To save up to 83% on this flight, we recommend booking at least 46 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Montana to Illinois from $500 1-2 weeks out and tickets from $597 for flights departing within the next 72 hours.
The best pricing can be found in the month of February. Prices to Illinois from Montana average $493. You can even find prices in February for less than $493, as users have found deals to Illinois from as low as $254. The month of January appears to be one of the more expensive times to travel to Illinois from Montana. Flying in the targeted month can save you up to 21%.
When flying from Montana to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Fly from
Fly to
Budget
$129 - $402
Route
Depart
Return
Price
Missoula Johnson-Bell FieldChicago O'Hare Intl
MSO - ORD
MSOORD
Missoula Johnson-Bell Field
Sat 5/11
1 stop7h 24m
Chicago O'Hare Intl
Tue 5/14
1 stop21h 37m
Missoula Johnson-Bell FieldChicago Midway
MSO - MDW
MSOMDW
Missoula Johnson-Bell Field
Thu 5/2
1 stop8h 23m
Chicago Midway
Tue 5/7
1 stop17h 14m
Missoula Johnson-Bell FieldChicago O'Hare Intl
MSO - ORD
MSOORD
Missoula Johnson-Bell Field
Sat 5/4
1 stop7h 55m
Chicago O'Hare Intl
Tue 5/7
1 stop5h 52m
Missoula Johnson-Bell FieldChicago O'Hare Intl
MSO - ORD
MSOORD
Missoula Johnson-Bell Field
Sat 5/4
2 stops12h 32m
Chicago O'Hare Intl
Tue 5/7
1 stop5h 52m
Missoula Johnson-Bell FieldChicago O'Hare Intl
MSO - ORD
MSOORD
Missoula Johnson-Bell Field
Fri 9/6
1 stop8h 42m
Chicago O'Hare Intl
Mon 9/9
1 stop7h 39m
Bozeman Gallatin FieldChicago O'Hare Intl
BZN - ORD
BZNORD
Bozeman Gallatin Field
Tue 4/23
1 stop12h 36m
Chicago O'Hare Intl
Wed 4/24
1 stop8h 14m
Missoula Johnson-Bell FieldChicago O'Hare Intl
MSO - ORD
MSOORD
Missoula Johnson-Bell Field
Sat 5/18
1 stop6h 06m
Chicago O'Hare Intl
Sun 5/26
Nonstop3h 43m
Bozeman Gallatin FieldChicago O'Hare Intl
BZN - ORD
BZNORD
Bozeman Gallatin Field
Wed 6/12
1 stop7h 21m
Chicago O'Hare Intl
Fri 6/14
1 stop14h 04m
Bozeman Gallatin FieldChicago O'Hare Intl
BZN - ORD
BZNORD
Bozeman Gallatin Field
Thu 4/11
1 stop15h 03m
Chicago O'Hare Intl
Sun 4/14
2 stops25h 11m
No data available for this route at this time. Please check back soon.
Overall
Entertainment
Boarding
Food
Crew
Comfort
Reviews
I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose
Overall
Entertainment
Boarding
Food
Crew
Comfort
Reviews
I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose
Overall
Entertainment
Boarding
Food
Crew
Comfort
Reviews
I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose
Overall
Entertainment
Boarding
Food
Crew
Comfort
Reviews
I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose
Overall
Entertainment
Boarding
Food
Crew
Comfort
Reviews
I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose
Overall
Entertainment
Boarding
Food
Crew
Comfort
Reviews
I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose
1%of flight departures | Early morningMidnight to 6 am |
---|---|
62%of flight departures | Morning6 am to noon |
37%of flight departures | AfternoonNoon to 6 pm |
0%of flight departures | Evening6 pm to midnight |
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Montana to Illinois. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
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Yes, you can often find last-minute deals on Montana to Illinois flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.
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Cancellation policies vary by airline and fare type. After entering your flight details, you can view the cancellation policies for each deal in the search results. Some deals may offer flexibility in terms of cancellation and changes.