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Cheap flights from St. Louis to Dublin from $371

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 9/15. 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
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.
Multiple Airlines Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Multiple Airlines Logo
6:00 am - 1:25 pm
DUB
-
STL
13h 25m
1 stop
$668Multiple Airlines
Wed, Sep 9 - Tue, Sep 15
Multiple Airlines Logo
2:40 pm - 8:15 am
STL
-
DUB
11h 35m
1 stop
Multiple Airlines Logo
6:00 am - 1:25 pm
DUB
-
STL
13h 25m
1 stop
$672Multiple Airlines
Sun, Sep 6 - Tue, Sep 15
Multiple Airlines Logo
8:55 am - 8:15 am
STL
-
DUB
17h 20m
1 stop
Multiple Airlines Logo
6:05 am - 1:25 pm
DUB
-
STL
13h 20m
1 stop
$673Multiple Airlines
Tue, Sep 1 - Fri, Sep 11
United Airlines Logo
5:10 am - 7:45 am
STL
-
DUB
20h 35m
2 stops
United Airlines Logo
9:20 am - 12:49 pm
DUB
-
STL
33h 29m
2 stops
$679United Airlines
Tue, Sep 1 - Fri, Sep 11
United Airlines Logo
12:30 pm - 11:10 am
STL
-
DUB
16h 40m
1 stop
United Airlines Logo
9:20 am - 5:49 pm
DUB
-
STL
38h 29m
2 stops
$684United Airlines
Tue, Sep 1 - Fri, Sep 11
United Airlines Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
United Airlines Logo
9:20 am - 6:41 pm
DUB
-
STL
15h 21m
1 stop
$691United Airlines
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
6:00 am - 7:45 am
STL
-
DUB
19h 45m
2 stops
United Airlines Logo
9:20 am - 6:41 pm
DUB
-
STL
15h 21m
1 stop
$696United Airlines
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
10:24 am - 7:20 am
STL
-
DUB
14h 56m
2 stops
United Airlines Logo
9:20 am - 6:41 pm
DUB
-
STL
15h 21m
1 stop
$697United Airlines
Sun, Sep 6 - Tue, Sep 15
Air Canada Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Air Canada Logo
9:20 am - 8:00 pm
DUB
-
STL
16h 40m
2 stops
$700Air Canada
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
4:52 pm - 7:30 am
STL
-
DUB
32h 38m
1 stop
United Airlines Logo
9:20 am - 6:41 pm
DUB
-
STL
15h 21m
1 stop
$703United Airlines
Sat, Sep 5 - Tue, Sep 15

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United Airlines flights from St. Louis to Dublin

Our best United Airlines deals on St. Louis to Dublin flight tickets
United Airlines
Sep 1
STL5:10 amLambert-St Louis
20h 35m
2 stops
DUB7:45 amDublin
Sep 11
DUB9:20 amDublin
33h 29m
2 stops
STL12:49 pmLambert-St Louis
$679
United Airlines
Sep 1
STL12:30 pmLambert-St Louis
16h 40m
1 stop
DUB11:10 amDublin
Sep 11
DUB9:20 amDublin
38h 29m
2 stops
STL5:49 pmLambert-St Louis
$684
United Airlines
Sep 9
STL12:10 pmLambert-St Louis
13h 35m
1 stop
DUB7:45 amDublin
Sep 15
DUB9:20 amDublin
15h 21m
1 stop
STL6:41 pmLambert-St Louis
$691

Delta flights from St. Louis to Dublin

Our best Delta deals on St. Louis to Dublin flight tickets
Delta
Sep 6
STL6:45 amLambert-St Louis
20h 30m
2 stops
DUB9:15 amDublin
Sep 15
DUB5:55 amDublin
20h 36m
2 stops
STL8:31 pmLambert-St Louis
$712
Delta
Sep 6
STL6:45 amLambert-St Louis
20h 30m
2 stops
DUB9:15 amDublin
Sep 13
DUB5:55 amDublin
20h 36m
2 stops
STL8:31 pmLambert-St Louis
$762
Delta
Sep 6
STL10:45 amLambert-St Louis
16h 30m
2 stops
DUB9:15 amDublin
Sep 13
DUB5:55 amDublin
20h 36m
2 stops
STL8:31 pmLambert-St Louis
$791

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 5, 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

12:10 pm-7:45 am

1 stop13h 35m

Dublin

Tue 9/15

6:00 am-1:25 pm

1 stop13h 25m

$668
Quickest round-trip

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 9/6

2:40 pm-8:15 am

1 stop11h 35m

Dublin

Tue 9/15

6:00 am-1:25 pm

1 stop13h 25m

$672

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/1

8:55 am-8:15 am

1 stop17h 20m

Dublin

Fri 9/11

6:05 am-1:25 pm

1 stop13h 20m

$673

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/1

5:10 am-7:45 am

2 stops20h 35m

Dublin

Fri 9/11

9:20 am-12:49 pm

2 stops33h 29m

$679

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/1

12:30 pm-11:10 am

1 stop16h 40m

Dublin

Fri 9/11

9:20 am-5:49 pm

2 stops38h 29m

$684

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 9/9

12:10 pm-7:45 am

1 stop13h 35m

Dublin

Tue 9/15

9:20 am-6:41 pm

1 stop15h 21m

$691

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 9/9

6:00 am-7:45 am

2 stops19h 45m

Dublin

Tue 9/15

9:20 am-6:41 pm

1 stop15h 21m

$696

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 9/6

10:24 am-7:20 am

2 stops14h 56m

Dublin

Tue 9/15

9:20 am-6:41 pm

1 stop15h 21m

$697

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 9/9

12:10 pm-7:45 am

1 stop13h 35m

Dublin

Tue 9/15

9:20 am-8:00 pm

2 stops16h 40m

$700

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 9/5

4:52 pm-7:30 am

1 stop32h 38m

Dublin

Tue 9/15

9:20 am-6:41 pm

1 stop15h 21m

$703

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 $735 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 $593 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

11h 35m

Direct flights

None
The fastest flight from St. Louis to Dublin takes 11h 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 11h 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
KLMPriceFrom $412Free CancellationRating
7.8
1,511 reviews
Search KLM flights
British AirwaysPriceFrom $418Free CancellationRating
6.7
7,944 reviews
Search British Airways flights
LufthansaPriceFrom $430Free CancellationRating
6.8
7,974 reviews
Search Lufthansa flights
Air CanadaPriceFrom $456Free CancellationRating
7.1
11,000 reviews
Search Air Canada flights
United AirlinesPriceFrom $456Free CancellationRating
7.4
9,684 reviews
Search United Airlines flights
IberiaPriceFrom $466Free CancellationRating
7.0
3,212 reviews
Search Iberia flights
DeltaPriceFrom $483Free CancellationRating
7.9
8,459 reviews
Search Delta flights
American AirlinesPriceFrom $488Free CancellationRating
7.1
11,672 reviews
Search American Airlines flights
Aer LingusPriceFrom $714Free CancellationRating
7.3
1,543 reviews
Search Aer Lingus flights

Traveling to a place near Dublin?

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