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Cheap flights from St. Louis to Ireland from €264

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 15/1. 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.
KLM Logo
16:30 - 08:45STL-DUB
10h 15m1 stop
KLM Logo
09:45 - 16:07DUB-STL
12h 22m1 stop
€373KLM
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Sun, 9 Nov - Wed, 19 Nov
KLM Logo
12:49 - 07:45STL-DUB
12h 56m1 stop
KLM Logo
09:45 - 16:49DUB-STL
13h 04m1 stop
€374KLM
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Tue, 2 Dec - Tue, 9 Dec
Delta Logo
06:39 - 07:45STL-DUB
19h 06m2 stops
Delta Logo
10:45 - 20:47DUB-STL
16h 02m2 stops
€377Delta
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Tue, 2 Dec - Tue, 9 Dec
Multiple Airlines Logo
16:32 - 08:45STL-DUB
10h 13m1 stop
Multiple Airlines Logo
06:00 - 17:10DUB-STL
17h 10m2 stops
€389Multiple Airlines
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Wed, 3 Dec - Thu, 11 Dec
Delta Logo
06:39 - 08:45STL-DUB
20h 06m2 stops
Delta Logo
08:45 - 23:42DUB-STL
20h 57m2 stops
€394Delta
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Wed, 3 Dec - Thu, 11 Dec
Multiple Airlines Logo
18:06 - 07:10STL-DUB
31h 04m2 stops
Multiple Airlines Logo
05:00 - 15:29DUB-STL
40h 29m2 stops
€414Multiple Airlines
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Sat, 31 Jan - Thu, 12 Feb
United Airlines Logo
16:49 - 07:10STL-DUB
32h 21m2 stops
United Airlines Logo
10:40 - 16:02DUB-STL
11h 22m1 stop
€422United Airlines
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Sat, 31 Jan - Thu, 12 Feb
United Airlines Logo
08:00 - 08:10STL-DUB
18h 10m1 stop
United Airlines Logo
09:00 - 15:29DUB-STL
12h 29m1 stop
€425United Airlines
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Fri, 5 Dec - Fri, 12 Dec
American Airlines Logo
14:54 - 10:15STL-DUB
13h 21m2 stops
American Airlines Logo
11:30 - 22:44DUB-STL
17h 14m1 stop
€430American Airlines
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Fri, 9 Jan - Tue, 13 Jan
American Airlines Logo
14:54 - 10:15STL-DUB
13h 21m2 stops
American Airlines Logo
11:30 - 23:12DUB-STL
17h 42m2 stops
€434American Airlines
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Fri, 9 Jan - Tue, 13 Jan

Lufthansa flights from St. Louis to Ireland

Our best Lufthansa deals on St. Louis to Ireland flight tickets
Lufthansa
5 Nov
STL15:50Lambert-St Louis
24h 55m
1 stop
DUB22:45Dublin
12 Nov
DUB05:10Dublin
14h 45m
1 stop
STL13:55Lambert-St Louis
€427
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Lufthansa
28 Oct
STL13:10Lambert-St Louis
16h 50m
2 stops
DUB11:00Dublin
4 Nov
DUB05:00Dublin
24h 42m
2 stops
STL23:42Lambert-St Louis
€428
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Lufthansa
1 Apr
STL17:18Lambert-St Louis
17h 37m
2 stops
DUB16:55Dublin
15 Apr
DUB06:05Dublin
13h 25m
1 stop
STL13:30Lambert-St Louis
€452
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British Airways flights from St. Louis to Ireland

Our best British Airways deals on St. Louis to Ireland flight tickets
British Airways
10 Jan
STL12:06Lambert-St Louis
15h 44m
2 stops
DUB09:50Dublin
17 Jan
DUB20:40Dublin
27h 34m
2 stops
STL18:14Lambert-St Louis
€451
Find similar
British Airways
1 Apr
STL14:21Lambert-St Louis
13h 24m
2 stops
DUB09:45Dublin
15 Apr
DUB10:55Dublin
18h 29m
2 stops
STL23:24Lambert-St Louis
€455
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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 24 October 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

Sun 9/11

16:30-08:45

1 stop10h 15m

Dublin

Wed 19/11

09:45-16:07

1 stop12h 22m

€373

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 2/12

12:49-07:45

1 stop12h 56m

Dublin

Tue 9/12

09:45-16:49

1 stop13h 04m

€374

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 2/12

06:39-07:45

2 stops19h 06m

Dublin

Tue 9/12

10:45-20:47

2 stops16h 02m

€377

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 3/12

16:32-08:45

1 stop10h 13m

Dublin

Thu 11/12

06:00-17:10

2 stops17h 10m

€389

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Wed 3/12

06:39-08:45

2 stops20h 06m

Dublin

Thu 11/12

08:45-23:42

2 stops20h 57m

€394

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 31/1

18:06-07:10

2 stops31h 04m

Dublin

Thu 12/2

05:00-15:29

2 stops40h 29m

€414

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sat 31/1

16:49-07:10

2 stops32h 21m

Dublin

Thu 12/2

10:40-16:02

1 stop11h 22m

€422

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 5/12

08:00-08:10

1 stop18h 10m

Dublin

Fri 12/12

09:00-15:29

1 stop12h 29m

€425

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 9/1

14:54-10:15

2 stops13h 21m

Dublin

Tue 13/1

11:30-22:44

1 stop17h 14m

€430

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 9/1

14:54-10:15

2 stops13h 21m

Dublin

Tue 13/1

11:30-23:12

2 stops17h 42m

€434

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 €738 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 €536 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 €491Free CancellationRating
7.2
11,033 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.

An easier way to manage your Ireland trip

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