Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Dublin from $345

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 10/3. 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

United Airlines Logo
5:30 pm - 7:10 amSTL-DUB
31h 40m2 stops
United Airlines Logo
9:20 am - 11:44 pmDUB-STL
20h 24m1 stop
$381United Airlines
Find Deal
Mon, Aug 4 - Wed, Aug 20
United Airlines Logo
3:20 pm - 9:45 amSTL-DUB
12h 25m1 stop
United Airlines Logo
9:20 am - 11:44 pmDUB-STL
20h 24m1 stop
$384United Airlines
Find Deal
Mon, Aug 4 - Wed, Aug 20
United Airlines Logo
12:25 pm - 9:45 amSTL-DUB
15h 20m1 stop
United Airlines Logo
9:00 am - 3:29 pmDUB-STL
12h 29m1 stop
$397United Airlines
Find Deal
Tue, Oct 21 - Wed, Nov 5
Air Canada Logo
4:05 pm - 8:15 amSTL-DUB
10h 10m1 stop
Air Canada Logo
9:00 am - 3:29 pmDUB-STL
12h 29m1 stop
$399Air Canada
Find Deal
Tue, Oct 21 - Wed, Nov 5
Air Canada Logo
3:23 pm - 8:15 amSTL-DUB
34h 52m2 stops
Air Canada Logo
9:00 am - 10:45 pmDUB-STL
19h 45m2 stops
$405Air Canada
Find Deal
Tue, Oct 21 - Wed, Nov 5
Iberia Logo
12:21 pm - 9:45 amSTL-DUB
15h 24m1 stop
Iberia Logo
2:05 pm - 10:29 pmDUB-STL
14h 24m1 stop
$408Iberia
Find Deal
Wed, Oct 22 - Fri, Nov 7
Delta Logo
4:27 pm - 8:45 amSTL-DUB
10h 18m1 stop
Delta Logo
9:45 am - 6:02 pmDUB-STL
14h 17m1 stop
$412Delta
Find Deal
Wed, Nov 12 - Wed, Nov 19
Delta Logo
5:30 pm - 7:45 amSTL-DUB
32h 15m1 stop
Delta Logo
9:45 am - 6:02 pmDUB-STL
14h 17m1 stop
$418Delta
Find Deal
Mon, Nov 24 - Wed, Dec 3
Iberia Logo
1:03 pm - 6:30 amSTL-DUB
11h 27m1 stop
Iberia Logo
9:30 am - 9:06 pmDUB-STL
17h 36m1 stop
$478Iberia
Find Deal
Sun, Sep 7 - Thu, Sep 18
Lufthansa Logo
11:49 am - 9:55 amSTL-DUB
16h 06m1 stop
Lufthansa Logo
11:45 am - 1:55 pmDUB-STL
32h 10m1 stop
$479Lufthansa
Find Deal
Tue, Nov 4 - Tue, Nov 11

Air Canada flights from St. Louis to Dublin

Our best Air Canada deals on St. Louis to Dublin flight tickets
Air Canada
Oct 21
STL4:05 pmLambert-St Louis
10h 10m
1 stop
DUB8:15 amDublin
Nov 5
DUB9:00 amDublin
12h 29m
1 stop
STL3:29 pmLambert-St Louis
$399
Find similar
Air Canada
Oct 21
STL3:23 pmLambert-St Louis
34h 52m
2 stops
DUB8:15 amDublin
Nov 5
DUB9:00 amDublin
19h 45m
2 stops
STL10:45 pmLambert-St Louis
$405
Find similar
Air Canada
Oct 21
STL12:25 pmLambert-St Louis
13h 50m
2 stops
DUB8:15 amDublin
Nov 5
DUB9:00 amDublin
19h 45m
2 stops
STL10:45 pmLambert-St Louis
$414
Find similar

Iberia flights from St. Louis to Dublin

Our best Iberia deals on St. Louis to Dublin flight tickets
Iberia
Oct 22
STL12:21 pmLambert-St Louis
15h 24m
1 stop
DUB9:45 amDublin
Nov 7
DUB2:05 pmDublin
14h 24m
1 stop
STL10:29 pmLambert-St Louis
$408
Find similar
Iberia
Sep 7
STL1:03 pmLambert-St Louis
11h 27m
1 stop
DUB6:30 amDublin
Sep 18
DUB9:30 amDublin
17h 36m
1 stop
STL9:06 pmLambert-St Louis
$478
Find similar
Iberia
Aug 18
STL10:08 amLambert-St Louis
17h 37m
1 stop
DUB9:45 amDublin
Aug 28
DUB12:40 pmDublin
13h 43m
1 stop
STL8:23 pmLambert-St Louis
$483
Find similar

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 $718.

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 $894 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 $704 on momondo.

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

As of July 2025, prices for St. Louis to Dublin flights are approximately 4% 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

Best Price Found

$345

Fastest flight time

10h 10m

Direct flights

None

Airports in Dublin

1 airport
The best one-way flight to Dublin from St. Louis in the past 72 hours is $345. The best round-trip flight deal from St. Louis to Dublin found on momondo in the last 72 hours is $381.
The fastest flight from St. Louis to Dublin takes 10h 10m
There are no direct flights from St. Louis to Dublin. Popular non-direct route for this connection is Lambert-St Louis Airport - Dublin Airport.
There is 1 airport near Dublin: Dublin (DUB)
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
British AirwaysPriceFrom $464Free CancellationRating
6.6
7,141 reviews
Search British Airways flights
Air CanadaPriceFrom $472Free CancellationRating
7.1
9,725 reviews
Search Air Canada flights
KLMPriceFrom $482Free CancellationRating
7.8
1,372 reviews
Search KLM flights
IberiaPriceFrom $482Free CancellationRating
7.0
2,835 reviews
Search Iberia flights
United AirlinesPriceFrom $501Free CancellationRating
7.4
8,861 reviews
Search United Airlines flights
DeltaPriceFrom $536Free CancellationRating
8.0
7,956 reviews
Search Delta flights
American AirlinesPriceFrom $563Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
LufthansaPriceFrom $627Free CancellationRating
6.8
7,210 reviews
Search Lufthansa flights
Aer LingusPriceFrom $736Free CancellationRating
7.1
1,165 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
Maynooth
Athlone
Dundalk
Malahide
Leixlip
Mullingar
Bray
Castleknock
Cavan
Kildare
Naas
Drogheda
Arklow
Enniscorthy
Wicklow
Tullamore
Slane
Thurles

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
Sun 7/20
Sun 7/27
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland