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Find cheap flights to St. Charles from $39

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. Charles departing on 5/17. 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
Tue 5/28
Tue 6/4

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Good to know

Low season

January

High season

November

Cheapest flight

$39
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Denver to St. Louis

FAQs - booking St. Charles flights

  • How long is the flight to St. Charles?

    Flights from Boston2h 57m
    Flights from Washington, D.C.2h 11m
    Flights from New York2h 40m
    Flights from Phoenix3h 08m
    Flights from Denver2h 19m
  • What is the cheapest flight to St. Louis?

    If traveling to St. Louis, the cheapest city to fly from in the last 3 days was Denver, with flights as low as $39 one-way and $57 round-trip. Flights from New York are the most searched and start at $231 for a return trip.

  • Which airlines fly to St. Louis?

    Southwest, American Airlines, and Delta usually have the most frequent connections from United States to St. Louis. See the amount of flights per week for popular airlines flying to St. Louis.

  • How to fly to St. Charles?

    You cannot fly directly to St. Charles. KAYAK recommends you fly to Lambert-St Louis (STL) (7.16 miles from St. Charles). From there you can rent a car or get a taxi.

  • What airports are near St. Charles?

    The closest airport is Lambert-St Louis (STL) (7.16 mi). Other nearby airports are Springfield Capital (SPI) (85 mi), Quincy Regional (UIN) (87.69 mi) or Columbia Regional (COU) (92.78 mi). KAYAK recommends you fly to Lambert-St Louis.

  • How far is St. Louis from central St. Louis?

    You’ll need to travel 13 miles to reach the St. Louis city center from St. Louis.

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

    All flights to St. Louis land at St. Louis. The airport code is STL,and it can also be referred to as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl.

  • How does KAYAK find such low prices on flights to St. Charles?

    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. Charles.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Charles 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 St. Charles?

    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. Charles 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. Charles?

    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. Charles up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to St. Charles

  • There is no major airport in St. Charles. It is instead served by Lambert-St Louis Airport.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Charles flight deals.

Top 5 airlines flying to St. Charles

 
Need help choosing which airline to fly with from the United States to St. Charles? 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
Alaska AirlinesOverall score based on 9117 reviews
7.3entertainment
7.3food
8.2boarding
8.6crew
7.9comfort
Airline reviews

I really like Alaska airline, it's my favorite airline❤️

10.0 Excellentrose, Apr 2024SAN - EWR
Read more about Alaska Airlines reviews

I really like Alaska airline, it's my favorite airline❤️

Alaska continues to provide one of the best domestic US airline experiences.

Too many people with oversized carry-ons. Uncomfortable seats. flight was too crowded.

Alaska Airlines was fantastic. Kayak on the other hand was extremely poor. I got tickets through Kayak for a flight to a funeral. The date got changed less than 12 hours after I made my reservations. When I attempted to change my flights through Kayak, I was unable to use either the website or the phone system. The phone matrix did not give an option to cancel or change. The website said Kayak could not find any record of me making airline reservations through Kayak and even through I never left the Kayak website when making the reservations to my knowledge. After more than a half hour of frustration on the phone and computer ( on top of dealing with the death of a member of my family) I finally contacted Alaska Airline directly and they cancelled my flight and refunded the cost very quickly and efficiently. Alaska Airlines gets 10 stars. Kayak gets zero stars and has permanently lost a customer. I will never use Kayak again.

Assigned last seat in row Did not recline at all Alaska Air seemed to have more leg room than my last few flights on United Yay!

Pleasant flight, now wifi, but did get pushed to the exit row gracefully cause I am a tall man. Was a pleasant thank you.

Long flights are best when the seats have movies and shows to watch.

The WIFI didn't work well enough to get through even 5 minutes of a movie I had selected (it just kept pausing and spinning), and I just gave up and read a book. The selection of movies was a little sparse though, so reading wasn't that bad of an option. This was an older 737-800, with undersized overhead bins -- but it doesn't make sense to me that we are told to slide our bags in with the wheels facing us (most people ignore that and put the handles facing us). This makes it more difficult to remove the bags (no handle). The flight went well, and the fruit/cheese platter I pre-ordered was good -- although it is a little annoying to have to pre-order for this (but I suppose it saves time). When I pre-order it automatically gets charged to my personal credit card (Alaska VISA), when I'd prefer to use my corporate card for that on business trips.

Good - San Jose security is a breeze. Exact opposite of San Diego. Flight on time. Bad - FA's were not that cheery or polite. I thought we may blow out a tire as the pilot slammed down a hard landing in perfect conditions. He came in pretty hot like he had a date waiting.

I usually choose Alaska Airlines over any other airline. They try the hardest to make flying a great experience.

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Horrible. This was not first class. This was a connecting flight whi h was late. My original flight never came. I hated the fact that delta gave me a connecting flight from New York to Orlando Florida. No meals and the television screens were not working. There wasn't even any power to charge your phones. This is NOT FIRST CLASS DELTA!!! Do better next time!

This flight was ridiculous. I had to have a connecting flight from New York to orlando Florida??? The flight left late and because it was a short flight there was no first class amenities. I had one alcohol drink. The flight crew was fine, but it sure did not feel like first class. Delta to me dropped the ball by giving me a connecting flight. By the time we got to Raleigh we would have missed the next flight. Lucky for me the flight never came so now I was stuck waiting for a later flight that came in late also.

Our flight was delayed in Atlanta. The staff could have gave us an explanation for the delay and how long it would be.

There was a group of school age passengers that were very loud and unruly with their chaperones were no where to be found.

Boarding was unorganized. They expected passengers to ask people to move their assigned seat they paid for in order to sit together. The seats even in comfort are smaller than other airlines and the flight attendants appeared not to be well prepared

The WiFi didn’t work and the seats are too close together. Very uncomfortable.

I was told we'd have a hot breakfast option in first class, so I chose not get a hot breakfast. It was a very strange meal, but the fresh fruit was very good quality. Service was excellent from ORD to ELP. No service from MBS to ORD, not even water. However, when flying American from FNT to ORD, which is a shorter flight, they at least pass out snacks and offer water.

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

So so. Terrible aircraft choice for that leg of the flight.

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.

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

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.

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

this is starting to seem like an american airlines standard. delayed flights and fake apologies… getting tired of it

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Cold air blew constantly on my legs almost making me numb.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

Book Cheap St. Charles Plane Tickets

Recent round-trip flight deals

5/29Wed
nonstopFrontier
2h 10mDEN-STL
6/4Tue
nonstopFrontier
2h 36mSTL-DEN
$57
5/18Sat
nonstopFrontier
2h 10mDEN-STL
5/21Tue
nonstopFrontier
2h 36mSTL-DEN
$58
5/22Wed
1 stopDelta
4h 19mIAD-STL
5/29Wed
1 stopDelta
4h 06mSTL-IAD
$178
5/22Wed
1 stopDelta
5h 05mDCA-STL
5/29Wed
1 stopDelta
4h 12mSTL-DCA
$178
5/18Sat
nonstopAmerican Airlines
2h 37mDCA-STL
5/22Wed
nonstopAmerican Airlines
1h 59mSTL-DCA
$184
6/11Tue
nonstopAmerican Airlines
2h 28mDCA-STL
6/12Wed
nonstopAmerican Airlines
2h 01mSTL-DCA
$189
8/21Wed
nonstopUnited Airlines
2h 21mIAD-STL
8/23Fri
1 stopUnited Airlines
5h 55mSTL-IAD
$204
8/21Wed
nonstopUnited Airlines
2h 21mIAD-STL
8/23Fri
nonstopUnited Airlines
2h 08mSTL-IAD
$213
6/4Tue
nonstopAlaska Airlines
4h 01mSEA-STL
6/7Fri
nonstopAlaska Airlines
4h 19mSTL-SEA
$257
5/22Wed
nonstopAlaska Airlines
3h 59mSEA-STL
5/26Sun
nonstopAlaska Airlines
4h 14mSTL-SEA
$277

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Recent one-way flight deals

5/17Fri
nonstopFrontier
2h 10mDEN-STL
$39
5/19Sun
nonstopFrontier
2h 10mDEN-STL
$40
8/14Wed
1 stopAmerican Airlines
9h 05mDEN-STL
$78
5/21Tue
nonstopAmerican Airlines
2h 16mDCA-STL
$80
5/21Tue
nonstopUnited Airlines
2h 27mIAD-STL
$80
5/28Tue
1 stopDelta
5h 36mDEN-STL
$88
5/21Tue
1 stopDelta
5h 48mIAD-STL
$89
5/25Sat
nonstopUnited Airlines
2h 12mIAD-STL
$114
6/4Tue
nonstopAlaska Airlines
4h 01mSEA-STL
$119
5/26Sun
nonstopAlaska Airlines
3h 58mSEA-STL
$139

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Last minute flights to St. Charles

Last minute flight, train and bus deals

5/3Fri
multi-stop
19h 55mATL-STL
5/6Mon
multi-stop
8h 51mSTL-ATL
$188
5/1Wed
multi-stopFrontier
10h 19mDEN-STL
5/7Tue
nonstopFrontier
2h 30mSTL-DEN
$189
4/29Mon
multi-stopAmerican Airlines
10h 29mSEA-STL
5/2Thu
multi-stopAmerican Airlines
9h 56mSTL-SEA
$264
4/29Mon
multi-stopDelta
8h 16mSEA-STL
5/1Wed
multi-stopDelta
7h 08mSTL-SEA
$266
4/30Tue
nonstopAmerican Airlines
2h 54mLGA-STL
5/7Tue
nonstopAmerican Airlines
2h 21mSTL-LGA
$341
4/30Tue
multi-stopUnited Airlines
7h 08mSEA-STL
5/1Wed
multi-stopUnited Airlines
11h 23mSTL-SEA
$356
5/1Wed
multi-stopDelta
5h 26mEWR-STL
5/8Wed
multi-stopDelta
5h 55mSTL-EWR
$360
4/29Mon
multi-stopUnited Airlines
13h 08mSEA-STL
5/2Thu
multi-stopUnited Airlines
8h 38mSTL-SEA
$361
5/3Fri
multi-stopAlaska Airlines
13h 39mLAX-STL
5/4Sat
multi-stopAlaska Airlines
23h 12mSTL-LAX
$545
4/30Tue
multi-stopAlaska Airlines
10h 29mLAX-STL
5/1Wed
multi-stopAlaska Airlines
11h 38mSTL-LAX
$613

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