HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ireland

$315+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DUB
feb. 28 — mar. 71
sáb. 2/28
sáb. 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Ireland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 enero 29, 2026.

This Mytrip deal was found by Cheapflights users on 1/27. 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.
mié. 9/91:30 pm
STL
-
DUB
1 stop12h 15m
Multiple Airlines
vie. 9/186:05 am
DUB
-
STL
1 stop13h 20m
Multiple Airlines
Deal found 1/27$448
This Mytrip deal was found by Cheapflights users on 1/28. 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.
mié. 8/1912:10 pm
STL
-
DUB
1 stop13h 35m
Multiple Airlines
mié. 8/265:55 am
DUB
-
STL
1 stop13h 30m
Multiple Airlines
Deal found 1/28$454
This Mytrip deal was found by Cheapflights users on 1/28. 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.
mar. 8/1812:10 pm
STL
-
DUB
2 stops14h 05m
Multiple Airlines
mar. 8/255:55 am
DUB
-
STL
1 stop13h 30m
Multiple Airlines
Deal found 1/28$455
This United Airlines deal was found by Cheapflights users on 1/28. 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.
mié. 2/181:11 pm
STL
-
DUB
1 stop12h 59m
United Airlines
vie. 2/279:00 am
DUB
-
STL
2 stops41h 23m
United Airlines
Deal found 1/28$458
This Mytrip deal was found by Cheapflights users on 1/27. 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.
mar. 9/13:30 pm
STL
-
DUB
1 stop14h 05m
Multiple Airlines
mar. 9/89:20 am
DUB
-
STL
1 stop14h 57m
Multiple Airlines
Deal found 1/27$460
This United Airlines deal was found by Cheapflights users on 1/27. 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.
mié. 4/299:10 am
STL
-
DUB
1 stop18h 35m
United Airlines
mar. 5/59:50 am
DUB
-
STL
2 stops42h 40m
United Airlines
Deal found 1/27$462
This Mytrip deal was found by Cheapflights users on 1/28. 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.
lun. 9/73:30 pm
STL
-
DUB
1 stop14h 10m
Multiple Airlines
mar. 9/159:20 am
DUB
-
STL
1 stop14h 57m
Multiple Airlines
Deal found 1/28$464
This Ovago deal was found by Cheapflights users on 1/28. 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.
mié. 2/259:37 am
STL
-
DUB
2 stops18h 03m
British Airways
mié. 3/48:40 pm
DUB
-
STL
2 stops26h 33m
British Airways
Deal found 1/28$466
This American Airlines deal was found by Cheapflights users on 1/27. 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.
mié. 3/2511:59 am
STL
-
ORK
2 stops18h 11m
American Airlines
sáb. 4/411:35 am
ORK
-
STL
2 stops18h 23m
American Airlines
Deal found 1/27$565
This American Airlines deal was found by Cheapflights users on 1/27. 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.
mié. 9/92:45 pm
STL
-
SNN
2 stops14h 35m
American Airlines
mar. 9/227:30 am
SNN
-
STL
2 stops18h 33m
American Airlines
Deal found 1/27$584
This American Airlines deal was found by Cheapflights users on 1/27. 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.
mié. 2/113:20 pm
STL
-
ORK
2 stops13h 50m
American Airlines
lun. 2/1611:55 am
ORK
-
STL
2 stops17h 27m
American Airlines
Deal found 1/27$586
This United Airlines deal was found by Cheapflights users on 1/27. 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.
mié. 9/96:49 pm
STL
-
SNN
1 stop30h 41m
United Airlines
mar. 9/229:30 am
SNN
-
STL
1 stop11h 51m
United Airlines
Deal found 1/27$606

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 enero 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$458
(United Airlines)

One-way from

$315
(Ovago)

Popular in

June

Cheapest in

November

Average price

$639
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. 24% potential increase in price ($253 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 enero 29, 2026.
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

mié. 2/18

1:11 pm-8:10 am

1 stop12h 59m

Dublin

vie. 2/27

9:00 am-8:23 pm

2 stops41h 23m

$458

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mié. 4/29

9:10 am-9:45 am

1 stop18h 35m

Dublin

mar. 5/5

9:50 am-10:30 pm

2 stops42h 40m

$462

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

lun. 5/4

10:00 am-7:20 am

2 stops15h 20m

Dublin

mar. 5/12

9:50 am-12:06 pm

1 stop32h 16m

$480

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

jue. 2/26

9:55 am-8:10 am

1 stop16h 15m

Dublin

lun. 3/2

9:00 am-9:05 pm

2 stops18h 05m

$481

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

jue. 2/26

10:13 am-7:45 am

1 stop15h 32m

Dublin

mar. 3/3

8:50 am-7:39 pm

2 stops16h 49m

$484

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mar. 4/14

3:25 pm-7:55 am

1 stop10h 30m

Dublin

mié. 4/22

5:55 am-2:29 pm

2 stops14h 34m

$486

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mar. 4/14

2:29 pm-9:40 am

2 stops13h 11m

Dublin

mié. 4/22

8:30 pm-5:21 pm

2 stops26h 51m

$488

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

mié. 4/8

9:10 am-9:45 am

1 stop18h 35m

Dublin

jue. 4/16

11:35 am-8:35 am

1 stop27h 00m

$489

St. LouisCork

STL - ORK

STLORK

Lambert-St Louis

mié. 3/25

11:59 am-11:10 am

2 stops18h 11m

Cork

sáb. 4/4

11:35 am-11:58 pm

2 stops18h 23m

$565

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

lun. 5/25

8:15 am-7:30 am

1 stop17h 15m

Shannon

mié. 6/3

9:30 am-3:46 pm

1 stop12h 16m

$612

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 43 results
1
2
3
...
5

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 $722). 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 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 enero 29, 2026.
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
8,125 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Entertainment

7.8

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
8,125 reviews
Delta
7.9
Good
8,125 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Entertainment

7.8

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
9,215 reviews
Delta
7.9
Good
8,125 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Entertainment

7.8

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
11,199 reviews
Delta
7.9
Good
8,125 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Entertainment

7.8

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
10,666 reviews
Delta
7.9
Good
8,125 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Entertainment

7.8

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
3,099 reviews
Delta
7.9
Good
8,125 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Entertainment

7.8

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 12h 59m. United Airlines provides one of the quickest options available for as low as $458. The distance between St. Louis and Ireland is about 3909 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 American Airlines, with whom users have recently found tickets for as low as $319. However, be on the lookout for offers from Aer Lingus and Delta, 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, 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 $722). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Heathrow flights
Kansas City to Heathrow flights
St. Louis to Frankfurt flights
Kansas City to Dublin flights
St. Louis to Gatwick flights
St. Louis to Leonardo da Vinci/Fiumicino flights
St. Louis to Charles de Gaulle flights
St. Louis to Dublin flights
St. Louis to Orly flights
Kansas City to Charles de Gaulle flights
St. Louis to London City flights
Kansas City to Leonardo da Vinci/Fiumicino flights
St. Louis to Athens flights
St. Louis to Malpensa flights
Kansas City to Gatwick flights
Kansas City to Athens flights
St. Louis to Barcelona-El Prat flights
St. Louis to Linate flights
St. Louis to Stansted flights
St. Louis to Amsterdam flights
St. Louis to Istanbul flights
St. Louis to Madrid flights
St. Louis to Edinburgh flights
St. Louis to Zurich flights
St. Louis to Lisbon flights
Kansas City to London City flights
Kansas City to Vicenza flights
Kansas City to Amsterdam flights
Kansas City to Frankfurt flights
Kansas City to Stansted flights
Kansas City to Lisbon flights
Kansas City to Barcelona-El Prat flights
Kansas City to Madrid flights
Kansas City to Orly flights
Kansas City to Edinburgh flights
St. Louis to Sarajevo flights
Kansas City to Otopeni Intl flights
Springfield to Istanbul flights
St. Louis to Florence flights
St. Louis to Sabiha Gokcen flights
St. Louis to Keflavik Intl flights
St. Louis to Copenhagen flights
Springfield to Heathrow flights
St. Louis to Zagreb flights
Kansas City to Frederic Chopin flights
Kansas City to Glasgow Intl flights
Kansas City to Malpensa flights
Kansas City to Prague flights
St. Louis to Berlin flights
Kansas City to Oslo Gardermoen flights

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 enero 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$412Average$614FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$418Average$550FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$462Average$737FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$465Average$769FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$468Average$795FlexibilityNo cancel feeOn-time69%
IberiaCheapest$482Average$689FlexibilityNo cancel feeOn-time77%
DeltaCheapest$483Average$778FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$483Average$737FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$662Average$989FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.