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Cheap flights from St. Louis to Ireland from €250

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 7/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Multiple Airlines Logo
09:00 - 07:45STL-DUB
16h 45m1 stop
Multiple Airlines Logo
10:45 - 16:35DUB-STL
11h 50m1 stop
€374Multiple Airlines
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Tue, 2 Dec - Wed, 10 Dec
Delta Logo
06:39 - 07:45STL-DUB
19h 06m2 stops
Delta Logo
10:45 - 20:47DUB-STL
16h 02m2 stops
€379Delta
Find Deal
Tue, 2 Dec - Wed, 10 Dec
United Airlines Logo
17:24 - 08:10STL-DUB
32h 46m1 stop
United Airlines Logo
09:00 - 12:15DUB-STL
33h 15m2 stops
€393United Airlines
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Mon, 1 Dec - Mon, 8 Dec
United Airlines Logo
08:45 - 08:10STL-DUB
17h 25m2 stops
United Airlines Logo
09:00 - 20:58DUB-STL
41h 58m2 stops
€398United Airlines
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Sat, 10 Jan - Sat, 17 Jan
American Airlines Logo
14:54 - 10:15STL-DUB
13h 21m2 stops
American Airlines Logo
06:40 - 18:03DUB-STL
17h 23m2 stops
€416American Airlines
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Thu, 5 Feb - Sat, 14 Feb
British Airways Logo
22:00 - 17:30STL-DUB
13h 30m1 stop
British Airways Logo
10:55 - 19:30DUB-STL
14h 35m1 stop
€436British Airways
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Wed, 22 Apr - Wed, 6 May
Iberia Logo
11:05 - 08:55STL-DUB
39h 50m2 stops
Iberia Logo
09:40 - 09:03DUB-STL
29h 23m2 stops
€441Iberia
Find Deal
Sat, 10 Jan - Sat, 17 Jan
British Airways Logo
22:00 - 19:35STL-DUB
15h 35m1 stop
British Airways Logo
20:55 - 19:30DUB-STL
28h 35m1 stop
€450British Airways
Find Deal
Sun, 3 May - Mon, 11 May
American Airlines Logo
18:29 - 16:10STL-SNN
15h 41m2 stops
American Airlines Logo
07:40 - 21:48SNN-STL
20h 08m2 stops
€504American Airlines
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Thu, 2 Apr - Wed, 8 Apr
Iberia Logo
11:41 - 07:15STL-DUB
13h 34m1 stop
Iberia Logo
11:30 - 22:44DUB-STL
17h 14m1 stop
€504Iberia
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Tue, 30 Dec - Fri, 9 Jan

Delta flights from St. Louis to Ireland

Our best Delta deals on St. Louis to Ireland flight tickets
Delta
2 Dec
STL06:39Lambert-St Louis
19h 06m
2 stops
DUB07:45Dublin
10 Dec
DUB10:45Dublin
16h 02m
2 stops
STL20:47Lambert-St Louis
€379
Find similar
Delta
3 Dec
STL09:30Lambert-St Louis
16h 15m
1 stop
DUB07:45Dublin
7 Dec
DUB09:45Dublin
12h 21m
1 stop
STL16:06Lambert-St Louis
€396
Find similar
Delta
13 Nov
STL10:45Lambert-St Louis
16h 00m
2 stops
DUB08:45Dublin
20 Nov
DUB10:45Dublin
11h 48m
1 stop
STL16:33Lambert-St Louis
€400
Find similar

United Airlines flights from St. Louis to Ireland

Our best United Airlines deals on St. Louis to Ireland flight tickets
United Airlines
1 Dec
STL17:24Lambert-St Louis
32h 46m
1 stop
DUB08:10Dublin
8 Dec
DUB09:00Dublin
33h 15m
2 stops
STL12:15Lambert-St Louis
€393
Find similar
United Airlines
10 Jan
STL08:45Lambert-St Louis
17h 25m
2 stops
DUB08:10Dublin
17 Jan
DUB09:00Dublin
41h 58m
2 stops
STL20:58Lambert-St Louis
€398
Find similar
United Airlines
1 Dec
STL17:24Lambert-St Louis
31h 46m
2 stops
DUB07:10Dublin
8 Dec
DUB09:00Dublin
37h 28m
2 stops
STL16:28Lambert-St Louis
€399
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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 8 November 2025.
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

Tue 2/12

09:00-07:45

1 stop16h 45m

Dublin

Wed 10/12

10:45-16:35

1 stop11h 50m

€374

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 2/12

06:39-07:45

2 stops19h 06m

Dublin

Wed 10/12

10:45-20:47

2 stops16h 02m

€379

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 1/12

17:24-08:10

1 stop32h 46m

Dublin

Mon 8/12

09:00-12:15

2 stops33h 15m

€393

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 10/1

08:45-08:10

2 stops17h 25m

Dublin

Sat 17/1

09:00-20:58

2 stops41h 58m

€398

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Thu 5/2

14:54-10:15

2 stops13h 21m

Dublin

Sat 14/2

06:40-18:03

2 stops17h 23m

€416

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 22/4

22:00-17:30

1 stop13h 30m

Dublin

Wed 6/5

10:55-19:30

1 stop14h 35m

€436

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 10/1

11:05-08:55

2 stops39h 50m

Dublin

Sat 17/1

09:40-09:03

2 stops29h 23m

€441

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 3/5

22:00-19:35

1 stop15h 35m

Dublin

Mon 11/5

20:55-19:30

1 stop28h 35m

€450

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 2/4

18:29-16:10

2 stops15h 41m

Shannon

Wed 8/4

07:40-21:48

2 stops20h 08m

€504

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 30/12

11:41-07:15

1 stop13h 34m

Dublin

Fri 9/1

11:30-22:44

1 stop17h 14m

€504

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 September is another great option to travel to Ireland, with average flight prices from St. Louis averaging around €607.

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 €732 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 €538 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

Direct flights

None
There are no direct flights from St. Louis to Ireland. There are no popular flight routes from St. Louis to Ireland.
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  • 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 €493Free CancellationRating
7.2
11,050 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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