What is the cheapest airline that flies from Ireland to Lambert-St Louis?

Aer Lingus is the most popular carrier operating from Ireland to Lambert-St Louis

When did momondo last update prices for flights from Ireland to Lambert-St Louis Airport?

Prices for flights from Ireland to Lambert-St Louis Airport were last updated today.

How old do you have to be to fly from Ireland to Lambert-St Louis Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ireland to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The travel and health documents required for your trip to Lambert-St Louis Airport 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 Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$341 Cheap Flights from Ireland to St. Louis in 2026

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Find the cheapest flights from Ireland to St. Louis

Round-trip

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Recent round-trip flight deals from Ireland to St. Louis

Enter your travel dates to find the best prices.

9:30 am - 7:30 pm

DUB

STL

16h 00m

1 stop

12:27 pm - 9:45 am

STL

DUB

15h 18m

1 stop

$856Finnair

Wed, May 6 - Wed, May 20

9:30 am - 7:30 pm

DUB

STL

16h 00m

1 stop

12:27 pm - 9:45 am

STL

DUB

15h 18m

1 stop

$857Finnair

Wed, May 6 - Wed, May 20

11:30 am - 9:15 pm

DUB

STL

15h 45m

2 stops

9:33 am - 8:40 am

STL

DUB

17h 07m

1 stop

$874Multiple Airlines

Fri, Jan 30 - Tue, Feb 3

11:30 am - 10:52 pm

DUB

STL

17h 22m

1 stop

2:21 pm - 5:00 pm

STL

DUB

20h 39m

2 stops

$875American Airlines

Fri, Feb 27 - Tue, Mar 3

11:30 am - 10:52 pm

DUB

STL

17h 22m

1 stop

2:21 pm - 5:00 pm

STL

DUB

20h 39m

2 stops

$876American Airlines

Fri, Feb 27 - Tue, Mar 3

9:30 am - 7:30 pm

DUB

STL

16h 00m

1 stop

12:27 pm - 9:45 am

STL

DUB

15h 18m

1 stop

$881Finnair

Wed, May 6 - Wed, May 20

11:30 am - 11:04 pm

DUB

STL

17h 34m

1 stop

2:00 pm - 8:40 am

STL

DUB

13h 40m

1 stop

$883Iberia

Sun, Mar 1 - Sun, Mar 8

11:30 am - 11:04 pm

DUB

STL

17h 34m

1 stop

2:00 pm - 8:40 am

STL

DUB

13h 40m

1 stop

$884Iberia

Sun, Mar 1 - Sun, Mar 8

11:30 am - 9:51 pm

DUB

STL

16h 21m

2 stops

3:20 pm - 8:40 am

STL

DUB

11h 20m

2 stops

$886American Airlines

Fri, Jan 30 - Tue, Feb 3

10:45 am - 9:12 pm

DUB

STL

16h 27m

2 stops

2:00 pm - 8:40 am

STL

DUB

13h 40m

1 stop

$891Multiple Airlines

Sun, Mar 1 - Sun, Mar 8

Finnair flights from Ireland to St. Louis

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

Finnair

May 6

DUB9:30 amDublin

16h 00m

1 stop

STL7:30 pmLambert-St Louis

May 20

STL12:27 pmLambert-St Louis

15h 18m

1 stop

DUB9:45 amDublin

$856

Finnair

May 6

DUB9:30 amDublin

16h 00m

1 stop

STL7:30 pmLambert-St Louis

May 20

STL12:27 pmLambert-St Louis

15h 18m

1 stop

DUB9:45 amDublin

$857

Finnair

May 6

DUB9:40 amDublin

18h 34m

2 stops

STL10:14 pmLambert-St Louis

May 20

STL12:27 pmLambert-St Louis

15h 18m

1 stop

DUB9:45 amDublin

$932

American Airlines flights from Ireland to St. Louis

Our best American Airlines deals on Ireland to St. Louis flight tickets

American Airlines

Feb 27

DUB11:30 amDublin

17h 22m

1 stop

STL10:52 pmLambert-St Louis

Mar 3

STL2:21 pmLambert-St Louis

20h 39m

2 stops

DUB5:00 pmDublin

$875

American Airlines

Feb 27

DUB11:30 amDublin

17h 22m

1 stop

STL10:52 pmLambert-St Louis

Mar 3

STL2:21 pmLambert-St Louis

20h 39m

2 stops

DUB5:00 pmDublin

$876

American Airlines

Jan 22

DUB11:30 amDublin

16h 21m

2 stops

STL9:51 pmLambert-St Louis

Feb 4

STL3:20 pmLambert-St Louis

11h 20m

2 stops

DUB8:40 amDublin

$884

Fly from

Fly to

Route

Depart

Return

Price

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 5/6

9:30 am-7:30 pm

1 stop16h 00m

Lambert-St Louis

Wed 5/20

12:27 pm-9:45 am

1 stop15h 18m

$856

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 5/6

9:30 am-7:30 pm

1 stop16h 00m

Lambert-St Louis

Wed 5/20

12:27 pm-9:45 am

1 stop15h 18m

$857

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 1/30

11:30 am-9:15 pm

2 stops15h 45m

Lambert-St Louis

Tue 2/3

9:33 am-8:40 am

1 stop17h 07m

$874

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 2/27

11:30 am-10:52 pm

1 stop17h 22m

Lambert-St Louis

Tue 3/3

2:21 pm-5:00 pm

2 stops20h 39m

$875

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 2/27

11:30 am-10:52 pm

1 stop17h 22m

Lambert-St Louis

Tue 3/3

2:21 pm-5:00 pm

2 stops20h 39m

$876

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 5/6

9:30 am-7:30 pm

1 stop16h 00m

Lambert-St Louis

Wed 5/20

12:27 pm-9:45 am

1 stop15h 18m

$881

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 3/1

11:30 am-11:04 pm

1 stop17h 34m

Lambert-St Louis

Sun 3/8

2:00 pm-8:40 am

1 stop13h 40m

$883

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 3/1

11:30 am-11:04 pm

1 stop17h 34m

Lambert-St Louis

Sun 3/8

2:00 pm-8:40 am

1 stop13h 40m

$884

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 1/30

11:30 am-9:51 pm

2 stops16h 21m

Lambert-St Louis

Tue 2/3

3:20 pm-8:40 am

2 stops11h 20m

$886

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 3/1

10:45 am-9:12 pm

2 stops16h 27m

Lambert-St Louis

Sun 3/8

2:00 pm-8:40 am

1 stop13h 40m

$891

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 Ireland to St. Louis

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 St. Louis?

In general, August is the cheapest month to fly from Ireland to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $821. The month of November is another great option to travel to St. Louis, with average flight prices from Ireland averaging around $848.

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

You could potentially save up to 41% on your flight if you consider stops on a Ireland to St. Louis flight.

Cheap Ireland to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to St. Louis

Fastest flight time	16h 00m
Direct flights	None

The fastest flight from Ireland to St. Louis takes 16h 00m

There are no direct flights from Ireland to St. Louis. There are no popular flight routes from Ireland to St. Louis.

Search flight deals

When did momondo last update prices for flights from Ireland to Lambert-St Louis Airport?
Prices for flights from Ireland to Lambert-St Louis Airport were last updated today.
How old do you have to be to fly from Ireland to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ireland to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport 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 Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

St. Charles

Chesterfield

Hermann

Fairview Heights

Florissant

Maryland Heights

O'Fallon

Fenton

Collinsville

St. Peters

Wentzville

Alton

Farmington

Clayton

Eureka

Edwardsville

Festus

Glencoe

Litchfield

Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to St. Louis?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ireland to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ireland to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from Ireland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ireland to St. Louis?

Once you have performed a search for Ireland to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ireland to St. Louis right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ireland to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.