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Cheap flights from St. Louis to Ireland from €172

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 2/2. 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
06:25 - 08:10
STL
-
DUB
19h 45m
1 stop
United Airlines Logo
09:00 - 10:36
DUB
-
STL
31h 36m
2 stops
€347United Airlines
Wed, 18 Feb - Wed, 4 Mar
British Airways Logo
14:19 - 10:15
STL
-
DUB
13h 56m
2 stops
British Airways Logo
08:45 - 21:12
DUB
-
STL
18h 27m
2 stops
€350British Airways
Wed, 18 Feb - Wed, 4 Mar
British Airways Logo
12:27 - 10:15
STL
-
DUB
15h 48m
2 stops
British Airways Logo
12:00 - 19:30
DUB
-
STL
13h 30m
1 stop
€354British Airways
Tue, 14 Apr - Wed, 22 Apr
United Airlines Logo
11:25 - 08:10
STL
-
DUB
14h 45m
1 stop
United Airlines Logo
09:00 - 15:29
DUB
-
STL
12h 29m
1 stop
€358United Airlines
Wed, 18 Feb - Wed, 4 Mar
American Airlines Logo
14:00 - 09:10
STL
-
DUB
13h 10m
2 stops
American Airlines Logo
15:20 - 23:48
DUB
-
STL
13h 28m
1 stop
€361American Airlines
Tue, 3 Mar - Tue, 10 Mar
British Airways Logo
14:00 - 09:10
STL
-
DUB
13h 10m
2 stops
British Airways Logo
20:40 - 17:13
DUB
-
STL
25h 33m
2 stops
€364British Airways
Tue, 3 Mar - Tue, 10 Mar
United Airlines Logo
10:00 - 07:20
STL
-
DUB
15h 20m
2 stops
United Airlines Logo
09:50 - 15:24
DUB
-
STL
11h 34m
1 stop
€366United Airlines
Wed, 8 Apr - Thu, 16 Apr
American Airlines Logo
14:29 - 10:35
STL
-
DUB
14h 06m
1 stop
American Airlines Logo
16:45 - 22:14
DUB
-
STL
11h 29m
1 stop
€373American Airlines
Wed, 8 Apr - Thu, 16 Apr
Multiple Airlines Logo
16:05 - 11:30
STL
-
SNN
14h 25m
2 stops
Multiple Airlines Logo
12:00 - 13:25
SNN
-
STL
31h 25m
1 stop
€536Multiple Airlines
Wed, 25 Mar - Sat, 4 Apr
Multiple Airlines Logo
16:50 - 17:00
STL
-
KIR
19h 10m
2 stops
Multiple Airlines Logo
10:25 - 15:29
KIR
-
STL
34h 04m
3 stops
€1,047Multiple Airlines
Sun, 8 Mar - Sun, 15 Mar

United Airlines flights from St. Louis to Ireland

Our best United Airlines deals on St. Louis to Ireland flight tickets
United Airlines
18 Feb
STL06:25Lambert-St Louis
19h 45m
1 stop
DUB08:10Dublin
4 Mar
DUB09:00Dublin
31h 36m
2 stops
STL10:36Lambert-St Louis
€347
United Airlines
18 Feb
STL11:25Lambert-St Louis
14h 45m
1 stop
DUB08:10Dublin
4 Mar
DUB09:00Dublin
12h 29m
1 stop
STL15:29Lambert-St Louis
€358
United Airlines
8 Apr
STL10:00Lambert-St Louis
15h 20m
2 stops
DUB07:20Dublin
16 Apr
DUB09:50Dublin
11h 34m
1 stop
STL15:24Lambert-St Louis
€366

British Airways flights from St. Louis to Ireland

Our best British Airways deals on St. Louis to Ireland flight tickets
British Airways
18 Feb
STL14:19Lambert-St Louis
13h 56m
2 stops
DUB10:15Dublin
4 Mar
DUB08:45Dublin
18h 27m
2 stops
STL21:12Lambert-St Louis
€350
British Airways
14 Apr
STL12:27Lambert-St Louis
15h 48m
2 stops
DUB10:15Dublin
22 Apr
DUB12:00Dublin
13h 30m
1 stop
STL19:30Lambert-St Louis
€354
British Airways
3 Mar
STL14:00Lambert-St Louis
13h 10m
2 stops
DUB09:10Dublin
10 Mar
DUB20:40Dublin
25h 33m
2 stops
STL17:13Lambert-St Louis
€364

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 23 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

Wed 18/2

06:25-08:10

1 stop19h 45m

Dublin

Wed 4/3

09:00-10:36

2 stops31h 36m

€347

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 18/2

14:19-10:15

2 stops13h 56m

Dublin

Wed 4/3

08:45-21:12

2 stops18h 27m

€350

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 14/4

12:27-10:15

2 stops15h 48m

Dublin

Wed 22/4

12:00-19:30

1 stop13h 30m

€354

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 18/2

11:25-08:10

1 stop14h 45m

Dublin

Wed 4/3

09:00-15:29

1 stop12h 29m

€358

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 3/3

14:00-09:10

2 stops13h 10m

Dublin

Tue 10/3

15:20-23:48

1 stop13h 28m

€361

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 3/3

14:00-09:10

2 stops13h 10m

Dublin

Tue 10/3

20:40-17:13

2 stops25h 33m

€364

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 8/4

10:00-07:20

2 stops15h 20m

Dublin

Thu 16/4

09:50-15:24

1 stop11h 34m

€366

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 8/4

14:29-10:35

1 stop14h 06m

Dublin

Thu 16/4

16:45-22:14

1 stop11h 29m

€373

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

16:05-11:30

2 stops14h 25m

Shannon

Sat 4/4

12:00-13:25

1 stop31h 25m

€536

St. LouisMilltown (Kerry)

STL - KIR

STLKIR

Lambert-St Louis

Sun 8/3

16:50-17:00

2 stops19h 10m

Milltown (Kerry)

Sun 15/3

10:25-15:29

3 stops34h 04m

€1,047

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 €543.

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 €671 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 €510 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 59m

Direct flights

None
The fastest flight from St. Louis to Ireland takes 10h 59m
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 €485Free CancellationRating
7.2
11,177 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

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom €38
Flights to Corkfrom €88
Flights to Shannon, Clarefrom €84
Flights to Donegalfrom €74
Flights to Milltown (Kerry)from €38