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Cheap flights from St. Louis to Dublin from $297

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 10/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Dublin

Cheap round-trip flights

British Airways Logo
10:36 am - 9:45 amSTL-DUB
17h 09m2 stops
British Airways Logo
8:40 pm - 7:27 pmDUB-STL
28h 47m2 stops
$536British Airways
Find Deal
Wed, Oct 22 - Wed, Nov 5
Air France Logo
4:10 pm - 10:45 amSTL-DUB
12h 35m2 stops
Air France Logo
10:45 am - 4:43 pmDUB-STL
11h 58m1 stop
$537Air France
Find Deal
Tue, Oct 21 - Tue, Nov 4
Air Canada Logo
8:20 pm - 6:10 amSTL-DUB
28h 50m1 stop
Air Canada Logo
9:00 am - 3:29 pmDUB-STL
12h 29m1 stop
$539Air Canada
Find Deal
Sat, Oct 25 - Fri, Nov 7
United Airlines Logo
3:23 pm - 11:10 amSTL-DUB
13h 47m2 stops
United Airlines Logo
9:30 am - 5:39 pmDUB-STL
14h 09m2 stops
$542United Airlines
Find Deal
Mon, Oct 20 - Wed, Nov 5
Air Canada Logo
6:30 am - 8:15 amSTL-DUB
19h 45m2 stops
Air Canada Logo
9:00 am - 3:29 pmDUB-STL
12h 29m1 stop
$544Air Canada
Find Deal
Sun, Oct 19 - Fri, Nov 7
Iberia Logo
10:10 am - 9:45 amSTL-DUB
17h 35m1 stop
Iberia Logo
9:40 am - 8:55 pmDUB-STL
41h 15m2 stops
$549Iberia
Find Deal
Sun, Oct 19 - Thu, Nov 6
United Airlines Logo
12:25 pm - 10:20 amSTL-DUB
15h 55m2 stops
United Airlines Logo
9:00 am - 9:54 pmDUB-STL
18h 54m2 stops
$552United Airlines
Find Deal
Mon, Oct 20 - Fri, Nov 7
Delta Logo
11:21 am - 10:45 amSTL-DUB
17h 24m2 stops
Delta Logo
10:45 am - 4:43 pmDUB-STL
11h 58m1 stop
$557Delta
Find Deal
Mon, Oct 20 - Tue, Nov 4
Iberia Logo
5:09 pm - 9:55 amSTL-DUB
58h 46m2 stops
Iberia Logo
11:30 am - 8:55 pmDUB-STL
15h 25m1 stop
$565Iberia
Find Deal
Sat, Oct 25 - Thu, Nov 6
Delta Logo
6:40 am - 9:15 amSTL-DUB
20h 35m2 stops
Delta Logo
6:00 am - 5:15 pmDUB-STL
17h 15m2 stops
$575Delta
Find Deal
Sun, Oct 19 - Tue, Nov 4

United Airlines flights from St. Louis to Dublin

Our best United Airlines deals on St. Louis to Dublin flight tickets
United Airlines
Oct 20
STL3:23 pmLambert-St Louis
13h 47m
2 stops
DUB11:10 amDublin
Nov 5
DUB9:30 amDublin
14h 09m
2 stops
STL5:39 pmLambert-St Louis
$542
Find similar
United Airlines
Oct 20
STL12:25 pmLambert-St Louis
15h 55m
2 stops
DUB10:20 amDublin
Nov 7
DUB9:00 amDublin
18h 54m
2 stops
STL9:54 pmLambert-St Louis
$552
Find similar
United Airlines
Oct 25
STL8:20 pmLambert-St Louis
28h 50m
1 stop
DUB6:10 amDublin
Nov 4
DUB10:40 amDublin
11h 07m
1 stop
STL3:47 pmLambert-St Louis
$554
Find similar

Delta flights from St. Louis to Dublin

Our best Delta deals on St. Louis to Dublin flight tickets
Delta
Oct 20
STL11:21 amLambert-St Louis
17h 24m
2 stops
DUB10:45 amDublin
Nov 4
DUB10:45 amDublin
11h 58m
1 stop
STL4:43 pmLambert-St Louis
$557
Find similar
Delta
Oct 19
STL6:40 amLambert-St Louis
20h 35m
2 stops
DUB9:15 amDublin
Nov 4
DUB6:00 amDublin
17h 15m
2 stops
STL5:15 pmLambert-St Louis
$575
Find similar
Delta
Nov 5
STL4:10 pmLambert-St Louis
10h 35m
1 stop
DUB8:45 amDublin
Nov 9
DUB10:45 amDublin
16h 01m
2 stops
STL8:46 pmLambert-St Louis
$607
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 August 28, 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

Wed 10/22

10:36 am-9:45 am

2 stops17h 09m

Dublin

Wed 11/5

8:40 pm-7:27 pm

2 stops28h 47m

$536

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 10/21

4:10 pm-10:45 am

2 stops12h 35m

Dublin

Tue 11/4

10:45 am-4:43 pm

1 stop11h 58m

$537

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 10/25

8:20 pm-6:10 am

1 stop28h 50m

Dublin

Fri 11/7

9:00 am-3:29 pm

1 stop12h 29m

$539

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 10/20

3:23 pm-11:10 am

2 stops13h 47m

Dublin

Wed 11/5

9:30 am-5:39 pm

2 stops14h 09m

$542

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 10/19

6:30 am-8:15 am

2 stops19h 45m

Dublin

Fri 11/7

9:00 am-3:29 pm

1 stop12h 29m

$544

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 10/19

10:10 am-9:45 am

1 stop17h 35m

Dublin

Thu 11/6

9:40 am-8:55 pm

2 stops41h 15m

$549

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 10/20

12:25 pm-10:20 am

2 stops15h 55m

Dublin

Fri 11/7

9:00 am-9:54 pm

2 stops18h 54m

$552

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 10/20

11:21 am-10:45 am

2 stops17h 24m

Dublin

Tue 11/4

10:45 am-4:43 pm

1 stop11h 58m

$557

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 10/25

5:09 pm-9:55 am

2 stops58h 46m

Dublin

Thu 11/6

11:30 am-8:55 pm

1 stop15h 25m

$565

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 10/19

6:40 am-9:15 am

2 stops20h 35m

Dublin

Tue 11/4

6:00 am-5:15 pm

2 stops17h 15m

$575

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, February 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 $698. If you’re not able to fly to Dublin in February, then November is your next best option. Flight prices from St. Louis to Dublin during November average around $703.

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 $885 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 $634 on momondo.

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

As of August 2025, prices for St. Louis to Dublin flights are approximately 33% 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 10m.

  • 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
British AirwaysPriceFrom $383Free CancellationRating
6.7
7,316 reviews
Search British Airways flights
KLMPriceFrom $412Free CancellationRating
7.8
1,382 reviews
Search KLM flights
Air CanadaPriceFrom $462Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
IberiaPriceFrom $482Free CancellationRating
7.0
2,892 reviews
Search Iberia flights
United AirlinesPriceFrom $491Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights
DeltaPriceFrom $532Free CancellationRating
7.9
7,977 reviews
Search Delta flights
American AirlinesPriceFrom $573Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
LufthansaPriceFrom $627Free CancellationRating
6.8
7,368 reviews
Search Lufthansa flights
Aer LingusPriceFrom $736Free CancellationRating
7.2
1,239 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
Malahide
Maynooth
Leixlip
Bray
Castleknock
Kildare
Naas
Mullingar
Arklow
Cavan
Enniscorthy
Wicklow
Drogheda
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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