Which airlines fly to St. Louis?

When flying to St. Louis from Ireland, momondo travellers will most often fly with that one popular airline: American Airlines. Depending on what airport in Ireland you fly from, you may be able to find flights with that popular airline.

American Airlines Flights to St. Louis

American Airlines will jet to St. Louis around 26 times in an average week. Where you fly from will dictate what kind of deals you can get for American Airlines, but prices as low as €126 have been found from Dublin to St. Louis. American Airlines has scored 7.2/10 in momondo user reviews.

€523 Cheap Flights to St. Louis in 2025

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Find the cheapest flights from Ireland to St. Louis

Round-trip

One-way

Cheap return flights

12:30 - 21:03DUB-STL

38h 33m2 stops

13:55 - 11:45STL-DUB

39h 50m2 stops

€523Scandinavian Airlines

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Thu, 4 Dec - Mon, 8 Dec

12:30 - 21:03DUB-STL

38h 33m2 stops

11:40 - 11:45STL-DUB

42h 05m2 stops

€524Scandinavian Airlines

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Thu, 4 Dec - Mon, 8 Dec

10:10 - 23:41DUB-STL

42h 31m2 stops

15:59 - 11:45STL-DUB

37h 46m2 stops

€652Scandinavian Airlines

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Sun, 26 Oct - Sat, 8 Nov

08:50 - 20:46DUB-STL

17h 56m2 stops

14:36 - 15:45STL-DUB

19h 09m2 stops

€766Delta

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Fri, 21 Nov - Sat, 29 Nov

05:55 - 20:46DUB-STL

20h 51m2 stops

16:30 - 08:45STL-DUB

10h 15m1 stop

€768Delta

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Fri, 21 Nov - Sat, 29 Nov

05:55 - 20:46DUB-STL

20h 51m2 stops

16:30 - 08:45STL-DUB

10h 15m1 stop

€769Delta

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Fri, 21 Nov - Sat, 29 Nov

10:45 - 22:34DUB-STL

17h 49m2 stops

14:17 - 14:15STL-DUB

17h 58m2 stops

€772British Airways

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Fri, 21 Nov - Sat, 29 Nov

11:30 - 20:21DUB-STL

14h 51m1 stop

14:04 - 08:40STL-DUB

12h 36m2 stops

€778American Airlines

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Thu, 4 Dec - Mon, 8 Dec

11:30 - 20:21DUB-STL

14h 51m1 stop

10:47 - 08:40STL-DUB

15h 53m1 stop

€778American Airlines

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Thu, 4 Dec - Mon, 8 Dec

17:20 - 13:55DUB-STL

26h 35m1 stop

13:00 - 08:10STL-DUB

13h 10m1 stop

€802Lufthansa

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Thu, 4 Dec - Mon, 8 Dec

Fly from

Route

Depart

Return

Price

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 4/12

12:30-21:03

2 stops38h 33m

Lambert-St Louis

Mon 8/12

13:55-11:45

2 stops39h 50m

€523

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 4/12

12:30-21:03

2 stops38h 33m

Lambert-St Louis

Mon 8/12

11:40-11:45

2 stops42h 05m

€524

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 26/10

10:10-23:41

2 stops42h 31m

Lambert-St Louis

Sat 8/11

15:59-11:45

2 stops37h 46m

€652

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 21/11

08:50-20:46

2 stops17h 56m

Lambert-St Louis

Sat 29/11

14:36-15:45

2 stops19h 09m

€766

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 21/11

05:55-20:46

2 stops20h 51m

Lambert-St Louis

Sat 29/11

16:30-08:45

1 stop10h 15m

€768

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 21/11

05:55-20:46

2 stops20h 51m

Lambert-St Louis

Sat 29/11

16:30-08:45

1 stop10h 15m

€769

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 21/11

10:45-22:34

2 stops17h 49m

Lambert-St Louis

Sat 29/11

14:17-14:15

2 stops17h 58m

€772

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 4/12

11:30-20:21

1 stop14h 51m

Lambert-St Louis

Mon 8/12

14:04-08:40

2 stops12h 36m

€778

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 4/12

11:30-20:21

1 stop14h 51m

Lambert-St Louis

Mon 8/12

10:47-08:40

1 stop15h 53m

€778

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

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

St. Louis flights insights and trends

Explore insights for your St. Louis flight to craft the best travel plan

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 €700, 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 €712.

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 €727. 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 €904.

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 €680. 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 €835.

Cheapest flights to Lambert-St Louis

Find the cheapest flights to Lambert-St Louis from your nearest city or airport

Find flights from Dublin to St. Louis

CHEAPEST MONTH TO FLY TO ST. LOUIS FROM DUBLIN	August	14% cheaper	Flying from Dublin to St. Louis costs on average just €700 in August
MOST EXPENSIVE MONTH TO FLY TO ST. LOUIS FROM DUBLIN	July	18% more expensive	It costs about €967 for flights to St. Louis from Dublin in July
MOST POPULAR MONTH TO FLY TO ST. LOUIS FROM DUBLIN	September	375% more users visited	More momondo users searched in flights to St. Louis from Dublin in September than any other month

Cheap St. Louis flight deals and tips

Summary info about St. Louis flight prices, duration and airlines

Best Round-Trip Price	€523
Fastest flight time	13h 56m
Popular in	July

The best round-trip flight price to St. Louis from Ireland in the last 72 hours is €523 (Dublin to Lambert-St Louis).

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The fastest flight to St. Louis from Ireland takes 13h 56m (Dublin to Lambert-St Louis).

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July has the highest demand for flights to St. Louis, with a 3% price increase on average.

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Frequently asked questions about flying to St. Louis

Is there an alternative airport near St. Louis?

Belleville Airport, Marion Williamson County Airport or Springfield Capital Airport can be an alternative airport used for travel to St. Louis.

How long does it take to fly to St. Louis?

If you’re flying from a popular airport in Ireland, such as Dublin or Cork, and flying into St. Louis, then you can expect flight times to average 18h 24m and , respectively.

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

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

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

The number of operators available for flights to Lambert-St Louis Airport is 1 as of September 2025.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel to Lambert-St Louis Airport.

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

The travel and health documents you'll need for your trip to Lambert-St Louis Airport 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 Lambert-St Louis Airport. 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 to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis.

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

Flights to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential St. Louis flight options are in front of you momondo lets you sort and filter flights based on preferences such as airline, price and flight times, amongst many other options.

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

Price alerts on flights to St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.