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 KLM 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.

$361 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

12:10 pm - 3:26 pmDUB Dublin-STL Lambert-St Louis

57h 16m2 stops Zurich Toronto Pearson Intl

$683Multiple Airlines

Tue, Feb 2 - Tue, Feb 9

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

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

$686Lufthansa

Mon, Apr 19 - Fri, Apr 23

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

$689Lufthansa

Wed, Feb 3 - Wed, Feb 10

6:00 am - 8:10 amSTL Lambert-St Louis-DUB Dublin

21h 10m1 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

Tue, Mar 16 - Fri, Mar 26

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

21h 10m1 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

Wed, Feb 24 - Tue, Mar 2

9:35 pm - 2:35 pmSTL Lambert-St Louis-DUB Dublin

11h 00m1 stop London Heathrow

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

12h 40m1 stop London Heathrow

$694British Airways

Tue, Apr 13 - Wed, Apr 21

6:15 am - 7:10 amSTL Lambert-St Louis-DUB Dublin

18h 55m2 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

$703Air Canada

Sun, Feb 14 - Fri, Feb 26

5:00 am - 7:10 amSTL Lambert-St Louis-DUB Dublin

20h 10m2 stops Chicago O'Hare Intl Toronto Pearson Intl

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

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

$703Air Canada

Mon, Mar 1 - Thu, Mar 11

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

10h 50m1 stop London Heathrow

8:35 am - 7:30 pmDUB Dublin-STL Lambert-St Louis

16h 55m1 stop London Heathrow

$706British Airways

Sun, Apr 18 - Thu, Apr 22

Cheap last minute flights

Enter your travel dates to find the best prices.

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

$787Lufthansa

Wed, Oct 28 - Wed, Nov 4

6:09 am - 7:30 amSTL Lambert-St Louis-DUB Dublin

20h 21m1 stop Newark

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

14h 35m1 stop Frankfurt am Main

$794Multiple Airlines

Wed, Oct 28 - Wed, Nov 4

10:53 am - 6:10 amSTL Lambert-St Louis-DUB Dublin

14h 17m2 stops Chicago O'Hare Intl Toronto Pearson Intl

9:00 am - 3:43 pmDUB Dublin-STL Lambert-St Louis

36h 43m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$796Air Canada

Wed, Oct 28 - Thu, Nov 5

4:40 pm - 11:00 amSTL Lambert-St Louis-DUB Dublin

13h 20m1 stop Frankfurt am Main

5:10 am - 11:24 pmDUB Dublin-STL Lambert-St Louis

24h 14m2 stops Frankfurt am Main Chicago O'Hare Intl

$797Lufthansa

Wed, Oct 28 - Wed, Nov 4

10:53 am - 10:20 amSTL Lambert-St Louis-DUB Dublin

18h 27m2 stops Chicago O'Hare Intl Washington, D.C. Reagan-National

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

14h 35m1 stop Frankfurt am Main

$798Multiple Airlines

Wed, Oct 28 - Wed, Nov 4

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

13h 02m1 stop Chicago O'Hare Intl

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

12h 26m1 stop Toronto Pearson Intl

$801United Airlines

Mon, Nov 2 - Thu, Nov 12

3:15 pm - 8:10 amSTL Lambert-St Louis-DUB Dublin

11h 55m1 stop Chicago O'Hare Intl

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

12h 26m1 stop Toronto Pearson Intl

$801United Airlines

Wed, Oct 28 - Thu, Nov 5

7:20 pm - 2:30 pmSTL Lambert-St Louis-DUB Dublin

14h 10m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

8:50 am - 8:51 pmDUB Dublin-STL Lambert-St Louis

18h 01m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$805Delta

Wed, Oct 28 - Wed, Nov 4

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

13h 45m1 stop Atlanta Hartsfield-Jackson

10:45 am - 8:30 pmDUB Dublin-STL Lambert-St Louis

15h 45m1 stop New York John F Kennedy Intl

$814Delta

Mon, Nov 2 - Wed, Nov 11

10:53 am - 6:10 amSTL Lambert-St Louis-DUB Dublin

14h 17m2 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

$846Air Canada

Wed, Oct 28 - Sat, Nov 7

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

KLM flights from St. Louis to Ireland

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

KLM

Feb 16

STL11:51 amLambert-St Louis

14h 54m

2 stops

DUB8:45 amDublin

Feb 24

DUB5:45 amDublin

17h 05m

2 stops

STL4:50 pmLambert-St Louis

$722

KLM

Nov 9

STL2:31 pmLambert-St Louis

11h 14m

1 stop

DUB7:45 amDublin

Nov 17

DUB9:40 amDublin

14h 33m

1 stop

STL6:13 pmLambert-St Louis

$804

KLM

Nov 9

STL2:31 pmLambert-St Louis

12h 14m

2 stops

DUB8:45 amDublin

Nov 17

DUB5:45 amDublin

16h 58m

2 stops

STL4:43 pmLambert-St Louis

$805

Delta flights from St. Louis to Ireland

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

Delta

Feb 7

STL1:01 pmLambert-St Louis

13h 44m

1 stop

DUB8:45 amDublin

Feb 17

DUB9:40 amDublin

17h 09m

1 stop

STL8:49 pmLambert-St Louis

$711

Delta

Feb 7

STL1:01 pmLambert-St Louis

13h 44m

1 stop

DUB8:45 amDublin

Feb 18

DUB6:00 amDublin

20h 51m

2 stops

STL8:51 pmLambert-St Louis

$715

Delta

Feb 7

STL10:00 amLambert-St Louis

17h 00m

2 stops

DUB9:00 amDublin

Feb 16

DUB10:45 amDublin

16h 06m

1 stop

STL8:51 pmLambert-St Louis

$716

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 2/9

12:10 pm-3:26 pm

2 stops57h 16m

$683

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

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 4/19

6:45 pm-4:55 pm

2 stops16h 10m

Dublin

Fri 4/23

5:55 am-1:25 pm

1 stop13h 30m

$686

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Wed 2/3

3:40 pm-11:00 am

1 stop13h 20m

Dublin

Wed 2/10

5:10 am-1:45 pm

1 stop14h 35m

$689

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 3/16

6:00 am-8:10 am

1 stop21h 10m

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 2/24

5:00 am-8:10 am

1 stop21h 10m

Dublin

Tue 3/2

9:00 am-3:58 pm

2 stops36h 58m

$690

Quickest round-trip

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Tue 4/13

9:35 pm-2:35 pm

1 stop11h 00m

Dublin

Wed 4/21

12:50 pm-7:30 pm

1 stop12h 40m

$694

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sun 2/14

6:15 am-7:10 am

2 stops18h 55m

Dublin

Fri 2/26

9:00 am-12:06 pm

2 stops33h 06m

$703

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Mon 3/1

5:00 am-7:10 am

2 stops20h 10m

Dublin

Thu 3/11

9:00 am-12:15 pm

2 stops33h 15m

$703

St. LouisDublin

STL Lambert-St Louis - DUB Dublin

STLDUB

Lambert-St Louis

Sun 4/18

9:40 pm-2:30 pm

1 stop10h 50m

Dublin

Thu 4/22

8:35 am-7:30 pm

1 stop16h 55m

$706

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	$361
Fastest flight time	10h 05m
Direct flights	None

The best one-way flight to Ireland from St. Louis in the past 72 hours is $361. 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 1,862 reviews	Search Aer Lingus flights
British Airways	PriceFrom $429	Free Cancellation	Rating 6.7 8,274 reviews	Search British Airways flights
Lufthansa	PriceFrom $430	Free Cancellation	Rating 6.8 8,295 reviews	Search Lufthansa flights
Air Canada	PriceFrom $474	Free Cancellation	Rating 7.1 11,819 reviews	Search Air Canada flights
American Airlines	PriceFrom $482	Free Cancellation	Rating 7.0 12,191 reviews	Search American Airlines flights
Delta	PriceFrom $484	Free Cancellation	Rating 7.8 8,683 reviews	Search Delta flights
United Airlines	PriceFrom $489	Free Cancellation	Rating 7.3 10,443 reviews	Search United Airlines flights
KLM	PriceFrom $538	Free Cancellation	Rating 7.8 1,597 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.

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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Thu 11/26

Thu 12/3

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland

Popular cities

Other flights from St. Louis

Other flights to Ireland

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Ireland

Flights to Dublinfrom $364

Flights to Shannon, Clarefrom $449

Flights to Corkfrom $488

Flights to Knockfrom $700

Flights to Milltown (Kerry)from $557

Flights to Donegalfrom $1,030

Cheap flights from St. Louis to Ireland from $361

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 11/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from St. Louis to Ireland

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

KLM flights from St. Louis to Ireland

Our best KLM 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