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Ireland

$330+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DUB
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$501
(Booking.com)

One-way from

$330
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,286
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 ($232 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Booking.com deal was found by Cheapflights users on 6/11. 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 7/205:00 amSTL - DUB
2 stops20h 45mAir Canada
Tue 8/59:20 amDUB - STL
2 stops36h 01mAir Canada
Deal found 6/11$501
This United Airlines deal was found by Cheapflights users on 6/11. 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 9/31:30 pmSTL - DUB
1 stop12h 15mUnited Airlines
Tue 9/99:20 amDUB - STL
2 stops36h 24mUnited Airlines
Deal found 6/11$503
This Booking.com deal was found by Cheapflights users on 6/11. 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.
Tue 11/1810:30 amSTL - DUB
2 stops14h 40mMultiple Airlines
Tue 11/255:00 amDUB - STL
2 stops23h 47mMultiple Airlines
Deal found 6/11$530
This Iberia deal was found by Cheapflights users on 6/11. 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.
Sun 7/205:56 pmSTL - DUB
1 stop33h 49mIberia
Tue 8/51:45 pmDUB - STL
1 stop11h 23mIberia
Deal found 6/11$533
This KLM deal was found by Cheapflights users on 6/10. 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.
Tue 8/510:46 amSTL - DUB
1 stop15h 59mKLM
Tue 8/1911:00 amDUB - STL
1 stop17h 02mKLM
Deal found 6/10$536
This United Airlines deal was found by Cheapflights users on 6/10. 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 9/156:35 amSTL - SNN
1 stop18h 55mUnited Airlines
Wed 9/2412:30 pmSNN - STL
1 stop13h 09mUnited Airlines
Deal found 6/10$546
This Delta deal was found by Cheapflights users on 6/9. 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 9/310:45 amSTL - DUB
2 stops15h 10mDelta
Wed 9/171:15 pmDUB - STL
2 stops24h 55mDelta
Deal found 6/9$546
This Ovago deal was found by Cheapflights users on 6/11. 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.
Mon 7/2812:27 pmSTL - DUB
2 stops15h 13mBritish Airways
Wed 8/610:50 amDUB - STL
2 stops18h 24mBritish Airways
Deal found 6/11$553
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 7/106:10 amSTL - DUB
1 stop18h 20mAmerican Airlines
Thu 7/179:30 amDUB - STL
1 stop16h 54mAmerican Airlines
Deal found 6/10$607
This American Airlines deal was found by Cheapflights users on 6/12. 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 02mAmerican Airlines
Deal found 6/12$615
This Ovago deal was found by Cheapflights users on 6/12. 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 10/2811:49 amSTL - DUB
1 stop14h 11mLufthansa
Sun 11/95:10 amDUB - STL
1 stop14h 45mLufthansa
Deal found 6/12$616
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/101:30 pmSTL - SNN
2 stops20h 40mAir Canada
Sat 8/165:30 pmSNN - STL
2 stops32h 30mAir Canada
Deal found 6/11$800

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 June 12, 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 7/20

5:00 am-7:45 am

2 stops20h 45m

Dublin

Tue 8/5

9:20 am-3:21 pm

2 stops36h 01m

$501

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 9/3

1:30 pm-7:45 am

1 stop12h 15m

Dublin

Tue 9/9

9:20 am-3:44 pm

2 stops36h 24m

$503

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 7/20

5:56 pm-9:45 am

1 stop33h 49m

Dublin

Tue 8/5

1:45 pm-7:08 pm

1 stop11h 23m

$533

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/5

10:46 am-8:45 am

1 stop15h 59m

Dublin

Tue 8/19

11:00 am-10:02 pm

1 stop17h 02m

$536

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 9/3

10:45 am-7:55 am

2 stops15h 10m

Dublin

Wed 9/17

1:15 pm-8:10 am

2 stops24h 55m

$546

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 7/28

12:27 pm-9:40 am

2 stops15h 13m

Dublin

Wed 8/6

10:50 am-11:14 pm

2 stops18h 24m

$553

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/19

5:30 pm-7:45 am

2 stops32h 15m

Dublin

Mon 8/25

7:50 pm-8:00 pm

2 stops30h 10m

$565

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 7/10

6:10 am-6:30 am

1 stop18h 20m

Dublin

Thu 7/17

9:30 am-8:24 pm

1 stop16h 54m

$607

St. LouisCork

STL - ORK

STLORK

Lambert-St Louis

Tue 7/29

10:00 am-10:45 am

2 stops18h 45m

Cork

Mon 8/11

7:20 am-8:22 pm

2 stops19h 02m

$615

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 8/10

5:30 pm-10:15 pm

2 stops22h 45m

Dublin

Sat 8/16

5:45 pm-3:47 pm

2 stops28h 02m

$783

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 24 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, 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 $947). 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 June 12, 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 June 12, 2025.
To help decide which airline to fly from St. Louis to Ireland, see what other customers have to say about Delta, KLM and Austrian Airlines. 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
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

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 United Airlines, with whom users have recently found tickets for as low as $408. However, be on the lookout for offers from British Airways 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 - 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, 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 $947). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$451Average$629FlexibilityNo cancel feeOn-time70%
IberiaCheapest$491Average$816FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$503Average$825FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$507Average$959FlexibilityNo cancel feeOn-time69%
KLMCheapest$531Average$571FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$560Average$879FlexibilityNo cancel feeOn-time76%
DeltaCheapest$569Average$910FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$582Average$832FlexibilityNo cancel feeOn-time67%
Aer LingusCheapest$736Average$996FlexibilityNo cancel feeOn-timeN/A

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