Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Dublin from $334

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 5/20. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Dublin

Cheap round-trip flights

Enter your travel dates to find the best prices.
Austrian Airlines Logo
11:22 am - 7:30 am
STL
-
DUB
14h 08m1 stop
Austrian Airlines Logo
9:30 am - 11:59 pm
DUB
-
STL
20h 29m1 stop
$432Austrian Airlines
Tue, Jan 13 - Tue, Jan 20
Lufthansa Logo
11:05 am - 8:10 am
STL
-
DUB
15h 05m1 stop
Lufthansa Logo
10:40 am - 5:43 pm
DUB
-
STL
13h 03m1 stop
$433Lufthansa
Thu, Jan 1 - Wed, Jan 14
Lufthansa Logo
6:35 pm - 8:10 am
STL
-
DUB
31h 35m1 stop
Lufthansa Logo
9:30 am - 11:59 pm
DUB
-
STL
20h 29m1 stop
$436Lufthansa
Mon, Dec 29 - Wed, Jan 14
Austrian Airlines Logo
11:22 am - 7:30 am
STL
-
DUB
14h 08m1 stop
Austrian Airlines Logo
9:30 am - 11:59 pm
DUB
-
STL
20h 29m1 stop
$440Austrian Airlines
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
11:22 am - 7:30 am
STL
-
DUB
14h 08m1 stop
Multiple Airlines Logo
9:00 am - 2:30 pm
DUB
-
STL
35h 30m2 stops
$452Multiple Airlines
Sat, Jan 24 - Sat, Jan 31
United Airlines Logo
9:57 am - 8:10 am
STL
-
DUB
16h 13m1 stop
United Airlines Logo
9:00 am - 10:00 pm
DUB
-
STL
43h 00m2 stops
$456United Airlines
Thu, Jan 22 - Mon, Jan 26
Air Canada Logo
4:05 pm - 6:10 am
STL
-
DUB
32h 05m1 stop
Air Canada Logo
8:00 am - 9:07 pm
DUB
-
STL
42h 07m2 stops
$458Air Canada
Fri, Mar 6 - Mon, Mar 16
United Airlines Logo
8:05 am - 7:30 am
STL
-
DUB
17h 25m2 stops
United Airlines Logo
9:00 am - 10:00 pm
DUB
-
STL
43h 00m2 stops
$460United Airlines
Thu, Jan 22 - Mon, Jan 26
United Airlines Logo
1:15 pm - 7:10 am
STL
-
DUB
11h 55m2 stops
United Airlines Logo
9:00 am - 12:29 pm
DUB
-
STL
33h 29m2 stops
$462United Airlines
Sat, Jan 10 - Sat, Jan 17
Multiple Airlines Logo
11:22 am - 7:30 am
STL
-
DUB
14h 08m1 stop
Multiple Airlines Logo
9:00 am - 3:29 pm
DUB
-
STL
12h 29m1 stop
$464Multiple Airlines
Sat, Jan 24 - Sat, Jan 31

United Airlines flights from St. Louis to Dublin

Our best United Airlines deals on St. Louis to Dublin flight tickets
United Airlines
Jan 22
STL9:57 amLambert-St Louis
16h 13m
1 stop
DUB8:10 amDublin
Jan 26
DUB9:00 amDublin
43h 00m
2 stops
STL10:00 pmLambert-St Louis
$456
Find similar
United Airlines
Jan 22
STL10:07 amLambert-St Louis
15h 23m
2 stops
DUB7:30 amDublin
Jan 26
DUB9:00 amDublin
43h 00m
2 stops
STL10:00 pmLambert-St Louis
$460
Find similar
United Airlines
Jan 10
STL1:15 pmLambert-St Louis
11h 55m
2 stops
DUB7:10 amDublin
Jan 17
DUB9:00 amDublin
33h 29m
2 stops
STL12:29 pmLambert-St Louis
$462
Find similar

Air Canada flights from St. Louis to Dublin

Our best Air Canada deals on St. Louis to Dublin flight tickets
Air Canada
Mar 6
STL4:05 pmLambert-St Louis
32h 05m
1 stop
DUB6:10 amDublin
Mar 16
DUB8:00 amDublin
42h 07m
2 stops
STL9:07 pmLambert-St Louis
$458
Find similar
Air Canada
Apr 7
STL6:35 pmLambert-St Louis
31h 40m
2 stops
DUB8:15 amDublin
Apr 16
DUB9:50 amDublin
34h 37m
2 stops
STL2:27 pmLambert-St Louis
$466
Find similar
Air Canada
Jan 11
STL6:40 pmLambert-St Louis
54h 30m
2 stops
DUB7:10 amDublin
Jan 21
DUB9:00 amDublin
35h 30m
2 stops
STL2:30 pmLambert-St Louis
$467
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 December 17, 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

Tue 1/13

11:22 am-7:30 am

1 stop14h 08m

Dublin

Tue 1/20

9:30 am-11:59 pm

1 stop20h 29m

$432

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 1/1

11:05 am-8:10 am

1 stop15h 05m

Dublin

Wed 1/14

10:40 am-5:43 pm

1 stop13h 03m

$433

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 12/29

6:35 pm-8:10 am

1 stop31h 35m

Dublin

Wed 1/14

9:30 am-11:59 pm

1 stop20h 29m

$436

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 1/13

11:22 am-7:30 am

1 stop14h 08m

Dublin

Tue 1/20

9:30 am-11:59 pm

1 stop20h 29m

$440

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 1/24

11:22 am-7:30 am

1 stop14h 08m

Dublin

Sat 1/31

9:00 am-2:30 pm

2 stops35h 30m

$452

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 1/22

9:57 am-8:10 am

1 stop16h 13m

Dublin

Mon 1/26

9:00 am-10:00 pm

2 stops43h 00m

$456

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 3/6

4:05 pm-6:10 am

1 stop32h 05m

Dublin

Mon 3/16

8:00 am-9:07 pm

2 stops42h 07m

$458

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 1/22

8:05 am-7:30 am

2 stops17h 25m

Dublin

Mon 1/26

9:00 am-10:00 pm

2 stops43h 00m

$460

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 1/10

1:15 pm-7:10 am

2 stops11h 55m

Dublin

Sat 1/17

9:00 am-12:29 pm

2 stops33h 29m

$462

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 1/24

11:22 am-7:30 am

1 stop14h 08m

Dublin

Sat 1/31

9:00 am-3:29 pm

1 stop12h 29m

$464

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 January is your next best option. Flight prices from St. Louis to Dublin during January average around $661.

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 $820 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 $614 on momondo.

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

As of December 2025, prices for St. Louis to Dublin flights are approximately 43% more expensive 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 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
7.7
1,430 reviews
Search KLM flights
Air CanadaPriceFrom $462Free CancellationRating
7.1
10,534 reviews
Search Air Canada flights
British AirwaysPriceFrom $463Free CancellationRating
6.7
7,585 reviews
Search British Airways flights
IberiaPriceFrom $482Free CancellationRating
7.0
3,050 reviews
Search Iberia flights
DeltaPriceFrom $483Free CancellationRating
7.9
8,007 reviews
Search Delta flights
United AirlinesPriceFrom $494Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights
LufthansaPriceFrom $498Free CancellationRating
6.8
7,634 reviews
Search Lufthansa flights
American AirlinesPriceFrom $551Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
Aer LingusPriceFrom $759Free CancellationRating
7.2
1,395 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
Mullingar
Bray
Kildare
Drogheda
Naas
Arklow
Cavan
Castleknock
Wicklow
Leixlip
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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 1/16
Fri 1/23
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland