$122+ Cheap flights from Illinois to Montana
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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BZN
Feb 27 — Mar 61
1 adult, Economy
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Find cheap flights from Illinois to Montana with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Montana
Keep the following information in mind while searching for Illinois to Montana flight deals. Data was last updated February 22, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $244 (Mytrip) |
One-way from | $122 (Mytrip) |
Popular in | December |
Cheapest in | April |
Average price | $435 |
Good round-trip deal | $381 or less |
Good one-way deal | $254 or less |
Find flight deals from Illinois to Montana
Cheapest flights from Illinois to MontanaExplore the most affordable flight options available from Illinois to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.
Explore the most affordable flight options available from Illinois to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.
This Mytrip deal was found by Cheapflights users on 2/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/78:09 amORD - MSO
1 stop8h 22mMultiple Airlines
Fri 4/119:06 pmMSO - ORD
1 stop8h 27mMultiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$244
This Delta deal was found by Cheapflights users on 2/22. 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 4/87:09 pmMDW - BIL
1 stop5h 02mDelta
Tue 4/156:21 amBIL - MDW
1 stop7h 01mDelta
Deal found 2/22![Delta logo]()
$249
This Delta deal was found by Cheapflights users on 2/22. 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 4/87:25 pmORD - BIL
1 stop5h 43mDelta
Tue 4/155:20 amBIL - ORD
1 stop6h 28mDelta
Deal found 2/22![Delta logo]()
$249
This Mytrip deal was found by Cheapflights users on 2/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/108:00 amORD - FCA
1 stop13h 58mMultiple Airlines
Sun 4/139:48 pmFCA - ORD
2 stops32h 52mMultiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$254
This Alaska Airlines deal was found by Cheapflights users on 2/22. 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.
Tue 4/86:44 amSTL - BZN
1 stop8h 15mAlaska Airlines
Tue 4/152:53 pmBZN - STL
1 stop8h 06mAlaska Airlines
Deal found 2/22![Alaska Airlines logo]()
$287
This Alaska Airlines deal was found by Cheapflights users on 2/21. 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 4/77:16 pmORD - FCA
1 stop17h 48mAlaska Airlines
Mon 4/143:44 pmFCA - ORD
1 stop13h 15mAlaska Airlines
Deal found 2/21![Alaska Airlines logo]()
$293
This United Airlines deal was found by Cheapflights users on 2/21. 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.
Wed 5/215:05 amORD - BIL
1 stop5h 34mUnited Airlines
Sat 5/245:00 amBIL - ORD
1 stop5h 40mUnited Airlines
Deal found 2/21![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 2/22. 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.
Wed 3/126:00 amSTL - BZN
1 stop7h 50mDelta
Wed 4/21:20 pmBZN - STL
1 stop6h 46mDelta
Deal found 2/22![Delta logo]()
$303
This United Airlines deal was found by Cheapflights users on 2/21. 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 3/79:15 amORD - BZN
Nonstop3h 32mUnited Airlines
Mon 3/108:23 amBZN - ORD
Nonstop3h 07mUnited Airlines
Deal found 2/21![United Airlines logo]()
$304
This Hawaiian Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 4/85:53 pmORD - FCA
1 stop6h 50mHawaiian Airlines
Tue 4/222:15 pmFCA - ORD
1 stop8h 44mHawaiian Airlines
Deal found 2/20![Hawaiian Airlines logo]()
$304
This Alaska Airlines deal was found by Cheapflights users on 2/21. 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.
Sat 9/62:00 pmORD - BZN
1 stop9h 35mAlaska Airlines
Sat 9/138:00 amBZN - ORD
1 stop8h 50mAlaska Airlines
Deal found 2/21![Alaska Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 2/21. 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.
Wed 3/1211:05 amSTL - BZN
2 stops11h 05mUnited Airlines
Wed 4/22:10 pmBZN - STL
1 stop6h 40mUnited Airlines
Deal found 2/21![United Airlines logo]()
$308
Find flights from Illinois to Montana within your budget
Customize your flight search to find flights from Illinois 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, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.
Fly from
Illinois
Fly to
Montana
Route
Depart
Return
Price
ChicagoMissoula
ORD - MSO
ORDMSO
Chicago O'Hare Intl
Mon 4/7
8:09 am-3:31 pm
1 stop8h 22m
Missoula Johnson-Bell Field
Fri 4/11
9:06 pm-6:33 am
1 stop8h 27m
$244
ChicagoBillings
MDW - BIL
MDWBIL
Chicago Midway
Tue 4/8
7:09 pm-11:11 pm
1 stop5h 02m
Billings Logan Intl
Tue 4/15
6:21 am-2:22 pm
1 stop7h 01m
$249
ChicagoBillings
ORD - BIL
ORDBIL
Chicago O'Hare Intl
Tue 4/8
7:25 pm-12:08 am
1 stop5h 43m
Billings Logan Intl
Tue 4/15
5:20 am-12:48 pm
1 stop6h 28m
$249
ChicagoKalispell
ORD - FCA
ORDFCA
Chicago O'Hare Intl
Thu 4/10
8:00 am-8:58 pm
1 stop13h 58m
Kalispell Glacier Park
Sun 4/13
9:48 pm-7:40 am
2 stops32h 52m
$254
St. LouisBozeman
STL - BZN
STLBZN
Lambert-St Louis
Tue 4/8
6:44 am-1:59 pm
1 stop8h 15m
Bozeman Gallatin Field
Tue 4/15
2:53 pm-11:59 pm
1 stop8h 06m
$287
ChicagoKalispell
ORD - FCA
ORDFCA
Chicago O'Hare Intl
Mon 4/7
7:16 pm-12:04 pm
1 stop17h 48m
Kalispell Glacier Park
Mon 4/14
3:44 pm-5:59 am
1 stop13h 15m
$293
ChicagoBillings
ORD - BIL
ORDBIL
Chicago O'Hare Intl
Wed 5/21
5:05 am-9:39 am
1 stop5h 34m
Billings Logan Intl
Sat 5/24
5:00 am-11:40 am
1 stop5h 40m
$299
St. LouisBozeman
STL - BZN
STLBZN
Lambert-St Louis
Wed 3/12
6:00 am-12:50 pm
1 stop7h 50m
Bozeman Gallatin Field
Wed 4/2
1:20 pm-9:06 pm
1 stop6h 46m
$303
ChicagoKalispell
ORD - FCA
ORDFCA
Chicago O'Hare Intl
Tue 4/8
5:53 pm-11:43 pm
1 stop6h 50m
Kalispell Glacier Park
Tue 4/22
2:15 pm-11:59 pm
1 stop8h 44m
$304
ChicagoBozeman
ORD - BZN
ORDBZN
Chicago O'Hare Intl
Fri 3/7
9:15 am-11:47 am
Nonstop3h 32m
Bozeman Gallatin Field
Mon 3/10
8:23 am-12:30 pm
Nonstop3h 07m
$304
Showing 1-10 of 60 results
Best time to book a flight from Illinois to Montana
Have a flexible travel schedule? Discover the best time to fly to Montana from Illinois 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.
Travel insights for flights from Illinois to Montana
Get recent, data-driven insights about flights from Illinois to Montana including ideal travel times, pricing trends, and more.
What is the cheapest month to book a flight from Illinois to Montana?
Currently, October is the cheapest month in which you can book a flight from Illinois to Montana (average of $371). Flying from Illinois to Montana in June is currently the most expensive (average of $520). 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 IL to MT?
Find hourly flight availability from Illinois to Montana. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 22, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Montana as you normally would.
Weekly flight availability from Illinois to Montana
Explore weekly flight availability from Illinois to Montana. 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 February 22, 2025.
The most flights from USIL to USMT are scheduled on a Wednesday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).
Rainfall in Montana by month
Plan your trip to Montana by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Montana ranges from 0.4 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. January is typically the driest time to visit Montana when rainfall is around 0.4 in.
Temperature in Montana by month
Plan your trip to Montana by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Montana, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).
Reviews of airlines servicing Montana
Get insights into the airlines that provide service to Montana. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Montana. Reviews last updated February 22, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Illinois to Montana have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.1
Crew
8.7
Entertainment
7.6
Boarding
8.2
Food
7.1
Comfort
8.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Overall
8.1
Crew
8.7
Entertainment
7.6
Boarding
8.2
Food
7.1
Comfort
8.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Overall
8.1
Crew
8.7
Entertainment
7.6
Boarding
8.2
Food
7.1
Comfort
8.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Overall
8.1
Crew
8.7
Entertainment
7.6
Boarding
8.2
Food
7.1
Comfort
8.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Overall
8.1
Crew
8.7
Entertainment
7.6
Boarding
8.2
Food
7.1
Comfort
8.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Overall
8.1
Crew
8.7
Entertainment
7.6
Boarding
8.2
Food
7.1
Comfort
8.1
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Related info for your journey
Find useful and relevant information for your journey from Illinois to Montana. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Illinois to Montana
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Illinois to Montana
Discover the top 6 airlines that operate flights from Illinois to Montana. 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 February 22, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$175 | Average$245 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$182 | Average$471 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$239 | Average$563 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$248 | Average$534 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$267 | Average$511 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$296 | Average$475 | FlexibilityNo cancel fee | On-time63% |