HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ireland

$355+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DUB
Apr 29 — May 61
Tue 4/29
Tue 5/6
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

Keep the following information in mind while searching for St. Louis to Ireland flight deals. Data was last updated April 24, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$537
(United Airlines)

One-way from

$355
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$945
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. 21% potential increase in price ($250 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 April 2025
Search Deals

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 April 24, 2025.

This United Airlines deal was found by Cheapflights users on 4/23. 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.
Sun 8/171:30 pmSTL - DUB
1 stop12h 15mUnited Airlines
Tue 8/269:20 amDUB - STL
2 stops31h 18mUnited Airlines
Deal found 4/23$537
This Air Canada deal was found by Cheapflights users on 4/23. 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.
Sun 8/179:09 amSTL - DUB
2 stops16h 36mAir Canada
Tue 8/269:20 amDUB - STL
2 stops33h 05mAir Canada
Deal found 4/23$542
This United deal was found by Cheapflights users on 4/23. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/179:09 amSTL - DUB
2 stops16h 36mMultiple Airlines
Tue 8/269:20 amDUB - STL
1 stop16h 40mMultiple Airlines
Deal found 4/23$555
This Delta deal was found by Cheapflights users on 4/22. 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 7/237:20 amSTL - SNN
2 stops21h 50mDelta
Wed 7/301:05 pmSNN - STL
2 stops13h 25mDelta
Deal found 4/22$615
This United Airlines deal was found by Cheapflights users on 4/23. 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 8/136:33 amSTL - SNN
1 stop18h 57mUnited Airlines
Sat 8/239:30 amSNN - STL
1 stop15h 57mUnited Airlines
Deal found 4/23$626
This KLM deal was found by Cheapflights users on 4/23. 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 7/231:30 pmSTL - SNN
2 stops15h 40mKLM
Wed 7/301:05 pmSNN - STL
2 stops16h 34mKLM
Deal found 4/23$650
This Cheapflightsfares deal was found by Cheapflights users on 4/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/151:54 pmSTL - DUB
1 stop13h 51mIberia
Thu 10/302:05 pmDUB - STL
1 stop13h 29mIberia
Deal found 4/23$655
This KAYAK deal was found by Cheapflights users on 4/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/141:30 pmSTL - DUB
2 stops22h 45mScandinavian Airlines
Sun 8/2410:15 amDUB - STL
2 stops43h 24mScandinavian Airlines
Deal found 4/22$670
This Delta deal was found by Cheapflights users on 4/23. 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.
Sun 7/209:00 amSTL - DUB
1 stop17h 45mDelta
Fri 8/110:00 amDUB - STL
1 stop12h 45mDelta
Deal found 4/23$686
This KLM deal was found by Cheapflights users on 4/24. 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 10/223:30 pmSTL - DUB
1 stop11h 15mKLM
Mon 10/279:45 amDUB - STL
1 stop18h 54mKLM
Deal found 4/24$742
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Tue 7/2910:00 amSTL - ORK
2 stops18h 45mAmerican Airlines
Mon 8/117:20 amORK - STL
2 stops19h 03mAmerican Airlines
Deal found 4/22$758
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Tue 5/207:30 pmSTL - SNN
2 stops14h 40mAmerican Airlines
Tue 5/277:40 amSNN - STL
2 stops20h 12mAmerican Airlines
Deal found 4/22$782

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 April 24, 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

Sun 8/17

1:30 pm-7:45 am

1 stop12h 15m

Dublin

Tue 8/26

9:20 am-10:38 am

2 stops31h 18m

$537

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 8/17

9:09 am-7:45 am

2 stops16h 36m

Dublin

Tue 8/26

9:20 am-12:25 pm

2 stops33h 05m

$542

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 8/17

9:09 am-7:45 am

2 stops16h 36m

Dublin

Tue 8/26

9:20 am-8:00 pm

1 stop16h 40m

$555

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 10/15

1:54 pm-9:45 am

1 stop13h 51m

Dublin

Thu 10/30

2:05 pm-10:34 pm

1 stop13h 29m

$655

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 8/14

1:30 pm-6:15 pm

2 stops22h 45m

Dublin

Sun 8/24

10:15 am-11:39 pm

2 stops43h 24m

$670

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 7/21

10:00 am-7:30 am

1 stop15h 30m

Shannon

Fri 8/1

9:30 am-3:47 pm

1 stop12h 17m

$685

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 7/20

9:00 am-8:45 am

1 stop17h 45m

Dublin

Fri 8/1

10:00 am-4:45 pm

1 stop12h 45m

$686

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 7/24

11:51 am-8:20 am

2 stops14h 29m

Dublin

Wed 7/30

11:00 am-11:39 pm

1 stop18h 39m

$760

St. LouisCork

STL - ORK

STLORK

Lambert-St Louis

Tue 7/29

1:20 pm-4:25 pm

2 stops21h 05m

Cork

Mon 8/11

5:10 pm-10:45 pm

2 stops35h 35m

$763

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 5/20

7:30 pm-4:10 pm

2 stops14h 40m

Shannon

Tue 5/27

7:40 am-9:52 pm

2 stops20h 12m

$782

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 34 results
1
2
3
4

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 $1,006). 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 April 24, 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.

Rainfall in Ireland by month

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

In terms of precipitation, rainfall in Ireland ranges from 1.9 - 3.1 inches per month. October is typically the wettest month, when rainfall can reach 3.1 in. February is typically the driest time to visit Ireland when rainfall is around 1.9 in.

Temperature in Ireland by month

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

If weather is an important factor for your trip to Ireland, 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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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 April 24, 2025.
To help decide which airline to fly from St. Louis to Ireland, see what other customers have to say about Delta, KLM and Air France. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,442 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,685 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Scandinavian Airlines
7.3
Good
1,344 reviews
Delta
8.0
Very good
7,920 reviews

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 Air Canada, with whom users have recently found tickets for as low as $428. However, be on the lookout for offers from Delta and United 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 - 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 $1,006). 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
St. Louis to Frankfurt flights
Kansas City to Heathrow flights
Kansas City to Leonardo da Vinci/Fiumicino flights
Kansas City to Dublin flights
St. Louis to Leonardo da Vinci/Fiumicino flights
St. Louis to Gatwick flights
St. Louis to Dublin flights
Kansas City to Gatwick flights
St. Louis to Charles de Gaulle flights
Kansas City to Charles de Gaulle flights
Kansas City to Vicenza flights
St. Louis to Lisbon flights
Kansas City to Athens flights
St. Louis to London City flights
Kansas City to London City flights
St. Louis to Orly flights
Kansas City to Frankfurt flights
St. Louis to Athens flights
St. Louis to Barcelona-El Prat flights
Kansas City to Istanbul flights
St. Louis to Sarajevo flights
Kansas City to Keflavik Intl flights
St. Louis to Zurich flights
Kansas City to Barcelona-El Prat flights
St. Louis to Munich flights
Kansas City to Amsterdam flights
St. Louis to Belfast Intl flights
St. Louis to Belfast City flights
Kansas City to Lisbon flights
Kansas City to Edinburgh flights
St. Louis to Istanbul flights
Kansas City to Malpensa flights
St. Louis to Keflavik Intl flights
Kansas City to Linate flights
St. Louis to Madrid flights
Kansas City to Sabiha Gokcen flights
St. Louis to Edinburgh flights
Kansas City to Madrid flights
Kansas City to Bruxelles-National flights
St. Louis to Vicenza flights
St. Louis to Amsterdam flights
St. Louis to Malpensa flights
Kansas City to Florence flights
St. Louis to Florence flights
Kansas City to Glasgow Intl flights
Kansas City to Zurich flights
Kansas City to Munich flights
Kansas City to Orly flights
St. Louis to Zagreb 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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$451Average$629FlexibilityNo cancel feeOn-time70%
IberiaCheapest$491Average$864FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$493Average$852FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$500Average$990FlexibilityNo cancel feeOn-time69%
KLMCheapest$520Average$627FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$544Average$819FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$560Average$879FlexibilityNo cancel feeOn-time76%
DeltaCheapest$567Average$936FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$740Average$1,097FlexibilityNo 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.