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Cheap flights from St. Louis to Ireland from €373

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Ireland departing on 2/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
09:00 - 07:45STL-DUB
16h 45m1 stop
KLM Logo
09:45 - 16:49DUB-STL
13h 04m1 stop
€373KLM
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Tue, 2 Dec - Tue, 9 Dec
Delta Logo
06:00 - 07:45STL-DUB
19h 45m1 stop
Delta Logo
10:45 - 20:47DUB-STL
16h 02m2 stops
€377Delta
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Tue, 2 Dec - Tue, 9 Dec
Lufthansa Logo
11:22 - 07:30STL-DUB
14h 08m1 stop
Lufthansa Logo
05:10 - 23:59DUB-STL
24h 49m2 stops
€386Lufthansa
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Tue, 13 Jan - Mon, 19 Jan
Multiple Airlines Logo
09:57 - 07:10STL-DUB
15h 13m2 stops
Multiple Airlines Logo
05:10 - 23:59DUB-STL
24h 49m2 stops
€387Multiple Airlines
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Tue, 13 Jan - Mon, 19 Jan
Austrian Airlines Logo
11:22 - 07:30STL-DUB
14h 08m1 stop
Austrian Airlines Logo
09:30 - 23:59DUB-STL
20h 29m1 stop
€391Austrian Airlines
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Tue, 13 Jan - Mon, 19 Jan
Delta Logo
11:40 - 08:00STL-DUB
14h 20m2 stops
Delta Logo
10:45 - 20:47DUB-STL
16h 02m2 stops
€393Delta
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Tue, 2 Dec - Tue, 9 Dec
KLM Logo
14:11 - 07:45STL-DUB
11h 34m1 stop
KLM Logo
09:45 - 16:21DUB-STL
12h 36m1 stop
€394KLM
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Fri, 5 Dec - Wed, 10 Dec
Multiple Airlines Logo
11:22 - 07:30STL-DUB
14h 08m1 stop
Multiple Airlines Logo
09:50 - 15:24DUB-STL
11h 34m1 stop
€403Multiple Airlines
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Tue, 13 Jan - Tue, 14 Apr
American Airlines Logo
14:21 - 11:30STL-SNN
16h 09m2 stops
American Airlines Logo
07:40 - 21:48SNN-STL
20h 08m2 stops
€593American Airlines
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Wed, 25 Mar - Sat, 4 Apr
American Airlines Logo
13:44 - 11:30STL-SNN
15h 46m2 stops
American Airlines Logo
07:50 - 21:48SNN-STL
18h 58m2 stops
€615American Airlines
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Sat, 7 Mar - Sat, 14 Mar

Austrian Airlines flights from St. Louis to Ireland

Our best Austrian Airlines deals on St. Louis to Ireland flight tickets
Austrian Airlines
9 Dec
STL11:50Lambert-St Louis
13h 40m
1 stop
DUB07:30Dublin
16 Dec
DUB09:30Dublin
20h 12m
1 stop
STL23:42Lambert-St Louis
€329
Find similar
Austrian Airlines
9 Dec
STL11:50Lambert-St Louis
13h 40m
1 stop
DUB07:30Dublin
16 Dec
DUB09:30Dublin
20h 12m
1 stop
STL23:42Lambert-St Louis
€370
Find similar
Austrian Airlines
13 Jan
STL11:22Lambert-St Louis
14h 08m
1 stop
DUB07:30Dublin
19 Jan
DUB09:30Dublin
20h 29m
1 stop
STL23:59Lambert-St Louis
€391
Find similar

United Airlines flights from St. Louis to Ireland

Our best United Airlines deals on St. Louis to Ireland flight tickets
United Airlines
17 Nov
STL17:31Lambert-St Louis
10h 24m
1 stop
DUB09:55Dublin
3 Dec
DUB09:00Dublin
12h 29m
1 stop
STL15:29Lambert-St Louis
€357
Find similar
United Airlines
17 Nov
STL12:31Lambert-St Louis
12h 59m
2 stops
DUB07:30Dublin
3 Dec
DUB09:30Dublin
13h 33m
2 stops
STL17:03Lambert-St Louis
€367
Find similar
United Airlines
9 Dec
STL12:55Lambert-St Louis
12h 35m
2 stops
DUB07:30Dublin
16 Dec
DUB13:35Dublin
15h 10m
2 stops
STL22:45Lambert-St Louis
€377
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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 15 November 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

Tue 2/12

09:00-07:45

1 stop16h 45m

Dublin

Tue 9/12

09:45-16:49

1 stop13h 04m

€373

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 2/12

06:00-07:45

1 stop19h 45m

Dublin

Tue 9/12

10:45-20:47

2 stops16h 02m

€377

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 13/1

11:22-07:30

1 stop14h 08m

Dublin

Mon 19/1

05:10-23:59

2 stops24h 49m

€386

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 13/1

09:57-07:10

2 stops15h 13m

Dublin

Mon 19/1

05:10-23:59

2 stops24h 49m

€387

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 13/1

11:22-07:30

1 stop14h 08m

Dublin

Mon 19/1

09:30-23:59

1 stop20h 29m

€391

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 2/12

11:40-08:00

2 stops14h 20m

Dublin

Tue 9/12

10:45-20:47

2 stops16h 02m

€393

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 5/12

14:11-07:45

1 stop11h 34m

Dublin

Wed 10/12

09:45-16:21

1 stop12h 36m

€394

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 13/1

11:22-07:30

1 stop14h 08m

Dublin

Tue 14/4

09:50-15:24

1 stop11h 34m

€403

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

14:21-11:30

2 stops16h 09m

Shannon

Sat 4/4

07:40-21:48

2 stops20h 08m

€593

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 7/3

13:44-11:30

2 stops15h 46m

Shannon

Sat 14/3

07:50-21:48

2 stops18h 58m

€615

Flights are sorted by cheapest return flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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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 €604.

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 €728 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 €535 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

Direct flights

None
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
11,051 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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