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St. Charles

$57+ Cheap flights from Chicago (CHI) to St. Charles, MO

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 3/27. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — STL
nov. 26 — dic. 31
mar. 11/26
mar. 12/3
1 adult, Economy
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The best prices from Chicago to St. Charles are usually found in May or March, booked 84 days in advance, depart on a Saturday or Wednesday and return on a Tuesday

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 noviembre 21, 2024.

Popular in

January

Cheapest in

May

Round-trip from

$104
(Gotogate)

One-way from

$60
(Booking.com)
High demand for flights, 18% potential price rise
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Best time to find cheap flights, 13% potential price drop
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From Chicago (CHI) to St. Charles
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One-way flight from Chicago (CHI) to St. Charles
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Find flight deals from Chicago to St. Charles

Cheapest flights from Chicago to St. Charles
Explore the most affordable flight options available from Chicago to St. Charles. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 21, 2024.

This Mytrip deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/129:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
lun. 12/162:00 pmSTL - ORD
1 stop26h 10mSouthern / Mokulele
Deal found 11/19$110
This American Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/103:05 pmORD - STL
Nonstop1h 16mAmerican Airlines
mié. 12/115:45 amSTL - ORD
Nonstop1h 27mAmerican Airlines
Deal found 11/20$137
This Southwest deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/117:25 pmMDW - STL
Nonstop1h 15mSouthwest
jue. 12/126:30 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 11/19$143
This Frontier deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/129:35 amORD - STL
1 stop13h 49mFrontier
dom. 12/155:02 pmSTL - ORD
1 stop16h 52mFrontier
Deal found 11/21$159
This Booking.com deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/1510:58 amMDW - STL
1 stop21h 17mFrontier
mar. 12/173:53 pmSTL - MDW
1 stop18h 02mFrontier
Deal found 11/20$168
This Mytrip deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/167:45 pmORD - STL
2 stops19h 36mMultiple Airlines
vie. 12/2012:15 pmSTL - ORD
1 stop3h 35mMultiple Airlines
Deal found 11/20$178
This Delta deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/102:15 pmMDW - STL
1 stop4h 14mDelta
mié. 12/1111:25 amSTL - MDW
1 stop5h 36mDelta
Deal found 11/20$181
This Delta deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/107:05 amORD - STL
2 stops11h 24mDelta
mié. 12/1110:21 amSTL - ORD
1 stop4h 17mDelta
Deal found 11/20$181
This United Airlines deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/1810:50 amORD - STL
Nonstop1h 29mUnited Airlines
dom. 12/225:00 amSTL - ORD
Nonstop1h 35mUnited Airlines
Deal found 11/21$217
This FlightHub deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/145:00 amORD - STL
1 stop10h 21mSpirit Airlines
sáb. 12/144:26 pmSTL - ORD
1 stop17h 11mSpirit Airlines
Deal found 11/21$296
This Southwest deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/85:45 amORD - STL
2 stops6h 55mSouthwest
lun. 12/911:05 amSTL - ORD
2 stops7h 05mSouthwest
Deal found 11/20$390
This Mytrip deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/202:17 pmMDW - STL
3 stops21h 41mMultiple Airlines
jue. 11/215:21 pmSTL - MDW
2 stops26h 58mMultiple Airlines
Deal found 11/19$2,079

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 2,612,795 searches. Data last updated noviembre 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

lun. 1/6

8:25 am-7:55 pm

1 stop11h 30m

Lambert-St Louis

lun. 1/13

12:15 pm-3:50 pm

1 stop3h 35m

$103

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

mié. 1/1

8:20 pm-7:55 pm

1 stop23h 35m

Lambert-St Louis

sáb. 1/18

5:05 pm-9:52 am

1 stop16h 47m

$129

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

vie. 1/31

3:37 pm-11:31 pm

1 stop7h 54m

Lambert-St Louis

dom. 2/2

5:05 pm-10:28 am

1 stop17h 23m

$138

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

dom. 2/9

8:45 pm-10:09 pm

Nonstop1h 24m

Lambert-St Louis

mié. 2/26

5:45 am-7:06 am

Nonstop1h 21m

$142

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

vie. 12/13

7:25 am-8:45 am

Nonstop1h 20m

Lambert-St Louis

lun. 12/16

6:30 am-7:40 am

Nonstop1h 10m

$148

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

jue. 12/12

9:35 am-11:24 pm

1 stop13h 49m

Lambert-St Louis

dom. 12/15

5:02 pm-9:54 am

1 stop16h 52m

$159

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

lun. 1/6

6:00 am-11:47 am

1 stop5h 47m

Lambert-St Louis

lun. 1/13

6:30 am-1:08 pm

1 stop6h 38m

$176

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

sáb. 1/11

6:15 am-10:54 am

1 stop4h 39m

Lambert-St Louis

sáb. 1/18

6:30 am-12:55 pm

1 stop6h 25m

$176

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

jue. 12/12

8:50 pm-10:13 pm

Nonstop1h 23m

Lambert-St Louis

dom. 12/15

12:15 pm-7:40 am

1 stop19h 25m

$195

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

mar. 1/21

6:15 am-4:55 pm

2 stops10h 40m

Lambert-St Louis

jue. 1/23

3:35 pm-10:20 pm

1 stop6h 45m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Showing 1-10 of 24 results
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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.

Travel insights for flights from Chicago to St. Charles

Get recent, data-driven insights about flights from Chicago to St. Charles including ideal travel times, pricing trends, and more.

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 November 15, 2024.

Booking 84 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.

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 $308). Flying from Chicago to St. Charles in March is currently the most expensive (average of $357). 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.

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

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 noviembre 21, 2024.

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.

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 November 18, 2024.

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. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 noviembre 21, 2024.

The most flights from CHI to CH5 are scheduled on a Thursday (60 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (26 on average).

Rainfall in St. Charles by month

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

In terms of precipitation, rainfall in St. Charles ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Charles when rainfall is around 2.2 in.

Temperature in St. Charles by month

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

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 noviembre 21, 2024.
Read through reviews of airlines operating flights from Chicago to St. Charles, such as Southern / Mokulele, American Airlines and Southwest. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,005 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,005 reviews
Southwest
8.1
Very good
5,005 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,464 reviews
Southwest
8.1
Very good
5,005 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,755 reviews
Southwest
8.1
Very good
5,005 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,172 reviews
Southwest
8.1
Very good
5,005 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

WestJet
7.3
Good
2,811 reviews
Southwest
8.1
Very good
5,005 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.7

Food

7.2

Overall

8.1

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

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.

  • 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 Southern / Mokulele ($60), Frontier ($62), and Southwest ($69).

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

    Consider Republic Airways (94%), Envoy Air (93%) or Japan Airlines (90%) 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 $281 for a flight from Chicago to St. Charles. The cheapest flight overall is $113 while the most popular route, (Chicago O'Hare Intl - Lambert-St Louis) is currently priced at $91.

  • 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.

  • 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 $308). Flying from Chicago to St. Charles in March is currently the most expensive (average of $357). 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 4 airlines flying from Chicago to St. Charles

Discover the top 4 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 2,612,795 searches. Data last updated noviembre 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Southern / MokuleleCheapest$112Average$180FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$115Average$352FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$128Average$308FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$181Average$376FlexibilityNo cancel feeOn-time63%
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