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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 3/9. 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
7:00 am - 11:11 am
BZN
-
ORD
3h 11mnonstop
American Airlines Logo
8:00 pm - 10:29 pm
ORD
-
BZN
3h 29mnonstop
$229American Airlines
Fri, Mar 6 - Sun, Mar 8
American Airlines Logo
1:28 pm - 5:37 pm
BZN
-
ORD
3h 09mnonstop
American Airlines Logo
8:00 pm - 10:29 pm
ORD
-
BZN
3h 29mnonstop
$231American Airlines
Thu, Mar 5 - Sun, Mar 8
United Airlines Logo
2:43 pm - 10:55 pm
BZN
-
ORD
7h 12m
1 stop
United Airlines Logo
9:05 am - 11:29 am
ORD
-
BZN
3h 24mnonstop
$235United Airlines
Thu, Mar 19 - Sun, Apr 12
United Airlines Logo
4:30 pm - 11:52 pm
BZN
-
ORD
6h 22m
1 stop
United Airlines Logo
7:41 pm - 10:12 pm
ORD
-
BZN
3h 31mnonstop
$239United Airlines
Fri, Mar 6 - Sun, Mar 8
United Airlines Logo
8:11 am - 12:25 pm
BZN
-
ORD
3h 14mnonstop
United Airlines Logo
4:20 pm - 6:59 pm
ORD
-
BZN
3h 39mnonstop
$241United Airlines
Tue, Feb 24 - Sat, Feb 28
United Airlines Logo
2:40 pm - 10:54 pm
BZN
-
ORD
7h 14m
1 stop
United Airlines Logo
7:00 am - 1:34 pm
ORD
-
BZN
7h 34m
1 stop
$244United Airlines
Thu, Apr 16 - Sun, Apr 19
Delta Logo
3:05 pm - 11:52 pm
BZN
-
ORD
7h 47m
1 stop
Delta Logo
5:30 am - 11:24 am
ORD
-
BZN
6h 54m
1 stop
$249Delta
Thu, Mar 5 - Sun, Mar 8
Delta Logo
5:35 am - 11:52 am
BIL
-
ORD
5h 17m
1 stop
Delta Logo
5:43 pm - 11:03 pm
ORD
-
BIL
6h 20m
1 stop
$249Delta
Sat, May 9 - Wed, May 13
Alaska Airlines Logo
3:32 pm - 1:11 pm
BIL
-
ORD
20h 39m
1 stop
Alaska Airlines Logo
2:07 pm - 1:25 pm
ORD
-
BIL
24h 18m
1 stop
$287Alaska Airlines
Mon, Mar 9 - Tue, Mar 17
Alaska Airlines Logo
4:13 pm - 11:59 pm
MSO
-
ORD
6h 46m
1 stop
Alaska Airlines Logo
6:20 am - 3:23 pm
ORD
-
MSO
10h 03m
1 stop
$303Alaska Airlines
Thu, Jun 11 - Mon, Jun 15

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

Our best American Airlines deals on Montana to Chicago O'Hare Intl Airport flight tickets
American Airlines
Mar 6
BZN7:00 amBozeman Gallatin Field
3h 11m
ORD11:11 amChicago O'Hare Intl
Mar 8
ORD8:00 pmChicago O'Hare Intl
3h 29m
BZN10:29 pmBozeman Gallatin Field
$229
American Airlines
Mar 5
BZN1:28 pmBozeman Gallatin Field
3h 09m
ORD5:37 pmChicago O'Hare Intl
Mar 8
ORD8:00 pmChicago O'Hare Intl
3h 29m
BZN10:29 pmBozeman Gallatin Field
$231
American Airlines
Feb 27
BZN3:36 pmBozeman Gallatin Field
8h 19m
1 stop
ORD12:55 amChicago O'Hare Intl
Mar 2
ORD10:09 amChicago O'Hare Intl
3h 29m
BZN12:38 pmBozeman Gallatin Field
$264

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

Our best United Airlines deals on Montana to Chicago O'Hare Intl Airport flight tickets
United Airlines
Mar 19
BZN2:43 pmBozeman Gallatin Field
7h 12m
1 stop
ORD10:55 pmChicago O'Hare Intl
Apr 12
ORD9:05 amChicago O'Hare Intl
3h 24m
BZN11:29 amBozeman Gallatin Field
$235
United Airlines
Mar 6
BZN4:30 pmBozeman Gallatin Field
6h 22m
1 stop
ORD11:52 pmChicago O'Hare Intl
Mar 8
ORD7:41 pmChicago O'Hare Intl
3h 31m
BZN10:12 pmBozeman Gallatin Field
$239
United Airlines
Feb 24
BZN8:11 amBozeman Gallatin Field
3h 14m
ORD12:25 pmChicago O'Hare Intl
Feb 28
ORD4:20 pmChicago O'Hare Intl
3h 39m
BZN6:59 pmBozeman Gallatin Field
$241

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 February 10, 2026.
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

Fri 3/6

7:00 am-11:11 am

Nonstop3h 11m

Chicago O'Hare Intl

Sun 3/8

8:00 pm-10:29 pm

Nonstop3h 29m

$229

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 3/5

1:28 pm-5:37 pm

Nonstop3h 09m

Chicago O'Hare Intl

Sun 3/8

8:00 pm-10:29 pm

Nonstop3h 29m

$231

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 3/19

2:43 pm-10:55 pm

1 stop7h 12m

Chicago O'Hare Intl

Sun 4/12

9:05 am-11:29 am

Nonstop3h 24m

$235

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Fri 3/6

4:30 pm-11:52 pm

1 stop6h 22m

Chicago O'Hare Intl

Sun 3/8

7:41 pm-10:12 pm

Nonstop3h 31m

$239

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Tue 2/24

8:11 am-12:25 pm

Nonstop3h 14m

Chicago O'Hare Intl

Sat 2/28

4:20 pm-6:59 pm

Nonstop3h 39m

$241

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 4/16

2:40 pm-10:54 pm

1 stop7h 14m

Chicago O'Hare Intl

Sun 4/19

7:00 am-1:34 pm

1 stop7h 34m

$244

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 3/5

3:05 pm-11:52 pm

1 stop7h 47m

Chicago O'Hare Intl

Sun 3/8

5:30 am-11:24 am

1 stop6h 54m

$249

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Sat 5/9

5:35 am-11:52 am

1 stop5h 17m

Chicago O'Hare Intl

Wed 5/13

5:43 pm-11:03 pm

1 stop6h 20m

$249

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Mon 3/9

3:32 pm-1:11 pm

1 stop20h 39m

Chicago O'Hare Intl

Tue 3/17

2:07 pm-1:25 pm

1 stop24h 18m

$287

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Thu 6/11

4:13 pm-11:59 pm

1 stop6h 46m

Chicago O'Hare Intl

Mon 6/15

6:20 am-3:23 pm

1 stop10h 03m

$303

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 $430. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday 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 $607.

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 $484. 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 $360 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 $202 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

$200

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 $200. The best round-trip flight deal from Montana to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $353.
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
DeltaPriceFrom $166Free CancellationRating
7.9
8,178 reviews
Search Delta flights
American AirlinesPriceFrom $191Free CancellationRating
7.2
11,259 reviews
Search American Airlines flights
United AirlinesPriceFrom $229Free CancellationRating
7.4
9,267 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $349Free CancellationRating
8.0
11,871 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
Schaumburg
South Haven
Rockford
Merrillville
Gurnee
Naperville
Rosemont
New Buffalo
Kenosha
Oak Brook
Joliet
Orland Park
Racine
Hammond
Janesville
Tinley Park
Elgin
Aurora
South Holland

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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