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Cheap flights from St. Louis to Dublin from $190

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 9/2. 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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0 bags

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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
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:00 pm
DUB
-
STL
30h 40m
1 stop
$325Aer Lingus
Wed, Sep 9 - Tue, Sep 15
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:00 pm
DUB
-
STL
30h 40m
1 stop
$326Aer Lingus
Wed, Sep 9 - Wed, Sep 16
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:00 pm
DUB
-
STL
30h 40m
1 stop
$334Aer Lingus
Tue, Sep 1 - Wed, Sep 9
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:00 pm
DUB
-
STL
30h 40m
1 stop
$335Aer Lingus
Tue, Sep 1 - Wed, Sep 9
Aer Lingus Logo
4:15 pm - 5:15 am
STL
-
DUB
32h 00m
1 stop
Aer Lingus Logo
1:00 pm - 3:30 pm
DUB
-
STL
32h 30m
1 stop
$351Aer Lingus
Mon, Oct 26 - Wed, Nov 4
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:00 pm
DUB
-
STL
30h 40m
1 stop
$354Aer Lingus
Tue, Sep 1 - Wed, Sep 16
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 8:00 pm
DUB
-
STL
12h 40m
1 stop
$355Aer Lingus
Tue, Sep 1 - Tue, Sep 15
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 2:00 pm
DUB
-
STL
30h 40m
1 stop
$356Aer Lingus
Wed, Sep 9 - Tue, Sep 15
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 8:00 pm
DUB
-
STL
12h 40m
1 stop
$368Aer Lingus
Mon, Sep 7 - Wed, Sep 16
Aer Lingus Logo
8:55 am - 5:10 am
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
1:20 pm - 8:00 pm
DUB
-
STL
12h 40m
1 stop
$369Aer Lingus
Mon, Sep 7 - Tue, Sep 15

Aer Lingus flights from St. Louis to Dublin

Our best Aer Lingus deals on St. Louis to Dublin flight tickets
Aer Lingus
Sep 9
STL8:55 amLambert-St Louis
14h 15m
1 stop
DUB5:10 amDublin
Sep 15
DUB1:20 pmDublin
30h 40m
1 stop
STL2:00 pmLambert-St Louis
$325
Aer Lingus
Sep 9
STL8:55 amLambert-St Louis
14h 15m
1 stop
DUB5:10 amDublin
Sep 16
DUB1:20 pmDublin
30h 40m
1 stop
STL2:00 pmLambert-St Louis
$326
Aer Lingus
Sep 1
STL8:55 amLambert-St Louis
14h 15m
1 stop
DUB5:10 amDublin
Sep 9
DUB1:20 pmDublin
30h 40m
1 stop
STL2:00 pmLambert-St Louis
$334

Air Canada flights from St. Louis to Dublin

Our best Air Canada deals on St. Louis to Dublin flight tickets
Air Canada
Sep 2
STL12:10 pmLambert-St Louis
13h 35m
1 stop
DUB7:45 amDublin
Sep 16
DUB9:20 amDublin
32h 37m
2 stops
STL11:57 amLambert-St Louis
$683
Air Canada
Sep 1
STL2:40 pmLambert-St Louis
35h 05m
2 stops
DUB7:45 amDublin
Sep 8
DUB9:20 amDublin
32h 37m
2 stops
STL11:57 amLambert-St Louis
$686
Air Canada
Sep 9
STL8:50 amLambert-St Louis
16h 55m
2 stops
DUB7:45 amDublin
Sep 16
DUB9:20 amDublin
32h 37m
2 stops
STL11:57 amLambert-St Louis
$687

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 May 22, 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

Wed 9/9

8:55 am-5:10 am

1 stop14h 15m

Dublin

Tue 9/15

1:20 pm-2:00 pm

1 stop30h 40m

$325

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 9/9

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 9/16

1:20 pm-2:00 pm

1 stop30h 40m

$326

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/1

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 9/9

1:20 pm-2:00 pm

1 stop30h 40m

$334

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/1

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 9/9

1:20 pm-2:00 pm

1 stop30h 40m

$335

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 10/26

4:15 pm-5:15 am

1 stop32h 00m

Dublin

Wed 11/4

1:00 pm-3:30 pm

1 stop32h 30m

$351

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/1

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 9/16

1:20 pm-2:00 pm

1 stop30h 40m

$354
Quickest round-trip

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/1

8:55 am-5:10 am

1 stop14h 15m

Dublin

Tue 9/15

1:20 pm-8:00 pm

1 stop12h 40m

$355

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 9/9

8:55 am-5:10 am

1 stop14h 15m

Dublin

Tue 9/15

1:20 pm-2:00 pm

1 stop30h 40m

$356

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 9/7

8:55 am-5:10 am

1 stop14h 15m

Dublin

Wed 9/16

1:20 pm-8:00 pm

1 stop12h 40m

$368

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 9/7

8:55 am-5:10 am

1 stop14h 15m

Dublin

Tue 9/15

1:20 pm-8:00 pm

1 stop12h 40m

$369

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 $719 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 $571 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

12h 25m

Direct flights

None
The fastest flight from St. Louis to Dublin takes 12h 25m
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 12h 25m.

  • 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
1,578 reviews
Search Aer Lingus flights
KLMPriceFrom $412Free CancellationRating
7.8
1,519 reviews
Search KLM flights
British AirwaysPriceFrom $418Free CancellationRating
6.7
7,995 reviews
Search British Airways flights
LufthansaPriceFrom $430Free CancellationRating
6.8
8,019 reviews
Search Lufthansa flights
Air CanadaPriceFrom $456Free CancellationRating
7.1
11,076 reviews
Search Air Canada flights
United AirlinesPriceFrom $456Free CancellationRating
7.4
9,753 reviews
Search United Airlines flights
IberiaPriceFrom $466Free CancellationRating
7.0
3,219 reviews
Search Iberia flights
DeltaPriceFrom $483Free CancellationRating
7.9
8,445 reviews
Search Delta flights
American AirlinesPriceFrom $488Free CancellationRating
7.1
11,648 reviews
Search American Airlines flights

Traveling to a place near Dublin?

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