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Find cheap flights from Chicago to St. Charles from $50

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to St. Charles departing on 6/22. 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
Mon 7/1
Mon 7/8

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Good to know

Low season

February

High season

June

Cheapest flight

$50
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly with an average 17% increase in price.
Flight from Chicago O'Hare Airport to St. Louis

When to book flights from Chicago to St. Charles

Are your dates flexible? Find out the best times to travel from Chicago to St. Charles based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from Chicago to St. Charles

  • Which airports will I be using when flying from Chicago to St. Charles?

    When flying out of Chicago you’ll be using one of these airports: Chicago Midway or Chicago O'Hare Intl. St. Charles does not have its own airport so you’ll be flying into nearby Lambert-St Louis airport, which is 7.2 mi away.

  • How long does a flight from Chicago to St. Charles take?

    Direct flights cover the 260 miles separating Chicago and St. Charles in about 1h 10m.

  • How many flights are there between Chicago and St. Charles?

    69 direct flights run between Chicago and St. Charles on a daily basis. On average, there are about 488 departures each week.

  • What’s the cheapest day of the week to fly between Chicago and St. Charles?

    Consider leaving on a Saturday and avoid Thursdays if you are looking for the best rates. For your return to Chicago, you’ll find the best rates on Fridays and the most expensive ones on Wednesdays.

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

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

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

  • What is the Hacker Fare option on flights from Chicago 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 to Chicago with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago 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 from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Chicago to St. Charles?

    In the last 72 hours, the cheapest one-way ticket between Chicago and St. Charles found on KAYAK was with American Airlines for $50. American Airlines offered a round-trip connection from $99 and Southern / Mokulele from $113.

See more FAQs

Top tips for finding cheap flights from Chicago to St. Charles

  • There is no airport in St. Charles. Instead, you’ll be flying into St. Louis Lambert Airport when flying between Chicago and St. Charles.
  • The cheapest flight from Chicago to St. Charles was found 50 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be December, January and February. The cheapest month to fly is September.
See more tips

Top 4 airlines serving Chicago to St. Charles

 
Need help choosing which airline to fly with from Chicago 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.
8.1
Southern / MokuleleOverall score based on 25 reviews
6.9Food
7.9Entertainment
8.3Boarding
8.1Comfort
8.9Crew
Airline reviews

Flight was cancelled twice. Moved four more times. Probably the least timely and poorly run airline I have ever experienced in my life. I have traveled hundreds of times to dozens of countries and this one takes the cake.

2.0 MediocrePaul, Apr 2024MKK - HNL
Read more about Southern / Mokulele reviews

Flight was cancelled twice. Moved four more times. Probably the least timely and poorly run airline I have ever experienced in my life. I have traveled hundreds of times to dozens of countries and this one takes the cake.

Excellent crew, good flight. Flight was delayed about 1 1/2 hours though.

Pros: "The ground crew and flight crew were great."
Cons: "Would have appreciated easier steps (lower risers) for boarding. Arthritic knee makes it hard for me to manage the high risers between steps. Also having armrests would have made the flight more comfortable."
Pros: "I loved the small craft and easy boarding."
Cons: "Flight is a little slower with a smaller plane, but that was expected."
Pros: "So fast and friendly crew. So much easier to fly to Morgantown, instead of driving. Plus the views from above are so great."
Cons: "Flight could not be better for a commuter connection."
Pros: "Awesome crew. Simple check-in and boarding. Beautiful, scenic views. A+!"

Because of storms in St Louis, plane was diverted to Kansas City. After about 1 hour stay went back to st Louis to finally reach distanation. Made for long day. But southwest took care of us. Can't fight mother nature

Long layover in Chicago. Wish that could have been lessened.

Worse experience especially since there were delays and unreasonable accommodations made

Long delay due to mechanical issues. They should have just swapped the plane and not make us wait while they figure it out. Disappointed

sw cancelled our flight 2 hours before we were to leave. Our bags were already checked. Only communication we had was a text that had a link to reschedule that did not work. When we finally got to front of line ticket agent said they could not get us on a flight until Wednesday. This was Sunday. 3 days. The. They stated since it was “weather” related they would not give us vouchers for food, hotel stay anything. So we had to book on a different airline costing us an extra $1000. Unacceptable.

Planes never have enough leg room for someone my height so my knees were cramped and therefore started aching. Also, the Wi-Fi was down so I couldn't watch anything on my phone like I anticipated.

Two hour delay including one of them on the tarmac second year in a row we’ve had a bad experience. Sad that Southwest is no longer a bargain and has failed to keep up the customer service they were once so famous for.

Everything went smoothly and the plane wasn’t full. It was delayed though. .

Really full flight, checked in ASAP and still mid Cs.

Appreciate that when flight was delayed, our next connection waited for us.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

I’ve had a couple flights this week on United that were delayed by an hour or more

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

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.

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.

The flight experience was very good! Especially the United Club!

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

The flight from Ottawa to Chicago took a lot longer due to DC in Ottawa. We got to Chicago and went to our gate to catch our flight. We only had nine minutes I found that very stressful.

Good boarding. Crew started quick with drinks and food. They came around several times for trash which I really liked. Other than turbulence due to storms in the area, flight was great.

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

Good flights. Departure and arrivals were on time. DFW was a little problematic in that the Skytrain without prior notice bypassed the Echo terminal so that delayed my arrival at my connecting flight.

Because I can’t stand very long in one place, I was allowed to reword.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

Excellent- plan was barely populated. I cannot remember a flight where I was able/encouraged to stretch out!

Great flight. Boarding was efficient and quick. On time departure and smooth flight. Flight arrived early at destination. Good experience.

Had technical issue which delayed the flight period. Flight crew knew there was 5 passengers that the connecting flight was within 15 minutes once at the gate. Rather than identify the 5 passengers to assure they got first. The flight attended mentioned it but didn't assist to assure passengers with connecting flights off first. This caused a hardship and our party of 3 missed the connecting flight.

I don't like that I have to pay if I want extra leg room. The seats are so expensive; I sit in normal seats and my legs and knees cramp the entire flight. I never feel comfortable on AA flights.

Flight was delayed at departure due to weather and the need for de-icing. The flight was smooth but there was a delay at arrival due to weather. We were in a hold for 20 minutes or more. The flight arrived more than 30 minutes late. Airlines have no control over the weather and I'm glad that they follow all safety procedures. Had to wait a long time for my checked luggage. Whole process was slow and the bags arrived wet due to the rain. The onboard wifi and entertainment access was spotty and the signal was dropped several times. Otherwise the crew was great and friendly. They tried to get everyone's bags stowed and seated so we could take off.

Regarding the boarding: it needs more efforts to make it more convenient

Book cheap flights from Chicago to St. Charles

Recent round-trip flight deals

6/22Sat
nonstopAmerican Airlines
1h 17mORD-STL
6/24Mon
nonstopAmerican Airlines
1h 22mSTL-ORD
$99
6/26Wed
nonstopAmerican Airlines
1h 13mORD-STL
6/28Fri
nonstopAmerican Airlines
1h 22mSTL-ORD
$108
6/14Fri
1 stopSouthern / Mokulele
8h 30mORD-STL
6/15Sat
1 stopSouthern / Mokulele
19h 40mSTL-ORD
$113
6/26Wed
1 stopSouthern / Mokulele
19h 20mORD-STL
6/28Fri
1 stopSouthern / Mokulele
26h 10mSTL-ORD
$117
6/26Wed
nonstopUnited Airlines
1h 21mORD-STL
6/28Fri
nonstopUnited Airlines
1h 25mSTL-ORD
$157
6/26Wed
2 stops
23h 12mORD-STL
6/28Fri
1 stop
3h 35mSTL-ORD
$159
6/14Fri
1 stop
8h 30mORD-STL
6/15Sat
2 stops
9h 13mSTL-ORD
$182
6/29Sat
1 stopDelta
3h 32mMDW-STL
7/6Sat
1 stopDelta
5h 40mSTL-MDW
$226
6/22Sat
nonstopUnited Airlines
1h 24mORD-STL
6/23Sun
nonstopUnited Airlines
1h 24mSTL-ORD
$227
11/9Sat
2 stopsDelta
10h 56mORD-STL
11/10Sun
1 stopDelta
5h 51mSTL-ORD
$251

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Recent one-way flight deals

6/22Sat
nonstopAmerican Airlines
1h 17mORD-STL
$50
7/1Mon
nonstopAmerican Airlines
1h 13mORD-STL
$59
6/6Thu
1 stopSouthern / Mokulele
19h 20mORD-STL
$62
6/30Sun
1 stopSouthern / Mokulele
23h 35mORD-STL
$63
9/25Wed
1 stopDelta
4h 45mMDW-STL
$78
7/30Tue
1 stopDelta
6h 17mORD-STL
$78
8/27Tue
3 stopsSpirit Airlines
24h 49mORD-STL
$89
6/26Wed
2 stopsSpirit Airlines
23h 12mORD-STL
$90
8/1Thu
nonstopUnited Airlines
1h 20mORD-STL
$115
7/5Fri
nonstopUnited Airlines
1h 23mORD-STL
$144

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Last minute flights from Chicago to St. Charles

Last minute flight, train and bus deals

6/3Mon
multi-stopSouthern / Mokulele
11h 30mORD-STL
6/4Tue
multi-stopSouthern / Mokulele
3h 35mSTL-ORD
$119
6/4Tue
multi-stopSouthern / Mokulele
14h 05mORD-STL
6/6Thu
multi-stopSouthern / Mokulele
4h 10mSTL-ORD
$122
6/2Sun
multi-stopSouthern / Mokulele
15h 25mORD-STL
6/3Mon
multi-stopSouthern / Mokulele
14h 40mSTL-ORD
$123
6/6Thu
multi-stop
23h 35mORD-STL
6/11Tue
multi-stop
17h 01mSTL-ORD
$143
6/6Thu
multi-stop
8h 30mORD-STL
6/11Tue
multi-stop
24h 44mSTL-ORD
$160
6/6Thu
nonstopAmerican Airlines
1h 17mORD-STL
6/9Sun
nonstopAmerican Airlines
1h 22mSTL-ORD
$423
6/5Wed
nonstopAmerican Airlines
1h 27mORD-STL
6/5Wed
nonstopAmerican Airlines
1h 24mSTL-ORD
$437
6/6Thu
nonstopUnited Airlines
1h 21mORD-STL
6/7Fri
nonstopUnited Airlines
1h 24mSTL-ORD
$467
6/3Mon
multi-stopDelta
4h 01mMDW-STL
6/4Tue
multi-stopDelta
6h 34mSTL-MDW
$471
6/3Mon
multi-stopDelta
5h 37mORD-STL
6/4Tue
multi-stopDelta
6h 31mSTL-ORD
$476

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Flights to St. Charles