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Find cheap one-way flights from Chicago to Great Falls starting at US$161.

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Chicago to Great Falls?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Chicago to Great Falls

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Alaska Airlines
From US$161
Frontier Airlines
From US$194
United Airlines
From US$223
Southwest Airlines
From US$245
Delta Air Lines
From US$284
American Airlines
From US$298
ANA airlines

Find more flights and airlines

Find cheap flights from Chicago to Great Falls by different airports

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Chicago to Great Falls.

  • Cheapest
    Alaska Airlines
    ORD
    06:00
    10h 6m
    1 transfer
    GTF
    15:06
    O'Hare International Airport - Great Falls International Airport
    Mon, Apr 22Alaska Airlines
    US$161
  • Frontier Airlines
    MDW
    05:30
    16h 46m
    1 transfer
    GTF
    21:16
    Midway International Airport - Great Falls International Airport
    Fri, May 10Frontier Airlines
    US$194
  • Frontier Airlines
    MDW
    05:30
    16h 46m
    1 transfer
    GTF
    21:16
    Midway International Airport - Great Falls International Airport
    Fri, May 10Frontier Airlines
    US$194
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Chicago (CHI) to Great Falls (GTF) the cheapest?

    Airlines adjust prices for flights from Chicago to Great Falls based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Chicago (CHI) to Great Falls (GTF) cost?

    According to Trip.com's data, the lowest price is around $449.
  • What is the transportation method from the main airport to downtown in Great Falls?

    • The distance from Great Falls International Airport to downtown is about 5km. It takes about 20 minutes by taxi.

Chicago to Great Falls Flight Information

Cheapest nonstop flight price

$160

Cheapest round-trip ticket price

$283

Off-season for travel

January

Peak season for travel

September