$138+ Cheap flights from Boston (BOS) 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.
BOS — BOI
May 10 — May 171
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Idaho with Cheapflights
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Cheapest flights from Boston to IdahoExplore the most affordable flight options available from Boston to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 10, 2026.
Explore the most affordable flight options available from Boston to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 10, 2026.
This Delta deal was found by Cheapflights users on 4/9. 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.
Wed 5/278:10 am
BOS
- BOI
1 stop7h 08m
Delta
Tue 6/29:18 pm
BOI
- BOS
1 stop8h 15m
Delta
Deal found 4/9![Delta logo]()
$285
This American Airlines deal was found by Cheapflights users on 4/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:00 am
BOS
- BOI
1 stop10h 07m
American Airlines
Tue 6/23:11 pm
BOI
- BOS
1 stop7h 04m
American Airlines
Deal found 4/6![American Airlines logo]()
$289
This American Airlines deal was found by Cheapflights users on 4/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
BOS
- BOI
2 stops10h 20m
American Airlines
Sat 5/303:11 pm
BOI
- BOS
1 stop7h 04m
American Airlines
Deal found 4/9![American Airlines logo]()
$290
This American Airlines deal was found by Cheapflights users on 4/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:00 am
BOS
- BOI
1 stop11h 07m
American Airlines
Sat 5/303:11 pm
BOI
- BOS
1 stop7h 04m
American Airlines
Deal found 4/7![American Airlines logo]()
$292
This Southwest deal was found by Cheapflights users on 4/8. 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.
Wed 4/295:35 am
BOS
- GEG
1 stop7h 40m
Southwest
Sat 5/910:45 am
GEG
- BOS
1 stop10h 05m
Southwest
Deal found 4/8![Southwest logo]()
$293
This American Airlines deal was found by Cheapflights users on 4/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/174:06 pm
BOS
- BOI
1 stop8h 23m
American Airlines
Wed 6/243:11 pm
BOI
- BOS
1 stop7h 04m
American Airlines
Deal found 4/8![American Airlines logo]()
$295
This American Airlines deal was found by Cheapflights users on 4/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:13 am
BOS
- GEG
1 stop11h 06m
American Airlines
Tue 5/121:13 pm
GEG
- BOS
1 stop8h 12m
American Airlines
Deal found 4/6![American Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 4/9. 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 8/273:30 pm
BOS
- GEG
1 stop11h 14m
Delta
Wed 9/27:07 pm
GEG
- BOS
1 stop8h 02m
Delta
Deal found 4/9![Delta logo]()
$301
This American Airlines deal was found by Cheapflights users on 4/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/27:00 am
BOS
- BOI
1 stop9h 16m
American Airlines
Tue 7/76:20 am
BOI
- BOS
1 stop11h 00m
American Airlines
Deal found 4/6![American Airlines logo]()
$301
This American Airlines deal was found by Cheapflights users on 4/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 am
BOS
- BOI
2 stops10h 02m
American Airlines
Sat 9/1212:10 pm
BOI
- BOS
1 stop9h 00m
American Airlines
Deal found 4/8![American Airlines logo]()
$302
This American Airlines deal was found by Cheapflights users on 4/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:00 am
BOS
- BOI
1 stop9h 16m
American Airlines
Tue 8/1112:10 pm
BOI
- BOS
1 stop9h 45m
American Airlines
Deal found 4/9![American Airlines logo]()
$304
This American Airlines deal was found by Cheapflights users on 4/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
BOS
- GEG
2 stops11h 19m
American Airlines
Thu 5/71:13 pm
GEG
- BOS
1 stop8h 12m
American Airlines
Deal found 4/6![American Airlines logo]()
$306
Best flights from Boston to IdahoDiscover carefully curated flight deals from Boston to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 10, 2026.
Discover carefully curated flight deals from Boston to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 10, 2026.
This Southwest deal was found by Cheapflights users on 4/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/22:25 pm
BOS
- GEG
2 stops11h 30m
Southwest
Sat 6/62:20 pm
GEG
- BOS
1 stop7h 15m
Southwest
Deal found 4/5![Southwest logo]()
$298
This Alaska Airlines deal was found by Cheapflights users on 4/7. 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.
Mon 6/18:05 am
BOS
- GEG
1 stop16h 40m
Alaska Airlines
Tue 6/97:01 am
GEG
- BOS
1 stop19h 43m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 4/5. 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.
Thu 6/117:15 am
BOS
- GEG
1 stop9h 03m
Delta
Mon 6/155:05 pm
GEG
- BOS
1 stop10h 00m
Delta
Deal found 4/5![Delta logo]()
$309
This American Airlines deal was found by Cheapflights users on 4/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:45 am
BOS
- IDA
1 stop8h 59m
American Airlines
Sat 8/2912:12 pm
IDA
- BOS
1 stop9h 43m
American Airlines
Deal found 4/6![American Airlines logo]()
$396
This United Airlines deal was found by Cheapflights users on 4/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:30 pm
BOS
- JAC
1 stop8h 22m
United Airlines
Thu 8/278:00 am
JAC
- BOS
2 stops15h 05m
United Airlines
Deal found 4/9![United Airlines logo]()
$498
This Southwest deal was found by Cheapflights users on 4/8. 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.
Wed 4/292:25 pm
BOS
- GEG
2 stops11h 30m
Southwest
Sat 5/95:45 am
GEG
- BOS
2 stops12h 20m
Southwest
Deal found 4/8![Southwest logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 4/8. 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.
Mon 6/18:05 am
BOS
- GEG
1 stop16h 40m
Alaska Airlines
Mon 6/87:01 am
GEG
- BOS
1 stop19h 43m
Alaska Airlines
Deal found 4/8![Alaska Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 4/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:10 am
BOS
- GEG
1 stop9h 11m
Delta
Mon 8/105:00 pm
GEG
- BOS
1 stop10h 09m
Delta
Deal found 4/6![Delta logo]()
$318
This Alaska Airlines deal was found by Cheapflights users on 4/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:42 pm
BOS
- GEG
1 stop8h 13m
Alaska Airlines
Sat 5/168:38 pm
GEG
- BOS
1 stop8h 03m
Alaska Airlines
Deal found 4/5![Alaska Airlines logo]()
$315
This Delta deal was found by Cheapflights users on 4/9. 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.
Sun 6/75:55 am
BOS
- GEG
1 stop8h 45m
Delta
Thu 6/112:23 pm
GEG
- BOS
1 stop6h 34m
Delta
Deal found 4/9![Delta logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 4/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:00 am
BOS
- BOI
1 stop10h 33m
Alaska Airlines
Tue 5/1212:15 pm
BOI
- BOS
1 stop9h 44m
Alaska Airlines
Deal found 4/5![Alaska Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 4/6. 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.
Wed 5/272:25 pm
BOS
- BOI
2 stops11h 05m
Southwest
Tue 6/26:00 am
BOI
- BOS
2 stops10h 35m
Southwest
Deal found 4/6![Southwest logo]()
$351
This Delta deal was found by Cheapflights users on 4/8. 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 5/253:55 pm
BOS
- BOI
1 stop8h 18m
Delta
Mon 6/19:18 pm
BOI
- BOS
1 stop8h 15m
Delta
Deal found 4/8![Delta logo]()
$354
This Alaska Airlines deal was found by Cheapflights users on 4/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:20 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Sun 5/179:00 am
BOI
- BOS
1 stop19h 20m
Alaska Airlines
Deal found 4/5![Alaska Airlines logo]()
$345
This Southwest deal was found by Cheapflights users on 4/6. 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 6/124:30 pm
BOS
- BOI
1 stop9h 25m
Southwest
Mon 6/157:40 pm
BOI
- BOS
2 stops10h 20m
Southwest
Deal found 4/6![Southwest logo]()
$396
This United Airlines deal was found by Cheapflights users on 4/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:09 am
BOS
- SUN
1 stop8h 26m
United Airlines
Mon 4/272:24 pm
SUN
- BOS
1 stop7h 35m
United Airlines
Deal found 4/7![United Airlines logo]()
$501
This Alaska Airlines deal was found by Cheapflights users on 4/7. 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.
Thu 5/147:20 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Sun 5/248:51 pm
BOI
- BOS
1 stop8h 50m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$345
This Delta deal was found by Cheapflights users on 4/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:15 am
BOS
- BOI
1 stop10h 19m
Delta
Sat 6/62:23 pm
BOI
- BOS
1 stop7h 31m
Delta
Deal found 4/6![Delta logo]()
$398
This American Airlines deal was found by Cheapflights users on 4/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/172:27 pm
BOS
- IDA
1 stop9h 48m
American Airlines
Wed 6/242:14 pm
IDA
- BOS
1 stop7h 45m
American Airlines
Deal found 4/10![American Airlines logo]()
$541
This Southwest deal was found by Cheapflights users on 4/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/133:10 pm
BOS
- BOI
2 stops11h 15m
Southwest
Fri 6/194:25 pm
BOI
- BOS
1 stop6h 35m
Southwest
Deal found 4/5![Southwest logo]()
$416
This United Airlines deal was found by Cheapflights users on 4/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:45 am
BOS
- WYS
2 stops28h 43m
United Airlines
Tue 5/122:03 pm
WYS
- BOS
1 stop7h 56m
United Airlines
Deal found 4/5![United Airlines logo]()
$516
This Delta deal was found by Cheapflights users on 4/5. 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.
Thu 4/236:15 am
BOS
- IDA
1 stop8h 11m
Delta
Sun 5/36:58 pm
IDA
- BOS
1 stop9h 02m
Delta
Deal found 4/5![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 4/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:15 pm
BOS
- JAC
1 stop7h 47m
United Airlines
Sat 9/128:00 am
JAC
- BOS
2 stops15h 05m
United Airlines
Deal found 4/9![United Airlines logo]()
$518
This Southwest deal was found by Cheapflights users on 4/6. 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.
Sat 6/202:10 pm
BOS
- BOI
2 stops11h 45m
Southwest
Sat 7/410:25 am
BOI
- BOS
2 stops10h 35m
Southwest
Deal found 4/6![Southwest logo]()
$440
This Delta deal was found by Cheapflights users on 4/5. 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 5/36:15 am
BOS
- SUN
1 stop7h 46m
Delta
Sun 5/103:20 pm
SUN
- BOS
1 stop6h 38m
Delta
Deal found 4/5![Delta logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 4/9. 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 5/306:00 am
BOS
- BOI
2 stops13h 43m
Alaska Airlines
Sat 6/66:07 pm
BOI
- BOS
1 stop11h 34m
Alaska Airlines
Deal found 4/9![Alaska Airlines logo]()
$414
This United Airlines deal was found by Cheapflights users on 4/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:00 am
BOS
- IDA
3 stops11h 29m
United Airlines
Sat 8/2910:35 am
IDA
- BOS
2 stops12h 30m
United Airlines
Deal found 4/8![United Airlines logo]()
$555
This Delta deal was found by Cheapflights users on 4/5. 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.
Thu 4/2310:20 am
BOS
- JAC
1 stop7h 53m
Delta
Wed 4/291:09 pm
JAC
- BOS
1 stop8h 48m
Delta
Deal found 4/5![Delta logo]()
$419
This Alaska Airlines deal was found by Cheapflights users on 4/7. 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.
Tue 6/97:11 pm
BOS
- SUN
1 stop16h 27m
Alaska Airlines
Fri 6/1210:20 am
SUN
- BOS
1 stop11h 39m
Alaska Airlines
Deal found 4/7![Alaska Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 4/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:45 am
BOS
- WYS
1 stop7h 35m
United Airlines
Sat 9/55:45 pm
WYS
- BOS
1 stop18h 02m
United Airlines
Deal found 4/5![United Airlines logo]()
$577
Last-minute flights from Boston to IdahoDiscover last-minute flight deals from Boston to Idaho. Data last updated April 10, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Idaho. Data last updated April 10, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 4/8. 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.
Wed 4/295:35 am
BOS
- GEG
1 stop7h 40m
Southwest
Sat 5/910:45 am
GEG
- BOS
1 stop10h 05m
Southwest
Deal found 4/8![Southwest logo]()
$293
This Southwest deal was found by Cheapflights users on 4/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/35:15 am
BOS
- BOI
1 stop7h 10m
Southwest
Wed 5/63:15 pm
BOI
- BOS
1 stop6h 50m
Southwest
Deal found 4/7![Southwest logo]()
$315
This American Airlines deal was found by Cheapflights users on 4/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:13 am
BOS
- GEG
1 stop11h 06m
American Airlines
Tue 5/121:13 pm
GEG
- BOS
1 stop8h 12m
American Airlines
Deal found 4/6![American Airlines logo]()
$300
This American Airlines deal was found by Cheapflights users on 4/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:30 am
BOS
- GEG
1 stop9h 02m
American Airlines
Thu 5/71:13 pm
GEG
- BOS
1 stop8h 12m
American Airlines
Deal found 4/6![American Airlines logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 4/6. 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.
Tue 5/126:42 pm
BOS
- GEG
1 stop8h 13m
Alaska Airlines
Sat 5/168:38 pm
GEG
- BOS
1 stop8h 03m
Alaska Airlines
Deal found 4/6![Alaska Airlines logo]()
$315
This American Airlines deal was found by Cheapflights users on 4/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:26 am
BOS
- GEG
1 stop11h 29m
American Airlines
Tue 5/196:34 am
GEG
- BOS
2 stops11h 26m
American Airlines
Deal found 4/7![American Airlines logo]()
$320
This American Airlines deal was found by Cheapflights users on 4/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:00 am
BOS
- BOI
1 stop11h 07m
American Airlines
Sat 5/303:11 pm
BOI
- BOS
1 stop7h 04m
American Airlines
Deal found 4/7![American Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 4/9. 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.
Wed 5/278:10 am
BOS
- BOI
1 stop7h 08m
Delta
Wed 6/35:45 am
BOI
- BOS
1 stop8h 04m
Delta
Deal found 4/9![Delta logo]()
$285
This American Airlines deal was found by Cheapflights users on 4/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:00 am
BOS
- BOI
1 stop10h 07m
American Airlines
Tue 6/23:11 pm
BOI
- BOS
1 stop7h 04m
American Airlines
Deal found 4/6![American Airlines logo]()
$289
This American Airlines deal was found by Cheapflights users on 4/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
BOS
- BOI
2 stops10h 20m
American Airlines
Sat 5/303:11 pm
BOI
- BOS
1 stop7h 04m
American Airlines
Deal found 4/9![American Airlines logo]()
$290
This Delta deal was found by Cheapflights users on 4/7. 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 5/308:10 am
BOS
- GEG
1 stop8h 01m
Delta
Wed 6/107:08 pm
GEG
- BOS
1 stop7h 57m
Delta
Deal found 4/7![Delta logo]()
$313
This American Airlines deal was found by Cheapflights users on 4/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/307:00 am
BOS
- BOI
1 stop9h 20m
American Airlines
Sat 6/63:11 pm
BOI
- BOS
1 stop7h 04m
American Airlines
Deal found 4/8![American Airlines logo]()
$316
One-way flights from Boston to IdahoSearch for one-way flight options from Boston to Idaho. Find affordable one-way fares based on user searches. Data last updated April 10, 2026.
Search for one-way flight options from Boston to Idaho. Find affordable one-way fares based on user searches. Data last updated April 10, 2026.
This Trip.com deal was found by Cheapflights users on 4/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:05 pm
BOS
- BOI
1 stop8h 54m
Alaska Airlines
Deal found 4/5![Alaska Airlines logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:55 pm
BOS
- GEG
2 stops34h 34m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:01 pm
BOS
- GEG
2 stops35h 28m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$140
This United Airlines deal was found by Cheapflights users on 4/6. 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.
Wed 5/67:35 am
BOS
- BOI
1 stop11h 13m
United Airlines
Deal found 4/6![United Airlines logo]()
$143
This American Airlines deal was found by Cheapflights users on 4/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/272:27 pm
BOS
- GEG
1 stop9h 16m
American Airlines
Deal found 4/6![American Airlines logo]()
$147
This United Airlines deal was found by Cheapflights users on 4/6. 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.
Tue 5/52:22 pm
BOS
- BOI
2 stops10h 28m
United Airlines
Deal found 4/6![United Airlines logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 4/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/69:34 am
BOS
- BOI
2 stops28h 53m
Frontier
Deal found 4/7![Frontier logo]()
$150
This American Airlines deal was found by Cheapflights users on 4/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/93:05 pm
BOS
- GEG
2 stops11h 04m
American Airlines
Deal found 4/8![American Airlines logo]()
$152
This American Airlines deal was found by Cheapflights users on 4/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/93:05 pm
BOS
- BOI
2 stops10h 36m
American Airlines
Deal found 4/6![American Airlines logo]()
$152
This Delta deal was found by Cheapflights users on 4/7. 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 5/98:10 am
BOS
- BOI
1 stop7h 08m
Delta
Deal found 4/7![Delta logo]()
$153
This Delta deal was found by Cheapflights users on 4/5. 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.
Mon 5/46:45 pm
BOS
- GEG
1 stop8h 35m
Delta
Deal found 4/5![Delta logo]()
$155
This American Airlines deal was found by Cheapflights users on 4/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/12:02 pm
BOS
- GEG
1 stop9h 31m
American Airlines
Deal found 4/6![American Airlines logo]()
$164
Find flight deals from Boston to Idaho
Keep the following information in mind while searching for Boston to Idaho flight deals. Data was last updated April 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $285 (Delta) |
One-way from | $138 (Trip.com) |
Popular in | December |
Cheapest in | January |
Average price | $477 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston 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 April 10, 2026.
Use the filters below to find and compare flights from Boston to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Tue 6/2
2:25 pm-10:55 pm
2 stops11h 30m
Spokane
Sat 6/6
2:20 pm-12:35 am
1 stop7h 15m
$298
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Wed 4/29
2:25 pm-10:55 pm
2 stops11h 30m
Spokane
Sat 5/9
5:45 am-9:05 pm
2 stops12h 20m
$303
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Mon 6/1
8:05 am-9:45 pm
1 stop16h 40m
Spokane
Tue 6/9
7:01 am-5:44 am
1 stop19h 43m
$309
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Thu 6/11
7:15 am-1:18 pm
1 stop9h 03m
Spokane
Mon 6/15
5:05 pm-6:05 am
1 stop10h 00m
$309
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Mon 6/1
8:05 am-9:45 pm
1 stop16h 40m
Spokane
Mon 6/8
7:01 am-5:44 am
1 stop19h 43m
$309
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Tue 5/12
6:42 pm-11:55 pm
1 stop8h 13m
Spokane
Sat 5/16
8:38 pm-7:41 am
1 stop8h 03m
$315
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Sat 5/9
7:00 am-3:33 pm
1 stop10h 33m
Boise Air Term. Gowen Fld
Tue 5/12
12:15 pm-11:59 pm
1 stop9h 44m
$315
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Fri 8/7
7:10 am-1:21 pm
1 stop9h 11m
Spokane
Mon 8/10
5:00 pm-6:09 am
1 stop10h 09m
$318
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Sun 6/7
5:55 am-11:40 am
1 stop8h 45m
Spokane
Thu 6/11
2:23 pm-11:57 pm
1 stop6h 34m
$329
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Thu 5/14
7:20 am-3:34 pm
1 stop10h 14m
Boise Air Term. Gowen Fld
Sun 5/17
9:00 am-6:20 am
1 stop19h 20m
$345
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Boston to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Boston with our price prediction graph.
BOS-BOI
BOS-GEG
BOS-IDA
BOS-JAC
BOS-SUN
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 Boston to Idaho
BOS-USID
BOS-BOI
BOS-GEG
BOS-IDA
BOS-JAC
What is the cheapest month to book a flight from Boston to Idaho?
Currently, September is the cheapest month in which you can book a flight from Boston to Idaho (average of $216). Flying from Boston to Idaho in March is currently the most expensive (average of $347). 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 Boston to Idaho?
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 April 10, 2026.
Read reviews from past customers who have flown Southwest,Alaska Airlines, andDelta from Boston to Idaho. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Boston to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Boston 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 Boston to Idaho by cabin class
Find flights from Boston to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Idaho flights
Browse other Boston and Idaho flight options. Last updated on April 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Boston to Idaho flights
Consider these flights traveling from Boston to Idaho.
Top 5 airlines flying from Boston to Idaho
Discover the top 5 airlines that operate flights from Boston 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 April 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$260 | Average$556 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$264 | Average$495 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$282 | Average$587 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$296 | Average$590 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$311 | Average$466 | FlexibilityNo cancel fee | On-time63% |