Cheap flights from Chicago (CHI) to St. Charles, MO from $53

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/10. 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.
CHI — STL
Jun 16 — Jun 231

The best prices from Chicago to St. Charles are usually found in September or March, booked 50 days in advance, depart on a Wednesday or Friday and return on a Thursday

Cheap flight deals from Chicago to St. Charles

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to St. Charles (CH5). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 11, 2024.

Popular in

January

Cheapest in

September

Round-trip from

$318

One-way from

$83
High demand for flights, 17% potential price rise
Best time to find cheap flights, 16% potential price drop
From Chicago (CHI) to St. Charles
One-way flight from Chicago (CHI) to St. Charles

How far in advance should I book a flight from Chicago to St. Charles?

Travelers have found it’s best to book a flight 51 days in advance to save up to 166% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 51 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Chicago to St. Charles 1-2 weeks in advance for as low as $240, or $240 for flights within the next 24 hours.

What is the cheapest month to fly from Chicago to St. Charles?

Due to multiple factors, expect to potentially pay more when booking in January. For low rates, September can be a great choice for travel to St. Charles. Flights to St. Charles from Chicago in September are about $273 on average during September, but can be found for as low as $128.

What is the cheapest time of day to fly from CHI to CH5?

When flying from Chicago to St. Charles, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap Chicago to St. Charles flights in June & July 2024

Find cheap flight options from Chicago to St. Charles specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,117,830 searches. Prices were last updated on June 11, 2024.
Listed are some of the best fares we've found on flights departing from Chicago to St. Charles in 2024. For more flight deals, be sure to check back very soon.
Mon 7/228:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Tue 7/2312:00 pmSTL - ORD
1 stop4h 10mSouthern / Mokulele
Deal found 6/10$111
Sun 6/309:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
Tue 7/212:00 pmSTL - ORD
1 stop19h 40mSouthern / Mokulele
Deal found 6/10$112
Thu 6/208:23 pmORD - STL
1 stop14h 19mFrontier
Sat 6/223:08 pmSTL - ORD
1 stop8h 55mFrontier
Deal found 6/10$114
Tue 6/186:00 amORD - STL
1 stop8h 47mMultiple Airlines
Thu 6/2012:15 pmSTL - ORD
1 stop3h 35mMultiple Airlines
Deal found 6/10$115
Tue 6/186:00 amORD - STL
1 stop8h 47mMultiple Airlines
Wed 6/1912:15 pmSTL - ORD
1 stop3h 35mMultiple Airlines
Deal found 6/10$116
Thu 7/48:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Fri 7/52:00 pmSTL - ORD
1 stop26h 10mSouthern / Mokulele
Deal found 6/10$117
Sat 6/158:20 pmORD - STL
1 stop15h 25mSouthern / Mokulele
Mon 6/1712:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 6/11$118
Thu 6/138:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Sat 6/1512:00 pmSTL - ORD
1 stop4h 10mSouthern / Mokulele
Deal found 6/10$121
Wed 6/129:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
Mon 6/1712:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 6/10$122

Chicago to St. Charles 2024 flight deals

Discover exclusive flight deals for travel between Chicago and St. Charles in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 11, 2024.
Listed are some of the best fares we've found on flights departing from Chicago to St. Charles in 2024. For more flight deals, be sure to check back very soon.
Fri 8/169:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
Sat 8/3112:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 6/10$110
Mon 7/228:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Tue 7/2312:00 pmSTL - ORD
1 stop4h 10mSouthern / Mokulele
Deal found 6/10$111
Sun 6/309:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
Tue 7/212:00 pmSTL - ORD
1 stop19h 40mSouthern / Mokulele
Deal found 6/10$112
Thu 6/208:23 pmORD - STL
1 stop14h 19mFrontier
Sat 6/223:08 pmSTL - ORD
1 stop8h 55mFrontier
Deal found 6/10$114
Tue 6/186:00 amORD - STL
1 stop8h 47mMultiple Airlines
Thu 6/2012:15 pmSTL - ORD
1 stop3h 35mMultiple Airlines
Deal found 6/10$115
Tue 6/186:00 amORD - STL
1 stop8h 47mMultiple Airlines
Wed 6/1912:15 pmSTL - ORD
1 stop3h 35mMultiple Airlines
Deal found 6/10$116
Thu 7/48:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Fri 7/52:00 pmSTL - ORD
1 stop26h 10mSouthern / Mokulele
Deal found 6/10$117
Sat 6/158:20 pmORD - STL
1 stop15h 25mSouthern / Mokulele
Mon 6/1712:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 6/11$118
Sat 8/109:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
Wed 8/1412:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 6/10$119

Chicago to St. Charles flights leaving soon

Find last-minute flight options from Chicago to St. Charles for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 11, 2024.
Have a look at some of the flights available from Chicago to St. Charles departing last-minute. Users should examine the flight details to ensure there are no surprises.
Thu 6/208:23 pmORD - STL
1 stop14h 19mFrontier
Sat 6/223:08 pmSTL - ORD
1 stop8h 55mFrontier
Deal found 6/10$114
Tue 6/186:00 amORD - STL
1 stop8h 47mMultiple Airlines
Thu 6/2012:15 pmSTL - ORD
1 stop3h 35mMultiple Airlines
Deal found 6/10$115
Tue 6/186:00 amORD - STL
1 stop8h 47mMultiple Airlines
Wed 6/1912:15 pmSTL - ORD
1 stop3h 35mMultiple Airlines
Deal found 6/10$116
Thu 6/209:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
Sun 6/2312:00 pmSTL - ORD
1 stop4h 10mSouthern / Mokulele
Deal found 6/11$122
Fri 6/218:58 pmMDW - STL
1 stop13h 44mFrontier
Mon 6/247:29 pmSTL - MDW
1 stop10h 00mFrontier
Deal found 6/10$123
Mon 6/178:25 amORD - STL
1 stop11h 30mMultiple Airlines
Mon 6/1710:36 pmSTL - ORD
1 stop11h 55mMultiple Airlines
Deal found 6/10$128
Fri 6/217:05 amORD - STL
1 stop5h 00mSouthern / Mokulele
Sat 6/2212:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 6/10$129
Thu 6/208:25 amORD - STL
1 stop11h 30mSouthern / Mokulele
Sun 6/2312:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 6/10$130
Thu 6/209:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
Sun 6/2312:00 pmSTL - ORD
1 stop4h 10mSouthern / Mokulele
Deal found 6/11$131

One-way flights to St. Charles from Chicago

Search for one-way flight options from Chicago to St. Charles. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 11, 2024.
If you're seeking multiple options on one-way flights from Chicago to St. Charles, be sure to check out these deals, which are updated often. Those seeking round-trip flights from Chicago to St. Charles should utilize the search form at the the top of the page.
Sat 8/101:16 pmORD - STL
Nonstop1h 20mUnited Airlines
Deal found 6/11$53
Tue 6/256:00 amMDW - STL
1 stop8h 47mFrontier
Deal found 6/9$59
Mon 7/14:05 pmORD - STL
Nonstop1h 13mAmerican Airlines
Deal found 6/11$59
Sun 6/169:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
Deal found 6/10$60
Mon 6/248:25 amORD - STL
1 stop11h 30mSouthern / Mokulele
Deal found 6/10$61
Sun 7/79:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
Deal found 6/9$64
Mon 9/99:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
Deal found 6/10$66
Wed 7/109:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
Deal found 6/10$67
Fri 6/288:20 pmORD - STL
1 stop15h 25mSouthern / Mokulele
Deal found 6/10$68

Find flights from Chicago to St. Charles within your budget

Customize your flight search to find flights from Chicago to St. Charles that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 11, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$105 - $222

Route

Depart

Return

Price

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 8/6

Nonstop1h 24m

Lambert-St Louis

Wed 8/7

Nonstop1h 22m

$105

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Fri 8/16

1 stop14h 05m

Lambert-St Louis

Sat 8/31

1 stop3h 35m

$110

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Mon 7/22

1 stop8h 30m

Lambert-St Louis

Tue 7/23

1 stop4h 10m

$111

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sun 6/30

1 stop19h 20m

Lambert-St Louis

Tue 7/2

1 stop19h 40m

$112

Chicago MidwayLambert-St Louis

MDW - STL

MDWSTL

Chicago Midway

Fri 6/21

1 stop13h 44m

Lambert-St Louis

Mon 6/24

1 stop10h 00m

$123

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 7/9

Nonstop1h 20m

Lambert-St Louis

Tue 7/16

Nonstop1h 25m

$137

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 7/9

1 stop14h 56m

Lambert-St Louis

Tue 7/16

1 stop3h 35m

$138

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Fri 9/13

1 stop24h 00m

Lambert-St Louis

Mon 9/16

3 stops32h 49m

$190

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 7/4

2 stops10h 17m

Lambert-St Louis

Mon 7/8

1 stop4h 53m

$222

Flights are sorted by cheapest first

Deals found on 6/11

How far ahead should I book a flight from Chicago to St. Charles?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to St. Charles. Price data was last updated on May 31, 2024.
Booking 50 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to St. Charles. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

What is the cheapest day to fly from Chicago to St. Charles?

Use this chart to determine the cheapest time to fly round-trip from Chicago to St. Charles. Price data was last updated on June 9, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Chicago to St. Charles flight should consider departing on Saturday evenings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Chicago to St. Charles

Have a flexible travel schedule? Discover the best time to fly to St. Charles from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in St. Charles by month

Plan your trip to St. Charles by taking into account the average temperature and rainfall totals by month.

STL

Temperature

32 - 80.6 °F

If weather is an important factor for your trip to St. Charles, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Charles

Get insights into the airlines that provide service to St. Charles. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Charles. Reviews last updated June 11, 2024.
Read through reviews of airlines operating flights from Chicago to St. Charles, such as Delta, American Airlines and Southern / Mokulele. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
5,889 reviews

Crew

8.7

Overall

8.2

Food

7.3

Boarding

8.3

Entertainment

7.8

Comfort

8.1

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.2
Very good
5,889 reviews
Southwest
8.2
Very good
5,889 reviews

Crew

8.7

Overall

8.2

Food

7.3

Boarding

8.3

Entertainment

7.8

Comfort

8.1

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

8.0
Very good
10,277 reviews
Southwest
8.2
Very good
5,889 reviews

Crew

8.7

Overall

8.2

Food

7.3

Boarding

8.3

Entertainment

7.8

Comfort

8.1

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

7.4
Good
10,629 reviews
Southwest
8.2
Very good
5,889 reviews

Crew

8.7

Overall

8.2

Food

7.3

Boarding

8.3

Entertainment

7.8

Comfort

8.1

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

7.3
Good
14,129 reviews
Southwest
8.2
Very good
5,889 reviews

Crew

8.7

Overall

8.2

Food

7.3

Boarding

8.3

Entertainment

7.8

Comfort

8.1

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Related info for your journey

Find useful and relevant information for your journey from Chicago to St. Charles. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find flights from Chicago to St. Charles for under $200 on Cheapflights?

    Yes, there are multiple flights from Chicago to St. Charles for under $200. The cheapest flight booked recently is on American Airlines for just $105, but on average you can expect to pay $122.

  • Are there nonstop flights from Chicago to St. Charles for under $200 on Cheapflights?

    Cheapflights has at least 20 direct flights from Chicago to St. Charles under $200. A good price for a nonstop flight from Chicago to St. Charles is less than $174.

  • Are there last-minute flights available from Chicago to St. Charles for under $200?

    There are currently 20+ open flights from Chicago to St. Charles within the next 7 days for less than $200.

  • What days are nonstop flights available from Chicago to St. Charles?

    Nonstop flights are available for this route on the following days: Friday.

  • How many flights depart from Chicago to St. Charles on average per day?

    On average, you can expect to see 3 flights from Chicago to St. Charles a day.
    Morning (6am - Noon) - 100% of flight departures

  • How long is the flight from Chicago to St. Charles?

    American Airlines, Southern / Mokulele, and Frontier can get you from Chicago to St. Charles in just under 1h 24m. Your travel time can differ by up to 12h 41m. Airlines will cover a distance of 259 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Chicago to St. Charles one-way?

    The cheapest airlines for a one-way flight from Chicago to St. Charles are United Airlines ($53), Frontier ($59), and American Airlines ($59).

  • What are the most reliable airlines from Chicago to St. Charles?

    Consider Sun Country Air (100%), Air New Zealand (85%) or Air Canada (85%) when booking your flight. These represent the most reliable airlines when flying from Chicago to St. Charles.

  • What are the cheapest flights from Chicago to St. Charles?

    On average you can expect to pay $244 for a flight from Chicago to St. Charles. The cheapest flight overall is $58 while the most popular route, (Chicago O'Hare Intl - Lambert-St Louis) is currently priced at $111.

  • What does ORD to STL mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Chicago O'Hare Intl Airport to Lambert-St Louis Airport flight would often be abbreviated as a ORD to STL flight. Springfield Capital Airport (SPI), Columbia Regional Airport (COU), Belleville Airport (BLV), Quincy Regional Airport (UIN) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Chicago to St. Charles that include extra baggage allowance?

    The amount of baggage you can bring on your Chicago to St. Charles flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Chicago to St. Charles with specific airlines?

    Yes, Cheapflights allows you to browse and filter Chicago to St. Charles flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Chicago to St. Charles that include hotel bookings?

    Yes. In addition to deals on Chicago to St. Charles flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to St. Charles?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to St. Charles.

  • Can I find deals for business class flights from Chicago to St. Charles?

    Yes. Cheapflights offers flight deals from Chicago to St. Charles by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Chicago to St. Charles that allow pets onboard?

    Many airlines flying from Chicago to St. Charles offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Chicago to St. Charles?

    Yes, you can often find last-minute deals on Chicago to St. Charles flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Chicago to St. Charles flight deals updated?

    The Chicago to St. Charles flight deals you see on this page were last updated on 6/11.

  • What are the most popular airlines that fly from Chicago to St. Charles?

  • What is the cheapest month to book a flight from Chicago to St. Charles?

    Currently, September is the cheapest month in which you can book a flight from Chicago to St. Charles (average of $318). Flying from Chicago to St. Charles in July is currently the most expensive (average of $362). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from Chicago to St. Charles

Discover the top 3 airlines that operate flights from Chicago to St. Charles. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 11, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$98Average$340FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$130Average$231FlexibilityNo cancel feeOn-time69%
Southern / MokuleleCheapest$144Average$181FlexibilityNo cancel feeOn-timeN/A

Search flights from Chicago to St. Charles by cabin class

Find flights from Chicago to St. Charles, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Chicago to St. Charles

Find hourly flight availability from Chicago to St. Charles. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 11, 2024.
1%of flight departuresEarly morningMidnight to 6 am
32%of flight departuresMorning6 am to noon
28%of flight departuresAfternoonNoon to 6 pm
39%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Chicago to St. Charles

Explore weekly flight availability from Chicago to St. Charles. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 11, 2024.
Sunday49daily flights
Monday54daily flights
Tuesday46daily flights
Wednesday48daily flights
Thursday52daily flights
Friday54daily flights
Saturday36daily flights
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