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St. Louis

$382+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — STL
Mar 8 — Mar 151
Sat 3/8
Sat 3/15
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 March 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$753
(Mytrip)

One-way from

$382
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$843
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. 7% potential increase in price ($79 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 3, 2025.

This Mytrip deal was found by Cheapflights users on 3/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/164:40 pmDUB - STL
2 stops33h 30mMultiple Airlines
Wed 4/2312:15 pmSTL - DUB
2 stops16h 00mMultiple Airlines
Deal found 3/2$753
This EaseMyTrip deal was found by Cheapflights users on 3/2. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/237:05 pmDUB - STL
2 stops34h 31mScandinavian Airlines
Mon 4/284:05 pmSTL - DUB
2 stops37h 45mScandinavian Airlines
Deal found 3/2$756
This TravelUp deal was found by Cheapflights users on 3/3. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2411:00 amDUB - STL
1 stop18h 36mAir France
Mon 4/285:37 pmSTL - DUB
2 stops15h 23mAir France
Deal found 3/3$794
This EaseMyTrip deal was found by Cheapflights users on 3/2. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2312:40 pmDUB - STL
1 stop12h 49mFinnair
Mon 4/2811:21 amSTL - DUB
1 stop16h 24mFinnair
Deal found 3/2$797
This KLM deal was found by Cheapflights users on 3/2. 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.
Sun 3/95:55 amDUB - STL
2 stops15h 53mKLM
Mon 3/247:10 amSTL - DUB
1 stop21h 35mKLM
Deal found 3/2$807
This Delta deal was found by Cheapflights users on 3/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/239:10 amDUB - STL
2 stops18h 26mDelta
Mon 4/285:37 pmSTL - DUB
2 stops15h 23mDelta
Deal found 3/3$814
This American Airlines deal was found by Cheapflights users on 3/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/102:05 pmDUB - STL
2 stops13h 13mAmerican Airlines
Sun 3/238:59 amSTL - DUB
2 stops18h 41mAmerican Airlines
Deal found 3/3$816
This oojo deal was found by Cheapflights users on 3/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2312:40 pmDUB - STL
1 stop15h 48mIberia
Mon 4/282:03 pmSTL - DUB
1 stop10h 27mIberia
Deal found 3/3$820
This United Airlines deal was found by Cheapflights users on 3/2. 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.
Wed 4/239:50 amDUB - STL
3 stops35h 57mUnited Airlines
Mon 4/2811:00 amSTL - DUB
2 stops16h 45mUnited Airlines
Deal found 3/2$888
This oojo deal was found by Cheapflights users on 3/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/2611:35 amDUB - STL
1 stop13h 39mAer Lingus
Mon 8/47:23 amSTL - DUB
1 stop15h 47mAer Lingus
Deal found 3/3$2,180
This British Airways deal was found by Cheapflights users on 3/3. 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 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 24mBritish Airways
Mon 8/47:59 pmSTL - DUB
2 stops14h 36mBritish Airways
Deal found 3/3$2,675

Find flights from Ireland to St. Louis within your budget

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 March 3, 2025.

Fly from

Ireland

Fly to

St. Louis

Route

Depart

Return

Price

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 4/16

4:40 pm-8:10 pm

2 stops33h 30m

Lambert-St Louis

Wed 4/23

12:15 pm-10:15 am

2 stops16h 00m

$753

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 4/23

7:05 pm-11:36 pm

2 stops34h 31m

Lambert-St Louis

Mon 4/28

4:05 pm-11:50 am

2 stops37h 45m

$756

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 4/24

11:00 am-11:36 pm

1 stop18h 36m

Lambert-St Louis

Mon 4/28

5:37 pm-3:00 pm

2 stops15h 23m

$794

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 4/23

12:40 pm-7:29 pm

1 stop12h 49m

Lambert-St Louis

Mon 4/28

11:21 am-9:45 am

1 stop16h 24m

$797

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 4/23

9:10 am-9:36 pm

2 stops18h 26m

Lambert-St Louis

Mon 4/28

5:37 pm-3:00 pm

2 stops15h 23m

$814

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 4/23

12:40 pm-10:28 pm

1 stop15h 48m

Lambert-St Louis

Mon 4/28

2:03 pm-6:30 am

1 stop10h 27m

$820

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 4/10

11:45 am-9:24 pm

1 stop15h 39m

Lambert-St Louis

Wed 4/23

6:15 am-6:30 am

1 stop18h 15m

$829

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 4/23

9:50 am-3:47 pm

3 stops35h 57m

Lambert-St Louis

Mon 4/28

11:00 am-9:45 am

2 stops16h 45m

$888

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 6/26

11:35 am-7:14 pm

1 stop13h 39m

Lambert-St Louis

Mon 8/4

7:23 am-5:10 am

1 stop15h 47m

$2,180

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 6/26

8:50 am-7:14 pm

2 stops16h 24m

Lambert-St Louis

Mon 8/4

7:59 pm-4:35 pm

2 stops14h 36m

$2,675

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 16 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.

Travel insights for flights from Ireland to St. Louis

Get recent, data-driven insights about flights from Ireland to St. Louis including ideal travel times, pricing trends, and more.

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 March 3, 2025.
Read through reviews of airlines operating flights from Ireland to St. Louis, such as Delta, Finnair and Air France. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,068 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

8.0

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
8,068 reviews
Delta
8.0
Very good
8,068 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

8.0

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
1,271 reviews
Delta
8.0
Very good
8,068 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

8.0

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
1,437 reviews
Delta
8.0
Very good
8,068 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

8.0

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
8,679 reviews
Delta
8.0
Very good
8,068 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

8.0

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

Scandinavian Airlines
7.3
Good
1,314 reviews
Delta
8.0
Very good
8,068 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

8.0

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 WestJet, with whom users have recently found tickets for as low as $497. However, be on the lookout for offers from Aer Lingus and Finnair, 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
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
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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