How many flights depart from Chicago to Montana on average per week?

101 flights are operational weekly from Chicago to Montana as of July 2026. The most popular departure day for this route is Mon, with 19% of flights per week taking off on this day.

What is the cheapest airline that flies from Chicago to Montana?

United Airlines, Southwest, and Delta are the most popular carriers operating from Chicago to Montana

How many flights depart from Chicago to Montana on average per day?

As of July 2026, there are 14 flights per day flying from Chicago to Montana. The most common time of day flights depart is 9:00AM, with 52% of flights taking off at noon.

What airlines fly to Montana?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Montana from Chicago according to our data. American Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Montana. Keep in mind that there are 5 different airlines that fly to Montana on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Chicago to Montana?

Prices for flights from Chicago to Montana were last updated today.

How many operators does momondo search for flights from Chicago to Montana?

The number of operators available for flights from Chicago to Montana is 5 as of July 2026.

How old do you have to be to fly from Chicago to Montana?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago to Montana.

What documentation or ID do you need to fly to Montana?

The travel and health documents required for your trip to Montana can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Montana. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$142 Cheap Flights from Chicago to Montana in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago to Montana

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:40 am - 11:02 am

ORD

BIL

3h 22mnonstop

2:29 pm - 10:46 pm

BIL

ORD

7h 17m

1 stop

$261United Airlines

Sat, Aug 29 - Sat, Sep 5

4:45 pm - 10:53 pm

ORD

BIL

7h 08m

1 stop

5:20 am - 11:59 am

BIL

ORD

5h 39m

1 stop

$271Delta

Sat, Aug 29 - Sat, Sep 5

7:13 pm - 11:15 pm

MDW

BIL

5h 02m

1 stop

6:20 am - 1:20 pm

BIL

MDW

6h 00m

1 stop

$271Delta

Tue, Sep 22 - Tue, Sep 29

8:40 am - 11:02 am

ORD

BIL

3h 22mnonstop

11:43 am - 3:48 pm

BIL

ORD

3h 05mnonstop

$272United Airlines

Sat, Aug 29 - Sat, Sep 5

9:41 am - 11:57 am

ORD

BIL

3h 16mnonstop

12:28 pm - 4:30 pm

BIL

ORD

3h 02mnonstop

$299American Airlines

Sat, Sep 26 - Wed, Sep 30

9:40 am - 12:40 pm

ORD

MSO

4h 00mnonstop

1:10 pm - 5:53 pm

MSO

ORD

3h 43mnonstop

$309American Airlines

Fri, Nov 13 - Sun, Nov 15

4:40 pm - 10:25 pm

MDW

BZN

6h 45m

2 stops

6:55 am - 3:05 pm

BZN

MDW

7h 10m

1 stop

$310Southwest

Tue, Sep 22 - Tue, Sep 29

5:00 pm - 10:25 pm

MDW

BZN

6h 25m

2 stops

4:10 pm - 5:40 am

BZN

MDW

12h 30m

1 stop

$316Southwest

Mon, Aug 24 - Sat, Aug 29

8:00 am - 3:17 pm

ORD

MSO

8h 17m

1 stop

4:16 pm - 11:59 pm

MSO

ORD

6h 43m

1 stop

$329Alaska Airlines

Sat, Sep 12 - Sat, Sep 19

8:00 am - 4:39 pm

ORD

GTF

9h 39m

1 stop

5:19 pm - 6:20 am

GTF

ORD

12h 01m

1 stop

$348Alaska Airlines

Sat, Sep 19 - Sat, Sep 26

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American Airlines flights from Chicago to Montana

Our best American Airlines deals on Chicago to Montana flight tickets

American Airlines

Sep 26

ORD9:41 amChicago O'Hare Intl

3h 16m

BIL11:57 amBillings Logan Intl

Sep 30

BIL12:28 pmBillings Logan Intl

3h 02m

ORD4:30 pmChicago O'Hare Intl

$299

American Airlines

Sep 19

ORD10:00 amChicago O'Hare Intl

3h 56m

MSO12:56 pmMissoula Johnson-Bell Field

Oct 3

MSO12:45 pmMissoula Johnson-Bell Field

3h 40m

ORD5:25 pmChicago O'Hare Intl

$309

American Airlines

Aug 21

ORD8:00 amChicago O'Hare Intl

3h 05m

BIL10:05 amBillings Logan Intl

Aug 27

BIL12:22 pmBillings Logan Intl

3h 01m

ORD4:23 pmChicago O'Hare Intl

$313

Alaska Airlines flights from Chicago to Montana

Our best Alaska Airlines deals on Chicago to Montana flight tickets

Alaska Airlines

Sep 12

ORD4:08 pmChicago O'Hare Intl

7h 53m

1 stop

MSO11:01 pmMissoula Johnson-Bell Field

Sep 19

MSO4:16 pmMissoula Johnson-Bell Field

6h 43m

1 stop

ORD11:59 pmChicago O'Hare Intl

$329

Alaska Airlines

Sep 10

ORD1:03 pmChicago O'Hare Intl

10h 56m

1 stop

BZN10:59 pmBozeman Gallatin Field

Sep 15

BZN2:21 pmBozeman Gallatin Field

8h 38m

1 stop

ORD11:59 pmChicago O'Hare Intl

$335

Alaska Airlines

Sep 19

ORD8:00 amChicago O'Hare Intl

9h 39m

1 stop

GTF4:39 pmGreat Falls

Sep 26

GTF5:19 pmGreat Falls

12h 01m

1 stop

ORD6:20 amChicago O'Hare Intl

$348

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sat 8/29

8:40 am-11:02 am

Nonstop3h 22m

Billings Logan Intl

Sat 9/5

2:29 pm-10:46 pm

1 stop7h 17m

$261

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sat 8/29

4:45 pm-10:53 pm

1 stop7h 08m

Billings Logan Intl

Sat 9/5

5:20 am-11:59 am

1 stop5h 39m

$271

ChicagoBillings

MDW - BIL

MDWBIL

Chicago Midway

Tue 9/22

7:13 pm-11:15 pm

1 stop5h 02m

Billings Logan Intl

Tue 9/29

6:20 am-1:20 pm

1 stop6h 00m

$271

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sat 8/29

8:40 am-11:02 am

Nonstop3h 22m

Billings Logan Intl

Sat 9/5

11:43 am-3:48 pm

Nonstop3h 05m

$272

Quickest round-trip

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sat 9/26

9:41 am-11:57 am

Nonstop3h 16m

Billings Logan Intl

Wed 9/30

12:28 pm-4:30 pm

Nonstop3h 02m

$299

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Fri 11/13

9:40 am-12:40 pm

Nonstop4h 00m

Missoula Johnson-Bell Field

Sun 11/15

1:10 pm-5:53 pm

Nonstop3h 43m

$309

ChicagoBozeman

MDW - BZN

MDWBZN

Chicago Midway

Tue 9/22

4:40 pm-10:25 pm

2 stops6h 45m

Bozeman Gallatin Field

Tue 9/29

6:55 am-3:05 pm

1 stop7h 10m

$310

ChicagoBozeman

MDW - BZN

MDWBZN

Chicago Midway

Mon 8/24

5:00 pm-10:25 pm

2 stops6h 25m

Bozeman Gallatin Field

Sat 8/29

4:10 pm-5:40 am

1 stop12h 30m

$316

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Sat 9/12

8:00 am-3:17 pm

1 stop8h 17m

Missoula Johnson-Bell Field

Sat 9/19

4:16 pm-11:59 pm

1 stop6h 43m

$329

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Sat 9/19

8:00 am-4:39 pm

1 stop9h 39m

Great Falls

Sat 9/26

5:19 pm-6:20 am

1 stop12h 01m

$348

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Chicago to Montana

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

Prices

Airlines

Other information

What is the cheapest month to fly to Montana?

The cheapest month to fly to Montana from Chicago is in January. Flight prices, which tend to average around $320, are often lower during this time because this is during the off-season. The month of October is another great option to travel to Montana, with average flight prices from Chicago averaging around $333.

What is the cheapest day to depart on your flight to Montana?

Our data shows that Tuesday is the least expensive day to fly to Montana. Tickets to fly out on this day can be as low as $345. The most expensive day to fly to Montana is Thursday, with ticket prices averaging around $383.

What is the cheapest time of day to depart on your flight to Montana?

The cheapest time of day to fly to Montana is at noon when flights can be purchased for as low as $346. In the afternoon is when there is more demand to fly to Montana, so prices are often more expensive at around $381 per ticket.

What is the cheapest Chicago to Montana flight route?

Fly from Chicago O'Hare Intl to Billings Logan Intl for the best Chicago - Montana flight prices

How far in advance should I book a flight from Chicago to Montana?

You are more likely to see cheaper flights to Montana from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Montana for around $375 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montana from Chicago for as low as $335 on momondo.

What cabin class options are available on Chicago to Montana flights?

There are 4 cabin classes available to choose from on Chicago to Montana 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 Chicago to Montana flights?

You could potentially save up to 23% on your flight if you consider stops on a Chicago to Montana flight.

Cheap Chicago to Montana flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Montana

Best Price Found	$164
Fastest flight time	3h 05m
Direct flights	Every day
Airports in Montana	32 airports

The best one-way flight to Montana from Chicago in the past 72 hours is $164. The best round-trip flight deal from Chicago to Montana found on momondo in the last 72 hours is $326.

The fastest flight from Chicago to Montana takes 3h 05m

Direct flights go from Chicago to Montana every day.

There are 32 airports in Montana. From Chicago there are direct flights to Billings Logan Intl (BIL), Bozeman Gallatin Field (BZN).

Search flight deals

Frequently asked questions about flying from Chicago to Montana

When did momondo last update prices for flights from Chicago to Montana?
Prices for flights from Chicago to Montana were last updated today.
How many operators does momondo search for flights from Chicago to Montana?
The number of operators available for flights from Chicago to Montana is 5 as of July 2026.
How old do you have to be to fly from Chicago to Montana?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago to Montana.
What documentation or ID do you need to fly to Montana?
The travel and health documents required for your trip to Montana can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Montana. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Chicago to Montana?
Based on momondo bookings for flights between Chicago and Montana, the leading plane model is Boeing 737 MAX 8, making up 28.19% of the total bookings. Other popular models include Boeing 737-800 with 25.11%, Airbus A319 with 13.36%, and Embraer 175 (Enhanced Winglets) with 6.48%.

Best airlines flying from Chicago to Montana

Compare and see reviews for airlines that fly from Chicago to Montana with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $210	Free Cancellation	Rating 8.0 4,238 reviews	Search Southwest flights
Delta	PriceFrom $216	Free Cancellation	Rating 7.8 8,472 reviews	Search Delta flights
American Airlines	PriceFrom $219	Free Cancellation	Rating 7.1 11,836 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $226	Free Cancellation	Rating 7.9 12,685 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $245	Free Cancellation	Rating 7.4 10,014 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Montana?

Finding the right flight to Montana from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Montana quick and easy, saving you time and money.

Can I find flights from Chicago to Montana with flexible booking policies on momondo?

Flights from Chicago to Montana with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Chicago to Montana?

momondo provides multiple filters to help you find the best flight to Montana from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Chicago to Montana right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Chicago to Montana now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Montana and let you know when they change.

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Popular cities in Montana

Flights to New Yorkfrom $73

Flights to Los Angelesfrom $56

Flights to Orlandofrom $57

Flights to Miamifrom $69

Flights to Chicagofrom $76

Flights to San Franciscofrom $55

Flights to Las Vegasfrom $46

Flights to Washington, D.C.from $56

Flights to Bostonfrom $110

Flights to Atlantafrom $56

Flights to Fort Lauderdalefrom $58

Flights to Dallasfrom $77

Cheap flights from Chicago to Montana from $142

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Montana departing on 9/7. 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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American Airlines flights from Chicago to Montana

Our best American Airlines deals on Chicago to Montana flight tickets

Alaska Airlines flights from Chicago to Montana

Our best Alaska Airlines deals on Chicago to Montana flight tickets

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How to get the cheapest flight ticket from Chicago to Montana

What is the cheapest month to fly to Montana?

What is the cheapest day to depart on your flight to Montana?

What is the cheapest time of day to depart on your flight to Montana?

What is the cheapest Chicago to Montana flight route?

How far in advance should I book a flight from Chicago to Montana?

What cabin class options are available on Chicago to Montana flights?

Can stopping save me money on Chicago to Montana flights?

What is the cheapest airline that flies from Chicago to Montana?

What airlines fly to Montana?

How many flights depart from Chicago to Montana on average per day?

How many flights depart from Chicago to Montana on average per week?

Cheap Chicago to Montana flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Montana

Frequently asked questions about flying from Chicago to Montana

Best airlines flying from Chicago to Montana

Compare and see reviews for airlines that fly from Chicago to Montana with momondo

Why use momondo?

An easier way to manage your Montana trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Montana

Popular cities in Montana

Popular flights according to clicks in the last 7 days on momondo

Chicago flight routes

According to popular flight searches on momondo this year

Montana flight routes

According to popular flight searches on momondo this year

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