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Cheap flights from St. Louis to Ireland from €238

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 27/8. 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.
British Airways Logo
21:35 - 14:35
STL
-
DUB
11h 00m
1 stop
British Airways Logo
20:30 - 19:30
DUB
-
STL
29h 00m
1 stop
€402British Airways
Wed, 12 Aug - Mon, 24 Aug
Multiple Airlines Logo
12:10 - 07:45
STL
-
DUB
13h 35m
1 stop
Multiple Airlines Logo
06:00 - 13:25
DUB
-
STL
13h 25m
1 stop
€403Multiple Airlines
Sun, 16 Aug - Tue, 25 Aug
United Airlines Logo
05:10 - 07:45
STL
-
DUB
20h 35m
2 stops
United Airlines Logo
09:20 - 12:13
DUB
-
STL
32h 53m
2 stops
€409United Airlines
Tue, 11 Aug - Wed, 19 Aug
Multiple Airlines Logo
15:30 - 16:50
STL
-
DUB
19h 20m
1 stop
Multiple Airlines Logo
09:20 - 20:02
DUB
-
STL
16h 42m
1 stop
€411Multiple Airlines
Tue, 11 Aug - Wed, 19 Aug
United Airlines Logo
06:00 - 09:45
STL
-
DUB
21h 45m
1 stop
United Airlines Logo
09:20 - 12:13
DUB
-
STL
32h 53m
2 stops
€413United Airlines
Tue, 11 Aug - Wed, 19 Aug
United Airlines Logo
12:10 - 07:45
STL
-
DUB
13h 35m
1 stop
United Airlines Logo
09:50 - 18:32
DUB
-
STL
14h 42m
1 stop
€419United Airlines
Sun, 16 Aug - Tue, 25 Aug
United Airlines Logo
05:10 - 07:45
STL
-
DUB
20h 35m
2 stops
United Airlines Logo
09:20 - 14:02
DUB
-
STL
10h 42m
1 stop
€420United Airlines
Tue, 11 Aug - Wed, 19 Aug
United Airlines Logo
05:00 - 07:45
STL
-
DUB
20h 45m
2 stops
United Airlines Logo
09:50 - 18:32
DUB
-
STL
14h 42m
1 stop
€423United Airlines
Sun, 16 Aug - Tue, 25 Aug
Air Canada Logo
09:16 - 07:45
STL
-
DUB
16h 29m
2 stops
Air Canada Logo
09:50 - 20:02
DUB
-
STL
16h 12m
2 stops
€426Air Canada
Sun, 16 Aug - Tue, 25 Aug
Air Canada Logo
06:15 - 10:15
STL
-
SNN
22h 00m
1 stop
Air Canada Logo
12:30 - 21:13
SNN
-
STL
14h 43m
2 stops
€555Air Canada
Tue, 14 Apr - Tue, 21 Apr

Air Canada flights from St. Louis to Ireland

Our best Air Canada deals on St. Louis to Ireland flight tickets
Air Canada
16 Aug
STL09:16Lambert-St Louis
16h 29m
2 stops
DUB07:45Dublin
25 Aug
DUB09:50Dublin
16h 12m
2 stops
STL20:02Lambert-St Louis
€426
Air Canada
11 Aug
STL14:40Lambert-St Louis
35h 05m
2 stops
DUB07:45Dublin
19 Aug
DUB09:20Dublin
39h 07m
2 stops
STL18:27Lambert-St Louis
€433
Air Canada
14 Aug
STL12:10Lambert-St Louis
13h 35m
1 stop
DUB07:45Dublin
21 Aug
DUB09:20Dublin
39h 07m
2 stops
STL18:27Lambert-St Louis
€469

United Airlines flights from St. Louis to Ireland

Our best United Airlines deals on St. Louis to Ireland flight tickets
United Airlines
11 Aug
STL05:10Lambert-St Louis
20h 35m
2 stops
DUB07:45Dublin
19 Aug
DUB09:20Dublin
32h 53m
2 stops
STL12:13Lambert-St Louis
€409
United Airlines
11 Aug
STL06:00Lambert-St Louis
21h 45m
1 stop
DUB09:45Dublin
19 Aug
DUB09:20Dublin
32h 53m
2 stops
STL12:13Lambert-St Louis
€413
United Airlines
16 Aug
STL12:10Lambert-St Louis
13h 35m
1 stop
DUB07:45Dublin
25 Aug
DUB09:50Dublin
14h 42m
1 stop
STL18:32Lambert-St Louis
€419

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 3 March 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

Wed 12/8

21:35-14:35

1 stop11h 00m

Dublin

Mon 24/8

20:30-19:30

1 stop29h 00m

€402

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 16/8

12:10-07:45

1 stop13h 35m

Dublin

Tue 25/8

06:00-13:25

1 stop13h 25m

€403

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 11/8

05:10-07:45

2 stops20h 35m

Dublin

Wed 19/8

09:20-12:13

2 stops32h 53m

€409

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 11/8

15:30-16:50

1 stop19h 20m

Dublin

Wed 19/8

09:20-20:02

1 stop16h 42m

€411

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 11/8

06:00-09:45

1 stop21h 45m

Dublin

Wed 19/8

09:20-12:13

2 stops32h 53m

€413

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 16/8

12:10-07:45

1 stop13h 35m

Dublin

Tue 25/8

09:50-18:32

1 stop14h 42m

€419

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 11/8

05:10-07:45

2 stops20h 35m

Dublin

Wed 19/8

09:20-14:02

1 stop10h 42m

€420

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 16/8

05:00-07:45

2 stops20h 45m

Dublin

Tue 25/8

09:50-18:32

1 stop14h 42m

€423

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 16/8

09:16-07:45

2 stops16h 29m

Dublin

Tue 25/8

09:50-20:02

2 stops16h 12m

€426

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 14/4

06:15-10:15

1 stop22h 00m

Shannon

Tue 21/4

12:30-21:13

2 stops14h 43m

€555

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 November is another great option to travel to Ireland, with average flight prices from St. Louis averaging around €475.

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 €631 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 €491 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 51m

Direct flights

None
The fastest flight from St. Louis to Ireland takes 10h 51m
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 €486Free CancellationRating
7.1
11,375 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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