$41 Find Cheap Flights to St. Charles

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 8/4. 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
$125
Typical prices: $304-$192
Frontier
Tue 9/1Thu 9/10
DFW - STL • Non-stop
Cheapest one-way
$41
Typical prices: $78-$297
Frontier
Tue 8/4
DFW - STL • Non-stop
Arrival airport
You can't fly directly to St. Charles. It is served by St. Louis (STL), located 7.2 miles from St. Charles.
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Flight Deals
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Flight Deals

Cheap Flights to St. Charles

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

Tue, Sep 1 - Thu, Sep 10
Frontier Logo
12:49 pm - 2:48 pm
DFW
-
STL
1h 59mnonstop
Frontier Logo
6:41 pm - 8:46 pm
STL
-
DFW
2h 05mnonstop
$125Frontier
Sat, Sep 5 - Thu, Sep 10
Frontier Logo
12:49 pm - 2:48 pm
DFW
-
STL
1h 59mnonstop
Frontier Logo
6:41 pm - 8:46 pm
STL
-
DFW
2h 05mnonstop
$126Frontier
Tue, Jun 30 - Mon, Aug 17
American Airlines Logo
3:20 pm - 7:00 pm
DCA
-
STL
4h 40m
1 stop
American Airlines Logo
5:57 pm - 9:14 pm
STL
-
DCA
2h 17mnonstop
$269American Airlines
Sat, Jul 4 - Mon, Jul 6
American Airlines Logo
9:59 am - 11:18 am
DCA
-
STL
2h 19mnonstop
American Airlines Logo
6:43 am - 9:46 am
STL
-
DCA
2h 03mnonstop
$270American Airlines
Tue, Jun 30 - Fri, Jul 3
Southwest Logo
11:45 am - 2:50 pm
DCA
-
STL
4h 05m
1 stop
Southwest Logo
12:40 pm - 7:55 pm
STL
-
DCA
6h 15m
1 stop
$272Southwest
Wed, Jul 29 - Sun, Aug 2
Multiple Airlines Logo
8:33 pm - 5:37 pm
IAD
-
STL
22h 04m
1 stop
Multiple Airlines Logo
4:09 pm - 11:20 am
STL
-
IAD
18h 11m
2 stops
$273Multiple Airlines
Wed, Jul 1 - Tue, Jul 7
Southwest Logo
6:00 am - 11:15 am
DCA
-
STL
6h 15m
1 stop
Southwest Logo
6:15 pm - 11:15 pm
STL
-
DCA
4h 00m
1 stop
$277Southwest
Fri, Jul 3 - Sat, Jul 4
Delta Logo
6:00 pm - 11:56 pm
IAD
-
STL
6h 56m
1 stop
Delta Logo
8:00 am - 2:46 pm
STL
-
IAD
5h 46m
1 stop
$277Delta
Wed, Aug 5 - Tue, Aug 11
Delta Logo
6:00 am - 11:46 am
HOU
-
STL
5h 46m
1 stop
Delta Logo
11:00 am - 4:25 pm
STL
-
HOU
5h 25m
1 stop
$307Delta
Wed, Jul 22 - Wed, Jul 29
Multiple Airlines Logo
6:04 pm - 11:59 pm
SEA
-
STL
3h 55mnonstop
Multiple Airlines Logo
7:03 pm - 10:39 am
STL
-
SEA
17h 36m
1 stop
$368Multiple Airlines
Useful Info

Good to know - Book Cheap St. Charles Plane Tickets

Low seasonJanuary
Cheapest flight$41
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Dallas/Fort Worth Airport to St. Louis

Flights to St. Charles: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew to St. Charles 
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 St. Charles flights

  • How long is the flight to St. Charles?

    Flights from Boston2h 50m
    Flights from Atlanta1h 37m
    Flights from New York LaGuardia Airport2h 30m
    Flights from Washington, D.C. Reagan-National Airport2h 10m
    Flights from Denver1h 55m
  • What is the cheapest flight to St. Louis?

    In the last 5 days, the cheapest flight deal to St. Louis was found on the route from Dallas, at $125 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $318 in the last 5 days.

  • Which airlines fly to St. Louis?

    Many airlines fly to St. Louis, the most common ones being Southwest, American Airlines, and United Airlines. 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) or Columbia Regional (COU) (92.78 mi). KAYAK recommends you fly to Lambert-St Louis.

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

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

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

    All flights to St. Louis land at Lambert-St Louis Airport. 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.

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.
  • Looking for cheap airfare to St. Charles? 25% of our users found round-trip tickets to St. Charles for the following prices or less: From Miami $268, from Fort Lauderdale $286, from Los Angeles $348
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Charles flight deals.

Reviews of the 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.
7.9
SouthwestOverall score based on 4235 reviews
7.5Entertainment
8.1Boarding
8.6Crew
8.0Comfort
7.0Food
Airline reviews

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

10.0 ExcellentAnonymous, Jun 2026
OKC - LAS
Read more Southwest reviews

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

The flight was smooth. The Southwest experience has degraded overall, but this one was okay.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

The checking experience in Orlando was terrible, almost missed the flight. Too many travelers and Southwest completely understaffed.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Flight was great! This flight from Atlanta was even better than when I paid for Comfort from SNA to Atlanta.

Connection flights should be spaced out farther because too close I missed my connection.

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

On time! There were plenty of airport employees who were able to keep us moving in the right direction. The crew on the plane were professional.

Left /arrived on time. Decent seat space. Like the wifi/plugs and entertainment. Windows and tray table were kinda gross. Attendants didn't start snack service til 40mins before landing. Two rows before us, captain came on to say there's turbulence and recalled staff to seats. So, no drink/snack. Later, attendants didn't stop to see if we had trash nor even look our way. Felt invisible! Almost all pilot announcements were not only unintelligible, but so quiet. We had no idea what she said.

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

Gate agent was unhelpful for handicapped boarding. Flight attendant seemed untrained.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

The flight was delayed, they didn’t even have water for the toilets or for drinks

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

Boarded early, left early, arrived 40 mins early! A win win for me!

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

The flight attendants were extremely sourly and borderline rude. I did not feel appreciated as an AA customer once.

The flight back to Dallas was delayed, which has happened to me several times with American Airlines. There was no announcement, no update sent out, no compensation offered for the inconvenience.

It wa sort of on time; the cab was left with some trash

Our flight from JFK to Madrid was delayed. We had to go from one side of the Madrid airport (Terminal 4s to the far end of terminal 4 - Gate K98) to our gate in less than 30 minutes. Put passport control and security/baggage check and that’s very hard unless you’re Usain Bolt. I called Iberia Airlines and the telephone customer service told me that I was going to have to pay to re-book. Luckily the help desk in the airport (who was dealing with dozens of people from the same JFK-Madrid flight) did not charge us extra to reschedule to a flight 8 hours later. They also gave us a voucher for breakfast and lunch. Glad the actual person at the airport had some actual sense.

As always, most AA flights that we fly are almost ALWAYS delayed and that too multiple times. Very frustrating

Boarding was smooth and seamless and the flight was without incident.

Our flight was repeatedly delayed for maintenance problems: scheduled for 9.30am, eventually delayed to 7pm! Very very inconvenient! AA should have provided a substitute plane much earlier.. On the other hand, Customer Service crew in Charlotte helped us to reach NY (LGA) by late afternoon. Thank you Patricia!! The actual flight was quick and very comfortable. As always a. excellent, professional crew. [no food on a a short hop).

Take-off delayed an hour because of a missing flight officer, so,arrived in Charlotte lates causing many passengers to miss connections. Otherwise a very good flight, safe and comfortable, with an excellent professional crew.

Little time between flight from Dallas to flight to Gainesville. We chose this one, 43 minutes between, because the price for a connection with at least an hour between, was so much higher. Had to ask passengers on the Dallas flight to please allow us to deplane ahead of them. The economy passengers allowed this. We had to walk very fast to the next gate, 35 gates away. Thankfully all in the same terminal. Getting to the small Gainesville plane was a little confusing as you enter an area that is boarding many small planes at the same time. We stood in the wrong line for about 15 seconds before realizing it was not our Gainesville flight. Since I had boarded at this gate in the past, I knew to check the signs carefully so we weren’t lost. The first class seat experience was wonderful. I really enjoyed the upgrade. We were offered an alcohol drink as soon as we sat down. I got something different but it was a great gesture especially since we really had to hurry to make the flight. We had packed expecting we might miss this connection, but made it. Our luggage didn’t miss the flight. American Airlines delivered our bags to our home the next day. That was very convenient!

The plane was large, not full, but one with 3 seats near each window and 4 in a row in the middle of the plane. There were screens on the backs of the seats for entertainment and information. To use the entertainment one needs ear plugs that physically plug into the screen. My husband had some he let me use as I only had blue tooth type. The stewards gave out some headphones to some, but when my neighbor asked for some, the steward said no. So maybe they ran out? Idk. Bring the old kind of headphones or earbuds if you want entertainment in case this is the type of entertainment offered. We had a very tight connection in Miami. 43 minutes. The other economy passengers allowed us to get ahead of them because I asked if we could since we were near boarding time for our next flight and 35 gates away. They were extremely kind. First class wasn’t going to allow us to pass through. We did make the next flight. Our baggage didn’t, but they were delivered to us the next day and we were prepared with essentials in our carry on packs.

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

The staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

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