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 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?

Aer Lingus, Lufthansa, 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 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.

$225 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.

4:05 pm - 5:10 amSTL Lambert-St Louis-DUB Dublin

31h 05m1 stop Toronto Pearson Intl

1:00 pm - 3:26 pmDUB Dublin-STL Lambert-St Louis

32h 26m1 stop Toronto Pearson Intl

$338Aer Lingus

Sat, Jan 9 - Tue, Jan 19

4:05 pm - 5:10 amSTL Lambert-St Louis-DUB Dublin

31h 05m1 stop Toronto Pearson Intl

1:00 pm - 3:26 pmDUB Dublin-STL Lambert-St Louis

32h 26m1 stop Toronto Pearson Intl

$338Aer Lingus

Sat, Jan 9 - Fri, Feb 12

1:08 pm - 8:10 amSTL Lambert-St Louis-DUB Dublin

13h 02m1 stop Chicago O'Hare Intl

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 8 - Tue, Dec 15

9:33 am - 8:30 amSTL Lambert-St Louis-DUB Dublin

16h 57m1 stop Philadelphia

11:30 am - 10:44 pmDUB Dublin-STL Lambert-St Louis

17h 14m1 stop Philadelphia

$685Iberia

Wed, Feb 3 - Wed, Feb 10

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

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

9:10 am - 7:40 pmDUB Dublin-STL Lambert-St Louis

16h 30m2 stops Frankfurt am Main Newark

$688Multiple Airlines

Sat, Jan 9 - Fri, Feb 12

11:45 am - 7:30 amSTL Lambert-St Louis-DUB Dublin

13h 45m1 stop Newark

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

12h 26m1 stop Toronto Pearson Intl

$692United Airlines

Tue, Dec 8 - 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

$692Air Canada

Tue, Dec 8 - Tue, Dec 15

6:50 pm - 5:10 pmSTL Lambert-St Louis-DUB Dublin

17h 20m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

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

14h 35m1 stop Frankfurt am Main

$700Lufthansa

Sun, Oct 25 - Fri, Nov 6

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

13h 35m1 stop Montreal Pierre Elliott Trudeau Intl

9:50 am - 8:00 pmDUB Dublin-STL Lambert-St Louis

16h 10m1 stop Toronto Pearson Intl

$702Air Canada

Mon, Sep 21 - Tue, Oct 6

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

$704Lufthansa

Sun, Oct 25 - Fri, Nov 6

Cheap last minute flights

Enter your travel dates to find the best prices.

8:55 am - 5:10 amSTL Lambert-St Louis-DUB Dublin

14h 15m1 stop Toronto Pearson Intl

1:20 pm - 2:02 pmDUB Dublin-STL Lambert-St Louis

30h 42m1 stop Toronto Pearson Intl

$414Aer Lingus

Tue, Aug 11 - Wed, Aug 19

8:55 am - 5:10 amSTL Lambert-St Louis-DUB Dublin

14h 15m1 stop Toronto Pearson Intl

1:20 pm - 2:02 pmDUB Dublin-STL Lambert-St Louis

30h 42m1 stop Toronto Pearson Intl

$414Aer Lingus

Tue, Aug 11 - Wed, Aug 19

3:30 pm - 4:50 pmSTL Lambert-St Louis-DUB Dublin

19h 20m1 stop Frankfurt am Main

5:55 am - 9:17 pmDUB Dublin-STL Lambert-St Louis

21h 22m2 stops Frankfurt am Main Chicago O'Hare Intl

$831Lufthansa

Tue, Aug 11 - Wed, Aug 19

3:30 pm - 11:35 amSTL Lambert-St Louis-DUB Dublin

14h 05m1 stop Frankfurt am Main

5:55 am - 9:17 pmDUB Dublin-STL Lambert-St Louis

21h 22m2 stops Frankfurt am Main Chicago O'Hare Intl

$841Lufthansa

Tue, Aug 11 - Wed, Aug 19

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

13h 35m1 stop Montreal Pierre Elliott Trudeau Intl

9:50 am - 12:02 pmDUB Dublin-STL Lambert-St Louis

32h 12m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$865United Airlines

Wed, Aug 12 - Thu, Aug 20

8:00 am - 7:45 amSTL Lambert-St Louis-DUB Dublin

17h 45m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

9:50 am - 12:02 pmDUB Dublin-STL Lambert-St Louis

32h 12m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$869United Airlines

Wed, Aug 12 - Thu, Aug 20

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

13h 35m1 stop Montreal Pierre Elliott Trudeau Intl

9:50 am - 6:42 pmDUB Dublin-STL Lambert-St Louis

14h 52m1 stop Montreal Pierre Elliott Trudeau Intl

$878Air Canada

Wed, Aug 12 - Thu, Aug 27

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

13h 35m1 stop Montreal Pierre Elliott Trudeau Intl

9:50 am - 6:42 pmDUB Dublin-STL Lambert-St Louis

14h 52m1 stop Montreal Pierre Elliott Trudeau Intl

$878Air Canada

Wed, Aug 12 - Tue, Aug 25

2:10 pm - 10:00 amSTL Lambert-St Louis-DUB Dublin

13h 50m1 stop Detroit Metropolitan Wayne County

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

17h 58m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$944Delta

Fri, Aug 14 - Fri, Aug 21

2:10 pm - 10:00 amSTL Lambert-St Louis-DUB Dublin

13h 50m1 stop Detroit Metropolitan Wayne County

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

17h 58m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$944Delta

Fri, Aug 14 - Fri, Aug 21

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Aer Lingus flights from St. Louis to Ireland

Our best Aer Lingus deals on St. Louis to Ireland flight tickets

Aer Lingus

Sep 7

STL8:55 amLambert-St Louis

14h 15m

1 stop

DUB5:10 amDublin

Sep 16

DUB1:20 pmDublin

30h 40m

1 stop

STL2:00 pmLambert-St Louis

$372

Aer Lingus

Sep 8

STL8:55 amLambert-St Louis

14h 15m

1 stop

DUB5:10 amDublin

Sep 15

DUB1:20 pmDublin

30h 40m

1 stop

STL2:00 pmLambert-St Louis

$381

Aer Lingus

Oct 28

STL4:05 pmLambert-St Louis

32h 05m

1 stop

DUB5:10 amDublin

Nov 19

DUB1:00 pmDublin

32h 26m

1 stop

STL3:26 pmLambert-St Louis

$388

Lufthansa flights from St. Louis to Ireland

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

Lufthansa

Oct 25

STL6:50 pmLambert-St Louis

17h 20m

2 stops

DUB5:10 pmDublin

Nov 6

DUB5:10 amDublin

14h 35m

1 stop

STL1:45 pmLambert-St Louis

$700

Lufthansa

Aug 11

STL3:30 pmLambert-St Louis

19h 20m

1 stop

DUB4:50 pmDublin

Aug 19

DUB5:55 amDublin

21h 22m

2 stops

STL9:17 pmLambert-St Louis

$831

Lufthansa

Aug 11

STL3:30 pmLambert-St Louis

14h 05m

1 stop

DUB11:35 amDublin

Aug 19

DUB5:55 amDublin

21h 22m

2 stops

STL9:17 pmLambert-St Louis

$841

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sat 1/9

4:05 pm-5:10 am

1 stop31h 05m

Dublin

Tue 1/19

1:00 pm-3:26 pm

1 stop32h 26m

$338

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sat 1/9

4:05 pm-5:10 am

1 stop31h 05m

Dublin

Fri 2/12

1:00 pm-3:26 pm

1 stop32h 26m

$338

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/8

1:08 pm-8:10 am

1 stop13h 02m

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

Wed 2/3

9:33 am-8:30 am

1 stop16h 57m

Dublin

Wed 2/10

11:30 am-10:44 pm

1 stop17h 14m

$685

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sat 1/9

7:04 pm-7:10 am

2 stops30h 06m

Dublin

Fri 2/12

9:10 am-7:40 pm

2 stops16h 30m

$688

Quickest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 12/8

11:45 am-7:30 am

1 stop13h 45m

Dublin

Tue 12/15

9:00 am-3:26 pm

1 stop12h 26m

$692

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

$692

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sun 10/25

6:50 pm-5:10 pm

2 stops17h 20m

Dublin

Fri 11/6

5:10 am-1:45 pm

1 stop14h 35m

$700

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 9/21

12:10 pm-7:45 am

1 stop13h 35m

Dublin

Tue 10/6

9:50 am-8:00 pm

1 stop16h 10m

$702

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

$704

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 $434. 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 $504.

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 $710 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 $581 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

Fastest flight time	11h 25m
Direct flights	None

The fastest flight from St. Louis to Ireland takes 11h 25m

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 1,693 reviews	Search Aer Lingus flights
British Airways	PriceFrom $429	Free Cancellation	Rating 6.7 8,155 reviews	Search British Airways flights
Lufthansa	PriceFrom $430	Free Cancellation	Rating 6.8 8,176 reviews	Search Lufthansa flights
American Airlines	PriceFrom $482	Free Cancellation	Rating 7.1 11,904 reviews	Search American Airlines flights
Delta	PriceFrom $484	Free Cancellation	Rating 7.8 8,505 reviews	Search Delta flights
United Airlines	PriceFrom $487	Free Cancellation	Rating 7.4 10,101 reviews	Search United Airlines flights
Air Canada	PriceFrom $523	Free Cancellation	Rating 7.1 11,462 reviews	Search Air Canada flights
KLM	PriceFrom $532	Free Cancellation	Rating 7.8 1,555 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 $338

Flights to Shannon, Clarefrom $620

Flights to Corkfrom $672

Flights to Knockfrom $842

Flights to Milltown (Kerry)from $786

Flights to Donegalfrom $848

Cheap flights from St. Louis to Ireland from $225

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 9/22. 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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Aer Lingus flights from St. Louis to Ireland

Our best Aer Lingus 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

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