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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
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
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 September 16, 2025.

Round-trip from

$481
(Air Canada)

One-way from

$398
(Ovago)

Popular in

June

Cheapest in

November

Average price

$754
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. 21% potential increase in price ($237 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 16, 2025.

This United deal was found by Cheapflights users on 9/16. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1711:49 amSTL - DUB
1 stop16h 06mMultiple Airlines
Wed 12/39:00 amDUB - STL
2 stops33h 15mMultiple Airlines
Deal found 9/16$474
This Air Canada deal was found by Cheapflights users on 9/14. 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 11/176:43 pmSTL - DUB
2 stops30h 27mAir Canada
Wed 12/39:00 amDUB - STL
2 stops33h 15mAir Canada
Deal found 9/14$481
This United Airlines deal was found by Cheapflights users on 9/14. 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 11/178:00 amSTL - DUB
1 stop18h 10mUnited Airlines
Fri 12/59:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 9/14$487
This Booking.com deal was found by Cheapflights users on 9/13. 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.
Mon 11/176:43 pmSTL - DUB
2 stops30h 27mAir Canada
Wed 11/269:00 amDUB - STL
1 stop12h 29mAir Canada
Deal found 9/13$489
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Wed 10/294:50 pmSTL - DUB
1 stop13h 10mLufthansa
Wed 11/55:10 amDUB - STL
1 stop14h 45mLufthansa
Deal found 9/14$491
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 11/119:00 amSTL - DUB
2 stops16h 30mUnited Airlines
Wed 12/39:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 9/15$492
This FlightHub deal was found by Cheapflights users on 9/14. 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.
Tue 10/214:05 pmSTL - DUB
1 stop10h 10mMultiple Airlines
Wed 11/55:10 amDUB - STL
1 stop14h 45mMultiple Airlines
Deal found 9/14$495
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/156:43 pmSTL - DUB
1 stop31h 27mUnited Airlines
Wed 12/39:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 9/15$498
This Delta deal was found by Cheapflights users on 9/15. 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 11/269:21 amSTL - DUB
2 stops17h 24mDelta
Thu 12/49:45 amDUB - STL
1 stop13h 04mDelta
Deal found 9/15$507
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/292:15 pmSTL - SNN
2 stops16h 15mAmerican Airlines
Wed 11/57:50 amSNN - STL
2 stops14h 57mAmerican Airlines
Deal found 9/14$559
This American Airlines deal was found by Cheapflights users on 9/14. 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 11/306:45 pmSTL - ORK
2 stops14h 40mAmerican Airlines
Mon 12/157:40 amORK - STL
2 stops21h 26mAmerican Airlines
Deal found 9/14$569
This American Airlines deal was found by Cheapflights users on 9/15. 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 10/3110:10 amSTL - ORK
2 stops20h 00mAmerican Airlines
Fri 11/77:40 amORK - STL
2 stops17h 47mAmerican Airlines
Deal found 9/15$609

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 September 16, 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 11/12

1:10 pm-10:20 am

1 stop15h 10m

Dublin

Fri 12/5

9:00 am-3:29 pm

1 stop12h 29m

$487

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/23

8:00 am-8:10 am

1 stop18h 10m

Dublin

Fri 12/5

9:00 am-3:29 pm

1 stop12h 29m

$487

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/16

7:05 am-7:45 am

1 stop18h 40m

Dublin

Thu 12/4

9:45 am-11:28 pm

1 stop19h 43m

$502

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 10/29

6:15 am-9:55 am

2 stops22h 40m

Dublin

Wed 11/5

10:40 am-10:22 pm

2 stops17h 42m

$507

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 12/9

1:00 pm-9:55 am

2 stops14h 55m

Dublin

Thu 12/18

10:40 am-9:55 pm

2 stops17h 15m

$507

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 10/31

1:10 pm-10:20 am

1 stop16h 10m

Dublin

Fri 11/7

9:00 am-3:29 pm

1 stop12h 29m

$537

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 11/14

1:10 pm-10:20 am

1 stop15h 10m

Dublin

Wed 12/3

9:00 am-3:29 pm

1 stop12h 29m

$537

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 11/25

3:14 pm-8:10 am

1 stop10h 56m

Dublin

Sat 12/6

10:40 am-5:03 pm

1 stop12h 23m

$552

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 11/13

5:06 pm-8:40 am

1 stop9h 34m

Dublin

Thu 12/4

11:30 am-9:28 pm

2 stops15h 58m

$557

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 10/29

2:15 pm-11:30 am

2 stops16h 15m

Shannon

Wed 11/5

7:50 am-4:47 pm

2 stops14h 57m

$559

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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 $923). 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 September 16, 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 September 16, 2025.
Get a feel of what it's like to fly with United Airlines, American Airlines, and Aer Lingus 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.
United Airlines
7.4
Good
8,924 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,924 reviews
United Airlines
7.4
Good
8,924 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,924 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Aer Lingus
7.2
Good
1,274 reviews
United Airlines
7.4
Good
8,924 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
10,000 reviews
United Airlines
7.4
Good
8,924 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Iberia
7.0
Good
2,924 reviews
United Airlines
7.4
Good
8,924 reviews

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 15h 10m. United Airlines provides one of the quickest options available for as low as $487. The distance between St. Louis and Ireland is about 3909 mi. This flight may include one or multiple stops.

  • 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 $923). 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$383Average$632FlexibilityNo cancel feeOn-time70%
KLMCheapest$412Average$571FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$462Average$777FlexibilityNo cancel feeOn-time67%
IberiaCheapest$482Average$678FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$492Average$917FlexibilityNo cancel feeOn-time69%
DeltaCheapest$532Average$854FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$548Average$829FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$627Average$851FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$736Average$952FlexibilityNo cancel feeOn-timeN/A

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