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Cheap flights from St. Louis to Dublin from $231

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 1/21. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Austrian Airlines Logo
11:50 am - 7:30 amSTL-DUB
13h 40m1 stop
Austrian Airlines Logo
9:30 am - 11:42 pmDUB-STL
20h 12m1 stop
$417Austrian Airlines
Find Deal
Fri, Dec 5 - Tue, Dec 9
Lufthansa Logo
11:50 am - 7:30 amSTL-DUB
13h 40m1 stop
Lufthansa Logo
5:10 am - 1:55 pmDUB-STL
14h 45m1 stop
$419Lufthansa
Find Deal
Tue, Dec 2 - Fri, Dec 12
Lufthansa Logo
11:50 am - 7:30 amSTL-DUB
13h 40m1 stop
Lufthansa Logo
5:10 am - 1:55 pmDUB-STL
14h 45m1 stop
$420Lufthansa
Find Deal
Tue, Dec 2 - Fri, Dec 12
Lufthansa Logo
11:50 am - 7:30 amSTL-DUB
13h 40m1 stop
Lufthansa Logo
5:10 am - 1:55 pmDUB-STL
14h 45m1 stop
$421Lufthansa
Find Deal
Tue, Dec 2 - Fri, Dec 12
Austrian Airlines Logo
11:50 am - 7:30 amSTL-DUB
13h 40m1 stop
Austrian Airlines Logo
9:30 am - 11:42 pmDUB-STL
20h 12m1 stop
$422Austrian Airlines
Find Deal
Fri, Dec 5 - Tue, Dec 9
Austrian Airlines Logo
11:50 am - 7:30 amSTL-DUB
13h 40m1 stop
Austrian Airlines Logo
9:30 am - 11:42 pmDUB-STL
20h 12m1 stop
$423Austrian Airlines
Find Deal
Fri, Dec 5 - Tue, Dec 9
Multiple Airlines Logo
9:00 am - 7:45 amSTL-DUB
16h 45m1 stop
Multiple Airlines Logo
10:45 am - 4:35 pmDUB-STL
11h 50m1 stop
$424Multiple Airlines
Find Deal
Tue, Dec 2 - Wed, Dec 10
Multiple Airlines Logo
11:04 am - 8:40 amSTL-DUB
15h 36m1 stop
Multiple Airlines Logo
11:30 am - 11:06 pmDUB-STL
17h 36m2 stops
$425Multiple Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10
Lufthansa Logo
11:50 am - 7:30 amSTL-DUB
13h 40m1 stop
Lufthansa Logo
5:10 am - 1:55 pmDUB-STL
14h 45m1 stop
$426Lufthansa
Find Deal
Tue, Dec 2 - Fri, Dec 12
Multiple Airlines Logo
8:13 am - 8:40 amSTL-DUB
18h 27m2 stops
Multiple Airlines Logo
11:30 am - 8:38 pmDUB-STL
15h 08m1 stop
$427Multiple Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10

United Airlines flights from St. Louis to Dublin

Our best United Airlines deals on St. Louis to Dublin flight tickets
United Airlines
Dec 3
STL6:42 pmLambert-St Louis
31h 28m
1 stop
DUB8:10 amDublin
Dec 10
DUB9:00 amDublin
33h 15m
2 stops
STL12:15 pmLambert-St Louis
$455
Find similar
United Airlines
Dec 5
STL1:00 pmLambert-St Louis
12h 30m
2 stops
DUB7:30 amDublin
Dec 10
DUB9:00 amDublin
42h 58m
2 stops
STL9:58 pmLambert-St Louis
$460
Find similar
United Airlines
Dec 1
STL12:31 pmLambert-St Louis
15h 49m
2 stops
DUB10:20 amDublin
Dec 7
DUB9:00 amDublin
12h 29m
1 stop
STL3:29 pmLambert-St Louis
$463
Find similar

Austrian Airlines flights from St. Louis to Dublin

Our best Austrian Airlines deals on St. Louis to Dublin flight tickets
Austrian Airlines
Dec 5
STL11:50 amLambert-St Louis
13h 40m
1 stop
DUB7:30 amDublin
Dec 9
DUB9:30 amDublin
20h 12m
1 stop
STL11:42 pmLambert-St Louis
$422
Find similar
Austrian Airlines
Dec 5
STL11:50 amLambert-St Louis
13h 40m
1 stop
DUB7:30 amDublin
Dec 9
DUB9:30 amDublin
20h 12m
1 stop
STL11:42 pmLambert-St Louis
$423
Find similar
Austrian Airlines
Dec 5
STL11:50 amLambert-St Louis
13h 40m
1 stop
DUB7:30 amDublin
Dec 9
DUB9:30 amDublin
20h 12m
1 stop
STL11:42 pmLambert-St Louis
$428
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 26, 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

Fri 12/5

11:50 am-7:30 am

1 stop13h 40m

Dublin

Tue 12/9

9:30 am-11:42 pm

1 stop20h 12m

$417

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

11:50 am-7:30 am

1 stop13h 40m

Dublin

Fri 12/12

5:10 am-1:55 pm

1 stop14h 45m

$419

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

11:50 am-7:30 am

1 stop13h 40m

Dublin

Fri 12/12

5:10 am-1:55 pm

1 stop14h 45m

$420

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

11:50 am-7:30 am

1 stop13h 40m

Dublin

Fri 12/12

5:10 am-1:55 pm

1 stop14h 45m

$421

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 12/5

11:50 am-7:30 am

1 stop13h 40m

Dublin

Tue 12/9

9:30 am-11:42 pm

1 stop20h 12m

$422

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 12/5

11:50 am-7:30 am

1 stop13h 40m

Dublin

Tue 12/9

9:30 am-11:42 pm

1 stop20h 12m

$423

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

9:00 am-7:45 am

1 stop16h 45m

Dublin

Wed 12/10

10:45 am-4:35 pm

1 stop11h 50m

$424

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 12/3

11:04 am-8:40 am

1 stop15h 36m

Dublin

Wed 12/10

11:30 am-11:06 pm

2 stops17h 36m

$425

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

11:50 am-7:30 am

1 stop13h 40m

Dublin

Fri 12/12

5:10 am-1:55 pm

1 stop14h 45m

$426

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 12/3

8:13 am-8:40 am

2 stops18h 27m

Dublin

Wed 12/10

11:30 am-8:38 pm

1 stop15h 08m

$427

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 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 $600. 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 $850 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

Fastest flight time

10h 57m

Direct flights

None
The fastest flight from St. Louis to Dublin takes 10h 57m
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 56m.

  • 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
1,422 reviews
Search KLM flights
Air CanadaPriceFrom $462Free CancellationRating
7.1
10,476 reviews
Search Air Canada flights
British AirwaysPriceFrom $463Free CancellationRating
6.7
7,539 reviews
Search British Airways flights
IberiaPriceFrom $482Free CancellationRating
7.0
3,034 reviews
Search Iberia flights
DeltaPriceFrom $483Free CancellationRating
7.9
7,998 reviews
Search Delta flights
United AirlinesPriceFrom $506Free CancellationRating
7.4
9,046 reviews
Search United Airlines flights
LufthansaPriceFrom $526Free CancellationRating
6.8
7,594 reviews
Search Lufthansa flights
American AirlinesPriceFrom $560Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
Aer LingusPriceFrom $721Free CancellationRating
7.2
1,381 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.

An easier way to manage your Dublin trip

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