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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 10/6. 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
$338Aer Lingus
Sat, Jan 9 - Tue, Jan 19
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
$342Aer Lingus
Mon, Sep 7 - Wed, Sep 16
United Airlines Logo
1:08 pm - 8:10 am
STL
-
DUB
13h 02m
1 stop
United Airlines Logo
9:00 am - 12:06 pm
DUB
-
STL
33h 06m
2 stops
$679United Airlines
Tue, Dec 8 - Tue, Dec 15
Multiple Airlines Logo
6:50 pm - 7:10 am
STL
-
DUB
55h 20m
2 stops
Multiple Airlines Logo
5:10 am - 1:45 pm
DUB
-
STL
14h 35m
1 stop
$683Multiple Airlines
Fri, Oct 30 - Wed, Nov 11
Multiple Airlines Logo
6:50 pm - 7:10 am
STL
-
DUB
55h 20m
2 stops
Multiple Airlines Logo
5:10 am - 1:45 pm
DUB
-
STL
14h 35m
1 stop
$683Multiple Airlines
Fri, Oct 30 - Wed, Nov 18
Air Canada Logo
8:30 am - 7:10 am
STL
-
DUB
16h 40m
2 stops
Air Canada Logo
9:00 am - 3:43 pm
DUB
-
STL
36h 43m
2 stops
$687Air Canada
Sun, Nov 1 - Thu, Nov 19
Air Canada Logo
6:00 am - 7:10 am
STL
-
DUB
19h 10m
2 stops
Air Canada Logo
9:00 am - 12:12 pm
DUB
-
STL
33h 12m
2 stops
$687Air Canada
Sun, Nov 1 - Fri, Nov 13
United Airlines Logo
8:30 am - 10:20 am
STL
-
DUB
19h 50m
1 stop
United Airlines Logo
9:00 am - 3:26 pm
DUB
-
STL
12h 26m
1 stop
$692United Airlines
Sun, Nov 1 - Thu, Nov 19
Delta Logo
5:35 pm - 7:55 am
STL
-
DUB
32h 20m
1 stop
Delta Logo
5:45 am - 11:23 pm
DUB
-
STL
23h 38m
2 stops
$702Delta
Sun, Nov 1 - Tue, Nov 17
Delta Logo
7:00 am - 8:45 am
STL
-
DUB
19h 45m
1 stop
Delta Logo
8:50 am - 11:23 pm
DUB
-
STL
20h 33m
2 stops
$702Delta
Mon, Nov 2 - Tue, Nov 17

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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
Jan 9
STL4:05 pmLambert-St Louis
31h 05m
1 stop
DUB5:10 amDublin
Jan 19
DUB1:00 pmDublin
32h 26m
1 stop
STL3:26 pmLambert-St Louis
$338
Aer Lingus
Sep 7
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
$342
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
$343

United Airlines flights from St. Louis to Dublin

Our best United Airlines deals on St. Louis to Dublin flight tickets
United Airlines
Aug 16
STL12:10 pmLambert-St Louis
13h 35m
1 stop
DUB7:45 amDublin
Aug 25
DUB9:50 amDublin
35h 48m
2 stops
STL3:38 pmLambert-St Louis
$864
United Airlines
Aug 11
STL1:00 pmLambert-St Louis
12h 20m
1 stop
DUB7:20 amDublin
Aug 19
DUB9:20 amDublin
30h 52m
2 stops
STL10:12 amLambert-St Louis
$870
United Airlines
Aug 11
STL1:00 pmLambert-St Louis
12h 20m
1 stop
DUB7:20 amDublin
Aug 19
DUB9:20 amDublin
30h 52m
2 stops
STL10:12 amLambert-St Louis
$875

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 August 3, 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

Sat 1/9

4:05 pm-5:10 am

1 stop31h 05m

Dublin

Tue 1/19

1:00 pm-3:26 pm

1 stop32h 26m

$338

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-2:00 pm

1 stop30h 40m

$342

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/8

1:08 pm-8:10 am

1 stop13h 02m

Dublin

Tue 12/15

9:00 am-12:06 pm

2 stops33h 06m

$679

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 10/30

6:50 pm-7:10 am

2 stops55h 20m

Dublin

Wed 11/11

5:10 am-1:45 pm

1 stop14h 35m

$683

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 10/30

6:50 pm-7:10 am

2 stops55h 20m

Dublin

Wed 11/18

5:10 am-1:45 pm

1 stop14h 35m

$683

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/1

8:30 am-7:10 am

2 stops16h 40m

Dublin

Thu 11/19

9:00 am-3:43 pm

2 stops36h 43m

$687

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/1

6:00 am-7:10 am

2 stops19h 10m

Dublin

Fri 11/13

9:00 am-12:12 pm

2 stops33h 12m

$687
Quickest round-trip

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/1

8:30 am-10:20 am

1 stop19h 50m

Dublin

Thu 11/19

9:00 am-3:26 pm

1 stop12h 26m

$692

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/1

5:35 pm-7:55 am

1 stop32h 20m

Dublin

Tue 11/17

5:45 am-11:23 pm

2 stops23h 38m

$702

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 11/2

7:00 am-8:45 am

1 stop19h 45m

Dublin

Tue 11/17

8:50 am-11:23 pm

2 stops20h 33m

$702

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?

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 $338.

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

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
Aer LingusPriceFrom $325Free CancellationRating
7.3
1,685 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $429Free CancellationRating
6.7
8,143 reviews
Search British Airways flights
LufthansaPriceFrom $430Free CancellationRating
6.8
8,174 reviews
Search Lufthansa flights
American AirlinesPriceFrom $482Free CancellationRating
7.1
11,844 reviews
Search American Airlines flights
DeltaPriceFrom $484Free CancellationRating
7.8
8,490 reviews
Search Delta flights
United AirlinesPriceFrom $487Free CancellationRating
7.4
10,060 reviews
Search United Airlines flights
Air CanadaPriceFrom $523Free CancellationRating
7.1
11,419 reviews
Search Air Canada flights
KLMPriceFrom $532Free CancellationRating
7.8
1,552 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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