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Ireland

$398+ Cheap flights from St. Louis (STL) to Ireland

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DUB
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
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Cheap flight deals from St. Louis to Ireland

Keep the following information in mind while searching for St. Louis to Ireland flight deals. Data was last updated August 1, 2025.

Round-trip from

$476
(Iberia)

One-way from

$398
(Ovago)

Popular in

June

Cheapest in

February

Average price

$782
From Lambert-St Louis to Ireland
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One-way flight from Lambert-St Louis to Ireland
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Highest demand for flights based on searches. 20% potential increase in price ($234 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from St. Louis to Ireland

Cheapest flights from St. Louis to Ireland
Explore the most affordable flight options available from St. Louis to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/511:51 amSTL - DUB
2 stops15h 04mIberia
Sun 11/912:55 pmDUB - STL
1 stop15h 34mIberia
Deal found 7/30$476
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/11:26 pmSTL - DUB
1 stop13h 19mKLM
Tue 9/91:15 pmDUB - STL
2 stops14h 47mKLM
Deal found 7/31$487
This Gurufare 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/211:50 amSTL - DUB
1 stop16h 05mLufthansa
Wed 12/105:10 amDUB - STL
1 stop14h 45mLufthansa
Deal found 7/30$495
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/195:11 pmSTL - DUB
2 stops15h 49mDelta
Mon 8/259:10 amDUB - STL
2 stops18h 52mDelta
Deal found 7/31$504
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/51:10 pmSTL - DUB
1 stop15h 10mUnited Airlines
Sun 11/99:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 7/31$507
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/511:51 amSTL - DUB
2 stops15h 04mMultiple Airlines
Sun 11/910:45 amDUB - STL
2 stops17h 44mMultiple Airlines
Deal found 7/31$511
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/251:30 pmSTL - DUB
1 stop12h 15mAir Canada
Sun 9/79:50 amDUB - STL
2 stops40h 07mAir Canada
Deal found 7/31$523
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.
Wed 8/276:35 amSTL - SNN
1 stop18h 55mUnited Airlines
Wed 9/39:30 amSNN - STL
1 stop10h 49mUnited Airlines
Deal found 7/30$542
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:27 amSTL - DUB
1 stop17h 03mAmerican Airlines
Wed 9/179:30 amDUB - STL
2 stops15h 02mAmerican Airlines
Deal found 7/30$547
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/152:11 pmSTL - SNN
2 stops15h 09mAmerican Airlines
Wed 9/247:40 amSNN - STL
2 stops16h 52mAmerican Airlines
Deal found 7/31$559
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/144:34 pmSTL - DUB
2 stops13h 21mBritish Airways
Sat 10/258:35 amDUB - STL
2 stops19h 31mBritish Airways
Deal found 7/30$568
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/148:03 pmSTL - ORK
2 stops17h 47mAmerican Airlines
Sun 9/217:20 amORK - STL
2 stops18h 00mAmerican Airlines
Deal found 7/31$688

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Ireland 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 August 1, 2025.
Use the filters below to find and compare flights from St. Louis to Ireland that are best for you.

Fly from

St. Louis

Fly to

Ireland

Route

Depart

Return

Price

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 11/5

11:51 am-8:55 am

2 stops15h 04m

Dublin

Sun 11/9

12:55 pm-10:29 pm

1 stop15h 34m

$476

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 9/1

1:26 pm-8:45 am

1 stop13h 19m

Dublin

Tue 9/9

1:15 pm-10:02 pm

2 stops14h 47m

$487

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/2

11:50 am-9:55 am

1 stop16h 05m

Dublin

Wed 12/10

5:10 am-1:55 pm

1 stop14h 45m

$495

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/19

5:11 pm-3:00 pm

2 stops15h 49m

Dublin

Mon 8/25

9:10 am-10:02 pm

2 stops18h 52m

$504

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 11/5

1:10 pm-10:20 am

1 stop15h 10m

Dublin

Sun 11/9

9:00 am-3:29 pm

1 stop12h 29m

$507

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 11/5

11:51 am-8:55 am

2 stops15h 04m

Dublin

Sun 11/9

10:45 am-10:29 pm

2 stops17h 44m

$511

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 8/20

1:30 pm-8:15 am

2 stops36h 45m

Dublin

Tue 8/26

9:50 am-8:00 pm

2 stops40h 10m

$513

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 8/27

6:35 am-7:30 am

1 stop18h 55m

Shannon

Wed 9/3

9:30 am-2:19 pm

1 stop10h 49m

$542

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 9/3

6:27 am-5:30 am

1 stop17h 03m

Dublin

Wed 9/17

9:30 am-6:32 pm

2 stops15h 02m

$547

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 9/15

2:11 pm-11:20 am

2 stops15h 09m

Shannon

Wed 9/24

7:40 am-6:32 pm

2 stops16h 52m

$559

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 25 results
1
2
3

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

Have a flexible travel schedule? Discover the best time to fly to Ireland from St. Louis 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 St. Louis to Ireland

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

Currently, November is the cheapest month in which you can book a flight from St. Louis to Ireland (average of $509). Flying from St. Louis to Ireland in June is currently the most expensive (average of $924). 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.

What is the cheapest time of day to fly from STL to IE?

Find hourly flight availability from St. Louis to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 1, 2025.

When flying from St. Louis to Ireland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. 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 Ireland. Reviews last updated August 1, 2025.
Get a feel of what it's like to fly with Delta, KLM, and United Airlines from St. Louis to Ireland by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,851 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Ireland. 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 from for flights from St. Louis to Ireland?

    For a flight from St. Louis to Ireland, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

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

    The cheapest airline one-way is Aer Lingus, with whom users have recently found tickets for as low as $398. However, be on the lookout for offers from American Airlines and Air Canada, as they are both options that can get you from St. Louis to Ireland for a low price.

  • What are the most popular routes from St. Louis to Ireland?

    While some choose either Lambert-St Louis - Shannon or Lambert-St Louis - Cork, Lambert-St Louis - Dublin is the most popular route from St. Louis to Ireland.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Ireland 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 St. Louis to Ireland?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Ireland (average of $509). Flying from St. Louis to Ireland in June is currently the most expensive (average of $924). 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

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Alternative routes for St. Louis to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from St. Louis to Ireland

Discover the top 9 airlines that operate flights from St. Louis to Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$383Average$632FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$462Average$788FlexibilityNo cancel feeOn-time67%
KLMCheapest$482Average$557FlexibilityNo cancel feeOn-time75%
IberiaCheapest$482Average$667FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$495Average$943FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$518Average$824FlexibilityNo cancel feeOn-time71%
DeltaCheapest$536Average$918FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$627Average$851FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$736Average$968FlexibilityNo cancel feeOn-timeN/A

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