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Cheap flights from St. Louis to Dublin from $225

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 Dublin departing on 9/9. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Dublin

Cheap round-trip flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
4:05 pm - 5:10 am
STL
-
DUB
31h 05m
1 stop
Aer Lingus Logo
1:00 pm - 3:26 pm
DUB
-
STL
32h 26m
1 stop
$343Aer Lingus
Tue, Jan 12 - Fri, Jan 22
Aer Lingus Logo
4:05 pm - 5:10 am
STL
-
DUB
31h 05m
1 stop
Aer Lingus Logo
1:00 pm - 3:26 pm
DUB
-
STL
32h 26m
1 stop
$343Aer Lingus
Mon, Nov 23 - Thu, Dec 3
Lufthansa Logo
6:50 pm - 5:10 pm
STL
-
DUB
17h 20m
2 stops
Lufthansa Logo
5:10 am - 1:45 pm
DUB
-
STL
14h 35m
1 stop
$693Lufthansa
Sun, Oct 25 - Fri, Nov 6
Multiple Airlines Logo
9:44 am - 7:30 am
STL
-
DUB
15h 46m
1 stop
Multiple Airlines Logo
5:10 am - 1:45 pm
DUB
-
STL
14h 35m
1 stop
$695Multiple Airlines
Wed, Nov 4 - Wed, Nov 11
United Airlines Logo
6:00 am - 7:30 am
STL
-
DUB
20h 30m
1 stop
United Airlines Logo
9:00 am - 3:26 pm
DUB
-
STL
12h 26m
1 stop
$697United Airlines
Sun, Oct 25 - Fri, Nov 6
United Airlines Logo
11:45 am - 9:55 am
STL
-
DUB
16h 10m
1 stop
United Airlines Logo
9:00 am - 3:26 pm
DUB
-
STL
12h 26m
1 stop
$697United Airlines
Tue, Dec 8 - Tue, Dec 15
Multiple Airlines Logo
9:40 am - 8:10 am
STL
-
DUB
16h 30m
1 stop
Multiple Airlines Logo
9:00 am - 3:26 pm
DUB
-
STL
12h 26m
1 stop
$697Multiple Airlines
Tue, Dec 8 - Tue, Dec 15
Lufthansa Logo
6:50 pm - 5:10 pm
STL
-
DUB
17h 20m
2 stops
Lufthansa Logo
5:10 am - 9:40 pm
DUB
-
STL
22h 30m
2 stops
$700Lufthansa
Sun, Oct 25 - Fri, Nov 6
Air Canada Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Air Canada Logo
9:20 am - 6:41 pm
DUB
-
STL
15h 21m
1 stop
$704Air Canada
Sun, Aug 23 - Tue, Sep 8
Air Canada Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Air Canada Logo
9:50 am - 6:41 pm
DUB
-
STL
14h 51m
2 stops
$728Air Canada
Sun, Aug 23 - Tue, Sep 8

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Aer Lingus flights from St. Louis to Dublin

Our best Aer Lingus deals on St. Louis to Dublin flight tickets
Aer Lingus
Nov 23
STL4:05 pmLambert-St Louis
31h 05m
1 stop
DUB5:10 amDublin
Dec 3
DUB1:00 pmDublin
32h 26m
1 stop
STL3:26 pmLambert-St Louis
$343
Aer Lingus
Sep 8
STL8:55 amLambert-St Louis
14h 15m
1 stop
DUB5:10 amDublin
Sep 15
DUB1:20 pmDublin
13h 00m
1 stop
STL8:20 pmLambert-St Louis
$347
Aer Lingus
Sep 7
STL8:55 amLambert-St Louis
14h 15m
1 stop
DUB5:10 amDublin
Sep 16
DUB1:20 pmDublin
13h 00m
1 stop
STL8:20 pmLambert-St Louis
$348

United Airlines flights from St. Louis to Dublin

Our best United Airlines deals on St. Louis to Dublin flight tickets
United Airlines
Aug 11
STL8:00 amLambert-St Louis
19h 45m
1 stop
DUB9:45 amDublin
Aug 20
DUB9:20 amDublin
32h 42m
2 stops
STL12:02 pmLambert-St Louis
$875
United Airlines
Aug 11
STL4:50 pmLambert-St Louis
32h 55m
2 stops
DUB7:45 amDublin
Aug 20
DUB9:20 amDublin
32h 42m
2 stops
STL12:02 pmLambert-St Louis
$879
United Airlines
Aug 11
STL10:53 amLambert-St Louis
14h 27m
2 stops
DUB7:20 amDublin
Aug 19
DUB9:20 amDublin
10h 42m
1 stop
STL2:02 pmLambert-St Louis
$893

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Dublin 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 St. Louis to Dublin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 1/12

4:05 pm-5:10 am

1 stop31h 05m

Dublin

Fri 1/22

1:00 pm-3:26 pm

1 stop32h 26m

$343

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 11/23

4:05 pm-5:10 am

1 stop31h 05m

Dublin

Thu 12/3

1:00 pm-3:26 pm

1 stop32h 26m

$343

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 10/25

6:50 pm-5:10 pm

2 stops17h 20m

Dublin

Fri 11/6

5:10 am-1:45 pm

1 stop14h 35m

$693

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 11/4

9:44 am-7:30 am

1 stop15h 46m

Dublin

Wed 11/11

5:10 am-1:45 pm

1 stop14h 35m

$695

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 10/25

6:00 am-7:30 am

1 stop20h 30m

Dublin

Fri 11/6

9:00 am-3:26 pm

1 stop12h 26m

$697

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/8

11:45 am-9:55 am

1 stop16h 10m

Dublin

Tue 12/15

9:00 am-3:26 pm

1 stop12h 26m

$697

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/8

9:40 am-8:10 am

1 stop16h 30m

Dublin

Tue 12/15

9:00 am-3:26 pm

1 stop12h 26m

$697

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 10/25

6:50 pm-5:10 pm

2 stops17h 20m

Dublin

Fri 11/6

5:10 am-9:40 pm

2 stops22h 30m

$700

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 8/23

12:10 pm-7:45 am

1 stop13h 35m

Dublin

Tue 9/8

9:20 am-6:41 pm

1 stop15h 21m

$704
Quickest round-trip

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 8/23

12:10 pm-7:45 am

1 stop13h 35m

Dublin

Tue 9/8

9:50 am-6:41 pm

2 stops14h 51m

$728

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

See travel insights to Dublin from

How to get the cheapest flight ticket from St. Louis to Dublin

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 typical price of a round-trip flight between St. Louis and Dublin?

Prices are currently low for flights on this route.

Typical prices usually range from $435 to $838.
The lowest price recently found on this route was $343.

What is the cheapest month to fly to Dublin?

In general, September is the cheapest month to fly from St. Louis to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $406. If you’re not able to fly to Dublin in September, then January is your next best option. Flight prices from St. Louis to Dublin during January average around $489.

How far in advance should I book a flight from St. Louis to Dublin?

You are more likely to see cheaper flights to Dublin from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around $759 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from St. Louis for as low as $581 on momondo.

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

When to book flights from St. Louis to Dublin

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

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

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

Fastest flight time

13h 52m

Direct flights

None
The fastest flight from St. Louis to Dublin takes 13h 52m
There are no direct flights from St. Louis to Dublin. There are no popular flight routes from St. Louis to Dublin.
Search flight deals

Frequently asked questions about flying from St. Louis to Dublin

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

    The straight-line distance from Lambert-St Louis to Dublin is 3909.9 mi. A reasonable flight in good conditions will take 13h 52m.

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

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

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Dublin Airport?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Dublin Airport.

  • What documentation or ID do you need to fly to Dublin Airport?

    The necessary travel and health documents for your Dublin Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Dublin?

Best airlines flying from St. Louis to Dublin

Compare and see reviews for airlines that fly from St. Louis to Dublin with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom $325Free CancellationRating
7.3
1,682 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $429Free CancellationRating
6.7
8,129 reviews
Search British Airways flights
LufthansaPriceFrom $430Free CancellationRating
6.8
8,162 reviews
Search Lufthansa flights
United AirlinesPriceFrom $472Free CancellationRating
7.4
10,048 reviews
Search United Airlines flights
American AirlinesPriceFrom $482Free CancellationRating
7.1
11,839 reviews
Search American Airlines flights
DeltaPriceFrom $484Free CancellationRating
7.8
8,483 reviews
Search Delta flights
Air CanadaPriceFrom $523Free CancellationRating
7.1
11,399 reviews
Search Air Canada flights
KLMPriceFrom $532Free CancellationRating
7.8
1,550 reviews
Search KLM flights

Traveling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Kilkenny
Swords
Athlone
Malahide
Kildare
Mullingar
Wicklow
Bray
Portmarnock
Leixlip
Dundalk
Carlingford
Arklow
Drogheda
Castleknock
Naas
Cavan
Maynooth
Slane
Thurles

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Dublin from St. Louis.

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

Yes. momondo allows you to filter the results for St. Louis to Dublin flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between St. Louis and Dublin by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from St. Louis to Dublin now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Dublin and let you know when they change.

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