STL

€321 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 4/12. 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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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 - 23:42DUB-STL
41h 12m2 stops
Scandinavian Airlines Logo
13:57 - 11:45STL-DUB
39h 48m2 stops
€575Scandinavian Airlines
Find Deal
Thu, 4 Dec - Mon, 8 Dec
Scandinavian Airlines Logo
12:30 - 23:42DUB-STL
41h 12m2 stops
Scandinavian Airlines Logo
13:57 - 11:45STL-DUB
39h 48m2 stops
€576Scandinavian Airlines
Find Deal
Thu, 4 Dec - Mon, 8 Dec
American Airlines Logo
11:30 - 19:30DUB-STL
14h 00m2 stops
American Airlines Logo
10:56 - 08:40STL-DUB
15h 44m1 stop
€780American Airlines
Find Deal
Thu, 13 Nov - Fri, 28 Nov
Multiple Airlines Logo
11:30 - 00:05DUB-STL
18h 35m2 stops
Multiple Airlines Logo
14:08 - 08:40STL-DUB
12h 32m2 stops
€782Multiple Airlines
Find Deal
Thu, 4 Dec - Mon, 8 Dec
American Airlines Logo
11:30 - 20:21DUB-STL
14h 51m1 stop
American Airlines Logo
10:56 - 08:40STL-DUB
15h 44m1 stop
€782American Airlines
Find Deal
Fri, 21 Nov - Sat, 29 Nov
Multiple Airlines Logo
11:30 - 23:04DUB-STL
17h 34m1 stop
Multiple Airlines Logo
06:00 - 08:40STL-DUB
20h 40m1 stop
€784Multiple Airlines
Find Deal
Thu, 4 Dec - Thu, 11 Dec
Lufthansa Logo
11:45 - 13:55DUB-STL
32h 10m1 stop
Lufthansa Logo
13:00 - 08:10STL-DUB
13h 10m1 stop
€788Lufthansa
Find Deal
Thu, 4 Dec - Thu, 11 Dec
United Airlines Logo
12:05 - 19:13DUB-STL
13h 08m1 stop
United Airlines Logo
13:00 - 09:55STL-DUB
14h 55m2 stops
€792United Airlines
Find Deal
Wed, 1 Apr - Wed, 8 Apr
Lufthansa Logo
06:05 - 13:30DUB-STL
13h 25m1 stop
Lufthansa Logo
17:18 - 09:45STL-DUB
10h 27m1 stop
€798Lufthansa
Find Deal
Wed, 1 Apr - Wed, 8 Apr
United Airlines Logo
09:50 - 19:48DUB-STL
15h 58m2 stops
United Airlines Logo
15:15 - 10:20STL-DUB
13h 05m2 stops
€841United Airlines
Find Deal

Everything you should know

When to travel
August
Cheapest • 15% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
€575
Overall average: €863
Scandinavian Airlines
Thu 4/12Mon 8/12
DUB - STL • 2 stops
Cheapest one-way flight
€321
Typical prices: €569-€681
Multiple Airlines
Thu 4/12
DUB - STL • 2 stops
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
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 €707 on average for one-way flights. On the other hand, the most expensive months are July and May, where the average cost of tickets from Ireland is €977 and €942 respectively. For return trips, the best month to travel is August with an average price of €707.

Good to know – Book Cheap St. Louis Plane Tickets

Low seasonAugust
Cheapest flight€321
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly and prices are also 8% lower 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 tickets can be as cheap as €734. On the other hand, the most expensive day to fly is Tuesday, where prices are €914 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 flights cost €687 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 €844.

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, +39 more

ANA, Aer Lingus, +40 more

Tuesday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 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, +40 more

ANA, Aer Lingus, +41 more

Saturday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Sunday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

See more direct flights

Direct returns

Lambert-St Louis to Ireland

Monday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Tuesday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 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, +40 more

ANA, Aer Lingus, +41 more

Saturday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Sunday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

See more direct flights

Reviews of the 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.
7.4
United AirlinesOverall score based on 8990 reviews
6.6Food
7.3Comfort
8.1Crew
7.7Boarding
7.1Entertainment
Airline reviews

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

4.0 OkayAnonymous, Oct 2025YVR - SFO
Read more United Airlines reviews

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

Excellent all round, first time flying United. App is very helpful.

We Left Calgary 1/2 hour late and that made for a tight connection in Denver. After arriving everything was done to help us make our connection. That was a great effort. Thank You United

Efficient all round, very good crew. Short flight so the food, of course, was just snacks

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

Typically flights with AA are good. The staff are pleasant, welcoming, and efficient.

A couple ladies from the crew were so rude and nasty. Thought they were mad at having to be there especially if you asked a question. This will make me think twice next time if I book a flight with you.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

Poor seat in rear of aircraft Food at Admiral’s Club Terminal D at DFW inedible

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Flight was delayed because of a bird strike. They had another plane available within 45 minutes.

The business class seats are dated and uncomfortable. The space is bare minimum and there is absolutely no privacy. For $4K, this is not what I expect.

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

Flight attendants on this flight were very attentive and friendly

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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