$96+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — BZN
Apr 26 — May 31
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to Montana with Cheapflights
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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 March 27, 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 March 27, 2026.
This Expedia deal was found by Cheapflights users on 3/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/162:18 pm
BOI
- BZN
Nonstop1h 06m
Alaska Airlines
Sun 4/191:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 3/23. 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 5/55:15 pm
BOI
- BZN
1 stop7h 00m
Southwest
Wed 5/63:20 pm
BZN
- BOI
2 stops9h 05m
Southwest
Deal found 3/23![Southwest logo]()
$186
This Expedia deal was found by Cheapflights users on 3/23. 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.
Mon 4/206:04 pm
BOI
- BZN
1 stop5h 53m
Alaska Airlines
Mon 4/273:49 pm
BZN
- BOI
1 stop7h 13m
Alaska Airlines
Deal found 3/23![Alaska Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 3/23. 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.
Mon 4/204:20 pm
BOI
- BZN
1 stop6h 40m
Southwest
Mon 4/274:20 pm
BZN
- BOI
2 stops8h 25m
Southwest
Deal found 3/23![Southwest logo]()
$202
This Southwest deal was found by Cheapflights users on 3/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:40 pm
BOI
- BZN
1 stop5h 30m
Southwest
Sun 6/78:20 pm
BZN
- BOI
1 stop5h 00m
Southwest
Deal found 3/25![Southwest logo]()
$218
This Southwest deal was found by Cheapflights users on 3/24. 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.
Fri 6/54:25 pm
BOI
- BZN
2 stops8h 45m
Southwest
Mon 6/87:15 pm
BZN
- BOI
1 stop5h 50m
Southwest
Deal found 3/24![Southwest logo]()
$223
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 4/186:00 am
BOI
- BZN
1 stop4h 40m
Alaska Airlines
Wed 4/228:00 am
BZN
- BOI
1 stop7h 33m
Alaska Airlines
Deal found 3/26![Alaska Airlines logo]()
$252
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/211:45 pm
GEG
- BZN
1 stop7h 10m
Southwest
Tue 4/2811:20 am
BZN
- GEG
2 stops12h 35m
Southwest
Deal found 3/24![Southwest logo]()
$258
This Southwest deal was found by Cheapflights users on 3/24. 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 4/272:50 pm
GEG
- BZN
1 stop7h 10m
Southwest
Wed 5/63:20 pm
BZN
- GEG
1 stop7h 15m
Southwest
Deal found 3/24![Southwest logo]()
$264
This Delta deal was found by Cheapflights users on 3/25. 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.
Thu 6/1111:53 am
BOI
- BZN
1 stop3h 23m
Delta
Mon 6/155:15 am
BZN
- BOI
1 stop4h 17m
Delta
Deal found 3/25![Delta logo]()
$273
This Southwest deal was found by Cheapflights users on 3/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2710:55 am
GEG
- BZN
2 stops12h 20m
Southwest
Sat 5/302:55 pm
BZN
- GEG
1 stop7h 20m
Southwest
Deal found 3/25![Southwest logo]()
$275
This Alaska Airlines deal was found by Cheapflights users on 3/22. 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.
Thu 4/92:22 pm
BOI
- BZN
1 stop4h 24m
Alaska Airlines
Sun 4/121:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$282
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 March 27, 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 March 27, 2026.
This Southwest deal was found by Cheapflights users on 3/23. 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 5/55:15 pm
BOI
- BZN
1 stop7h 00m
Southwest
Wed 5/63:20 pm
BZN
- BOI
2 stops9h 05m
Southwest
Deal found 3/23![Southwest logo]()
$186
This Alaska Airlines deal was found by Cheapflights users on 3/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:00 am
BOI
- BZN
1 stop4h 40m
Alaska Airlines
Wed 4/228:00 am
BZN
- BOI
1 stop7h 33m
Alaska Airlines
Deal found 3/24![Alaska Airlines logo]()
$252
This Delta deal was found by Cheapflights users on 3/23. 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 4/296:00 am
BOI
- FCA
1 stop5h 23m
Delta
Sun 5/35:05 am
FCA
- BOI
1 stop4h 48m
Delta
Deal found 3/23![Delta logo]()
$285
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Tue 4/215:00 am
BOI
- BIL
1 stop4h 40m
United Airlines
Tue 4/282:35 pm
BIL
- BOI
1 stop6h 47m
United Airlines
Deal found 3/23![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 3/27. 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.
Sat 4/2511:00 am
BOI
- BZN
2 stops8h 30m
Southwest
Sat 5/211:10 am
BZN
- BOI
2 stops9h 15m
Southwest
Deal found 3/27![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/211:45 pm
GEG
- BZN
1 stop7h 10m
Southwest
Tue 4/2811:20 am
BZN
- GEG
2 stops12h 35m
Southwest
Deal found 3/24![Southwest logo]()
$258
This Delta deal was found by Cheapflights users on 3/24. 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 4/286:16 pm
BOI
- FCA
1 stop5h 11m
Delta
Sun 5/36:10 pm
FCA
- BOI
1 stop5h 47m
Delta
Deal found 3/24![Delta logo]()
$285
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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.
Fri 4/176:04 pm
BOI
- MSO
1 stop5h 53m
Alaska Airlines
Mon 4/204:23 pm
MSO
- BOI
1 stop6h 34m
Alaska Airlines
Deal found 3/26![Alaska Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 3/25. 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.
Mon 5/186:41 pm
BOI
- BZN
1 stop5h 18m
Delta
Thu 5/215:35 am
BZN
- BOI
1 stop3h 57m
Delta
Deal found 3/25![Delta logo]()
$293
This Alaska Airlines deal was found by Cheapflights users on 3/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/185:00 am
GEG
- BZN
1 stop4h 40m
Alaska Airlines
Tue 4/217:26 pm
BZN
- GEG
1 stop4h 44m
Alaska Airlines
Deal found 3/23![Alaska Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 3/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2710:55 am
GEG
- BZN
2 stops12h 20m
Southwest
Sat 5/302:55 pm
BZN
- GEG
1 stop7h 20m
Southwest
Deal found 3/25![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 3/22. 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 4/216:16 pm
BOI
- BIL
1 stop4h 08m
Delta
Tue 4/285:20 am
BIL
- BOI
1 stop4h 33m
Delta
Deal found 3/22![Delta logo]()
$297
This Alaska Airlines deal was found by Cheapflights users on 3/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
BOI
- HLN
1 stop11h 45m
Alaska Airlines
Wed 5/66:22 pm
HLN
- BOI
1 stop5h 37m
Alaska Airlines
Deal found 3/23![Alaska Airlines logo]()
$297
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Sat 8/225:44 pm
BOI
- BTM
1 stop4h 43m
United Airlines
Wed 8/2610:00 am
BTM
- BOI
1 stop7h 53m
United Airlines
Deal found 3/23![United Airlines logo]()
$388
This Southwest deal was found by Cheapflights users on 3/27. 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.
Sat 4/181:10 pm
GEG
- BZN
1 stop7h 30m
Southwest
Tue 4/2111:20 am
BZN
- GEG
2 stops12h 35m
Southwest
Deal found 3/27![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 3/23. 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.
Sun 5/174:15 pm
GEG
- BZN
1 stop6h 06m
Delta
Wed 5/201:00 pm
BZN
- GEG
1 stop3h 58m
Delta
Deal found 3/23![Delta logo]()
$308
This Alaska Airlines deal was found by Cheapflights users on 3/22. 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.
Sat 4/188:21 am
GEG
- BZN
1 stop3h 49m
Alaska Airlines
Mon 4/207:26 pm
BZN
- GEG
1 stop5h 33m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 3/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/211:46 pm
GEG
- BIL
1 stop6h 11m
United Airlines
Sat 4/257:00 am
BIL
- GEG
1 stop6h 40m
United Airlines
Deal found 3/22![United Airlines logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 3/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
BOI
- MSO
1 stop6h 28m
Alaska Airlines
Sat 5/21:59 pm
MSO
- BOI
1 stop4h 35m
Alaska Airlines
Deal found 3/24![Alaska Airlines logo]()
$311
This Delta deal was found by Cheapflights users on 3/27. 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.
Wed 4/2210:45 am
BOI
- FCA
1 stop6h 45m
Delta
Sun 4/265:05 am
FCA
- BOI
1 stop4h 48m
Delta
Deal found 3/27![Delta logo]()
$312
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/141:45 pm
GEG
- BZN
1 stop7h 10m
Southwest
Thu 4/167:20 am
BZN
- GEG
2 stops10h 40m
Southwest
Deal found 3/24![Southwest logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 3/22. 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.
Wed 4/156:00 am
BOI
- BIL
1 stop5h 54m
Alaska Airlines
Sat 4/182:05 pm
BIL
- BOI
1 stop5h 43m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$316
This Delta deal was found by Cheapflights users on 3/26. 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.
Thu 4/2312:52 pm
BOI
- BTM
1 stop4h 16m
Delta
Thu 4/306:10 pm
BTM
- BOI
1 stop3h 46m
Delta
Deal found 3/26![Delta logo]()
$324
This Delta deal was found by Cheapflights users on 3/23. 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 5/136:41 pm
BOI
- HLN
1 stop3h 52m
Delta
Wed 5/275:45 am
HLN
- BOI
1 stop3h 47m
Delta
Deal found 3/23![Delta logo]()
$326
This Alaska Airlines deal was found by Cheapflights users on 3/22. 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.
Wed 4/1511:58 am
BOI
- HLN
1 stop5h 47m
Alaska Airlines
Sat 4/186:22 pm
HLN
- BOI
1 stop4h 35m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$332
This United Airlines deal was found by Cheapflights users on 3/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/115:29 pm
BOI
- BTM
1 stop4h 53m
United Airlines
Wed 4/159:37 am
BTM
- BOI
1 stop12h 58m
United Airlines
Deal found 3/22![United Airlines logo]()
$502
This Delta deal was found by Cheapflights users on 3/24. 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.
Wed 4/810:25 am
BOI
- BTM
1 stop6h 43m
Delta
Sun 4/126:10 pm
BTM
- BOI
1 stop5h 49m
Delta
Deal found 3/24![Delta logo]()
$332
This Alaska Airlines deal was found by Cheapflights users on 3/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:00 am
BOI
- BIL
1 stop6h 07m
Alaska Airlines
Tue 5/52:06 pm
BIL
- BOI
1 stop4h 28m
Alaska Airlines
Deal found 3/23![Alaska Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Tue 4/216:15 am
BOI
- COD
1 stop16h 30m
United Airlines
Sat 4/256:20 am
COD
- BOI
2 stops29h 03m
United Airlines
Deal found 3/23![United Airlines logo]()
$531
This Delta deal was found by Cheapflights users on 3/25. 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.
Thu 4/910:25 am
BOI
- BTM
1 stop6h 43m
Delta
Mon 4/136:10 pm
BTM
- BOI
1 stop5h 47m
Delta
Deal found 3/25![Delta logo]()
$334
Last-minute flights from Idaho to MontanaDiscover last-minute flight deals from Idaho to Montana. Data last updated March 27, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Montana. Data last updated March 27, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 3/22. 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.
Thu 4/92:22 pm
BOI
- BZN
1 stop4h 24m
Alaska Airlines
Sun 4/121:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$282
This Expedia deal was found by Cheapflights users on 3/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/162:18 pm
BOI
- BZN
Nonstop1h 06m
Alaska Airlines
Sun 4/191:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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.
Thu 4/166:04 pm
BOI
- FCA
1 stop5h 43m
Alaska Airlines
Sat 4/181:52 pm
FCA
- BOI
1 stop5h 56m
Alaska Airlines
Deal found 3/26![Alaska Airlines logo]()
$285
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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.
Fri 4/176:04 pm
BOI
- MSO
1 stop5h 53m
Alaska Airlines
Mon 4/204:23 pm
MSO
- BOI
1 stop6h 34m
Alaska Airlines
Deal found 3/26![Alaska Airlines logo]()
$285
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 4/186:00 am
BOI
- BZN
1 stop4h 40m
Alaska Airlines
Wed 4/228:00 am
BZN
- BOI
1 stop7h 33m
Alaska Airlines
Deal found 3/26![Alaska Airlines logo]()
$252
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 4/185:00 am
GEG
- BZN
1 stop4h 40m
Alaska Airlines
Tue 4/211:50 pm
BZN
- GEG
1 stop6h 23m
Alaska Airlines
Deal found 3/26![Alaska Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 3/27. 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.
Sat 4/181:10 pm
GEG
- BZN
1 stop7h 30m
Southwest
Tue 4/2111:20 am
BZN
- GEG
2 stops12h 35m
Southwest
Deal found 3/27![Southwest logo]()
$302
This Expedia deal was found by Cheapflights users on 3/23. 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.
Mon 4/206:04 pm
BOI
- BZN
1 stop5h 53m
Alaska Airlines
Mon 4/273:49 pm
BZN
- BOI
1 stop7h 13m
Alaska Airlines
Deal found 3/23![Alaska Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 3/23. 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.
Mon 4/204:20 pm
BOI
- BZN
1 stop6h 40m
Southwest
Mon 4/274:20 pm
BZN
- BOI
2 stops8h 25m
Southwest
Deal found 3/23![Southwest logo]()
$202
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/211:45 pm
GEG
- BZN
1 stop7h 10m
Southwest
Tue 4/2811:20 am
BZN
- GEG
2 stops12h 35m
Southwest
Deal found 3/24![Southwest logo]()
$258
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Tue 4/215:00 am
BOI
- BIL
1 stop4h 40m
United Airlines
Tue 4/282:35 pm
BIL
- BOI
1 stop6h 47m
United Airlines
Deal found 3/23![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 3/24. 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 4/272:50 pm
GEG
- BZN
1 stop7h 10m
Southwest
Wed 5/63:20 pm
BZN
- GEG
1 stop7h 15m
Southwest
Deal found 3/24![Southwest logo]()
$264
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 March 27, 2026.
Search for one-way flight options from Idaho to Montana. Find affordable one-way fares based on user searches. Data last updated March 27, 2026.
This Southwest deal was found by Cheapflights users on 3/26. 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.
Wed 4/225:00 pm
BOI
- BZN
2 stops7h 15m
Southwest
Deal found 3/26![Southwest logo]()
$96
This Southwest deal was found by Cheapflights users on 3/23. 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.
Mon 4/204:20 pm
BOI
- BZN
1 stop6h 40m
Southwest
Deal found 3/23![Southwest logo]()
$99
This Southwest deal was found by Cheapflights users on 3/27. 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 4/285:00 pm
BOI
- BZN
2 stops7h 15m
Southwest
Deal found 3/27![Southwest logo]()
$104
This Expedia deal was found by Cheapflights users on 3/23. 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.
Mon 4/202:18 pm
BOI
- BZN
Nonstop1h 06m
Alaska Airlines
Deal found 3/23![Alaska Airlines logo]()
$109
This Delta deal was found by Cheapflights users on 3/26. 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.
Wed 4/226:00 am
BOI
- BZN
1 stop5h 04m
Delta
Deal found 3/26![Delta logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 4/303:13 pm
BOI
- BZN
2 stops20h 06m
Allegiant Air
Deal found 3/27![Allegiant Air logo]()
$159
This Delta deal was found by Cheapflights users on 3/22. 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.
Sun 4/129:40 am
GEG
- BZN
1 stop3h 56m
Delta
Deal found 3/22![Delta logo]()
$160
This Delta deal was found by Cheapflights users on 3/23. 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 5/1412:55 pm
BOI
- BZN
1 stop5h 00m
Delta
Deal found 3/23![Delta logo]()
$170
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Thu 4/165:00 am
BOI
- BIL
1 stop4h 40m
United Airlines
Deal found 3/23![United Airlines logo]()
$178
This Southwest deal was found by Cheapflights users on 3/27. 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.
Wed 4/295:00 pm
BOI
- BZN
2 stops7h 15m
Southwest
Deal found 3/27![Southwest logo]()
$183
This Southwest deal was found by Cheapflights users on 3/26. 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 7/96:00 am
BOI
- BZN
1 stop4h 35m
Southwest
Deal found 3/26![Southwest logo]()
$184
This Southwest deal was found by Cheapflights users on 3/24. 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.
Wed 7/155:00 am
GEG
- BZN
1 stop6h 50m
Southwest
Deal found 3/24![Southwest logo]()
$184
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 March 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $177 (Expedia) |
One-way from | $96 (Southwest) |
Popular in | September |
Cheapest in | November |
Average price | $202 |
Good round-trip deal | $172 or less |
Good one-way deal | $133 or less |
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 March 27, 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
Tue 5/5
5:15 pm-12:15 am
1 stop7h 00m
Bozeman Gallatin Field
Wed 5/6
3:20 pm-12:25 am
2 stops9h 05m
$186
BoiseBozeman
BOI - BZN
BOIBZN
Boise Air Term. Gowen Fld
Sat 4/25
11:00 am-7:30 pm
2 stops8h 30m
Bozeman Gallatin Field
Sat 5/2
11:10 am-8:25 pm
2 stops9h 15m
$207
BoiseBozeman
BOI - BZN
BOIBZN
Boise Air Term. Gowen Fld
Sat 4/18
6:00 am-10:40 am
1 stop4h 40m
Bozeman Gallatin Field
Wed 4/22
8:00 am-3:33 pm
1 stop7h 33m
$252
SpokaneBozeman
GEG - BZN
GEGBZN
Spokane
Tue 4/21
1:45 pm-9:55 pm
1 stop7h 10m
Bozeman Gallatin Field
Tue 4/28
11:20 am-10:55 pm
2 stops12h 35m
$258
SpokaneBozeman
GEG - BZN
GEGBZN
Spokane
Wed 5/27
10:55 am-12:15 am
2 stops12h 20m
Bozeman Gallatin Field
Sat 5/30
2:55 pm-9:15 pm
1 stop7h 20m
$275
BoiseKalispell
BOI - FCA
BOIFCA
Boise Air Term. Gowen Fld
Wed 4/29
6:00 am-11:23 am
1 stop5h 23m
Kalispell Glacier Park
Sun 5/3
5:05 am-9:53 am
1 stop4h 48m
$285
BoiseKalispell
BOI - FCA
BOIFCA
Boise Air Term. Gowen Fld
Tue 4/28
6:16 pm-11:27 pm
1 stop5h 11m
Kalispell Glacier Park
Sun 5/3
6:10 pm-11:57 pm
1 stop5h 47m
$285
BoiseMissoula
BOI - MSO
BOIMSO
Boise Air Term. Gowen Fld
Fri 4/17
6:04 pm-11:57 pm
1 stop5h 53m
Missoula Johnson-Bell Field
Mon 4/20
4:23 pm-10:57 pm
1 stop6h 34m
$285
BoiseBozeman
BOI - BZN
BOIBZN
Boise Air Term. Gowen Fld
Mon 5/18
6:41 pm-11:59 pm
1 stop5h 18m
Bozeman Gallatin Field
Thu 5/21
5:35 am-9:32 am
1 stop3h 57m
$293
BoiseBillings
BOI - BIL
BOIBIL
Boise Air Term. Gowen Fld
Tue 4/21
5:00 am-9:40 am
1 stop4h 40m
Billings Logan Intl
Tue 4/28
2:35 pm-9:22 pm
1 stop6h 47m
$297
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
BOI-BIL
BOI-FCA
GEG-BZN
GEG-BIL
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
BOI-BIL
BOI-FCA
GEG-BZN
What is the cheapest month to book a flight from Idaho to Montana?
Currently, August is the cheapest month in which you can book a flight from Idaho to Montana (average of $86). Flying from Idaho to Montana in May is currently the most expensive (average of $214). 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 ID to MT?
Find hourly flight availability from Idaho 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 March 27, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Montana as you normally would.
How much does it cost to fly round-trip from Idaho to Montana?
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 March 27, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andUnited Airlines 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
Food
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Food
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Food
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Food
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
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.
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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 March 27, 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 3 airlines flying from Idaho to Montana
Discover the top 3 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 March 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$293 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$99 | Average$404 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$290 | Average$574 | FlexibilityNo cancel fee | On-time69% |