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O'Hare Intl

$97+ Cheap flights from Montana to O'Hare Intl (ORD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — ORD
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
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Find flight deals from Montana to O'Hare Intl

Cheapest flights from Montana to O'Hare Intl
Explore the most affordable flight options available from Montana to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

This United Airlines deal was found by Cheapflights users on 11/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:15 amBZN - ORD
Nonstop3h 19mUnited Airlines
Fri 1/27:58 pmORD - BZN
Nonstop3h 31mUnited Airlines
Deal found 11/26$229
This American Airlines deal was found by Cheapflights users on 11/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/262:29 pmBZN - ORD
1 stop8h 11mAmerican Airlines
Fri 1/26:00 amORD - BZN
1 stop8h 59mAmerican Airlines
Deal found 11/26$249
This Delta deal was found by Cheapflights users on 11/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:25 amBIL - ORD
1 stop7h 34mDelta
Thu 1/13:00 pmORD - BIL
1 stop8h 41mDelta
Deal found 11/25$249
This Delta deal was found by Cheapflights users on 11/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:15 pmBZN - ORD
2 stops10h 47mDelta
Fri 1/26:30 pmORD - BZN
1 stop6h 16mDelta
Deal found 11/26$254
This United Airlines deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:50 pmBZN - ORD
Nonstop2h 59mUnited Airlines
Tue 12/168:45 amORD - BZN
1 stop5h 50mUnited Airlines
Deal found 11/23$264
This Delta deal was found by Cheapflights users on 11/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:00 amMSO - ORD
1 stop6h 40mDelta
Wed 1/287:20 amORD - MSO
1 stop6h 15mDelta
Deal found 11/24$269
This Delta deal was found by Cheapflights users on 11/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/112:36 pmBZN - ORD
1 stop8h 25mDelta
Mon 1/127:30 amORD - BZN
1 stop7h 50mDelta
Deal found 11/26$271
This Kiwi.com deal was found by Cheapflights users on 11/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1312:32 pmBIL - ORD
2 stops16h 33mMultiple Airlines
Sun 1/410:49 pmORD - BIL
1 stop11h 35mMultiple Airlines
Deal found 11/25$271
This Delta deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:45 amBZN - ORD
1 stop6h 00mDelta
Mon 12/155:30 amORD - BZN
1 stop8h 56mDelta
Deal found 11/23$274
This Delta deal was found by Cheapflights users on 11/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/156:25 amBIL - ORD
1 stop4h 15mDelta
Thu 1/13:00 pmORD - BIL
1 stop8h 41mDelta
Deal found 11/25$274
This Delta deal was found by Cheapflights users on 11/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/123:00 pmBZN - ORD
1 stop7h 59mDelta
Sat 1/108:50 amORD - BZN
2 stops12h 35mDelta
Deal found 11/25$276
This Delta deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/115:30 amBZN - ORD
1 stop6h 10mDelta
Tue 12/163:50 pmORD - BZN
2 stops9h 28mDelta
Deal found 11/23$279

Cheap flight deals from Montana to O'Hare Intl

Keep the following information in mind while searching for Montana to O'Hare Intl flight deals. Data was last updated November 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$199
(American Airlines)

One-way from

$97
(Kiwi.com)

Popular in

April

Cheapest in

October

Average price

$378

Good round-trip deal

$348 or less

Good one-way deal

$169 or less
Provider with most accurate pricing for Bozeman Gallatin Field-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Bozeman Gallatin Field-Chicago (CHI) flights.
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From Montana to Chicago O'Hare Intl
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One-way flight from Montana to Chicago O'Hare Intl
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Highest demand for flights based on searches. 17% potential increase in price ($78 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Montana to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Montana to Chicago O'Hare Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Montana to O'Hare Intl 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, Cheapflights users made 2,558,603 searches. Data last updated November 26, 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

Montana

Fly to

O'Hare Intl

Route

Depart

Return

Price

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Tue 2/10

4:16 pm-11:59 pm

1 stop6h 43m

Chicago O'Hare Intl

Tue 2/17

9:16 am-11:46 am

Nonstop3h 30m

$209

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Sat 1/17

12:35 pm-4:44 pm

Nonstop3h 09m

Chicago O'Hare Intl

Tue 1/20

10:40 am-3:20 pm

1 stop5h 40m

$221

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Fri 12/26

7:15 am-11:34 am

Nonstop3h 19m

Chicago O'Hare Intl

Fri 1/2

7:58 pm-10:29 pm

Nonstop3h 31m

$229

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Mon 12/29

12:42 pm-4:51 pm

Nonstop3h 09m

Chicago O'Hare Intl

Tue 1/6

9:11 am-11:44 am

Nonstop3h 33m

$229

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Mon 2/16

3:05 pm-11:52 pm

1 stop7h 47m

Chicago O'Hare Intl

Mon 2/23

6:15 am-12:53 pm

1 stop7h 38m

$234

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Fri 1/9

3:00 pm-11:53 pm

1 stop7h 53m

Chicago O'Hare Intl

Fri 1/16

2:20 pm-10:27 pm

1 stop9h 07m

$234

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 1/8

3:00 pm-11:53 pm

1 stop7h 53m

Chicago O'Hare Intl

Sun 1/11

3:59 pm-11:17 pm

2 stops8h 18m

$236

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Tue 2/10

5:15 am-4:57 pm

2 stops10h 42m

Chicago O'Hare Intl

Tue 2/17

7:40 am-2:22 pm

1 stop7h 42m

$239

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Tue 12/23

4:25 pm-11:59 pm

1 stop6h 34m

Chicago O'Hare Intl

Mon 1/5

9:06 am-11:40 am

Nonstop3h 34m

$239

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Tue 2/17

3:05 pm-11:52 pm

1 stop7h 47m

Chicago O'Hare Intl

Tue 2/24

6:15 am-5:41 pm

2 stops12h 26m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/26

Showing 1-10 of 60 results
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Best time to book a flight from Montana to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Montana with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Montana to Chicago O'Hare Intl Airport

What is the cheapest month to book a flight from Montana to Chicago O'Hare Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Montana to Chicago O'Hare Intl Airport (average of $169). Flying from Montana to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $298). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MT to ORD?

Find hourly flight availability from Montana to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 26, 2025.

One of the essential ways to save on airfare from Montana to Chicago O'Hare Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 41% on airfare.

Weekly flight availability from Montana to Chicago O'Hare Intl Airport

Explore weekly flight availability from Montana to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 26, 2025.

The most flights from USMT to ORD are scheduled on a Monday (3 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Related info for your journey

Find useful and relevant information for your journey from Montana to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Montana to Chicago O'Hare Intl Airport?

    A quick flight from Montana to Chicago O'Hare Intl Airport can take about 6h 43m. United Airlines provides one of the quickest options available for as low as $209. Montana and Chicago O'Hare Intl Airport are separated by a distance of 1182 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Montana to Chicago O'Hare Intl Airport?

    The most popular route from Montana to Chicago O'Hare Intl Airport is Bozeman Gallatin Field - Chicago O'Hare Intl. You may also consider Billings Logan Intl - Chicago O'Hare Intl or Missoula Johnson-Bell Field - Chicago O'Hare Intl.

  • What are the most reliable airlines from Montana to Chicago O'Hare Intl Airport?

    The top 3 most reliable airlines when flying from Montana to Chicago O'Hare Intl Airport are Lufthansa (88%), United Airlines (86%) and Emirates (84%).

  • What are the cheapest flights from Montana to Chicago O'Hare Intl Airport?

    The cheapest flight price from Montana to Chicago O'Hare Intl Airport is $114. On average you can expect to pay $335. The most popular route, (Bozeman Gallatin Field - Chicago O'Hare Intl), can usually be booked for $208.

  • Can I find deals for flights from Montana to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Montana to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montana to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to O'Hare Intl.

  • Can I find deals for business class flights from Montana to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Montana to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montana to Chicago O'Hare Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Montana to Chicago O'Hare Intl Airport (average of $169). Flying from Montana to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $298). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Gurnee
Naperville
Hoffman Estates
Beloit
Elgin
Skokie
Delavan
Oak Brook
Des Plaines
Elk Grove Village
Lake Geneva
Downers Grove
Bridgeview
Warrenville
Waukegan
Aurora
Kenosha
Evanston

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Alternative routes for Montana to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Ontario to O'Hare Intl flights
Atlanta to Midway flights
Minneapolis to O'Hare Intl flights
Baltimore to Midway flights
Hobby to Midway flights
Santa Ana to O'Hare Intl flights
Dulles Intl to Midway flights
San Diego to O'Hare Intl flights
George Bush Intcntl to O'Hare Intl flights
Los Angeles to Midway flights
Austin to O'Hare Intl flights
Raleigh to O'Hare Intl flights
Charlotte to O'Hare Intl flights
Fort Lauderdale to O'Hare Intl flights
Love Field to O'Hare Intl flights
Cleveland to O'Hare Intl flights
Orlando to O'Hare Intl flights
Minneapolis to Midway flights
Newark to Midway flights
LaGuardia to Midway flights
San Francisco to Midway flights
Portland to O'Hare Intl flights
Philadelphia to Midway flights
Miami to O'Hare Intl flights
Boston to Midway flights
Tampa to Midway flights
Reagan-National to Midway flights
Salt Lake City to O'Hare Intl flights
Orlando to Midway flights
Love Field to Midway flights
Raleigh to Midway flights

Top 4 airlines flying from Montana to O'Hare Intl

Discover the top 4 airlines that operate flights from Montana to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$191Average$339FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$229Average$456FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$382FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$349Average$469FlexibilityNo cancel feeOn-time75%

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