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 39% 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, British Airways, and Aer Lingus 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 November 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.

$343 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

Cheap round-trip flights

Enter your travel dates to find the best prices.

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

31h 00m1 stop Chicago O'Hare Intl

9:00 am - 3:58 pmDUB Dublin-STL Lambert-St Louis

36h 58m2 stops Toronto Pearson Intl Newark

$690United Airlines

Mon, Feb 15 - Thu, Feb 18

1:25 pm - 7:45 amSTL Lambert-St Louis-DUB Dublin

12h 20m1 stop Montreal Pierre Elliott Trudeau Intl

9:50 am - 7:54 pmDUB Dublin-STL Lambert-St Louis

16h 04m1 stop Toronto Pearson Intl

$693Multiple Airlines

Wed, May 5 - Wed, May 19

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

17h 41m2 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

$693Multiple Airlines

Wed, Feb 10 - Wed, Feb 24

10:30 am - 8:10 amSTL Lambert-St Louis-DUB Dublin

15h 40m1 stop Chicago O'Hare Intl

8:00 am - 9:52 pmDUB Dublin-STL Lambert-St Louis

42h 52m2 stops Toronto Pearson Intl Denver Intl

$695United Airlines

Wed, Mar 10 - Thu, Mar 18

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

$700Lufthansa

Wed, Feb 10 - Wed, Feb 24

6:00 am - 6:10 amSTL Lambert-St Louis-DUB Dublin

19h 10m2 stops Chicago O'Hare Intl Toronto Pearson Intl

8:00 am - 9:13 pmDUB Dublin-STL Lambert-St Louis

42h 13m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$703Air Canada

Sun, Mar 21 - Fri, Mar 26

7:00 am - 6:10 amSTL Lambert-St Louis-DUB Dublin

18h 10m2 stops Chicago O'Hare Intl Toronto Pearson Intl

8:00 am - 9:13 pmDUB Dublin-STL Lambert-St Louis

42h 13m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$703Air Canada

Sun, Mar 21 - Thu, Mar 25

9:52 am - 11:00 amSTL Lambert-St Louis-DUB Dublin

19h 08m2 stops Newark Frankfurt am Main

5:10 am - 9:13 pmDUB Dublin-STL Lambert-St Louis

22h 03m2 stops Frankfurt am Main Chicago O'Hare Intl

$714Lufthansa

Wed, Feb 24 - Thu, Mar 4

2:21 pm - 9:55 amSTL Lambert-St Louis-DUB Dublin

13h 34m2 stops Chicago O'Hare Intl London Heathrow

11:30 am - 10:23 pmDUB Dublin-STL Lambert-St Louis

16h 53m2 stops Philadelphia Chicago O'Hare Intl

$720American Airlines

Mon, Feb 15 - Thu, Feb 18

5:51 pm - 2:05 pmSTL Lambert-St Louis-DUB Dublin

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

11:30 am - 8:29 pmDUB Dublin-STL Lambert-St Louis

14h 59m2 stops Philadelphia Chicago O'Hare Intl

$818American Airlines

Wed, Jan 27 - Sun, Feb 7

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Lufthansa flights from St. Louis to Ireland

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

Lufthansa

Feb 10

STL3:40 pmLambert-St Louis

13h 20m

1 stop

DUB11:00 amDublin

Feb 24

DUB5:10 amDublin

14h 35m

1 stop

STL1:45 pmLambert-St Louis

$700

Lufthansa

Feb 24

STL9:52 amLambert-St Louis

19h 08m

2 stops

DUB11:00 amDublin

Mar 4

DUB5:10 amDublin

22h 03m

2 stops

STL9:13 pmLambert-St Louis

$714

Air Canada flights from St. Louis to Ireland

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

Air Canada

Mar 21

STL6:00 amLambert-St Louis

19h 10m

2 stops

DUB6:10 amDublin

Mar 26

DUB8:00 amDublin

42h 13m

2 stops

STL9:13 pmLambert-St Louis

$703

Air Canada

Apr 6

STL7:30 amLambert-St Louis

18h 45m

2 stops

DUB8:15 amDublin

Apr 14

DUB9:50 amDublin

43h 04m

2 stops

STL10:54 pmLambert-St Louis

$707

Air Canada

Dec 8

STL6:55 pmLambert-St Louis

30h 15m

2 stops

DUB7:10 amDublin

Dec 15

DUB9:00 amDublin

35h 41m

2 stops

STL2:41 pmLambert-St Louis

$746

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

7:10 pm-8:10 am

1 stop31h 00m

Dublin

Thu 2/18

9:00 am-3:58 pm

2 stops36h 58m

$690

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 5/5

1:25 pm-7:45 am

1 stop12h 20m

Dublin

Wed 5/19

9:50 am-7:54 pm

1 stop16h 04m

$693

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 2/10

7:29 am-7:10 am

2 stops17h 41m

Dublin

Wed 2/24

5:10 am-1:45 pm

1 stop14h 35m

$693

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 3/10

10:30 am-8:10 am

1 stop15h 40m

Dublin

Thu 3/18

8:00 am-9:52 pm

2 stops42h 52m

$695

Quickest round-trip

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 2/24

5:10 am-1:45 pm

1 stop14h 35m

$700

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sun 3/21

6:00 am-6:10 am

2 stops19h 10m

Dublin

Fri 3/26

8:00 am-9:13 pm

2 stops42h 13m

$703

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sun 3/21

7:00 am-6:10 am

2 stops18h 10m

Dublin

Thu 3/25

8:00 am-9:13 pm

2 stops42h 13m

$703

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 2/24

9:52 am-11:00 am

2 stops19h 08m

Dublin

Thu 3/4

5:10 am-9:13 pm

2 stops22h 03m

$714

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 2/15

2:21 pm-9:55 am

2 stops13h 34m

Dublin

Thu 2/18

11:30 am-10:23 pm

2 stops16h 53m

$720

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 1/27

5:51 pm-2:05 pm

2 stops14h 14m

Dublin

Sun 2/7

11:30 am-8:29 pm

2 stops14h 59m

$818

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 February 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 $750 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	$343
Fastest flight time	10h 05m
Direct flights	None

The best one-way flight to Ireland from St. Louis in the past 72 hours is $343. The best round-trip flight deal from St. Louis to Ireland found on momondo in the last 72 hours is $690.

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 November 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 1,882 reviews	Search Aer Lingus flights
British Airways	PriceFrom $429	Free Cancellation	Rating 6.7 8,286 reviews	Search British Airways flights
Lufthansa	PriceFrom $430	Free Cancellation	Rating 6.8 8,290 reviews	Search Lufthansa flights
Air Canada	PriceFrom $474	Free Cancellation	Rating 7.1 11,880 reviews	Search Air Canada flights
American Airlines	PriceFrom $482	Free Cancellation	Rating 7.0 12,227 reviews	Search American Airlines flights
Delta	PriceFrom $484	Free Cancellation	Rating 7.8 8,700 reviews	Search Delta flights
United Airlines	PriceFrom $485	Free Cancellation	Rating 7.3 10,475 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 $321

Flights to Shannon, Clarefrom $603

Flights to Corkfrom $501

Flights to Knockfrom $692

Flights to Milltown (Kerry)from $770

Flights to Donegalfrom $1,004

Cheap flights from St. Louis to Ireland from $343

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 3/15. 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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Lufthansa flights from St. Louis to Ireland

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

Air Canada flights from St. Louis to Ireland

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

momondo Fare Finder

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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

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According to popular flight searches on momondo this year

Fly your favorite airline to Ireland

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List of cabin classes available on flights landing in Ireland. Availability may vary depending on flight origin and airline.

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Explore popular destinations other users love

According to popular flight searches on momondo this year