St. Louis

$454+ Cheap flights from Ireland to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — STL
Jul 21 — Jul 281
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ireland to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ireland to St. Louis

Cheapest flights from Ireland to St. Louis
Explore the most affordable flight options available from Ireland to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 21, 2026.

This Scandinavian Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:05 pm
DUB
-
STL
2 stops34h 34m
Scandinavian Airlines
Sun 12/611:51 am
STL
-
DUB
2 stops24h 29m
Scandinavian Airlines
Deal found 6/19$936
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:35 pm
DUB
-
STL
2 stops55h 04m
Multiple Airlines
Thu 10/89:47 am
STL
-
DUB
1 stop13h 23m
Multiple Airlines
Deal found 6/17$964
This Mytrip deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/69:40 am
DUB
-
STL
2 stops34h 22m
Multiple Airlines
Mon 8/178:55 am
STL
-
DUB
3 stops28h 05m
Multiple Airlines
Deal found 6/17$971
This Flighttix deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:40 pm
DUB
-
STL
1 stop26h 44m
Iberia
Thu 10/83:33 pm
STL
-
DUB
1 stop12h 12m
Iberia
Deal found 6/17$977
This American Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:30 am
DUB
-
STL
1 stop28h 47m
American Airlines
Sun 12/66:00 am
STL
-
DUB
1 stop20h 30m
American Airlines
Deal found 6/18$978
This American Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:30 am
DUB
-
STL
1 stop20h 44m
American Airlines
Sun 9/68:07 pm
STL
-
DUB
1 stop9h 43m
American Airlines
Deal found 6/20$982

Find flight deals from Ireland to St. Louis

Keep the following information in mind while searching for Ireland to St. Louis flight deals. Data was last updated June 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$936
(Scandinavian Airlines)

One-way from

$454
(Kiwi.com)

Popular in

February

Cheapest in

September

Average price

$1,174
Provider with most accurate pricing for Dublin-Lambert-St Louis flight deals.
Provider most trusted by Cheapflights users for Dublin-Lambert-St Louis flights.
From Ireland to Lambert-St Louis
One-way flight from Ireland to Lambert-St Louis
Highest demand for flights based on searches. 3% potential increase in price ($41 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($17 potential savings vs. average RT price).
Average for round-trip flights in June 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ireland to St. Louis 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, Cheapflights users made 2,558,603 searches. Data last updated June 21, 2026.
Use the filters below to find and compare flights from Ireland to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 12/3

7:05 pm-11:39 pm

2 stops34h 34m

Lambert-St Louis

Sun 12/6

11:51 am-6:20 pm

2 stops24h 29m

$937

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 9/2

9:30 am-12:14 am

1 stop20h 44m

Lambert-St Louis

Sun 9/6

8:07 pm-11:50 am

1 stop9h 43m

$982

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 9/22

5:55 am-8:35 pm

2 stops20h 40m

Lambert-St Louis

Thu 10/8

5:45 pm-3:25 pm

2 stops15h 40m

$1,004

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 7/23

9:30 am-12:16 am

1 stop20h 46m

Lambert-St Louis

Thu 7/30

5:58 pm-11:50 am

1 stop11h 52m

$1,051

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 8/15

1:45 pm-11:34 pm

1 stop15h 49m

Lambert-St Louis

Fri 9/4

8:07 pm-11:50 am

1 stop9h 43m

$1,105
Quickest round-trip

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 9/2

9:20 am-2:02 pm

1 stop10h 42m

Lambert-St Louis

Sun 9/6

12:59 pm-7:45 am

2 stops12h 46m

$1,114

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 8/3

7:15 pm-6:42 pm

3 stops29h 27m

Lambert-St Louis

Mon 8/10

2:40 pm-8:15 am

1 stop11h 35m

$1,159

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 8/3

8:55 am-11:26 pm

2 stops20h 31m

Lambert-St Louis

Mon 8/10

6:30 am-10:00 am

1 stop21h 30m

$1,169

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 8/15

5:55 am-5:14 pm

2 stops17h 19m

Lambert-St Louis

Fri 9/4

11:00 am-10:00 am

2 stops17h 00m

$1,178
Cheapest one-way

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 8/1

12:15 pm-8:57 am

3 stops50h 42m

$461

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/18

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Best time to book a flight from Ireland to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Ireland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ireland to St. Louis
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Ireland to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to St. Louis from Ireland?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Ireland to St. Louis. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

  • How long is the flight from Ireland to St. Louis?

    A quick flight from Ireland to St. Louis can take about 20h 40m. Scandinavian Airlines provides one of the quickest options available for as low as $1,004. The distance from Ireland to St. Louis is about 3909 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Ireland to St. Louis that include hotel bookings?

    Yes. In addition to deals on Ireland to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ireland to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to St. Louis.

  • Can I find deals for business class flights from Ireland to St. Louis?

    Yes. Cheapflights offers flight deals from Ireland to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.