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$289+ Cheap flights from St. Louis (STL) to Dublin (DUB)

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DUB
Mar 22 — Mar 291
Sun 3/22
Sun 3/29
1 adult, Economy
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Cheap flight deals from St. Louis to Dublin

Cheapest flights from St. Louis to Dublin
Explore the most affordable flight options available from St. Louis to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2026.

This Mytrip deal was found by Cheapflights users on 2/17. 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.
Tue 9/18:55 am
STL
-
DUB
1 stop17h 20m
Multiple Airlines
Tue 9/85:55 am
DUB
-
STL
1 stop13h 30m
Multiple Airlines
Deal found 2/17$456
This United Airlines deal was found by Cheapflights users on 2/17. 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 4/226:30 am
STL
-
DUB
1 stop21h 15m
United Airlines
Tue 5/59:50 am
DUB
-
STL
1 stop32h 16m
United Airlines
Deal found 2/17$460
This Air Canada deal was found by Cheapflights users on 2/17. 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 8/1012:10 pm
STL
-
DUB
1 stop13h 35m
Air Canada
Wed 8/199:20 am
DUB
-
STL
2 stops33h 00m
Air Canada
Deal found 2/17$463
This United Airlines deal was found by Cheapflights users on 2/18. 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 8/118:25 am
STL
-
DUB
1 stop20h 15m
United Airlines
Wed 8/199:20 am
DUB
-
STL
2 stops33h 00m
United Airlines
Deal found 2/18$464
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Thu 2/1911:39 am
STL
-
DUB
1 stop16h 16m
United Airlines
Wed 3/49:00 am
DUB
-
STL
1 stop12h 29m
United Airlines
Deal found 2/17$467
This United Airlines deal was found by Cheapflights users on 2/17. 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 9/16:49 pm
STL
-
DUB
2 stops30h 56m
United Airlines
Tue 9/89:50 am
DUB
-
STL
2 stops34h 29m
United Airlines
Deal found 2/17$468
This United Airlines deal was found by Cheapflights users on 2/16. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:45 am
STL
-
DUB
2 stops17h 35m
United Airlines
Wed 4/159:50 am
DUB
-
STL
2 stops42h 38m
United Airlines
Deal found 2/16$469
This oojo deal was found by Cheapflights users on 2/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:03 pm
STL
-
DUB
2 stops16h 47m
British Airways
Wed 4/228:35 am
DUB
-
STL
1 stop16h 55m
British Airways
Deal found 2/18$470
This United Airlines deal was found by Cheapflights users on 2/18. 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.
Thu 2/269:55 am
STL
-
DUB
1 stop16h 15m
United Airlines
Mon 3/29:00 am
DUB
-
STL
1 stop12h 29m
United Airlines
Deal found 2/18$471
This United Airlines deal was found by Cheapflights users on 2/16. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:40 am
STL
-
DUB
1 stop19h 30m
United Airlines
Fri 11/279:00 am
DUB
-
STL
1 stop12h 30m
United Airlines
Deal found 2/16$474

Find flight deals from St. Louis to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Dublin (DUB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$460
(United Airlines)

One-way from

$289
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$569
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 Dublin
Search Deals
One-way flight from Lambert-St Louis to Dublin
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($222 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Dublin 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 February 20, 2026.
Use the filters below to find and compare flights from St. Louis to Dublin that are best for you.

Fly from

St. Louis

Fly to

Dublin

Route

Depart

Return

Price

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 4/18

8:15 pm-9:45 am

1 stop31h 30m

Dublin

Tue 5/5

9:50 am-12:06 pm

1 stop32h 16m

$460

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 4/15

7:45 am-7:30 am

2 stops17h 45m

Dublin

Wed 4/22

9:50 am-10:28 pm

2 stops42h 38m

$469

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 4/22

11:15 am-7:20 am

2 stops14h 05m

Dublin

Tue 4/28

9:50 am-10:28 pm

2 stops42h 38m

$469

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 2/26

8:17 am-8:10 am

1 stop17h 53m

Dublin

Mon 3/2

9:00 am-3:29 pm

1 stop12h 29m

$471

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 3/4

7:41 am-8:10 am

1 stop18h 29m

Dublin

Fri 3/13

8:00 am-3:29 pm

1 stop12h 29m

$471

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 4/19

8:00 am-9:45 am

1 stop19h 45m

Dublin

Wed 5/6

9:20 am-8:04 pm

1 stop16h 44m

$478

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 4/20

10:00 am-9:45 am

1 stop17h 45m

Dublin

Wed 5/6

9:20 am-8:04 pm

1 stop16h 44m

$478

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 4/14

8:30 am-7:20 am

1 stop16h 50m

Dublin

Wed 4/22

9:50 am-3:24 pm

1 stop11h 34m

$478

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 3/3

4:49 pm-7:10 am

2 stops56h 21m

$289

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 5/12

11:18 am-10:00 am

2 stops16h 42m

$293

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Showing 1-10 of 15 results
1
2

Compare providers for flights from St. Louis to Dublin

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Dublin in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Dublin flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Dublin flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Dublin flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Dublin flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Dublin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Dublin

Have a flexible travel schedule? Discover the best time to fly to Dublin 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 Dublin

How far ahead should I book a flight from St. Louis to Dublin?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Dublin. Price data was last updated on February 18, 2026.

To ensure you get the cheapest price possible for a flight from St. Louis to Dublin, you should look to book at least 42 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from St. Louis to Dublin?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Dublin (average of $397). Flying from St. Louis to Dublin in June is currently the most expensive (average of $718). 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.

How much does it cost to fly round-trip from St. Louis to Dublin?

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated February 20, 2026.
See what other customers who have flown with Delta, United Airlines, and American Airlines from St. Louis to Dublin have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,215 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

Comfort

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
8,215 reviews
Delta
7.9
Good
8,215 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

Comfort

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
9,324 reviews
Delta
7.9
Good
8,215 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

Comfort

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
11,319 reviews
Delta
7.9
Good
8,215 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

Comfort

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
10,732 reviews
Delta
7.9
Good
8,215 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

Comfort

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
3,118 reviews
Delta
7.9
Good
8,215 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

Comfort

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 Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Dublin?

    Airlines like United Airlines fly from St. Louis to Dublin in about 31h 30m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 3909 mi.

  • What are the cheapest airlines flying from St. Louis to Dublin round-trip?

    According to our current data, KLM ($412), British Airways ($418), and Lufthansa ($430) offers the cheapest pricing from St. Louis to Dublin. KLM is 44% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Dublin one-way?

    $319 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Aer Lingus and Delta, with prices starting from $323 and $334, respectively.

  • Where are the most common layover locations when flying from St. Louis to Dublin?

    Most of the time, St. Louis to Dublin flights that have layovers will stop in Chicago.

  • What are some popular things to do or see while on a layover in Chicago?

    Chicago travelers tend to visit Magnificent Mile, River North, and Grant Park more than anywhere else. Magnificent Mile, River North, and Grant Park are located about 15.5 mi, 15.0 mi, and 16.2 mi, respectively from Chicago O'Hare Intl. Travelers can book a car rental at Chicago O'Hare Intl for about $48 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for St. Louis to Dublin flights?

    Of the flights from St. Louis to Dublin that have layovers, the fewest flights stop in Toronto.

  • Can I find deals for flights from St. Louis to Dublin that include hotel bookings?

    Yes. In addition to deals on St. Louis to Dublin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Dublin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Dublin.

  • Can I find deals for business class flights from St. Louis to Dublin?

    Yes. Cheapflights offers flight deals from St. Louis to Dublin 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 Dublin?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Dublin (average of $397). Flying from St. Louis to Dublin in June is currently the most expensive (average of $718). 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

Traveling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Maynooth
Castleknock
Leixlip

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Top 9 airlines flying from St. Louis to Dublin

Discover the top 9 airlines that operate flights from St. Louis to Dublin. 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 February 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$412Average$614FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$418Average$546FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$430Average$751FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$462Average$732FlexibilityNo cancel feeOn-time67%
IberiaCheapest$466Average$615FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$468Average$722FlexibilityNo cancel feeOn-time69%
DeltaCheapest$483Average$755FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$488Average$807FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$662Average$948FlexibilityNo cancel feeOn-timeN/A

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