$76+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — BOI
Apr 10 — Apr 171
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Montana to Idaho 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 Montana to Idaho
Cheapest
Best
Last-minute
One-way
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 March 11, 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 March 11, 2026.
This Trip.com deal was found by Cheapflights users on 3/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/91:50 pm
BZN
- BOI
Nonstop1h 15m
Hawaiian Airlines
Sun 4/122:18 pm
BOI
- BZN
Nonstop1h 06m
Hawaiian Airlines
Deal found 3/6![Hawaiian Airlines logo]()
$131
This CheapOair deal was found by Cheapflights users on 3/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/91:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Sun 4/122:18 pm
BOI
- BZN
Nonstop1h 06m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$137
This Trip.com deal was found by Cheapflights users on 3/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:26 pm
BZN
- BOI
1 stop4h 30m
Multiple Airlines
Sun 4/126:00 am
BOI
- BZN
1 stop4h 40m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$140
This Southwest deal was found by Cheapflights users on 3/6. 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 4/104:20 pm
BZN
- BOI
1 stop7h 10m
Southwest
Wed 4/153:15 pm
BOI
- BZN
1 stop6h 40m
Southwest
Deal found 3/6![Southwest logo]()
$157
This Delta deal was found by Cheapflights users on 3/9. 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 4/45:20 am
BZN
- BOI
1 stop4h 09m
Delta
Tue 4/76:15 pm
BOI
- BZN
1 stop4h 55m
Delta
Deal found 3/9![Delta logo]()
$167
This Delta deal was found by Cheapflights users on 3/9. 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 5/25:30 am
BZN
- BOI
1 stop4h 23m
Delta
Sat 5/26:16 pm
BOI
- BZN
1 stop3h 46m
Delta
Deal found 3/9![Delta logo]()
$187
This Delta deal was found by Cheapflights users on 3/7. 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 4/176:34 pm
BZN
- BOI
1 stop3h 22m
Delta
Sun 4/196:00 am
BOI
- BZN
1 stop5h 04m
Delta
Deal found 3/7![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 3/9. 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 5/13:15 pm
BZN
- BOI
1 stop18h 46m
Delta
Sun 5/37:24 am
BOI
- BZN
1 stop15h 16m
Delta
Deal found 3/9![Delta logo]()
$215
This Delta deal was found by Cheapflights users on 3/9. 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 5/13:15 pm
BZN
- BOI
1 stop4h 45m
Delta
Sat 5/23:44 pm
BOI
- BZN
2 stops19h 20m
Delta
Deal found 3/9![Delta logo]()
$220
This Alaska Airlines deal was found by Cheapflights users on 3/8. 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 4/157:26 pm
BZN
- GEG
1 stop5h 33m
Alaska Airlines
Sat 4/183:33 pm
GEG
- BZN
1 stop7h 24m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$221
This Delta deal was found by Cheapflights users on 3/10. 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 3/285:20 am
BZN
- BOI
1 stop4h 09m
Delta
Tue 3/316:00 am
BOI
- BZN
1 stop4h 57m
Delta
Deal found 3/10![Delta logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 5/26:22 pm
HLN
- GEG
1 stop15h 39m
Alaska Airlines
Tue 5/55:00 am
GEG
- HLN
1 stop11h 45m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$225
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 March 11, 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 March 11, 2026.
This Southwest deal was found by Cheapflights users on 3/9. 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 5/14:20 pm
BZN
- BOI
1 stop7h 35m
Southwest
Sat 5/21:55 pm
BOI
- BZN
1 stop5h 35m
Southwest
Deal found 3/9![Southwest logo]()
$157
This Delta deal was found by Cheapflights users on 3/8. 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 3/295:20 am
BZN
- BOI
1 stop4h 07m
Delta
Sun 4/56:00 am
BOI
- BZN
1 stop5h 02m
Delta
Deal found 3/8![Delta logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 4/101:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Wed 4/152:22 pm
BOI
- BZN
1 stop4h 24m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$167
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/182:35 pm
BIL
- BOI
1 stop6h 59m
United Airlines
Mon 4/205:00 am
BOI
- BIL
1 stop4h 40m
United Airlines
Deal found 3/10![United Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 3/9. 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 5/14:20 pm
BZN
- BOI
1 stop7h 35m
Southwest
Mon 5/44:20 pm
BOI
- BZN
1 stop6h 40m
Southwest
Deal found 3/9![Southwest logo]()
$157
This Southwest deal was found by Cheapflights users on 3/6. 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 4/104:20 pm
BZN
- BOI
1 stop7h 10m
Southwest
Wed 4/156:00 am
BOI
- BZN
2 stops8h 40m
Southwest
Deal found 3/6![Southwest logo]()
$162
This Delta deal was found by Cheapflights users on 3/9. 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 5/25:30 am
BZN
- BOI
1 stop4h 23m
Delta
Sat 5/26:16 pm
BOI
- BZN
1 stop3h 46m
Delta
Deal found 3/9![Delta logo]()
$187
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 4/157:26 pm
BZN
- GEG
1 stop5h 33m
Alaska Airlines
Sat 4/185:00 am
GEG
- BZN
1 stop12h 46m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$221
This Delta deal was found by Cheapflights users on 3/9. 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 5/13:15 pm
BZN
- BOI
1 stop4h 45m
Delta
Sat 5/23:44 pm
BOI
- BZN
2 stops19h 20m
Delta
Deal found 3/9![Delta logo]()
$220
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 5/26:22 pm
HLN
- GEG
1 stop15h 39m
Alaska Airlines
Tue 5/55:00 am
GEG
- HLN
1 stop11h 45m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$225
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 4/171:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Sun 4/196:00 am
BOI
- BZN
1 stop17h 57m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$230
This Delta deal was found by Cheapflights users on 3/8. 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 4/63:19 pm
BZN
- GEG
1 stop4h 46m
Delta
Mon 4/133:30 pm
GEG
- BZN
1 stop6h 10m
Delta
Deal found 3/8![Delta logo]()
$233
This Delta deal was found by Cheapflights users on 3/9. 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 4/25:20 am
BZN
- BOI
1 stop4h 07m
Delta
Sun 4/56:00 am
BOI
- BZN
1 stop5h 02m
Delta
Deal found 3/9![Delta logo]()
$233
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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 4/186:22 pm
HLN
- GEG
1 stop5h 48m
Alaska Airlines
Tue 4/216:00 am
GEG
- HLN
1 stop10h 45m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 3/8. 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 4/65:25 am
BZN
- GEG
2 stops7h 55m
Southwest
Mon 4/132:50 pm
GEG
- BZN
1 stop7h 10m
Southwest
Deal found 3/8![Southwest logo]()
$262
This Delta deal was found by Cheapflights users on 3/9. 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 4/95:20 am
BZN
- BOI
1 stop4h 07m
Delta
Sun 4/126:00 am
BOI
- BZN
1 stop5h 02m
Delta
Deal found 3/9![Delta logo]()
$233
This Southwest deal was found by Cheapflights users on 3/8. 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 4/37:10 pm
BZN
- BOI
1 stop6h 10m
Southwest
Mon 4/66:55 pm
BOI
- BZN
1 stop5h 15m
Southwest
Deal found 3/8![Southwest logo]()
$262
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 4/256:22 pm
HLN
- GEG
1 stop4h 09m
Alaska Airlines
Tue 5/55:00 am
GEG
- HLN
1 stop11h 45m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$254
This Delta deal was found by Cheapflights users on 3/7. 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 4/46:21 pm
BIL
- BOI
1 stop4h 54m
Delta
Sat 4/116:00 am
BOI
- BIL
1 stop4h 53m
Delta
Deal found 3/7![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 3/10. 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 5/1311:20 am
BZN
- GEG
2 stops12h 35m
Southwest
Wed 5/202:25 pm
GEG
- BZN
2 stops8h 50m
Southwest
Deal found 3/10![Southwest logo]()
$279
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 4/1112:34 pm
BIL
- BOI
1 stop4h 36m
Alaska Airlines
Tue 4/146:04 pm
BOI
- BIL
1 stop5h 54m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 3/8. 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 4/286:18 pm
BIL
- BOI
1 stop5h 39m
Delta
Wed 4/296:16 pm
BOI
- BIL
1 stop4h 08m
Delta
Deal found 3/8![Delta logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 4/116:22 pm
HLN
- BOI
1 stop4h 35m
Alaska Airlines
Wed 4/156:00 am
BOI
- HLN
1 stop11h 45m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$264
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 4/185:06 pm
GTF
- BOI
1 stop6h 50m
Alaska Airlines
Wed 4/2212:15 pm
BOI
- GTF
1 stop5h 20m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$266
This Delta deal was found by Cheapflights users on 3/10. 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 4/35:20 am
BZN
- GEG
1 stop4h 40m
Delta
Tue 4/73:25 pm
GEG
- BZN
1 stop6h 21m
Delta
Deal found 3/10![Delta logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 4/2512:47 pm
BIL
- GEG
1 stop20h 53m
Alaska Airlines
Tue 4/285:00 am
GEG
- BIL
1 stop16h 59m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$284
This Delta deal was found by Cheapflights users on 3/10. 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 4/36:22 pm
GTF
- BOI
1 stop3h 49m
Delta
Sun 4/58:00 am
BOI
- GTF
1 stop4h 24m
Delta
Deal found 3/10![Delta logo]()
$286
This Delta deal was found by Cheapflights users on 3/10. 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 4/71:02 pm
HLN
- GEG
2 stops9h 04m
Delta
Tue 4/141:07 pm
GEG
- HLN
2 stops8h 23m
Delta
Deal found 3/10![Delta logo]()
$295
This United Airlines deal was found by Cheapflights users on 3/6. 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 4/185:15 pm
MSO
- JAC
1 stop20h 06m
United Airlines
Wed 4/2210:40 am
JAC
- MSO
1 stop26h 52m
United Airlines
Deal found 3/6![United Airlines logo]()
$697
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/276:22 pm
HLN
- BOI
1 stop5h 34m
Alaska Airlines
Sat 3/2811:58 am
BOI
- HLN
1 stop5h 47m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$308
Last-minute flights from Montana to IdahoDiscover last-minute flight deals from Montana to Idaho. Data last updated March 11, 2026 and is based on user searches.
Discover last-minute flight deals from Montana to Idaho. Data last updated March 11, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/10. 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 3/285:20 am
BZN
- BOI
1 stop4h 09m
Delta
Tue 3/316:00 am
BOI
- BZN
1 stop4h 57m
Delta
Deal found 3/10![Delta logo]()
$222
This Delta deal was found by Cheapflights users on 3/9. 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 4/25:20 am
BZN
- BOI
1 stop4h 07m
Delta
Sun 4/56:00 am
BOI
- BZN
1 stop5h 02m
Delta
Deal found 3/9![Delta logo]()
$233
This Expedia deal was found by Cheapflights users on 3/8. 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 4/31:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Mon 4/62:22 pm
BOI
- BZN
1 stop9h 35m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$226
This Delta deal was found by Cheapflights users on 3/9. 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 4/45:20 am
BZN
- BOI
1 stop4h 09m
Delta
Tue 4/76:15 pm
BOI
- BZN
1 stop4h 55m
Delta
Deal found 3/9![Delta logo]()
$167
This Delta deal was found by Cheapflights users on 3/8. 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 4/63:19 pm
BZN
- GEG
1 stop4h 46m
Delta
Mon 4/133:30 pm
GEG
- BZN
1 stop6h 10m
Delta
Deal found 3/8![Delta logo]()
$233
This Trip.com deal was found by Cheapflights users on 3/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/91:50 pm
BZN
- BOI
Nonstop1h 15m
Hawaiian Airlines
Sun 4/122:18 pm
BOI
- BZN
Nonstop1h 06m
Hawaiian Airlines
Deal found 3/6![Hawaiian Airlines logo]()
$131
This CheapOair deal was found by Cheapflights users on 3/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/91:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Sun 4/122:18 pm
BOI
- BZN
Nonstop1h 06m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$137
This Trip.com deal was found by Cheapflights users on 3/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:26 pm
BZN
- BOI
1 stop4h 30m
Multiple Airlines
Sun 4/126:00 am
BOI
- BZN
1 stop4h 40m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$140
This Southwest deal was found by Cheapflights users on 3/6. 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 4/104:20 pm
BZN
- BOI
1 stop7h 10m
Southwest
Wed 4/153:15 pm
BOI
- BZN
1 stop6h 40m
Southwest
Deal found 3/6![Southwest logo]()
$157
This Alaska Airlines deal was found by Cheapflights users on 3/8. 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 4/157:26 pm
BZN
- GEG
1 stop5h 33m
Alaska Airlines
Sat 4/183:33 pm
GEG
- BZN
1 stop7h 24m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$221
This Delta deal was found by Cheapflights users on 3/7. 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 4/176:34 pm
BZN
- BOI
1 stop3h 22m
Delta
Sun 4/196:00 am
BOI
- BZN
1 stop5h 04m
Delta
Deal found 3/7![Delta logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 4/171:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Sun 4/196:00 am
BOI
- BZN
1 stop17h 57m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$230
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 March 11, 2026.
Search for one-way flight options from Montana to Idaho. Find affordable one-way fares based on user searches. Data last updated March 11, 2026.
This Southwest deal was found by Cheapflights users on 3/10. 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 5/211:10 am
BZN
- BOI
1 stop5h 05m
Southwest
Deal found 3/10![Southwest logo]()
$76
This CheapOair deal was found by Cheapflights users on 3/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/311:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$79
This Delta deal was found by Cheapflights users on 3/9. 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 3/305:20 am
BZN
- BOI
1 stop4h 07m
Delta
Deal found 3/9![Delta logo]()
$84
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 4/308:00 am
BZN
- BOI
1 stop5h 52m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$112
This Delta deal was found by Cheapflights users on 3/9. 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 4/116:21 pm
BIL
- BOI
1 stop4h 54m
Delta
Deal found 3/9![Delta logo]()
$119
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 4/246:15 pm
GTF
- BOI
1 stop18h 20m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$123
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/61:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$124
This Southwest deal was found by Cheapflights users on 3/9. 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 4/234:20 pm
BZN
- GEG
1 stop7h 00m
Southwest
Deal found 3/9![Southwest logo]()
$129
This Delta deal was found by Cheapflights users on 3/5. 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 4/125:56 pm
FCA
- BOI
1 stop4h 15m
Delta
Deal found 3/5![Delta logo]()
$133
This Expedia deal was found by Cheapflights users on 3/9. 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 3/241:50 pm
BZN
- BOI
Nonstop1h 15m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$144
This Delta deal was found by Cheapflights users on 3/7. 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 5/211:03 pm
HLN
- GEG
2 stops10h 48m
Delta
Deal found 3/7![Delta logo]()
$153
This Delta deal was found by Cheapflights users on 3/9. 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 3/245:20 am
BZN
- BOI
1 stop4h 07m
Delta
Deal found 3/9![Delta logo]()
$154
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 March 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $131 (Trip.com) |
One-way from | $76 (Southwest) |
Popular in | May |
Cheapest in | January |
Average price | $147 |
Good one-way deal | $194 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 2,558,603 searches. Data last updated March 11, 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 - BOI
BZNBOI
Bozeman Gallatin Field
Fri 5/1
4:20 pm-11:55 pm
1 stop7h 35m
Boise Air Term. Gowen Fld
Sat 5/2
1:55 pm-7:30 pm
1 stop5h 35m
$157
BozemanBoise
BZN - BOI
BZNBOI
Bozeman Gallatin Field
Fri 5/1
4:20 pm-11:55 pm
1 stop7h 35m
Boise Air Term. Gowen Fld
Mon 5/4
4:20 pm-11:00 pm
1 stop6h 40m
$157
BozemanBoise
BZN - BOI
BZNBOI
Bozeman Gallatin Field
Fri 4/10
4:20 pm-11:30 pm
1 stop7h 10m
Boise Air Term. Gowen Fld
Wed 4/15
6:00 am-2:40 pm
2 stops8h 40m
$162
BozemanBoise
BZN - BOI
BZNBOI
Bozeman Gallatin Field
Sun 3/29
5:20 am-9:27 am
1 stop4h 07m
Boise Air Term. Gowen Fld
Sun 4/5
6:00 am-11:02 am
1 stop5h 02m
$167
Quickest round-trip
BozemanBoise
BZN - BOI
BZNBOI
Bozeman Gallatin Field
Fri 4/10
1:50 pm-3:05 pm
Nonstop1h 15m
Boise Air Term. Gowen Fld
Wed 4/15
2:22 pm-6:46 pm
1 stop4h 24m
$167
BozemanBoise
BZN - BOI
BZNBOI
Bozeman Gallatin Field
Sat 5/2
5:30 am-9:53 am
1 stop4h 23m
Boise Air Term. Gowen Fld
Sat 5/2
6:16 pm-10:02 pm
1 stop3h 46m
$187
BozemanBoise
BZN - BOI
BZNBOI
Bozeman Gallatin Field
Fri 5/1
3:15 pm-8:00 pm
1 stop4h 45m
Boise Air Term. Gowen Fld
Sat 5/2
3:44 pm-11:04 am
2 stops19h 20m
$220
BozemanSpokane
BZN - GEG
BZNGEG
Bozeman Gallatin Field
Wed 4/15
7:26 pm-11:59 pm
1 stop5h 33m
Spokane
Sat 4/18
5:00 am-6:46 pm
1 stop12h 46m
$221
HelenaSpokane
HLN - GEG
HLNGEG
Helena
Sat 5/2
6:22 pm-9:01 am
1 stop15h 39m
Spokane
Tue 5/5
5:00 am-5:45 pm
1 stop11h 45m
$225
BozemanBoise
BZN - BOI
BZNBOI
Bozeman Gallatin Field
Fri 4/17
1:50 pm-3:05 pm
Nonstop1h 15m
Boise Air Term. Gowen Fld
Sun 4/19
6:00 am-11:57 pm
1 stop17h 57m
$230
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
HLN-GEG
FCA-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
HLN-GEG
FCA-BOI
What is the cheapest month to book a flight from Montana to Idaho?
Currently, July is the cheapest month in which you can book a flight from Montana to Idaho (average of $105). Flying from Montana to Idaho in September is currently the most expensive (average of $186). 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 MT to ID?
Find hourly flight availability from Montana to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 11, 2026.
When flying from Montana to Idaho, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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 March 11, 2026.
Read through reviews of airlines operating flights from Montana to Idaho, such as Alaska Airlines,Southwest, andDelta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Boarding
8.1
Overall
8.0
Comfort
7.8
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Boarding
8.1
Overall
8.0
Comfort
7.8
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Boarding
8.1
Overall
8.0
Comfort
7.8
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Boarding
8.1
Overall
8.0
Comfort
7.8
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Boarding
8.1
Overall
8.0
Comfort
7.8
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
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
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 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 March 11, 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 2,558,603 searches. Data last updated March 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$107 | Average$322 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$132 | Average$439 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$148 | Average$384 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$158 | Average$402 | FlexibilityNo cancel fee | On-time63% |