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Cheap flights from St. Louis to Ireland from €263

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 18/3. 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
13:11 - 08:10
STL
-
DUB
12h 59m
1 stop
United Airlines Logo
09:00 - 20:23
DUB
-
STL
41h 23m
2 stops
€383United Airlines
Wed, 18 Feb - Fri, 27 Feb
United Airlines Logo
09:10 - 09:45
STL
-
DUB
18h 35m
1 stop
United Airlines Logo
09:50 - 22:30
DUB
-
STL
42h 40m
2 stops
€386United Airlines
Wed, 29 Apr - Tue, 5 May
United Airlines Logo
07:41 - 07:30
STL
-
DUB
17h 49m
2 stops
United Airlines Logo
09:00 - 20:23
DUB
-
STL
41h 23m
2 stops
€387United Airlines
Wed, 18 Feb - Fri, 27 Feb
British Airways Logo
09:37 - 09:40
STL
-
DUB
18h 03m
2 stops
British Airways Logo
20:40 - 17:13
DUB
-
STL
26h 33m
2 stops
€389British Airways
Wed, 25 Feb - Wed, 4 Mar
United Airlines Logo
11:15 - 07:20
STL
-
DUB
14h 05m
2 stops
United Airlines Logo
09:50 - 22:30
DUB
-
STL
42h 40m
2 stops
€390United Airlines
Wed, 29 Apr - Tue, 5 May
British Airways Logo
11:50 - 09:50
STL
-
DUB
16h 00m
2 stops
British Airways Logo
20:35 - 22:52
DUB
-
STL
32h 17m
2 stops
€391British Airways
Sat, 28 Feb - Fri, 6 Mar
British Airways Logo
06:00 - 10:00
STL
-
DUB
22h 00m
2 stops
British Airways Logo
08:50 - 23:04
DUB
-
STL
20h 14m
2 stops
€392British Airways
Fri, 27 Feb - Tue, 3 Mar
British Airways Logo
08:53 - 09:40
STL
-
DUB
18h 47m
2 stops
British Airways Logo
08:35 - 19:30
DUB
-
STL
16h 55m
1 stop
€393British Airways
Tue, 14 Apr - Wed, 22 Apr
Delta Logo
07:20 - 11:10
STL
-
SNN
21h 50m
2 stops
Delta Logo
13:05 - 23:38
SNN
-
STL
16h 33m
2 stops
€523Delta
Sun, 24 May - Tue, 2 Jun
Delta Logo
12:00 - 11:10
STL
-
SNN
17h 10m
1 stop
Delta Logo
13:05 - 20:50
SNN
-
STL
13h 45m
1 stop
€570Delta
Sun, 24 May - Mon, 8 Jun

British Airways flights from St. Louis to Ireland

Our best British Airways deals on St. Louis to Ireland flight tickets
British Airways
25 Feb
STL09:37Lambert-St Louis
18h 03m
2 stops
DUB09:40Dublin
4 Mar
DUB20:40Dublin
26h 33m
2 stops
STL17:13Lambert-St Louis
€389
British Airways
28 Feb
STL11:50Lambert-St Louis
16h 00m
2 stops
DUB09:50Dublin
6 Mar
DUB20:35Dublin
32h 17m
2 stops
STL22:52Lambert-St Louis
€391
British Airways
27 Feb
STL06:00Lambert-St Louis
22h 00m
2 stops
DUB10:00Dublin
3 Mar
DUB08:50Dublin
20h 14m
2 stops
STL23:04Lambert-St Louis
€392

Delta flights from St. Louis to Ireland

Our best Delta deals on St. Louis to Ireland flight tickets
Delta
26 Feb
STL06:35Lambert-St Louis
19h 10m
2 stops
DUB07:45Dublin
3 Mar
DUB08:50Dublin
17h 53m
2 stops
STL20:43Lambert-St Louis
€408
Delta
9 Feb
STL18:57Lambert-St Louis
14h 48m
2 stops
DUB15:45Dublin
17 Feb
DUB08:50Dublin
17h 53m
2 stops
STL20:43Lambert-St Louis
€408
Delta
14 Apr
STL06:48Lambert-St Louis
19h 07m
2 stops
DUB07:55Dublin
22 Apr
DUB05:55Dublin
16h 47m
2 stops
STL16:42Lambert-St Louis
€410

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 29 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

13:11-08:10

1 stop12h 59m

Dublin

Fri 27/2

09:00-20:23

2 stops41h 23m

€383

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 29/4

09:10-09:45

1 stop18h 35m

Dublin

Tue 5/5

09:50-22:30

2 stops42h 40m

€386

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 18/2

07:41-07:30

2 stops17h 49m

Dublin

Fri 27/2

09:00-20:23

2 stops41h 23m

€387

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 25/2

09:37-09:40

2 stops18h 03m

Dublin

Wed 4/3

20:40-17:13

2 stops26h 33m

€389

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 29/4

11:15-07:20

2 stops14h 05m

Dublin

Tue 5/5

09:50-22:30

2 stops42h 40m

€390

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 28/2

11:50-09:50

2 stops16h 00m

Dublin

Fri 6/3

20:35-22:52

2 stops32h 17m

€391

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 27/2

06:00-10:00

2 stops22h 00m

Dublin

Tue 3/3

08:50-23:04

2 stops20h 14m

€392

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 14/4

08:53-09:40

2 stops18h 47m

Dublin

Wed 22/4

08:35-19:30

1 stop16h 55m

€393

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 24/5

07:20-11:10

2 stops21h 50m

Shannon

Tue 2/6

13:05-23:38

2 stops16h 33m

€523

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 24/5

12:00-11:10

1 stop17h 10m

Shannon

Mon 8/6

13:05-20:50

1 stop13h 45m

€570

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 €534.

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 €660 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 €501 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 55m

Direct flights

None
The fastest flight from St. Louis to Ireland takes 10h 55m
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 €476Free CancellationRating
7.2
11,205 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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