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.

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

United Airlines, Aer Lingus, and Delta 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 October 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.

$379 Cheap Flights from St. Louis to Ireland in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Ireland

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:00 am - 8:10 amSTL Lambert-St Louis-DUB Dublin

21h 10m1 stop Chicago O'Hare Intl

9:00 am - 3:57 pmDUB Dublin-STL Lambert-St Louis

36h 57m2 stops Toronto Pearson Intl Newark

$680United Airlines

Mon, Feb 15 - Thu, Feb 18

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

10h 50m1 stop London Heathrow

12:50 pm - 7:30 pmDUB Dublin-STL Lambert-St Louis

12h 40m1 stop London Heathrow

$684British Airways

Sun, Mar 28 - Fri, Apr 2

8:15 am - 7:10 amSTL Lambert-St Louis-DUB Dublin

16h 55m2 stops Chicago O'Hare Intl Toronto Pearson Intl

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

14h 35m1 stop Frankfurt am Main

$684Multiple Airlines

Wed, Jan 6 - Wed, Jan 13

9:22 am - 7:10 amSTL Lambert-St Louis-DUB Dublin

15h 48m2 stops Chicago O'Hare Intl Toronto Pearson Intl

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

14h 35m1 stop Frankfurt am Main

$684Multiple Airlines

Wed, Jan 6 - Fri, Jan 22

7:29 am - 8:10 amSTL Lambert-St Louis-DUB Dublin

18h 41m1 stop Chicago O'Hare Intl

9:00 am - 12:15 pmDUB Dublin-STL Lambert-St Louis

33h 15m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$685United Airlines

Mon, Jan 11 - Thu, Jan 14

3:40 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

$687Lufthansa

Wed, Jan 6 - Fri, Jan 22

6:45 pm - 4:55 pmSTL Lambert-St Louis-DUB Dublin

16h 10m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

5:55 am - 1:25 pmDUB Dublin-STL Lambert-St Louis

13h 30m1 stop Frankfurt am Main

$687Lufthansa

Sun, Mar 28 - Fri, Apr 2

7:29 am - 9:55 amSTL Lambert-St Louis-DUB Dublin

20h 26m2 stops Chicago O'Hare Intl London Heathrow

8:40 pm - 4:43 pmDUB Dublin-STL Lambert-St Louis

26h 03m2 stops London Heathrow Chicago O'Hare Intl

$696British Airways

Mon, Feb 15 - Thu, Feb 18

2:11 pm - 9:40 amSTL Lambert-St Louis-DUB Dublin

13h 29m2 stops Chicago O'Hare Intl London Heathrow

11:30 am - 10:34 pmDUB Dublin-STL Lambert-St Louis

17h 04m2 stops Philadelphia Chicago O'Hare Intl

$709American Airlines

Tue, Jan 26 - Fri, Jan 29

1:17 pm - 8:40 amSTL Lambert-St Louis-DUB Dublin

13h 23m1 stop Philadelphia

11:30 am - 8:46 pmDUB Dublin-STL Lambert-St Louis

15h 16m1 stop Philadelphia

$726American Airlines

Tue, Dec 8 - Tue, Dec 15

Cheap last minute flights

Enter your travel dates to find the best prices.

11:35 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

16h 40m2 stops Chicago O'Hare Intl Newark

12:30 pm - 9:21 pmSNN Shannon-STL Lambert-St Louis

14h 51m2 stops Newark Chicago O'Hare Intl

$905United Airlines

Sun, Oct 4 - Tue, Oct 20

9:04 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

19h 11m2 stops Chicago O'Hare Intl Newark

12:30 pm - 9:09 pmSNN Shannon-STL Lambert-St Louis

14h 39m1 stop Newark

$905United Airlines

Sun, Oct 4 - Tue, Oct 20

2:40 pm - 8:15 amSTL Lambert-St Louis-DUB Dublin

11h 35m1 stop Toronto Pearson Intl

5:55 am - 1:25 pmDUB Dublin-STL Lambert-St Louis

13h 30m1 stop Frankfurt am Main

$930Multiple Airlines

Wed, Oct 7 - Wed, Oct 14

2:40 pm - 8:15 amSTL Lambert-St Louis-DUB Dublin

11h 35m1 stop Toronto Pearson Intl

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

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

$938Multiple Airlines

Wed, Oct 7 - Wed, Oct 14

9:35 pm - 6:00 pmSTL Lambert-St Louis-DUB Dublin

14h 25m1 stop London Heathrow

12:50 pm - 7:30 pmDUB Dublin-STL Lambert-St Louis

12h 40m1 stop London Heathrow

$957British Airways

Wed, Oct 7 - Wed, Oct 14

11:35 am - 8:15 amSTL Lambert-St Louis-DUB Dublin

14h 40m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:20 am - 12:13 pmDUB Dublin-STL Lambert-St Louis

32h 53m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$958Air Canada

Wed, Oct 7 - Wed, Oct 14

8:55 am - 8:15 amSTL Lambert-St Louis-DUB Dublin

17h 20m1 stop Toronto Pearson Intl

9:20 am - 12:13 pmDUB Dublin-STL Lambert-St Louis

32h 53m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$959Air Canada

Wed, Oct 7 - Wed, Oct 14

10:14 am - 8:15 amSTL Lambert-St Louis-DUB Dublin

16h 01m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

5:55 am - 1:53 pmDUB Dublin-STL Lambert-St Louis

13h 58m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$973Delta

Wed, Oct 7 - Wed, Oct 14

5:27 pm - 10:35 amSTL Lambert-St Louis-DUB Dublin

11h 08m1 stop Chicago O'Hare Intl

4:45 pm - 12:19 amDUB Dublin-STL Lambert-St Louis

13h 34m1 stop Chicago O'Hare Intl

$1,088Aer Lingus

Tue, Oct 6 - Thu, Oct 8

9:35 pm - 8:35 pmSTL Lambert-St Louis-SNN Shannon

17h 00m1 stop London Heathrow

8:05 pm - 7:18 pmSNN Shannon-STL Lambert-St Louis

28h 13m2 stops London Heathrow Charlotte Douglas

$1,140British Airways

Wed, Oct 7 - Tue, Oct 27

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Delta flights from St. Louis to Ireland

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

Delta

Nov 9

STL6:00 amLambert-St Louis

19h 45m

1 stop

DUB7:45 amDublin

Nov 18

DUB5:45 amDublin

18h 28m

2 stops

STL6:13 pmLambert-St Louis

$722

Delta

Dec 8

STL10:06 amLambert-St Louis

17h 39m

2 stops

DUB9:45 amDublin

Dec 24

DUB8:50 amDublin

19h 14m

2 stops

STL10:04 pmLambert-St Louis

$726

Delta

Dec 12

STL5:31 pmLambert-St Louis

34h 14m

2 stops

DUB9:45 amDublin

Dec 24

DUB8:50 amDublin

19h 14m

2 stops

STL10:04 pmLambert-St Louis

$737

British Airways flights from St. Louis to Ireland

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

British Airways

Jan 9

STL8:19 pmLambert-St Louis

31h 36m

2 stops

DUB9:55 amDublin

Jan 19

DUB8:50 amDublin

19h 07m

2 stops

STL9:57 pmLambert-St Louis

$701

British Airways

Nov 9

STL1:20 pmLambert-St Louis

14h 35m

2 stops

DUB9:55 amDublin

Nov 18

DUB10:30 amDublin

17h 45m

2 stops

STL10:15 pmLambert-St Louis

$719

British Airways

Nov 18

STL1:15 pmLambert-St Louis

14h 40m

2 stops

DUB9:55 amDublin

Nov 25

DUB9:00 amDublin

20h 35m

2 stops

STL11:35 pmLambert-St Louis

$720

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 2/15

5:00 am-8:10 am

1 stop21h 10m

Dublin

Thu 2/18

9:00 am-3:57 pm

2 stops36h 57m

$680

Quickest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sun 3/28

9:40 pm-2:30 pm

1 stop10h 50m

Dublin

Fri 4/2

12:50 pm-7:30 pm

1 stop12h 40m

$684

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 1/6

8:15 am-7:10 am

2 stops16h 55m

Dublin

Wed 1/13

5:10 am-1:45 pm

1 stop14h 35m

$684

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 1/6

9:22 am-7:10 am

2 stops15h 48m

Dublin

Fri 1/22

5:10 am-1:45 pm

1 stop14h 35m

$684

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 1/11

7:29 am-8:10 am

1 stop18h 41m

Dublin

Thu 1/14

9:00 am-12:15 pm

2 stops33h 15m

$685

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 1/6

3:40 pm-11:00 am

1 stop13h 20m

Dublin

Fri 1/22

5:10 am-1:45 pm

1 stop14h 35m

$687

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sun 3/28

6:45 pm-4:55 pm

2 stops16h 10m

Dublin

Fri 4/2

5:55 am-1:25 pm

1 stop13h 30m

$687

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 2/15

7:29 am-9:55 am

2 stops20h 26m

Dublin

Thu 2/18

8:40 pm-4:43 pm

2 stops26h 03m

$696

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 1/26

2:11 pm-9:40 am

2 stops13h 29m

Dublin

Fri 1/29

11:30 am-10:34 pm

2 stops17h 04m

$709

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/8

1:17 pm-8:40 am

1 stop13h 23m

Dublin

Tue 12/15

11:30 am-8:46 pm

1 stop15h 16m

$726

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 $423. 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 $498.

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 $740 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	$379
Fastest flight time	10h 05m
Direct flights	None

The best one-way flight to Ireland from St. Louis in the past 72 hours is $379. The best round-trip flight deal from St. Louis to Ireland found on momondo in the last 72 hours is $680.

The fastest flight from St. Louis to Ireland takes 10h 05m

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 October 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 1,811 reviews	Search Aer Lingus flights
British Airways	PriceFrom $429	Free Cancellation	Rating 6.7 8,243 reviews	Search British Airways flights
Lufthansa	PriceFrom $430	Free Cancellation	Rating 6.8 8,253 reviews	Search Lufthansa flights
Air Canada	PriceFrom $474	Free Cancellation	Rating 7.1 11,712 reviews	Search Air Canada flights
American Airlines	PriceFrom $482	Free Cancellation	Rating 7.0 12,128 reviews	Search American Airlines flights
Delta	PriceFrom $484	Free Cancellation	Rating 7.8 8,627 reviews	Search Delta flights
United Airlines	PriceFrom $489	Free Cancellation	Rating 7.4 10,280 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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Complete your trip

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Popular cities in Ireland

Flights to Dublinfrom $223

Flights to Shannon, Clarefrom $438

Flights to Corkfrom $521

Flights to Knockfrom $821

Flights to Milltown (Kerry)from $565

Flights to Donegalfrom $1,016

Cheap flights from St. Louis to Ireland from $379

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 12/31. 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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Delta flights from St. Louis to Ireland

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

British Airways flights from St. Louis to Ireland

Our best British Airways 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