Cheap flights To St. Charles (CHI) from $45

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Cheap Flights to St. Charles from $45 One Way, $90 Round Trip

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Sat, Aug 22 - Sat, Aug 29
ATL
Hartsfield-Jackson Atlanta Intl.
MDW
Midway Intl.
$90 Roundtrip, found 6 days ago
$90
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sat, Aug 22 from Hartsfield-Jackson Atlanta Intl. to Midway Intl., returning Sat, Aug 29, priced at $90 found 6 days ago
Tue, Aug 25 - Tue, Aug 25
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$90 Roundtrip, found 7 hours ago
$90
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Tue, Aug 25 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Tue, Aug 25, priced at $90 found 7 hours ago
Tue, Jul 28 - Wed, Aug 5
DFW
Dallas-Fort Worth Intl.
MDW
Midway Intl.
$90 Roundtrip, found 6 days ago
$90
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Tue, Jul 28 from Dallas-Fort Worth Intl. to Midway Intl., returning Wed, Aug 5, priced at $90 found 6 days ago
Wed, Oct 21 - Wed, Oct 28
BWI
Baltimore Washington Intl. Thurgood Marshall
ORD
O'Hare Intl.
$92 Roundtrip, found 1 day ago
$92
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Oct 21 from Baltimore Washington Intl. Thurgood Marshall to O'Hare Intl., returning Wed, Oct 28, priced at $92 found 1 day ago
Thu, Oct 29 - Wed, Nov 4
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$96 Roundtrip, found 7 hours ago
$96
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Thu, Oct 29 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Wed, Nov 4, priced at $96 found 7 hours ago
Tue, Aug 18 - Wed, Aug 19
ATL
Hartsfield-Jackson Atlanta Intl.
ORD
O'Hare Intl.
$98 Roundtrip, just found
$98
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Aug 18 from Hartsfield-Jackson Atlanta Intl. to O'Hare Intl., returning Wed, Aug 19, priced at $98 just found
Wed, Aug 26 - Tue, Sep 1
LAX
Los Angeles Intl.
ORD
O'Hare Intl.
$100 Roundtrip, found 1 hour ago
$100
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Wed, Aug 26 from Los Angeles Intl. to O'Hare Intl., returning Tue, Sep 1, priced at $100 found 1 hour ago
Wed, Aug 19 - Tue, Aug 25
EWR
Newark Liberty Intl. Airport
ORD
O'Hare Intl.
$137 Roundtrip, found 11 hours ago
$137
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Aug 19 from Newark Liberty Intl. Airport to O'Hare Intl., returning Tue, Aug 25, priced at $137 found 11 hours ago
Tue, Aug 18 - Wed, Aug 19
ATL
Hartsfield-Jackson Atlanta Intl.
ORD
O'Hare Intl.
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Delta flight, departing Tue, Aug 18 from Hartsfield-Jackson Atlanta Intl. to O'Hare Intl., returning Wed, Aug 19, priced at $157 just found
Tue, Aug 18 - Wed, Aug 19
ATL
Hartsfield-Jackson Atlanta Intl.
MDW
Midway Intl.
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Southwest Airlines flight, departing Tue, Aug 18 from Hartsfield-Jackson Atlanta Intl. to Midway Intl., returning Wed, Aug 19, priced at $157 just found

St. Charles Flight Information

Traveling To
St. Charles
Destination Airport IATA Code
CHI
Number of Airlines Serving
Airlines
Frontier Airlines, United, Delta, Southwest Airlines, American Airlines
Flight Price
$90
Earliest Departing Flight
Latest Departing Flight

Book Your Flight & Hotel Together & Save

St. Charles economy flight packages

Price found within the past 48 hours. Click for updated prices.
Hotel Riu Plaza Chicago
4.0-star property

Hotel Riu Plaza Chicago

Jul 17 - Jul 19

2 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $867, price is now $570 per person
$570
per person
found 1 day ago
Level Chicago ��– Old Town
4.0-star property

Level Chicago – Old Town

Aug 6 - Aug 10

4 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,407, price is now $895 per person
$895
per person
found 9 hours ago
Sable at Navy Pier Chicago, Curio Collection by Hilton
4.0-star property

Sable at Navy Pier Chicago, Curio Collection by Hilton

Jul 16 - Jul 21

5 night stay

Atlanta (ATL) to Chicago (ORD)

Southwest Airlines • Coach

Chicago (ORD) to Atlanta (ATL)

Frontier Airlines • Coach
Save 100% on your flight
Price was $1,594, price is now $1,031 per person
$1,031
per person
found 1 day ago
Don't see what you're looking for?
See all available trips from Atlanta to St. Charles
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St. Charles premium economy flight packages

Price found within the past 48 hours. Click for updated prices.
Hotel Felix River North/Magnificent Mile
4.0-star property

Hotel Felix River North/Magnificent Mile

8.2/10 Very Good! (2,744 reviews)

Jul 27 - Jul 31

4 night stay

Dallas (DFW) to Chicago (ORD)

Frontier Airlines • Roundtrip • PremiumEconomy
Save 100% on your flight
Price was $1,237, price is now $841 per person
$841
per person
found 1 day ago
Best vibe. In the mix!

Reviewed on May 2, 2026

Hotel Riu Plaza Chicago
4.0-star property

Hotel Riu Plaza Chicago

9.4/10 Exceptional! (4,319 reviews)

Jul 16 - Jul 19

3 night stay

Dallas (DFW) to Chicago (ORD)

Frontier Airlines • Roundtrip • PremiumEconomy
Save 100% on your flight
Price was $1,335, price is now $874 per person
$874
per person
found 1 day ago
Nice staff. Clean. Great rooftop bar!! Great location. Great included breakfast buffet! I prefer a comforter rather than a sheet and blanket but still loved it!!

Reviewed on Jun 5, 2026

Level Chicago Fulton Market
4.0-star property

Level Chicago Fulton Market

9.2/10 Wonderful! (491 reviews)

Jul 27 - Jul 31

4 night stay

Dallas (DFW) to Chicago (ORD)

Frontier Airlines • Roundtrip • PremiumEconomy
Save 100% on your flight
Price was $1,588, price is now $1,058 per person
$1,058
per person
found 1 day ago
Don't see what you're looking for?
See all available trips from Dallas to St. Charles
View all trips

St. Charles first class flight packages

Price found within the past 48 hours. Click for updated prices.
Hotel Felix River North/Magnificent Mile
4.0-star property

Hotel Felix River North/Magnificent Mile

8.2/10 Very Good! (2,744 reviews)

Jul 24 - Jul 27

3 night stay

Newark Liberty Intl. Airport (EWR) to Chicago (ORD)

American Airlines • Roundtrip • FirstClass
Price was $1,262, price is now $922 per person
$922
per person
found 1 day ago
Best vibe. In the mix!

Reviewed on May 2, 2026

Hotel Riu Plaza Chicago
4.0-star property

Hotel Riu Plaza Chicago

9.4/10 Exceptional! (4,319 reviews)

Aug 6 - Aug 9

3 night stay

Atlanta (ATL) to Chicago (ORD)

Delta • Roundtrip • FirstClass
Price was $1,311, price is now $967 per person
$967
per person
found 18 hours ago
Nice staff. Clean. Great rooftop bar!! Great location. Great included breakfast buffet! I prefer a comforter rather than a sheet and blanket but still loved it!!

Reviewed on Jun 5, 2026

Sable at Navy Pier Chicago, Curio Collection by Hilton
4.0-star property

Sable at Navy Pier Chicago, Curio Collection by Hilton

9.4/10 Exceptional! (2,519 reviews)

Aug 6 - Aug 9

3 night stay

Atlanta (ATL) to Chicago (ORD)

Delta • Roundtrip • FirstClass
Price was $1,479, price is now $1,150 per person
$1,150
per person
found 18 hours ago
Really nice property, rooms were clean, and staff was extremely friendly

Reviewed on May 5, 2026

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See all available trips from Newark Liberty Intl. Airport to St. Charles
View all trips

St. Charles

Orbitz provides convenient, one-stop shopping for travelers looking for budget flights to St. Charles or any other low fare domestic or international air travel.

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You can find amazing discount fares with Orbitz’s guaranteed low prices or take advantage of last-minute sales and special travel packages. You can also earn points towards your airline frequent flyer programs when you book qualified flights to St. Charles. That means you can rack up money-saving points and miles for future use while saving money now.

We Are Just a Phone Call Away If You Need Us

Booking, changing, or canceling your St. Charles flights is a breeze with Orbitz’s online and mobile tools, but that doesn't mean that we leave you hanging if you want to speak with one of our representatives. If you need help, just contact our Customer Service by email or phone. To enjoy a less stressful trip, be sure to sign up for instant alerts so we can send you any updates or delays relating to your flights to St. Charles to your mobile phone or email.

Frequently asked questions

Which airlines fly to St. Charles?
With 20 airlines offering services to O'Hare Intl. Airport (ORD), a major gateway to St. Charles, the choice is all yours. Grab a fabulous deal among these top international carriers that'll get you to this city:

  • United Airlines - 612 flights to St. Charles per month
  • American Airlines - 339 flights to St. Charles per month
  • Air Canada - 190 flights to St. Charles per month

What is the best airport to fly to in St. Charles?
Keep your eyes open for an amazing flight deal to O'Hare Intl. Airport (ORD). It's the city's main terminal and is situated roughly 25 miles east of the center. Once you've walked out of arrivals, it won't be long before you're soaking up the delights of St. Charles.
How much is a flight to St. Charles?
Fares for return flights dipped as low as $90 this past week to St. Charles, and rose to a high of $157. Some lucky travelers journeying out of Dallas (DFW) managed to snap up one-way flights from just $45.
How to book the cheapest flight to St. Charles?
Landing cheap flights to St. Charles is as simple as booking with Orbitz. But if you want to make sure you're nabbing the best flight deals around, here are a few tips to follow:

  • Departing from or landing at other airports can sometimes save you money. Enter your preferred departure and arrival points. Next, select the 'Nearby airports' function below to see your options.
  • Also, click on the 'Show flexible dates' option to view the airfares on days around your selected departure. It's possible to score cheaper flight deals if your travel plans are flexible.
  • To refine your results, click on 'Show options.' You can search based on airlines, seating class, and nonstop and refundable flights. You can also select whether you want to fly in the morning, afternoon or evening under 'Sort & Filter' to the left.
  • Book your fare as soon as you know your travel dates. While it does happen now and then, tickets rarely fall in price as your date of departure gets closer.
  • Bundle your hotels, flights and car rentals into one convenient package deal. Save your hard-earned cash for things you're really excited about, like discovering every corner of St. Charles.
  • Flying during the busy season often means steep airfares. If possible, plan your trip outside of popular periods, such as Thanksgiving, New Year's Eve and Easter.

How long is a flight to St. Charles?
Your city of origin, which airport you leave from and whether your journey is direct — the flight duration depends on lots of things. But we've listed the average times for some of the most well-known routes to St. Charles:

  • New York, NY (LGA-LaGuardia) to O'Hare Intl. Airport (ORD) - 2 hours and 40 minutes
  • Boston, MA (BOS-Logan Intl.) to O'Hare Intl. Airport (ORD) - 2 hours and 51 minutes
  • Washington, DC (DCA-Ronald Reagan Washington National) to O'Hare Intl. Airport (ORD) - 2 hours and 13 minutes

What is the best time to book a flight to St. Charles?
Pick up a bargain and secure your seats to St. Charles in January. If you've missed this month, fear not. February and August often have low airfares available, too. Make sure you don't sleep on a sale though — cheap flights pop up and vanish in an instant!
What day of the week is the cheapest to book a flight to St. Charles?
In general, Tuesdays, Wednesdays and Saturdays are the cheapest days of the week to book a flight to St. Charles. If you want the best airfares, search across those days and you could land yourself a great flight deal.
What is the cheapest day of the week to fly to St. Charles?
Based on Orbitz data from 2020, Monday is usually the best day for cheap flights to St. Charles. Tuesday also has wallet-friendly airfares, whereas Saturday has the most expensive ticket rates. Although flying out at the weekend may be easier to arrange, you'll have more cash to play with if you take off at the start of the week.
What is the cheapest month to fly to St. Charles?
To secure cheap flights to St. Charles, pack your bags and jet off in August. Orbitz data shows that this is generally the best month to save on your airfare. If you're considering flying to St. Charles during June, it's worth noting that this is the most expensive time of year to travel.
Which airlines allow free cancellation?
Orbitz makes it a cinch to find carriers offering fare flexibility. Simply select "Filter by flexible change policies" when searching for your St. Charles flights and hey presto! We'll show you options that include free cancellation, no change fees and of course, the very best price.
What do I need for the flight to St. Charles?
The key to a comfortable and successful flight is to prepare well. Here are some handy tips to help you get ready for your trip:

  • Whether you print it out beforehand or use an electronic one, you'll need your boarding pass to walk on to the plane. You'll also need some kind of government-issued ID. If you're traveling internationally, make sure your passport is valid.
  • To keep you entertained on your short trip to St. Charles, download some new songs or restock the audiobook library on your smartphone. Food can also be a delicious distraction while in the air, so maybe even bring some light snacks.
  • Even if you're flying when it's sweltering outside, carry a hoodie or sweater on board with you. Airplane cabins can get downright chilly.

How many direct flights are there to St. Charles?
There are 2,332 flights that head straight to St. Charles every month, which means you won't have to deal with tiresome stopovers. Book a fare with United Airlines or American Airlines and then settle back and enjoy the flight. Delta Air Lines, Southwest Airlines, Spirit Airlines and Air Canada also provide nonstop services to St. Charles.
How do I get cheap first-class/business deals to St. Charles?
There are ways of booking business or first-class airfares to St. Charles that won't burn through your savings. Snap up a seat at the front of the plane for less with these handy hints:

  • Being flexible isn't just a yoga thing. Have some room to move around your travel dates so you can pick up more affordable airfares when they pop up.
  • Many low-cost airlines have top-notch business-class seating without the hefty fees.
  • Bid for an upgrade in online auctions or upgrade your seat with points earned through loyalty programs.

How to get into St. Charles from the airport?
Book an O'Hare Intl. Airport (ORD) car rental at O'Hare Intl. Airport (ORD) with one of the two reputable outlets on-site, Thrifty Car Rental or Dollar. Central St. Charles is around 25 miles away to the west of ORD. After filing off the plane, pick up your set of wheels and get there in a flash. Public transportation and taxis are another two ways to travel into the center. Spend some time wandering around St. Charles, then head out further afield with one of our St. Charles car rentals conveniently located downtown.
What is the best time to go to St. Charles?
Anytime is a great time to experience St. Charles, though March, May and November are the most popular months. Like most places in the Northern Hemisphere, summertime starts June 20. If you'd prefer to spend most of your days in a short-sleeved top than a winter coat, this time of the year would be ideal. Expect average daily highs of 80 ºF and nighttime lows around 65 ºF.

More to Explore

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.