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>

$134 CHEAP FLIGHTS from Illinois to Great Falls

GTF

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

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$244

Delta

Wed 4/1Wed 4/8

ORD - GTF • 1 stop

Cheapest one-way

$134

Hawaiian Airlines

Sun 3/1

STL - GTF • 1 stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Great Falls!

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

Wed, Apr 1 - Wed, Apr 8

7:20 am - 12:24 pm

ORD

GTF

6h 04m

1 stop

1:05 pm - 9:34 pm

GTF

ORD

7h 29m

1 stop

$244Delta

Wed, Apr 1 - Wed, Apr 8

1:57 pm - 10:30 pm

ORD

GTF

9h 33m

2 stops

5:30 am - 12:18 pm

GTF

ORD

5h 48m

1 stop

$250Delta

Wed, Mar 11 - Wed, Mar 18

7:15 am - 12:24 pm

STL

GTF

6h 09m

1 stop

6:22 pm - 12:21 am

GTF

STL

4h 59m

1 stop

$278Delta

Tue, Apr 28 - Sat, May 2

4:30 pm - 9:17 pm

STL

GTF

5h 47m

1 stop

6:15 am - 2:28 pm

GTF

STL

7h 13m

1 stop

$303United Airlines

Tue, Apr 28 - Sat, May 2

9:10 am - 9:17 pm

STL

GTF

13h 07m

2 stops

6:15 am - 2:28 pm

GTF

STL

7h 13m

1 stop

$309United Airlines

Wed, Apr 1 - Wed, Apr 8

1:57 pm - 10:30 pm

ORD

GTF

9h 33m

2 stops

6:22 pm - 8:30 am

GTF

ORD

13h 08m

2 stops

$317Delta

Fri, May 29 - Tue, Jun 2

7:45 pm - 6:12 pm

ORD

GTF

23h 27m

1 stop

6:52 pm - 6:40 am

GTF

ORD

10h 48m

1 stop

$323Alaska Airlines

Fri, Jun 19 - Tue, Jun 23

2:33 pm - 9:19 pm

ORD

GTF

7h 46m

1 stop

2:29 pm - 10:44 pm

GTF

ORD

7h 15m

1 stop

$335United Airlines

Fri, Feb 27 - Sun, Mar 1

2:47 pm - 5:48 pm

STL

GTF

28h 01m

1 stop

4:57 pm - 8:55 am

GTF

STL

14h 58m

2 stops

$419Alaska Airlines

Wed, Feb 11 - Sun, Feb 15

3:35 pm - 4:17 pm

ORD

GTF

25h 42m

1 stop

4:57 pm - 12:01 pm

GTF

ORD

18h 04m

1 stop

$438Alaska Airlines

Useful Info

Low season	March
High season	June
Cheapest flight	$134

Best time to beat the crowds with an average 18% drop in price.

Most popular time to fly and prices are also 12% lower on average.

Flight from St. Louis 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

Other airports

Return flight deals

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

Great Falls (GTF)

GTF

$134 Find Cheap Flights from Illinois to Great Falls

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

Everything you should know

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

Recent last minute 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