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Cheap flights from Ireland to St. Louis from €319

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 27/6. 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
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.
WestJet Logo
09:40 - 20:35
DUB
-
STL
16h 55m
2 stops
WestJet Logo
06:30 - 08:20
STL
-
DUB
19h 50m
2 stops
€755WestJet
Thu, 9 Jul - Sun, 12 Jul
WestJet Logo
09:40 - 09:31
DUB
-
STL
29h 51m
2 stops
WestJet Logo
18:09 - 08:20
STL
-
DUB
32h 11m
2 stops
€780WestJet
Thu, 9 Jul - Thu, 23 Jul
Multiple Airlines Logo
09:40 - 20:22
DUB
-
STL
16h 42m
2 stops
Multiple Airlines Logo
08:55 - 08:20
STL
-
DUB
17h 25m
2 stops
€789Multiple Airlines
Wed, 15 Jul - Wed, 22 Jul
WestJet Logo
10:40 - 23:37
DUB
-
STL
18h 57m
2 stops
WestJet Logo
13:55 - 08:20
STL
-
DUB
12h 25m
2 stops
€815WestJet
Fri, 11 Sep - Tue, 22 Sep
Multiple Airlines Logo
10:10 - 19:39
DUB
-
STL
39h 29m
2 stops
Multiple Airlines Logo
16:32 - 10:35
STL
-
DUB
12h 03m
1 stop
€820Multiple Airlines
Sun, 20 Sep - Tue, 6 Oct
Multiple Airlines Logo
09:40 - 20:22
DUB
-
STL
16h 42m
2 stops
Multiple Airlines Logo
08:55 - 09:20
STL
-
DUB
18h 25m
1 stop
€820Multiple Airlines
Wed, 15 Jul - Wed, 22 Jul
WestJet Logo
10:40 - 23:23
DUB
-
STL
18h 43m
2 stops
WestJet Logo
06:30 - 08:20
STL
-
DUB
19h 50m
2 stops
€826WestJet
Fri, 3 Jul - Sun, 19 Jul
Multiple Airlines Logo
09:40 - 20:37
DUB
-
STL
16h 57m
2 stops
Multiple Airlines Logo
15:30 - 11:40
STL
-
DUB
14h 10m
1 stop
€834Multiple Airlines
Mon, 27 Jul - Mon, 17 Aug
Multiple Airlines Logo
09:40 - 20:37
DUB
-
STL
16h 57m
2 stops
Multiple Airlines Logo
15:30 - 16:55
STL
-
DUB
19h 25m
2 stops
€851Multiple Airlines
Mon, 27 Jul - Mon, 17 Aug
Multiple Airlines Logo
09:40 - 20:39
DUB
-
STL
16h 59m
2 stops
Multiple Airlines Logo
17:19 - 11:50
STL
-
DUB
12h 31m
1 stop
€875Multiple Airlines
Sat, 4 Jul - Sat, 18 Jul

Aer Lingus flights from Ireland to St. Louis

Our best Aer Lingus deals on Ireland to St. Louis flight tickets
Aer Lingus
20 Sept
DUB11:35Dublin
14h 28m
1 stop
STL20:03Lambert-St Louis
6 Oct
STL21:35Lambert-St Louis
14h 45m
1 stop
DUB18:20Dublin
€917
Aer Lingus
4 Jul
DUB11:35Dublin
11h 13m
1 stop
STL16:48Lambert-St Louis
17 Jul
STL17:59Lambert-St Louis
10h 36m
1 stop
DUB10:35Dublin
€1,220

Lufthansa flights from Ireland to St. Louis

Our best Lufthansa deals on Ireland to St. Louis flight tickets
Lufthansa
11 Sept
DUB06:05Dublin
13h 20m
1 stop
STL13:25Lambert-St Louis
22 Sept
STL12:28Lambert-St Louis
13h 02m
1 stop
DUB07:30Dublin
€950
Lufthansa
15 Jul
DUB05:55Dublin
13h 30m
1 stop
STL13:25Lambert-St Louis
22 Jul
STL12:23Lambert-St Louis
13h 07m
1 stop
DUB07:30Dublin
€1,014

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 2 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

Thu 9/7

09:40-20:35

2 stops16h 55m

Lambert-St Louis

Sun 12/7

06:30-08:20

2 stops19h 50m

€755

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 9/7

09:40-09:31

2 stops29h 51m

Lambert-St Louis

Thu 23/7

18:09-08:20

2 stops32h 11m

€780

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 15/7

09:40-20:22

2 stops16h 42m

Lambert-St Louis

Wed 22/7

08:55-08:20

2 stops17h 25m

€789

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 11/9

10:40-23:37

2 stops18h 57m

Lambert-St Louis

Tue 22/9

13:55-08:20

2 stops12h 25m

€815

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 20/9

10:10-19:39

2 stops39h 29m

Lambert-St Louis

Tue 6/10

16:32-10:35

1 stop12h 03m

€820

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 15/7

09:40-20:22

2 stops16h 42m

Lambert-St Louis

Wed 22/7

08:55-09:20

1 stop18h 25m

€820

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 3/7

10:40-23:23

2 stops18h 43m

Lambert-St Louis

Sun 19/7

06:30-08:20

2 stops19h 50m

€826

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 27/7

09:40-20:37

2 stops16h 57m

Lambert-St Louis

Mon 17/8

15:30-11:40

1 stop14h 10m

€834

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 27/7

09:40-20:37

2 stops16h 57m

Lambert-St Louis

Mon 17/8

15:30-16:55

2 stops19h 25m

€851
Fastest return journey

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 4/7

09:40-20:39

2 stops16h 59m

Lambert-St Louis

Sat 18/7

17:19-11:50

1 stop12h 31m

€875

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 €535.

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

14h 52m

Direct flights

None
The fastest flight from Ireland to St. Louis takes 14h 52m
There are no direct flights from Ireland to St. Louis. There are no popular flight routes from Ireland to St. Louis.
Search flight deals

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
American AirlinesPriceFrom €645Free CancellationRating
7.1
11,638 reviews
Search American 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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