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Cheap flights from Montana to Chicago from $107

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 4/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Montana to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
9:55 am - 10:55 pm
BZN
-
ORD
12h 00m
1 stop
Southwest Logo
4:50 pm - 12:15 am
ORD
-
BZN
8h 25m
1 stop
$209Southwest
Tue, Apr 21 - Tue, Apr 28
Southwest Logo
11:20 am - 11:55 pm
BZN
-
ORD
11h 35m
2 stops
Southwest Logo
11:55 am - 9:55 pm
ORD
-
BZN
11h 00m
2 stops
$214Southwest
Tue, Apr 21 - Tue, Apr 28
Delta Logo
5:30 am - 11:51 am
BZN
-
ORD
5h 21m
1 stop
Delta Logo
8:50 am - 12:34 pm
ORD
-
BZN
4h 44m
1 stop
$234Delta
Tue, Apr 21 - Tue, Apr 28
American Airlines Logo
6:00 am - 9:51 am
BIL
-
ORD
2h 51mnonstop
American Airlines Logo
8:20 pm - 10:22 pm
ORD
-
BIL
3h 02mnonstop
$251American Airlines
Tue, Sep 1 - Sat, Sep 19
United Airlines Logo
11:43 am - 3:48 pm
BIL
-
ORD
3h 05mnonstop
United Airlines Logo
2:33 pm - 9:00 pm
ORD
-
BIL
7h 27m
1 stop
$261United Airlines
Tue, Sep 1 - Sat, Sep 19
Delta Logo
5:30 am - 11:52 am
BIL
-
ORD
5h 22m
1 stop
Delta Logo
5:41 pm - 11:14 pm
ORD
-
BIL
6h 33m
1 stop
$271Delta
Tue, Jun 2 - Sat, Jun 6
United Airlines Logo
2:25 pm - 9:12 pm
BIL
-
ORD
5h 47m
1 stop
United Airlines Logo
5:00 am - 9:41 am
ORD
-
BIL
5h 41m
1 stop
$290United Airlines
Wed, Sep 16 - Sun, Sep 20
American Airlines Logo
1:25 pm - 6:04 pm
FCA
-
ORD
3h 39mnonstop
American Airlines Logo
9:45 am - 12:35 pm
ORD
-
FCA
3h 50mnonstop
$309American Airlines
Fri, May 29 - Tue, Jun 2
Multiple Airlines Logo
9:26 pm - 9:40 am
GTF
-
ORD
35h 14m
2 stops
Multiple Airlines Logo
7:50 am - 8:41 pm
ORD
-
GTF
13h 51m
1 stop
$313Multiple Airlines
Sun, Apr 19 - Sun, Apr 26
Multiple Airlines Logo
1:33 pm - 8:37 pm
FCA
-
ORD
30h 04m
2 stops
Multiple Airlines Logo
8:52 pm - 9:46 am
ORD
-
FCA
13h 54m
1 stop
$336Multiple Airlines
Fri, May 15 - Sun, May 24

Southwest flights from Montana to Chicago O'Hare Intl Airport

Our best Southwest deals on Montana to Chicago O'Hare Intl Airport flight tickets
Southwest
Apr 21
BZN9:55 amBozeman Gallatin Field
12h 00m
1 stop
ORD10:55 pmChicago O'Hare Intl
Apr 28
ORD4:50 pmChicago O'Hare Intl
8h 25m
1 stop
BZN12:15 amBozeman Gallatin Field
$209
Southwest
Apr 21
BZN11:20 amBozeman Gallatin Field
11h 35m
2 stops
ORD11:55 pmChicago O'Hare Intl
Apr 28
ORD11:55 amChicago O'Hare Intl
11h 00m
2 stops
BZN9:55 pmBozeman Gallatin Field
$214
Southwest
May 11
BZN6:15 amBozeman Gallatin Field
6h 40m
1 stop
ORD1:55 pmChicago O'Hare Intl
May 12
ORD4:50 pmChicago O'Hare Intl
8h 25m
1 stop
BZN12:15 amBozeman Gallatin Field
$218

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
May 29
FCA1:25 pmKalispell Glacier Park
3h 39m
ORD6:04 pmChicago O'Hare Intl
Jun 2
ORD9:45 amChicago O'Hare Intl
3h 50m
FCA12:35 pmKalispell Glacier Park
$309
American Airlines
May 29
FCA1:25 pmKalispell Glacier Park
3h 39m
ORD6:04 pmChicago O'Hare Intl
Jun 2
ORD7:02 amChicago O'Hare Intl
8h 58m
1 stop
FCA3:00 pmKalispell Glacier Park
$319
American Airlines
May 29
FCA12:25 pmKalispell Glacier Park
7h 47m
1 stop
ORD9:12 pmChicago O'Hare Intl
Jun 2
ORD8:19 amChicago O'Hare Intl
7h 41m
1 stop
FCA3:00 pmKalispell Glacier Park
$329

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 March 27, 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

Cheapest round-trip

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Tue 4/21

9:55 am-10:55 pm

1 stop12h 00m

Chicago O'Hare Intl

Tue 4/28

4:50 pm-12:15 am

1 stop8h 25m

$209

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Tue 4/21

11:20 am-11:55 pm

2 stops11h 35m

Chicago O'Hare Intl

Tue 4/28

11:55 am-9:55 pm

2 stops11h 00m

$214

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Tue 4/21

5:30 am-11:51 am

1 stop5h 21m

Chicago O'Hare Intl

Tue 4/28

8:50 am-12:34 pm

1 stop4h 44m

$234
Quickest round-trip

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Tue 9/1

6:00 am-9:51 am

Nonstop2h 51m

Chicago O'Hare Intl

Sat 9/19

8:20 pm-10:22 pm

Nonstop3h 02m

$251

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Tue 9/1

11:43 am-3:48 pm

Nonstop3h 05m

Chicago O'Hare Intl

Sat 9/19

2:33 pm-9:00 pm

1 stop7h 27m

$261

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Tue 6/2

5:30 am-11:52 am

1 stop5h 22m

Chicago O'Hare Intl

Sat 6/6

5:41 pm-11:14 pm

1 stop6h 33m

$271

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Wed 9/16

2:25 pm-9:12 pm

1 stop5h 47m

Chicago O'Hare Intl

Sun 9/20

5:00 am-9:41 am

1 stop5h 41m

$290

KalispellChicago

FCA - ORD

FCAORD

Kalispell Glacier Park

Fri 5/29

1:25 pm-6:04 pm

Nonstop3h 39m

Chicago O'Hare Intl

Tue 6/2

9:45 am-12:35 pm

Nonstop3h 50m

$309

Great FallsChicago

GTF - ORD

GTFORD

Great Falls

Sun 4/19

9:26 pm-9:40 am

2 stops35h 14m

Chicago O'Hare Intl

Sun 4/26

7:50 am-8:41 pm

1 stop13h 51m

$313

KalispellChicago

FCA - ORD

FCAORD

Kalispell Glacier Park

Fri 5/15

1:33 pm-8:37 pm

2 stops30h 04m

Chicago O'Hare Intl

Sun 5/24

8:52 pm-9:46 am

1 stop13h 54m

$336

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 September is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Montana averaging around $236.

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 $395. 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 $610.

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 at noon is the least expensive time of day to depart. momondo users have found prices as low as $377 when looking at flights departing at noon. Try not to purchase tickets in the morning because they tend to be around $467. 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 $347 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.

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

$203

Fastest flight time

3h 02m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Montana in the past 72 hours is $203. The best round-trip flight deal from Montana to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $331.
The fastest flight from Montana to Chicago O'Hare Intl Airport takes 3h 02m
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
7.1
11,507 reviews
Search American Airlines flights
United AirlinesPriceFrom $229Free CancellationRating
7.4
9,491 reviews
Search United Airlines flights
DeltaPriceFrom $230Free CancellationRating
7.9
8,340 reviews
Search Delta flights
Alaska AirlinesPriceFrom $350Free CancellationRating
7.9
12,121 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
Rosemont
Naperville
New Buffalo
Orland Park
Kenosha
Oak Brook
Joliet
Janesville
Racine
Hammond
Aurora
Elgin
Tinley Park
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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