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Cheap flights from Ireland to St. Louis from €403

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 16/7. 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.
KLM Logo
10:00 - 17:16
DUB
-
STL
13h 16m
1 stop
KLM Logo
10:20 - 10:00
STL
-
DUB
17h 40m
1 stop
€806KLM
Fri, 5 Jun - Thu, 18 Jun
Delta Logo
05:55 - 21:09
DUB
-
STL
21h 14m
2 stops
Delta Logo
13:59 - 10:00
STL
-
DUB
14h 01m
1 stop
€816Delta
Sat, 6 Jun - Wed, 10 Jun
Delta Logo
05:55 - 17:16
DUB
-
STL
17h 21m
2 stops
Delta Logo
10:51 - 10:00
STL
-
DUB
17h 09m
2 stops
€817Delta
Fri, 5 Jun - Thu, 18 Jun
Delta Logo
11:00 - 21:38
DUB
-
STL
16h 38m
1 stop
Delta Logo
18:10 - 10:00
STL
-
DUB
9h 50m
1 stop
€826Delta
Sat, 6 Jun - Wed, 10 Jun
Delta Logo
10:00 - 17:16
DUB
-
STL
13h 16m
1 stop
Delta Logo
15:57 - 07:55
STL
-
DUB
9h 58m
1 stop
€827Delta
Fri, 5 Jun - Thu, 18 Jun
Delta Logo
10:00 - 21:09
DUB
-
STL
17h 09m
1 stop
Delta Logo
09:21 - 08:45
STL
-
DUB
17h 24m
1 stop
€831Delta
Sun, 31 May - Sun, 7 Jun
KLM Logo
11:00 - 18:07
DUB
-
STL
13h 07m
1 stop
KLM Logo
15:57 - 07:55
STL
-
DUB
9h 58m
1 stop
€886KLM
Tue, 30 Jun - Tue, 7 Jul
Delta Logo
05:55 - 17:23
DUB
-
STL
17h 28m
2 stops
Delta Logo
18:04 - 15:25
STL
-
DUB
15h 21m
2 stops
€889Delta
Tue, 30 Jun - Tue, 7 Jul
Delta Logo
05:55 - 20:39
DUB
-
STL
20h 44m
2 stops
Delta Logo
11:18 - 07:55
STL
-
DUB
14h 37m
1 stop
€892Delta
Tue, 30 Jun - Tue, 7 Jul
Delta Logo
06:00 - 16:46
DUB
-
STL
16h 46m
2 stops
Delta Logo
09:21 - 10:00
STL
-
DUB
18h 39m
2 stops
€903Delta
Sun, 31 May - Sun, 7 Jun

KLM flights from Ireland to St. Louis

Our best KLM deals on Ireland to St. Louis flight tickets
KLM
5 Jun
DUB10:00Dublin
13h 16m
1 stop
STL17:16Lambert-St Louis
18 Jun
STL10:20Lambert-St Louis
17h 40m
1 stop
DUB10:00Dublin
€806
KLM
30 Jun
DUB11:00Dublin
13h 07m
1 stop
STL18:07Lambert-St Louis
7 Jul
STL15:57Lambert-St Louis
9h 58m
1 stop
DUB07:55Dublin
€886
KLM
30 May
DUB11:00Dublin
12h 59m
1 stop
STL17:59Lambert-St Louis
5 Sept
STL15:42Lambert-St Louis
11h 03m
1 stop
DUB08:45Dublin
€2,144

Delta flights from Ireland to St. Louis

Our best Delta deals on Ireland to St. Louis flight tickets
Delta
6 Jun
DUB05:55Dublin
21h 14m
2 stops
STL21:09Lambert-St Louis
10 Jun
STL13:59Lambert-St Louis
14h 01m
1 stop
DUB10:00Dublin
€816
Delta
5 Jun
DUB05:55Dublin
17h 21m
2 stops
STL17:16Lambert-St Louis
18 Jun
STL10:51Lambert-St Louis
17h 09m
2 stops
DUB10:00Dublin
€817
Delta
6 Jun
DUB11:00Dublin
16h 38m
1 stop
STL21:38Lambert-St Louis
10 Jun
STL18:10Lambert-St Louis
9h 50m
1 stop
DUB10:00Dublin
€826

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 19 May 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

Fri 5/6

10:00-17:16

1 stop13h 16m

Lambert-St Louis

Thu 18/6

10:20-10:00

1 stop17h 40m

€806

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 6/6

05:55-21:09

2 stops21h 14m

Lambert-St Louis

Wed 10/6

13:59-10:00

1 stop14h 01m

€816

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 5/6

05:55-17:16

2 stops17h 21m

Lambert-St Louis

Thu 18/6

10:51-10:00

2 stops17h 09m

€817

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 6/6

11:00-21:38

1 stop16h 38m

Lambert-St Louis

Wed 10/6

18:10-10:00

1 stop9h 50m

€826

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 5/6

10:00-17:16

1 stop13h 16m

Lambert-St Louis

Thu 18/6

15:57-07:55

1 stop9h 58m

€827

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 31/5

10:00-21:09

1 stop17h 09m

Lambert-St Louis

Sun 7/6

09:21-08:45

1 stop17h 24m

€831
Fastest return journey

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 30/6

11:00-18:07

1 stop13h 07m

Lambert-St Louis

Tue 7/7

15:57-07:55

1 stop9h 58m

€886

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 30/6

05:55-17:23

2 stops17h 28m

Lambert-St Louis

Tue 7/7

18:04-15:25

2 stops15h 21m

€889

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 30/6

05:55-20:39

2 stops20h 44m

Lambert-St Louis

Tue 7/7

11:18-07:55

1 stop14h 37m

€892

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 31/5

06:00-16:46

2 stops16h 46m

Lambert-St Louis

Sun 7/6

09:21-10:00

2 stops18h 39m

€903

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 €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
11,648 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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