Cheap Flights from Great Falls (GTF) to Chicago (ORD)

Flights from Great Falls (GTF) to Chicago (ORD)
Origin airport
Great Falls Intl.
Destination airport
O'Hare Intl.
Distance
1206 mi

Great Falls to Chicago Flights

The cheapest times to fly from Great Falls to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Great Falls to Chicago are during the month of . You can find some of the cheapest flights from Great Falls to Chicago with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Great Falls to Chicago

Sunday is one of the best days to book for cheap flights from Great Falls to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Great Falls to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Great Falls to Chicago in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Great Falls to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Great Falls to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

Is it cheaper to buy a plane ticket from Great Falls Intl. Airport to ORD last minute?
Booking your journey from Great Falls Intl. Airport to O’Hare Airport last minute could save you a tidy sum if you strike it lucky and find an amazing deal. However, tickets usually don’t come down in price closer to the departure date. If you choose to wait, flights could also be booked solid or the best seats gone (that could mean the middle seat!). If you’d prefer to play it safe, book well ahead of the date you want to leave. In fact, Expedia has some of the biggest deals up to a year in advance. If your preferred carrier hasn’t released its fares yet, check back regularly as deals are updated on Expedia constantly.
What airports do you fly into for Chicago from Great Falls?
O’Hare Intl. Airport (ORD), Midway Intl. Airport (MDW) and Lewis University Airport (LOT) are your choices when jetting from Great Falls to Chicago. Roughly 16 mi northwest of the heart of Chicago, O’Hare Intl. Airport (ORD) is the city’s major hub. Take into account things like flight arrival and departure times and the distance to your hotel before choosing an airport. Wrigley Field and Millennium Park are a couple of awesome attractions to put on your to-do list when you get to your destination.
Can I change the date of my flight from GTF to ORD?
It’s a cinch to make changes to your GTF to O’Hare Airport journey yourself. Simply log in to the Expedia Trips portal and select “change flight.” Look around for new flights and book the one that works with your new plans. You’ll get an estimate of any flight change costs. Alternatively, head to our Customer Service portal to connect with our Virtual Agent and quickly get answers to your questions.

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*Available to One Key members.