$113+ 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BOI
Jul 16 — Jul 231
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 June 16, 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 June 16, 2026.
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 8/186:14 am
BOS
- BOI
1 stop10h 06m
American Airlines
Sat 8/222:58 pm
BOI
- BOS
1 stop7h 00m
American Airlines
Deal found 6/11![American Airlines logo]()
$211
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:40 am
BOS
- BOI
1 stop10h 23m
Delta
Tue 9/1512:14 pm
BOI
- BOS
1 stop10h 08m
Delta
Deal found 6/11![Delta logo]()
$229
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/95:55 pm
BOS
- BOI
1 stop7h 51m
Delta
Wed 10/72:35 pm
BOI
- BOS
1 stop7h 45m
Delta
Deal found 6/11![Delta logo]()
$241
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/95:55 pm
BOS
- BOI
1 stop7h 51m
Delta
Sat 10/103:22 pm
BOI
- BOS
1 stop6h 31m
Delta
Deal found 6/11![Delta logo]()
$255
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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.
Fri 9/117:12 am
BOS
- BOI
1 stop10h 18m
Alaska Airlines
Tue 9/157:48 pm
BOI
- BOS
1 stop9h 51m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$285
This Southwest deal was found by Cheapflights users on 6/16. 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 8/129:05 am
BOS
- BOI
1 stop12h 40m
Southwest
Tue 8/182:40 pm
BOI
- BOS
1 stop7h 25m
Southwest
Deal found 6/16![Southwest logo]()
$290
This Delta deal was found by Cheapflights users on 6/13. 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.
Sun 9/137:05 am
BOS
- BOI
1 stop9h 17m
Delta
Wed 9/236:40 pm
BOI
- BOS
1 stop9h 50m
Delta
Deal found 6/13![Delta logo]()
$305
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 8/182:45 pm
BOS
- BOI
2 stops10h 25m
Southwest
Sat 8/221:50 pm
BOI
- BOS
1 stop8h 35m
Southwest
Deal found 6/11![Southwest logo]()
$308
This Delta deal was found by Cheapflights users on 6/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:45 am
BOS
- BOI
1 stop9h 27m
Delta
Wed 6/2411:55 am
BOI
- BOS
1 stop10h 26m
Delta
Deal found 6/12![Delta logo]()
$312
This Alaska Airlines deal was found by Cheapflights users on 6/15. 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 12/85:06 pm
BOS
- BOI
1 stop8h 53m
Alaska Airlines
Wed 12/96:00 am
BOI
- BOS
1 stop8h 46m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$315
This American Airlines deal was found by Cheapflights users on 6/15. 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 11/38:40 pm
BOS
- JAC
2 stops17h 34m
American Airlines
Tue 11/101:11 pm
JAC
- BOS
2 stops17h 32m
American Airlines
Deal found 6/15![American Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am
BOS
- IDA
1 stop8h 27m
Delta
Tue 11/36:45 pm
IDA
- BOS
1 stop9h 26m
Delta
Deal found 6/11![Delta logo]()
$369
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 June 16, 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 June 16, 2026.
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:40 am
BOS
- BOI
1 stop10h 23m
Delta
Tue 9/1512:14 pm
BOI
- BOS
1 stop10h 08m
Delta
Deal found 6/11![Delta logo]()
$229
This Alaska Airlines deal was found by Cheapflights users on 6/14. 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.
Tue 12/85:06 pm
BOS
- BOI
1 stop8h 53m
Alaska Airlines
Wed 12/96:00 am
BOI
- BOS
1 stop8h 46m
Alaska Airlines
Deal found 6/14![Alaska Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 6/15. 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 8/49:05 am
BOS
- BOI
1 stop12h 40m
Southwest
Wed 8/122:40 pm
BOI
- BOS
1 stop7h 25m
Southwest
Deal found 6/15![Southwest logo]()
$353
This United Airlines deal was found by Cheapflights users on 6/15. 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 12/811:30 am
BOS
- BOI
2 stops11h 46m
United Airlines
Wed 12/92:43 pm
BOI
- BOS
1 stop6h 59m
United Airlines
Deal found 6/15![United Airlines logo]()
$400
This Sun Country Air deal was found by Cheapflights users on 6/12. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/911:55 am
BOS
- GEG
1 stop8h 51m
Sun Country Air
Sun 7/194:47 pm
GEG
- BOS
1 stop13h 46m
Sun Country Air
Deal found 6/12![Sun Country Air logo]()
$525
This American Airlines deal was found by Cheapflights users on 6/15. 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.
Sat 10/310:30 am
BOS
- IDA
2 stops12h 50m
American Airlines
Sat 10/101:43 pm
IDA
- BOS
1 stop8h 11m
American Airlines
Deal found 6/15![American Airlines logo]()
$546
This Delta deal was found by Cheapflights users on 6/15. 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.
Fri 9/185:55 am
BOS
- BOI
1 stop9h 43m
Delta
Sat 9/264:00 pm
BOI
- BOS
1 stop11h 33m
Delta
Deal found 6/15![Delta logo]()
$300
This Alaska Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 9/46:17 pm
BOS
- BOI
1 stop21h 45m
Alaska Airlines
Tue 9/84:27 pm
BOI
- BOS
1 stop11h 42m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$327
This Southwest deal was found by Cheapflights users on 6/15. 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.
Fri 9/182:15 pm
BOS
- BOI
2 stops10h 20m
Southwest
Sat 9/264:00 pm
BOI
- BOS
2 stops12h 00m
Southwest
Deal found 6/15![Southwest logo]()
$395
This United Airlines deal was found by Cheapflights users on 6/13. 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.
Tue 8/1812:41 pm
BOS
- BOI
2 stops11h 59m
United Airlines
Sat 8/2210:36 am
BOI
- BOS
2 stops12h 39m
United Airlines
Deal found 6/13![United Airlines logo]()
$405
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 6/265:55 am
BOS
- BOI
1 stop9h 56m
Delta
Sun 6/286:42 pm
BOI
- BOS
1 stop9h 23m
Delta
Deal found 6/11![Delta logo]()
$372
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/85:55 am
BOS
- BOI
1 stop9h 49m
Delta
Fri 10/94:50 pm
BOI
- BOS
1 stop11h 09m
Delta
Deal found 6/11![Delta logo]()
$372
This Alaska Airlines deal was found by Cheapflights users on 6/14. 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 9/57:59 pm
BOS
- JAC
1 stop17h 16m
Alaska Airlines
Sat 9/122:10 pm
JAC
- BOS
1 stop13h 59m
Alaska Airlines
Deal found 6/14![Alaska Airlines logo]()
$413
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Thu 11/126:00 am
BOS
- JAC
2 stops9h 29m
United Airlines
Mon 11/162:40 pm
JAC
- BOS
1 stop7h 02m
United Airlines
Deal found 6/15![United Airlines logo]()
$418
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 10/206:37 pm
BOS
- SUN
1 stop18h 34m
Alaska Airlines
Fri 10/2311:53 am
SUN
- BOS
1 stop10h 01m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$430
This Delta deal was found by Cheapflights users on 6/15. 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 10/206:00 am
BOS
- SUN
1 stop10h 54m
Delta
Fri 10/231:20 pm
SUN
- BOS
1 stop8h 29m
Delta
Deal found 6/15![Delta logo]()
$401
This Sun Country Air deal was found by Cheapflights users on 6/15. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1610:35 am
BOS
- GEG
1 stop7h 31m
Sun Country Air
Sun 7/194:47 pm
GEG
- BOS
1 stop13h 46m
Sun Country Air
Deal found 6/15![Sun Country Air logo]()
$545
This Southwest deal was found by Cheapflights users on 6/15. 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.
Fri 7/3111:35 am
BOS
- GEG
1 stop14h 55m
Southwest
Sun 8/96:35 am
GEG
- BOS
1 stop7h 15m
Southwest
Deal found 6/15![Southwest logo]()
$503
This United Airlines deal was found by Cheapflights users on 6/15. 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 11/173:19 pm
BOS
- JAC
1 stop7h 43m
United Airlines
Wed 11/182:40 pm
JAC
- BOS
1 stop7h 02m
United Airlines
Deal found 6/15![United Airlines logo]()
$473
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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.
Sat 9/59:33 am
BOS
- GEG
2 stops15h 52m
Alaska Airlines
Mon 9/77:03 am
GEG
- BOS
1 stop19h 46m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$441
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Wed 10/149:51 am
BOS
- SUN
2 stops13h 34m
United Airlines
Sun 10/182:38 pm
SUN
- BOS
1 stop7h 21m
United Airlines
Deal found 6/15![United Airlines logo]()
$475
This Delta deal was found by Cheapflights users on 6/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:05 am
BOS
- IDA
1 stop8h 09m
Delta
Sat 10/36:57 pm
IDA
- BOS
2 stops14h 18m
Delta
Deal found 6/12![Delta logo]()
$439
This Southwest deal was found by Cheapflights users on 6/15. 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.
Mon 7/205:45 am
BOS
- GEG
2 stops10h 50m
Southwest
Sat 7/255:50 am
GEG
- BOS
2 stops11h 30m
Southwest
Deal found 6/15![Southwest logo]()
$538
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 8/246:05 am
BOS
- JAC
1 stop8h 10m
Delta
Tue 9/11:10 pm
JAC
- BOS
1 stop8h 47m
Delta
Deal found 6/11![Delta logo]()
$441
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 6/295:30 pm
BOS
- GEG
1 stop8h 55m
Southwest
Fri 7/35:10 pm
GEG
- BOS
2 stops11h 55m
Southwest
Deal found 6/11![Southwest logo]()
$539
This United Airlines deal was found by Cheapflights users on 6/14. 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 9/25:45 am
BOS
- JAC
2 stops14h 56m
United Airlines
Wed 9/98:05 am
JAC
- BOS
2 stops15h 09m
United Airlines
Deal found 6/14![United Airlines logo]()
$492
This Alaska Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 9/125:42 pm
BOS
- JAC
2 stops19h 40m
Alaska Airlines
Sat 9/263:10 pm
JAC
- BOS
2 stops12h 59m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$513
This Delta deal was found by Cheapflights users on 6/15. 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.
Sat 10/36:05 am
BOS
- IDA
1 stop8h 09m
Delta
Sat 10/106:45 pm
IDA
- BOS
1 stop9h 26m
Delta
Deal found 6/15![Delta logo]()
$459
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Tue 12/85:30 am
BOS
- SUN
1 stop10h 06m
United Airlines
Sat 12/122:29 pm
SUN
- BOS
1 stop7h 13m
United Airlines
Deal found 6/14![United Airlines logo]()
$511
This Alaska Airlines deal was found by Cheapflights users on 6/15. 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.
Sat 9/1210:03 am
BOS
- JAC
1 stop27h 19m
Alaska Airlines
Sat 9/192:10 pm
JAC
- BOS
1 stop13h 59m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$523
Last-minute flights from Boston to IdahoDiscover last-minute flight deals from Boston to Idaho. Data last updated June 16, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Idaho. Data last updated June 16, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:45 am
BOS
- BOI
1 stop9h 27m
Delta
Mon 6/295:30 am
BOI
- BOS
1 stop9h 15m
Delta
Deal found 6/12![Delta logo]()
$285
This Delta deal was found by Cheapflights users on 6/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:45 am
BOS
- BOI
1 stop9h 27m
Delta
Wed 6/2411:55 am
BOI
- BOS
1 stop10h 26m
Delta
Deal found 6/12![Delta logo]()
$312
This Delta deal was found by Cheapflights users on 6/14. 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.
Tue 6/235:50 pm
BOS
- GEG
1 stop8h 17m
Delta
Mon 6/295:20 am
GEG
- BOS
1 stop8h 17m
Delta
Deal found 6/14![Delta logo]()
$376
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/311:30 am
BOS
- BOI
1 stop9h 43m
Delta
Fri 7/311:45 pm
BOI
- BOS
1 stop8h 00m
Delta
Deal found 6/11![Delta logo]()
$372
This Delta deal was found by Cheapflights users on 6/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:55 am
BOS
- BOI
1 stop9h 49m
Delta
Sat 10/103:22 pm
BOI
- BOS
1 stop6h 31m
Delta
Deal found 6/12![Delta logo]()
$342
This Delta deal was found by Cheapflights users on 6/14. 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.
Wed 7/86:05 am
BOS
- GEG
1 stop9h 07m
Delta
Sun 7/127:59 pm
GEG
- BOS
1 stop8h 36m
Delta
Deal found 6/14![Delta logo]()
$381
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/97:00 am
BOS
- GEG
1 stop10h 02m
American Airlines
Sat 7/111:59 pm
GEG
- BOS
1 stop16h 35m
American Airlines
Deal found 6/11![American Airlines logo]()
$391
This Delta deal was found by Cheapflights users on 6/15. 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.
Fri 7/103:40 pm
BOS
- GEG
1 stop11h 15m
Delta
Mon 7/1311:30 am
GEG
- BOS
1 stop9h 44m
Delta
Deal found 6/15![Delta logo]()
$398
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Wed 7/156:00 am
BOS
- BOI
1 stop7h 32m
United Airlines
Mon 7/207:05 pm
BOI
- BOS
1 stop9h 16m
United Airlines
Deal found 6/15![United Airlines logo]()
$393
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/282:25 pm
BOS
- GEG
2 stops10h 55m
Southwest
Mon 8/1012:20 pm
GEG
- BOS
1 stop9h 05m
Southwest
Deal found 6/11![Southwest logo]()
$377
This Southwest deal was found by Cheapflights users on 6/13. 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.
Thu 7/304:30 pm
BOS
- BOI
1 stop9h 55m
Southwest
Mon 8/34:25 pm
BOI
- BOS
1 stop6h 40m
Southwest
Deal found 6/13![Southwest logo]()
$397
This Southwest deal was found by Cheapflights users on 6/15. 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.
Fri 7/315:25 am
BOS
- BOI
1 stop13h 50m
Southwest
Fri 8/72:55 pm
BOI
- BOS
1 stop7h 35m
Southwest
Deal found 6/15![Southwest logo]()
$374
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 June 16, 2026.
Search for one-way flight options from Boston to Idaho. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 8/225:51 am
BOS
- BOI
1 stop9h 51m
Delta
Deal found 6/11![Delta logo]()
$113
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/95:55 pm
BOS
- BOI
1 stop7h 51m
Delta
Deal found 6/16![Delta logo]()
$143
This Delta deal was found by Cheapflights users on 6/14. 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.
Mon 7/137:10 am
BOS
- GEG
1 stop9h 11m
Delta
Deal found 6/14![Delta logo]()
$147
This Southwest deal was found by Cheapflights users on 6/15. 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 8/119:05 am
BOS
- BOI
1 stop12h 40m
Southwest
Deal found 6/15![Southwest logo]()
$148
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 6/217:45 am
BOS
- GEG
1 stop10h 55m
Delta
Deal found 6/11![Delta logo]()
$152
This Delta deal was found by Cheapflights users on 6/14. 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.
Wed 8/196:25 am
BOS
- BOI
1 stop10h 24m
Delta
Deal found 6/14![Delta logo]()
$158
This Southwest deal was found by Cheapflights users on 6/15. 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.
Wed 9/302:45 pm
BOS
- BOI
2 stops10h 25m
Southwest
Deal found 6/15![Southwest logo]()
$163
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Tue 7/216:00 am
BOS
- BOI
1 stop7h 32m
United Airlines
Deal found 6/14![United Airlines logo]()
$166
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/155:55 am
BOS
- BOI
1 stop7h 02m
Delta
Deal found 6/11![Delta logo]()
$170
This Southwest deal was found by Cheapflights users on 6/16. 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 8/122:45 pm
BOS
- GEG
2 stops11h 10m
Southwest
Deal found 6/16![Southwest logo]()
$174
This Southwest deal was found by Cheapflights users on 6/12. 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.
Wed 8/192:45 pm
BOS
- BOI
2 stops10h 25m
Southwest
Deal found 6/12![Southwest logo]()
$175
This Southwest deal was found by Cheapflights users on 6/14. 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 7/304:30 pm
BOS
- BOI
1 stop9h 55m
Southwest
Deal found 6/14![Southwest logo]()
$178
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 June 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $211 (American Airlines) |
One-way from | $113 (Delta) |
Popular in | December |
Cheapest in | May |
Average price | $563 |
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 June 16, 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
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Fri 9/11
5:40 am-2:03 pm
1 stop10h 23m
Boise Air Term. Gowen Fld
Tue 9/15
12:14 pm-12:22 am
1 stop10h 08m
$229
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Fri 9/18
5:55 am-1:38 pm
1 stop9h 43m
Boise Air Term. Gowen Fld
Sat 9/26
4:00 pm-5:33 am
1 stop11h 33m
$300
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Tue 12/8
5:06 pm-11:59 pm
1 stop8h 53m
Boise Air Term. Gowen Fld
Wed 12/9
6:00 am-4:46 pm
1 stop8h 46m
$315
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Fri 9/4
6:17 pm-2:02 pm
1 stop21h 45m
Boise Air Term. Gowen Fld
Tue 9/8
4:27 pm-6:09 am
1 stop11h 42m
$327
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Tue 8/4
9:05 am-7:45 pm
1 stop12h 40m
Boise Air Term. Gowen Fld
Wed 8/12
2:40 pm-12:05 am
1 stop7h 25m
$353
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Fri 6/26
5:55 am-1:51 pm
1 stop9h 56m
Boise Air Term. Gowen Fld
Sun 6/28
6:42 pm-6:05 am
1 stop9h 23m
$372
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Wed 7/8
5:55 am-1:44 pm
1 stop9h 49m
Boise Air Term. Gowen Fld
Fri 10/9
4:50 pm-5:59 am
1 stop11h 09m
$372
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Fri 9/18
2:15 pm-10:35 pm
2 stops10h 20m
Boise Air Term. Gowen Fld
Sat 9/26
4:00 pm-6:00 am
2 stops12h 00m
$395
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Tue 12/8
11:30 am-9:16 pm
2 stops11h 46m
Boise Air Term. Gowen Fld
Wed 12/9
2:43 pm-11:42 pm
1 stop6h 59m
$400
BostonHailey
BOS - SUN
BOSSUN
Boston Logan Intl
Tue 10/20
6:00 am-2:54 pm
1 stop10h 54m
Hailey Sun Valley-Friedman
Fri 10/23
1:20 pm-11:49 pm
1 stop8h 29m
$401
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-IDA
BOS-SUN
BOS-GEG
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-IDA
BOS-SUN
BOS-GEG
What is the cheapest month to book a flight from Boston to Idaho?
Currently, August is the cheapest month in which you can book a flight from Boston to Idaho (average of $142). Flying from Boston to Idaho in June is currently the most expensive (average of $306). 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?
How far ahead should I book a flight from Boston to Idaho?
The price you pay for your flight from Boston to Idaho may vary depending on when you book. For the best chance of a lower fare, look to book 59 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 June 16, 2026.
Read reviews from past customers who have flown Alaska Airlines,Southwest, 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.
Food
7.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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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 June 16, 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 June 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$272 | Average$530 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$281 | Average$506 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$293 | Average$588 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$306 | Average$480 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$369 | Average$577 | FlexibilityNo cancel fee | On-time69% |