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St. Louis

$314+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — STL
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
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 April 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$824
(TravelUp)

One-way from

$314
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$914
Provider with most accurate pricing for Dublin-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Dublin-Lambert-St Louis flights.
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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. 6% potential increase in price ($66 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 3, 2025.

This TravelUp deal was found by Cheapflights users on 4/2. 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.
Sat 5/1712:00 pmDUB - STL
1 stop11h 10mAir France
Sat 5/245:40 pmSTL - DUB
1 stop33h 05mAir France
Deal found 4/2$824
This Ticket deal was found by Cheapflights users on 4/2. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1712:00 pmDUB - STL
1 stop17h 26mMultiple Airlines
Sat 5/246:05 pmSTL - DUB
1 stop31h 40mMultiple Airlines
Deal found 4/2$832
This Justfly.com deal was found by Cheapflights users on 4/3. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/211:00 pmDUB - STL
1 stop13h 16mAer Lingus
Sat 11/2911:20 amSTL - DUB
1 stop11h 55mAer Lingus
Deal found 4/3$841
This Delta deal was found by Cheapflights users on 4/2. 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.
Sat 5/175:55 amDUB - STL
2 stops17h 15mDelta
Sat 5/246:00 amSTL - DUB
1 stop19h 45mDelta
Deal found 4/2$842
This American Airlines deal was found by Cheapflights users on 4/2. 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.
Mon 4/1412:40 pmDUB - STL
1 stop12h 49mAmerican Airlines
Sun 4/277:04 amSTL - DUB
1 stop20h 41mAmerican Airlines
Deal found 4/2$852
This KLM deal was found by Cheapflights users on 4/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1410:00 amDUB - STL
1 stop19h 26mKLM
Sun 6/110:05 amSTL - DUB
1 stop16h 40mKLM
Deal found 4/2$861
This Scandinavian Airlines deal was found by Cheapflights users on 4/2. 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 7/248:15 pmDUB - STL
2 stops30h 32mScandinavian Airlines
Mon 8/253:30 pmSTL - DUB
2 stops20h 45mScandinavian Airlines
Deal found 4/2$971
This EaseMyTrip deal was found by Cheapflights users on 4/3. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/139:15 amDUB - STL
2 stops20h 34mIberia
Wed 8/2011:05 amSTL - DUB
2 stops15h 25mIberia
Deal found 4/3$2,504
This British Airways deal was found by Cheapflights users on 4/2. 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.
Thu 6/268:50 amDUB - STL
2 stops16h 27mBritish Airways
Mon 8/48:01 pmSTL - DUB
2 stops14h 34mBritish Airways
Deal found 4/2$2,778
This EaseMyTrip deal was found by Cheapflights users on 4/3. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/139:50 amDUB - STL
2 stops16h 10mAir Canada
Fri 8/2912:35 pmSTL - DUB
2 stops13h 10mAir Canada
Deal found 4/3$2,867
This United Airlines deal was found by Cheapflights users on 4/2. 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.
Mon 8/119:20 amDUB - STL
1 stop16h 40mUnited Airlines
Sun 8/241:30 pmSTL - DUB
1 stop12h 15mUnited Airlines
Deal found 4/2$3,029
This Lufthansa deal was found by Cheapflights users on 4/2. 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.
Sun 8/105:55 amDUB - STL
1 stop13h 35mLufthansa
Fri 8/223:30 pmSTL - DUB
1 stop14h 00mLufthansa
Deal found 4/2$3,152

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 April 3, 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

Sat 5/17

12:00 pm-5:10 pm

1 stop11h 10m

Lambert-St Louis

Sat 5/24

5:40 pm-8:45 am

1 stop33h 05m

$824

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 5/17

12:00 pm-11:26 pm

1 stop17h 26m

Lambert-St Louis

Sat 5/24

6:05 pm-7:45 am

1 stop31h 40m

$832

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 5/17

5:55 am-5:10 pm

2 stops17h 15m

Lambert-St Louis

Sat 5/24

6:00 am-7:45 am

1 stop19h 45m

$842

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 4/14

12:40 pm-7:29 pm

1 stop12h 49m

Lambert-St Louis

Sun 4/27

7:04 am-9:45 am

1 stop20h 41m

$852

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 5/14

10:00 am-11:26 pm

1 stop19h 26m

Lambert-St Louis

Sun 6/1

10:05 am-8:45 am

1 stop16h 40m

$861

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 7/24

8:15 pm-8:47 pm

2 stops30h 32m

Lambert-St Louis

Mon 8/25

3:30 pm-6:15 pm

2 stops20h 45m

$971

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 8/13

4:40 pm-9:49 pm

1 stop11h 09m

Lambert-St Louis

Mon 8/18

6:38 am-8:10 am

1 stop19h 32m

$2,242

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 8/13

9:15 am-11:49 pm

2 stops20h 34m

Lambert-St Louis

Wed 8/20

11:05 am-8:30 am

2 stops15h 25m

$2,504

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 6/26

8:50 am-7:17 pm

2 stops16h 27m

Lambert-St Louis

Mon 8/4

8:01 pm-4:35 pm

2 stops14h 34m

$2,778

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 8/13

9:50 am-8:00 pm

2 stops16h 10m

Lambert-St Louis

Fri 8/29

12:35 pm-7:45 am

2 stops13h 10m

$2,867

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 17 results
1
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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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 April 3, 2025.
Delta
8.0
Very good
7,897 reviews

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,427 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,618 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 Aer Lingus, with whom users have recently found tickets for as low as $616. However, be on the lookout for offers from WestJet and United Airlines, 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 Ireland?

Book flights to Ireland if you plan to visit one of these locations
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
Chesterfield

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Alternative routes for Ireland to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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