Cheap flights from Chicago to South Central Montana from CA $131

View CA $131 flight on Wed, Oct. 15, 2025Opens in a new window

Popular airlines from Chicago to South Central Montana

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • American Airlines

    American Airlines

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap flights from Chicago (CHI) to South Central Montana (BIL)

Prices were available within the past 7 days and start at CA $131 for one-way flights and CA $260 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Aug. 16 - Mon, Aug. 25
ORD
Chicago
BZN
Bozeman
CA $260 Roundtrip, found 4 days ago
CA $260
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Aug. 16 from Chicago to Bozeman, returning Mon, Aug. 25, priced at CA $260 found 4 days ago
American Airlines
Mon, Sep. 15 - Fri, Sep. 26
ORD
Chicago
BZN
Bozeman
CA $262 Roundtrip, found 17 hours ago
CA $262
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Mon, Sep. 15 from Chicago to Bozeman, returning Fri, Sep. 26, priced at CA $262 found 17 hours ago
Alaska Airlines
Sun, Oct. 26 - Tue, Nov. 4
ORD
Chicago
BZN
Bozeman
CA $287 Roundtrip, found 4 days ago
CA $287
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sun, Oct. 26 from Chicago to Bozeman, returning Tue, Nov. 4, priced at CA $287 found 4 days ago
Delta
Sat, Aug. 16 - Mon, Aug. 25
ORD
Chicago
BZN
Bozeman
CA $294 Roundtrip, found 4 days ago
CA $294
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Aug. 16 from Chicago to Bozeman, returning Mon, Aug. 25, priced at CA $294 found 4 days ago
United
Tue, Aug. 19 - Fri, Aug. 29
ORD
Chicago
BIL
Billings
CA $436 Roundtrip, found 5 days ago
CA $436
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug. 19 from Chicago to Billings, returning Fri, Aug. 29, priced at CA $436 found 5 days ago
Hawaiian Airlines
Mon, Aug. 4 - Tue, Aug. 26
ORD
Chicago
HLN
Helena
CA $976 Roundtrip, found 4 days ago
CA $976
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Mon, Aug. 4 from Chicago to Helena, returning Tue, Aug. 26, priced at CA $976 found 4 days ago

Find the cheapest month to fly from Chicago (CHI) to Bozeman (BZN)

August is typically the cheapest month to fly

From CA $231 - CA $837 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.