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$398+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DUB
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$474
(United)

One-way from

$398
(Ovago)

Popular in

June

Cheapest in

November

Average price

$754
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 ($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 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 September 17, 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 11/1710:00 amSTL - DUB
1 stop16h 10mUnited Airlines
Wed 12/39:00 amDUB - STL
1 stop12h 29mUnited Airlines
Deal found 9/14$487
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 9/15. 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 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 9/15$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 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.
Wed 11/121:10 pmSTL - DUB
1 stop15h 10mUnited Airlines
Thu 12/410:40 amDUB - STL
1 stop17h 00mUnited Airlines
Deal found 9/15$502
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 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
Thu 12/410:40 amDUB - STL
1 stop12h 23mUnited Airlines
Deal found 9/15$508

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 September 17, 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

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

Tue 12/9

1:00 pm-7:30 am

2 stops12h 30m

Dublin

Thu 12/18

10:40 am-7:38 pm

1 stop14h 58m

$507

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

Fri 10/31

10:00 am-9:55 am

2 stops18h 55m

Dublin

Fri 11/7

9:00 am-9:54 pm

2 stops18h 54m

$552

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 1/1

9:55 am-8:10 am

1 stop16h 15m

Dublin

Fri 1/16

10:40 am-9:13 pm

1 stop16h 33m

$552

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 1/1

9:55 am-8:10 am

1 stop16h 15m

Dublin

Thu 1/15

10:40 am-8:58 pm

2 stops16h 18m

$557

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 10/14

12:14 pm-7:55 am

1 stop13h 41m

Dublin

Tue 10/21

10:00 am-4:46 pm

1 stop12h 46m

$577

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 10/15

12:25 pm-7:10 am

2 stops12h 45m

Dublin

Wed 10/22

1:35 pm-10:35 pm

2 stops15h 00m

$581

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 13 results
1
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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 September 12, 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 $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 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 September 17, 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?

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 September 17, 2025.
See what other customers who have flown with United Airlines, American Airlines, and Aer Lingus 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
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

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
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

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
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

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
7.2
Good
1,277 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

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
10,000 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

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
2,925 reviews
United Airlines
7.4
Good
8,926 reviews

Entertainment

7.1

Overall

7.4

Boarding

7.7

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.

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

    Airlines like United Airlines fly from St. Louis to Dublin in about 15h 10m. 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, 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 $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, 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 $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

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 September 17, 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$859FlexibilityNo cancel feeOn-time69%
DeltaCheapest$532Average$854FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$571Average$940FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$627Average$851FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$736Average$952FlexibilityNo cancel feeOn-timeN/A

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