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

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 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.

$324 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

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:45 pm - 7:10 amSTL Lambert-St Louis-DUB Dublin

30h 25m2 stops Chicago O'Hare Intl Toronto Pearson Intl

11:45 am - 3:26 pmDUB Dublin-STL Lambert-St Louis

33h 41m2 stops Frankfurt am Main Toronto Pearson Intl

$683Multiple Airlines

Tue, Feb 2 - Tue, Feb 16

4:10 pm - 8:15 amSTL Lambert-St Louis-DUB Dublin

10h 05m1 stop Toronto Pearson Intl

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

13h 30m1 stop Frankfurt am Main

$688Multiple Airlines

Tue, Apr 6 - Tue, Apr 13

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

18h 50m1 stop Frankfurt am Main

5:10 am - 2:45 pmDUB Dublin-STL Lambert-St Louis

14h 35m1 stop Frankfurt am Main

$689Lufthansa

Wed, Mar 17 - Wed, Mar 24

7:04 pm - 8:10 amSTL Lambert-St Louis-DUB Dublin

32h 06m1 stop Chicago O'Hare Intl

8:00 am - 4:56 pmDUB Dublin-STL Lambert-St Louis

37h 56m2 stops Toronto Pearson Intl Newark

$690United Airlines

Sat, Mar 20 - Fri, Mar 26

7:04 pm - 8:10 amSTL Lambert-St Louis-DUB Dublin

32h 06m1 stop Chicago O'Hare Intl

8:00 am - 4:56 pmDUB Dublin-STL Lambert-St Louis

37h 56m2 stops Toronto Pearson Intl Newark

$690United Airlines

Mon, Mar 15 - Fri, Mar 26

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

$698Lufthansa

Wed, Feb 10 - Wed, Feb 17

10:30 am - 6:10 amSTL Lambert-St Louis-DUB Dublin

38h 40m2 stops Chicago O'Hare Intl Toronto Pearson Intl

8:00 am - 12:15 pmDUB Dublin-STL Lambert-St Louis

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

$703Air Canada

Mon, Mar 15 - Thu, Mar 25

6:45 pm - 7:10 amSTL Lambert-St Louis-DUB Dublin

30h 25m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:00 am - 9:23 pmDUB Dublin-STL Lambert-St Louis

42h 23m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$703Air Canada

Tue, Feb 2 - Thu, Feb 11

3:40 pm - 7:45 amSTL Lambert-St Louis-DUB Dublin

10h 05m1 stop Atlanta Hartsfield-Jackson

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

17h 09m2 stops Amsterdam Schiphol Minneapolis St Paul

$707KLM

Wed, Mar 3 - Tue, Mar 9

11:51 am - 7:45 amSTL Lambert-St Louis-DUB Dublin

14h 54m1 stop Atlanta Hartsfield-Jackson

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

16h 09m2 stops Amsterdam Schiphol Minneapolis St Paul

$707KLM

Tue, Mar 16 - Wed, Mar 24

Cheap last minute flights

Enter your travel dates to find the best prices.

5:38 pm - 8:10 amSTL Lambert-St Louis-DUB Dublin

32h 32m1 stop Chicago O'Hare Intl

9:00 am - 10:32 amDUB Dublin-STL Lambert-St Louis

31h 32m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$793United Airlines

Sun, Nov 1 - Thu, Nov 12

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

17h 40m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:00 am - 10:32 amDUB Dublin-STL Lambert-St Louis

31h 32m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$796Air Canada

Wed, Nov 4 - Thu, Nov 12

6:50 pm - 7:10 amSTL Lambert-St Louis-DUB Dublin

30h 20m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:00 am - 10:32 amDUB Dublin-STL Lambert-St Louis

31h 32m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$796Air Canada

Tue, Nov 3 - Thu, Nov 12

8:00 am - 10:20 amSTL Lambert-St Louis-DUB Dublin

20h 20m1 stop Washington, D.C. Dulles Intl

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

14h 35m1 stop Frankfurt am Main

$798Multiple Airlines

Wed, Nov 4 - Wed, Nov 11

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

21h 10m1 stop Chicago O'Hare Intl

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

14h 35m1 stop Frankfurt am Main

$799Multiple Airlines

Wed, Nov 4 - Wed, Nov 11

12:00 pm - 7:45 amSTL Lambert-St Louis-DUB Dublin

13h 45m1 stop Atlanta Hartsfield-Jackson

5:45 am - 4:31 pmDUB Dublin-STL Lambert-St Louis

16h 46m2 stops Amsterdam Schiphol Minneapolis St Paul

$800KLM

Wed, Nov 4 - Wed, Nov 11

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

18h 45m1 stop Atlanta Hartsfield-Jackson

1:25 pm - 11:56 pmDUB Dublin-STL Lambert-St Louis

16h 31m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$801KLM

Tue, Nov 3 - Fri, Nov 13

11:29 am - 9:55 amSTL Lambert-St Louis-DUB Dublin

16h 26m1 stop Newark

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

12h 26m1 stop Toronto Pearson Intl

$801United Airlines

Tue, Nov 3 - Thu, Nov 12

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

$802Lufthansa

Wed, Nov 4 - Fri, Nov 13

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

$802Lufthansa

Wed, Nov 4 - Wed, Nov 11

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Air Canada flights from St. Louis to Ireland

Our best Air Canada deals on St. Louis to Ireland flight tickets

Air Canada

Apr 4

STL4:10 pmLambert-St Louis

10h 05m

1 stop

DUB8:15 amDublin

Apr 16

DUB9:50 amDublin

32h 30m

2 stops

STL12:20 pmLambert-St Louis

$703

Air Canada

Apr 5

STL5:18 pmLambert-St Louis

32h 57m

2 stops

DUB8:15 amDublin

Apr 16

DUB9:50 amDublin

32h 30m

2 stops

STL12:20 pmLambert-St Louis

$707

Air Canada

Nov 11

STL8:30 amLambert-St Louis

16h 40m

2 stops

DUB7:10 amDublin

Nov 19

DUB9:00 amDublin

33h 10m

2 stops

STL12:10 pmLambert-St Louis

$796

Delta flights from St. Louis to Ireland

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

Delta

Feb 1

STL9:45 amLambert-St Louis

17h 00m

1 stop

DUB8:45 amDublin

Feb 10

DUB5:45 amDublin

23h 00m

2 stops

STL10:45 pmLambert-St Louis

$717

Delta

Feb 9

STL6:05 amLambert-St Louis

20h 40m

1 stop

DUB8:45 amDublin

Feb 19

DUB9:40 amDublin

14h 21m

1 stop

STL6:01 pmLambert-St Louis

$721

Delta

Feb 7

STL12:00 pmLambert-St Louis

14h 45m

2 stops

DUB8:45 amDublin

Feb 16

DUB8:50 amDublin

20h 28m

2 stops

STL11:18 pmLambert-St Louis

$722

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 2/2

6:45 pm-7:10 am

2 stops30h 25m

Dublin

Tue 2/16

11:45 am-3:26 pm

2 stops33h 41m

$683

Quickest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 4/6

4:10 pm-8:15 am

1 stop10h 05m

Dublin

Tue 4/13

5:55 am-1:25 pm

1 stop13h 30m

$688

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 3/17

4:40 pm-4:30 pm

1 stop18h 50m

Dublin

Wed 3/24

5:10 am-2:45 pm

1 stop14h 35m

$689

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sat 3/20

7:04 pm-8:10 am

1 stop32h 06m

Dublin

Fri 3/26

8:00 am-4:56 pm

2 stops37h 56m

$690

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 3/15

7:04 pm-8:10 am

1 stop32h 06m

Dublin

Fri 3/26

8:00 am-4:56 pm

2 stops37h 56m

$690

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 2/10

3:40 pm-11:00 am

1 stop13h 20m

Dublin

Wed 2/17

5:10 am-1:45 pm

1 stop14h 35m

$698

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 3/15

10:30 am-6:10 am

2 stops38h 40m

Dublin

Thu 3/25

8:00 am-12:15 pm

2 stops33h 15m

$703

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 2/2

6:45 pm-7:10 am

2 stops30h 25m

Dublin

Thu 2/11

9:00 am-9:23 pm

2 stops42h 23m

$703

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 3/3

3:40 pm-7:45 am

1 stop10h 05m

Dublin

Tue 3/9

5:45 am-4:54 pm

2 stops17h 09m

$707

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 3/16

11:51 am-7:45 am

1 stop14h 54m

Dublin

Wed 3/24

5:45 am-4:54 pm

2 stops16h 09m

$707

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 $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 $756 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 $482 on momondo.

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

You could potentially save up to 76% 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	$324
Fastest flight time	10h 05m
Direct flights	None

The best one-way flight to Ireland from St. Louis in the past 72 hours is $324. The best round-trip flight deal from St. Louis to Ireland found on momondo in the last 72 hours is $683.

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 1,868 reviews	Search Aer Lingus flights
British Airways	PriceFrom $429	Free Cancellation	Rating 6.7 8,275 reviews	Search British Airways flights
Lufthansa	PriceFrom $430	Free Cancellation	Rating 6.8 8,297 reviews	Search Lufthansa flights
Air Canada	PriceFrom $474	Free Cancellation	Rating 7.1 11,833 reviews	Search Air Canada flights
American Airlines	PriceFrom $482	Free Cancellation	Rating 7.0 12,210 reviews	Search American Airlines flights
Delta	PriceFrom $484	Free Cancellation	Rating 7.8 8,692 reviews	Search Delta flights
United Airlines	PriceFrom $489	Free Cancellation	Rating 7.3 10,451 reviews	Search United Airlines flights
KLM	PriceFrom $538	Free Cancellation	Rating 7.8 1,595 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 $388

Flights to Shannon, Clarefrom $550

Flights to Corkfrom $491

Flights to Knockfrom $803

Flights to Milltown (Kerry)from $574

Flights to Donegalfrom $855

Cheap flights from St. Louis to Ireland from $324

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 3/8. 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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Air Canada flights from St. Louis to Ireland

Our best Air Canada 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