STL

€394 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 19/6. 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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Flights 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

Tue, 22 Jul - Mon, 25 Aug
Scandinavian Airlines Logo
20:15 - 23:53DUB-STL
33h 38m2 stops
Scandinavian Airlines Logo
15:42 - 11:50STL-DUB
38h 08m2 stops
€721Scandinavian Airlines
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Thu, 24 Jul - Mon, 25 Aug
Scandinavian Airlines Logo
20:15 - 21:42DUB-STL
31h 27m2 stops
Scandinavian Airlines Logo
15:42 - 11:50STL-DUB
38h 08m2 stops
€724Scandinavian Airlines
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Wed, 27 Aug - Sun, 31 Aug
 Logo
15:30 - 07:49DUB-STL
46h 19m3 stops
 Logo
16:00 - 10:40STL-DUB
12h 40m1 stop
€741
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Sat, 20 Sep - Sat, 4 Oct
Delta Logo
05:55 - 16:51DUB-STL
16h 56m2 stops
Delta Logo
16:40 - 15:00STL-DUB
16h 20m2 stops
€746Delta
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Fri, 26 Sep - Sun, 5 Oct
Delta Logo
05:55 - 16:51DUB-STL
16h 56m2 stops
Delta Logo
11:51 - 10:00STL-DUB
16h 09m2 stops
€748Delta
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Wed, 27 Aug - Sun, 31 Aug
 Logo
15:30 - 07:49DUB-STL
46h 19m3 stops
 Logo
16:00 - 07:45STL-DUB
33h 45m2 stops
€764
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Fri, 21 Nov - Sat, 29 Nov
American Airlines Logo
14:05 - 22:29DUB-STL
14h 24m1 stop
American Airlines Logo
13:55 - 07:15STL-DUB
11h 20m1 stop
€776American Airlines
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Sat, 20 Sep - Sat, 4 Oct
American Airlines Logo
13:45 - 21:53DUB-STL
14h 08m1 stop
American Airlines Logo
12:28 - 09:45STL-DUB
15h 17m1 stop
€779American Airlines
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Sat, 26 Jul - Sat, 2 Aug
Air Canada Logo
09:20 - 19:45DUB-STL
16h 25m2 stops
Air Canada Logo
05:00 - 08:15STL-DUB
21h 15m2 stops
€928Air Canada
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Sat, 26 Jul - Sat, 2 Aug
Air Canada Logo
09:20 - 19:45DUB-STL
16h 25m2 stops
Air Canada Logo
16:00 - 08:15STL-DUB
10h 15m1 stop
€930Air Canada
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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 €710 on average for return flights. On the other hand, the most expensive months are May and July, where the average cost of tickets from Ireland is €945 and €908 respectively. For one-way flights, the best month to travel is August with an average price of €710.

Good to know – Book Cheap St. Louis Plane Tickets

Low seasonAugust
High seasonJuly
Cheapest flight€394
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (11% 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 €737. On the other hand, the most expensive day to fly is Tuesday, where round-trip prices are €917 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?

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, +40 more

ANA, Aer Lingus, +41 more

Tuesday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Wednesday

ANA, Aer Lingus, Aeromexico, +41 more

ANA, Aer Lingus, +42 more

Thursday

ANA, Aer Lingus, Aeromexico, +41 more

ANA, Aer Lingus, +42 more

Friday

ANA, Aer Lingus, Aeromexico, +43 more

ANA, Aer Lingus, +44 more

Saturday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Sunday

ANA, Aer Lingus, Aeromexico, +43 more

ANA, Aer Lingus, +44 more

See more direct flights

Direct returns

Lambert-St Louis to Ireland

Monday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Tuesday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Wednesday

ANA, Aer Lingus, Aeromexico, +41 more

ANA, Aer Lingus, +42 more

Thursday

ANA, Aer Lingus, Aeromexico, +41 more

ANA, Aer Lingus, +42 more

Friday

ANA, Aer Lingus, Aeromexico, +43 more

ANA, Aer Lingus, +44 more

Saturday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Sunday

ANA, Aer Lingus, Aeromexico, +43 more

ANA, Aer Lingus, +44 more

See more direct flights
See more direct flights

Top airlines 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
6.5Food
6.9Entertainment
7.5Boarding
7.2Comfort
8.0Crew
Airline reviews

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

2.0 MediocreAnonymous, Jun 2025RIC - DFW
Read more American Airlines reviews

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious. this return flight not as tasty, but filling.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

Weather delay for 2.5 hours followed by half hour crew delay, did not have ginger ale, uncomfortable seats

The pilots are always hauling in the sky. No issues with boarding only problem was layover was shortened too much by weather but luckily the next flight was still boarding and did not missit

Good flight, friendly crew and overall - good service on United Airlines.

Received email saying that there won’t be a seat back entertainment screen and inflight WiFi would be available. But no WiFi both ways. Say it in the email.

Somebody either kayak or Air Canada booked my flight under my preferred name Betty instead of my legal name and I almost was denied boarding my flight

flight landed late almost 1.00hr and we 4 passengers missed our connected flight to indianapolis, we need to get the hotel and taxi for the next day flight to home in indianapolis, cost us $ 300 more

Or the greatest and it ended up picking us up from Chicago to Toronto not sure who was tesponsible for the 4 hr delay. United should have been properly prepared for a scheduled flight from Austin to Chicago and they were not.

Good, only discomfort was consistent turbulence through the 3 hour flight. Not sure if in companies control though.

From the kind young lady (w/Vancouver air security) who expedited our check-in to U.S. Customs to the Air Canada gate crew who gave us pre-boarding, the flight attendants who actually offered a strong hand to help me board once I had surrendered my rolling walker at the door, they are all reflections of the thoughtful, genuinely helpful Canadians we have grown to appreciate. Water and other beverages were offered throughout the flight to make sure we weren't dehydrated and the cookie was great. (Husband bought the fruit & crackers snack,) I was delighted to see three movies that I would not have otherwise seen and appreciate that AC left the last film viewable until its conclusion although the flight had actually landed. Last, mahalo to the kind strong gentleman who not offered his hand to help me debark the plane, but gave me an AC pin that I'll truly treasure.

The ground staff was so rude in Toronto airport ...very rude and did not answer simple questions, and made me look like a fool. Very rude ground staff.

My flight got delayed 5 times and then got cancelled eventually, I had to get a hotel and uber and pay for food for an extra night without any plans. It was a horrible experience, instead of Air Canada, I was flying with United .

I had a nice flight with free wifi. So I was able to message family members and stream music during my flight, which made the trip go by fast. I also enjoyed flying on there Airbus A220. The plane looked very new and it also got up to speed fast down the runway and didn't need much runway to get airborne.

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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