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Cheap flights from St. Louis to Dublin from $316

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 12/10. 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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Find the cheapest flights from St. Louis to Dublin

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
1:35 pm - 9:20 amSTL-DUB
13h 45m2 stops
Delta Logo
10:45 am - 8:47 pmDUB-STL
16h 02m2 stops
$424Delta
Find Deal
Sun, Nov 23 - Tue, Dec 9
Delta Logo
10:45 am - 8:45 amSTL-DUB
16h 00m2 stops
Delta Logo
11:30 am - 8:17 pmDUB-STL
14h 47m2 stops
$425Delta
Find Deal
Mon, Nov 17 - Wed, Dec 3
KLM Logo
9:00 am - 7:45 amSTL-DUB
16h 45m1 stop
KLM Logo
9:45 am - 4:49 pmDUB-STL
13h 04m1 stop
$433KLM
Find Deal
Tue, Dec 2 - Tue, Dec 9
Delta Logo
4:30 pm - 8:45 amSTL-DUB
10h 15m1 stop
Delta Logo
10:45 am - 8:47 pmDUB-STL
16h 02m2 stops
$438Delta
Find Deal
Sun, Nov 23 - Tue, Dec 9
United Airlines Logo
3:19 pm - 8:10 amSTL-DUB
10h 51m1 stop
United Airlines Logo
9:00 am - 9:58 pmDUB-STL
42h 58m2 stops
$455United Airlines
Find Deal
Fri, Dec 5 - Wed, Dec 10
Delta Logo
11:40 am - 8:00 amSTL-DUB
14h 20m2 stops
Delta Logo
10:45 am - 8:47 pmDUB-STL
16h 02m2 stops
$457Delta
Find Deal
Tue, Dec 2 - Tue, Dec 9
KLM Logo
4:32 pm - 8:45 amSTL-DUB
10h 13m1 stop
KLM Logo
9:45 am - 6:33 pmDUB-STL
14h 48m1 stop
$458KLM
Find Deal
Fri, Dec 5 - Wed, Dec 10
United Airlines Logo
6:30 am - 7:30 amSTL-DUB
19h 00m2 stops
United Airlines Logo
9:00 am - 7:27 pmDUB-STL
40h 27m2 stops
$460United Airlines
Find Deal
Fri, Jan 16 - Wed, Jan 21
KLM Logo
9:59 am - 8:45 amSTL-DUB
16h 46m2 stops
KLM Logo
1:25 pm - 11:39 pmDUB-STL
16h 14m2 stops
$461KLM
Find Deal
Tue, Jan 27 - Sun, Feb 1
Air Canada Logo
10:00 am - 7:10 amSTL-DUB
15h 10m2 stops
Air Canada Logo
9:00 am - 10:00 pmDUB-STL
43h 00m2 stops
$462Air Canada
Find Deal
Tue, Dec 9 - Wed, Feb 11

Delta flights from St. Louis to Dublin

Our best Delta deals on St. Louis to Dublin flight tickets
Delta
Nov 23
STL1:35 pmLambert-St Louis
13h 45m
2 stops
DUB9:20 amDublin
Dec 9
DUB10:45 amDublin
15h 32m
1 stop
STL8:17 pmLambert-St Louis
$424
Find similar
Delta
Nov 17
STL10:45 amLambert-St Louis
16h 00m
2 stops
DUB8:45 amDublin
Dec 3
DUB11:30 amDublin
14h 47m
2 stops
STL8:17 pmLambert-St Louis
$425
Find similar
Delta
Nov 23
STL6:40 amLambert-St Louis
20h 05m
2 stops
DUB8:45 amDublin
Dec 9
DUB10:45 amDublin
16h 02m
2 stops
STL8:47 pmLambert-St Louis
$438
Find similar

United Airlines flights from St. Louis to Dublin

Our best United Airlines deals on St. Louis to Dublin flight tickets
United Airlines
Dec 5
STL3:19 pmLambert-St Louis
10h 51m
1 stop
DUB8:10 amDublin
Dec 10
DUB9:00 amDublin
42h 58m
2 stops
STL9:58 pmLambert-St Louis
$455
Find similar
United Airlines
Jan 16
STL9:57 amLambert-St Louis
15h 33m
2 stops
DUB7:30 amDublin
Jan 21
DUB9:00 amDublin
40h 27m
2 stops
STL7:27 pmLambert-St Louis
$460
Find similar
United Airlines
Nov 15
STL5:11 pmLambert-St Louis
10h 44m
1 stop
DUB9:55 amDublin
Nov 22
DUB9:00 amDublin
12h 29m
1 stop
STL3:29 pmLambert-St Louis
$468
Find similar

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 November 13, 2025.
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

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/23

1:35 pm-9:20 am

2 stops13h 45m

Dublin

Tue 12/9

10:45 am-8:47 pm

2 stops16h 02m

$424

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 11/17

10:45 am-8:45 am

2 stops16h 00m

Dublin

Wed 12/3

11:30 am-8:17 pm

2 stops14h 47m

$425

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

9:00 am-7:45 am

1 stop16h 45m

Dublin

Tue 12/9

9:45 am-4:49 pm

1 stop13h 04m

$433

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/23

4:30 pm-8:45 am

1 stop10h 15m

Dublin

Tue 12/9

10:45 am-8:47 pm

2 stops16h 02m

$438

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 12/5

3:19 pm-8:10 am

1 stop10h 51m

Dublin

Wed 12/10

9:00 am-9:58 pm

2 stops42h 58m

$455

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

11:40 am-8:00 am

2 stops14h 20m

Dublin

Tue 12/9

10:45 am-8:47 pm

2 stops16h 02m

$457

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 12/5

4:32 pm-8:45 am

1 stop10h 13m

Dublin

Wed 12/10

9:45 am-6:33 pm

1 stop14h 48m

$458

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 1/16

6:30 am-7:30 am

2 stops19h 00m

Dublin

Wed 1/21

9:00 am-7:27 pm

2 stops40h 27m

$460

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 1/27

9:59 am-8:45 am

2 stops16h 46m

Dublin

Sun 2/1

1:25 pm-11:39 pm

2 stops16h 14m

$461

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/9

10:00 am-7:10 am

2 stops15h 10m

Dublin

Wed 2/11

9:00 am-10:00 pm

2 stops43h 00m

$462

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, November 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 $563. If you’re not able to fly to Dublin in November, then September is your next best option. Flight prices from St. Louis to Dublin during September average around $702.

What is the cheapest day to depart on your flight to Dublin?

The cheapest day to depart from St. Louis to Dublin is on a Wednesday. Travelers who choose to depart for Dublin on a Wednesday will often find tickets for as low as $865. Flights from St. Louis to Dublin on a Saturday will generally be more expensive and average around $972. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Dublin?

In the evening is the cheapest time of day to fly from St. Louis to Dublin when you can find flight prices for as low as $556. Flying to Dublin in the evening is an ideal time because this is during off-peak travel hours. Flights at noon are often more expensive with an average ticket price of $1,057.

How far in advance should I book a flight 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 $846 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 $622 on momondo.

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

As of November 2025, prices for St. Louis to Dublin flights are approximately 17% cheaper when compared to flights at the same time last year.

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

Direct flights

None
There are no direct flights from St. Louis to Dublin. There are no popular flight routes from St. Louis to Dublin.
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  • 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 10h 13m.

  • 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
7.7
1,410 reviews
Search KLM flights
Air CanadaPriceFrom $462Free CancellationRating
7.1
10,444 reviews
Search Air Canada flights
British AirwaysPriceFrom $463Free CancellationRating
6.7
7,516 reviews
Search British Airways flights
IberiaPriceFrom $482Free CancellationRating
7.0
3,011 reviews
Search Iberia flights
United AirlinesPriceFrom $507Free CancellationRating
7.4
9,016 reviews
Search United Airlines flights
LufthansaPriceFrom $526Free CancellationRating
6.8
7,572 reviews
Search Lufthansa flights
DeltaPriceFrom $532Free CancellationRating
7.9
8,008 reviews
Search Delta flights
American AirlinesPriceFrom $560Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
Aer LingusPriceFrom $736Free CancellationRating
7.2
1,370 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
Athlone
Swords
Dundalk
Malahide
Maynooth
Bray
Mullingar
Naas
Arklow
Castleknock
Cavan
Drogheda
Wicklow
Leixlip
Kildare
Thurles
Slane

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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