$43 Find Cheap Flights to Alton

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Alton departing on 4/3. 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

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Everything you should know

Cheapest round-trip
$107
Overall average: $299
Frontier
Wed 4/1Mon 4/6
DEN - STL • Non-stop
Cheapest one-way
$43
Typical prices: $110-$193
Frontier
Fri 4/3
DEN - STL • Non-stop
Arrival airport
You can't fly directly to Alton. It is served by St. Louis (STL), located 13.9 miles from Alton.
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We hope you love your trip to Alton!
Flight Deals
Useful Info
Flight Deals

Cheap Flights to Alton

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to Alton 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 round-trip flight deals to Alton

Wed, Apr 1 - Mon, Apr 6
Frontier Logo
6:40 am - 9:48 am
DEN
-
STL
2h 08mnonstop
Frontier Logo
8:19 pm - 9:52 pm
STL
-
DEN
2h 33mnonstop
$107Frontier
Thu, Apr 16 - Thu, Apr 23
Frontier Logo
4:09 pm - 7:21 pm
DEN
-
STL
2h 12mnonstop
Frontier Logo
8:06 pm - 9:39 pm
STL
-
DEN
2h 33mnonstop
$111Frontier
Fri, Apr 24 - Tue, Apr 28
Southwest Logo
11:55 pm - 10:30 am
SEA
-
STL
8h 35m
1 stop
Southwest Logo
5:30 am - 6:00 pm
STL
-
SEA
14h 30m
2 stops
$260Southwest
Tue, Apr 21 - Wed, Apr 22
Southwest Logo
11:40 am - 11:15 pm
SEA
-
STL
9h 35m
2 stops
Southwest Logo
5:30 am - 6:00 pm
STL
-
SEA
14h 30m
2 stops
$265Southwest
Fri, May 15 - Tue, May 19
Delta Logo
11:59 pm - 10:32 am
SEA
-
STL
8h 33m
1 stop
Delta Logo
7:59 pm - 12:12 am
STL
-
SEA
6h 13m
1 stop
$273Delta
Tue, Jul 28 - Wed, Aug 12
Delta Logo
11:53 pm - 8:40 am
SEA
-
STL
6h 47m
1 stop
Delta Logo
6:59 pm - 12:01 am
STL
-
SEA
7h 02m
1 stop
$274Delta
Sat, Apr 11 - Mon, Apr 13
United Airlines Logo
5:45 pm - 7:22 pm
IAD
-
STL
2h 37mnonstop
United Airlines Logo
6:30 am - 11:48 am
STL
-
IAD
4h 18m
1 stop
$275United Airlines
Wed, Apr 29 - Wed, Apr 29
American Airlines Logo
6:00 am - 10:54 am
LGA
-
STL
5h 54m
1 stop
American Airlines Logo
3:43 pm - 9:18 pm
STL
-
LGA
4h 35m
1 stop
$293American Airlines
Sat, Apr 18 - Wed, Apr 22
American Airlines Logo
2:59 pm - 8:09 pm
JFK
-
STL
6h 10m
1 stop
American Airlines Logo
5:51 am - 11:30 am
STL
-
JFK
4h 39m
1 stop
$307American Airlines
Tue, Apr 21 - Sat, Apr 25
United Airlines Logo
9:59 pm - 11:57 pm
EWR
-
STL
2h 58mnonstop
United Airlines Logo
7:45 am - 2:00 pm
STL
-
EWR
5h 15m
1 stop
$352United Airlines
Useful Info

Good to know - Book Cheap Alton Plane Tickets

Low seasonJanuary
Cheapest flight$43
Most popular time to fly and prices are also 1% lower on average.
Flight from Denver to St. Louis

Flights to Alton: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew to Alton 
WaleFlew with United Airlines
IAH
-
STL
Dec 2025
Make sure your electronics are charged before boarding, the plane doesn’t have power outlets
Verified travelerFlew with Alaska Airlines
SEA
-
STL
Jul 2025
Give yourself extra time. Love the self check in options.
LarryFlew with Southwest
LAX
-
STL
Apr 2024
For long flights on airlines built for short flights (SWA) anyone over 5’ 10” is going to get cramped. Consider an Economy Plus upgrade when available.
Verified travelerFlew with Alaska Airlines
SEA
-
STL
Feb 2024
Be sure to measure your wheels for carry on my luggage was the correct size but the wheels made it over so had to check my bag wasn't happy about that since you have to pay for checked should at least get one free.

FAQs - booking Alton flights

  • How long is the flight to Alton?

    Flights from Washington, D.C.2h 14m
    Flights from New York2h 39m
    Flights from Denver2h 21m
    Flights from Boston2h 52m
    Flights from Philadelphia2h 23m
  • What is the cheapest flight to St. Louis?

    In the last 3 days, the cheapest flight deal to St. Louis was found on the route from Denver, at $107 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $287 in the last 3 days.

  • Which airlines fly to St. Louis?

    Many airlines fly to St. Louis, the most common ones being Southwest, American Airlines, and Delta. See the amount of flights per week for popular airlines flying to St. Louis.

  • How to fly to Alton?

    You cannot fly directly to Alton. KAYAK recommends you fly to Lambert-St Louis (STL) (13.92 miles from Alton). From there you can rent a car or get a taxi.

  • What airports are near Alton?

    The closest airport is Lambert-St Louis (STL) (13.92 mi). Another nearby airport is Springfield Capital (SPI) (71.17 mi). KAYAK recommends you fly to Lambert-St Louis.

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

    Central St. Louis is 13 miles away from 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 Alton?

    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 Alton.

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

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

  • What is the Hacker Fare option on flights to Alton?

    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 Alton 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 Alton?

    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 Alton 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 Alton

  • There is no major airport in Alton. It is instead served by Lambert-St Louis Airport.
  • Looking for cheap airfare to Alton? 25% of our users found round-trip tickets to Alton for the following prices or less: From Miami $301, from Fort Lauderdale $302, from Los Angeles $316
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Alton flight deals.

Reviews of the top 5 airlines flying to Alton

 
Need help choosing which airline to fly with from the United States to Alton? 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.
8.0
SouthwestOverall score based on 4324 reviews
7.5Entertainment
8.1Boarding
8.0Comfort
7.0Food
8.6Crew
Airline reviews

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

10.0 ExcellentMartie, Mar 2026
LGB - BNA
Read more Southwest reviews

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

I flew twice this week on Southwest, was delayed over 2 hours both ways. From Pittsburgh to Chicago it was due to weather but the gate agents, pilot etc were great at updating everyone. Today from Midway to Pittsburgh the plane had come from an international location, kept getting delayed, no information was given until we were delayed for the third time. It was ridiculous, whoever scheduled that plane to fly to Pittsburgh after didn’t consider a lot of things.

Boarding was easy. The seats are small and fairly uncomfortable

I was supposed to be on a later flight. When I showed up at the gate, the woman working there was extremely helpful getting moved up to this earlier flight.

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

Economy plus was so cramped I could not use my laptop. It was beyond bad.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

United Airlines is my preferred airlines and I am thankful for Gary who also help support me on the phone to switch my flight literally last min.

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

They did the one thing that really matters - got to Chicago early.

Jill was the flight attendant in first class she was fabulous!! Best flight attendant I have had in years.!! And I fly every other week. Other can learn from her!!

As a first class customer, there was no power the entire flight which limited my ability to work. I find this unacceptable. The first 11 rows on the left side of the plan were out. I was only offered the option to charge my phone which was not the issue because my laptop was out of power. I asked if there was anything that can be done for me, and the answer was, "no". I was not offered any type of compensation for this AA problem which caused me unnecessary stress due to inability to address business issues on an already challenging travel day. Flight attendants tried to reset the power once but that was the extent of their support. Very disappointing for the lack of expected services on a flight. Please contact me with customer focused response to this complaint.

There was no inflight service. Once we landed we were delayed to find a gate for an hour and a half which was 1/2 the total time in the air.

The chicken wrap was tiny ($13 for what looked like a 1/3 of a normal wrap?) and disgusting.

It was good experience this time. The flight was on time.

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

The gate agent had a really bad attitude and refused to help me get on the standby list. She just handed me a card and said I needed to call a number. I asked her to help with the AA app on my phone and she just shrugged and said she didnt know. After a few phone calls, I eventually just went to a different gate agent on the other side of the terminal and got the help I needed.

Overall, my last three trips on American Airlines have all been either delayed or "rescheduled" due to mechanical issues. At least on delay caused me to miss two possible connecting flights each later than the first. My last option for my last connection required the assistance of the onsite service desk (O'Hare Airport). The wait time for the service desk was such that it jeopardized getting booked on the last connecting flight available for the night. Suffice it to say, my latest experiences with American Airlines have caused me extensive loss of productive business and personal time and can therefore be classified as significantly less than satisfactory.

Waiting for gate in RDU for more than 20mins is crazy.

American Airlines was great and worked very hard to change my ticket so I could get an earlier, direct flight back to Dallas. However, I was informed that Kayak made mistakes with my itinerary and classified my ticket as desiring to be on the earlier flight instead of taking the necessary step of calling AA to get me on the standby list. This ended up keeping me from being added to the standby list and delayed me getting home by 6 hours. I am happy to discuss this further with Kayak so they can correct their procedures so this won't happen again.

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

Everything you need to know for your flight to Alton