$148+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BOI
Apr 17 — Apr 241
Round-trip
1 adult, Economy
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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 March 18, 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 March 18, 2026.
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 5/55:35 am
BOS
- GEG
1 stop7h 40m
Southwest
Sat 5/91:10 pm
GEG
- BOS
1 stop7h 40m
Southwest
Deal found 3/13![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:45 am
BOS
- BOI
1 stop8h 22m
Delta
Wed 4/225:34 am
BOI
- BOS
1 stop6h 25m
Delta
Deal found 3/17![Delta logo]()
$313
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/75:35 am
BOS
- BOI
1 stop7h 20m
Southwest
Tue 4/143:15 pm
BOI
- BOS
1 stop6h 50m
Southwest
Deal found 3/14![Southwest logo]()
$315
This Alaska Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/147:15 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Wed 4/1511:58 am
BOI
- BOS
1 stop10h 01m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/145:35 am
BOS
- BOI
1 stop7h 20m
Southwest
Tue 4/286:00 am
BOI
- BOS
2 stops10h 35m
Southwest
Deal found 3/15![Southwest logo]()
$318
This American Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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
Sat 5/96:34 am
GEG
- BOS
2 stops11h 27m
American Airlines
Deal found 3/13![American Airlines logo]()
$320
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:10 am
BOS
- BOI
1 stop10h 53m
Delta
Tue 4/2111:35 pm
BOI
- BOS
1 stop7h 59m
Delta
Deal found 3/17![Delta logo]()
$323
This American Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 5/133:18 pm
BOS
- BOI
1 stop9h 36m
American Airlines
Tue 5/191:41 pm
BOI
- BOS
1 stop8h 23m
American Airlines
Deal found 3/14![American Airlines logo]()
$324
This American Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 4/143:18 pm
BOS
- BOI
1 stop9h 20m
American Airlines
Tue 4/281:29 pm
BOI
- BOS
1 stop8h 56m
American Airlines
Deal found 3/13![American Airlines logo]()
$327
This Southwest deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/146:20 am
BOS
- BOI
2 stops11h 05m
Southwest
Tue 4/213:15 pm
BOI
- BOS
1 stop6h 50m
Southwest
Deal found 3/15![Southwest logo]()
$328
This Alaska Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 4/157:15 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Wed 4/2912:15 pm
BOI
- BOS
1 stop9h 44m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$333
This Alaska Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/287:00 am
BOS
- GEG
1 stop9h 23m
Alaska Airlines
Wed 4/295:00 am
GEG
- BOS
1 stop9h 42m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$357
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 March 18, 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 March 18, 2026.
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 5/25:15 am
BOS
- BOI
1 stop7h 10m
Southwest
Tue 5/53:15 pm
BOI
- BOS
1 stop6h 50m
Southwest
Deal found 3/14![Southwest logo]()
$313
This Alaska Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 4/147:15 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Wed 4/1511:58 am
BOI
- BOS
1 stop10h 01m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$317
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/63:05 pm
BOS
- GEG
1 stop9h 06m
United Airlines
Mon 4/131:46 pm
GEG
- BOS
1 stop7h 13m
United Airlines
Deal found 3/12![United Airlines logo]()
$405
This Delta deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:15 am
BOS
- SUN
1 stop7h 46m
Delta
Mon 4/2012:42 pm
SUN
- BOS
2 stops9h 10m
Delta
Deal found 3/16![Delta logo]()
$406
This American Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1311:34 am
BOS
- IDA
2 stops14h 05m
American Airlines
Mon 5/187:48 am
IDA
- BOS
2 stops14h 16m
American Airlines
Deal found 3/17![American Airlines logo]()
$499
This Alaska Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:00 am
BOS
- BOI
1 stop10h 33m
Alaska Airlines
Tue 4/2812:15 pm
BOI
- BOS
1 stop9h 44m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/132:25 pm
BOS
- BOI
2 stops11h 05m
Southwest
Tue 5/196:00 am
BOI
- BOS
2 stops10h 35m
Southwest
Deal found 3/16![Southwest logo]()
$395
This Delta deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 6/23:55 pm
BOS
- BOI
1 stop9h 58m
Delta
Sun 6/77:30 pm
BOI
- BOS
1 stop9h 05m
Delta
Deal found 3/15![Delta logo]()
$412
This United Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/1410:05 am
BOS
- BOI
2 stops13h 17m
United Airlines
Wed 4/159:26 am
BOI
- BOS
1 stop10h 02m
United Airlines
Deal found 3/15![United Airlines logo]()
$438
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/262:25 pm
BOS
- BOI
2 stops11h 05m
Southwest
Sat 5/302:50 pm
BOI
- BOS
1 stop7h 00m
Southwest
Deal found 3/12![Southwest logo]()
$402
This Alaska Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/137:15 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Fri 5/112:15 pm
BOI
- BOS
1 stop9h 44m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$414
This Delta deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:15 am
BOS
- JAC
1 stop7h 59m
Delta
Mon 4/201:00 pm
JAC
- BOS
1 stop8h 57m
Delta
Deal found 3/16![Delta logo]()
$419
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 5/161:50 pm
BOS
- BOI
2 stops11h 00m
Southwest
Tue 5/193:15 pm
BOI
- BOS
1 stop6h 50m
Southwest
Deal found 3/14![Southwest logo]()
$406
This American Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 3/316:45 am
BOS
- IDA
1 stop9h 03m
American Airlines
Sat 4/46:05 am
IDA
- BOS
2 stops14h 07m
American Airlines
Deal found 3/15![American Airlines logo]()
$514
This Alaska Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 6/68:05 am
BOS
- GEG
1 stop16h 40m
Alaska Airlines
Sat 6/138:12 am
GEG
- BOS
1 stop18h 31m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$427
This Delta deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:35 am
BOS
- JAC
2 stops12h 38m
Delta
Tue 5/1211:35 am
JAC
- BOS
2 stops10h 19m
Delta
Deal found 3/16![Delta logo]()
$429
This Southwest deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:15 am
BOS
- GEG
1 stop7h 50m
Southwest
Sat 6/132:20 pm
GEG
- BOS
1 stop7h 15m
Southwest
Deal found 3/17![Southwest logo]()
$424
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:00 am
BOS
- IDA
1 stop10h 27m
Delta
Sat 9/56:50 pm
IDA
- BOS
1 stop9h 19m
Delta
Deal found 3/17![Delta logo]()
$454
This Alaska Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/36:10 pm
BOS
- GEG
1 stop8h 49m
Alaska Airlines
Wed 4/87:31 pm
GEG
- BOS
1 stop7h 22m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$457
This United Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/224:50 pm
BOS
- IDA
1 stop19h 03m
United Airlines
Mon 4/272:30 pm
IDA
- BOS
1 stop7h 29m
United Airlines
Deal found 3/14![United Airlines logo]()
$567
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/65:05 pm
BOS
- GEG
2 stops11h 20m
Southwest
Mon 4/135:35 pm
GEG
- BOS
2 stops11h 40m
Southwest
Deal found 3/12![Southwest logo]()
$429
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/131:10 pm
BOS
- IDA
2 stops11h 32m
Delta
Mon 5/186:54 pm
IDA
- BOS
1 stop9h 26m
Delta
Deal found 3/17![Delta logo]()
$464
This Southwest deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:05 pm
BOS
- GEG
1 stop8h 15m
Southwest
Mon 5/185:35 pm
GEG
- BOS
2 stops11h 40m
Southwest
Deal found 3/17![Southwest logo]()
$436
This United Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 5/239:30 am
BOS
- WYS
1 stop9h 07m
United Airlines
Tue 5/262:19 pm
WYS
- BOS
2 stops8h 40m
United Airlines
Deal found 3/15![United Airlines logo]()
$591
This Expedia deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:00 am
BOS
- IDA
1 stop9h 17m
Alaska Airlines
Sat 5/304:03 pm
IDA
- BOS
1 stop12h 17m
Alaska Airlines
Deal found 3/17![Alaska Airlines logo]()
$489
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/71:10 pm
BOS
- SUN
2 stops10h 49m
Delta
Mon 5/117:30 am
SUN
- BOS
2 stops10h 34m
Delta
Deal found 3/17![Delta logo]()
$470
This Southwest deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/1611:35 am
BOS
- GEG
2 stops13h 45m
Southwest
Mon 4/205:35 pm
GEG
- BOS
2 stops11h 40m
Southwest
Deal found 3/15![Southwest logo]()
$448
This Alaska Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:30 am
BOS
- JAC
1 stop26h 13m
Alaska Airlines
Sat 9/51:35 pm
JAC
- BOS
1 stop15h 56m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$509
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 3/287:00 am
BOS
- JAC
1 stop8h 21m
United Airlines
Wed 4/17:00 am
JAC
- BOS
2 stops12h 54m
United Airlines
Deal found 3/13![United Airlines logo]()
$634
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 5/283:45 pm
BOS
- GEG
2 stops11h 50m
Southwest
Sun 6/72:40 pm
GEG
- BOS
2 stops12h 20m
Southwest
Deal found 3/14![Southwest logo]()
$459
Last-minute flights from Boston to IdahoDiscover last-minute flight deals from Boston to Idaho. Data last updated March 18, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Idaho. Data last updated March 18, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/37:09 am
BOS
- GEG
1 stop8h 31m
United Airlines
Wed 4/81:46 pm
GEG
- BOS
1 stop7h 13m
United Airlines
Deal found 3/13![United Airlines logo]()
$362
This Delta deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/45:15 pm
BOS
- BOI
1 stop8h 00m
Delta
Sat 4/116:00 am
BOI
- BOS
1 stop6h 20m
Delta
Deal found 3/14![Delta logo]()
$337
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/75:35 am
BOS
- BOI
1 stop7h 20m
Southwest
Tue 4/143:15 pm
BOI
- BOS
1 stop6h 50m
Southwest
Deal found 3/14![Southwest logo]()
$315
This American Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 4/146:30 am
BOS
- BOI
1 stop8h 19m
American Airlines
Tue 4/281:53 pm
BOI
- BOS
1 stop8h 11m
American Airlines
Deal found 3/13![American Airlines logo]()
$313
This Alaska Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/147:15 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Wed 4/1511:58 am
BOI
- BOS
1 stop10h 01m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/145:35 am
BOS
- BOI
1 stop7h 20m
Southwest
Tue 4/286:00 am
BOI
- BOS
2 stops10h 35m
Southwest
Deal found 3/15![Southwest logo]()
$318
This Southwest deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/146:20 am
BOS
- BOI
2 stops11h 05m
Southwest
Tue 4/213:15 pm
BOI
- BOS
1 stop6h 50m
Southwest
Deal found 3/15![Southwest logo]()
$328
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 4/148:05 am
BOS
- BOI
1 stop8h 21m
Delta
Mon 4/276:16 pm
BOI
- BOS
1 stop9h 44m
Delta
Deal found 3/13![Delta logo]()
$343
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/145:50 am
BOS
- GEG
1 stop10h 14m
Delta
Sat 4/185:10 pm
GEG
- BOS
1 stop9h 50m
Delta
Deal found 3/17![Delta logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 4/157:15 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Wed 4/2912:15 pm
BOI
- BOS
1 stop9h 44m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$333
This American Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/166:30 am
BOS
- GEG
1 stop9h 02m
American Airlines
Mon 4/201:22 pm
GEG
- BOS
1 stop8h 03m
American Airlines
Deal found 3/15![American Airlines logo]()
$381
This Alaska Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/287:00 am
BOS
- GEG
1 stop9h 23m
Alaska Airlines
Wed 4/295:00 am
GEG
- BOS
1 stop9h 42m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$357
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 March 18, 2026.
Search for one-way flight options from Boston to Idaho. Find affordable one-way fares based on user searches. Data last updated March 18, 2026.
This American Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:30 am
BOS
- GEG
1 stop9h 02m
American Airlines
Deal found 3/16![American Airlines logo]()
$148
This American Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:00 am
BOS
- BOI
1 stop9h 03m
American Airlines
Deal found 3/17![American Airlines logo]()
$157
This Alaska Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:15 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$159
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:25 pm
BOS
- BOI
2 stops9h 45m
Southwest
Deal found 3/16![Southwest logo]()
$162
This United Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/255:30 am
BOS
- BOI
1 stop11h 54m
United Airlines
Deal found 3/15![United Airlines logo]()
$167
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/252:37 pm
BOS
- GEG
2 stops10h 34m
United Airlines
Deal found 3/17![United Airlines logo]()
$174
This Alaska Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/114:27 pm
BOS
- BOI
1 stop9h 31m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$175
This Delta deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/153:10 pm
BOS
- GEG
1 stop8h 55m
Delta
Deal found 3/16![Delta logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 5/208:44 am
BOS
- BOI
2 stops29h 46m
Frontier
Deal found 3/14![Frontier logo]()
$179
This American Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/266:00 am
BOS
- BOI
1 stop11h 20m
American Airlines
Deal found 3/12![American Airlines logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/159:18 am
BOS
- BOI
2 stops27h 50m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$195
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:30 am
BOS
- GEG
1 stop8h 42m
United Airlines
Deal found 3/17![United Airlines logo]()
$196
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 March 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $297 (Southwest) |
One-way from | $148 (American Airlines) |
Popular in | December |
Cheapest in | January |
Average price | $539 |
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 March 18, 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
Quickest round-trip
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Sat 5/2
5:15 am-10:25 am
1 stop7h 10m
Boise Air Term. Gowen Fld
Tue 5/5
3:15 pm-12:05 am
1 stop6h 50m
$313
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Tue 4/14
7:15 am-3:29 pm
1 stop10h 14m
Boise Air Term. Gowen Fld
Wed 4/15
11:58 am-11:59 pm
1 stop10h 01m
$317
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Thu 4/23
7:00 am-3:33 pm
1 stop10h 33m
Boise Air Term. Gowen Fld
Tue 4/28
12:15 pm-11:59 pm
1 stop9h 44m
$352
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Wed 5/13
2:25 pm-11:30 pm
2 stops11h 05m
Boise Air Term. Gowen Fld
Tue 5/19
6:00 am-6:35 pm
2 stops10h 35m
$395
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Tue 5/26
2:25 pm-11:30 pm
2 stops11h 05m
Boise Air Term. Gowen Fld
Sat 5/30
2:50 pm-11:50 pm
1 stop7h 00m
$402
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Mon 4/6
3:05 pm-9:11 pm
1 stop9h 06m
Spokane
Mon 4/13
1:46 pm-11:59 pm
1 stop7h 13m
$405
BostonHailey
BOS - SUN
BOSSUN
Boston Logan Intl
Mon 4/13
6:15 am-12:01 pm
1 stop7h 46m
Hailey Sun Valley-Friedman
Mon 4/20
12:42 pm-11:52 pm
2 stops9h 10m
$406
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Sat 5/16
1:50 pm-10:50 pm
2 stops11h 00m
Boise Air Term. Gowen Fld
Tue 5/19
3:15 pm-12:05 am
1 stop6h 50m
$406
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Tue 6/2
3:55 pm-11:53 pm
1 stop9h 58m
Boise Air Term. Gowen Fld
Sun 6/7
7:30 pm-6:35 am
1 stop9h 05m
$412
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Mon 4/13
7:15 am-3:29 pm
1 stop10h 14m
Boise Air Term. Gowen Fld
Fri 5/1
12:15 pm-11:59 pm
1 stop9h 44m
$414
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-SUN
BOS-IDA
BOS-JAC
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-SUN
BOS-IDA
What is the cheapest month to book a flight from Boston to Idaho?
Currently, April is the cheapest month in which you can book a flight from Boston to Idaho (average of $204). Flying from Boston to Idaho in March is currently the most expensive (average of $354). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing 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 18, 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.
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
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 March 18, 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 March 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$236 | Average$542 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$264 | Average$483 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$282 | Average$579 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$296 | Average$562 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$370 | Average$466 | FlexibilityNo cancel fee | On-time63% |