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Cheap flights from St. Louis to Ireland from €347

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 8/1. 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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Cheap return flights

Enter your travel dates to find the best prices.
Austrian Airlines Logo
11:28 - 07:30STL-DUB
15h 02m1 stop
Austrian Airlines Logo
09:30 - 23:51DUB-STL
19h 21m1 stop
€375Austrian Airlines
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Tue, 10 Mar - Tue, 17 Mar
United Airlines Logo
08:30 - 10:20STL-DUB
19h 50m1 stop
United Airlines Logo
09:00 - 21:58DUB-STL
42h 58m2 stops
€395United Airlines
Find Deal
Fri, 5 Dec - Wed, 10 Dec
Air Canada Logo
15:11 - 07:10STL-DUB
33h 59m2 stops
Air Canada Logo
09:00 - 14:30DUB-STL
35h 30m2 stops
€401Air Canada
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Wed, 7 Jan - Wed, 14 Jan
Lufthansa Logo
11:28 - 07:30STL-DUB
15h 02m1 stop
Lufthansa Logo
05:10 - 14:55DUB-STL
14h 45m1 stop
€402Lufthansa
Find Deal
Tue, 10 Mar - Wed, 18 Mar
Multiple Airlines Logo
16:05 - 22:45STL-DUB
25h 40m2 stops
Multiple Airlines Logo
08:00 - 15:29DUB-STL
12h 29m1 stop
€403Multiple Airlines
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Sun, 8 Mar - Wed, 18 Mar
Multiple Airlines Logo
11:50 - 07:30STL-DUB
13h 40m1 stop
Multiple Airlines Logo
09:00 - 15:29DUB-STL
12h 29m1 stop
€405Multiple Airlines
Find Deal
Fri, 5 Dec - Wed, 10 Dec
Air Canada Logo
18:35 - 07:10STL-DUB
30h 35m2 stops
Air Canada Logo
09:00 - 14:30DUB-STL
35h 30m2 stops
€406Air Canada
Find Deal
Mon, 5 Jan - Wed, 14 Jan
Lufthansa Logo
11:28 - 10:05STL-DUB
17h 37m2 stops
Lufthansa Logo
05:10 - 14:55DUB-STL
14h 45m1 stop
€408Lufthansa
Find Deal
Tue, 10 Mar - Wed, 18 Mar
American Airlines Logo
12:11 - 11:30STL-SNN
17h 19m2 stops
American Airlines Logo
07:50 - 21:15SNN-STL
19h 25m2 stops
€419American Airlines
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Thu, 8 Jan - Thu, 15 Jan
American Airlines Logo
18:33 - 15:45STL-SNN
15h 12m2 stops
American Airlines Logo
14:45 - 23:08SNN-STL
14h 23m2 stops
€592American Airlines
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Fri, 20 Feb - Tue, 24 Feb

United Airlines flights from St. Louis to Ireland

Our best United Airlines deals on St. Louis to Ireland flight tickets
United Airlines
5 Dec
STL08:30Lambert-St Louis
19h 50m
1 stop
DUB10:20Dublin
10 Dec
DUB09:00Dublin
42h 58m
2 stops
STL21:58Lambert-St Louis
€395
Find similar
United Airlines
5 Dec
STL15:19Lambert-St Louis
12h 36m
2 stops
DUB09:55Dublin
10 Dec
DUB09:00Dublin
42h 58m
2 stops
STL21:58Lambert-St Louis
€400
Find similar
United Airlines
5 Feb
STL06:30Lambert-St Louis
19h 40m
1 stop
DUB08:10Dublin
11 Feb
DUB09:00Dublin
12h 29m
1 stop
STL15:29Lambert-St Louis
€406
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Lufthansa flights from St. Louis to Ireland

Our best Lufthansa deals on St. Louis to Ireland flight tickets
Lufthansa
10 Mar
STL11:28Lambert-St Louis
15h 02m
1 stop
DUB07:30Dublin
18 Mar
DUB05:10Dublin
14h 45m
1 stop
STL14:55Lambert-St Louis
€402
Find similar
Lufthansa
10 Mar
STL11:28Lambert-St Louis
17h 37m
2 stops
DUB10:05Dublin
18 Mar
DUB05:10Dublin
14h 45m
1 stop
STL14:55Lambert-St Louis
€408
Find similar
Lufthansa
2 Dec
STL13:00Lambert-St Louis
13h 10m
1 stop
DUB08:10Dublin
9 Dec
DUB09:10Dublin
20h 32m
2 stops
STL23:42Lambert-St Louis
€410
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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 24 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 10/3

11:28-07:30

1 stop15h 02m

Dublin

Tue 17/3

09:30-23:51

1 stop19h 21m

€375

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 5/12

08:30-10:20

1 stop19h 50m

Dublin

Wed 10/12

09:00-21:58

2 stops42h 58m

€395

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 7/1

15:11-07:10

2 stops33h 59m

Dublin

Wed 14/1

09:00-14:30

2 stops35h 30m

€401

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 10/3

11:28-07:30

1 stop15h 02m

Dublin

Wed 18/3

05:10-14:55

1 stop14h 45m

€402

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 8/3

16:05-22:45

2 stops25h 40m

Dublin

Wed 18/3

08:00-15:29

1 stop12h 29m

€403

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 5/12

11:50-07:30

1 stop13h 40m

Dublin

Wed 10/12

09:00-15:29

1 stop12h 29m

€405

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 5/1

18:35-07:10

2 stops30h 35m

Dublin

Wed 14/1

09:00-14:30

2 stops35h 30m

€406

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 10/3

11:28-10:05

2 stops17h 37m

Dublin

Wed 18/3

05:10-14:55

1 stop14h 45m

€408

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 8/1

12:11-11:30

2 stops17h 19m

Shannon

Thu 15/1

07:50-21:15

2 stops19h 25m

€419

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 20/2

18:33-15:45

2 stops15h 12m

Shannon

Tue 24/2

14:45-23:08

2 stops14h 23m

€592

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 €610.

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 €738 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 €540 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 €495Free CancellationRating
7.2
11,046 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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