$128+ Cheap flights from Montana to Idaho
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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — BOI
Sep 20 — Sep 271
Round-trip
1 adult, Economy
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Cheapest flights from Montana to IdahoExplore the most affordable flight options available from Montana to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2026.
Explore the most affordable flight options available from Montana to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 21, 2026.
This Priceline deal was found by Cheapflights users on 8/18. 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 10/92:55 pm -
Nonstop1h 12m
Sun 10/112:09 pm -
Nonstop1h 06m
Deal found 8/18![Alaska Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 8/16. 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 9/182:30 pm -
1 stop6h 15m
Mon 9/216:30 am -
1 stop8h 20m
Deal found 8/16![Southwest logo]()
$217
This Priceline deal was found by Cheapflights users on 8/18. 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.
Thu 10/82:55 pm -
Nonstop1h 12m
Sun 10/112:09 pm -
Nonstop1h 06m
Deal found 8/18![Alaska Airlines logo]()
$222
This Delta deal was found by Cheapflights users on 8/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/95:30 am -
1 stop5h 12m
Sun 10/118:49 am -
1 stop3h 18m
Deal found 8/20![Delta logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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.
Fri 10/302:55 pm -
Nonstop1h 12m
Tue 11/310:41 am -
2 stops12h 11m
Deal found 8/18![Alaska Airlines logo]()
$230
This Southwest deal was found by Cheapflights users on 8/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:05 pm -
1 stop6h 35m
Sun 9/276:30 am -
1 stop4h 55m
Deal found 8/20![Southwest logo]()
$242
This Southwest deal was found by Cheapflights users on 8/17. 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.
Wed 10/2111:25 am -
2 stops10h 05m
Sat 10/2411:25 am -
2 stops9h 20m
Deal found 8/17![Southwest logo]()
$253
This Expedia deal was found by Cheapflights users on 8/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:58 pm -
1 stop4h 51m
Sun 11/152:08 pm -
Nonstop1h 06m
Deal found 8/20![Alaska Airlines logo]()
$254
This Southwest deal was found by Cheapflights users on 8/17. 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 9/112:30 pm -
1 stop6h 15m
Sat 9/123:10 pm -
1 stop5h 00m
Deal found 8/17![Southwest logo]()
$264
This Southwest deal was found by Cheapflights users on 8/16. 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 9/255:05 pm -
1 stop7h 15m
Sun 9/276:35 am -
1 stop6h 00m
Deal found 8/16![Southwest logo]()
$344
This Southwest deal was found by Cheapflights users on 8/19. 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 11/215:25 am -
2 stops11h 00m
Fri 11/275:25 am -
1 stop9h 00m
Deal found 8/19![Southwest logo]()
$355
This Priceline deal was found by Cheapflights users on 8/17. 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.
Tue 9/224:16 pm -
1 stop4h 19m
Wed 9/234:20 pm -
1 stop6h 41m
Deal found 8/17![Alaska Airlines logo]()
$365
Best flights from Montana to IdahoDiscover carefully curated flight deals from Montana to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2026.
Discover carefully curated flight deals from Montana to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 21, 2026.
This Delta deal was found by Cheapflights users on 8/16. 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 12/35:30 am -
1 stop5h 10m
Sun 12/66:50 pm -
1 stop5h 19m
Deal found 8/16![Delta logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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.
Fri 10/302:55 pm -
Nonstop1h 12m
Tue 11/310:41 am -
2 stops12h 11m
Deal found 8/18![Alaska Airlines logo]()
$230
This Southwest deal was found by Cheapflights users on 8/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:05 pm -
1 stop6h 35m
Sun 9/276:30 am -
1 stop4h 55m
Deal found 8/20![Southwest logo]()
$242
This Delta deal was found by Cheapflights users on 8/19. 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 11/65:30 am -
1 stop5h 12m
Sun 11/86:00 am -
1 stop6h 07m
Deal found 8/19![Delta logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 8/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:24 am -
2 stops14h 37m
Tue 11/310:41 am -
2 stops12h 11m
Deal found 8/20![Alaska Airlines logo]()
$253
This Delta deal was found by Cheapflights users on 8/18. 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 10/85:30 am -
1 stop5h 12m
Sun 10/116:49 pm -
1 stop5h 38m
Deal found 8/18![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 8/16. 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 9/182:30 pm -
1 stop6h 15m
Sat 9/192:25 pm -
1 stop6h 55m
Deal found 8/16![Southwest logo]()
$281
This Alaska Airlines deal was found by Cheapflights users on 8/16. 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.
Fri 10/22:21 pm -
1 stop19h 35m
Sun 10/42:09 pm -
Nonstop1h 06m
Deal found 8/16![Alaska Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 8/16. 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 12/38:05 am -
1 stop7h 05m
Sun 12/66:00 am -
2 stops9h 25m
Deal found 8/16![Southwest logo]()
$316
This Delta deal was found by Cheapflights users on 8/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:00 am -
1 stop3h 51m
Tue 10/611:32 am -
1 stop6h 19m
Deal found 8/20![Delta logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 8/19. 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.
Fri 11/66:58 pm -
1 stop4h 51m
Sun 11/82:08 pm -
Nonstop1h 06m
Deal found 8/19![Alaska Airlines logo]()
$322
This Southwest deal was found by Cheapflights users on 8/16. 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 9/257:20 am -
2 stops8h 40m
Sun 9/271:00 pm -
2 stops10h 45m
Deal found 8/16![Southwest logo]()
$354
This Delta deal was found by Cheapflights users on 8/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:33 am -
1 stop5h 07m
Wed 11/116:00 am -
1 stop6h 44m
Deal found 8/21![Delta logo]()
$385
This Alaska Airlines deal was found by Cheapflights users on 8/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/91:02 pm -
1 stop4h 02m
Wed 11/118:59 pm -
1 stop15h 23m
Deal found 8/20![Alaska Airlines logo]()
$385
This Southwest deal was found by Cheapflights users on 8/18. 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 9/111:35 pm -
1 stop9h 30m
Sun 9/131:00 pm -
2 stops10h 45m
Deal found 8/18![Southwest logo]()
$387
This Alaska Airlines deal was found by Cheapflights users on 8/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/53:44 pm -
1 stop3h 56m
Wed 12/98:03 am -
1 stop4h 20m
Deal found 8/20![Alaska Airlines logo]()
$385
This Delta deal was found by Cheapflights users on 8/16. 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 9/175:30 am -
1 stop4h 47m
Sat 9/195:20 pm -
1 stop5h 53m
Deal found 8/16![Delta logo]()
$405
This Alaska Airlines deal was found by Cheapflights users on 8/19. 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 11/143:32 pm -
1 stop4h 12m
Wed 11/188:22 am -
1 stop5h 30m
Deal found 8/19![Alaska Airlines logo]()
$385
This Delta deal was found by Cheapflights users on 8/18. 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 10/85:30 am -
1 stop5h 12m
Sun 10/118:49 am -
1 stop3h 45m
Deal found 8/18![Delta logo]()
$405
This Expedia deal was found by Cheapflights users on 8/16. 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.
Wed 11/185:12 pm -
1 stop6h 37m
Mon 11/234:17 pm -
1 stop7h 35m
Deal found 8/16![Alaska Airlines logo]()
$385
This Alaska Airlines deal was found by Cheapflights users on 8/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:41 am -
1 stop7h 42m
Wed 10/286:43 am -
1 stop4h 42m
Deal found 8/20![Alaska Airlines logo]()
$385
This Alaska Airlines deal was found by Cheapflights users on 8/17. 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 10/317:41 am -
1 stop6h 30m
Wed 11/49:03 am -
1 stop5h 49m
Deal found 8/17![Alaska Airlines logo]()
$385
This Delta deal was found by Cheapflights users on 8/18. 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 9/216:33 pm -
2 stops6h 26m
Wed 9/235:14 pm -
1 stop4h 20m
Deal found 8/18![Delta logo]()
$484
This Alaska Airlines deal was found by Cheapflights users on 8/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:55 pm -
1 stop17h 48m
Sat 10/311:55 pm -
1 stop25h 19m
Deal found 8/20![Alaska Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 8/17. 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 9/261:17 pm -
1 stop3h 33m
Wed 9/305:55 pm -
1 stop6h 23m
Deal found 8/17![Delta logo]()
$527
This Alaska Airlines deal was found by Cheapflights users on 8/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/34:13 pm -
1 stop6h 34m
Sat 12/59:53 am -
1 stop5h 30m
Deal found 8/20![Alaska Airlines logo]()
$405
This Expedia deal was found by Cheapflights users on 8/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:41 am -
1 stop7h 42m
Sat 10/245:59 am -
1 stop9h 05m
Deal found 8/20![Alaska Airlines logo]()
$405
This Delta deal was found by Cheapflights users on 8/17. 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 9/25:40 am -
1 stop4h 08m
Sun 9/65:15 pm -
1 stop5h 14m
Deal found 8/17![Delta logo]()
$574
This Alaska Airlines deal was found by Cheapflights users on 8/17. 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 9/156:14 am -
2 stops11h 55m
Tue 9/229:00 am -
1 stop6h 02m
Deal found 8/17![Alaska Airlines logo]()
$411
This Expedia deal was found by Cheapflights users on 8/18. 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 10/97:32 pm -
1 stop14h 24m
Sun 10/116:04 pm -
1 stop5h 46m
Deal found 8/18![Alaska Airlines logo]()
$419
Last-minute flights from Montana to IdahoDiscover last-minute flight deals from Montana to Idaho. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Montana to Idaho. Data last updated August 21, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/16. 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 9/36:00 am -
1 stop3h 48m
Mon 9/78:45 am -
1 stop6h 24m
Deal found 8/16![Delta logo]()
$302
This Southwest deal was found by Cheapflights users on 8/17. 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 9/112:30 pm -
1 stop6h 15m
Sat 9/123:10 pm -
1 stop5h 00m
Deal found 8/17![Southwest logo]()
$264
This Delta deal was found by Cheapflights users on 8/16. 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 9/146:00 am -
1 stop4h 17m
Mon 9/216:44 pm -
1 stop5h 35m
Deal found 8/16![Delta logo]()
$293
This United Airlines deal was found by Cheapflights users on 8/16. 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 9/155:00 am -
1 stop4h 35m
Tue 9/225:00 am -
1 stop4h 41m
Deal found 8/16![United Airlines logo]()
$365
This Southwest deal was found by Cheapflights users on 8/16. 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 9/175:15 pm -
1 stop6h 25m
Sun 9/206:30 am -
1 stop4h 55m
Deal found 8/16![Southwest logo]()
$272
This Southwest deal was found by Cheapflights users on 8/16. 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 9/182:30 pm -
1 stop6h 15m
Mon 9/216:30 am -
1 stop8h 20m
Deal found 8/16![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 8/16. 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 9/186:00 am -
1 stop4h 17m
Sat 9/195:20 pm -
1 stop5h 11m
Deal found 8/16![Delta logo]()
$227
This Southwest deal was found by Cheapflights users on 8/16. 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 9/182:30 pm -
1 stop6h 15m
Sat 9/192:25 pm -
1 stop6h 55m
Deal found 8/16![Southwest logo]()
$281
This Delta deal was found by Cheapflights users on 8/19. 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 9/205:30 am -
1 stop4h 47m
Tue 9/2911:03 am -
1 stop6h 34m
Deal found 8/19![Delta logo]()
$385
This Priceline deal was found by Cheapflights users on 8/17. 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.
Tue 9/224:16 pm -
1 stop4h 19m
Wed 9/234:20 pm -
1 stop6h 41m
Deal found 8/17![Alaska Airlines logo]()
$365
This Southwest deal was found by Cheapflights users on 8/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:05 pm -
1 stop6h 35m
Sun 9/276:30 am -
1 stop4h 55m
Deal found 8/20![Southwest logo]()
$242
This Southwest deal was found by Cheapflights users on 8/16. 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 9/255:05 pm -
1 stop7h 15m
Sun 9/276:35 am -
1 stop6h 00m
Deal found 8/16![Southwest logo]()
$344
One-way flights from Montana to IdahoSearch for one-way flight options from Montana to Idaho. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
Search for one-way flight options from Montana to Idaho. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:42 pm -
1 stop16h 13m
Deal found 8/20![Multiple Airlines logo]()
$128
This Southwest deal was found by Cheapflights users on 8/18. 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.
Wed 9/306:55 am -
1 stop5h 55m
Deal found 8/18![Southwest logo]()
$129
This Priceline deal was found by Cheapflights users on 8/17. 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.
Mon 12/72:52 pm -
Nonstop1h 07m
Deal found 8/17![Alaska Airlines logo]()
$129
This Delta deal was found by Cheapflights users on 8/19. 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 9/186:00 am -
1 stop4h 17m
Deal found 8/19![Delta logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/139:42 pm -
1 stop16h 13m
Deal found 8/19![Multiple Airlines logo]()
$146
This Southwest deal was found by Cheapflights users on 8/17. 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 12/78:05 am -
1 stop7h 05m
Deal found 8/17![Southwest logo]()
$154
This Southwest deal was found by Cheapflights users on 8/17. 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 9/226:55 am -
2 stops9h 15m
Deal found 8/17![Southwest logo]()
$159
This Priceline deal was found by Cheapflights users on 8/19. 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.
Sat 9/197:03 am -
1 stop5h 32m
Deal found 8/19![Alaska Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 11/112:36 pm -
2 stops24h 04m
Deal found 8/19![Multiple Airlines logo]()
$176
This Southwest deal was found by Cheapflights users on 8/16. 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 8/317:20 am -
2 stops7h 45m
Deal found 8/16![Southwest logo]()
$178
This Priceline deal was found by Cheapflights users on 8/17. 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.
Tue 10/137:03 am -
1 stop5h 32m
Deal found 8/17![Alaska Airlines logo]()
$183
This Priceline deal was found by Cheapflights users on 8/16. 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.
Sun 8/307:03 am -
1 stop7h 19m
Deal found 8/16![Alaska Airlines logo]()
$199
Find flight deals from Montana to Idaho
Keep the following information in mind while searching for Montana to Idaho flight deals. Data was last updated August 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (Priceline) |
One-way from | $128 (Kiwi.com) |
Popular in | June |
Cheapest in | March |
Average price | $360 |
Good one-way deal | $134 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Montana to Idaho 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 7,457,451 searches. Data last updated August 21, 2026.
Use the filters below to find and compare flights from Montana to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BozemanBoise
BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld
BZNBOI
Bozeman Gallatin Field
Thu 12/3
5:30 am-10:40 am
1 stop5h 10m
Boise Air Term. Gowen Fld
Sun 12/6
6:50 pm-12:09 am
1 stop5h 19m
$227
BozemanBoise
BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld
BZNBOI
Bozeman Gallatin Field
Fri 11/6
5:30 am-10:42 am
1 stop5h 12m
Boise Air Term. Gowen Fld
Sun 11/8
6:00 am-12:07 pm
1 stop6h 07m
$227
BozemanBoise
BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld
BZNBOI
Bozeman Gallatin Field
Fri 10/30
2:55 pm-4:07 pm
Nonstop1h 12m
Boise Air Term. Gowen Fld
Tue 11/3
10:41 am-10:52 pm
2 stops12h 11m
$230
BozemanBoise
BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld
BZNBOI
Bozeman Gallatin Field
Fri 9/25
5:05 pm-11:40 pm
1 stop6h 35m
Boise Air Term. Gowen Fld
Sun 9/27
6:30 am-11:25 am
1 stop4h 55m
$242
BozemanBoise
BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld
BZNBOI
Bozeman Gallatin Field
Thu 10/8
5:30 am-10:42 am
1 stop5h 12m
Boise Air Term. Gowen Fld
Sun 10/11
6:49 pm-12:27 am
1 stop5h 38m
$247
BozemanBoise
BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld
BZNBOI
Bozeman Gallatin Field
Sat 10/31
7:24 am-10:01 pm
2 stops14h 37m
Boise Air Term. Gowen Fld
Tue 11/3
10:41 am-10:52 pm
2 stops12h 11m
$253
BozemanBoise
BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld
BZNBOI
Bozeman Gallatin Field
Fri 9/18
2:30 pm-8:45 pm
1 stop6h 15m
Boise Air Term. Gowen Fld
Sat 9/19
2:25 pm-9:20 pm
1 stop6h 55m
$281
BozemanBoise
BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld
BZNBOI
Bozeman Gallatin Field
Sun 10/4
6:00 am-9:51 am
1 stop3h 51m
Boise Air Term. Gowen Fld
Tue 10/6
11:32 am-5:51 pm
1 stop6h 19m
$307
BozemanBoise
BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld
BZNBOI
Bozeman Gallatin Field
Fri 10/2
2:21 pm-9:56 am
1 stop19h 35m
Boise Air Term. Gowen Fld
Sun 10/4
2:09 pm-3:15 pm
Nonstop1h 06m
$315
BozemanBoise
BZN Bozeman Gallatin Field - BOI Boise Air Term. Gowen Fld
BZNBOI
Bozeman Gallatin Field
Thu 12/3
8:05 am-3:10 pm
1 stop7h 05m
Boise Air Term. Gowen Fld
Sun 12/6
6:00 am-3:25 pm
2 stops9h 25m
$316
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Montana to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Montana with our price prediction graph.
BZN-BOI
BZN-GEG
MSO-BOI
BIL-BOI
BIL-GEG
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 Montana to Idaho
USMT-USID
BZN-BOI
BZN-GEG
MSO-BOI
BIL-BOI
What is the cheapest month to book a flight from Montana to Idaho?
Currently, April is the cheapest month in which you can book a flight from Montana to Idaho (average of $212). Flying from Montana to Idaho in June is currently the most expensive (average of $496). 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.
How much does it cost to fly round-trip from Montana to Idaho?
Airfare is below average for this route at the moment.
Montana to Idaho flights typically cost between $359 and $498 in October.The cheapest round-trip price found within the last 5 days was $197 on Alaska Airlines (Oct 9-Oct 11).
Reviews of airlines servicing Idaho
Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated August 21, 2026.
Read through reviews of airlines operating flights from Montana to Idaho, such as Southwest,Alaska Airlines, andDelta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Montana to Idaho. 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
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Alternative routes for Montana to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Montana to Idaho by cabin class
Find flights from Montana to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Montana and Idaho flights
Browse other Montana and Idaho flight options. Last updated on August 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Idaho
Find the right flight back to Montana after your stay in Idaho
Montana to Idaho flights
Consider these flights traveling from Montana to Idaho.
Top 4 airlines flying from Montana to Idaho
Discover the top 4 airlines that operate flights from Montana to Idaho. 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 7,457,451 searches. Data last updated August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$117 | Average$326 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$132 | Average$414 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$148 | Average$394 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$286 | Average$387 | FlexibilityNo cancel fee | On-time63% |