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

WestJet and Aer Lingus are the most popular carriers 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 1 as of August 2025.

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.

€287 Cheap Flights from Ireland to St. Louis in 2025

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Find the cheapest flights from Ireland to St. Louis

Round-trip

One-way

Recent return flight deals from Ireland to St. Louis

12:30 - 20:49DUB-STL

38h 19m2 stops

13:30 - 11:45STL-DUB

40h 15m2 stops

€522Scandinavian Airlines

Find Deal

Thu, 4 Dec - Mon, 8 Dec

12:30 - 20:49DUB-STL

38h 19m2 stops

13:30 - 11:45STL-DUB

40h 15m2 stops

€524Scandinavian Airlines

Find Deal

Thu, 4 Dec - Mon, 8 Dec

09:00 - 15:29DUB-STL

12h 29m1 stop

15:14 - 09:55STL-DUB

12h 41m2 stops

€796United Airlines

Find Deal

Fri, 21 Nov - Sat, 29 Nov

09:00 - 15:29DUB-STL

12h 29m1 stop

06:30 - 08:10STL-DUB

19h 40m1 stop

€799United Airlines

Find Deal

Fri, 21 Nov - Sat, 29 Nov

17:20 - 13:55DUB-STL

26h 35m1 stop

13:00 - 08:10STL-DUB

13h 10m1 stop

€802Lufthansa

Find Deal

Thu, 4 Dec - Mon, 8 Dec

17:20 - 13:55DUB-STL

26h 35m1 stop

13:00 - 08:10STL-DUB

13h 10m1 stop

€803Lufthansa

Find Deal

Thu, 4 Dec - Mon, 8 Dec

11:30 - 21:47DUB-STL

16h 17m2 stops

14:44 - 08:40STL-DUB

11h 56m1 stop

€807American Airlines

Find Deal

Thu, 4 Dec - Mon, 8 Dec

11:30 - 21:47DUB-STL

16h 17m2 stops

14:44 - 08:40STL-DUB

11h 56m1 stop

€809American Airlines

Find Deal

Thu, 4 Dec - Mon, 8 Dec

05:55 - 13:30DUB-STL

13h 35m1 stop

09:15 - 08:15STL-DUB

17h 00m1 stop

€824

Find Deal

Fri, 29 Aug - Thu, 11 Sep

12:55 - 09:54DUB-STL

26h 59m1 stop

14:40 - 08:40STL-DUB

12h 00m1 stop

€828

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Sat, 20 Dec - Fri, 9 Jan

Delta flights from Ireland to St. Louis

Our best Delta deals on Ireland to St. Louis flight tickets

Delta

30 Sept

DUB05:55Dublin

16h 53m

2 stops

STL16:48Lambert-St Louis

7 Oct

STL16:13Lambert-St Louis

11h 02m

1 stop

DUB09:15Dublin

€852

Find similar

Delta

29 Aug

DUB05:55Dublin

14h 35m

2 stops

STL14:30Lambert-St Louis

11 Sept

STL18:00Lambert-St Louis

15h 00m

2 stops

DUB15:00Dublin

€858

Find similar

United Airlines flights from Ireland to St. Louis

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

United Airlines

21 Nov

DUB09:00Dublin

12h 29m

1 stop

STL15:29Lambert-St Louis

29 Nov

STL15:14Lambert-St Louis

12h 41m

2 stops

DUB09:55Dublin

€796

Find similar

United Airlines

21 Nov

DUB09:00Dublin

12h 29m

1 stop

STL15:29Lambert-St Louis

29 Nov

STL06:30Lambert-St Louis

19h 40m

1 stop

DUB08:10Dublin

€799

Find similar

United Airlines

21 Nov

DUB09:00Dublin

14h 39m

2 stops

STL17:39Lambert-St Louis

29 Nov

STL15:14Lambert-St Louis

12h 41m

2 stops

DUB09:55Dublin

€801

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 4/12

12:30-20:49

2 stops38h 19m

Lambert-St Louis

Mon 8/12

13:30-11:45

2 stops40h 15m

€522

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 4/12

12:30-20:49

2 stops38h 19m

Lambert-St Louis

Mon 8/12

13:30-11:45

2 stops40h 15m

€524

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 21/11

09:00-15:29

1 stop12h 29m

Lambert-St Louis

Sat 29/11

15:14-09:55

2 stops12h 41m

€796

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 21/11

09:00-15:29

1 stop12h 29m

Lambert-St Louis

Sat 29/11

06:30-08:10

1 stop19h 40m

€799

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 4/12

17:20-13:55

1 stop26h 35m

Lambert-St Louis

Mon 8/12

13:00-08:10

1 stop13h 10m

€802

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 4/12

17:20-13:55

1 stop26h 35m

Lambert-St Louis

Mon 8/12

13:00-08:10

1 stop13h 10m

€803

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 4/12

11:30-21:47

2 stops16h 17m

Lambert-St Louis

Mon 8/12

14:44-08:40

1 stop11h 56m

€807

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 4/12

11:30-21:47

2 stops16h 17m

Lambert-St Louis

Mon 8/12

14:44-08:40

1 stop11h 56m

€809

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 29/8

05:55-13:30

1 stop13h 35m

Lambert-St Louis

Thu 11/9

09:15-08:15

1 stop17h 00m

€824

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 20/12

12:55-09:54

1 stop26h 59m

Lambert-St Louis

Fri 9/1

14:40-08:40

1 stop12h 00m

€828

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 €701, are often lower during this time because this is during the off-season. The month of February is another great option to travel to St. Louis, with average flight prices from Ireland averaging around €713.

What is the cheapest day to depart on your flight to St. Louis?

On average, the least expensive day to fly to St. Louis from Ireland is on a Thursday. momondo users have found tickets for Thursday departures for as low as €728. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to St. Louis for around €906.

What is the cheapest time of day to depart on your flight to St. Louis?

At midday is the cheapest time of day to fly from Ireland to St. Louis when you can find flight prices for as low as €681. Flying to St. Louis at midday is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive, with an average ticket price of €836.

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

Best price found	€287
Fastest flight time	10h 09m
Direct flights	None
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Ireland in the past 72 hours is €287. The best return flight deal from Ireland to St. Louis found on momondo in the last 72 hours is €522.

The fastest flight from Ireland to St. Louis takes 10h 09m

There are no direct flights from Ireland to St. Louis. Popular non-direct route for this connection is Dublin Airport - Lambert-St Louis Airport.

There is 1 airport near St. Louis: Lambert-St Louis (STL)

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 1 as of August 2025.
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 €126	Free Cancellation	Rating 7.2 10,000 reviews		Search American 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.