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Cheap flights from St. Louis to Ireland from €197

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 8/9. 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
1 adult, Economy, 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.
Aer Lingus Logo
16:05 - 05:10
STL
-
DUB
31h 05m
1 stop
Aer Lingus Logo
13:00 - 15:26
DUB
-
STL
32h 26m
1 stop
€297Aer Lingus
Sun, 15 Nov - Tue, 24 Nov
Aer Lingus Logo
16:05 - 05:10
STL
-
DUB
31h 05m
1 stop
Aer Lingus Logo
13:00 - 15:26
DUB
-
STL
32h 26m
1 stop
€317Aer Lingus
Mon, 9 Nov - Wed, 18 Nov
Aer Lingus Logo
08:55 - 05:10
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
13:20 - 20:24
DUB
-
STL
13h 04m
1 stop
€319Aer Lingus
Mon, 10 Aug - Fri, 21 Aug
Aer Lingus Logo
08:55 - 05:10
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
13:20 - 20:20
DUB
-
STL
13h 00m
1 stop
€327Aer Lingus
Tue, 8 Sep - Tue, 15 Sep
Aer Lingus Logo
08:55 - 05:10
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
13:20 - 14:02
DUB
-
STL
30h 42m
1 stop
€333Aer Lingus
Tue, 11 Aug - Wed, 19 Aug
Aer Lingus Logo
08:55 - 05:10
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
13:20 - 14:02
DUB
-
STL
30h 42m
1 stop
€334Aer Lingus
Tue, 11 Aug - Wed, 19 Aug
Aer Lingus Logo
08:55 - 05:10
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
13:20 - 20:24
DUB
-
STL
13h 04m
1 stop
€344Aer Lingus
Fri, 14 Aug - Fri, 21 Aug
Aer Lingus Logo
08:55 - 05:10
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
13:20 - 14:02
DUB
-
STL
30h 42m
1 stop
€362Aer Lingus
Thu, 13 Aug - Thu, 20 Aug
United Airlines Logo
16:50 - 10:15
STL
-
SNN
11h 25m
1 stop
United Airlines Logo
09:30 - 15:38
SNN
-
STL
12h 08m
1 stop
€681United Airlines
Sun, 16 Aug - Fri, 28 Aug
United Airlines Logo
09:30 - 10:15
STL
-
SNN
18h 45m
2 stops
United Airlines Logo
09:30 - 15:38
SNN
-
STL
12h 08m
1 stop
€685United Airlines
Sun, 16 Aug - Fri, 28 Aug

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Aer Lingus flights from St. Louis to Ireland

Our best Aer Lingus deals on St. Louis to Ireland flight tickets
Aer Lingus
15 Nov
STL16:05Lambert-St Louis
31h 05m
1 stop
DUB05:10Dublin
24 Nov
DUB13:00Dublin
32h 26m
1 stop
STL15:26Lambert-St Louis
€297
Aer Lingus
9 Nov
STL16:05Lambert-St Louis
31h 05m
1 stop
DUB05:10Dublin
18 Nov
DUB13:00Dublin
32h 26m
1 stop
STL15:26Lambert-St Louis
€317
Aer Lingus
10 Aug
STL08:55Lambert-St Louis
14h 15m
1 stop
DUB05:10Dublin
21 Aug
DUB13:20Dublin
13h 04m
1 stop
STL20:24Lambert-St Louis
€319

United Airlines flights from St. Louis to Ireland

Our best United Airlines deals on St. Louis to Ireland flight tickets
United Airlines
25 Oct
STL07:33Lambert-St Louis
19h 37m
1 stop
DUB08:10Dublin
6 Nov
DUB09:00Dublin
31h 41m
2 stops
STL10:41Lambert-St Louis
€594
United Airlines
25 Oct
STL06:15Lambert-St Louis
20h 15m
2 stops
DUB07:30Dublin
6 Nov
DUB09:00Dublin
31h 41m
2 stops
STL10:41Lambert-St Louis
€597
United Airlines
8 Dec
STL11:45Lambert-St Louis
13h 45m
1 stop
DUB07:30Dublin
15 Dec
DUB09:00Dublin
12h 26m
1 stop
STL15:26Lambert-St Louis
€605

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 19 July 2026.
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

Cheapest return flight

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 15/11

16:05-05:10

1 stop31h 05m

Dublin

Tue 24/11

13:00-15:26

1 stop32h 26m

€297

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 9/11

16:05-05:10

1 stop31h 05m

Dublin

Wed 18/11

13:00-15:26

1 stop32h 26m

€317

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 10/8

08:55-05:10

1 stop14h 15m

Dublin

Fri 21/8

13:20-20:24

1 stop13h 04m

€319

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 8/9

08:55-05:10

1 stop14h 15m

Dublin

Tue 15/9

13:20-20:20

1 stop13h 00m

€327

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 11/8

08:55-05:10

1 stop14h 15m

Dublin

Wed 19/8

13:20-14:02

1 stop30h 42m

€333

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 11/8

08:55-05:10

1 stop14h 15m

Dublin

Wed 19/8

13:20-14:02

1 stop30h 42m

€334

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 14/8

08:55-05:10

1 stop14h 15m

Dublin

Fri 21/8

13:20-20:24

1 stop13h 04m

€344

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 13/8

08:55-05:10

1 stop14h 15m

Dublin

Thu 20/8

13:20-14:02

1 stop30h 42m

€362
Fastest return journey

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 16/8

16:50-10:15

1 stop11h 25m

Shannon

Fri 28/8

09:30-15:38

1 stop12h 08m

€681

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 16/8

09:30-10:15

2 stops18h 45m

Shannon

Fri 28/8

09:30-15:38

1 stop12h 08m

€685

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 January is another great option to travel to Ireland, with average flight prices from St. Louis averaging around €464.

How far in advance should I book a flight from St. Louis 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 €663 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 €508 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

10h 37m

Direct flights

None
The fastest flight from St. Louis to Ireland takes 10h 37m
There are no direct flights from St. Louis to Ireland. There are no popular flight routes from St. Louis to Ireland.
Search flight deals

Frequently asked questions about flying from St. Louis to Ireland

  • 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.

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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