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$416+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DUB
Apr 9 — Apr 161
Wed 4/9
Wed 4/16
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 April 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$704
(United Airlines)

One-way from

$416
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$925
Provider with most accurate pricing for Lambert-St Louis-Dublin flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Dublin flights.
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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. 22% potential increase in price ($257 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 4, 2025.

This Air Canada deal was found by Cheapflights users on 4/4. 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.
Fri 10/244:05 pmSTL - DUB
1 stop10h 10mAir Canada
Sun 11/29:00 amDUB - STL
1 stop12h 26mAir Canada
Deal found 4/4$658
This United Airlines deal was found by Cheapflights users on 4/4. 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.
Fri 10/248:25 amSTL - DUB
1 stop19h 55mUnited Airlines
Sun 11/29:00 amDUB - STL
2 stops37h 26mUnited Airlines
Deal found 4/4$672
This United Airlines deal was found by Cheapflights users on 4/3. 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 7/231:20 pmSTL - SNN
1 stop12h 10mUnited Airlines
Thu 8/79:30 amSNN - STL
1 stop12h 17mUnited Airlines
Deal found 4/3$704
This Cheapflightsfares deal was found by Cheapflights users on 4/4. 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.
Thu 10/234:12 pmSTL - DUB
1 stop11h 33mIberia
Mon 10/272:05 pmDUB - STL
1 stop13h 29mIberia
Deal found 4/4$759
This United deal was found by Cheapflights users on 4/2. 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.
Wed 4/237:25 amSTL - DUB
1 stop21h 45mMultiple Airlines
Wed 4/309:50 amDUB - STL
1 stop32h 46mMultiple Airlines
Deal found 4/2$770
This Delta deal was found by Cheapflights users on 4/3. 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.
Thu 11/206:30 amSTL - DUB
1 stop19h 15mDelta
Sat 11/299:45 amDUB - STL
1 stop28h 59mDelta
Deal found 4/3$776
This Air France deal was found by Cheapflights users on 4/3. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2811:32 amSTL - DUB
1 stop14h 13mAir France
Tue 6/33:00 pmDUB - STL
2 stops14h 26mAir France
Deal found 4/3$799
This Lufthansa deal was found by Cheapflights users on 4/3. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/243:30 pmSTL - DUB
1 stop14h 00mLufthansa
Mon 9/810:40 amDUB - STL
2 stops35h 04mLufthansa
Deal found 4/3$833
This Delta deal was found by Cheapflights users on 4/3. 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.
Thu 6/126:00 amSTL - SNN
2 stops23h 10mDelta
Fri 6/201:05 pmSNN - STL
2 stops25h 56mDelta
Deal found 4/3$838
This Orbitz deal was found by Cheapflights users on 4/4. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/41:30 pmSTL - SNN
2 stops25h 05mMultiple Airlines
Sun 5/1112:30 pmSNN - STL
1 stop17h 16mMultiple Airlines
Deal found 4/4$891
This Air Canada deal was found by Cheapflights users on 4/4. 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 5/41:30 pmSTL - SNN
2 stops25h 05mAir Canada
Sun 5/119:15 pmSNN - STL
2 stops28h 43mAir Canada
Deal found 4/4$901
This KLM deal was found by Cheapflights users on 4/3. 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.
Sat 4/127:05 amSTL - DUB
1 stop19h 40mKLM
Sat 4/1911:00 amDUB - STL
1 stop18h 36mKLM
Deal found 4/3$914

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 4, 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. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 7/23

1:20 pm-7:30 am

1 stop12h 10m

Shannon

Thu 8/7

9:30 am-3:47 pm

1 stop12h 17m

$704

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 8/24

1:30 pm-7:45 am

1 stop12h 15m

Dublin

Tue 9/9

9:20 am-2:33 pm

2 stops35h 13m

$756

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/26

9:15 am-8:15 am

1 stop17h 00m

Dublin

Thu 9/4

9:20 am-3:44 pm

2 stops36h 24m

$763

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 4/23

7:25 am-11:10 am

1 stop21h 45m

Dublin

Wed 4/30

9:50 am-12:36 pm

1 stop32h 46m

$770

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 5/28

11:32 am-7:45 am

1 stop14h 13m

Dublin

Tue 6/3

3:00 pm-11:26 pm

2 stops14h 26m

$799

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 8/23

5:40 pm-8:45 am

1 stop33h 05m

Dublin

Wed 9/3

10:00 am-4:45 pm

1 stop12h 45m

$800

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 8/24

2:39 pm-6:30 am

1 stop9h 51m

Dublin

Sat 9/6

1:45 pm-11:49 pm

1 stop16h 04m

$820

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 8/24

3:30 pm-11:30 am

1 stop14h 00m

Dublin

Mon 9/8

10:40 am-3:44 pm

2 stops35h 04m

$833

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 6/12

6:00 am-11:10 am

2 stops23h 10m

Shannon

Fri 6/20

1:05 pm-9:01 am

2 stops25h 56m

$838

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 5/4

1:30 pm-8:35 pm

2 stops25h 05m

Shannon

Sun 5/11

12:30 pm-11:46 pm

1 stop17h 16m

$891

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/3

Showing 1-10 of 34 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 $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 4, 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 4, 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
7,900 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

8.0

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
7,900 reviews
Delta
8.0
Very good
7,900 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

8.0

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
1,323 reviews
Delta
8.0
Very good
7,900 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

8.0

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
1,427 reviews
Delta
8.0
Very good
7,900 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

8.0

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
8,618 reviews
Delta
8.0
Very good
7,900 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

8.0

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.
Turkish Airlines
7.3
Good
3,751 reviews
Delta
8.0
Very good
7,900 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Comfort

8.0

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 United Airlines, with whom users have recently found tickets for as low as $493. However, be on the lookout for offers from British Airways and Aer Lingus, 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

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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 April 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$491Average$863FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$494Average$861FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$498Average$1,005FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$499Average$632FlexibilityNo cancel feeOn-time70%
KLMCheapest$532Average$660FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$544Average$815FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$560Average$877FlexibilityNo cancel feeOn-time76%
DeltaCheapest$567Average$1,006FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$740Average$1,117FlexibilityNo cancel feeOn-timeN/A

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