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Cheap flights from St. Louis to Ireland from €164

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 6/9. 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.
Aer Lingus Logo
08:55 - 05:10
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
13:20 - 14:00
DUB
-
STL
30h 40m
1 stop
€289Aer Lingus
Tue, 1 Sep - Wed, 9 Sep
Aer Lingus Logo
16:15 - 05:15
STL
-
DUB
32h 00m
1 stop
Aer Lingus Logo
13:00 - 15:30
DUB
-
STL
32h 30m
1 stop
€302Aer Lingus
Mon, 26 Oct - Wed, 4 Nov
Aer Lingus Logo
16:15 - 05:10
STL
-
DUB
31h 55m
1 stop
Aer Lingus Logo
13:00 - 15:30
DUB
-
STL
32h 30m
1 stop
€302Aer Lingus
Mon, 26 Oct - Wed, 4 Nov
Aer Lingus Logo
08:55 - 05:10
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
13:20 - 20:00
DUB
-
STL
12h 40m
1 stop
€305Aer Lingus
Tue, 1 Sep - Fri, 11 Sep
Aer Lingus Logo
08:55 - 05:10
STL
-
DUB
14h 15m
1 stop
Aer Lingus Logo
13:20 - 14:00
DUB
-
STL
30h 40m
1 stop
€306Aer Lingus
Tue, 1 Sep - Tue, 15 Sep
United Airlines Logo
12:27 - 10:15
STL
-
SNN
15h 48m
1 stop
United Airlines Logo
09:30 - 15:38
SNN
-
STL
12h 08m
1 stop
€653United Airlines
Tue, 1 Sep - Mon, 7 Sep
Lufthansa Logo
12:59 - 07:30
STL
-
SNN
12h 31m
1 stop
Lufthansa Logo
12:30 - 23:38
SNN
-
STL
17h 08m
1 stop
€657Lufthansa
Wed, 9 Sep - Tue, 22 Sep
United Airlines Logo
17:30 - 10:15
STL
-
SNN
34h 45m
2 stops
United Airlines Logo
09:30 - 21:36
SNN
-
STL
18h 06m
1 stop
€662United Airlines
Sat, 5 Sep - Sun, 13 Sep
Lufthansa Logo
12:27 - 10:15
STL
-
SNN
15h 48m
1 stop
Lufthansa Logo
12:30 - 23:38
SNN
-
STL
17h 08m
1 stop
€662Lufthansa
Sun, 23 Aug - Wed, 9 Sep
KLM Logo
10:55 - 11:10
STL
-
SNN
18h 15m
2 stops
KLM Logo
13:05 - 15:57
SNN
-
STL
32h 52m
2 stops
€703KLM
Sat, 5 Sep - Sun, 13 Sep

British Airways flights from St. Louis to Ireland

Our best British Airways deals on St. Louis to Ireland flight tickets
British Airways
26 Oct
STL20:05Lambert-St Louis
16h 00m
2 stops
DUB17:05Dublin
4 Nov
DUB10:20Dublin
18h 09m
2 stops
STL22:29Lambert-St Louis
€608
British Airways
15 Aug
STL19:38Lambert-St Louis
33h 42m
2 stops
SNN11:20Shannon
23 Aug
SNN21:15Shannon
28h 10m
2 stops
STL19:25Lambert-St Louis
€947

Air Canada flights from St. Louis to Ireland

Our best Air Canada deals on St. Louis to Ireland flight tickets
Air Canada
9 Sept
STL12:10Lambert-St Louis
13h 35m
1 stop
DUB07:45Dublin
15 Sept
DUB09:20Dublin
32h 37m
2 stops
STL11:57Lambert-St Louis
€584
Air Canada
2 Sept
STL12:10Lambert-St Louis
13h 35m
1 stop
DUB07:45Dublin
16 Sept
DUB09:20Dublin
32h 37m
2 stops
STL11:57Lambert-St Louis
€588
Air Canada
1 Sept
STL14:40Lambert-St Louis
35h 05m
2 stops
DUB07:45Dublin
8 Sept
DUB09:20Dublin
32h 37m
2 stops
STL11:57Lambert-St Louis
€591

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 May 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

Tue 1/9

08:55-05:10

1 stop14h 15m

Dublin

Wed 9/9

13:20-14:00

1 stop30h 40m

€289

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 26/10

16:15-05:15

1 stop32h 00m

Dublin

Wed 4/11

13:00-15:30

1 stop32h 30m

€302

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Mon 26/10

16:15-05:10

1 stop31h 55m

Dublin

Wed 4/11

13:00-15:30

1 stop32h 30m

€302
Fastest return journey

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 1/9

08:55-05:10

1 stop14h 15m

Dublin

Fri 11/9

13:20-20:00

1 stop12h 40m

€305

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 1/9

08:55-05:10

1 stop14h 15m

Dublin

Tue 15/9

13:20-14:00

1 stop30h 40m

€306

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 1/9

12:27-10:15

1 stop15h 48m

Shannon

Mon 7/9

09:30-15:38

1 stop12h 08m

€653

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/9

12:59-07:30

1 stop12h 31m

Shannon

Tue 22/9

12:30-23:38

1 stop17h 08m

€657

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 5/9

17:30-10:15

2 stops34h 45m

Shannon

Sun 13/9

09:30-21:36

1 stop18h 06m

€662

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 23/8

12:27-10:15

1 stop15h 48m

Shannon

Wed 9/9

12:30-23:38

1 stop17h 08m

€662

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 5/9

10:55-11:10

2 stops18h 15m

Shannon

Sun 13/9

13:05-15:57

2 stops32h 52m

€703

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 October is another great option to travel to Ireland, with average flight prices from St. Louis averaging around €330.

How far in advance should I book a flight from St. Louis 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 €619 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 €411 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

11h 20m

Direct flights

None
The fastest flight from St. Louis to Ireland takes 11h 20m
There are no direct flights from St. Louis to Ireland. There are no popular flight routes from St. Louis to Ireland.
Search flight deals

Frequently asked questions about flying from St. Louis to Ireland

  • 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.

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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