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Cheap flights from St. Louis to Ireland from €233

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 27/5. 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.
Air Canada Logo
18:40 - 07:10
STL
-
DUB
30h 30m2 stops
Air Canada Logo
09:00 - 15:15
DUB
-
STL
12h 15m1 stop
€318Air Canada
Mon, 19 Jan - Wed, 4 Feb
British Airways Logo
21:35 - 14:40
STL
-
DUB
11h 05m1 stop
British Airways Logo
08:35 - 19:30
DUB
-
STL
16h 55m1 stop
€345British Airways
Wed, 22 Apr - Fri, 1 May
British Airways Logo
13:29 - 10:15
STL
-
DUB
14h 46m2 stops
British Airways Logo
08:40 - 19:30
DUB
-
STL
16h 50m1 stop
€349British Airways
Tue, 14 Apr - Wed, 22 Apr
British Airways Logo
21:35 - 14:40
STL
-
DUB
11h 05m1 stop
British Airways Logo
08:35 - 19:30
DUB
-
STL
16h 55m1 stop
€350British Airways
Wed, 22 Apr - Fri, 1 May
British Airways Logo
13:35 - 11:15
STL
-
DUB
15h 40m2 stops
British Airways Logo
10:00 - 20:13
DUB
-
STL
16h 13m2 stops
€350British Airways
Mon, 19 Jan - Wed, 4 Feb
British Airways Logo
13:29 - 11:15
STL
-
DUB
15h 46m2 stops
British Airways Logo
12:00 - 19:30
DUB
-
STL
13h 30m1 stop
€352British Airways
Tue, 14 Apr - Wed, 22 Apr
British Airways Logo
21:35 - 15:45
STL
-
DUB
12h 10m1 stop
British Airways Logo
12:00 - 22:14
DUB
-
STL
16h 14m2 stops
€354British Airways
Wed, 22 Apr - Wed, 29 Apr
United Airlines Logo
13:15 - 08:10
STL
-
DUB
12h 55m1 stop
United Airlines Logo
09:00 - 15:15
DUB
-
STL
12h 15m1 stop
€356United Airlines
Mon, 19 Jan - Wed, 4 Feb
American Airlines Logo
13:35 - 11:30
STL
-
SNN
15h 55m2 stops
American Airlines Logo
14:45 - 11:29
SNN
-
STL
26h 44m1 stop
€373American Airlines
Mon, 9 Feb - Tue, 3 Mar
American Airlines Logo
12:11 - 06:20
STL
-
SNN
12h 09m1 stop
American Airlines Logo
14:45 - 11:29
SNN
-
STL
26h 44m1 stop
€381American Airlines
Mon, 9 Feb - Tue, 3 Mar

British Airways flights from St. Louis to Ireland

Our best British Airways deals on St. Louis to Ireland flight tickets
British Airways
22 Apr
STL21:35Lambert-St Louis
11h 05m
1 stop
DUB14:40Dublin
1 May
DUB08:35Dublin
16h 55m
1 stop
STL19:30Lambert-St Louis
€345
British Airways
14 Apr
STL13:29Lambert-St Louis
14h 46m
2 stops
DUB10:15Dublin
22 Apr
DUB08:40Dublin
16h 50m
1 stop
STL19:30Lambert-St Louis
€349
British Airways
22 Apr
STL21:35Lambert-St Louis
11h 05m
1 stop
DUB14:40Dublin
1 May
DUB08:35Dublin
16h 55m
1 stop
STL19:30Lambert-St Louis
€350

Iberia flights from St. Louis to Ireland

Our best Iberia deals on St. Louis to Ireland flight tickets
Iberia
26 Feb
STL14:00Lambert-St Louis
12h 40m
1 stop
DUB08:40Dublin
2 Mar
DUB09:40Dublin
29h 15m
2 stops
STL08:55Lambert-St Louis
€399
Iberia
13 Jan
STL09:33Lambert-St Louis
17h 07m
1 stop
DUB08:40Dublin
15 Jan
DUB11:30Dublin
17h 14m
1 stop
STL22:44Lambert-St Louis
€797

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 9 January 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

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 19/1

18:40-07:10

2 stops30h 30m

Dublin

Wed 4/2

09:00-15:15

1 stop12h 15m

€318

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 22/4

21:35-14:40

1 stop11h 05m

Dublin

Fri 1/5

08:35-19:30

1 stop16h 55m

€345

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 14/4

13:29-10:15

2 stops14h 46m

Dublin

Wed 22/4

08:40-19:30

1 stop16h 50m

€349

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 22/4

21:35-14:40

1 stop11h 05m

Dublin

Fri 1/5

08:35-19:30

1 stop16h 55m

€350

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 19/1

13:35-11:15

2 stops15h 40m

Dublin

Wed 4/2

10:00-20:13

2 stops16h 13m

€350

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 14/4

13:29-11:15

2 stops15h 46m

Dublin

Wed 22/4

12:00-19:30

1 stop13h 30m

€352

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 22/4

21:35-15:45

1 stop12h 10m

Dublin

Wed 29/4

12:00-22:14

2 stops16h 14m

€354

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 19/1

13:15-08:10

1 stop12h 55m

Dublin

Wed 4/2

09:00-15:15

1 stop12h 15m

€356

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 9/2

13:35-11:30

2 stops15h 55m

Shannon

Tue 3/3

14:45-11:29

1 stop26h 44m

€373

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 9/2

12:11-06:20

1 stop12h 09m

Shannon

Tue 3/3

14:45-11:29

1 stop26h 44m

€381

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 January is another great option to travel to Ireland, with average flight prices from St. Louis averaging around €549.

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 €693 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 €527 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

11h 05m

Direct flights

None
The fastest flight from St. Louis to Ireland takes 11h 05m
There are no direct flights from St. Louis to Ireland. There are no popular flight routes from St. Louis to Ireland.
Search flight deals

  • 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
11,103 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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