What is the cheapest airline that flies from Ireland to Lambert-St Louis?

Aer Lingus is the most popular carrier operating from Ireland to Lambert-St Louis

When did momondo last update prices for flights from Ireland to Lambert-St Louis Airport?

Prices for flights from Ireland to Lambert-St Louis Airport were last updated today.

How many operators does momondo search for flights from Ireland to Lambert-St Louis Airport?

The number of operators available for flights from Ireland to Lambert-St Louis Airport is 2 as of February 2026.

How old do you have to be to fly from Ireland to Lambert-St Louis Airport?

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 Ireland to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

€293 Cheap Flights from Ireland to St. Louis in 2026

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Find the cheapest flights from Ireland to St. Louis

Round-trip

One-way

Last minute

Recent return flight deals from Ireland to St. Louis

Enter your travel dates to find the best prices.

06:40 - 23:59

DUB

STL

23h 19m

2 stops

11:55 - 07:45

STL

DUB

13h 50m

1 stop

€641Multiple Airlines

Thu, 26 Feb - Sun, 1 Mar

09:30 - 19:30

DUB

STL

16h 00m

1 stop

17:21 - 11:50

STL

DUB

12h 29m

1 stop

€734Finnair

Wed, 6 May - Wed, 20 May

09:30 - 19:29

DUB

STL

15h 59m

1 stop

12:27 - 09:45

STL

DUB

15h 18m

1 stop

€735Finnair

Mon, 30 Mar - Sun, 12 Apr

11:30 - 22:52

DUB

STL

17h 22m

1 stop

14:21 - 17:00

STL

DUB

20h 39m

2 stops

€750American Airlines

Fri, 27 Feb - Tue, 3 Mar

11:30 - 22:52

DUB

STL

17h 22m

1 stop

14:21 - 17:00

STL

DUB

20h 39m

2 stops

€751American Airlines

Fri, 27 Feb - Tue, 3 Mar

09:30 - 19:30

DUB

STL

16h 00m

1 stop

12:27 - 09:45

STL

DUB

15h 18m

1 stop

€757Finnair

Wed, 6 May - Wed, 20 May

11:30 - 23:04

DUB

STL

17h 34m

1 stop

14:00 - 08:40

STL

DUB

12h 40m

1 stop

€760Iberia

Thu, 26 Feb - Sun, 1 Mar

11:30 - 23:48

DUB

STL

18h 18m

2 stops

13:34 - 08:40

STL

DUB

13h 06m

2 stops

€772American Airlines

Thu, 26 Feb - Sun, 1 Mar

09:40 - 22:17

DUB

STL

18h 37m

2 stops

17:21 - 11:50

STL

DUB

12h 29m

1 stop

€799Finnair

Wed, 6 May - Wed, 20 May

11:30 - 23:02

DUB

STL

16h 32m

1 stop

14:00 - 08:40

STL

DUB

13h 40m

1 stop

€816Iberia

Wed, 18 Mar - Wed, 25 Mar

American Airlines flights from Ireland to St. Louis

Our best American Airlines deals on Ireland to St. Louis flight tickets

American Airlines

27 Feb

DUB11:30Dublin

17h 22m

1 stop

STL22:52Lambert-St Louis

3 Mar

STL14:21Lambert-St Louis

20h 39m

2 stops

DUB17:00Dublin

€750

American Airlines

27 Feb

DUB11:30Dublin

17h 22m

1 stop

STL22:52Lambert-St Louis

3 Mar

STL14:21Lambert-St Louis

20h 39m

2 stops

DUB17:00Dublin

€751

American Airlines

26 Feb

DUB11:30Dublin

18h 18m

2 stops

STL23:48Lambert-St Louis

1 Mar

STL13:34Lambert-St Louis

13h 06m

2 stops

DUB08:40Dublin

€772

United Airlines flights from Ireland to St. Louis

Our best United Airlines deals on Ireland to St. Louis flight tickets

United Airlines

27 Feb

DUB09:00Dublin

12h 29m

1 stop

STL15:29Lambert-St Louis

3 Mar

STL13:11Lambert-St Louis

12h 59m

1 stop

DUB08:10Dublin

€821

United Airlines

27 Feb

DUB09:00Dublin

12h 29m

1 stop

STL15:29Lambert-St Louis

3 Mar

STL13:11Lambert-St Louis

12h 59m

1 stop

DUB08:10Dublin

€823

United Airlines

8 Feb

DUB09:30Dublin

15h 57m

2 stops

STL19:27Lambert-St Louis

21 Feb

STL11:25Lambert-St Louis

14h 05m

2 stops

DUB07:30Dublin

€831

Fly from

Fly to

Route

Depart

Return

Price

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 26/2

06:40-23:59

2 stops23h 19m

Lambert-St Louis

Sun 1/3

11:55-07:45

1 stop13h 50m

€641

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 6/5

09:30-19:30

1 stop16h 00m

Lambert-St Louis

Wed 20/5

17:21-11:50

1 stop12h 29m

€734

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Mon 30/3

09:30-19:29

1 stop15h 59m

Lambert-St Louis

Sun 12/4

12:27-09:45

1 stop15h 18m

€735

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 27/2

11:30-22:52

1 stop17h 22m

Lambert-St Louis

Tue 3/3

14:21-17:00

2 stops20h 39m

€750

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 27/2

11:30-22:52

1 stop17h 22m

Lambert-St Louis

Tue 3/3

14:21-17:00

2 stops20h 39m

€751

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 6/5

09:30-19:30

1 stop16h 00m

Lambert-St Louis

Wed 20/5

12:27-09:45

1 stop15h 18m

€757

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 26/2

11:30-23:04

1 stop17h 34m

Lambert-St Louis

Sun 1/3

14:00-08:40

1 stop12h 40m

€760

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 26/2

11:30-23:48

2 stops18h 18m

Lambert-St Louis

Sun 1/3

13:34-08:40

2 stops13h 06m

€772

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 6/5

09:40-22:17

2 stops18h 37m

Lambert-St Louis

Wed 20/5

17:21-11:50

1 stop12h 29m

€799

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 18/3

11:30-23:02

1 stop16h 32m

Lambert-St Louis

Wed 25/3

14:00-08:40

1 stop13h 40m

€816

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ireland to St. Louis

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

Prices

Airlines

What is the cheapest month to fly to St. Louis?

The cheapest month to fly to St. Louis from Ireland is in August. Flight prices, which tend to average around €694, are often lower during this time because this is during the off-season. The month of November is another great option to travel to St. Louis, with average flight prices from Ireland averaging around €717.

Cheap Ireland to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to St. Louis

Fastest flight time	15h 59m
Direct flights	None

The fastest flight from Ireland to St. Louis takes 15h 59m

There are no direct flights from Ireland to St. Louis. There are no popular flight routes from Ireland to St. Louis.

Search flight deals

When did momondo last update prices for flights from Ireland to Lambert-St Louis Airport?
Prices for flights from Ireland to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights from Ireland to Lambert-St Louis Airport?
The number of operators available for flights from Ireland to Lambert-St Louis Airport is 2 as of February 2026.
How old do you have to be to fly from Ireland to Lambert-St Louis Airport?
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 Ireland to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Ireland to St. Louis

Compare and see reviews for airlines that fly from Ireland to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom €125	Free Cancellation	Rating 7.2 11,216 reviews		Search American Airlines flights
United Airlines	PriceFrom €696	Free Cancellation	Rating 7.4 9,236 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ireland to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from Ireland to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from Ireland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ireland to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ireland to St. Louis right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ireland to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.