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Cheap flights from Montana to Chicago from $106

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to Chicago departing on 1/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
1:42 pm - 5:49 pm
BZN
-
ORD
3h 07mnonstop
American Airlines Logo
10:24 am - 12:50 pm
ORD
-
BZN
3h 26mnonstop
$199American Airlines
Wed, Jan 21 - Mon, Jan 26
American Airlines Logo
1:42 pm - 5:49 pm
BZN
-
ORD
3h 07mnonstop
American Airlines Logo
5:05 am - 1:19 pm
ORD
-
BZN
9h 14m1 stop
$209American Airlines
Wed, Jan 21 - Mon, Jan 26
Delta Logo
2:00 pm - 11:56 pm
BZN
-
ORD
8h 56m2 stops
Delta Logo
8:50 am - 12:55 pm
ORD
-
BZN
5h 05m1 stop
$224Delta
Wed, Jan 21 - Mon, Jan 26
Alaska Airlines Logo
12:46 pm - 11:37 pm
BZN
-
ORD
9h 51m1 stop
Alaska Airlines Logo
8:00 am - 2:09 pm
ORD
-
BZN
7h 09m1 stop
$228Alaska Airlines
Wed, Jan 21 - Mon, Jan 26
Delta Logo
2:00 pm - 11:56 pm
BZN
-
ORD
8h 56m2 stops
Delta Logo
10:35 am - 8:06 pm
ORD
-
BZN
10h 31m2 stops
$229Delta
Wed, Jan 21 - Mon, Jan 26
Alaska Airlines Logo
3:03 pm - 11:50 pm
BZN
-
ORD
7h 47m1 stop
Alaska Airlines Logo
2:06 pm - 11:56 pm
ORD
-
BZN
10h 50m2 stops
$236Alaska Airlines
Thu, Jan 29 - Mon, Feb 2
United Airlines Logo
9:14 am - 6:46 pm
BTM
-
ORD
8h 32m1 stop
United Airlines Logo
2:40 pm - 10:26 pm
ORD
-
BTM
8h 46m1 stop
$284United Airlines
Sat, Jan 31 - Sat, Feb 21
Multiple Airlines Logo
9:06 pm - 9:32 pm
FCA
-
ORD
23h 26m1 stop
Multiple Airlines Logo
6:02 pm - 8:16 pm
ORD
-
FCA
27h 14m2 stops
$309Multiple Airlines
Sun, Jan 11 - Sat, Jan 17
Multiple Airlines Logo
9:06 pm - 9:32 pm
FCA
-
ORD
23h 26m1 stop
Multiple Airlines Logo
6:02 pm - 8:16 pm
ORD
-
FCA
27h 14m2 stops
$320Multiple Airlines
Sun, Jan 11 - Sat, Jan 17
United Airlines Logo
6:00 am - 1:24 pm
FCA
-
ORD
6h 24m1 stop
United Airlines Logo
3:59 pm - 9:59 pm
ORD
-
FCA
7h 00m1 stop
$338United Airlines
Tue, Jan 13 - Tue, Jan 13

Alaska Airlines flights from Montana to Chicago O'Hare Intl Airport

Our best Alaska Airlines deals on Montana to Chicago O'Hare Intl Airport flight tickets
Alaska Airlines
Jan 21
BZN12:46 pmBozeman Gallatin Field
9h 51m
1 stop
ORD11:37 pmChicago O'Hare Intl
Jan 26
ORD8:00 amChicago O'Hare Intl
7h 09m
1 stop
BZN2:09 pmBozeman Gallatin Field
$228
Find similar
Alaska Airlines
Jan 29
BZN3:03 pmBozeman Gallatin Field
7h 47m
1 stop
ORD11:50 pmChicago O'Hare Intl
Feb 2
ORD2:06 pmChicago O'Hare Intl
10h 50m
2 stops
BZN11:56 pmBozeman Gallatin Field
$236
Find similar
Alaska Airlines
Jan 13
BZN12:00 pmBozeman Gallatin Field
10h 50m
1 stop
ORD11:50 pmChicago O'Hare Intl
Jan 15
ORD3:35 pmChicago O'Hare Intl
9h 21m
1 stop
BZN11:56 pmBozeman Gallatin Field
$250
Find similar

Delta flights from Montana to Chicago O'Hare Intl Airport

Our best Delta deals on Montana to Chicago O'Hare Intl Airport flight tickets
Delta
Jan 21
BZN2:00 pmBozeman Gallatin Field
8h 56m
2 stops
ORD11:56 pmChicago O'Hare Intl
Jan 26
ORD8:50 amChicago O'Hare Intl
5h 05m
1 stop
BZN12:55 pmBozeman Gallatin Field
$224
Find similar
Delta
Jan 21
BZN2:00 pmBozeman Gallatin Field
8h 56m
2 stops
ORD11:56 pmChicago O'Hare Intl
Jan 26
ORD10:35 amChicago O'Hare Intl
10h 31m
2 stops
BZN8:06 pmBozeman Gallatin Field
$229
Find similar
Delta
Feb 12
BIL5:10 amBillings Logan Intl
6h 09m
1 stop
ORD12:19 pmChicago O'Hare Intl
Feb 16
ORD3:59 pmChicago O'Hare Intl
4h 40m
1 stop
BIL7:39 pmBillings Logan Intl
$249
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Montana to Chicago O'Hare Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 14, 2025.
Use the filters below to find and compare flights from Montana to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Wed 1/21

1:42 pm-5:49 pm

Nonstop3h 07m

Chicago O'Hare Intl

Mon 1/26

10:24 am-12:50 pm

Nonstop3h 26m

$199

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Wed 1/21

1:42 pm-5:49 pm

Nonstop3h 07m

Chicago O'Hare Intl

Mon 1/26

5:05 am-1:19 pm

1 stop9h 14m

$209

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Wed 1/21

2:00 pm-11:56 pm

2 stops8h 56m

Chicago O'Hare Intl

Mon 1/26

8:50 am-12:55 pm

1 stop5h 05m

$224

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Wed 1/21

12:46 pm-11:37 pm

1 stop9h 51m

Chicago O'Hare Intl

Mon 1/26

8:00 am-2:09 pm

1 stop7h 09m

$228

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Wed 1/21

2:00 pm-11:56 pm

2 stops8h 56m

Chicago O'Hare Intl

Mon 1/26

10:35 am-8:06 pm

2 stops10h 31m

$229

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 1/29

3:03 pm-11:50 pm

1 stop7h 47m

Chicago O'Hare Intl

Mon 2/2

2:06 pm-11:56 pm

2 stops10h 50m

$236

ButteChicago

BTM - ORD

BTMORD

Butte Silver Bow Co

Sat 1/31

9:14 am-6:46 pm

1 stop8h 32m

Chicago O'Hare Intl

Sat 2/21

2:40 pm-10:26 pm

1 stop8h 46m

$284

KalispellChicago

FCA - ORD

FCAORD

Kalispell Glacier Park

Sun 1/11

9:06 pm-9:32 pm

1 stop23h 26m

Chicago O'Hare Intl

Sat 1/17

6:02 pm-8:16 pm

2 stops27h 14m

$309

KalispellChicago

FCA - ORD

FCAORD

Kalispell Glacier Park

Sun 1/11

9:06 pm-9:32 pm

1 stop23h 26m

Chicago O'Hare Intl

Sat 1/17

6:02 pm-8:16 pm

2 stops27h 14m

$320

KalispellChicago

FCA - ORD

FCAORD

Kalispell Glacier Park

Tue 1/13

6:00 am-1:24 pm

1 stop6h 24m

Chicago O'Hare Intl

Tue 1/13

3:59 pm-9:59 pm

1 stop7h 00m

$338

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chicago from

How to get the cheapest flight ticket from Montana to Chicago O'Hare Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

The month of October is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Montana averaging around $271.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Thursday when prices can be found for as low as $454. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Montana because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $633.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from Montana in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $373 when looking at flights departing in the afternoon. Try not to purchase tickets in the morning because they tend to be around $519. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Montana to Chicago O'Hare Intl flight route?

Fly from Bozeman Gallatin Field to Chicago O'Hare Intl for the best Montana - Chicago O'Hare Intl flight prices

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Montana when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $378 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Montana for as low as $247 on momondo.

What cabin class options are available on Montana to Chicago O'Hare Intl flights?

There are 4 cabin classes available to choose from on Montana to Chicago O'Hare Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Montana to Chicago O'Hare Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montana to Chicago O'Hare Intl Airport

Best Price Found

$151

Fastest flight time

3h 00m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Montana in the past 72 hours is $151. The best round-trip flight deal from Montana to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $316.
The fastest flight from Montana to Chicago O'Hare Intl Airport takes 3h 00m
Direct flights go from Montana to Chicago O'Hare Intl Airport every day.
Search flight deals

  • When did momondo last update prices for flights from Montana to Chicago O'Hare Intl Airport?

    Prices for flights from Montana to Chicago O'Hare Intl Airport are updated daily.

  • How many operators does momondo search for flights from Montana to Chicago O'Hare Intl Airport?

  • How old do you have to be to fly from Montana to Chicago O'Hare Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montana to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Montana to Chicago O'Hare Intl Airport?

Best airlines flying from Montana to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Montana to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $191Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
United AirlinesPriceFrom $229Free CancellationRating
7.4
9,094 reviews
Search United Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Alaska AirlinesPriceFrom $349Free CancellationRating
8.0
11,448 reviews
Search Alaska Airlines flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
South Haven
Schaumburg
Rockford
Merrillville
Gurnee
Naperville
Rosemont
Kenosha
New Buffalo
Joliet
Oak Brook
Orland Park
Racine
Hammond
Tinley Park
Janesville
Aurora
Elgin
Benton Harbor

Why use momondo?

Why should I use momondo to find a flight deal from Montana to Chicago?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Chicago from Montana.

Can I find flights from Montana to Chicago with flexible booking policies on momondo?

All flight searches from Montana to Chicago on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Montana to Chicago?

Once all potential Montana to Chicago flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Montana to Chicago right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Montana to Chicago flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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