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Find cheap flights to St. Louis from €421

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 6/5. 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
0 bags
Fri 24/5
Fri 31/5

Search 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
In the last 7 days, travellers have searched 45,119,101 times on KAYAK, and here's why:

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Cheap flight deals to St. Louis

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 and deals for you by selecting your travel dates.
Choose your dates
11:45 - 19:30DUB-STL
13h 45m1 stop
16:20 - 20:25STL-DUB
22h 05m2 stops
€807American Airlines
Find Deal
Fri, 24 May - Fri, 31 May
11:45 - 21:47DUB-STL
16h 02m2 stops
16:20 - 20:25STL-DUB
22h 05m2 stops
€812American Airlines
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Fri, 24 May - Fri, 31 May
13:15 - 23:00DUB-STL
15h 45m1 stop
06:37 - 08:35STL-DUB
19h 58m1 stop
€822
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Fri, 18 Oct - Fri, 25 Oct
11:45 - 19:30DUB-STL
13h 45m1 stop
05:04 - 05:00STL-DUB
17h 56m1 stop
€825American Airlines
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Thu, 23 May - Thu, 30 May
11:10 - 21:52DUB-STL
16h 42m2 stops
07:15 - 08:45STL-DUB
19h 30m1 stop
€842KLM
Find Deal
Wed, 5 Jun - Mon, 10 Jun
09:50 - 15:21DUB-STL
11h 31m1 stop
10:15 - 11:10STL-DUB
18h 55m1 stop
€846United Airlines
Find Deal
Tue, 4 Jun - Mon, 10 Jun
10:50 - 20:55DUB-STL
16h 05m2 stops
18:08 - 11:40STL-DUB
11h 32m1 stop
€847British Airways
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Tue, 4 Jun - Mon, 10 Jun
11:00 - 18:05DUB-STL
13h 05m1 stop
09:59 - 08:45STL-DUB
16h 46m1 stop
€848KLM
Find Deal
Fri, 24 May - Fri, 31 May
11:35 - 21:46DUB-STL
16h 11m2 stops
10:19 - 09:45STL-DUB
17h 26m2 stops
€849United Airlines
Find Deal
Sat, 15 Jun - Mon, 1 Jul
12:40 - 20:15DUB-STL
13h 35m1 stop
16:20 - 09:45STL-DUB
11h 25m1 stop
€926
Find Deal
Wed, 7 Aug - Wed, 9 Oct

Flights to St. Louis - Travel Insights & Trends

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 day to fly to St. Louis?

The average price of all flights to St. Louis clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to St. Louis is Thursday where tickets can be as cheap as €774. On the other hand, the most expensive day to fly is Monday, where prices are €939 on average.

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 January, where tickets cost €647 on average for one-way flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from Ireland is €1,133 and €971 respectively. For return trips, the best month to travel is January with an average price of €647.

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

The average price for all flights to St. Louis depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to St. Louis is generally in the afternoon, when flights cost €774 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 €880.

How far in advance should I book a flight to St. Louis?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 58 days before departure.

How long is the flight to St. Louis?

The duration of your flight to St. Louis depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular route to St. Louis on KAYAK is from Dublin, which takes 15h 45m.

Good to know

Low season

November

High season

March

Cheapest flight

€421
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly and prices are also 7% 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 St. Louis from central St. Louis?

    There are 20 km between St. Louis city centre and St. Louis.

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

    St. Louis is served by St. Louis, 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.

  • Which airline offers the most flights to St. Louis?

    Of the 9 airlines that fly to St. Louis, Southwest offers the most flights, with around 784 per week, followed by American Airlines with 314 flights per week.

See more FAQs

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, 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, +39 more

ANA, Aer Lingus, +40 more

Wednesday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Thursday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Friday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 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, +39 more

ANA, Aer Lingus, +40 more

Wednesday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Thursday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

Friday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 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
See more direct flights

Top 3 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 11272 reviews
6.7food
7.1entertainment
7.7boarding
8.1crew
7.2comfort
Airline reviews

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

2.0 MediocreAnonymous, Apr 2024SNA - IAH
Read more about United Airlines reviews

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Terrible. 2 hour delay. Sat on the tarmac. Missed my connecting flight. Had to ARGUE with Customer service to get a hotel and food. Terrible experience with my loyal carrier

Our seat tv didn’t work All the rest was perfect

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

I liked the exit row seat. Hated the distance between gates in Houston.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

Meals were adequate but could be better. Lots of movies, podcasts, tv shows. We really enjoyed using our personal headsets highly recommended. 15 hrs flight great to travel at night.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

Short flight so not much to rate. Surprised I had to pay for a soda.

the room on the plane was good but that is because flight not sold the other three seat and I had room. the food in terrible.

First the price I paid was excellent, my flight was full, but my seat was roomy. The one downside to the experience was they had games on the entertainment console. The guy behind me poked at my head about half the flight. I hope they get rid of this feature.

Very good need to offer better choice of food for business

They should. Heck planes more often not when they are suppose to be leaving causing delays

Crew was fantastic got lovely food and plenty of water. Entertainment was good. Never had to ask for anything. Left on time and got to Seattle early. Luggage did not take long either.

Always find Aer Lingus reliable and good value for money. Food on this flight was pretty basic and the headphone Jack at my seat only worked for one ear. Little disappointed in movie selection, limited on recent releases. Staff are okay - but I always buy a cheap ticket so not like I expect first class opulence anyway!!!

Boarding was so quick, flight was ahead of time which is great and the pilot spoke clearly and was letting people know everything, amazing, love travelling with you 😊

Great hospitality and service! Seats are better cushioned then some

Great hospitality and service! Seats could always be cushioned better.

I really did not like being ordered to pull my shade down by the attendants. One of them was very rude to me about it, standing there until I closed it like I was a child brusquely reaching across me to close an adjoining one. They claim it was so people who wanted to could sleep. It’s a 10:30am flight not a red eye. Closing your shade or leaving it up for natural light should be a choice. Ruined my flight!

My baggage did not arrived with me. Took 3 days to get it after so may calls and follow up

The crew was very attentive and kept busy serving a variety of treats!

Terrible. Flight was 3 hours delayed and I missed my other flight to my final destination

Offered vegetable curry when it was actually tofu which I don’t care for.

The flight was good the crew excellent…but take off delayed three hours!!!

Both mine and my husband's chairs were broken. Also it took 2 hours to get our bags after our flight which was wild.

perhaps eye contact with the cabin crew, instead of abruptness and an impatience to serve.

Not enough trash pickups throughout the flight. Everything else was great.

Overall good, the gluten free food is very hit/miss though and you must tell them you have an allergy days in advance.

Book Cheap St. Louis Plane Tickets

Recent return flight deals

 
These are the cheapest return flights to St. Louis found on KAYAK in the last 72 hours.
24/5Fri
1 stopAmerican Airlines
13h 45mDUB-STL
31/5Fri
2 stopsAmerican Airlines
22h 05mSTL-DUB
€807
24/5Fri
2 stopsAmerican Airlines
16h 02mDUB-STL
31/5Fri
2 stopsAmerican Airlines
22h 05mSTL-DUB
€812
18/10Fri
1 stop
15h 45mDUB-STL
25/10Fri
1 stop
19h 58mSTL-DUB
€822
23/5Thu
1 stopAmerican Airlines
13h 45mDUB-STL
30/5Thu
1 stopAmerican Airlines
17h 56mSTL-DUB
€825
5/6Wed
2 stopsKLM
16h 42mDUB-STL
10/6Mon
1 stopKLM
19h 30mSTL-DUB
€842
4/6Tue
1 stopUnited Airlines
11h 31mDUB-STL
10/6Mon
1 stopUnited Airlines
18h 55mSTL-DUB
€846
4/6Tue
2 stopsBritish Airways
16h 05mDUB-STL
10/6Mon
1 stopBritish Airways
11h 32mSTL-DUB
€847
24/5Fri
1 stopKLM
13h 05mDUB-STL
31/5Fri
1 stopKLM
16h 46mSTL-DUB
€848
15/6Sat
2 stopsUnited Airlines
16h 11mDUB-STL
1/7Mon
2 stopsUnited Airlines
17h 26mSTL-DUB
€849
7/8Wed
1 stop
13h 35mDUB-STL
9/10Wed
1 stop
11h 25mSTL-DUB
€926

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to St. Louis found on KAYAK in the last 72 hours.
6/5Mon
2 stopsWestJet
30h 18mDUB-STL
€421
15/9Sun
2 stopsWestJet
31h 24mDUB-STL
€441
23/7Tue
3 stops
31h 15mDUB-STL
€462
23/7Tue
2 stops
38h 50mDUB-STL
€612
5/5Sun
2 stopsWestJet
18h 16mDUB-STL
€614
15/9Sun
3 stops
31h 29mDUB-STL
€626
15/9Sun
1 stopAmerican Airlines
15h 22mDUB-STL
€714
23/7Tue
1 stopFinnair
18h 29mDUB-STL
€824
22/7Mon
1 stopAmerican Airlines
18h 09mDUB-STL
€833
5/5Sun
1 stopAer Lingus
12h 54mDUB-STL
€844

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Recent domestic flight deals

25/5Sat
multi-stopDelta
5h 21mDEN-STL
29/5Wed
multi-stopDelta
4h 55mSTL-DEN
€165
22/5Wed
multi-stopDelta
4h 05mIAD-STL
25/5Sat
multi-stopDelta
4h 23mSTL-IAD
€167
30/5Thu
multi-stopSun Country Air
17h 08mDEN-STL
9/6Sun
multi-stopSun Country Air
24h 00mSTL-DEN
€192
4/7Thu
multi-stopSun Country Air
14h 39mDEN-STL
7/7Sun
multi-stopSun Country Air
24h 34mSTL-DEN
€211
22/5Wed
directAlaska Airlines
3h 59mSEA-STL
28/5Tue
directAlaska Airlines
4h 19mSTL-SEA
€222
30/5Thu
directAlaska Airlines
4h 01mSEA-STL
5/6Wed
directAlaska Airlines
4h 19mSTL-SEA
€241
25/9Wed
directUnited Airlines
2h 21mIAD-STL
28/9Sat
multi-stopUnited Airlines
5h 41mSTL-IAD
€267
22/5Wed
multi-stopUnited Airlines
5h 59mIAD-STL
29/5Wed
directUnited Airlines
2h 10mSTL-IAD
€280
9/5Thu
directSouthwest
2h 50mLGA-STL
10/5Fri
directSouthwest
2h 25mSTL-LGA
€381
6/5Mon
directSouthwest
2h 50mLGA-STL
8/5Wed
directSouthwest
2h 25mSTL-LGA
€403

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Last minute flights to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to St. Louis that are departing in the next 10 days.
29/4Mon
multi-stopKLM
18h 46mDUB-STL
24/5Fri
multi-stopKLM
11h 18mSTL-DUB
€991
29/4Mon
multi-stopDelta
21h 28mDUB-STL
24/5Fri
multi-stopDelta
19h 35mSTL-DUB
€1,003
29/4Mon
multi-stopDelta
16h 55mDUB-STL
24/5Fri
multi-stopDelta
20h 15mSTL-DUB
€1,035

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Flights to St. Louis

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Ireland

Cabin classes: