STL

€354 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 26/5. 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, 0 bags

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
Travellers love KAYAK
41 299 237 searches in the past 7 days on KAYAK

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest return fare
€704
Typical prices: €764-€818
Multiple Airlines
Mon 20/4Sat 25/4
DUB - STL • 2 stops
Cheapest one-way flight
€354
Typical prices: €532-€702
Multiple Airlines
Tue 26/5
DUB - STL • 2 stops
When to travel
August
Cheapest • 18% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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!
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

Mon, 20 Apr - Sat, 25 Apr
Multiple Airlines Logo
06:25 - 23:19
DUB
-
STL
22h 54m
2 stops
Multiple Airlines Logo
15:25 - 07:55
STL
-
DUB
10h 30m
1 stop
€704Multiple Airlines
Thu, 23 Apr - Thu, 7 May
Finnair Logo
09:30 - 19:30
DUB
-
STL
16h 00m
1 stop
Finnair Logo
17:21 - 11:50
STL
-
DUB
12h 29m
1 stop
€713Finnair
Mon, 30 Mar - Sun, 12 Apr
Finnair Logo
09:30 - 19:29
DUB
-
STL
15h 59m
1 stop
Finnair Logo
12:27 - 09:45
STL
-
DUB
15h 18m
1 stop
€732Finnair
Wed, 6 May - Wed, 20 May
Finnair Logo
09:30 - 19:30
DUB
-
STL
16h 00m
1 stop
Finnair Logo
17:21 - 11:50
STL
-
DUB
12h 29m
1 stop
€733Finnair
Mon, 30 Mar - Sun, 12 Apr
Finnair Logo
09:30 - 19:29
DUB
-
STL
15h 59m
1 stop
Finnair Logo
12:27 - 09:45
STL
-
DUB
15h 18m
1 stop
€734Finnair
Wed, 6 May - Wed, 20 May
Finnair Logo
09:30 - 19:30
DUB
-
STL
16h 00m
1 stop
Finnair Logo
12:27 - 09:45
STL
-
DUB
15h 18m
1 stop
€786Finnair
Wed, 6 May - Wed, 20 May
Finnair Logo
09:40 - 22:17
DUB
-
STL
18h 37m
2 stops
Finnair Logo
17:21 - 11:50
STL
-
DUB
12h 29m
1 stop
€800Finnair
Wed, 6 May - Wed, 20 May
Finnair Logo
09:40 - 22:17
DUB
-
STL
18h 37m
2 stops
Finnair Logo
17:21 - 11:50
STL
-
DUB
12h 29m
1 stop
€801Finnair
Thu, 2 Apr - Thu, 16 Apr
Finnair Logo
09:40 - 21:11
DUB
-
STL
17h 31m
2 stops
Finnair Logo
12:27 - 09:45
STL
-
DUB
15h 18m
1 stop
€802Finnair
Thu, 2 Apr - Thu, 16 Apr
Multiple Airlines Logo
09:40 - 23:44
DUB
-
STL
20h 04m
2 stops
Multiple Airlines Logo
12:27 - 09:45
STL
-
DUB
15h 18m
1 stop
€803Multiple Airlines
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 €696 on average for one-way flights. On the other hand, the most expensive months are January and July, where the average cost of tickets from Ireland is €1,032 and €968 respectively. For return trips, the best month to travel is August with an average price of €696.

Find deals

Good to know – Book Cheap St. Louis Plane Tickets

Low seasonAugust
Cheapest flight€354
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly and prices are also 11% 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.

  • 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.

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.

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 11357 reviews
7.2Comfort
6.9Entertainment
7.5Boarding
8.0Crew
6.4Food
Airline reviews

Arrived early picked up my bag in a few minutes- great trip - thank you

10.0 ExcellentJoseph, Feb 2026
CLT - BNA
Read more American Airlines reviews

Arrived early picked up my bag in a few minutes- great trip - thank you

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

Boarding is always an ordeal. Less dogs on flights. I am highly allergic to dogs and cats. Why are there so many animals these days?

Flight to Tampa was delayed taking off due to plane arriving late but no other issues

There was a delay with the plan which cause the flight to leave later and once arrived in Chicago there was another delay and some passengers missed their connecting flights

Massimo, flight attendant was very authentic, attentive - wonderful. Food/wrap was just okay.

Worst experience ever. Flight could not land in Charlotte for what we were told was a ground stop. Had to be diverted to Raleigh to refuel. Strangely during ground stop, our connecting flight had no issue taking off on time causing us to miss our flight. We were told there were no other flights that day to our final destination and that two days out was the next one. The only flights to get us there were from Chicago the next morning. Completely opposite direction but it was a direct flight. So we get flown to Chicago and have to find a hotel in our own dime. The flight in the morning was also delayed. Thankfully only a short time. The non too of all this, our luggage did not arrive by the time we were there. Communication was terrible, through the entire trip. Complete incompetence. Will never fly American again.

I am an AA flyer for a very long time... AA has yet to disappoint.

Flight was delayed. Not much information on when the flight would take off. Eventually we were told it was maintenance. App was not giving updates.

We were delayed and due to lateness we were traveling from 11pm we were rerouted to FLL and couldnt deplane but stayed on the plane with no extra Service given (extra good options etc$ there Were so many things that could go wrong and did. This was not an enjoyable experience at all thoroughly exhausting

Travelling to a place near St. Louis?

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

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

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

St. Louis (STL)