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Cheap flights from St. Louis to Ireland from €183

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 15/8. 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
05:20 - 07:45
STL
-
DUB
20h 25m
2 stops
United Airlines Logo
09:20 - 12:20
DUB
-
STL
33h 00m
2 stops
€390United Airlines
Tue, 11 Aug - Wed, 19 Aug
United Airlines Logo
12:10 - 07:45
STL
-
DUB
13h 35m
1 stop
United Airlines Logo
09:20 - 22:06
DUB
-
STL
42h 46m
2 stops
€393United Airlines
Sun, 16 Aug - Tue, 25 Aug
United Airlines Logo
05:00 - 09:45
STL
-
DUB
22h 45m
1 stop
United Airlines Logo
09:20 - 22:06
DUB
-
STL
42h 46m
2 stops
€394United Airlines
Tue, 11 Aug - Wed, 19 Aug
Air Canada Logo
12:10 - 07:45
STL
-
DUB
13h 35m
1 stop
Air Canada Logo
09:50 - 18:32
DUB
-
STL
14h 42m
1 stop
€400Air Canada
Sun, 16 Aug - Tue, 25 Aug
British Airways Logo
21:35 - 14:35
STL
-
DUB
11h 00m
1 stop
British Airways Logo
10:30 - 19:30
DUB
-
STL
15h 00m
1 stop
€401British Airways
Tue, 18 Aug - Tue, 25 Aug
Lufthansa Logo
11:37 - 10:15
STL
-
SNN
16h 38m
1 stop
Lufthansa Logo
12:30 - 23:57
SNN
-
STL
17h 27m
1 stop
€498Lufthansa
Tue, 21 Apr - Thu, 30 Apr
Air Canada Logo
06:15 - 10:15
STL
-
SNN
22h 00m
1 stop
Air Canada Logo
12:30 - 22:28
SNN
-
STL
15h 58m
2 stops
€499Air Canada
Tue, 7 Apr - Tue, 14 Apr
Lufthansa Logo
15:30 - 11:15
STL
-
SNN
13h 45m
1 stop
Lufthansa Logo
12:00 - 15:38
SNN
-
STL
33h 38m
2 stops
€502Lufthansa
Fri, 7 Aug - Sat, 29 Aug
Multiple Airlines Logo
15:30 - 17:30
STL
-
KIR
20h 00m
3 stops
Multiple Airlines Logo
10:45 - 15:24
KIR
-
STL
34h 39m
3 stops
€997Multiple Airlines
Sun, 5 Apr - Sun, 12 Apr
Multiple Airlines Logo
15:30 - 17:30
STL
-
KIR
20h 00m
3 stops
Multiple Airlines Logo
10:45 - 15:24
KIR
-
STL
34h 39m
3 stops
€998Multiple Airlines
Sun, 5 Apr - Sun, 12 Apr

British Airways flights from St. Louis to Ireland

Our best British Airways deals on St. Louis to Ireland flight tickets
British Airways
18 Aug
STL21:35Lambert-St Louis
11h 00m
1 stop
DUB14:35Dublin
25 Aug
DUB10:30Dublin
15h 00m
1 stop
STL19:30Lambert-St Louis
€401
British Airways
14 Apr
STL14:33Lambert-St Louis
13h 07m
2 stops
DUB09:40Dublin
22 Apr
DUB12:50Dublin
12h 40m
1 stop
STL19:30Lambert-St Louis
€450
British Airways
28 Feb
STL11:50Lambert-St Louis
18h 55m
2 stops
DUB12:45Dublin
6 Mar
DUB20:35Dublin
32h 17m
2 stops
STL22:52Lambert-St Louis
€564

KLM flights from St. Louis to Ireland

Our best KLM deals on St. Louis to Ireland flight tickets
KLM
24 Feb
STL11:23Lambert-St Louis
14h 22m
1 stop
DUB07:45Dublin
3 Mar
DUB05:55Dublin
16h 47m
2 stops
STL16:42Lambert-St Louis
€410
KLM
24 Feb
STL07:10Lambert-St Louis
18h 35m
1 stop
DUB07:45Dublin
3 Mar
DUB09:45Dublin
19h 51m
1 stop
STL23:36Lambert-St Louis
€412
KLM
12 Apr
STL12:28Lambert-St Louis
13h 27m
1 stop
DUB07:55Dublin
22 Apr
DUB05:55Dublin
16h 47m
2 stops
STL16:42Lambert-St Louis
€456

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 22 February 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

Tue 11/8

05:20-07:45

2 stops20h 25m

Dublin

Wed 19/8

09:20-12:20

2 stops33h 00m

€390

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 16/8

12:10-07:45

1 stop13h 35m

Dublin

Tue 25/8

09:20-22:06

2 stops42h 46m

€393

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 11/8

05:00-09:45

1 stop22h 45m

Dublin

Wed 19/8

09:20-22:06

2 stops42h 46m

€394

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 16/8

12:10-07:45

1 stop13h 35m

Dublin

Tue 25/8

09:50-18:32

1 stop14h 42m

€400

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 18/8

21:35-14:35

1 stop11h 00m

Dublin

Tue 25/8

10:30-19:30

1 stop15h 00m

€401

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 21/4

11:37-10:15

1 stop16h 38m

Shannon

Thu 30/4

12:30-23:57

1 stop17h 27m

€498

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 7/4

06:15-10:15

1 stop22h 00m

Shannon

Tue 14/4

12:30-22:28

2 stops15h 58m

€499

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 7/8

15:30-11:15

1 stop13h 45m

Shannon

Sat 29/8

12:00-15:38

2 stops33h 38m

€502

St. LouisMilltown (Kerry)

STL - KIR

STLKIR

Lambert-St Louis

Sun 5/4

15:30-17:30

3 stops20h 00m

Milltown (Kerry)

Sun 12/4

10:45-15:24

3 stops34h 39m

€997

St. LouisMilltown (Kerry)

STL - KIR

STLKIR

Lambert-St Louis

Sun 5/4

15:30-17:30

3 stops20h 00m

Milltown (Kerry)

Sun 12/4

10:45-15:24

3 stops34h 39m

€998

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 November is another great option to travel to Ireland, with average flight prices from St. Louis averaging around €473.

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 €628 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 €489 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 14m

Direct flights

None
The fastest flight from St. Louis to Ireland takes 10h 14m
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 €484Free CancellationRating
7.2
11,339 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 €37
Flights to Corkfrom €87
Flights to Shannon, Clarefrom €104
Flights to Donegalfrom €74
Flights to Milltown (Kerry)from €37