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Cheap flights from Montana to Chicago from $91

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 9/6. 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

American Airlines Logo
4:40 pm - 8:49 pmBZN-ORD
3h 09mnonstop
American Airlines Logo
1:36 pm - 3:50 pmORD-BZN
3h 14mnonstop
$201American Airlines
Find Deal
Wed, Aug 20 - Fri, Aug 22
American Airlines Logo
4:54 pm - 9:03 pmBZN-ORD
3h 09mnonstop
American Airlines Logo
10:25 am - 12:39 pmORD-BZN
3h 14mnonstop
$205American Airlines
Find Deal
Thu, Aug 21 - Sun, Aug 24
Hawaiian Airlines Logo
3:08 pm - 12:03 amBZN-ORD
7h 55m1 stop
Hawaiian Airlines Logo
8:00 am - 2:14 pmORD-BZN
7h 14m1 stop
$207Hawaiian Airlines
Find Deal
Tue, Sep 16 - Tue, Sep 23
Southwest Logo
2:25 pm - 11:40 pmBZN-ORD
8h 15m1 stop
Southwest Logo
6:55 pm - 11:35 pmORD-BZN
5h 40m1 stop
$209Southwest
Find Deal
Thu, Sep 11 - Mon, Sep 15
Hawaiian Airlines Logo
3:02 pm - 12:24 amBZN-ORD
8h 22m1 stop
Hawaiian Airlines Logo
5:00 am - 1:08 pmORD-BZN
9h 08m1 stop
$219Hawaiian Airlines
Find Deal
Fri, Oct 31 - Sun, Nov 2
United Airlines Logo
12:45 pm - 4:44 pmBZN-ORD
2h 59mnonstop
United Airlines Logo
9:15 am - 11:43 amORD-BZN
3h 28mnonstop
$223United Airlines
Find Deal
Sat, Nov 1 - Mon, Nov 3
United Airlines Logo
12:45 pm - 4:44 pmBZN-ORD
2h 59mnonstop
United Airlines Logo
9:15 am - 11:43 amORD-BZN
3h 28mnonstop
$233United Airlines
Find Deal
Fri, Oct 31 - Sun, Nov 2
Delta Logo
6:05 am - 12:04 pmBZN-ORD
4h 59m1 stop
Delta Logo
7:20 pm - 11:59 pmORD-BZN
5h 39m1 stop
$237Delta
Find Deal
Wed, Aug 20 - Fri, Aug 22
Delta Logo
7:35 am - 5:30 pmBZN-ORD
8h 55m2 stops
Delta Logo
8:25 am - 2:27 pmORD-BZN
7h 02m1 stop
$242Delta
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Tue, Aug 26 - Wed, Aug 27
Southwest Logo
4:00 pm - 11:05 pmBZN-ORD
6h 05m1 stop
Southwest Logo
7:15 am - 2:50 pmORD-BZN
8h 35m1 stop
$269Southwest
Find Deal
Thu, Oct 30 - Sun, Nov 2

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
Oct 30
BZN3:02 pmBozeman Gallatin Field
8h 22m
1 stop
ORD12:24 amChicago O'Hare Intl
Nov 2
ORD5:00 amChicago O'Hare Intl
9h 08m
1 stop
BZN1:08 pmBozeman Gallatin Field
$245
Find similar
Alaska Airlines
Sep 12
MSO6:40 pmMissoula Johnson-Bell Field
28h 24m
2 stops
ORD12:04 amChicago O'Hare Intl
Sep 14
ORD8:00 amChicago O'Hare Intl
8h 18m
1 stop
MSO3:18 pmMissoula Johnson-Bell Field
$306
Find similar
Alaska Airlines
Oct 24
MSO6:40 pmMissoula Johnson-Bell Field
28h 26m
1 stop
ORD12:06 amChicago O'Hare Intl
Oct 26
ORD6:00 amChicago O'Hare Intl
7h 19m
1 stop
MSO12:19 pmMissoula Johnson-Bell Field
$309
Find similar

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
Nov 1
BZN12:45 pmBozeman Gallatin Field
2h 59m
ORD4:44 pmChicago O'Hare Intl
Nov 3
ORD9:15 amChicago O'Hare Intl
3h 28m
BZN11:43 amBozeman Gallatin Field
$223
Find similar
United Airlines
Oct 31
BZN12:45 pmBozeman Gallatin Field
2h 59m
ORD4:44 pmChicago O'Hare Intl
Nov 2
ORD9:15 amChicago O'Hare Intl
3h 28m
BZN11:43 amBozeman Gallatin Field
$233
Find similar
United Airlines
Sep 5
BIL12:00 pmBillings Logan Intl
3h 00m
ORD4:00 pmChicago O'Hare Intl
Sep 9
ORD6:21 pmChicago O'Hare Intl
5h 25m
1 stop
BIL10:46 pmBillings Logan Intl
$239
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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 August 4, 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 8/20

4:40 pm-8:49 pm

Nonstop3h 09m

Chicago O'Hare Intl

Fri 8/22

1:36 pm-3:50 pm

Nonstop3h 14m

$201

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 8/21

4:54 pm-9:03 pm

Nonstop3h 09m

Chicago O'Hare Intl

Sun 8/24

10:25 am-12:39 pm

Nonstop3h 14m

$205

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Tue 9/16

3:08 pm-12:03 am

1 stop7h 55m

Chicago O'Hare Intl

Tue 9/23

8:00 am-2:14 pm

1 stop7h 14m

$207

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 9/11

2:25 pm-11:40 pm

1 stop8h 15m

Chicago O'Hare Intl

Mon 9/15

6:55 pm-11:35 pm

1 stop5h 40m

$209

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Fri 10/31

3:02 pm-12:24 am

1 stop8h 22m

Chicago O'Hare Intl

Sun 11/2

5:00 am-1:08 pm

1 stop9h 08m

$219

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Sat 11/1

12:45 pm-4:44 pm

Nonstop2h 59m

Chicago O'Hare Intl

Mon 11/3

9:15 am-11:43 am

Nonstop3h 28m

$223

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Fri 10/31

12:45 pm-4:44 pm

Nonstop2h 59m

Chicago O'Hare Intl

Sun 11/2

9:15 am-11:43 am

Nonstop3h 28m

$233

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Wed 8/20

6:05 am-12:04 pm

1 stop4h 59m

Chicago O'Hare Intl

Fri 8/22

7:20 pm-11:59 pm

1 stop5h 39m

$237

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Tue 8/26

7:35 am-5:30 pm

2 stops8h 55m

Chicago O'Hare Intl

Wed 8/27

8:25 am-2:27 pm

1 stop7h 02m

$242

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 10/30

4:00 pm-11:05 pm

1 stop6h 05m

Chicago O'Hare Intl

Sun 11/2

7:15 am-2:50 pm

1 stop8h 35m

$269

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 July is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Montana averaging around $341.

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 Wednesday when prices can be found for as low as $489. 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 $708.

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 $398 when looking at flights departing in the afternoon. Try not to purchase tickets in the morning because they tend to be around $582. 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 $408 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.

Can stopping save me money on Montana to Chicago O'Hare Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Montana to Chicago O'Hare Intl Airport.

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

$91

Fastest flight time

2h 50m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Montana in the past 72 hours is $91. The best round-trip flight deal from Montana to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $201.
The fastest flight from Montana to Chicago O'Hare Intl Airport takes 2h 50m
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
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $216Free CancellationRating
8.0
7,987 reviews
Search Delta flights
United AirlinesPriceFrom $239Free CancellationRating
7.4
8,912 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $257Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $388Free CancellationRating
8.0
4,246 reviews
Search Southwest flights

Traveling to a place near Chicago?

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