STL

€338 Find Cheap Flights to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to St. Louis

Thu, 4 Dec - Mon, 8 Dec
Scandinavian Airlines Logo
12:30 - 23:39DUB-STL
41h 09m2 stops
Scandinavian Airlines Logo
13:30 - 11:45STL-DUB
40h 15m2 stops
€525Scandinavian Airlines
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Tue, 9 Sep - Mon, 29 Sep
Aer Lingus Logo
16:40 - 21:53DUB-STL
11h 13m1 stop
Aer Lingus Logo
13:03 - 08:10STL-DUB
13h 07m1 stop
€538Aer Lingus
Find Deal
Wed, 10 Sep - Mon, 29 Sep
 Logo
15:25 - 09:06DUB-STL
23h 41m1 stop
 Logo
16:00 - 05:05STL-DUB
31h 05m2 stops
€776
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Fri, 21 Nov - Sat, 29 Nov
United Airlines Logo
09:00 - 15:29DUB-STL
12h 29m1 stop
United Airlines Logo
15:14 - 10:20STL-DUB
13h 06m2 stops
€799United Airlines
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Fri, 21 Nov - Sat, 29 Nov
United Airlines Logo
09:00 - 17:39DUB-STL
14h 39m2 stops
United Airlines Logo
15:14 - 10:20STL-DUB
13h 06m2 stops
€803United Airlines
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Thu, 4 Dec - Mon, 8 Dec
Lufthansa Logo
17:20 - 13:55DUB-STL
26h 35m1 stop
Lufthansa Logo
13:00 - 08:10STL-DUB
13h 10m1 stop
€804Lufthansa
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Wed, 10 Sep - Sun, 28 Sep
 Logo
15:25 - 09:06DUB-STL
23h 41m1 stop
 Logo
16:00 - 05:05STL-DUB
31h 05m2 stops
€805
Find Deal
Thu, 4 Dec - Mon, 8 Dec
Lufthansa Logo
17:20 - 13:55DUB-STL
26h 35m1 stop
Lufthansa Logo
13:00 - 08:10STL-DUB
13h 10m1 stop
€806Lufthansa
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Thu, 4 Dec - Mon, 8 Dec
American Airlines Logo
11:30 - 21:47DUB-STL
16h 17m2 stops
American Airlines Logo
14:44 - 08:40STL-DUB
11h 56m1 stop
€808American Airlines
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Thu, 4 Dec - Mon, 8 Dec
American Airlines Logo
11:30 - 21:47DUB-STL
16h 17m2 stops
American Airlines Logo
14:44 - 08:40STL-DUB
11h 56m1 stop
€811American Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for flights to St. Louis

Get data-powered insights and trends into flights to St. Louis to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to St. Louis is August, where tickets cost €703 on average for return flights. On the other hand, the most expensive months are July and May, where the average cost of tickets from Ireland is €971 and €936 respectively. For one-way flights, the best month to travel is August with an average price of €703.

Good to know – Book Cheap St. Louis Plane Tickets

Low seasonAugust
Cheapest flight€338
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (19% more expensive on average)
Flight from Dublin to St. Louis

When to book flights to St. Louis

Are your dates flexible? Find out the best times to travel to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to St. Louis based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking St. Louis flights

  • How far is Lambert-St Louis Airport from central St. Louis?

    There are 20 km between St. Louis city centre and Lambert-St Louis Airport.

  • What is the name of St. Louis’s airport?

    St. Louis is served by Lambert-St Louis Airport, also commonly referred to as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl. The airport code is STL.

  • What is the cheapest day to fly to St. Louis?

    Based on KAYAK data, the cheapest day to fly to St. Louis is Thursday where round-trip tickets can be as cheap as €730. On the other hand, the most expensive day to fly is Tuesday, where round-trip prices are €908 on average.

  • How does KAYAK find such low prices on flights to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to St. Louis?

    The cheapest time of day to fly to St. Louis is generally in the afternoon, when round-trip flights cost €797 on average. The most expensive time of day to fly to St. Louis is generally in the morning, which is peak travel time and where the average cost of a ticket is €979.

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Prefer to fly direct to Lambert-St Louis?

 
Nonstop data is based off flight results for the next 60 days. Find direct flights from all airlines flying nonstop to Lambert-St Louis.
Find which airlines fly direct to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

Ireland to Lambert-St Louis

Monday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Tuesday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Wednesday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Thursday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Friday

ANA, Aer Lingus, Aeromexico, +41 more

ANA, Aer Lingus, +42 more

Saturday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Sunday

ANA, Aer Lingus, Aeromexico, +41 more

ANA, Aer Lingus, +42 more

See more direct flights

Direct returns

Lambert-St Louis to Ireland

Monday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Tuesday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Wednesday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Thursday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Friday

ANA, Aer Lingus, Aeromexico, +41 more

ANA, Aer Lingus, +42 more

Saturday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Sunday

ANA, Aer Lingus, Aeromexico, +41 more

ANA, Aer Lingus, +42 more

See more direct flights

Reviews of the top airline flying to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 10000 reviews
8.0Crew
7.5Boarding
7.2Comfort
6.5Food
6.9Entertainment
Airline reviews

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

6.0 GoodMitchell, Aug 2025CMH - ORD
Read more American Airlines reviews

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

Food was ok, but not as good as I have had before on AA.

No issues. They did change our gate FOUR times in about 30 minutes which was mildly annoying but the flight was fine.

Great flight. No issues at all. I still think boarding could be more efficient but otherwise, a good experience.

They don't make it easy or promote their food options. Dirty plane. Delayed.

Pretty good. The food was just mediocre, the boarding and crew were good.

Worst flight ever. I was suppose to have a 3 1/2 hour layover in Chicago but got to the gate 4 minutes before boarding.

The comfort of the seats was great, the crew eased my child’s anxieties and the fact that I had full cans of my beverage choice was great.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Fairview Heights
Wentzville

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis

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