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Cheap flights from St. Louis to Ireland from €252

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Ireland departing on 18/1. 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 St. Louis to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
Lufthansa Logo
11:22 - 07:30
STL
-
DUB
14h 08m1 stop
Lufthansa Logo
10:40 - 17:43
DUB
-
STL
13h 03m1 stop
€369Lufthansa
Wed, 14 Jan - Thu, 29 Jan
Austrian Airlines Logo
11:22 - 07:30
STL
-
DUB
14h 08m1 stop
Austrian Airlines Logo
09:30 - 23:59
DUB
-
STL
20h 29m1 stop
€370Austrian Airlines
Wed, 14 Jan - Thu, 29 Jan
Multiple Airlines Logo
16:05 - 06:10
STL
-
DUB
32h 05m1 stop
Multiple Airlines Logo
08:00 - 15:29
DUB
-
STL
12h 29m1 stop
€387Multiple Airlines
Fri, 6 Mar - Sat, 14 Mar
United Airlines Logo
11:20 - 08:10
STL
-
DUB
14h 50m1 stop
United Airlines Logo
09:00 - 22:00
DUB
-
STL
43h 00m2 stops
€391United Airlines
Thu, 22 Jan - Mon, 26 Jan
United Airlines Logo
08:05 - 08:10
STL
-
DUB
18h 05m1 stop
United Airlines Logo
09:00 - 21:59
DUB
-
STL
42h 59m2 stops
€392United Airlines
Thu, 29 Jan - Mon, 2 Feb
Multiple Airlines Logo
16:05 - 17:10
STL
-
DUB
20h 05m2 stops
Multiple Airlines Logo
08:00 - 15:29
DUB
-
STL
12h 29m1 stop
€394Multiple Airlines
Mon, 9 Mar - Wed, 18 Mar
British Airways Logo
18:44 - 17:00
STL
-
DUB
16h 16m2 stops
British Airways Logo
08:50 - 22:44
DUB
-
STL
19h 54m2 stops
€396British Airways
Wed, 14 Jan - Thu, 29 Jan
British Airways Logo
18:44 - 15:05
STL
-
DUB
14h 21m2 stops
British Airways Logo
20:40 - 16:30
DUB
-
STL
25h 50m2 stops
€397British Airways
Sun, 11 Jan - Sat, 17 Jan
American Airlines Logo
14:19 - 11:20
STL
-
SNN
15h 01m2 stops
American Airlines Logo
07:40 - 19:30
SNN
-
STL
17h 50m1 stop
€449American Airlines
Mon, 20 Apr - Tue, 5 May
American Airlines Logo
14:19 - 11:20
STL
-
SNN
15h 01m2 stops
American Airlines Logo
07:40 - 21:11
SNN
-
STL
19h 31m2 stops
€458American Airlines
Mon, 20 Apr - Tue, 5 May

British Airways flights from St. Louis to Ireland

Our best British Airways deals on St. Louis to Ireland flight tickets
British Airways
14 Jan
STL18:44Lambert-St Louis
16h 16m
2 stops
DUB17:00Dublin
29 Jan
DUB08:50Dublin
19h 54m
2 stops
STL22:44Lambert-St Louis
€396
Find similar
British Airways
11 Jan
STL18:44Lambert-St Louis
14h 21m
2 stops
DUB15:05Dublin
17 Jan
DUB20:40Dublin
25h 50m
2 stops
STL16:30Lambert-St Louis
€397
Find similar
British Airways
10 Jan
STL12:06Lambert-St Louis
15h 44m
2 stops
DUB09:50Dublin
17 Jan
DUB10:55Dublin
32h 08m
2 stops
STL13:03Lambert-St Louis
€406
Find similar

Delta flights from St. Louis to Ireland

Our best Delta deals on St. Louis to Ireland flight tickets
Delta
16 Dec
STL06:00Lambert-St Louis
19h 45m
1 stop
DUB07:45Dublin
30 Dec
DUB09:45Dublin
18h 31m
1 stop
STL22:16Lambert-St Louis
€723
Find similar
Delta
16 Dec
STL06:00Lambert-St Louis
19h 45m
1 stop
DUB07:45Dublin
30 Dec
DUB09:45Dublin
18h 31m
1 stop
STL22:16Lambert-St Louis
€724
Find similar
Delta
18 Dec
STL09:00Lambert-St Louis
16h 45m
1 stop
DUB07:45Dublin
24 Dec
DUB06:00Dublin
22h 16m
2 stops
STL22:16Lambert-St Louis
€790
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from St. Louis to Ireland 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 10 December 2025.
Use the filters below to find and compare flights from St. Louis to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 14/1

11:22-07:30

1 stop14h 08m

Dublin

Thu 29/1

10:40-17:43

1 stop13h 03m

€369

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 14/1

11:22-07:30

1 stop14h 08m

Dublin

Thu 29/1

09:30-23:59

1 stop20h 29m

€370

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 6/3

16:05-06:10

1 stop32h 05m

Dublin

Sat 14/3

08:00-15:29

1 stop12h 29m

€387

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 22/1

11:20-08:10

1 stop14h 50m

Dublin

Mon 26/1

09:00-22:00

2 stops43h 00m

€391

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 29/1

08:05-08:10

1 stop18h 05m

Dublin

Mon 2/2

09:00-21:59

2 stops42h 59m

€392

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 9/3

16:05-17:10

2 stops20h 05m

Dublin

Wed 18/3

08:00-15:29

1 stop12h 29m

€394

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 14/1

18:44-17:00

2 stops16h 16m

Dublin

Thu 29/1

08:50-22:44

2 stops19h 54m

€396

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 11/1

18:44-15:05

2 stops14h 21m

Dublin

Sat 17/1

20:40-16:30

2 stops25h 50m

€397

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 20/4

14:19-11:20

2 stops15h 01m

Shannon

Tue 5/5

07:40-19:30

1 stop17h 50m

€449

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 20/4

14:19-11:20

2 stops15h 01m

Shannon

Tue 5/5

07:40-21:11

2 stops19h 31m

€458

Flights are sorted by cheapest return flights first.

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

See travel insights to Ireland from

How to get the cheapest flight ticket from St. Louis to Ireland

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 Ireland?

The month of September is another great option to travel to Ireland, with average flight prices from St. Louis averaging around €603.

How far in advance should I book a flight to Ireland?

You are more likely to see cheaper flights to Ireland from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €710 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from St. Louis for as low as €528 on momondo.

Cheap St. Louis to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Ireland

Fastest flight time

12h 55m

Direct flights

None
The fastest flight from St. Louis to Ireland takes 12h 55m
There are no direct flights from St. Louis to Ireland. There are no popular flight routes from St. Louis to Ireland.
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  • When did momondo last update prices for flights from Lambert-St Louis Airport to Ireland?

    Prices for flights from Lambert-St Louis Airport to Ireland are updated daily.

  • How old do you have to be to fly from Lambert-St Louis Airport to Ireland?

    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 Lambert-St Louis Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Ireland

Compare and see reviews for airlines that fly from St. Louis to Ireland with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom €490Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Ireland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Ireland for you.

Can I find flights from St. Louis to Ireland with flexible booking policies on momondo?

Yes. All flights to Ireland from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Ireland?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Ireland.

I’m not ready to book a flight from St. Louis to Ireland right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Ireland now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ireland and let you know when they change.

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Find better results for your trip to Ireland

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