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Cheap flights from Dublin to St. Louis from $347

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dublin to St. Louis departing on 4/18. 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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Find the cheapest flights from Dublin to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:40 am - 11:59 pm
DUB
-
STL
23h 19m
2 stops
Multiple Airlines Logo
11:55 am - 7:45 am
STL
-
DUB
13h 50m
1 stop
$759Multiple Airlines
Thu, Feb 26 - Sun, Mar 1
Finnair Logo
9:30 am - 7:30 pm
DUB
-
STL
16h 00m
1 stop
Finnair Logo
5:21 pm - 11:50 am
STL
-
DUB
12h 29m
1 stop
$845Finnair
Wed, May 6 - Wed, May 20
Finnair Logo
9:30 am - 7:30 pm
DUB
-
STL
16h 00m
1 stop
Finnair Logo
5:21 pm - 11:50 am
STL
-
DUB
12h 29m
1 stop
$869Finnair
Wed, May 6 - Wed, May 20
Finnair Logo
9:30 am - 7:29 pm
DUB
-
STL
15h 59m
1 stop
Finnair Logo
12:27 pm - 9:45 am
STL
-
DUB
15h 18m
1 stop
$870Finnair
Mon, Mar 30 - Sun, Apr 12
American Airlines Logo
11:30 am - 10:52 pm
DUB
-
STL
17h 22m
1 stop
American Airlines Logo
2:21 pm - 5:00 pm
STL
-
DUB
20h 39m
2 stops
$887American Airlines
Fri, Feb 27 - Tue, Mar 3
American Airlines Logo
11:30 am - 9:12 pm
DUB
-
STL
15h 42m
2 stops
American Airlines Logo
2:21 pm - 5:00 pm
STL
-
DUB
20h 39m
2 stops
$889American Airlines
Fri, Feb 27 - Tue, Mar 3
Finnair Logo
9:30 am - 7:30 pm
DUB
-
STL
16h 00m
1 stop
Finnair Logo
12:27 pm - 9:45 am
STL
-
DUB
15h 18m
1 stop
$896Finnair
Wed, May 6 - Wed, May 20
Iberia Logo
11:30 am - 11:04 pm
DUB
-
STL
17h 34m
1 stop
Iberia Logo
2:00 pm - 8:40 am
STL
-
DUB
12h 40m
1 stop
$899Iberia
Thu, Feb 26 - Sun, Mar 1
American Airlines Logo
11:30 am - 11:48 pm
DUB
-
STL
18h 18m
2 stops
American Airlines Logo
1:34 pm - 8:40 am
STL
-
DUB
13h 06m
2 stops
$913American Airlines
Thu, Feb 26 - Sun, Mar 1
Finnair Logo
9:40 am - 10:17 pm
DUB
-
STL
18h 37m
2 stops
Finnair Logo
5:21 pm - 11:50 am
STL
-
DUB
12h 29m
1 stop
$922Finnair
Wed, May 6 - Wed, May 20

Finnair flights from Dublin to St. Louis

Our best Finnair deals on Dublin to St. Louis flight tickets
Finnair
May 6
DUB9:30 amDublin
16h 00m
1 stop
STL7:30 pmLambert-St Louis
May 20
STL5:21 pmLambert-St Louis
12h 29m
1 stop
DUB11:50 amDublin
$845
Finnair
May 6
DUB9:30 amDublin
16h 00m
1 stop
STL7:30 pmLambert-St Louis
May 20
STL5:21 pmLambert-St Louis
12h 29m
1 stop
DUB11:50 amDublin
$869
Finnair
Mar 30
DUB9:30 amDublin
15h 59m
1 stop
STL7:29 pmLambert-St Louis
Apr 12
STL12:27 pmLambert-St Louis
15h 18m
1 stop
DUB9:45 amDublin
$870

American Airlines flights from Dublin to St. Louis

Our best American Airlines deals on Dublin 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
$887
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
$889
American Airlines
Feb 26
DUB11:30 amDublin
18h 18m
2 stops
STL11:48 pmLambert-St Louis
Mar 1
STL1:34 pmLambert-St Louis
13h 06m
2 stops
DUB8:40 amDublin
$913

momondo Fare Finder

 
Customize your flight search to find flights from Dublin 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 February 3, 2026.
Use the filters below to find and compare flights from Dublin to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 2/26

6:40 am-11:59 pm

2 stops23h 19m

Lambert-St Louis

Sun 3/1

11:55 am-7:45 am

1 stop13h 50m

$759

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 5/6

9:30 am-7:30 pm

1 stop16h 00m

Lambert-St Louis

Wed 5/20

5:21 pm-11:50 am

1 stop12h 29m

$845

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 5/6

9:30 am-7:30 pm

1 stop16h 00m

Lambert-St Louis

Wed 5/20

5:21 pm-11:50 am

1 stop12h 29m

$869

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 3/30

9:30 am-7:29 pm

1 stop15h 59m

Lambert-St Louis

Sun 4/12

12:27 pm-9:45 am

1 stop15h 18m

$870

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

$887

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 2/27

11:30 am-9:12 pm

2 stops15h 42m

Lambert-St Louis

Tue 3/3

2:21 pm-5:00 pm

2 stops20h 39m

$889

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

$896

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 2/26

11:30 am-11:04 pm

1 stop17h 34m

Lambert-St Louis

Sun 3/1

2:00 pm-8:40 am

1 stop12h 40m

$899

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 2/26

11:30 am-11:48 pm

2 stops18h 18m

Lambert-St Louis

Sun 3/1

1:34 pm-8:40 am

2 stops13h 06m

$913

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 5/6

9:40 am-10:17 pm

2 stops18h 37m

Lambert-St Louis

Wed 5/20

5:21 pm-11:50 am

1 stop12h 29m

$922

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 Dublin 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, August is the cheapest month to fly from Dublin 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 Dublin averaging around $848.

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

You could potentially save up to 16% on your flight if you consider stops on a Dublin to St. Louis flight.

How have Dublin to St. Louis flight prices changed over time?

When to book flights from Dublin to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Dublin to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Dublin to St. Louis (DUB to STL) flight deals and tips

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

Fastest flight time

15h 59m

Direct flights

None
The fastest flight from Dublin to St. Louis takes 15h 59m
There are no direct flights from Dublin to St. Louis. There are no popular flight routes from Dublin to St. Louis.
Search flight deals

  • How far is Dublin to Lambert-St Louis by plane?

    The straight-line distance from Dublin to Lambert-St Louis is 3909.9 mi. A reasonable flight in good conditions will take 15h 59m.

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

    Prices for flights from Dublin Airport to Lambert-St Louis Airport are updated daily.

  • How old do you have to be to fly from Dublin Airport 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 Dublin Airport 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
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

Why use momondo?

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

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

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

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

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

Once all potential Dublin to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to St. Louis from Dublin 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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