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Cheap flights from Ireland to St. Louis from €398

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 8/6. 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.
Multiple Airlines Logo
21:35 - 13:25
DUB
-
STL
21h 50m
2 stops
Multiple Airlines Logo
13:05 - 13:45
STL
-
DUB
18h 40m
2 stops
€766Multiple Airlines
Sun, 31 May - Sun, 7 Jun
Delta Logo
08:55 - 20:39
DUB
-
STL
17h 44m
2 stops
Delta Logo
08:49 - 10:00
STL
-
DUB
19h 11m
2 stops
€816Delta
Mon, 15 Jun - Mon, 22 Jun
Delta Logo
08:55 - 20:39
DUB
-
STL
17h 44m
2 stops
Delta Logo
10:20 - 10:00
STL
-
DUB
17h 40m
1 stop
€818Delta
Wed, 10 Jun - Wed, 17 Jun
Delta Logo
05:55 - 17:16
DUB
-
STL
17h 21m
2 stops
Delta Logo
13:59 - 10:00
STL
-
DUB
14h 01m
1 stop
€819Delta
Mon, 1 Jun - Mon, 8 Jun
Delta Logo
12:00 - 23:23
DUB
-
STL
17h 23m
1 stop
Delta Logo
13:39 - 08:45
STL
-
DUB
13h 06m
1 stop
€825Delta
Mon, 15 Jun - Mon, 22 Jun
Delta Logo
10:00 - 17:16
DUB
-
STL
13h 16m
1 stop
Delta Logo
09:21 - 08:45
STL
-
DUB
17h 24m
1 stop
€826Delta
Sun, 31 May - Sun, 7 Jun
Delta Logo
10:00 - 21:09
DUB
-
STL
17h 09m
1 stop
Delta Logo
13:39 - 08:45
STL
-
DUB
13h 06m
1 stop
€827Delta
Sun, 31 May - Sun, 7 Jun
Delta Logo
10:00 - 17:16
DUB
-
STL
13h 16m
1 stop
Delta Logo
11:13 - 10:00
STL
-
DUB
16h 47m
2 stops
€827Delta
Sun, 31 May - Sun, 7 Jun
Multiple Airlines Logo
21:35 - 13:25
DUB
-
STL
21h 50m
2 stops
Multiple Airlines Logo
13:05 - 19:05
STL
-
DUB
24h 00m
3 stops
€834Multiple Airlines
Sun, 31 May - Sun, 7 Jun
Finnair Logo
09:30 - 23:54
DUB
-
STL
20h 24m
1 stop
Finnair Logo
17:00 - 11:50
STL
-
DUB
12h 50m
1 stop
€871Finnair
Tue, 26 May - Tue, 2 Jun

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Delta flights from Ireland to St. Louis

Our best Delta deals on Ireland to St. Louis flight tickets
Delta
15 Jun
DUB08:55Dublin
17h 44m
2 stops
STL20:39Lambert-St Louis
22 Jun
STL08:49Lambert-St Louis
19h 11m
2 stops
DUB10:00Dublin
€816
Delta
10 Jun
DUB08:55Dublin
17h 44m
2 stops
STL20:39Lambert-St Louis
17 Jun
STL10:20Lambert-St Louis
17h 40m
1 stop
DUB10:00Dublin
€818
Delta
1 Jun
DUB05:55Dublin
17h 21m
2 stops
STL17:16Lambert-St Louis
8 Jun
STL13:59Lambert-St Louis
14h 01m
1 stop
DUB10:00Dublin
€819

Lufthansa flights from Ireland to St. Louis

Our best Lufthansa deals on Ireland to St. Louis flight tickets
Lufthansa
26 May
DUB06:00Dublin
15h 46m
2 stops
STL15:46Lambert-St Louis
2 Jun
STL13:13Lambert-St Louis
14h 32m
1 stop
DUB09:45Dublin
€957
Lufthansa
21 Aug
DUB06:05Dublin
21h 17m
2 stops
STL21:22Lambert-St Louis
11 Sept
STL08:44Lambert-St Louis
19h 56m
1 stop
DUB10:40Dublin
€1,009
Lufthansa
21 Aug
DUB11:35Dublin
11h 55m
1 stop
STL17:30Lambert-St Louis
11 Sept
STL12:30Lambert-St Louis
13h 00m
1 stop
DUB07:30Dublin
€1,036

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 5 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

Sun 31/5

21:35-13:25

2 stops21h 50m

Lambert-St Louis

Sun 7/6

13:05-13:45

2 stops18h 40m

€766

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 15/6

08:55-20:39

2 stops17h 44m

Lambert-St Louis

Mon 22/6

08:49-10:00

2 stops19h 11m

€816

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 10/6

08:55-20:39

2 stops17h 44m

Lambert-St Louis

Wed 17/6

10:20-10:00

1 stop17h 40m

€818

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 1/6

05:55-17:16

2 stops17h 21m

Lambert-St Louis

Mon 8/6

13:59-10:00

1 stop14h 01m

€819

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 15/6

12:00-23:23

1 stop17h 23m

Lambert-St Louis

Mon 22/6

13:39-08:45

1 stop13h 06m

€825

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 31/5

10:00-17:16

1 stop13h 16m

Lambert-St Louis

Sun 7/6

09:21-08:45

1 stop17h 24m

€826

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 31/5

10:00-21:09

1 stop17h 09m

Lambert-St Louis

Sun 7/6

13:39-08:45

1 stop13h 06m

€827
Fastest return journey

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 31/5

10:00-17:16

1 stop13h 16m

Lambert-St Louis

Sun 7/6

11:13-10:00

2 stops16h 47m

€827

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 31/5

21:35-13:25

2 stops21h 50m

Lambert-St Louis

Sun 7/6

13:05-19:05

3 stops24h 00m

€834

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 26/5

09:30-23:54

1 stop20h 24m

Lambert-St Louis

Tue 2/6

17:00-11:50

1 stop12h 50m

€871

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 July is another great option to travel to St. Louis, with average flight prices from Ireland averaging around €126.

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.
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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
American AirlinesPriceFrom €126Free CancellationRating
7.1
11,667 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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