$143+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BOI
Jul 28 — Aug 41
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 28, 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 28, 2026.
This American Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:10 am
BOS
- BOI
1 stop9h 19m
American Airlines
Sat 8/222:58 pm
BOI
- BOS
1 stop7h 00m
American Airlines
Deal found 6/25![American Airlines logo]()
$285
This Southwest deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:20 am
BOS
- BOI
1 stop14h 15m
Southwest
Tue 10/133:35 pm
BOI
- BOS
1 stop13h 15m
Southwest
Deal found 6/25![Southwest logo]()
$296
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/143:40 pm
BOS
- BOI
1 stop10h 11m
Delta
Tue 7/211:05 pm
BOI
- BOS
1 stop8h 42m
Delta
Deal found 6/23![Delta logo]()
$299
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:15 am
BOS
- BOI
1 stop7h 29m
Delta
Mon 9/2111:10 pm
BOI
- BOS
1 stop8h 32m
Delta
Deal found 6/24![Delta logo]()
$306
This Southwest deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:15 am
BOS
- BOI
1 stop11h 25m
Southwest
Thu 8/272:55 pm
BOI
- BOS
1 stop7h 35m
Southwest
Deal found 6/26![Southwest logo]()
$308
This American Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:00 am
BOS
- BOI
1 stop9h 20m
American Airlines
Tue 7/145:36 pm
BOI
- BOS
1 stop10h 09m
American Airlines
Deal found 6/23![American Airlines logo]()
$312
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:05 am
BOS
- BOI
1 stop8h 11m
Delta
Mon 9/2111:10 pm
BOI
- BOS
1 stop9h 58m
Delta
Deal found 6/25![Delta logo]()
$313
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:20 pm
BOS
- BOI
2 stops9h 50m
Southwest
Fri 8/282:55 pm
BOI
- BOS
1 stop7h 35m
Southwest
Deal found 6/24![Southwest logo]()
$317
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:25 pm
BOS
- BOI
2 stops9h 10m
Southwest
Mon 8/2412:10 pm
BOI
- BOS
1 stop7h 40m
Southwest
Deal found 6/23![Southwest logo]()
$318
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/273:25 pm
BOS
- BOI
2 stops9h 10m
Southwest
Mon 8/3111:30 am
BOI
- BOS
2 stops8h 40m
Southwest
Deal found 6/24![Southwest logo]()
$323
This American Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:10 am
BOS
- GEG
1 stop9h 27m
American Airlines
Sat 9/126:30 am
GEG
- BOS
1 stop11h 26m
American Airlines
Deal found 6/27![American Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:05 am
BOS
- WYS
1 stop8h 22m
Delta
Fri 9/111:09 pm
WYS
- BOS
1 stop8h 44m
Delta
Deal found 6/26![Delta logo]()
$334
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 28, 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 28, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:08 am
BOS
- BOI
1 stop9h 57m
Alaska Airlines
Wed 12/96:00 am
BOI
- BOS
1 stop7h 27m
Alaska Airlines
Deal found 6/23![Alaska Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:51 am
BOS
- BOI
1 stop9h 51m
Delta
Thu 8/277:28 pm
BOI
- BOS
1 stop10h 07m
Delta
Deal found 6/27![Delta logo]()
$313
This Southwest deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:50 am
BOS
- BOI
2 stops10h 20m
Southwest
Thu 8/272:55 pm
BOI
- BOS
1 stop7h 35m
Southwest
Deal found 6/26![Southwest logo]()
$314
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:45 am
BOS
- WYS
2 stops9h 35m
United Airlines
Tue 8/251:55 pm
WYS
- BOS
2 stops9h 16m
United Airlines
Deal found 6/26![United Airlines logo]()
$459
This Alaska Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:48 pm
BOS
- BOI
1 stop8h 56m
Alaska Airlines
Tue 9/157:48 pm
BOI
- BOS
1 stop9h 51m
Alaska Airlines
Deal found 6/27![Alaska Airlines logo]()
$326
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:15 am
BOS
- BOI
1 stop7h 29m
Delta
Tue 9/1512:14 pm
BOI
- BOS
1 stop10h 20m
Delta
Deal found 6/23![Delta logo]()
$327
This Southwest deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/42:45 pm
BOS
- BOI
2 stops10h 35m
Southwest
Tue 8/182:25 pm
BOI
- BOS
1 stop7h 40m
Southwest
Deal found 6/26![Southwest logo]()
$349
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:51 am
BOS
- GEG
1 stop10h 06m
Delta
Mon 8/2410:56 pm
GEG
- BOS
1 stop7h 43m
Delta
Deal found 6/27![Delta logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:12 am
BOS
- BOI
1 stop10h 18m
Alaska Airlines
Sun 9/274:20 pm
BOI
- BOS
1 stop13h 19m
Alaska Airlines
Deal found 6/27![Alaska Airlines logo]()
$348
This Southwest deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/41:10 pm
BOS
- BOI
2 stops11h 15m
Southwest
Sun 11/85:35 am
BOI
- BOS
2 stops9h 35m
Southwest
Deal found 6/27![Southwest logo]()
$363
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 7/286:05 am
BOS
- GEG
1 stop9h 07m
Delta
Mon 8/31:00 pm
GEG
- BOS
1 stop8h 17m
Delta
Deal found 6/28![Delta logo]()
$337
This Southwest deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:40 am
BOS
- GEG
2 stops11h 50m
Southwest
Sun 9/2012:05 pm
GEG
- BOS
1 stop9h 20m
Southwest
Deal found 6/26![Southwest logo]()
$366
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:51 am
BOS
- GEG
1 stop10h 06m
Delta
Mon 8/2410:56 pm
GEG
- BOS
1 stop7h 43m
Delta
Deal found 6/23![Delta logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:12 am
BOS
- GEG
1 stop8h 27m
Alaska Airlines
Wed 9/307:24 pm
GEG
- BOS
1 stop7h 45m
Alaska Airlines
Deal found 6/23![Alaska Airlines logo]()
$393
This United Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/149:20 am
BOS
- IDA
1 stop8h 03m
United Airlines
Tue 11/1710:35 am
IDA
- BOS
2 stops10h 47m
United Airlines
Deal found 6/25![United Airlines logo]()
$484
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:25 pm
BOS
- BOI
2 stops9h 10m
Southwest
Mon 8/248:05 am
BOI
- BOS
2 stops11h 45m
Southwest
Deal found 6/23![Southwest logo]()
$374
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:05 am
BOS
- GEG
1 stop9h 09m
Delta
Sun 9/275:49 pm
GEG
- BOS
1 stop10h 51m
Delta
Deal found 6/27![Delta logo]()
$348
This Alaska Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/38:00 am
BOS
- GEG
1 stop17h 49m
Alaska Airlines
Mon 9/77:03 am
GEG
- BOS
1 stop19h 46m
Alaska Airlines
Deal found 6/26![Alaska Airlines logo]()
$401
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:45 am
BOS
- JAC
1 stop9h 43m
United Airlines
Fri 9/118:00 am
JAC
- BOS
1 stop11h 29m
United Airlines
Deal found 6/26![United Airlines logo]()
$493
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:55 am
BOS
- BOI
1 stop7h 02m
Delta
Tue 7/141:05 pm
BOI
- BOS
1 stop8h 42m
Delta
Deal found 6/25![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/172:15 pm
BOS
- GEG
2 stops11h 25m
Southwest
Mon 8/2412:20 pm
GEG
- BOS
1 stop9h 05m
Southwest
Deal found 6/27![Southwest logo]()
$400
This United Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:27 pm
BOS
- JAC
2 stops10h 13m
United Airlines
Wed 9/29:28 am
JAC
- BOS
2 stops12h 31m
United Airlines
Deal found 6/25![United Airlines logo]()
$503
This Alaska Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:10 am
BOS
- IDA
1 stop10h 07m
Alaska Airlines
Tue 11/176:04 am
IDA
- BOS
1 stop9h 18m
Alaska Airlines
Deal found 6/27![Alaska Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:55 am
BOS
- BOI
1 stop7h 02m
Delta
Mon 7/1311:10 pm
BOI
- BOS
1 stop8h 29m
Delta
Deal found 6/25![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:25 pm
BOS
- GEG
2 stops9h 35m
Southwest
Mon 8/246:30 am
GEG
- BOS
2 stops12h 20m
Southwest
Deal found 6/23![Southwest logo]()
$403
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:45 am
BOS
- WYS
1 stop10h 21m
United Airlines
Wed 9/91:55 pm
WYS
- BOS
2 stops9h 15m
United Airlines
Deal found 6/26![United Airlines logo]()
$505
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:38 am
BOS
- JAC
2 stops12h 02m
United Airlines
Sat 9/128:05 am
JAC
- BOS
2 stops14h 49m
United Airlines
Deal found 6/26![United Airlines logo]()
$523
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:10 am
BOS
- GEG
1 stop9h 11m
Delta
Mon 7/1310:48 pm
GEG
- BOS
1 stop7h 51m
Delta
Deal found 6/23![Delta logo]()
$393
This Alaska Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/144:30 pm
BOS
- SUN
2 stops20h 21m
Alaska Airlines
Wed 11/1811:33 am
SUN
- BOS
1 stop10h 26m
Alaska Airlines
Deal found 6/25![Alaska Airlines logo]()
$501
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/222:35 pm
BOS
- IDA
2 stops9h 57m
Delta
Sat 8/297:00 pm
IDA
- BOS
1 stop9h 30m
Delta
Deal found 6/25![Delta logo]()
$399
Last-minute flights from Boston to IdahoDiscover last-minute flight deals from Boston to Idaho. Data last updated June 28, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Idaho. Data last updated June 28, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/32:27 pm
BOS
- BOI
1 stop10h 54m
American Airlines
Fri 7/1012:15 pm
BOI
- BOS
1 stop9h 44m
American Airlines
Deal found 6/24![American Airlines logo]()
$339
This American Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:00 am
BOS
- BOI
1 stop9h 20m
American Airlines
Tue 7/145:36 pm
BOI
- BOS
1 stop10h 09m
American Airlines
Deal found 6/25![American Airlines logo]()
$351
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/75:55 pm
BOS
- BOI
1 stop7h 51m
Delta
Sun 7/1211:10 pm
BOI
- BOS
1 stop8h 29m
Delta
Deal found 6/23![Delta logo]()
$357
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:16 am
BOS
- GEG
1 stop8h 05m
Delta
Tue 7/2111:30 am
GEG
- BOS
1 stop9h 44m
Delta
Deal found 6/25![Delta logo]()
$356
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:55 am
BOS
- BOI
1 stop7h 02m
Delta
Sun 7/197:28 pm
BOI
- BOS
1 stop10h 07m
Delta
Deal found 6/25![Delta logo]()
$356
This American Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:00 am
BOS
- BOI
1 stop9h 20m
American Airlines
Tue 7/145:36 pm
BOI
- BOS
1 stop10h 09m
American Airlines
Deal found 6/23![American Airlines logo]()
$312
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/95:55 pm
BOS
- BOI
1 stop7h 51m
Delta
Mon 7/207:28 pm
BOI
- BOS
1 stop10h 07m
Delta
Deal found 6/25![Delta logo]()
$335
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/127:53 am
BOS
- BOI
1 stop11h 31m
Delta
Wed 7/158:42 am
BOI
- BOS
1 stop9h 01m
Delta
Deal found 6/23![Delta logo]()
$329
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/143:40 pm
BOS
- BOI
1 stop10h 11m
Delta
Tue 7/211:05 pm
BOI
- BOS
1 stop8h 42m
Delta
Deal found 6/23![Delta logo]()
$299
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/165:55 am
BOS
- BOI
1 stop7h 02m
Delta
Mon 7/207:28 pm
BOI
- BOS
1 stop10h 07m
Delta
Deal found 6/26![Delta logo]()
$346
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 7/217:53 am
BOS
- GEG
1 stop10h 54m
Delta
Tue 7/287:59 pm
GEG
- BOS
1 stop8h 36m
Delta
Deal found 6/28![Delta logo]()
$337
This Delta deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/273:40 pm
BOS
- BOI
1 stop10h 11m
Delta
Fri 7/317:28 pm
BOI
- BOS
1 stop10h 07m
Delta
Deal found 6/26![Delta logo]()
$334
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 28, 2026.
Search for one-way flight options from Boston to Idaho. Find affordable one-way fares based on user searches. Data last updated June 28, 2026.
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:52 am
BOS
- BOI
1 stop7h 40m
American Airlines
Deal found 6/24![American Airlines logo]()
$143
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:10 pm
BOS
- BOI
2 stops11h 20m
Southwest
Deal found 6/24![Southwest logo]()
$148
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:45 pm
BOS
- BOI
1 stop7h 14m
Delta
Deal found 6/24![Delta logo]()
$152
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:10 pm
BOS
- BOI
2 stops11h 00m
Southwest
Deal found 6/24![Southwest logo]()
$156
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:05 pm
BOS
- BOI
1 stop9h 48m
Delta
Deal found 6/24![Delta logo]()
$157
This Southwest deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/112:45 pm
BOS
- BOI
2 stops10h 35m
Southwest
Deal found 6/26![Southwest logo]()
$159
This American Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:30 am
BOS
- GEG
1 stop10h 39m
American Airlines
Deal found 6/27![American Airlines logo]()
$164
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:15 am
BOS
- GEG
1 stop6h 55m
Delta
Deal found 6/23![Delta logo]()
$169
This United Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:28 am
BOS
- BOI
1 stop11h 16m
United Airlines
Deal found 6/25![United Airlines logo]()
$170
This Southwest deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/143:25 pm
BOS
- BOI
2 stops9h 10m
Southwest
Deal found 6/26![Southwest logo]()
$175
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:45 am
BOS
- BOI
1 stop9h 46m
United Airlines
Deal found 6/27![United Airlines logo]()
$176
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/217:28 am
BOS
- BOI
1 stop11h 16m
United Airlines
Deal found 6/27![United Airlines 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 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $285 (American Airlines) |
One-way from | $143 (American Airlines) |
Popular in | December |
Cheapest in | May |
Average price | $564 |
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 28, 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
Tue 12/8
7:08 am-3:05 pm
1 stop9h 57m
Boise Air Term. Gowen Fld
Wed 12/9
6:00 am-3:27 pm
1 stop7h 27m
$299
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Thu 8/20
5:51 am-1:42 pm
1 stop9h 51m
Boise Air Term. Gowen Fld
Thu 8/27
7:28 pm-7:35 am
1 stop10h 07m
$313
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Thu 8/20
5:50 am-2:10 pm
2 stops10h 20m
Boise Air Term. Gowen Fld
Thu 8/27
2:55 pm-12:30 am
1 stop7h 35m
$314
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Fri 9/11
4:48 pm-11:44 pm
1 stop8h 56m
Boise Air Term. Gowen Fld
Tue 9/15
7:48 pm-7:39 am
1 stop9h 51m
$326
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Fri 9/11
8:15 am-1:44 pm
1 stop7h 29m
Boise Air Term. Gowen Fld
Tue 9/15
12:14 pm-12:34 am
1 stop10h 20m
$327
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Mon 8/17
5:51 am-12:57 pm
1 stop10h 06m
Spokane
Mon 8/24
10:56 pm-9:39 am
1 stop7h 43m
$337
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Tue 7/28
6:05 am-12:12 pm
1 stop9h 07m
Spokane
Mon 8/3
1:00 pm-12:17 am
1 stop8h 17m
$337
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Thu 8/20
5:51 am-12:57 pm
1 stop10h 06m
Spokane
Mon 8/24
10:56 pm-9:39 am
1 stop7h 43m
$337
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Sun 9/20
7:12 am-3:30 pm
1 stop10h 18m
Boise Air Term. Gowen Fld
Sun 9/27
4:20 pm-7:39 am
1 stop13h 19m
$348
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Thu 9/24
6:05 am-12:14 pm
1 stop9h 09m
Spokane
Sun 9/27
5:49 pm-7:40 am
1 stop10h 51m
$348
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-WYS
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-WYS
BOS-IDA
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 28, 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.
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Food
7.0
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 28, 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 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$272 | Average$530 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$281 | Average$514 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$284 | Average$588 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$296 | Average$472 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$369 | Average$575 | FlexibilityNo cancel fee | On-time69% |