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Cheap flights from Ireland to St. Louis from $483

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to St. Louis departing on 5/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Find the cheapest flights from Ireland to St. Louis

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

Enter your travel dates to find the best prices.
Finnair Logo
9:30 am - 10:19 pm
DUB
-
STL
18h 49m
1 stop
Finnair Logo
5:00 pm - 11:50 am
STL
-
DUB
12h 50m
1 stop
$956Finnair
Sat, May 9 - Sun, May 24
Finnair Logo
9:30 am - 10:19 pm
DUB
-
STL
18h 49m
1 stop
Finnair Logo
5:00 pm - 11:50 am
STL
-
DUB
12h 50m
1 stop
$958Finnair
Sat, May 9 - Sun, May 24
Finnair Logo
9:30 am - 10:19 pm
DUB
-
STL
18h 49m
1 stop
Finnair Logo
5:00 pm - 11:50 am
STL
-
DUB
12h 50m
1 stop
$959Finnair
Sat, May 9 - Sun, May 24
Finnair Logo
9:30 am - 11:56 pm
DUB
-
STL
20h 26m
1 stop
Finnair Logo
5:00 pm - 11:50 am
STL
-
DUB
12h 50m
1 stop
$960Finnair
Sun, Jun 7 - Sun, Jun 14
Finnair Logo
9:30 am - 11:56 pm
DUB
-
STL
20h 26m
1 stop
Finnair Logo
5:00 pm - 11:50 am
STL
-
DUB
12h 50m
1 stop
$979Finnair
Tue, Jun 9 - Tue, Jun 16
Scandinavian Airlines Logo
7:05 pm - 8:50 pm
DUB
-
STL
31h 45m
2 stops
Scandinavian Airlines Logo
3:42 pm - 6:20 pm
STL
-
DUB
20h 38m
2 stops
$996Scandinavian Airlines
Thu, Aug 20 - Mon, Sep 14
Multiple Airlines Logo
7:25 pm - 12:14 am
DUB
-
STL
34h 49m
2 stops
Multiple Airlines Logo
4:29 pm - 10:35 am
STL
-
DUB
12h 06m
1 stop
$1,023Multiple Airlines
Tue, Aug 18 - Sun, Sep 13
Iberia Logo
9:30 am - 10:59 pm
DUB
-
STL
19h 29m
1 stop
Iberia Logo
2:33 pm - 11:50 am
STL
-
DUB
15h 17m
1 stop
$1,024Iberia
Wed, May 6 - Thu, Jun 4
American Airlines Logo
12:40 pm - 11:27 am
DUB
-
STL
28h 47m
1 stop
American Airlines Logo
7:20 pm - 9:45 am
STL
-
DUB
32h 25m
1 stop
$1,025American Airlines
Sat, May 9 - Sun, May 24
Finnair Logo
9:30 am - 11:56 pm
DUB
-
STL
20h 26m
1 stop
Finnair Logo
5:14 pm - 11:50 am
STL
-
DUB
12h 36m
1 stop
$1,026Finnair
Sat, Jun 6 - Sat, Jun 13

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American Airlines flights from Ireland to St. Louis

Our best American Airlines deals on Ireland to St. Louis flight tickets
American Airlines
May 9
DUB12:40 pmDublin
28h 47m
1 stop
STL11:27 amLambert-St Louis
May 24
STL7:20 pmLambert-St Louis
32h 25m
1 stop
DUB9:45 amDublin
$1,025
American Airlines
May 6
DUB11:45 amDublin
12h 19m
1 stop
STL6:04 pmLambert-St Louis
Jun 4
STL7:52 pmLambert-St Louis
9h 58m
1 stop
DUB11:50 amDublin
$1,033

Finnair flights from Ireland to St. Louis

Our best Finnair deals on Ireland to St. Louis flight tickets
Finnair
May 9
DUB9:30 amDublin
18h 49m
1 stop
STL10:19 pmLambert-St Louis
May 24
STL5:00 pmLambert-St Louis
12h 50m
1 stop
DUB11:50 amDublin
$956
Finnair
May 9
DUB9:30 amDublin
18h 49m
1 stop
STL10:19 pmLambert-St Louis
May 24
STL5:00 pmLambert-St Louis
12h 50m
1 stop
DUB11:50 amDublin
$958
Finnair
May 9
DUB9:30 amDublin
18h 49m
1 stop
STL10:19 pmLambert-St Louis
May 24
STL5:00 pmLambert-St Louis
12h 50m
1 stop
DUB11:50 amDublin
$959

momondo Fare Finder

 
Customize your flight search to find flights from Ireland to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 26, 2026.
Use the filters below to find and compare flights from Ireland to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 5/9

9:30 am-10:19 pm

1 stop18h 49m

Lambert-St Louis

Sun 5/24

5:00 pm-11:50 am

1 stop12h 50m

$956

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 5/9

9:30 am-10:19 pm

1 stop18h 49m

Lambert-St Louis

Sun 5/24

5:00 pm-11:50 am

1 stop12h 50m

$958

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 5/9

9:30 am-10:19 pm

1 stop18h 49m

Lambert-St Louis

Sun 5/24

5:00 pm-11:50 am

1 stop12h 50m

$959

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 6/7

9:30 am-11:56 pm

1 stop20h 26m

Lambert-St Louis

Sun 6/14

5:00 pm-11:50 am

1 stop12h 50m

$960

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 6/9

9:30 am-11:56 pm

1 stop20h 26m

Lambert-St Louis

Tue 6/16

5:00 pm-11:50 am

1 stop12h 50m

$979

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 8/20

7:05 pm-8:50 pm

2 stops31h 45m

Lambert-St Louis

Mon 9/14

3:42 pm-6:20 pm

2 stops20h 38m

$996

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 8/18

7:25 pm-12:14 am

2 stops34h 49m

Lambert-St Louis

Sun 9/13

4:29 pm-10:35 am

1 stop12h 06m

$1,023

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 5/6

9:30 am-10:59 pm

1 stop19h 29m

Lambert-St Louis

Thu 6/4

2:33 pm-11:50 am

1 stop15h 17m

$1,024

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 5/9

12:40 pm-11:27 am

1 stop28h 47m

Lambert-St Louis

Sun 5/24

7:20 pm-9:45 am

1 stop32h 25m

$1,025

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 6/6

9:30 am-11:56 pm

1 stop20h 26m

Lambert-St Louis

Sat 6/13

5:14 pm-11:50 am

1 stop12h 36m

$1,026

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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

You could potentially save up to 31% 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

13h 11m

Direct flights

None
The fastest flight from Ireland to St. Louis takes 13h 11m
There are no direct flights from Ireland to St. Louis. There are no popular flight routes from Ireland to St. Louis.
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Frequently asked questions about flying from Ireland to 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.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Wentzville
Alton
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
Shrewsbury
Grafton

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.

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