$99+ Cheap flights from Idaho 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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BZN
Aug 27 — Sep 31
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Idaho 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 Idaho to Montana
Cheapest
Best
Last-minute
One-way
Cheapest flights from Idaho to MontanaExplore the most affordable flight options available from Idaho to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.
Explore the most affordable flight options available from Idaho to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.
This Priceline deal was found by Cheapflights users on 7/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/132:08 pm
BOI
- BZN
Nonstop1h 06m
Alaska Airlines
Mon 11/162:54 pm
BZN
- BOI
Nonstop1h 14m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$177
This Delta deal was found by Cheapflights users on 7/23. 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.
Thu 8/276:45 pm
BOI
- BZN
1 stop5h 19m
Delta
Mon 8/316:00 am
BZN
- BOI
1 stop3h 48m
Delta
Deal found 7/23![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 7/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:30 am
BOI
- BZN
1 stop8h 20m
Southwest
Tue 9/16:55 am
BZN
- BOI
2 stops9h 15m
Southwest
Deal found 7/26![Southwest logo]()
$202
This Delta deal was found by Cheapflights users on 7/26. 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.
Fri 8/281:06 pm
BOI
- BZN
1 stop5h 39m
Delta
Tue 9/16:00 am
BZN
- BOI
1 stop3h 48m
Delta
Deal found 7/26![Delta logo]()
$207
This Southwest deal was found by Cheapflights users on 7/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1711:25 am
BOI
- BZN
1 stop10h 15m
Southwest
Tue 10/208:05 am
BZN
- BOI
2 stops10h 20m
Southwest
Deal found 7/23![Southwest logo]()
$208
This Southwest deal was found by Cheapflights users on 7/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:30 am
BOI
- BZN
1 stop8h 20m
Southwest
Fri 8/282:30 pm
BZN
- BOI
1 stop6h 10m
Southwest
Deal found 7/24![Southwest logo]()
$217
This Southwest deal was found by Cheapflights users on 7/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:50 pm
BOI
- BZN
1 stop7h 50m
Southwest
Thu 8/273:30 pm
BZN
- BOI
2 stops8h 05m
Southwest
Deal found 7/23![Southwest logo]()
$222
This Delta deal was found by Cheapflights users on 7/26. 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.
Mon 8/246:45 pm
BOI
- BZN
1 stop5h 19m
Delta
Mon 8/316:00 am
BZN
- BOI
1 stop3h 48m
Delta
Deal found 7/26![Delta logo]()
$227
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/252:25 pm
BOI
- BZN
1 stop8h 00m
Southwest
Tue 9/16:55 am
BZN
- BOI
2 stops9h 15m
Southwest
Deal found 7/27![Southwest logo]()
$228
This Southwest deal was found by Cheapflights users on 7/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:30 am
BOI
- BZN
1 stop8h 20m
Southwest
Thu 8/205:05 pm
BZN
- BOI
1 stop6h 30m
Southwest
Deal found 7/24![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 7/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:55 pm
BOI
- BZN
2 stops8h 45m
Southwest
Fri 8/283:30 pm
BZN
- BOI
2 stops8h 05m
Southwest
Deal found 7/24![Southwest logo]()
$247
This Delta deal was found by Cheapflights users on 7/27. 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 8/254:20 pm
GEG
- BZN
1 stop5h 22m
Delta
Tue 9/13:49 pm
BZN
- GEG
1 stop6h 27m
Delta
Deal found 7/27![Delta logo]()
$295
Best flights from Idaho to MontanaDiscover carefully curated flight deals from Idaho to Montana that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2026.
Discover carefully curated flight deals from Idaho to Montana that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2026.
This Delta deal was found by Cheapflights users on 7/23. 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 9/96:44 pm
BOI
- BZN
1 stop5h 35m
Delta
Fri 9/186:00 am
BZN
- BOI
1 stop4h 17m
Delta
Deal found 7/23![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 7/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:50 pm
BOI
- BZN
1 stop7h 30m
Southwest
Wed 10/146:30 am
BZN
- BOI
1 stop5h 45m
Southwest
Deal found 7/26![Southwest logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
Sun 10/252:09 pm
BOI
- BZN
Nonstop1h 06m
Alaska Airlines
Thu 10/292:55 pm
BZN
- BOI
Nonstop1h 12m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$282
This United Airlines deal was found by Cheapflights users on 7/27. 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 9/42:44 pm
BOI
- BIL
1 stop6h 16m
United Airlines
Sun 9/65:07 am
BIL
- BOI
1 stop4h 28m
United Airlines
Deal found 7/27![United Airlines logo]()
$395
This Southwest deal was found by Cheapflights users on 7/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:30 am
BOI
- BZN
1 stop8h 20m
Southwest
Tue 9/16:55 am
BZN
- BOI
2 stops9h 15m
Southwest
Deal found 7/26![Southwest logo]()
$202
This Southwest deal was found by Cheapflights users on 7/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1711:25 am
BOI
- BZN
1 stop10h 15m
Southwest
Tue 10/208:05 am
BZN
- BOI
2 stops10h 20m
Southwest
Deal found 7/23![Southwest logo]()
$208
This Southwest deal was found by Cheapflights users on 7/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:30 am
BOI
- BZN
1 stop8h 20m
Southwest
Fri 8/282:30 pm
BZN
- BOI
1 stop6h 10m
Southwest
Deal found 7/24![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 7/27. 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 8/254:20 pm
GEG
- BZN
1 stop5h 22m
Delta
Tue 9/13:49 pm
BZN
- GEG
1 stop6h 27m
Delta
Deal found 7/27![Delta logo]()
$295
This Southwest deal was found by Cheapflights users on 7/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:50 pm
BOI
- BZN
1 stop7h 50m
Southwest
Thu 8/273:30 pm
BZN
- BOI
2 stops8h 05m
Southwest
Deal found 7/23![Southwest logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1011:52 am
GEG
- FCA
1 stop7h 27m
Multiple Airlines
Fri 8/1410:30 am
FCA
- GEG
2 stops54h 26m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$629
This Southwest deal was found by Cheapflights users on 7/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:50 pm
BOI
- BZN
1 stop7h 50m
Southwest
Fri 8/282:30 pm
BZN
- BOI
1 stop6h 10m
Southwest
Deal found 7/24![Southwest logo]()
$242
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 8/296:23 am
BOI
- MSO
1 stop16h 36m
Alaska Airlines
Wed 9/27:15 am
MSO
- BOI
1 stop8h 16m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$363
This Southwest deal was found by Cheapflights users on 7/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:30 am
BOI
- BZN
1 stop8h 20m
Southwest
Thu 8/203:30 pm
BZN
- BOI
2 stops8h 05m
Southwest
Deal found 7/24![Southwest logo]()
$242
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 11/145:00 am
GEG
- BIL
1 stop10h 32m
Alaska Airlines
Wed 11/186:00 am
BIL
- GEG
1 stop9h 22m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 7/27. 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 9/226:44 pm
BOI
- FCA
1 stop4h 10m
Delta
Sat 9/265:30 am
FCA
- BOI
1 stop4h 21m
Delta
Deal found 7/27![Delta logo]()
$381
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 10/246:43 am
BOI
- FCA
1 stop5h 40m
Alaska Airlines
Wed 10/281:03 pm
FCA
- BOI
1 stop4h 04m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$381
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Mon 8/175:44 pm
BOI
- BIL
1 stop4h 23m
United Airlines
Thu 8/205:07 am
BIL
- BOI
1 stop4h 28m
United Airlines
Deal found 7/23![United Airlines logo]()
$475
This Delta deal was found by Cheapflights users on 7/25. 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.
Sun 12/205:45 pm
BOI
- BIL
1 stop4h 47m
Delta
Sun 12/275:45 am
BIL
- BOI
1 stop4h 34m
Delta
Deal found 7/25![Delta logo]()
$395
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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 10/39:12 am
BOI
- FCA
1 stop4h 11m
Alaska Airlines
Wed 10/72:03 pm
FCA
- BOI
1 stop4h 14m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$381
This Southwest deal was found by Cheapflights users on 7/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:10 pm
GEG
- BZN
1 stop5h 30m
Southwest
Wed 8/266:55 am
BZN
- GEG
1 stop5h 55m
Southwest
Deal found 7/26![Southwest logo]()
$295
This Delta deal was found by Cheapflights users on 7/23. 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.
Sat 8/229:52 am
GEG
- BIL
1 stop6h 52m
Delta
Sat 8/296:24 pm
BIL
- GEG
1 stop5h 07m
Delta
Deal found 7/23![Delta logo]()
$395
This Delta deal was found by Cheapflights users on 7/23. 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.
Fri 9/255:14 pm
GEG
- BIL
1 stop4h 20m
Delta
Sun 9/275:20 am
BIL
- GEG
1 stop4h 41m
Delta
Deal found 7/23![Delta logo]()
$395
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 10/2410:27 am
GEG
- GTF
1 stop5h 08m
Alaska Airlines
Tue 10/275:15 pm
GTF
- GEG
1 stop7h 40m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$396
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:30 am
GEG
- BZN
2 stops11h 30m
Southwest
Thu 9/35:05 pm
BZN
- GEG
1 stop7h 15m
Southwest
Deal found 7/27![Southwest logo]()
$300
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Wed 11/257:36 pm
GEG
- BZN
1 stop13h 03m
Alaska Airlines
Thu 12/37:25 pm
BZN
- GEG
1 stop5h 53m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:30 am
GEG
- BZN
2 stops11h 30m
Southwest
Tue 9/12:00 pm
BZN
- GEG
2 stops9h 05m
Southwest
Deal found 7/27![Southwest logo]()
$305
This Delta deal was found by Cheapflights users on 7/24. 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.
Thu 9/246:44 pm
BOI
- BIL
1 stop3h 50m
Delta
Sun 9/275:20 am
BIL
- BOI
1 stop4h 31m
Delta
Deal found 7/24![Delta logo]()
$415
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Tue 11/106:30 am
BOI
- COD
1 stop15h 44m
United Airlines
Sat 11/142:01 pm
COD
- BOI
2 stops26h 41m
United Airlines
Deal found 7/24![United Airlines logo]()
$639
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
Sun 11/17:38 pm
GEG
- BZN
2 stops18h 36m
Alaska Airlines
Thu 11/510:27 am
BZN
- GEG
1 stop4h 55m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 7/25. 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.
Sat 8/221:06 pm
BOI
- BIL
1 stop4h 38m
Delta
Sat 8/296:24 pm
BIL
- BOI
1 stop4h 22m
Delta
Deal found 7/25![Delta logo]()
$435
Last-minute flights from Idaho to MontanaDiscover last-minute flight deals from Idaho to Montana. Data last updated July 28, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Montana. Data last updated July 28, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 7/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:30 am
BOI
- BZN
1 stop8h 20m
Southwest
Fri 8/282:30 pm
BZN
- BOI
1 stop6h 10m
Southwest
Deal found 7/24![Southwest logo]()
$217
This Southwest deal was found by Cheapflights users on 7/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:30 am
BOI
- BZN
1 stop8h 20m
Southwest
Thu 8/205:05 pm
BZN
- BOI
1 stop6h 30m
Southwest
Deal found 7/24![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 7/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:50 pm
BOI
- BZN
1 stop7h 50m
Southwest
Thu 8/273:30 pm
BZN
- BOI
2 stops8h 05m
Southwest
Deal found 7/23![Southwest logo]()
$222
This Southwest deal was found by Cheapflights users on 7/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:55 pm
BOI
- BZN
2 stops8h 45m
Southwest
Fri 8/283:30 pm
BZN
- BOI
2 stops8h 05m
Southwest
Deal found 7/24![Southwest logo]()
$247
This Southwest deal was found by Cheapflights users on 7/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:10 pm
GEG
- BZN
1 stop5h 30m
Southwest
Wed 8/266:55 am
BZN
- GEG
2 stops10h 20m
Southwest
Deal found 7/26![Southwest logo]()
$300
This Delta deal was found by Cheapflights users on 7/26. 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.
Mon 8/246:45 pm
BOI
- BZN
1 stop5h 19m
Delta
Mon 8/316:00 am
BZN
- BOI
1 stop3h 48m
Delta
Deal found 7/26![Delta logo]()
$227
This Southwest deal was found by Cheapflights users on 7/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:30 am
BOI
- BZN
1 stop8h 20m
Southwest
Mon 8/315:05 pm
BZN
- BOI
1 stop6h 30m
Southwest
Deal found 7/26![Southwest logo]()
$262
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/252:25 pm
BOI
- BZN
1 stop8h 00m
Southwest
Tue 9/16:55 am
BZN
- BOI
2 stops9h 15m
Southwest
Deal found 7/27![Southwest logo]()
$228
This Delta deal was found by Cheapflights users on 7/27. 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 8/254:20 pm
GEG
- BZN
1 stop5h 22m
Delta
Tue 9/13:49 pm
BZN
- GEG
1 stop6h 27m
Delta
Deal found 7/27![Delta logo]()
$295
This Delta deal was found by Cheapflights users on 7/23. 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.
Thu 8/276:45 pm
BOI
- BZN
1 stop5h 19m
Delta
Mon 8/316:00 am
BZN
- BOI
1 stop3h 48m
Delta
Deal found 7/23![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 7/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:30 am
BOI
- BZN
1 stop8h 20m
Southwest
Tue 9/16:55 am
BZN
- BOI
2 stops9h 15m
Southwest
Deal found 7/26![Southwest logo]()
$202
This Delta deal was found by Cheapflights users on 7/26. 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.
Fri 8/281:06 pm
BOI
- BZN
1 stop5h 39m
Delta
Tue 9/16:00 am
BZN
- BOI
1 stop3h 48m
Delta
Deal found 7/26![Delta logo]()
$207
One-way flights from Idaho to MontanaSearch for one-way flight options from Idaho to Montana. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
Search for one-way flight options from Idaho to Montana. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
This Southwest deal was found by Cheapflights users on 7/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:50 pm
BOI
- BZN
1 stop7h 30m
Southwest
Deal found 7/23![Southwest logo]()
$99
This Delta deal was found by Cheapflights users on 7/24. 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 9/156:44 pm
BOI
- BZN
1 stop5h 35m
Delta
Deal found 7/24![Delta logo]()
$134
This Delta deal was found by Cheapflights users on 7/23. 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 12/156:20 am
GEG
- BZN
1 stop7h 13m
Delta
Deal found 7/23![Delta logo]()
$144
This Southwest deal was found by Cheapflights users on 7/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1510:55 am
GEG
- BZN
2 stops9h 30m
Southwest
Deal found 7/23![Southwest logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:12 am
GEG
- MSO
1 stop9h 50m
Allegiant Air
Deal found 7/27![Allegiant Air logo]()
$169
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:10 pm
GEG
- BZN
1 stop5h 30m
Southwest
Deal found 7/27![Southwest logo]()
$173
This Expedia deal was found by Cheapflights users on 7/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/151:30 pm
BOI
- BZN
2 stops9h 29m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2310:12 am
GEG
- FCA
1 stop27h 37m
Allegiant Air
Deal found 7/27![Allegiant Air logo]()
$177
This Delta deal was found by Cheapflights users on 7/25. 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.
Sat 8/85:15 pm
BOI
- BZN
1 stop4h 48m
Delta
Deal found 7/25![Delta logo]()
$189
This Priceline deal was found by Cheapflights users on 7/23. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:00 am
BOI
- FCA
1 stop4h 28m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$191
This Delta deal was found by Cheapflights users on 7/26. 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.
Sat 9/191:06 pm
BOI
- MSO
1 stop4h 31m
Delta
Deal found 7/26![Delta logo]()
$191
This Expedia deal was found by Cheapflights users on 7/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/92:09 pm
BOI
- BZN
Nonstop1h 06m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$194
Find flight deals from Idaho to Montana
Keep the following information in mind while searching for Idaho to Montana flight deals. Data was last updated July 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $177 (Priceline) |
One-way from | $99 (Southwest) |
Popular in | August |
Cheapest in | January |
Average price | $388 |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho 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 July 28, 2026.
Use the filters below to find and compare flights from Idaho to Montana that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseBozeman
BOI - BZN
BOIBZN
Boise Air Term. Gowen Fld
Wed 9/9
6:44 pm-12:19 am
1 stop5h 35m
Bozeman Gallatin Field
Fri 9/18
6:00 am-10:17 am
1 stop4h 17m
$197
BoiseBozeman
BOI - BZN
BOIBZN
Boise Air Term. Gowen Fld
Fri 10/9
3:50 pm-11:20 pm
1 stop7h 30m
Bozeman Gallatin Field
Wed 10/14
6:30 am-12:15 pm
1 stop5h 45m
$197
BoiseBozeman
BOI - BZN
BOIBZN
Boise Air Term. Gowen Fld
Fri 8/28
6:30 am-2:50 pm
1 stop8h 20m
Bozeman Gallatin Field
Tue 9/1
6:55 am-4:10 pm
2 stops9h 15m
$202
BoiseBozeman
BOI - BZN
BOIBZN
Boise Air Term. Gowen Fld
Sat 10/17
11:25 am-9:40 pm
1 stop10h 15m
Bozeman Gallatin Field
Tue 10/20
8:05 am-6:25 pm
2 stops10h 20m
$208
BoiseBozeman
BOI - BZN
BOIBZN
Boise Air Term. Gowen Fld
Mon 8/17
6:30 am-2:50 pm
1 stop8h 20m
Bozeman Gallatin Field
Fri 8/28
2:30 pm-8:40 pm
1 stop6h 10m
$217
BoiseBozeman
BOI - BZN
BOIBZN
Boise Air Term. Gowen Fld
Thu 8/20
3:50 pm-11:40 pm
1 stop7h 50m
Bozeman Gallatin Field
Thu 8/27
3:30 pm-11:35 pm
2 stops8h 05m
$222
BoiseBozeman
BOI - BZN
BOIBZN
Boise Air Term. Gowen Fld
Thu 8/20
3:50 pm-11:40 pm
1 stop7h 50m
Bozeman Gallatin Field
Fri 8/28
2:30 pm-8:40 pm
1 stop6h 10m
$242
BoiseBozeman
BOI - BZN
BOIBZN
Boise Air Term. Gowen Fld
Mon 8/17
6:30 am-2:50 pm
1 stop8h 20m
Bozeman Gallatin Field
Thu 8/20
3:30 pm-11:35 pm
2 stops8h 05m
$242
Quickest round-trip
BoiseBozeman
BOI - BZN
BOIBZN
Boise Air Term. Gowen Fld
Sun 10/25
2:09 pm-3:15 pm
Nonstop1h 06m
Bozeman Gallatin Field
Thu 10/29
2:55 pm-4:07 pm
Nonstop1h 12m
$282
SpokaneBozeman
GEG - BZN
GEGBZN
Spokane
Tue 8/25
4:20 pm-10:42 pm
1 stop5h 22m
Bozeman Gallatin Field
Tue 9/1
3:49 pm-9:16 pm
1 stop6h 27m
$295
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Idaho to Montana
Have a flexible travel schedule? Discover the best time to fly to Montana from Idaho with our price prediction graph.
BOI-BZN
GEG-BZN
GEG-MSO
GEG-FCA
BOI-FCA
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.
Cheapflights Insights
Everything you need to know about your flight from Idaho to Montana
USID-USMT
BOI-BZN
GEG-BZN
GEG-MSO
GEG-FCA
What is the cheapest month to book a flight from Idaho to Montana?
Currently, January is the cheapest month in which you can book a flight from Idaho to Montana (average of $167). Flying from Idaho to Montana in September is currently the most expensive (average of $613). 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.
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 July 28, 2026.
See what other customers who have flown with Alaska Airlines and Delta from Idaho to Montana have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Entertainment
7.0
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Entertainment
7.0
Crew
8.5
Boarding
8.1
Overall
7.9
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Related info for your journey
Find useful and relevant information for your journey from Idaho to Montana. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
Alternative routes for Idaho to Montana
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Montana by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho to Montana by cabin class
Find flights from Idaho to Montana, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and Montana flights
Browse other Idaho and Montana flight options. Last updated on July 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Montana
Find the right flight back to Idaho after your stay in Montana
Idaho to Montana flights
Consider these flights traveling from Idaho to Montana.
Top 2 airlines flying from Idaho to Montana
Discover the top 2 airlines that operate flights from Idaho 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 July 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$383 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$99 | Average$437 | FlexibilityNo cancel fee | On-time75% |