484	Free Cancellation	Rating 7.8 8,553 reviews	Search Delta flights
United Airlines	PriceFrom $489	Free Cancellation	Rating 7.4 10,194 reviews	Search United Airlines flights
KLM	PriceFrom $538	Free Cancellation	Rating 7.8 1,576 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 $354

Flights to Shannon, Clarefrom $579

Flights to Corkfrom $568

Flights to Knockfrom $758

Flights to Milltown (Kerry)from $723

Flights to Donegalfrom $937

Cheap flights from St. Louis to Ireland from $357

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 10/15. 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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British Airways flights from St. Louis to Ireland

Our best British Airways 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