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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 9/16. 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
$349Aer Lingus
Mon, Nov 9 - Wed, Nov 18
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:02 pm
DUB
-
STL
30h 42m
1 stop
$353Aer Lingus
Tue, Aug 11 - Wed, Aug 19
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:02 pm
DUB
-
STL
30h 42m
1 stop
$354Aer Lingus
Wed, Aug 12 - Wed, Aug 19
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 8:24 pm
DUB
-
STL
13h 04m
1 stop
$355Aer Lingus
Sun, Aug 9 - Tue, Aug 25
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:02 pm
DUB
-
STL
30h 42m
1 stop
$359Aer Lingus
Tue, Aug 11 - Wed, Aug 19
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 8:24 pm
DUB
-
STL
13h 04m
1 stop
$367Aer Lingus
Mon, Aug 10 - Thu, Aug 20
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 8:20 pm
DUB
-
STL
13h 00m
1 stop
$374Aer Lingus
Wed, Sep 2 - Wed, Sep 9
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 8:20 pm
DUB
-
STL
13h 00m
1 stop
$375Aer Lingus
Tue, Sep 1 - Tue, Sep 8
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:02 pm
DUB
-
STL
30h 42m
1 stop
$403Aer Lingus
Wed, Aug 19 - Sun, Aug 23
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 8:24 pm
DUB
-
STL
13h 04m
1 stop
$404Aer Lingus
Fri, Aug 14 - Fri, Aug 21

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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
Aug 11
STL8:55 amLambert-St Louis
14h 15m
1 stop
DUB5:10 amDublin
Aug 19
DUB1:20 pmDublin
30h 42m
1 stop
STL2:02 pmLambert-St Louis
$353
Aer Lingus
Aug 12
STL8:55 amLambert-St Louis
14h 15m
1 stop
DUB5:10 amDublin
Sep 9
DUB1:20 pmDublin
13h 00m
1 stop
STL8:20 pmLambert-St Louis
$354
Aer Lingus
Aug 9
STL8:55 amLambert-St Louis
14h 15m
1 stop
DUB5:10 amDublin
Aug 25
DUB1:20 pmDublin
13h 04m
1 stop
STL8:24 pmLambert-St Louis
$355

Air Canada flights from St. Louis to Dublin

Our best Air Canada deals on St. Louis to Dublin flight tickets
Air Canada
Aug 9
STL12:10 pmLambert-St Louis
13h 35m
1 stop
DUB7:45 amDublin
Aug 25
DUB9:50 amDublin
14h 52m
1 stop
STL6:42 pmLambert-St Louis
$700
Air Canada
Aug 3
STL12:10 pmLambert-St Louis
13h 35m
1 stop
DUB7:45 amDublin
Aug 19
DUB9:20 amDublin
10h 42m
1 stop
STL2:02 pmLambert-St Louis
$727
Air Canada
Aug 9
STL2:40 pmLambert-St Louis
11h 35m
1 stop
DUB8:15 amDublin
Aug 25
DUB9:20 amDublin
15h 22m
2 stops
STL6:42 pmLambert-St Louis
$734

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 June 30, 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

Mon 11/9

4:05 pm-5:10 am

1 stop31h 05m

Dublin

Wed 11/18

1:00 pm-3:26 pm

1 stop32h 26m

$349

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/11

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 8/19

1:20 pm-2:02 pm

1 stop30h 42m

$353

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 8/12

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 8/19

1:20 pm-2:02 pm

1 stop30h 42m

$354

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 8/9

8:55 am-5:10 am

1 stop14h 15m

Dublin

Tue 8/25

1:20 pm-8:24 pm

1 stop13h 04m

$355

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/11

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 8/19

1:20 pm-2:02 pm

1 stop30h 42m

$359

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 8/10

8:55 am-5:10 am

1 stop14h 15m

Dublin

Thu 8/20

1:20 pm-8:24 pm

1 stop13h 04m

$367
Quickest round-trip

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 9/2

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 9/9

1:20 pm-8:20 pm

1 stop13h 00m

$374

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/1

8:55 am-5:10 am

1 stop14h 15m

Dublin

Tue 9/8

1:20 pm-8:20 pm

1 stop13h 00m

$375

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 8/19

8:55 am-5:10 am

1 stop14h 15m

Dublin

Sun 8/23

1:20 pm-2:02 pm

1 stop30h 42m

$403

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 8/14

8:55 am-5:10 am

1 stop14h 15m

Dublin

Fri 8/21

1:20 pm-8:24 pm

1 stop13h 04m

$404

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 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?

What is the cheapest month to fly to Dublin?

In general, January 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 $523. If you’re not able to fly to Dublin in January, then February is your next best option. Flight prices from St. Louis to Dublin during February average around $543.

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 $720 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 35m

Direct flights

None
The fastest flight from St. Louis to Dublin takes 13h 35m
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 35m.

  • 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
1,632 reviews
Search Aer Lingus flights
Air CanadaPriceFrom $403Free CancellationRating
7.1
11,277 reviews
Search Air Canada flights
KLMPriceFrom $412Free CancellationRating
7.8
1,531 reviews
Search KLM flights
British AirwaysPriceFrom $418Free CancellationRating
6.7
8,089 reviews
Search British Airways flights
LufthansaPriceFrom $430Free CancellationRating
6.8
8,109 reviews
Search Lufthansa flights
United AirlinesPriceFrom $456Free CancellationRating
7.4
9,904 reviews
Search United Airlines flights
IberiaPriceFrom $466Free CancellationRating
7.0
3,246 reviews
Search Iberia flights
American AirlinesPriceFrom $482Free CancellationRating
7.1
11,762 reviews
Search American Airlines flights
DeltaPriceFrom $483Free CancellationRating
7.8
8,451 reviews
Search Delta flights

Traveling to a place near Dublin?

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