What airlines fly to Ireland?

United Airlines, Aer Lingus and American Airlines are the top three most popular airlines that fly to Ireland from St. Louis according to our data. United Airlines 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?

British Airways, Air Canada, and United Airlines 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.

$251 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.

6:30 am - 7:30 amSTL Lambert-St Louis-DUB Dublin

19h 00m1 stop Newark

9:00 am - 12:06 pmDUB Dublin-STL Lambert-St Louis

33h 06m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$679United Airlines

Tue, Dec 1 - Tue, Dec 15

9:37 am - 8:10 amSTL Lambert-St Louis-DUB Dublin

16h 33m1 stop Chicago O'Hare Intl

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 1 - Tue, Dec 15

4:05 pm - 11:20 amSTL Lambert-St Louis-DUB Dublin

37h 15m2 stops Toronto Pearson Intl Zurich

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

12h 26m1 stop Toronto Pearson Intl

$683Multiple Airlines

Mon, Dec 7 - Thu, Dec 17

10:21 am - 7:15 amSTL Lambert-St Louis-DUB Dublin

14h 54m1 stop Dallas/Fort Worth

1:00 pm - 8:17 pmDUB Dublin-STL Lambert-St Louis

13h 17m1 stop Dallas/Fort Worth

$685Iberia

Wed, Nov 18 - Wed, Nov 25

7:04 pm - 7:10 amSTL Lambert-St Louis-DUB Dublin

30h 06m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:00 am - 12:06 pmDUB Dublin-STL Lambert-St Louis

33h 06m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$687Air Canada

Tue, Dec 1 - Tue, Dec 15

7:04 pm - 7:10 amSTL Lambert-St Louis-DUB Dublin

30h 06m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:00 am - 12:06 pmDUB Dublin-STL Lambert-St Louis

33h 06m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$687Air Canada

Tue, Dec 8 - Tue, Dec 15

11:29 am - 11:00 amSTL Lambert-St Louis-DUB Dublin

17h 31m2 stops Newark Frankfurt am Main

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

14h 35m1 stop Frankfurt am Main

$689Lufthansa

Wed, Nov 18 - Wed, Nov 25

11:51 am - 8:45 amSTL Lambert-St Louis-DUB Dublin

14h 54m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

5:45 am - 4:54 pmDUB Dublin-STL Lambert-St Louis

17h 09m2 stops Amsterdam Schiphol Minneapolis St Paul

$699KLM

Tue, Feb 2 - Fri, Feb 12

11:51 am - 8:45 amSTL Lambert-St Louis-DUB Dublin

14h 54m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

1:25 pm - 11:39 pmDUB Dublin-STL Lambert-St Louis

16h 14m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$699KLM

Wed, Feb 3 - Thu, Feb 11

11:29 am - 11:00 amSTL Lambert-St Louis-DUB Dublin

17h 31m2 stops Newark Frankfurt am Main

5:10 am - 10:24 pmDUB Dublin-STL Lambert-St Louis

23h 14m2 stops Frankfurt am Main Chicago O'Hare Intl

$702Lufthansa

Wed, Nov 18 - Wed, Nov 25

Cheap last minute flights

Enter your travel dates to find the best prices.

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

17h 20m1 stop Toronto Pearson Intl

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

13h 20m1 stop Frankfurt am Main

$1,071Multiple Airlines

Thu, Aug 27 - Mon, Sep 7

8:40 am - 11:10 amSTL Lambert-St Louis-DUB Dublin

20h 30m2 stops Washington, D.C. Dulles Intl Newark

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

13h 20m1 stop Frankfurt am Main

$1,092Multiple Airlines

Thu, Aug 27 - Mon, Sep 7

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

13h 35m1 stop Montreal Pierre Elliott Trudeau Intl

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

10h 42m1 stop Toronto Pearson Intl

$1,107Air Canada

Wed, Aug 26 - Fri, Aug 28

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

13h 35m1 stop Montreal Pierre Elliott Trudeau Intl

9:20 am - 11:40 pmDUB Dublin-STL Lambert-St Louis

44h 20m2 stops Toronto Pearson Intl Denver Intl

$1,126United Airlines

Wed, Aug 26 - Fri, Aug 28

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

17h 20m1 stop Toronto Pearson Intl

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

10h 42m1 stop Toronto Pearson Intl

$1,139Multiple Airlines

Wed, Aug 26 - Fri, Aug 28

9:15 am - 8:45 amSTL Lambert-St Louis-DUB Dublin

17h 30m1 stop Atlanta Hartsfield-Jackson

8:55 am - 11:26 pmDUB Dublin-STL Lambert-St Louis

20h 31m2 stops Amsterdam Schiphol Minneapolis St Paul

$1,151Delta

Wed, Aug 26 - Fri, Aug 28

6:30 am - 7:55 amSTL Lambert-St Louis-DUB Dublin

19h 25m2 stops Detroit Metropolitan Wayne County Minneapolis St Paul

8:55 am - 11:26 pmDUB Dublin-STL Lambert-St Louis

20h 31m2 stops Amsterdam Schiphol Minneapolis St Paul

$1,155Delta

Wed, Aug 26 - Fri, Aug 28

8:07 pm - 6:20 pmSTL Lambert-St Louis-DUB Dublin

16h 13m2 stops Chicago O'Hare Intl London Heathrow

7:00 pm - 10:55 pmDUB Dublin-STL Lambert-St Louis

33h 55m2 stops London Heathrow Charlotte Douglas

$1,258British Airways

Thu, Aug 27 - Mon, Sep 7

10:22 am - 10:15 amSTL Lambert-St Louis-DUB Dublin

17h 53m2 stops Charlotte Douglas London Heathrow

8:40 am - 10:55 pmDUB Dublin-STL Lambert-St Louis

20h 15m2 stops London Heathrow Charlotte Douglas

$8,467British Airways

Tue, Aug 25 - Tue, Sep 1

4:54 pm - 2:50 pmSTL Lambert-St Louis-DUB Dublin

15h 56m2 stops Chicago O'Hare Intl London Heathrow

7:00 pm - 10:55 pmDUB Dublin-STL Lambert-St Louis

33h 55m2 stops London Heathrow Charlotte Douglas

$8,681British Airways

Tue, Aug 25 - Mon, Aug 31

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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

STL7:00 pmLambert-St Louis

31h 10m

1 stop

DUB8:10 amDublin

Dec 15

DUB9:00 amDublin

31h 10m

2 stops

STL10:10 amLambert-St Louis

$679

United Airlines

Jan 11

STL5:34 pmLambert-St Louis

32h 36m

1 stop

DUB8:10 amDublin

Jan 21

DUB9:00 amDublin

32h 09m

3 stops

STL11:09 amLambert-St Louis

$680

United Airlines

Jan 30

STL5:34 pmLambert-St Louis

32h 36m

1 stop

DUB8:10 amDublin

Feb 11

DUB9:00 amDublin

43h 06m

2 stops

STL10:06 pmLambert-St Louis

$684

Lufthansa flights from St. Louis to Ireland

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

Lufthansa

Nov 9

STL1:08 pmLambert-St Louis

21h 22m

2 stops

DUB4:30 pmDublin

Nov 18

DUB9:10 amDublin

18h 42m

2 stops

STL9:52 pmLambert-St Louis

$746

Lufthansa

Sep 7

STL3:30 pmLambert-St Louis

14h 10m

1 stop

DUB11:40 amDublin

Sep 14

DUB5:35 pmDublin

25h 50m

1 stop

STL1:25 pmLambert-St Louis

$863

Lufthansa

Sep 7

STL6:53 pmLambert-St Louis

16h 02m

2 stops

DUB4:55 pmDublin

Sep 14

DUB6:05 amDublin

21h 31m

2 stops

STL9:36 pmLambert-St Louis

$929

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/1

6:30 am-7:30 am

1 stop19h 00m

Dublin

Tue 12/15

9:00 am-12:06 pm

2 stops33h 06m

$679

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/1

9:37 am-8:10 am

1 stop16h 33m

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

Mon 12/7

4:05 pm-11:20 am

2 stops37h 15m

Dublin

Thu 12/17

9:00 am-3:26 pm

1 stop12h 26m

$683

Quickest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 11/18

10:21 am-7:15 am

1 stop14h 54m

Dublin

Wed 11/25

1:00 pm-8:17 pm

1 stop13h 17m

$685

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/1

7:04 pm-7:10 am

2 stops30h 06m

Dublin

Tue 12/15

9:00 am-12:06 pm

2 stops33h 06m

$687

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/8

7:04 pm-7:10 am

2 stops30h 06m

Dublin

Tue 12/15

9:00 am-12:06 pm

2 stops33h 06m

$687

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 11/18

11:29 am-11:00 am

2 stops17h 31m

Dublin

Wed 11/25

5:10 am-1:45 pm

1 stop14h 35m

$689

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 2/2

11:51 am-8:45 am

2 stops14h 54m

Dublin

Fri 2/12

5:45 am-4:54 pm

2 stops17h 09m

$699

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 2/3

11:51 am-8:45 am

2 stops14h 54m

Dublin

Thu 2/11

1:25 pm-11:39 pm

2 stops16h 14m

$699

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 11/18

11:29 am-11:00 am

2 stops17h 31m

Dublin

Wed 11/25

5:10 am-10:24 pm

2 stops23h 14m

$702

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 $442. 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 $703 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.

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	$251
Fastest flight time	9h 58m
Direct flights	None

The best one-way flight to Ireland from St. Louis in the past 72 hours is $251. The best round-trip flight deal from St. Louis to Ireland found on momondo in the last 72 hours is $679.

The fastest flight from St. Louis to Ireland takes 9h 58m

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 1,723 reviews	Search Aer Lingus flights
British Airways	PriceFrom $429	Free Cancellation	Rating 6.7 8,188 reviews	Search British Airways flights
Lufthansa	PriceFrom $430	Free Cancellation	Rating 6.8 8,217 reviews	Search Lufthansa flights
Air Canada	PriceFrom $474	Free Cancellation	Rating 7.1 11,529 reviews	Search Air Canada flights
American Airlines	PriceFrom $482	Free Cancellation	Rating 7.1 11,988 reviews	Search American Airlines flights
Delta	PriceFrom $484	Free Cancellation	Rating 7.8 8,529 reviews	Search Delta flights
United Airlines	PriceFrom $489	Free Cancellation	Rating 7.4 10,121 reviews	Search United Airlines flights
KLM	PriceFrom $532	Free Cancellation	Rating 7.8 1,565 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 $365

Flights to Shannon, Clarefrom $476

Flights to Corkfrom $522

Flights to Knockfrom $482

Flights to Milltown (Kerry)from $517

Flights to Donegalfrom $909

Cheap flights from St. Louis to Ireland from $251

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 10/19. 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

Lufthansa flights from St. Louis to Ireland

Our best Lufthansa 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?

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