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O'Hare Intl

$110+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — ORD
Oct 19 — Oct 261
Sun 10/19
Sun 10/26
1 adult, Economy
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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 September 19, 2025.

Round-trip from

$191
(American Airlines)

One-way from

$110
(Trip.com)

Popular in

November

Cheapest in

July

Average price

$302

Good round-trip deal

$331 or less

Good one-way deal

$190 or less
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 ($81 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 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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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 September 19, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 9/17. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/233:04 pmBZN - ORD
1 stop7h 55mHawaiian Airlines
Mon 10/277:00 amORD - BZN
1 stop7h 02mHawaiian Airlines
Deal found 9/17$228
This American Airlines deal was found by Cheapflights users on 9/18. 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.
Sat 10/2512:20 pmBIL - ORD
Nonstop2h 57mAmerican Airlines
Wed 10/299:40 amORD - BIL
Nonstop3h 10mAmerican Airlines
Deal found 9/18$229
This KAYAK deal was found by Cheapflights users on 9/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/233:04 pmBZN - ORD
1 stop7h 55mAlaska Airlines
Mon 10/277:00 amORD - BZN
1 stop7h 02mAlaska Airlines
Deal found 9/18$230
This American Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 11/11:17 pmBIL - ORD
Nonstop2h 58mAmerican Airlines
Sat 11/85:18 amORD - BIL
1 stop9h 12mAmerican Airlines
Deal found 9/17$240
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/207:34 pmBZN - ORD
1 stop9h 50mAlaska Airlines
Wed 10/226:00 amORD - BZN
1 stop9h 10mAlaska Airlines
Deal found 9/17$248
This United Airlines deal was found by Cheapflights users on 9/18. 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 10/238:00 amBZN - ORD
Nonstop3h 05mUnited Airlines
Mon 10/279:15 amORD - BZN
Nonstop3h 28mUnited Airlines
Deal found 9/18$249
This KAYAK deal was found by Cheapflights users on 9/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/131:59 pmMSO - ORD
1 stop9h 25mAlaska Airlines
Mon 11/173:25 pmORD - MSO
1 stop9h 18mAlaska Airlines
Deal found 9/17$251
This Delta deal was found by Cheapflights users on 9/18. 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.
Sat 10/255:25 amBIL - ORD
1 stop7h 31mDelta
Wed 10/291:25 pmORD - BIL
2 stops10h 00mDelta
Deal found 9/18$254
This American Airlines deal was found by Cheapflights users on 9/17. 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.
Thu 10/94:54 pmBZN - ORD
Nonstop3h 10mAmerican Airlines
Mon 10/1310:36 amORD - BZN
Nonstop3h 32mAmerican Airlines
Deal found 9/17$260
This Delta deal was found by Cheapflights users on 9/16. 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.
Sun 11/25:10 amBZN - ORD
1 stop4h 25mDelta
Tue 11/47:37 amORD - BZN
1 stop7h 44mDelta
Deal found 9/16$265
This Delta deal was found by Cheapflights users on 9/16. 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.
Sat 11/17:25 amBZN - ORD
1 stop8h 53mDelta
Tue 11/46:08 amORD - BZN
2 stops9h 13mDelta
Deal found 9/16$266
This Hawaiian Airlines deal was found by Cheapflights users on 9/17. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/81:59 pmMSO - ORD
1 stop9h 25mHawaiian Airlines
Wed 11/123:25 pmORD - MSO
1 stop9h 18mHawaiian Airlines
Deal found 9/17$269

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 September 19, 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

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Wed 1/21

5:45 am-1:04 pm

1 stop6h 19m

Chicago O'Hare Intl

Mon 1/26

7:45 am-1:52 pm

1 stop7h 07m

$210

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Fri 10/31

11:16 am-9:40 pm

1 stop9h 24m

Chicago O'Hare Intl

Sun 11/2

5:00 am-1:08 pm

1 stop9h 08m

$228

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 10/30

11:16 am-9:40 pm

1 stop9h 24m

Chicago O'Hare Intl

Sun 11/2

5:00 am-1:08 pm

1 stop9h 08m

$228

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Sat 11/1

3:02 pm-12:24 am

1 stop8h 22m

Chicago O'Hare Intl

Tue 11/4

2:05 pm-1:02 pm

1 stop23h 57m

$228

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Fri 11/14

11:16 am-9:40 pm

1 stop9h 24m

Chicago O'Hare Intl

Sun 11/16

6:00 am-2:08 pm

1 stop9h 08m

$228

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Thu 10/23

3:04 pm-11:59 pm

1 stop7h 55m

Chicago O'Hare Intl

Sun 10/26

6:00 am-2:08 pm

1 stop9h 08m

$228

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Sat 10/25

12:20 pm-4:17 pm

Nonstop2h 57m

Chicago O'Hare Intl

Wed 10/29

9:40 am-11:50 am

Nonstop3h 10m

$229

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Wed 1/21

5:30 am-12:26 pm

1 stop5h 56m

Chicago O'Hare Intl

Mon 1/26

3:50 pm-8:17 pm

1 stop5h 27m

$237

MissoulaChicago

MSO - ORD

MSOORD

Missoula Johnson-Bell Field

Wed 1/21

7:00 am-5:38 pm

1 stop9h 38m

Chicago O'Hare Intl

Mon 1/26

9:45 am-12:25 pm

Nonstop3h 40m

$241

BozemanChicago

BZN - ORD

BZNORD

Bozeman Gallatin Field

Mon 10/20

8:00 am-12:05 pm

Nonstop3h 05m

Chicago O'Hare Intl

Thu 10/23

4:40 pm-6:58 pm

Nonstop3h 18m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/18

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, August is the cheapest month in which you can book a flight from Montana to Chicago O'Hare Intl Airport (average of $245). Flying from Montana to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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 September 19, 2025.

When flying from Montana to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 19, 2025.

The most flights from USMT to ORD are scheduled on a Monday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 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 2h 57m. Alaska Airlines provides one of the quickest options available for as low as $229. Montana and Chicago O'Hare Intl Airport are separated by a distance of 1057 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Montana to Chicago O'Hare Intl Airport one-way?

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $110. Users have also found prices from $114 and $137 on Hawaiian Airlines and Delta, respectively.

  • 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 Missoula Johnson-Bell Field - Chicago O'Hare Intl or Billings Logan Intl - 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 (73%), United Airlines (73%) and Emirates (72%).

  • 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 $133. On average you can expect to pay $704. The most popular route, (Bozeman Gallatin Field - Chicago O'Hare Intl), can usually be booked for $228.

  • 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, August is the cheapest month in which you can book a flight from Montana to Chicago O'Hare Intl Airport (average of $245). Flying from Montana to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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
Skokie
Gurnee
Hoffman Estates
Des Plaines
Elgin
Arlington Heights
Orland Park
Beloit
Racine
Rockford
Oak Brook
Elk Grove Village
Downers Grove
Naperville
Evanston
Merrillville
Bridgeview
Warrenville

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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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Top 5 airlines flying from Montana to O'Hare Intl

Discover the top 5 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 September 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$191Average$345FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$389FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$239Average$550FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$267Average$450FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$388Average$420FlexibilityNo cancel feeOn-time63%

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