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Cheap flights from Ireland to St. Louis from $360

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 9/19. 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
1 adult, Economy, 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.
Scandinavian Airlines Logo
7:05 pm - 8:33 pm
DUB
-
STL
31h 28m
2 stops
Scandinavian Airlines Logo
1:40 pm - 9:25 am
STL
-
DUB
37h 45m
2 stops
$761Scandinavian Airlines
Fri, Aug 28 - Thu, Sep 10
Multiple Airlines Logo
10:00 pm - 4:11 pm
DUB
-
STL
48h 11m
2 stops
Multiple Airlines Logo
11:21 am - 7:55 am
STL
-
DUB
14h 34m
1 stop
$857Multiple Airlines
Thu, Aug 27 - Wed, Sep 9
Multiple Airlines Logo
6:55 am - 4:11 pm
DUB
-
STL
39h 16m
2 stops
Multiple Airlines Logo
5:59 pm - 10:00 am
STL
-
DUB
10h 01m
1 stop
$858Multiple Airlines
Sat, Sep 5 - Tue, Sep 15
Multiple Airlines Logo
6:55 am - 4:11 pm
DUB
-
STL
39h 16m
2 stops
Multiple Airlines Logo
3:52 pm - 7:55 am
STL
-
DUB
10h 03m
1 stop
$858Multiple Airlines
Sat, Sep 5 - Tue, Sep 15
Multiple Airlines Logo
7:25 pm - 5:54 pm
DUB
-
STL
52h 29m
2 stops
Multiple Airlines Logo
3:52 pm - 7:55 am
STL
-
DUB
10h 03m
1 stop
$864Multiple Airlines
Tue, Sep 8 - Tue, Sep 15
Multiple Airlines Logo
6:55 am - 4:11 pm
DUB
-
STL
39h 16m
2 stops
Multiple Airlines Logo
3:52 pm - 7:55 am
STL
-
DUB
10h 03m
1 stop
$869Multiple Airlines
Sat, Sep 5 - Tue, Sep 15
Multiple Airlines Logo
11:30 am - 11:55 pm
DUB
-
STL
18h 25m
2 stops
Multiple Airlines Logo
1:55 pm - 10:15 am
STL
-
DUB
14h 20m
2 stops
$898Multiple Airlines
Fri, Dec 18 - Fri, Jan 8
Multiple Airlines Logo
9:40 am - 8:20 pm
DUB
-
STL
16h 40m
2 stops
Multiple Airlines Logo
2:40 pm - 8:15 am
STL
-
DUB
11h 35m
1 stop
$990Multiple Airlines
Wed, Sep 9 - Wed, Sep 16
Multiple Airlines Logo
8:55 am - 1:25 pm
DUB
-
STL
34h 30m
3 stops
Multiple Airlines Logo
2:40 pm - 10:25 pm
STL
-
DUB
25h 45m
3 stops
$999Multiple Airlines
Mon, Sep 7 - Mon, Sep 14
American Airlines Logo
11:30 am - 9:08 pm
DUB
-
STL
15h 38m
2 stops
American Airlines Logo
10:47 am - 8:30 am
STL
-
DUB
15h 43m
1 stop
$1,045American Airlines
Wed, Dec 2 - Sun, Dec 6

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Lufthansa flights from Ireland to St. Louis

Our best Lufthansa deals on Ireland to St. Louis flight tickets
Lufthansa
Sep 8
DUB6:00 amDublin
23h 38m
2 stops
STL11:38 pmLambert-St Louis
Sep 15
STL8:40 amLambert-St Louis
20h 00m
1 stop
DUB10:40 amDublin
$1,051
Lufthansa
Sep 14
DUB6:05 amDublin
19h 06m
2 stops
STL7:11 pmLambert-St Louis
Sep 30
STL1:29 pmLambert-St Louis
14h 16m
1 stop
DUB9:45 amDublin
$1,052
Lufthansa
Sep 8
DUB6:00 amDublin
23h 38m
2 stops
STL11:38 pmLambert-St Louis
Sep 15
STL8:40 amLambert-St Louis
20h 00m
1 stop
DUB10:40 amDublin
$1,077

Iberia flights from Ireland to St. Louis

Our best Iberia deals on Ireland to St. Louis flight tickets
Iberia
Sep 8
DUB12:40 pmDublin
13h 46m
1 stop
STL8:26 pmLambert-St Louis
Sep 15
STL3:34 pmLambert-St Louis
12h 11m
1 stop
DUB9:45 amDublin
$1,039
Iberia
Sep 5
DUB12:40 pmDublin
17h 02m
1 stop
STL11:42 pmLambert-St Louis
Sep 15
STL12:46 pmLambert-St Louis
14h 59m
1 stop
DUB9:45 amDublin
$1,047
Iberia
Sep 5
DUB12:40 pmDublin
17h 02m
1 stop
STL11:42 pmLambert-St Louis
Sep 15
STL12:46 pmLambert-St Louis
14h 59m
1 stop
DUB9:45 amDublin
$1,059

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 July 28, 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

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 8/28

7:05 pm-8:33 pm

2 stops31h 28m

Lambert-St Louis

Thu 9/10

1:40 pm-9:25 am

2 stops37h 45m

$761

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 8/27

10:00 pm-4:11 pm

2 stops48h 11m

Lambert-St Louis

Wed 9/9

11:21 am-7:55 am

1 stop14h 34m

$857

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 9/5

6:55 am-4:11 pm

2 stops39h 16m

Lambert-St Louis

Tue 9/15

5:59 pm-10:00 am

1 stop10h 01m

$858

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 9/5

6:55 am-4:11 pm

2 stops39h 16m

Lambert-St Louis

Tue 9/15

3:52 pm-7:55 am

1 stop10h 03m

$858

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 9/8

7:25 pm-5:54 pm

2 stops52h 29m

Lambert-St Louis

Tue 9/15

3:52 pm-7:55 am

1 stop10h 03m

$864

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 9/5

6:55 am-4:11 pm

2 stops39h 16m

Lambert-St Louis

Tue 9/15

3:52 pm-7:55 am

1 stop10h 03m

$869

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 12/18

11:30 am-11:55 pm

2 stops18h 25m

Lambert-St Louis

Fri 1/8

1:55 pm-10:15 am

2 stops14h 20m

$898
Quickest round-trip

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 9/9

9:40 am-8:20 pm

2 stops16h 40m

Lambert-St Louis

Wed 9/16

2:40 pm-8:15 am

1 stop11h 35m

$990

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 9/7

8:55 am-1:25 pm

3 stops34h 30m

Lambert-St Louis

Mon 9/14

2:40 pm-10:25 pm

3 stops25h 45m

$999

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 12/2

11:30 am-9:08 pm

2 stops15h 38m

Lambert-St Louis

Sun 12/6

10:47 am-8:30 am

1 stop15h 43m

$1,045

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

What is the cheapest month to fly to St. Louis?

In general, November 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 $0. The month of April is another great option to travel to St. Louis, with average flight prices from Ireland averaging around $979.

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

You could potentially save up to 33% 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 26m

Direct flights

None
The fastest flight from Ireland to St. Louis takes 13h 26m
There are no direct flights from Ireland to St. Louis. There are no popular flight routes from Ireland to St. Louis.
Search flight deals

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
Fairview Heights
Hermann
St. Peters
Maryland Heights
Florissant
Collinsville
O'Fallon
Alton
Fenton
Farmington
Clayton
Wentzville
Festus
Eureka
Litchfield
Edwardsville
Grafton
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.

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