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Ireland

$336+ 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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DUB
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:35 pmSTL - DUB
1 stop31h 35mLufthansa
Wed 1/149:30 amDUB - STL
1 stop20h 29mLufthansa
Deal found 12/17$436
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.
Mon 12/296:30 amSTL - DUB
1 stop19h 40mUnited Airlines
Wed 1/149:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 12/17$465
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2911:41 amSTL - DUB
2 stops14h 59mMultiple Airlines
Wed 1/1411:30 amDUB - STL
2 stops17h 42mMultiple Airlines
Deal found 12/17$476
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.
Wed 12/1712:55 pmSTL - DUB
1 stop15h 25mUnited Airlines
Wed 12/2410:40 amDUB - STL
1 stop11h 47mUnited Airlines
Deal found 12/16$726
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 12/262:06 pmSTL - DUB
2 stops12h 39mAmerican Airlines
Sun 12/284:00 pmDUB - STL
2 stops13h 44mAmerican Airlines
Deal found 12/16$840
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:41 amSTL - DUB
1 stop13h 29mMultiple Airlines
Sun 12/2811:30 amDUB - STL
1 stop15h 41mMultiple Airlines
Deal found 12/16$866
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:16 amSTL - DUB
1 stop19h 54mMultiple Airlines
Thu 1/111:30 amDUB - STL
1 stop15h 21mMultiple Airlines
Deal found 12/17$1,039
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/215:30 amSTL - DUB
1 stop17h 35mAer Lingus
Tue 12/2311:30 amDUB - STL
1 stop11h 16mAer Lingus
Deal found 12/17$1,159
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 12/262:06 pmSTL - DUB
2 stops12h 39mAmerican Airlines
Thu 1/12:20 pmDUB - STL
2 stops15h 24mAmerican Airlines
Deal found 12/16$1,161

Find 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 December 18, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$432
(Kiwi.com)

One-way from

$336
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$853
Provider with most accurate pricing for Lambert-St Louis-Dublin flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Dublin flights.
Search Deals
From Lambert-St Louis to Ireland
Search Deals
One-way flight from Lambert-St Louis to Ireland
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($252 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 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 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 December 18, 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

Thu 1/29

6:30 am-8:10 am

1 stop19h 40m

Dublin

Mon 2/2

9:00 am-7:27 pm

2 stops40h 27m

$456

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 1/22

9:57 am-7:30 am

2 stops15h 33m

Dublin

Mon 1/26

9:00 am-10:00 pm

2 stops43h 00m

$460

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 3/6

4:05 pm-6:10 am

1 stop32h 05m

Dublin

Sun 3/15

8:00 am-3:29 pm

1 stop12h 29m

$471

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 1/12

1:15 pm-7:30 am

2 stops12h 15m

Dublin

Sun 1/18

9:00 am-3:29 pm

1 stop12h 29m

$473

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 1/14

7:00 am-8:10 am

2 stops19h 10m

Dublin

Sun 1/18

9:00 am-3:29 pm

1 stop12h 29m

$473

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 1/11

11:22 am-7:10 am

2 stops13h 48m

Dublin

Wed 1/21

9:00 am-3:29 pm

1 stop12h 29m

$475

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 1/15

7:00 am-7:10 am

2 stops18h 10m

Dublin

Sun 1/18

9:00 am-3:29 pm

1 stop12h 29m

$475

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 1/12

1:15 pm-8:10 am

1 stop12h 55m

Dublin

Tue 1/20

9:30 am-11:59 pm

1 stop20h 29m

$484

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 3/20

6:00 am-7:45 am

1 stop20h 45m

Dublin

Thu 3/26

10:45 am-8:43 pm

1 stop14h 58m

$484

St. LouisCork

STL - ORK

STLORK

Lambert-St Louis

Thu 1/29

3:37 pm-3:25 pm

2 stops17h 48m

Cork

Thu 2/5

11:55 am-10:59 pm

2 stops17h 04m

$485

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 31 results
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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, October is the cheapest month in which you can book a flight from St. Louis to Ireland (average of $397). Flying from St. Louis to Ireland in June is currently the most expensive (average of $721). 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 December 18, 2025.

It’s typically best to fly out from St. Louis to Ireland in the evening. Doing so could potentially save you 29% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 December 18, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American 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
7.9
Good
8,005 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,005 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,091 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,054 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,534 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Iberia
7.0
Good
3,052 reviews
Delta
7.9
Good
8,005 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

  • How long is the flight from St. Louis to Ireland?

    A quick flight from St. Louis to Ireland can take about 17h 40m. United Airlines provides one of the quickest options available for as low as $683. The distance between St. Louis and Ireland is about 3824 mi. This flight may include one or multiple stops.

  • 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 $324. However, be on the lookout for offers from United Airlines and American Airlines, 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 - Cork or Lambert-St Louis - Shannon, 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, October is the cheapest month in which you can book a flight from St. Louis to Ireland (average of $397). Flying from St. Louis to Ireland in June is currently the most expensive (average of $721). 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$412Average$571FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$462Average$769FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$463Average$629FlexibilityNo cancel feeOn-time70%
IberiaCheapest$482Average$691FlexibilityNo cancel feeOn-time77%
DeltaCheapest$483Average$794FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$494Average$861FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$498Average$812FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$548Average$846FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$759Average$985FlexibilityNo cancel feeOn-timeN/A

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