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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 26/9. 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 - 20:42
DUB
-
STL
17h 02m
2 stops
Multiple Airlines Logo
16:09 - 09:20
STL
-
DUB
35h 11m
1 stop
€815Multiple Airlines
Sat, 8 Aug - Sat, 15 Aug
American Airlines Logo
12:40 - 20:26
DUB
-
STL
13h 46m
1 stop
American Airlines Logo
12:41 - 09:35
STL
-
DUB
14h 54m
1 stop
€855American Airlines
Wed, 2 Sep - Sun, 6 Sep
American Airlines Logo
09:30 - 00:14
DUB
-
STL
20h 44m
1 stop
American Airlines Logo
20:07 - 11:50
STL
-
DUB
9h 43m
1 stop
€857American Airlines
Wed, 2 Sep - Sun, 6 Sep
Multiple Airlines Logo
21:10 - 14:02
DUB
-
STL
22h 52m
2 stops
Multiple Airlines Logo
14:00 - 13:15
STL
-
DUB
17h 15m
3 stops
€877Multiple Airlines
Wed, 8 Jul - Wed, 15 Jul
Multiple Airlines Logo
09:40 - 20:42
DUB
-
STL
17h 02m
2 stops
Multiple Airlines Logo
12:59 - 09:55
STL
-
DUB
14h 56m
2 stops
€891Multiple Airlines
Sat, 8 Aug - Sat, 15 Aug
Finnair Logo
09:30 - 00:14
DUB
-
STL
20h 44m
1 stop
Finnair Logo
16:54 - 11:50
STL
-
DUB
12h 56m
1 stop
€918Finnair
Mon, 10 Aug - Tue, 25 Aug
Finnair Logo
09:30 - 00:16
DUB
-
STL
20h 46m
1 stop
Finnair Logo
17:58 - 11:50
STL
-
DUB
11h 52m
1 stop
€922Finnair
Thu, 16 Jul - Wed, 29 Jul
British Airways Logo
11:45 - 20:03
DUB
-
STL
14h 18m
1 stop
British Airways Logo
11:15 - 06:30
STL
-
DUB
13h 15m
1 stop
€932British Airways
Wed, 8 Jul - Wed, 15 Jul
American Airlines Logo
13:45 - 23:34
DUB
-
STL
15h 49m
1 stop
American Airlines Logo
15:25 - 09:35
STL
-
DUB
12h 10m
1 stop
€968American Airlines
Sat, 15 Aug - Fri, 4 Sep
Air Canada Logo
09:20 - 14:02
DUB
-
STL
10h 42m
1 stop
Air Canada Logo
12:59 - 07:45
STL
-
DUB
12h 46m
2 stops
€969Air Canada
Wed, 2 Sep - Sun, 6 Sep

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Iberia flights from Ireland to St. Louis

Our best Iberia deals on Ireland to St. Louis flight tickets
Iberia
15 Aug
DUB12:40Dublin
17h 02m
1 stop
STL23:42Lambert-St Louis
4 Sept
STL20:07Lambert-St Louis
9h 43m
1 stop
DUB11:50Dublin
€984
Iberia
4 Jul
DUB09:30Dublin
20h 45m
1 stop
STL00:15Lambert-St Louis
11 Jul
STL17:19Lambert-St Louis
12h 31m
1 stop
DUB11:50Dublin
€990
Iberia
4 Jul
DUB12:40Dublin
13h 41m
1 stop
STL20:21Lambert-St Louis
11 Jul
STL20:06Lambert-St Louis
54h 59m
2 stops
DUB09:05Dublin
€1,013

United Airlines flights from Ireland to St. Louis

Our best United Airlines deals on Ireland to St. Louis flight tickets
United Airlines
15 Aug
DUB09:20Dublin
10h 44m
1 stop
STL14:04Lambert-St Louis
4 Sept
STL16:50Lambert-St Louis
12h 20m
1 stop
DUB11:10Dublin
€1,067
United Airlines
25 Jul
DUB09:50Dublin
14h 23m
2 stops
STL18:13Lambert-St Louis
1 Aug
STL11:25Lambert-St Louis
14h 05m
2 stops
DUB07:30Dublin
€1,070
United Airlines
15 Aug
DUB09:20Dublin
15h 56m
2 stops
STL19:16Lambert-St Louis
4 Sept
STL16:50Lambert-St Louis
12h 20m
1 stop
DUB11:10Dublin
€1,072

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 28 June 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

Sat 8/8

09:40-20:42

2 stops17h 02m

Lambert-St Louis

Sat 15/8

16:09-09:20

1 stop35h 11m

€815

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 2/9

12:40-20:26

1 stop13h 46m

Lambert-St Louis

Sun 6/9

12:41-09:35

1 stop14h 54m

€855

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 2/9

09:30-00:14

1 stop20h 44m

Lambert-St Louis

Sun 6/9

20:07-11:50

1 stop9h 43m

€857

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 8/7

21:10-14:02

2 stops22h 52m

Lambert-St Louis

Wed 15/7

14:00-13:15

3 stops17h 15m

€877

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 8/8

09:40-20:42

2 stops17h 02m

Lambert-St Louis

Sat 15/8

12:59-09:55

2 stops14h 56m

€891

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 10/8

09:30-00:14

1 stop20h 44m

Lambert-St Louis

Tue 25/8

16:54-11:50

1 stop12h 56m

€918

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 16/7

09:30-00:16

1 stop20h 46m

Lambert-St Louis

Wed 29/7

17:58-11:50

1 stop11h 52m

€922

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 8/7

11:45-20:03

1 stop14h 18m

Lambert-St Louis

Wed 15/7

11:15-06:30

1 stop13h 15m

€932

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 15/8

13:45-23:34

1 stop15h 49m

Lambert-St Louis

Fri 4/9

15:25-09:35

1 stop12h 10m

€968
Fastest return journey

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 2/9

09:20-14:02

1 stop10h 42m

Lambert-St Louis

Sun 6/9

12:59-07:45

2 stops12h 46m

€969

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 €547.

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

10h 42m

Direct flights

None
The fastest flight from Ireland to St. Louis takes 10h 42m
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 €788Free CancellationRating
7.4
9,899 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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