$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 6/16. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BOI
May 17 — May 241
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Boston to Idaho with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Boston to Idaho
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to IdahoExplore the most affordable flight options available from Boston to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
Explore the most affordable flight options available from Boston to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
This Trip.com deal was found by Cheapflights users on 4/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
BOS
- GEG
1 stop8h 52m
Alaska Airlines
Wed 6/312:46 pm
GEG
- BOS
1 stop8h 13m
Alaska Airlines
Deal found 4/12![Alaska Airlines logo]()
$279
This United Airlines deal was found by Cheapflights users on 4/13. 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.
Wed 5/276:00 am
BOS
- BOI
1 stop7h 32m
United Airlines
Mon 6/17:05 pm
BOI
- BOS
1 stop9h 16m
United Airlines
Deal found 4/13![United Airlines logo]()
$285
This American Airlines deal was found by Cheapflights users on 4/12. 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.
Wed 5/276:00 am
BOS
- BOI
2 stops10h 20m
American Airlines
Wed 6/33:11 pm
BOI
- BOS
1 stop7h 04m
American Airlines
Deal found 4/12![American Airlines logo]()
$290
This Delta deal was found by Cheapflights users on 4/12. 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 8/295:40 am
BOS
- GEG
1 stop10h 27m
Delta
Sat 9/55:00 pm
GEG
- BOS
1 stop10h 09m
Delta
Deal found 4/12![Delta logo]()
$293
This American Airlines deal was found by Cheapflights users on 4/15. 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.
Wed 6/36:00 am
BOS
- BOI
2 stops10h 20m
American Airlines
Wed 6/103:11 pm
BOI
- BOS
1 stop7h 03m
American Airlines
Deal found 4/15![American Airlines logo]()
$299
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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.
Mon 6/18:05 am
BOS
- GEG
1 stop16h 40m
Alaska Airlines
Tue 6/98:38 pm
GEG
- BOS
1 stop8h 02m
Alaska Airlines
Deal found 4/13![Alaska Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 4/14. 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 5/305:15 am
BOS
- BOI
1 stop7h 10m
Southwest
Sat 6/66:40 am
BOI
- BOS
1 stop14h 20m
Southwest
Deal found 4/14![Southwest logo]()
$303
This American Airlines deal was found by Cheapflights users on 4/16. 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.
Tue 6/26:00 am
BOS
- BOI
2 stops10h 20m
American Airlines
Tue 6/93:11 pm
BOI
- BOS
1 stop7h 03m
American Airlines
Deal found 4/16![American Airlines logo]()
$304
This American Airlines deal was found by Cheapflights users on 4/14. 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 5/276:00 am
BOS
- BOI
2 stops10h 20m
American Airlines
Sat 5/303:11 pm
BOI
- BOS
1 stop7h 04m
American Airlines
Deal found 4/14![American Airlines logo]()
$305
This American Airlines deal was found by Cheapflights users on 4/12. 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 6/167:00 am
BOS
- GEG
1 stop9h 14m
American Airlines
Tue 6/235:44 am
GEG
- BOS
1 stop10h 36m
American Airlines
Deal found 4/12![American Airlines logo]()
$306
This American Airlines deal was found by Cheapflights users on 4/14. 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.
Tue 6/236:00 am
BOS
- BOI
1 stop11h 07m
American Airlines
Tue 6/303:11 pm
BOI
- BOS
1 stop7h 03m
American Airlines
Deal found 4/14![American Airlines logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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.
Mon 6/18:05 am
BOS
- GEG
1 stop16h 40m
Alaska Airlines
Mon 6/87:01 am
GEG
- BOS
1 stop19h 43m
Alaska Airlines
Deal found 4/13![Alaska Airlines logo]()
$309
Best flights from Boston to IdahoDiscover carefully curated flight deals from Boston to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
Discover carefully curated flight deals from Boston to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
This Delta deal was found by Cheapflights users on 4/12. 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.
Tue 6/23:55 pm
BOS
- BOI
1 stop8h 16m
Delta
Tue 6/96:42 pm
BOI
- BOS
1 stop9h 23m
Delta
Deal found 4/12![Delta logo]()
$285
This United Airlines deal was found by Cheapflights users on 4/14. 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.
Sun 5/246:00 am
BOS
- BOI
1 stop7h 32m
United Airlines
Fri 5/297:05 pm
BOI
- BOS
1 stop9h 16m
United Airlines
Deal found 4/14![United Airlines logo]()
$285
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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.
Mon 6/18:05 am
BOS
- GEG
1 stop16h 40m
Alaska Airlines
Tue 6/98:38 pm
GEG
- BOS
1 stop8h 02m
Alaska Airlines
Deal found 4/13![Alaska Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 4/16. 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 6/35:35 am
BOS
- BOI
1 stop7h 20m
Southwest
Mon 6/84:25 pm
BOI
- BOS
1 stop6h 35m
Southwest
Deal found 4/16![Southwest logo]()
$315
This American Airlines deal was found by Cheapflights users on 4/13. 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.
Sat 9/1211:33 am
BOS
- IDA
2 stops11h 49m
American Airlines
Sat 9/267:00 am
IDA
- BOS
2 stops10h 42m
American Airlines
Deal found 4/13![American Airlines logo]()
$555
This Delta deal was found by Cheapflights users on 4/12. 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 10/73:30 pm
BOS
- BOI
1 stop10h 22m
Delta
Mon 10/122:35 pm
BOI
- BOS
1 stop7h 45m
Delta
Deal found 4/12![Delta logo]()
$285
This Alaska Airlines deal was found by Cheapflights users on 4/12. 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 6/18:05 am
BOS
- GEG
1 stop16h 40m
Alaska Airlines
Mon 6/87:25 pm
GEG
- BOS
1 stop7h 55m
Alaska Airlines
Deal found 4/12![Alaska Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 4/12. 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.
Fri 9/117:05 am
BOS
- BOI
1 stop9h 17m
Delta
Wed 9/162:45 pm
BOI
- BOS
1 stop7h 38m
Delta
Deal found 4/12![Delta logo]()
$315
This Southwest deal was found by Cheapflights users on 4/13. 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.
Sat 5/305:15 am
BOS
- BOI
1 stop7h 10m
Southwest
Sat 6/611:35 am
BOI
- BOS
2 stops9h 40m
Southwest
Deal found 4/13![Southwest logo]()
$359
This Delta deal was found by Cheapflights users on 4/13. 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 6/75:55 am
BOS
- GEG
1 stop8h 45m
Delta
Thu 6/112:23 pm
GEG
- BOS
1 stop6h 34m
Delta
Deal found 4/13![Delta logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:11 pm
BOS
- BOI
1 stop17h 52m
Alaska Airlines
Sun 6/78:26 am
BOI
- BOS
1 stop19h 18m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$364
This Southwest deal was found by Cheapflights users on 4/12. 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 5/272:25 pm
BOS
- BOI
2 stops11h 05m
Southwest
Wed 6/36:40 am
BOI
- BOS
2 stops9h 55m
Southwest
Deal found 4/12![Southwest logo]()
$374
This United Airlines deal was found by Cheapflights users on 4/15. 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 5/213:10 pm
BOS
- SUN
1 stop8h 16m
United Airlines
Sun 5/241:57 pm
SUN
- BOS
2 stops14h 01m
United Airlines
Deal found 4/15![United Airlines logo]()
$467
This Delta deal was found by Cheapflights users on 4/15. 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 5/168:10 am
BOS
- IDA
2 stops12h 04m
Delta
Sat 5/236:54 pm
IDA
- BOS
1 stop9h 26m
Delta
Deal found 4/15![Delta logo]()
$374
This Southwest deal was found by Cheapflights users on 4/15. 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 7/142:25 pm
BOS
- GEG
2 stops10h 50m
Southwest
Thu 7/236:05 pm
GEG
- BOS
2 stops11h 05m
Southwest
Deal found 4/15![Southwest logo]()
$436
This United Airlines deal was found by Cheapflights users on 4/12. 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 4/276:00 am
BOS
- SUN
2 stops9h 35m
United Airlines
Fri 5/12:30 pm
SUN
- BOS
1 stop7h 29m
United Airlines
Deal found 4/12![United Airlines logo]()
$481
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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.
Wed 6/36:00 am
BOS
- GEG
1 stop8h 52m
Alaska Airlines
Sat 6/612:46 pm
GEG
- BOS
2 stops14h 34m
Alaska Airlines
Deal found 4/15![Alaska Airlines logo]()
$438
This Delta deal was found by Cheapflights users on 4/13. 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.
Mon 5/256:10 am
BOS
- BOI
1 stop7h 46m
Delta
Thu 5/286:41 pm
BOI
- BOS
1 stop9h 39m
Delta
Deal found 4/13![Delta logo]()
$392
This Southwest deal was found by Cheapflights users on 4/12. 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 6/102:25 pm
BOS
- GEG
2 stops10h 50m
Southwest
Sat 6/135:50 am
GEG
- BOS
2 stops11h 30m
Southwest
Deal found 4/12![Southwest logo]()
$437
This United Airlines deal was found by Cheapflights users on 4/14. 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 7/218:00 am
BOS
- JAC
2 stops11h 53m
United Airlines
Fri 7/248:00 am
JAC
- BOS
2 stops11h 53m
United Airlines
Deal found 4/14![United Airlines logo]()
$483
This Alaska Airlines deal was found by Cheapflights users on 4/12. 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 6/97:11 pm
BOS
- SUN
1 stop16h 27m
Alaska Airlines
Fri 6/1210:20 am
SUN
- BOS
1 stop11h 39m
Alaska Airlines
Deal found 4/12![Alaska Airlines logo]()
$459
This Delta deal was found by Cheapflights users on 4/16. 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 9/36:00 am
BOS
- BOI
1 stop10h 34m
Delta
Thu 9/101:43 pm
BOI
- BOS
1 stop9h 23m
Delta
Deal found 4/16![Delta logo]()
$392
This United Airlines deal was found by Cheapflights users on 4/15. 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 5/207:09 am
BOS
- SUN
1 stop8h 29m
United Airlines
Sun 5/241:57 pm
SUN
- BOS
2 stops14h 01m
United Airlines
Deal found 4/15![United Airlines logo]()
$484
This Southwest deal was found by Cheapflights users on 4/15. 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 5/73:45 pm
BOS
- GEG
2 stops11h 50m
Southwest
Mon 5/112:50 pm
GEG
- BOS
1 stop7h 00m
Southwest
Deal found 4/15![Southwest logo]()
$444
This Southwest deal was found by Cheapflights users on 4/16. 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.
Mon 7/132:10 pm
BOS
- GEG
2 stops12h 15m
Southwest
Mon 7/275:25 am
GEG
- BOS
2 stops10h 55m
Southwest
Deal found 4/16![Southwest logo]()
$449
This United Airlines deal was found by Cheapflights users on 4/13. 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 5/299:30 am
BOS
- JAC
2 stops10h 24m
United Airlines
Tue 6/21:42 pm
JAC
- BOS
2 stops9h 17m
United Airlines
Deal found 4/13![United Airlines logo]()
$503
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 6/96:00 am
BOS
- IDA
1 stop9h 17m
Alaska Airlines
Mon 6/151:43 pm
IDA
- BOS
1 stop8h 16m
Alaska Airlines
Deal found 4/14![Alaska Airlines logo]()
$509
This Delta deal was found by Cheapflights users on 4/12. 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.
Thu 5/288:50 am
BOS
- JAC
2 stops10h 09m
Delta
Wed 6/311:35 am
JAC
- BOS
2 stops9h 54m
Delta
Deal found 4/12![Delta logo]()
$452
This Southwest deal was found by Cheapflights users on 4/16. 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 6/102:30 pm
BOS
- GEG
2 stops10h 45m
Southwest
Mon 6/155:10 pm
GEG
- BOS
2 stops11h 50m
Southwest
Deal found 4/16![Southwest logo]()
$455
This United Airlines deal was found by Cheapflights users on 4/14. 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.
Sat 8/229:34 am
BOS
- JAC
2 stops10h 18m
United Airlines
Thu 8/278:00 am
JAC
- BOS
2 stops15h 05m
United Airlines
Deal found 4/14![United Airlines logo]()
$503
Last-minute flights from Boston to IdahoDiscover last-minute flight deals from Boston to Idaho. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Idaho. Data last updated April 17, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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.
Mon 5/47:00 am
BOS
- BOI
1 stop10h 33m
Alaska Airlines
Mon 5/186:07 pm
BOI
- BOS
1 stop11h 34m
Alaska Airlines
Deal found 4/13![Alaska Airlines logo]()
$315
This Delta deal was found by Cheapflights users on 4/13. 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.
Mon 5/116:15 am
BOS
- GEG
1 stop12h 18m
Delta
Mon 5/181:11 pm
GEG
- BOS
1 stop8h 29m
Delta
Deal found 4/13![Delta logo]()
$309
This Alaska Airlines deal was found by Cheapflights users on 4/12. 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 5/126:42 pm
BOS
- GEG
1 stop8h 13m
Alaska Airlines
Sat 5/168:38 pm
GEG
- BOS
1 stop8h 03m
Alaska Airlines
Deal found 4/12![Alaska Airlines logo]()
$315
This American Airlines deal was found by Cheapflights users on 4/12. 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.
Sat 5/236:00 am
BOS
- GEG
1 stop9h 01m
American Airlines
Sat 6/132:08 pm
GEG
- BOS
1 stop7h 06m
American Airlines
Deal found 4/12![American Airlines logo]()
$327
This Trip.com deal was found by Cheapflights users on 4/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
BOS
- GEG
1 stop8h 52m
Alaska Airlines
Wed 6/312:46 pm
GEG
- BOS
1 stop8h 13m
Alaska Airlines
Deal found 4/12![Alaska Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 4/13. 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.
Wed 5/275:51 am
BOS
- BOI
1 stop9h 27m
Delta
Tue 6/212:15 pm
BOI
- BOS
1 stop10h 25m
Delta
Deal found 4/13![Delta logo]()
$285
This American Airlines deal was found by Cheapflights users on 4/12. 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.
Wed 5/276:00 am
BOS
- BOI
2 stops10h 20m
American Airlines
Wed 6/33:11 pm
BOI
- BOS
1 stop7h 04m
American Airlines
Deal found 4/12![American Airlines logo]()
$290
This American Airlines deal was found by Cheapflights users on 4/12. 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.
Wed 5/277:00 am
BOS
- BOI
1 stop9h 20m
American Airlines
Sat 5/3012:12 pm
BOI
- BOS
1 stop9h 52m
American Airlines
Deal found 4/12![American Airlines logo]()
$304
This American Airlines deal was found by Cheapflights users on 4/14. 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 5/276:00 am
BOS
- BOI
2 stops10h 20m
American Airlines
Tue 6/23:11 pm
BOI
- BOS
1 stop7h 04m
American Airlines
Deal found 4/14![American Airlines logo]()
$310
This American Airlines deal was found by Cheapflights users on 4/12. 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.
Wed 5/276:00 am
BOS
- GEG
2 stops10h 14m
American Airlines
Wed 6/32:08 pm
GEG
- BOS
1 stop7h 07m
American Airlines
Deal found 4/12![American Airlines logo]()
$328
This Alaska Airlines deal was found by Cheapflights users on 4/12. 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 5/296:00 am
BOS
- GEG
1 stop8h 52m
Alaska Airlines
Sun 5/318:38 pm
GEG
- BOS
1 stop8h 03m
Alaska Airlines
Deal found 4/12![Alaska Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 4/14. 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 5/305:15 am
BOS
- BOI
1 stop7h 10m
Southwest
Sat 6/66:40 am
BOI
- BOS
1 stop14h 20m
Southwest
Deal found 4/14![Southwest logo]()
$303
One-way flights from Boston to IdahoSearch for one-way flight options from Boston to Idaho. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
Search for one-way flight options from Boston to Idaho. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Delta deal was found by Cheapflights users on 4/16. 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 6/165:55 am
BOS
- BOI
1 stop7h 03m
Delta
Deal found 4/16![Delta logo]()
$143
This American Airlines deal was found by Cheapflights users on 4/14. 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 5/277:00 am
BOS
- GEG
1 stop9h 14m
American Airlines
Deal found 4/14![American Airlines logo]()
$147
This Expedia deal was found by Cheapflights users on 4/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:42 pm
BOS
- BOI
1 stop17h 00m
Alaska Airlines
Deal found 4/13![Alaska Airlines logo]()
$148
This American Airlines deal was found by Cheapflights users on 4/15. 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.
Wed 5/66:00 am
BOS
- GEG
2 stops11h 19m
American Airlines
Deal found 4/15![American Airlines logo]()
$152
This Delta deal was found by Cheapflights users on 4/13. 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.
Thu 5/74:30 pm
BOS
- GEG
1 stop9h 48m
Delta
Deal found 4/13![Delta logo]()
$155
This American Airlines deal was found by Cheapflights users on 4/16. 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 5/94:24 pm
BOS
- BOI
1 stop9h 17m
American Airlines
Deal found 4/16![American Airlines logo]()
$160
This American Airlines deal was found by Cheapflights users on 4/13. 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.
Sat 6/68:00 am
BOS
- BOI
1 stop9h 07m
American Airlines
Deal found 4/13![American Airlines logo]()
$173
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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.
Thu 5/146:00 am
BOS
- GEG
1 stop8h 52m
Alaska Airlines
Deal found 4/15![Alaska Airlines logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/69:34 am
BOS
- GEG
3 stops37h 55m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$184
This American Airlines deal was found by Cheapflights users on 4/14. 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.
Tue 9/157:00 am
BOS
- JAC
1 stop11h 51m
American Airlines
Deal found 4/14![American Airlines logo]()
$187
This Southwest deal was found by Cheapflights users on 4/16. 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 5/137:20 am
BOS
- BOI
2 stops10h 05m
Southwest
Deal found 4/16![Southwest logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1610:07 am
BOS
- GEG
2 stops37h 22m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$192
Find flight deals from Boston to Idaho
Keep the following information in mind while searching for Boston to Idaho flight deals. Data was last updated April 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $279 (Trip.com) |
One-way from | $143 (Delta) |
Popular in | December |
Cheapest in | January |
Average price | $477 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 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 6/2
3:55 pm-10:11 pm
1 stop8h 16m
Boise Air Term. Gowen Fld
Tue 6/9
6:42 pm-6:05 am
1 stop9h 23m
$285
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Sun 5/24
6:00 am-11:32 am
1 stop7h 32m
Boise Air Term. Gowen Fld
Fri 5/29
7:05 pm-6:21 am
1 stop9h 16m
$285
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Wed 10/7
3:30 pm-11:52 pm
1 stop10h 22m
Boise Air Term. Gowen Fld
Mon 10/12
2:35 pm-12:20 am
1 stop7h 45m
$285
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Mon 6/1
8:05 am-9:45 pm
1 stop16h 40m
Spokane
Tue 6/9
8:38 pm-7:40 am
1 stop8h 02m
$301
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Mon 6/1
8:05 am-9:45 pm
1 stop16h 40m
Spokane
Mon 6/8
7:25 pm-6:20 am
1 stop7h 55m
$309
Quickest round-trip
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Wed 6/3
5:35 am-10:55 am
1 stop7h 20m
Boise Air Term. Gowen Fld
Mon 6/8
4:25 pm-1:00 am
1 stop6h 35m
$315
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Fri 9/11
7:05 am-2:22 pm
1 stop9h 17m
Boise Air Term. Gowen Fld
Wed 9/16
2:45 pm-12:23 am
1 stop7h 38m
$315
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Sun 6/7
5:55 am-11:40 am
1 stop8h 45m
Spokane
Thu 6/11
2:23 pm-11:57 pm
1 stop6h 34m
$329
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Sat 5/30
5:15 am-10:25 am
1 stop7h 10m
Boise Air Term. Gowen Fld
Sat 6/6
11:35 am-11:15 pm
2 stops9h 40m
$359
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Tue 6/2
7:11 pm-11:03 am
1 stop17h 52m
Boise Air Term. Gowen Fld
Sun 6/7
8:26 am-5:44 am
1 stop19h 18m
$364
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-GEG
BOS-BOI
BOS-JAC
BOS-TWF
BOS-IDA
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-GEG
BOS-BOI
BOS-JAC
BOS-TWF
What is the cheapest month to book a flight from Boston to Idaho?
Currently, June is the cheapest month in which you can book a flight from Boston to Idaho (average of $142). Flying from Boston to Idaho in November is currently the most expensive (average of $293). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Boston to Idaho?
Reviews of airlines servicing Idaho
Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated April 17, 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
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Boston to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Boston to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to Idaho by cabin class
Find flights from Boston to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Idaho flights
Browse other Boston and Idaho flight options. Last updated on April 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Boston to Idaho flights
Consider these flights traveling from Boston to Idaho.
Top 5 airlines flying from Boston to Idaho
Discover the top 5 airlines that operate flights from Boston to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$260 | Average$594 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$260 | Average$563 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$264 | Average$482 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$296 | Average$588 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$311 | Average$470 | FlexibilityNo cancel fee | On-time63% |