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Cheap flights from Chicago O'Hare Intl Airport to Montana from $125

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 O'Hare Intl Airport to Montana departing on 8/12. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to Montana

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
3:55 pm - 7:59 pm
ORD
-
BIL
5h 04m
1 stop
Delta Logo
11:51 am - 6:19 pm
BIL
-
ORD
5h 28m
1 stop
$271Delta
Sat, Jul 25 - Wed, Aug 5
Delta Logo
11:10 am - 7:59 pm
ORD
-
BIL
9h 49m
2 stops
Delta Logo
5:20 am - 11:59 am
BIL
-
ORD
5h 39m
1 stop
$276Delta
Sat, Jul 25 - Sat, Aug 1
United Airlines Logo
5:00 am - 9:35 am
ORD
-
BIL
5h 35m
1 stop
United Airlines Logo
6:00 pm - 12:44 am
BIL
-
ORD
5h 44m
1 stop
$286United Airlines
Sat, Jul 18 - Sat, Jul 25
United Airlines Logo
2:42 pm - 9:19 pm
ORD
-
BZN
7h 37m
1 stop
United Airlines Logo
4:30 pm - 8:37 pm
BZN
-
ORD
3h 07mnonstop
$295United Airlines
Wed, Aug 26 - Wed, Sep 2
American Airlines Logo
9:40 am - 12:30 pm
ORD
-
MSO
3h 50mnonstop
American Airlines Logo
1:29 pm - 6:00 pm
MSO
-
ORD
3h 31mnonstop
$309American Airlines
Sat, Sep 19 - Sat, Oct 3
Multiple Airlines Logo
7:15 am - 9:09 am
ORD
-
BIL
26h 54m
1 stop
Multiple Airlines Logo
9:59 am - 5:28 am
BIL
-
ORD
18h 29m
1 stop
$310Multiple Airlines
Sun, Jul 26 - Mon, Aug 3
Alaska Airlines Logo
1:03 pm - 10:59 pm
ORD
-
BZN
10h 56m
1 stop
Alaska Airlines Logo
3:40 pm - 11:41 pm
BZN
-
ORD
7h 01m
1 stop
$317Alaska Airlines
Fri, Sep 11 - Mon, Sep 14
American Airlines Logo
10:05 am - 12:45 pm
ORD
-
FCA
3h 40mnonstop
American Airlines Logo
4:48 pm - 9:30 pm
FCA
-
ORD
3h 42mnonstop
$319American Airlines
Tue, Jun 9 - Wed, Jun 17
Multiple Airlines Logo
7:15 am - 9:14 am
ORD
-
BIL
26h 59m
1 stop
Multiple Airlines Logo
9:59 am - 5:28 am
BIL
-
ORD
18h 29m
1 stop
$322Multiple Airlines
Thu, Jul 23 - Mon, Aug 3
Alaska Airlines Logo
3:52 pm - 10:59 pm
ORD
-
MSO
8h 07m
1 stop
Alaska Airlines Logo
7:00 am - 6:04 pm
MSO
-
ORD
10h 04m
1 stop
$329Alaska Airlines
Mon, Sep 14 - Fri, Sep 18

American Airlines flights from Chicago O'Hare Intl Airport to Montana

Our best American Airlines deals on Chicago O'Hare Intl Airport to Montana flight tickets
American Airlines
Jul 7
ORD1:25 pmChicago O'Hare Intl
8h 15m
1 stop
BZN8:40 pmBozeman Gallatin Field
Jul 11
BZN5:03 pmBozeman Gallatin Field
3h 27m
ORD9:30 pmChicago O'Hare Intl
$295
American Airlines
Sep 12
ORD8:20 pmChicago O'Hare Intl
3h 43m
MSO11:03 pmMissoula Johnson-Bell Field
Sep 19
MSO6:43 amMissoula Johnson-Bell Field
3h 27m
ORD11:10 amChicago O'Hare Intl
$309
American Airlines
Jun 9
ORD1:16 pmChicago O'Hare Intl
3h 46m
FCA4:02 pmKalispell Glacier Park
Jun 17
FCA4:48 pmKalispell Glacier Park
3h 42m
ORD9:30 pmChicago O'Hare Intl
$319

United Airlines flights from Chicago O'Hare Intl Airport to Montana

Our best United Airlines deals on Chicago O'Hare Intl Airport to Montana flight tickets
United Airlines
Jul 18
ORD5:00 amChicago O'Hare Intl
5h 35m
1 stop
BIL9:35 amBillings Logan Intl
Jul 25
BIL6:00 pmBillings Logan Intl
5h 44m
1 stop
ORD12:44 amChicago O'Hare Intl
$286
United Airlines
Aug 1
ORD5:00 amChicago O'Hare Intl
5h 35m
1 stop
BIL9:35 amBillings Logan Intl
Aug 7
BIL6:00 pmBillings Logan Intl
5h 44m
1 stop
ORD12:44 amChicago O'Hare Intl
$298
United Airlines
Jun 13
ORD5:00 amChicago O'Hare Intl
5h 37m
1 stop
BZN9:37 amBozeman Gallatin Field
Jun 20
BZN2:26 pmBozeman Gallatin Field
7h 23m
1 stop
ORD10:49 pmChicago O'Hare Intl
$300

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Montana 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 May 18, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Montana that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sat 7/25

3:55 pm-7:59 pm

1 stop5h 04m

Billings Logan Intl

Wed 8/5

11:51 am-6:19 pm

1 stop5h 28m

$271

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sat 7/25

11:10 am-7:59 pm

2 stops9h 49m

Billings Logan Intl

Sat 8/1

5:20 am-11:59 am

1 stop5h 39m

$276

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sat 7/18

5:00 am-9:35 am

1 stop5h 35m

Billings Logan Intl

Sat 7/25

6:00 pm-12:44 am

1 stop5h 44m

$286

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Wed 8/26

2:42 pm-9:19 pm

1 stop7h 37m

Bozeman Gallatin Field

Wed 9/2

4:30 pm-8:37 pm

Nonstop3h 07m

$295
Quickest round-trip

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Sat 9/19

9:40 am-12:30 pm

Nonstop3h 50m

Missoula Johnson-Bell Field

Sat 10/3

1:29 pm-6:00 pm

Nonstop3h 31m

$309

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sun 7/26

7:15 am-9:09 am

1 stop26h 54m

Billings Logan Intl

Mon 8/3

9:59 am-5:28 am

1 stop18h 29m

$310

ChicagoBozeman

ORD - BZN

ORDBZN

Chicago O'Hare Intl

Fri 9/11

1:03 pm-10:59 pm

1 stop10h 56m

Bozeman Gallatin Field

Mon 9/14

3:40 pm-11:41 pm

1 stop7h 01m

$317

ChicagoKalispell

ORD - FCA

ORDFCA

Chicago O'Hare Intl

Tue 6/9

10:05 am-12:45 pm

Nonstop3h 40m

Kalispell Glacier Park

Wed 6/17

4:48 pm-9:30 pm

Nonstop3h 42m

$319

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Thu 7/23

7:15 am-9:14 am

1 stop26h 59m

Billings Logan Intl

Mon 8/3

9:59 am-5:28 am

1 stop18h 29m

$322

ChicagoMissoula

ORD - MSO

ORDMSO

Chicago O'Hare Intl

Mon 9/14

3:52 pm-10:59 pm

1 stop8h 07m

Missoula Johnson-Bell Field

Fri 9/18

7:00 am-6:04 pm

1 stop10h 04m

$329

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 Montana from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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

What is the cheapest month to fly to Montana?

The cheapest month to fly to Montana from Chicago O'Hare Intl Airport is in October. Flight prices, which tend to average around $133, are often lower during this time because this is during the off-season. The month of June is another great option to travel to Montana, with average flight prices from Chicago O'Hare Intl Airport averaging around $136.

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 $314. The most expensive day to fly to Montana is Thursday, with ticket prices averaging around $367.

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 $321. In the afternoon is when there is more demand to fly to Montana, so prices are often more expensive at around $392 per ticket.

What is the cheapest Chicago O'Hare Intl to Montana flight route?

Fly from Chicago O'Hare Intl to Bozeman Gallatin Field for the best Chicago O'Hare Intl - Montana flight prices

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Montana?

You are more likely to see cheaper flights to Montana from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Montana for around $367 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montana from Chicago O'Hare Intl Airport for as low as $308 on momondo.

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

You could potentially save up to 23% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Montana flight.

Cheap Chicago O'Hare Intl Airport to Montana flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Montana

Best Price Found

$155

Fastest flight time

3h 16m

Direct flights

Every day

Airports in Montana

32 airports
The best one-way flight to Montana from Chicago O'Hare Intl Airport in the past 72 hours is $155. The best round-trip flight deal from Chicago O'Hare Intl Airport to Montana found on momondo in the last 72 hours is $309.
The fastest flight from Chicago O'Hare Intl Airport to Montana takes 3h 16m
Direct flights go from Chicago O'Hare Intl Airport to Montana every day.
There are 32 airports in Montana. From Chicago O'Hare Intl Airport there are direct flights to Billings Logan Intl (BIL), Bozeman Gallatin Field (BZN).
Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Montana

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Montana?

    Prices for flights from Chicago O'Hare Intl Airport to Montana are updated daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Montana?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Montana?

    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 Chicago O'Hare Intl Airport to Montana.

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

    The travel and health documents you'll need for your trip to Montana 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 Montana. 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 Chicago O'Hare Intl Airport to Montana?

Best airlines flying from Chicago O'Hare Intl Airport to Montana

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Montana with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $216Free CancellationRating
7.9
8,447 reviews
Search Delta flights
American AirlinesPriceFrom $217Free CancellationRating
7.1
11,648 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $226Free CancellationRating
7.9
12,378 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $229Free CancellationRating
7.4
9,736 reviews
Search United Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to Montana. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Chicago to Montana on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Montana from Chicago.

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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