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.

$184 CHEAP FLIGHTS from Illinois to Great Falls

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Flight Deals

Cheap Flights from Illinois to Great Falls

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from Illinois to Great Falls

Sat, Jan 30 - Wed, Feb 3

8:00 am - 3:28 pmORD Chicago O'Hare Intl-GTF Great Falls

8h 28m1 stop Seattle/Tacoma Intl

4:08 pm - 11:59 pmGTF Great Falls-ORD Chicago O'Hare Intl

6h 51m1 stop Seattle/Tacoma Intl

$368Alaska Airlines

Thu, Dec 10 - Sun, Dec 13

2:35 pm - 9:13 pmORD Chicago O'Hare Intl-GTF Great Falls

7h 38m1 stop Denver Intl

6:30 am - 1:15 pmGTF Great Falls-ORD Chicago O'Hare Intl

5h 45m1 stop Denver Intl

$368United Airlines

Fri, Jan 15 - Tue, Jan 19

6:57 pm - 3:28 pmORD Chicago O'Hare Intl-GTF Great Falls

21h 31m1 stop Seattle/Tacoma Intl

4:08 pm - 11:59 pmGTF Great Falls-ORD Chicago O'Hare Intl

6h 51m1 stop Seattle/Tacoma Intl

$368Alaska Airlines

Thu, Dec 10 - Sun, Dec 13

2:04 pm - 10:29 pmORD Chicago O'Hare Intl-GTF Great Falls

9h 25m1 stop Salt Lake City

5:35 am - 7:09 pmGTF Great Falls-ORD Chicago O'Hare Intl

12h 34m2 stops Salt Lake City Atlanta Hartsfield-Jackson

$374Delta

Fri, Nov 13 - Sun, Nov 15

7:30 am - 12:41 pmORD Chicago O'Hare Intl-GTF Great Falls

6h 11m1 stop Salt Lake City

1:21 pm - 9:47 pmGTF Great Falls-ORD Chicago O'Hare Intl

7h 26m1 stop Salt Lake City

$403Delta

Fri, Nov 13 - Sun, Nov 15

7:30 am - 12:41 pmORD Chicago O'Hare Intl-GTF Great Falls

6h 11m1 stop Salt Lake City

1:21 pm - 9:47 pmGTF Great Falls-ORD Chicago O'Hare Intl

7h 26m1 stop Salt Lake City

$403Delta

Fri, Nov 13 - Sun, Nov 15

9:51 am - 10:30 pmORD Chicago O'Hare Intl-GTF Great Falls

13h 39m2 stops Atlanta Hartsfield-Jackson Salt Lake City

1:21 pm - 9:47 pmGTF Great Falls-ORD Chicago O'Hare Intl

7h 26m1 stop Salt Lake City

$409Delta

Fri, Nov 13 - Sun, Nov 15

9:51 am - 10:30 pmORD Chicago O'Hare Intl-GTF Great Falls

13h 39m2 stops Atlanta Hartsfield-Jackson Salt Lake City

1:21 pm - 9:47 pmGTF Great Falls-ORD Chicago O'Hare Intl

7h 26m1 stop Salt Lake City

$409Delta

Wed, Dec 23 - Thu, Dec 31

8:00 pm - 10:50 amORD Chicago O'Hare Intl-GTF Great Falls

15h 50m1 stop Phoenix Sky Harbor Intl

11:40 am - 6:55 pmGTF Great Falls-ORD Chicago O'Hare Intl

30h 15m1 stop Phoenix-Mesa Gateway

$413Multiple Airlines

Wed, Nov 11 - Sun, Nov 15

7:00 am - 1:49 pmORD Chicago O'Hare Intl-GTF Great Falls

7h 49m1 stop Denver Intl

2:45 pm - 9:30 pmGTF Great Falls-ORD Chicago O'Hare Intl

5h 45m1 stop Denver Intl

$438United Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$184

Best time to beat the crowds but there is an average 51% increase in price.

Most popular time to fly and prices are also 19% lower on average.

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.