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Cheap flights from Ireland to St. Louis from €332

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to St. Louis departing on 20/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Ireland to St. Louis

Recent return flight deals from Ireland to St. Louis

Enter your travel dates to find the best prices.
Multiple Airlines Logo
09:40 - 18:42
DUB
-
STL
15h 02m
2 stops
Multiple Airlines Logo
14:40 - 08:15
STL
-
DUB
11h 35m
1 stop
€729Multiple Airlines
Wed, 26 Aug - Wed, 2 Sep
Multiple Airlines Logo
22:00 - 16:11
DUB
-
STL
48h 11m
2 stops
Multiple Airlines Logo
15:52 - 07:55
STL
-
DUB
10h 03m
1 stop
€733Multiple Airlines
Thu, 27 Aug - Wed, 9 Sep
Multiple Airlines Logo
09:40 - 18:42
DUB
-
STL
15h 02m
2 stops
Multiple Airlines Logo
12:10 - 07:45
STL
-
DUB
13h 35m
1 stop
€737Multiple Airlines
Wed, 26 Aug - Wed, 2 Sep
Multiple Airlines Logo
09:40 - 20:24
DUB
-
STL
16h 44m
2 stops
Multiple Airlines Logo
14:40 - 22:40
STL
-
DUB
26h 00m
2 stops
€742Multiple Airlines
Thu, 27 Aug - Wed, 9 Sep
Multiple Airlines Logo
09:40 - 14:02
DUB
-
STL
34h 22m
2 stops
Multiple Airlines Logo
08:55 - 10:45
STL
-
DUB
19h 50m
1 stop
€768Multiple Airlines
Mon, 24 Aug - Mon, 31 Aug
Multiple Airlines Logo
11:30 - 23:55
DUB
-
STL
18h 25m
2 stops
Multiple Airlines Logo
08:25 - 10:15
STL
-
DUB
19h 50m
2 stops
€772Multiple Airlines
Sun, 15 Nov - Sun, 22 Nov
Multiple Airlines Logo
09:40 - 14:02
DUB
-
STL
34h 22m
2 stops
Multiple Airlines Logo
14:40 - 08:15
STL
-
DUB
11h 35m
1 stop
€784Multiple Airlines
Mon, 24 Aug - Mon, 31 Aug
Multiple Airlines Logo
09:40 - 14:02
DUB
-
STL
34h 22m
2 stops
Multiple Airlines Logo
12:10 - 08:15
STL
-
DUB
14h 05m
2 stops
€789Multiple Airlines
Mon, 24 Aug - Mon, 31 Aug
Multiple Airlines Logo
09:40 - 18:42
DUB
-
STL
15h 02m
2 stops
Multiple Airlines Logo
14:40 - 11:05
STL
-
DUB
14h 25m
2 stops
€792Multiple Airlines
Wed, 26 Aug - Wed, 2 Sep
Multiple Airlines Logo
09:40 - 14:02
DUB
-
STL
34h 22m
2 stops
Multiple Airlines Logo
14:40 - 08:15
STL
-
DUB
11h 35m
1 stop
€793Multiple Airlines
Mon, 24 Aug - Mon, 31 Aug

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WestJet flights from Ireland to St. Louis

Our best WestJet deals on Ireland to St. Louis flight tickets
WestJet
27 Aug
DUB10:40Dublin
19h 18m
2 stops
STL23:58Lambert-St Louis
9 Sept
STL10:29Lambert-St Louis
15h 51m
2 stops
DUB08:20Dublin
€868
WestJet
27 Aug
DUB09:40Dublin
17h 02m
2 stops
STL20:42Lambert-St Louis
9 Sept
STL10:29Lambert-St Louis
15h 51m
2 stops
DUB08:20Dublin
€952

Finnair flights from Ireland to St. Louis

Our best Finnair deals on Ireland to St. Louis flight tickets
Finnair
25 Aug
DUB09:30Dublin
20h 44m
1 stop
STL00:14Lambert-St Louis
1 Sept
STL16:50Lambert-St Louis
13h 00m
1 stop
DUB11:50Dublin
€853
Finnair
25 Aug
DUB09:40Dublin
20h 34m
2 stops
STL00:14Lambert-St Louis
1 Sept
STL16:50Lambert-St Louis
13h 00m
1 stop
DUB11:50Dublin
€936
Finnair
19 Jul
DUB09:30Dublin
20h 46m
1 stop
STL00:16Lambert-St Louis
26 Jul
STL17:58Lambert-St Louis
11h 52m
1 stop
DUB11:50Dublin
€942

momondo Fare Finder

 
Customise your flight search to find flights from Ireland to St. Louis 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, momondo users made 13,528 searches. Data last updated 14 July 2026.
Use the filters below to find and compare flights from Ireland to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 26/8

09:40-18:42

2 stops15h 02m

Lambert-St Louis

Wed 2/9

14:40-08:15

1 stop11h 35m

€729

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 27/8

22:00-16:11

2 stops48h 11m

Lambert-St Louis

Wed 9/9

15:52-07:55

1 stop10h 03m

€733

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 26/8

09:40-18:42

2 stops15h 02m

Lambert-St Louis

Wed 2/9

12:10-07:45

1 stop13h 35m

€737

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 27/8

09:40-20:24

2 stops16h 44m

Lambert-St Louis

Wed 9/9

14:40-22:40

2 stops26h 00m

€742

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 24/8

09:40-14:02

2 stops34h 22m

Lambert-St Louis

Mon 31/8

08:55-10:45

1 stop19h 50m

€768

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 15/11

11:30-23:55

2 stops18h 25m

Lambert-St Louis

Sun 22/11

08:25-10:15

2 stops19h 50m

€772

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 24/8

09:40-14:02

2 stops34h 22m

Lambert-St Louis

Mon 31/8

14:40-08:15

1 stop11h 35m

€784

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 24/8

09:40-14:02

2 stops34h 22m

Lambert-St Louis

Mon 31/8

12:10-08:15

2 stops14h 05m

€789

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 26/8

09:40-18:42

2 stops15h 02m

Lambert-St Louis

Wed 2/9

14:40-11:05

2 stops14h 25m

€792

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 24/8

09:40-14:02

2 stops34h 22m

Lambert-St Louis

Mon 31/8

14:40-08:15

1 stop11h 35m

€793

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to St. Louis from

How to get the cheapest flight ticket from Ireland to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

The cheapest month to fly to St. Louis from Ireland is in November. Flight prices, which tend to average around €0, are often lower during this time because this is during the off-season. The month of September is another great option to travel to St. Louis, with average flight prices from Ireland averaging around €546.

Cheap Ireland to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to St. Louis

Fastest flight time

12h 26m

Direct flights

None
The fastest flight from Ireland to St. Louis takes 12h 26m
There are no direct flights from Ireland to St. Louis. There are no popular flight routes from Ireland to St. Louis.
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Frequently asked questions about flying from Ireland to St. Louis

  • When did momondo last update prices for flights from Ireland to Lambert-St Louis Airport?

    Prices for flights from Ireland to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from Ireland to Lambert-St Louis Airport?

  • How old do you have to be to fly from Ireland to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ireland to St. Louis

Compare and see reviews for airlines that fly from Ireland to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom €814Free CancellationRating
7.4
9,988 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ireland to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from Ireland to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from Ireland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ireland to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ireland to St. Louis right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ireland to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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