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Cheap flights from St. Louis to Ireland from €228

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 17/8. 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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Find the cheapest flights from St. Louis to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
18:55 - 09:45
STL
-
DUB
32h 50m
1 stop
United Airlines Logo
09:50 - 12:49
DUB
-
STL
32h 59m
2 stops
€459United Airlines
Sat, 15 Aug - Tue, 25 Aug
United Airlines Logo
17:32 - 07:45
STL
-
DUB
32h 13m
2 stops
United Airlines Logo
09:50 - 12:49
DUB
-
STL
32h 59m
2 stops
€461United Airlines
Sat, 15 Aug - Tue, 25 Aug
British Airways Logo
21:40 - 19:35
STL
-
DUB
15h 55m
1 stop
British Airways Logo
10:30 - 19:30
DUB
-
STL
15h 00m
1 stop
€469British Airways
Sun, 16 Aug - Tue, 25 Aug
United Airlines Logo
12:30 - 07:30
STL
-
DUB
13h 00m
1 stop
United Airlines Logo
09:20 - 18:41
DUB
-
STL
15h 21m
1 stop
€470United Airlines
Tue, 1 Sep - Thu, 17 Sep
United Airlines Logo
05:10 - 07:45
STL
-
DUB
20h 35m
2 stops
United Airlines Logo
09:20 - 20:02
DUB
-
STL
16h 42m
1 stop
€471United Airlines
Tue, 11 Aug - Wed, 19 Aug
Multiple Airlines Logo
21:35 - 19:30
STL
-
DUB
15h 55m
1 stop
Multiple Airlines Logo
09:40 - 23:20
DUB
-
STL
19h 40m
2 stops
€472Multiple Airlines
Wed, 12 Aug - Wed, 9 Sep
Air Canada Logo
05:00 - 07:45
STL
-
DUB
20h 45m
2 stops
Air Canada Logo
09:20 - 18:41
DUB
-
STL
15h 21m
1 stop
€473Air Canada
Wed, 2 Sep - Tue, 15 Sep
Multiple Airlines Logo
21:35 - 14:35
STL
-
DUB
11h 00m
1 stop
Multiple Airlines Logo
12:40 - 23:03
DUB
-
STL
16h 23m
1 stop
€475Multiple Airlines
Wed, 12 Aug - Wed, 19 Aug
Air Canada Logo
12:10 - 08:15
STL
-
DUB
14h 05m
2 stops
Air Canada Logo
09:50 - 18:42
DUB
-
STL
14h 52m
1 stop
€476Air Canada
Sun, 16 Aug - Tue, 25 Aug
KLM Logo
19:05 - 11:10
STL
-
SNN
34h 05m
2 stops
KLM Logo
13:05 - 23:37
SNN
-
STL
16h 32m
2 stops
€531KLM
Sun, 16 Aug - Fri, 28 Aug

United Airlines flights from St. Louis to Ireland

Our best United Airlines deals on St. Louis to Ireland flight tickets
United Airlines
15 Aug
STL18:55Lambert-St Louis
32h 50m
1 stop
DUB09:45Dublin
25 Aug
DUB09:50Dublin
32h 59m
2 stops
STL12:49Lambert-St Louis
€459
United Airlines
15 Aug
STL17:32Lambert-St Louis
32h 13m
2 stops
DUB07:45Dublin
25 Aug
DUB09:50Dublin
32h 59m
2 stops
STL12:49Lambert-St Louis
€461
United Airlines
1 Sept
STL12:30Lambert-St Louis
13h 00m
1 stop
DUB07:30Dublin
15 Sept
DUB09:20Dublin
15h 21m
1 stop
STL18:41Lambert-St Louis
€470

Air Canada flights from St. Louis to Ireland

Our best Air Canada deals on St. Louis to Ireland flight tickets
Air Canada
2 Sept
STL05:00Lambert-St Louis
20h 45m
2 stops
DUB07:45Dublin
15 Sept
DUB09:20Dublin
15h 21m
1 stop
STL18:41Lambert-St Louis
€473
Air Canada
16 Aug
STL12:10Lambert-St Louis
14h 05m
2 stops
DUB08:15Dublin
25 Aug
DUB09:50Dublin
14h 52m
1 stop
STL18:42Lambert-St Louis
€476
Air Canada
2 Sept
STL08:55Lambert-St Louis
17h 20m
1 stop
DUB08:15Dublin
16 Sept
DUB09:20Dublin
10h 40m
1 stop
STL14:00Lambert-St Louis
€478

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 13 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

Cheapest return flight

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 15/8

18:55-09:45

1 stop32h 50m

Dublin

Tue 25/8

09:50-12:49

2 stops32h 59m

€459

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 15/8

17:32-07:45

2 stops32h 13m

Dublin

Tue 25/8

09:50-12:49

2 stops32h 59m

€461

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 16/8

21:40-19:35

1 stop15h 55m

Dublin

Tue 25/8

10:30-19:30

1 stop15h 00m

€469

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 1/9

12:30-07:30

1 stop13h 00m

Dublin

Thu 17/9

09:20-18:41

1 stop15h 21m

€470

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 11/8

05:10-07:45

2 stops20h 35m

Dublin

Wed 19/8

09:20-20:02

1 stop16h 42m

€471

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 12/8

21:35-19:30

1 stop15h 55m

Dublin

Wed 9/9

09:40-23:20

2 stops19h 40m

€472

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 2/9

05:00-07:45

2 stops20h 45m

Dublin

Tue 15/9

09:20-18:41

1 stop15h 21m

€473
Fastest return journey

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 12/8

21:35-14:35

1 stop11h 00m

Dublin

Wed 19/8

12:40-23:03

1 stop16h 23m

€475

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 16/8

12:10-08:15

2 stops14h 05m

Dublin

Tue 25/8

09:50-18:42

1 stop14h 52m

€476

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 16/8

19:05-11:10

2 stops34h 05m

Shannon

Fri 28/8

13:05-23:37

2 stops16h 32m

€531

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 February is another great option to travel to Ireland, with average flight prices from St. Louis averaging around €471.

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 €634 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 €495 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 04m

Direct flights

None
The fastest flight from St. Louis to Ireland takes 10h 04m
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 €494Free CancellationRating
7.1
11,449 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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