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St. Louis

$596+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — STL
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Ireland to St. Louis

Best flights from Ireland to St. Louis
Discover carefully curated flight deals from Ireland to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Fri 1/305:10 amDUB - STL
1 stop14h 45mLufthansa
Fri 2/61:15 pmSTL - DUB
1 stop12h 55mLufthansa
Deal found 12/16$926
This Kiwi.com deal was found by Cheapflights users on 12/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/235:10 amDUB - STL
1 stop14h 45mMultiple Airlines
Thu 2/511:22 amSTL - DUB
1 stop14h 08mMultiple Airlines
Deal found 12/18$928
This American Airlines deal was found by Cheapflights users on 12/16. 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 3/510:30 amDUB - STL
2 stops18h 58mAmerican Airlines
Mon 3/92:32 pmSTL - DUB
2 stops21h 33mAmerican Airlines
Deal found 12/16$952
This British Airways deal was found by Cheapflights users on 12/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/238:45 amDUB - STL
2 stops15h 49mBritish Airways
Thu 2/51:35 pmSTL - DUB
2 stops15h 40mBritish Airways
Deal found 12/16$954
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/59:30 amDUB - STL
1 stop13h 30mUnited Airlines
Mon 3/91:14 pmSTL - DUB
1 stop13h 56mUnited Airlines
Deal found 12/17$972
This Gotogate deal was found by Cheapflights users on 12/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/235:10 amDUB - STL
2 stops24h 49mLufthansa
Thu 2/56:40 pmSTL - DUB
2 stops16h 30mLufthansa
Deal found 12/18$956
This American Airlines deal was found by Cheapflights users on 12/16. 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.
Fri 1/231:40 pmDUB - STL
2 stops31h 56mAmerican Airlines
Thu 2/59:33 amSTL - DUB
1 stop17h 07mAmerican Airlines
Deal found 12/16$970
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/239:30 amDUB - STL
2 stops15h 57mUnited Airlines
Thu 2/511:20 amSTL - DUB
2 stops14h 10mUnited Airlines
Deal found 12/16$973

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$833
(Kiwi.com)

One-way from

$596
(Booking.com)

Popular in

May

Cheapest in

February

Average price

$1,062
Provider with most accurate pricing for Dublin-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dublin-Lambert-St Louis flights.
Search Deals
From Ireland to Lambert-St Louis
Search Deals
One-way flight from Ireland to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 2025.
Use the filters below to find and compare flights from Ireland to St. Louis that are best for you.

Fly from

Ireland

Fly to

St. Louis

Route

Depart

Return

Price

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 1/30

5:10 am-1:55 pm

1 stop14h 45m

Lambert-St Louis

Fri 2/6

1:15 pm-8:10 am

1 stop12h 55m

$926

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 1/23

5:10 am-1:55 pm

1 stop14h 45m

Lambert-St Louis

Thu 2/5

11:22 am-7:30 am

1 stop14h 08m

$928

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 3/5

10:30 am-11:28 pm

2 stops18h 58m

Lambert-St Louis

Mon 3/9

2:32 pm-5:05 pm

2 stops21h 33m

$952

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 1/23

8:45 am-6:34 pm

2 stops15h 49m

Lambert-St Louis

Thu 2/5

1:35 pm-11:15 am

2 stops15h 40m

$954

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 1/23

5:10 am-11:59 pm

2 stops24h 49m

Lambert-St Louis

Thu 2/5

6:40 pm-5:10 pm

2 stops16h 30m

$956

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 1/23

1:40 pm-3:36 pm

2 stops31h 56m

Lambert-St Louis

Thu 2/5

9:33 am-8:40 am

1 stop17h 07m

$970

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 3/5

9:30 am-5:00 pm

1 stop13h 30m

Lambert-St Louis

Mon 3/9

1:14 pm-8:10 am

1 stop13h 56m

$972

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 1/23

9:30 am-7:27 pm

2 stops15h 57m

Lambert-St Louis

Thu 2/5

11:20 am-7:30 am

2 stops14h 10m

$973

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 5/14

7:00 pm-7:30 pm

1 stop30h 30m

$596

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 5/14

6:20 pm-12:04 am

3 stops35h 44m

$603

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 18 results
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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

What is the cheapest month to book a flight from Ireland to St. Louis?

Currently, September is the cheapest month in which you can book a flight from Ireland to St. Louis (average of $628). Flying from Ireland to St. Louis in January is currently the most expensive (average of $1,117). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 14h 45m. Lufthansa provides one of the quickest options available for as low as $926. 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.

  • What is the cheapest month to book a flight from Ireland to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from Ireland to St. Louis (average of $628). Flying from Ireland to St. Louis in January is currently the most expensive (average of $1,117). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Fairview Heights
Maryland Heights
Collinsville
Swansea
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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