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$291+ 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DUB
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap 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 August 14, 2025.

Round-trip from

$463
(Air Canada)

One-way from

$291
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$751
From Lambert-St Louis to Dublin
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One-way flight from Lambert-St Louis to Dublin
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Highest demand for flights based on searches. 21% potential increase in price ($239 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 August 14, 2025.

This Air Canada deal was found by Cheapflights users on 8/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/94:05 pmSTL - DUB
1 stop10h 10mAir Canada
Tue 9/169:20 amDUB - STL
1 stop16h 37mAir Canada
Deal found 8/11$463
This United deal was found by Cheapflights users on 8/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:00 amSTL - DUB
1 stop19h 20mMultiple Airlines
Wed 10/159:50 amDUB - STL
1 stop11h 28mMultiple Airlines
Deal found 8/11$467
This Priceline deal was found by Cheapflights users on 8/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/61:30 pmSTL - DUB
2 stops36h 45mAir Canada
Wed 10/159:50 amDUB - STL
1 stop15h 48mAir Canada
Deal found 8/11$469
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Tue 9/27:04 pmSTL - DUB
1 stop32h 41mUnited Airlines
Tue 9/99:20 amDUB - STL
1 stop16h 37mUnited Airlines
Deal found 8/11$472
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Mon 10/65:28 pmSTL - DUB
2 stops32h 47mUnited Airlines
Wed 10/159:50 amDUB - STL
1 stop11h 28mUnited Airlines
Deal found 8/11$474
This United Airlines deal was found by Cheapflights users on 8/11. 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 10/812:25 pmSTL - DUB
2 stops12h 45mUnited Airlines
Wed 10/159:20 amDUB - STL
2 stops18h 40mUnited Airlines
Deal found 8/11$475
This Cheapflightsfares deal was found by Cheapflights users on 8/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/17:59 pmSTL - DUB
1 stop9h 41mIberia
Tue 9/912:40 pmDUB - STL
1 stop13h 35mIberia
Deal found 8/12$478
This United Airlines deal was found by Cheapflights users on 8/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/238:00 amSTL - DUB
1 stop18h 10mUnited Airlines
Wed 12/39:00 amDUB - STL
2 stops33h 15mUnited Airlines
Deal found 8/12$504
This Air Canada deal was found by Cheapflights users on 8/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/238:00 amSTL - DUB
2 stops17h 10mAir Canada
Wed 12/39:00 amDUB - STL
2 stops36h 40mAir Canada
Deal found 8/12$511
This FlightHub deal was found by Cheapflights users on 8/11. 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.
Wed 11/268:40 amSTL - DUB
2 stops19h 00mBritish Airways
Mon 12/18:40 pmDUB - STL
2 stops26h 00mBritish Airways
Deal found 8/11$518

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 August 14, 2025.
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

Tue 9/9

4:05 pm-8:15 am

1 stop10h 10m

Dublin

Tue 9/16

9:20 am-7:57 pm

1 stop16h 37m

$463

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 10/8

6:00 am-7:20 am

1 stop19h 20m

Dublin

Wed 10/15

9:50 am-3:18 pm

1 stop11h 28m

$467

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 10/6

1:30 pm-8:15 am

2 stops36h 45m

Dublin

Wed 10/15

9:50 am-7:38 pm

1 stop15h 48m

$469

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/2

7:04 pm-9:45 am

1 stop32h 41m

Dublin

Tue 9/9

9:20 am-7:57 pm

1 stop16h 37m

$472

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 10/8

6:30 am-7:10 am

2 stops18h 40m

Dublin

Wed 10/15

9:50 am-3:18 pm

1 stop11h 28m

$472

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 10/6

5:28 pm-8:15 am

2 stops32h 47m

Dublin

Wed 10/15

9:50 am-3:18 pm

1 stop11h 28m

$474

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 9/9

3:59 pm-9:45 am

1 stop11h 46m

Dublin

Tue 9/16

1:45 pm-9:53 pm

1 stop14h 08m

$478

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 9/1

7:59 pm-11:40 am

1 stop9h 41m

Dublin

Tue 9/9

12:40 pm-8:15 pm

1 stop13h 35m

$478

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 9/8

3:59 pm-9:45 am

1 stop11h 46m

Dublin

Fri 9/19

1:45 pm-8:32 pm

1 stop12h 47m

$478

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 11/12

12:31 pm-8:10 am

1 stop13h 39m

Dublin

Wed 11/26

9:00 am-3:29 pm

1 stop12h 29m

$517

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 16 results
1
2

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 August 8, 2025.

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, November is the cheapest month in which you can book a flight from St. Louis to Dublin (average of $509). Flying from St. Louis to Dublin in June is currently the most expensive (average of $925). 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 DUB?

Find hourly flight availability from St. Louis to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

One of the essential ways to save on airfare from St. Louis to Dublin is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 48% on airfare.

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

What’s the top layover airport for flights from St. Louis to Dublin?

Share of 1-stop round-trip flights from St. Louis to Dublin chosen by Cheapflights users in the past 12 months, using the same layover each way.

Toronto (YYZ) – chosen by Cheapflights users on 67% of 1-stop itineraries from St. Louis to Dublin on Cheapflights.

What’s the cheapest layover airport for flights from St. Louis to Dublin?

Average round-trip fare for 1-stop flights from St. Louis to Dublin, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Philadelphia (PHL) is the most affordable 1-stop option, with an average round-trip price of $767.

What’s the fastest layover option from St. Louis to Dublin?

Shortest average travel time for 1-stop one-way flights from St. Louis to Dublin, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Toronto (YYZ) have the shortest average one-way travel time for 1-stop routes: 10h 45m.

Which airport typically offers the quickest layover for flights from St. Louis to Dublin?

Average layover duration for 1-stop one-way flights from St. Louis to Dublin, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Toronto (YYZ) offer the fastest connection on this route, with an average layover time of 1h 58m.

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 August 14, 2025.
See what other customers who have flown with United Airlines, American Airlines, and Air Canada 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.
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

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
8,916 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

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
8,916 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

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
9,949 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

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
7.1
Good
1,214 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

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
2,882 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

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

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

    According to our current data, British Airways ($383), KLM ($412), and Air Canada ($462) offers the cheapest pricing from St. Louis to Dublin. British Airways is 56% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 $69 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, November is the cheapest month in which you can book a flight from St. Louis to Dublin (average of $509). Flying from St. Louis to Dublin in June is currently the most expensive (average of $925). 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
Swords
Wicklow
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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$383Average$632FlexibilityNo cancel feeOn-time70%
KLMCheapest$412Average$569FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$462Average$783FlexibilityNo cancel feeOn-time67%
IberiaCheapest$482Average$646FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$493Average$867FlexibilityNo cancel feeOn-time69%
DeltaCheapest$532Average$900FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$570Average$934FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$627Average$859FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$736Average$968FlexibilityNo cancel feeOn-timeN/A

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