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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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DUB
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 June 30, 2025.

Round-trip from

$522
(Delta)

One-way from

$398
(KAYAK)

Popular in

June

Cheapest in

February

Average price

$1,308
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 ($241 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 June 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 June 30, 2025.

This Delta deal was found by Cheapflights users on 6/30. 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.
Mon 7/286:04 pmSTL - DUB
2 stops14h 56mDelta
Wed 8/69:10 amDUB - STL
2 stops20h 43mDelta
Deal found 6/30$522
This Cheapflightsfares deal was found by Cheapflights users on 6/30. 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 9/111:03 pmSTL - DUB
1 stop11h 27mIberia
Thu 9/189:30 amDUB - STL
1 stop17h 36mIberia
Deal found 6/30$527
This United Airlines deal was found by Cheapflights users on 6/28. 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 7/281:30 pmSTL - DUB
1 stop12h 15mUnited Airlines
Mon 8/411:35 amDUB - STL
1 stop17h 10mUnited Airlines
Deal found 6/28$538
This Air Canada deal was found by Cheapflights users on 6/29. 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.
Sat 7/194:05 pmSTL - DUB
2 stops33h 40mAir Canada
Tue 7/2910:00 amDUB - STL
2 stops16h 00mAir Canada
Deal found 6/29$544
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Thu 9/115:27 amSTL - DUB
1 stop18h 03mAmerican Airlines
Sun 9/219:30 amDUB - STL
1 stop13h 47mAmerican Airlines
Deal found 6/28$593
This Cheapflightsfares deal was found by Cheapflights users on 6/28. 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.
Sun 10/1212:25 pmSTL - DUB
2 stops22h 30mLufthansa
Sat 10/185:45 pmDUB - STL
2 stops25h 45mLufthansa
Deal found 6/28$602
This Booking.com deal was found by Cheapflights users on 6/28. 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.
Sat 11/226:43 pmSTL - DUB
2 stops30h 27mMultiple Airlines
Sun 11/3012:05 pmDUB - STL
2 stops40h 42mMultiple Airlines
Deal found 6/28$621

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 June 30, 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

Mon 7/28

6:04 pm-3:00 pm

2 stops14h 56m

Dublin

Wed 8/6

9:10 am-11:53 pm

2 stops20h 43m

$522

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 9/11

1:03 pm-6:30 am

1 stop11h 27m

Dublin

Thu 9/18

9:30 am-9:06 pm

1 stop17h 36m

$527

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 7/28

1:30 pm-7:45 am

1 stop12h 15m

Dublin

Mon 8/4

11:35 am-10:45 pm

1 stop17h 10m

$538

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 7/19

4:05 pm-7:45 am

2 stops33h 40m

Dublin

Tue 7/29

10:00 am-8:00 pm

2 stops16h 00m

$544

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 9/11

5:27 am-5:30 am

1 stop18h 03m

Dublin

Sun 9/21

9:30 am-5:17 pm

1 stop13h 47m

$593

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 7/30

1:16 pm-8:10 am

1 stop12h 54m

$398

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 8/13

1:15 pm-9:45 am

2 stops14h 30m

$412

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 7/30

8:00 am-7:45 am

2 stops17h 45m

$413

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

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 June 27, 2025.

To ensure you get the cheapest price possible for a flight from St. Louis to Dublin, you should look to book at least 74 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 $937). 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 June 30, 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.

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 June 30, 2025.
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
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,852 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,654 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Aer Lingus
7.1
Good
1,140 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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, Delta ($522), Iberia ($527), and United Airlines ($538) offers the cheapest pricing from St. Louis to Dublin. Delta is 42% 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?

    $398 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on British Airways and Air Canada, with prices starting from $412 and $413, 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 $64 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 $937). 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 St. Louis?

Book flights to St. Louis 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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$491Average$799FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$500Average$629FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$506Average$883FlexibilityNo cancel feeOn-time69%
KLMCheapest$520Average$569FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$560Average$851FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$573Average$934FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$582Average$819FlexibilityNo cancel feeOn-time67%
DeltaCheapest$602Average$938FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$736Average$981FlexibilityNo cancel feeOn-timeN/A

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