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St. Louis

$444+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — STL
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
1 adult, Economy
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Cheap 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 julio 31, 2025.

Round-trip from

$619
(TravelUp)

One-way from

$444
(Kiwi.com)

Popular in

July

Cheapest in

August

Average price

$1,134
From Ireland to Lambert-St Louis
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One-way flight from Ireland to Lambert-St Louis
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Highest demand for flights based on searches. 4% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 julio 31, 2025.

This TravelUp deal was found by Cheapflights users on 7/30. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/74:40 pmDUB - STL
1 stop13h 08mAer Lingus
jue. 9/186:00 amSTL - DUB
1 stop20h 10mAer Lingus
Deal found 7/30$619
This Scandinavian Airlines deal was found by Cheapflights users on 7/30. 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.
jue. 12/412:30 pmDUB - STL
2 stops38h 19mScandinavian Airlines
lun. 12/81:30 pmSTL - DUB
2 stops40h 15mScandinavian Airlines
Deal found 7/30$843
This Lufthansa deal was found by Cheapflights users on 7/31. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/215:10 amDUB - STL
1 stop14h 45mLufthansa
sáb. 11/2912:31 pmSTL - DUB
1 stop13h 39mLufthansa
Deal found 7/31$911
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/35:55 amDUB - STL
2 stops23h 07mDelta
mar. 11/115:45 pmSTL - DUB
2 stops16h 00mDelta
Deal found 7/30$922
This United Airlines deal was found by Cheapflights users on 7/30. 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.
lun. 11/39:00 amDUB - STL
1 stop12h 29mUnited Airlines
mar. 11/1111:20 amSTL - DUB
2 stops16h 35mUnited Airlines
Deal found 7/30$924
This Mytrip deal was found by Cheapflights users on 7/30. 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.
dom. 9/711:30 amDUB - STL
1 stop14h 08mMultiple Airlines
jue. 9/1812:05 pmSTL - DUB
3 stops30h 00mMultiple Airlines
Deal found 7/30$931
This British Airways deal was found by Cheapflights users on 7/30. 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.
sáb. 9/1310:30 amDUB - STL
2 stops16h 02mBritish Airways
sáb. 9/205:25 pmSTL - DUB
2 stops15h 00mBritish Airways
Deal found 7/30$987

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 julio 31, 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

dom. 9/7

4:40 pm-11:48 pm

1 stop13h 08m

Lambert-St Louis

jue. 9/18

6:00 am-8:10 am

1 stop20h 10m

$619

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

jue. 12/4

12:30 pm-8:49 pm

2 stops38h 19m

Lambert-St Louis

lun. 12/8

1:30 pm-11:45 am

2 stops40h 15m

$843

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

vie. 11/21

5:10 am-1:55 pm

1 stop14h 45m

Lambert-St Louis

sáb. 11/29

12:31 pm-8:10 am

1 stop13h 39m

$911

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

lun. 11/3

5:55 am-11:02 pm

2 stops23h 07m

Lambert-St Louis

mar. 11/11

5:45 pm-3:45 pm

2 stops16h 00m

$922

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

lun. 11/3

9:00 am-3:29 pm

1 stop12h 29m

Lambert-St Louis

mar. 11/11

11:20 am-9:55 am

2 stops16h 35m

$924

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

dom. 9/7

11:30 am-7:38 pm

1 stop14h 08m

Lambert-St Louis

jue. 9/18

12:05 pm-12:05 am

3 stops30h 00m

$931

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

sáb. 9/13

10:30 am-8:32 pm

2 stops16h 02m

Lambert-St Louis

sáb. 9/20

5:25 pm-2:25 pm

2 stops15h 00m

$987

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

lun. 9/8

11:30 am-6:36 pm

3 stops37h 06m

$444

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

lun. 9/8

11:30 am-11:24 pm

2 stops17h 54m

$504

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

jue. 1/1

11:30 am-5:58 pm

1 stop12h 28m

$684

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 13 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, August is the cheapest month in which you can book a flight from Ireland to St. Louis (average of $311). Flying from Ireland to St. Louis in March is currently the most expensive (average of $356). 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.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated julio 31, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and Scandinavian Airlines from Ireland to St. Louis. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Scandinavian Airlines
7.4
Good
1,457 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
WestJet
7.2
Good
2,978 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

  • What are the cheapest airlines to fly from Ireland to St. Louis one-way?

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $504. However, be on the lookout for offers from Aer Lingus and Lufthansa, as they are both options that can get you from Ireland to St. Louis for a low price.

  • 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, August is the cheapest month in which you can book a flight from Ireland to St. Louis (average of $311). Flying from Ireland to St. Louis in March is currently the most expensive (average of $356). 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
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Festus
Farmington

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