How does KAYAK find such low prices on flights from Illinois to Great Falls?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Great Falls. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Great Falls?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Great Falls from Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Illinois to Great Falls?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Great Falls with an airline and back to Illinois with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Great Falls?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Great Falls from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$129 CHEAP FLIGHTS from Illinois to Great Falls

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Cheap Flights from Illinois to Great Falls

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Great Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Illinois to Great Falls

Sat, Sep 13 - Tue, Sep 16

8:00 am - 3:49 pmORD-GTF

8h 49m1 stop

4:29 pm - 7:03 amGTF-ORD

13h 34m1 stop

$240Alaska Airlines

Find Deal

Tue, Aug 26 - Thu, Sep 4

7:15 am - 5:26 pmORD-GTF

11h 11m2 stops

5:45 am - 11:58 amGTF-ORD

5h 13m1 stop

$261Delta

Find Deal

Tue, Aug 26 - Thu, Sep 4

3:50 pm - 8:34 pmORD-GTF

5h 44m1 stop

5:45 am - 11:58 amGTF-ORD

5h 13m1 stop

$317Delta

Find Deal

Sat, Oct 25 - Wed, Oct 29

5:30 pm - 11:06 pmSTL-GTF

6h 36m1 stop

6:09 pm - 12:24 amGTF-STL

5h 15m1 stop

$320Delta

Find Deal

Sat, Aug 30 - Wed, Sep 3

4:10 pm - 9:28 pmORD-GTF

6h 18m1 stop

2:35 pm - 11:59 pmGTF-ORD

8h 24m1 stop

$321United Airlines

Find Deal

Sat, Aug 30 - Wed, Sep 3

2:00 pm - 10:45 pmORD-GTF

9h 45m2 stops

11:43 am - 9:35 pmGTF-ORD

8h 52m2 stops

$322Delta

Find Deal

Sat, Oct 25 - Wed, Oct 29

7:00 am - 12:28 pmSTL-GTF

6h 28m1 stop

1:08 pm - 11:01 pmGTF-STL

8h 53m2 stops

$330Delta

Find Deal

Sat, Oct 25 - Wed, Oct 29

6:00 am - 12:28 pmSTL-GTF

7h 28m2 stops

1:08 pm - 11:01 pmGTF-STL

8h 53m2 stops

$335Delta

Find Deal

Sun, Aug 17 - Thu, Aug 21

7:10 am - 1:36 pmORD-GTF

7h 26m1 stop

2:35 pm - 11:58 pmGTF-ORD

8h 23m1 stop

$338United Airlines

Find Deal

Sat, Aug 30 - Thu, Sep 4

10:49 am - 9:28 pmPIA-GTF

11h 39m2 stops

2:35 pm - 9:12 pmGTF-PIA

5h 37m1 stop

$379United Airlines

Find Deal

Useful Info

Low season	March
High season	July
Cheapest flight	$129

Best time to beat the crowds with an average 17% drop in price.

Most popular time to fly with an average 5% increase in price.

Flight from Chicago O'Hare Airport to Great Falls

How does KAYAK find such low prices on flights from Illinois to Great Falls?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Great Falls.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Great Falls?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Great Falls from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Great Falls?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Great Falls with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Great Falls?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Great Falls from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Shelby

Everything you need to know for your flight to Great Falls

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

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Return flight deals

Information on the airport you'll fly into in Great Falls

Great Falls (GTF)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

GTF

$129 Find Cheap Flights from Illinois to Great Falls

KAYAK searches hundreds of travel sites at once for deals on flights to Great Falls

Cheap Flights from Illinois to Great Falls

Recent round-trip flight deals from Illinois to Great Falls

Recent one-way flight deals from Illinois to Great Falls

Good to know

FAQs for booking flights from Illinois to Great Falls

How does KAYAK find such low prices on flights from Illinois to Great Falls?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Great Falls.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Great Falls?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Great Falls from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Great Falls?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Great Falls with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Great Falls?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Great Falls from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Great Falls?

Everything you need to know for your flight to Great Falls

Information on the airport you'll fly into in Great Falls

Cabin class types available on flights to Illinois

Complete your trip to Great Falls with a hotel stay or car rental

Find direct flights for Great Falls

Flights to other popular destinations

Flights from domestic origins to Great Falls

Choose which airport to fly into in Great Falls

Find deals for your return flight