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Cheap flights from Ireland to St. Louis from €335

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 30/4. 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
12:00 - 19:30
DUB
-
STL
13h 30m
1 stop
Multiple Airlines Logo
14:40 - 07:45
STL
-
DUB
35h 05m
2 stops
€723Multiple Airlines
Tue, 25 Aug - Sat, 5 Sep
Multiple Airlines Logo
12:30 - 19:30
DUB
-
STL
13h 00m
1 stop
Multiple Airlines Logo
08:55 - 08:15
STL
-
DUB
17h 20m
1 stop
€770Multiple Airlines
Tue, 25 Aug - Sat, 5 Sep
Finnair Logo
09:30 - 22:19
DUB
-
STL
18h 49m
1 stop
Finnair Logo
17:00 - 11:50
STL
-
DUB
12h 50m
1 stop
€854Finnair
Sat, 9 May - Sun, 24 May
Finnair Logo
09:30 - 22:19
DUB
-
STL
18h 49m
1 stop
Finnair Logo
17:00 - 11:50
STL
-
DUB
12h 50m
1 stop
€859Finnair
Sat, 9 May - Sun, 24 May
Finnair Logo
09:30 - 22:19
DUB
-
STL
18h 49m
1 stop
Finnair Logo
17:00 - 11:50
STL
-
DUB
12h 50m
1 stop
€861Finnair
Sat, 9 May - Sun, 24 May
Finnair Logo
09:30 - 22:19
DUB
-
STL
18h 49m
1 stop
Finnair Logo
17:00 - 11:50
STL
-
DUB
12h 50m
1 stop
€861Finnair
Sat, 9 May - Sun, 24 May
Iberia Logo
09:30 - 22:59
DUB
-
STL
19h 29m
1 stop
Iberia Logo
20:03 - 11:50
STL
-
DUB
9h 47m
1 stop
€867Iberia
Fri, 1 May - Fri, 8 May
Multiple Airlines Logo
08:35 - 19:33
DUB
-
STL
16h 58m
2 stops
Multiple Airlines Logo
14:33 - 11:50
STL
-
DUB
15h 17m
1 stop
€867Multiple Airlines
Fri, 1 May - Fri, 8 May
Multiple Airlines Logo
12:45 - 23:19
DUB
-
STL
40h 34m
2 stops
Multiple Airlines Logo
18:04 - 10:00
STL
-
DUB
9h 56m
1 stop
€868Multiple Airlines
Sun, 3 May - Sun, 10 May
American Airlines Logo
09:30 - 17:13
DUB
-
STL
13h 43m
1 stop
American Airlines Logo
13:29 - 06:30
STL
-
DUB
11h 01m
1 stop
€871American Airlines
Fri, 3 Apr - Wed, 8 Apr

Finnair flights from Ireland to St. Louis

Our best Finnair deals on Ireland to St. Louis flight tickets
Finnair
9 May
DUB09:30Dublin
18h 49m
1 stop
STL22:19Lambert-St Louis
24 May
STL17:00Lambert-St Louis
12h 50m
1 stop
DUB11:50Dublin
€854
Finnair
9 May
DUB09:30Dublin
18h 49m
1 stop
STL22:19Lambert-St Louis
24 May
STL17:00Lambert-St Louis
12h 50m
1 stop
DUB11:50Dublin
€859
Finnair
9 May
DUB09:30Dublin
18h 49m
1 stop
STL22:19Lambert-St Louis
24 May
STL17:00Lambert-St Louis
12h 50m
1 stop
DUB11:50Dublin
€861

British Airways flights from Ireland to St. Louis

Our best British Airways deals on Ireland to St. Louis flight tickets
British Airways
23 Apr
DUB20:20Dublin
29h 10m
1 stop
STL19:30Lambert-St Louis
26 Apr
STL14:33Lambert-St Louis
13h 07m
2 stops
DUB09:40Dublin
€874
British Airways
3 Apr
DUB08:35Dublin
15h 18m
2 stops
STL17:53Lambert-St Louis
8 Apr
STL17:21Lambert-St Louis
15h 14m
2 stops
DUB14:35Dublin
€899
British Airways
25 Aug
DUB06:30Dublin
15h 18m
2 stops
STL15:48Lambert-St Louis
5 Sept
STL13:01Lambert-St Louis
15h 14m
2 stops
DUB10:15Dublin
€912

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 21 March 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

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 25/8

12:00-19:30

1 stop13h 30m

Lambert-St Louis

Sat 5/9

14:40-07:45

2 stops35h 05m

€723

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 25/8

12:30-19:30

1 stop13h 00m

Lambert-St Louis

Sat 5/9

08:55-08:15

1 stop17h 20m

€770

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 9/5

09:30-22:19

1 stop18h 49m

Lambert-St Louis

Sun 24/5

17:00-11:50

1 stop12h 50m

€854

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 9/5

09:30-22:19

1 stop18h 49m

Lambert-St Louis

Sun 24/5

17:00-11:50

1 stop12h 50m

€859

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 9/5

09:30-22:19

1 stop18h 49m

Lambert-St Louis

Sun 24/5

17:00-11:50

1 stop12h 50m

€861

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 9/5

09:30-22:19

1 stop18h 49m

Lambert-St Louis

Sun 24/5

17:00-11:50

1 stop12h 50m

€861

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 1/5

09:30-22:59

1 stop19h 29m

Lambert-St Louis

Fri 8/5

20:03-11:50

1 stop9h 47m

€867

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 1/5

08:35-19:33

2 stops16h 58m

Lambert-St Louis

Fri 8/5

14:33-11:50

1 stop15h 17m

€867

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 3/5

12:45-23:19

2 stops40h 34m

Lambert-St Louis

Sun 10/5

18:04-10:00

1 stop9h 56m

€868
Fastest return journey

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 3/4

09:30-17:13

1 stop13h 43m

Lambert-St Louis

Wed 8/4

13:29-06:30

1 stop11h 01m

€871

Flights are sorted by cheapest return flights first.

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

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

11h 35m

Direct flights

None
The fastest flight from Ireland to St. Louis takes 11h 35m
There are no direct flights from Ireland to St. Louis. There are no popular flight routes from Ireland to St. Louis.
Search flight deals

  • 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
American AirlinesPriceFrom €128Free CancellationRating
7.1
11,488 reviews
Search American Airlines flights

  • How do I get Price Alerts for flights from Ireland to St. Louis?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Ireland from St. Louis. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Ireland to St. Louis with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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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