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Cheap flights from St. Louis to Dublin from $275

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 8/25. 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

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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.
Air Canada Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Air Canada Logo
9:50 am - 9:22 pm
DUB
-
STL
41h 32m
2 stops
$578Air Canada
Mon, Aug 10 - Thu, Aug 20
Air Canada Logo
9:23 am - 7:45 am
STL
-
DUB
16h 22m
2 stops
Air Canada Logo
9:50 am - 3:38 pm
DUB
-
STL
35h 48m
2 stops
$582Air Canada
Mon, Aug 10 - Thu, Aug 20
Multiple Airlines Logo
3:30 pm - 4:50 pm
STL
-
DUB
19h 20m
1 stop
Multiple Airlines Logo
9:20 am - 8:00 pm
DUB
-
STL
16h 40m
2 stops
$589Multiple Airlines
Tue, Sep 8 - Tue, Sep 15
Air Canada Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Air Canada Logo
9:50 am - 6:42 pm
DUB
-
STL
14h 52m
1 stop
$591Air Canada
Mon, Aug 10 - Thu, Aug 20
United Airlines Logo
5:32 pm - 9:45 am
STL
-
DUB
10h 13m
1 stop
United Airlines Logo
9:50 am - 6:42 pm
DUB
-
STL
14h 52m
1 stop
$592United Airlines
Tue, Aug 11 - Thu, Aug 20
United Airlines Logo
5:10 am - 7:45 am
STL
-
DUB
20h 35m
2 stops
United Airlines Logo
9:20 am - 2:02 pm
DUB
-
STL
10h 42m
1 stop
$593United Airlines
Tue, Aug 11 - Wed, Aug 19
Air Canada Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Air Canada Logo
9:20 am - 2:02 pm
DUB
-
STL
10h 42m
1 stop
$596Air Canada
Mon, Aug 10 - Wed, Aug 19
United Airlines Logo
1:18 pm - 9:45 am
STL
-
DUB
14h 27m
1 stop
United Airlines Logo
9:20 am - 2:02 pm
DUB
-
STL
10h 42m
1 stop
$597United Airlines
Tue, Aug 11 - Wed, Aug 19
Air Canada Logo
12:10 pm - 7:45 am
STL
-
DUB
13h 35m
1 stop
Air Canada Logo
9:20 am - 6:42 pm
DUB
-
STL
15h 22m
2 stops
$599Air Canada
Mon, Aug 10 - Wed, Aug 19
Air Canada Logo
1:18 pm - 8:15 am
STL
-
DUB
12h 57m
2 stops
Air Canada Logo
9:50 am - 6:42 pm
DUB
-
STL
14h 52m
1 stop
$600Air Canada
Tue, Aug 11 - Thu, Aug 20

Finnair flights from St. Louis to Dublin

Our best Finnair deals on St. Louis to Dublin flight tickets
Finnair
Apr 26
STL12:27 pmLambert-St Louis
15h 18m
1 stop
DUB9:45 amDublin
May 12
DUB9:30 amDublin
18h 49m
1 stop
STL10:19 pmLambert-St Louis
$662
Finnair
Apr 26
STL12:27 pmLambert-St Louis
15h 18m
1 stop
DUB9:45 amDublin
May 12
DUB9:40 amDublin
18h 39m
2 stops
STL10:19 pmLambert-St Louis
$665

British Airways flights from St. Louis to Dublin

Our best British Airways deals on St. Louis to Dublin flight tickets
British Airways
Sep 9
STL9:35 pmLambert-St Louis
28h 10m
1 stop
DUB7:45 amDublin
Sep 15
DUB12:50 pmDublin
12h 40m
1 stop
STL7:30 pmLambert-St Louis
$624
British Airways
Apr 14
STL2:33 pmLambert-St Louis
13h 07m
2 stops
DUB9:40 amDublin
Apr 22
DUB12:50 pmDublin
12h 40m
1 stop
STL7:30 pmLambert-St Louis
$657
British Airways
Mar 27
STL6:30 pmLambert-St Louis
14h 50m
2 stops
DUB2:20 pmDublin
Apr 8
DUB8:35 amDublin
16h 58m
2 stops
STL7:33 pmLambert-St Louis
$992

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 March 20, 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

Mon 8/10

12:10 pm-7:45 am

1 stop13h 35m

Dublin

Thu 8/20

9:50 am-9:22 pm

2 stops41h 32m

$578

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 8/10

9:23 am-7:45 am

2 stops16h 22m

Dublin

Thu 8/20

9:50 am-3:38 pm

2 stops35h 48m

$582

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/8

3:30 pm-4:50 pm

1 stop19h 20m

Dublin

Tue 9/15

9:20 am-8:00 pm

2 stops16h 40m

$589

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 8/10

12:10 pm-7:45 am

1 stop13h 35m

Dublin

Thu 8/20

9:50 am-6:42 pm

1 stop14h 52m

$591

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/11

5:32 pm-9:45 am

1 stop10h 13m

Dublin

Thu 8/20

9:50 am-6:42 pm

1 stop14h 52m

$592

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/11

5:10 am-7:45 am

2 stops20h 35m

Dublin

Wed 8/19

9:20 am-2:02 pm

1 stop10h 42m

$593
Quickest round-trip

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 8/10

12:10 pm-7:45 am

1 stop13h 35m

Dublin

Wed 8/19

9:20 am-2:02 pm

1 stop10h 42m

$596

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/11

1:18 pm-9:45 am

1 stop14h 27m

Dublin

Wed 8/19

9:20 am-2:02 pm

1 stop10h 42m

$597

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 8/10

12:10 pm-7:45 am

1 stop13h 35m

Dublin

Wed 8/19

9:20 am-6:42 pm

2 stops15h 22m

$599

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/11

1:18 pm-8:15 am

2 stops12h 57m

Dublin

Thu 8/20

9:50 am-6:42 pm

1 stop14h 52m

$600

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 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 $733 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

10h 10m

Direct flights

None
The fastest flight from St. Louis to Dublin takes 10h 10m
There are no direct flights from St. Louis to Dublin. There are no popular flight routes from St. Louis to Dublin.
Search flight deals

  • 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
KLMPriceFrom $412Free CancellationRating
7.8
1,473 reviews
Search KLM flights
British AirwaysPriceFrom $418Free CancellationRating
6.7
7,804 reviews
Search British Airways flights
Air CanadaPriceFrom $462Free CancellationRating
7.1
10,818 reviews
Search Air Canada flights
LufthansaPriceFrom $465Free CancellationRating
6.8
7,858 reviews
Search Lufthansa flights
IberiaPriceFrom $466Free CancellationRating
7.0
3,145 reviews
Search Iberia flights
United AirlinesPriceFrom $468Free CancellationRating
7.4
9,454 reviews
Search United Airlines flights
DeltaPriceFrom $483Free CancellationRating
7.9
8,304 reviews
Search Delta flights
American AirlinesPriceFrom $488Free CancellationRating
7.1
11,483 reviews
Search American Airlines flights
Aer LingusPriceFrom $714Free CancellationRating
7.2
1,480 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
Leixlip
Carlingford
Cavan
Malahide
Maynooth
Naas
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.

An easier way to manage your Dublin trip

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