$157+ Cheap flights from Boston (BOS) to Idaho
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BOI
Apr 22 — Apr 291
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Idaho with Cheapflights
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Cheapest flights from Boston to IdahoExplore the most affordable flight options available from Boston to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.
Explore the most affordable flight options available from Boston to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.
This United Airlines deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:50 pm
BOS
- BOI
1 stop7h 45m
United Airlines
Wed 4/156:15 am
BOI
- BOS
1 stop8h 58m
United Airlines
Deal found 3/21![United Airlines logo]()
$308
This American Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:18 pm
BOS
- BOI
1 stop9h 20m
American Airlines
Tue 4/211:29 pm
BOI
- BOS
1 stop8h 56m
American Airlines
Deal found 3/18![American Airlines logo]()
$313
This Alaska Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:42 pm
BOS
- GEG
1 stop8h 13m
Alaska Airlines
Wed 5/65:00 am
GEG
- BOS
1 stop7h 33m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:25 pm
BOS
- BOI
2 stops9h 45m
Southwest
Wed 4/153:15 pm
BOI
- BOS
1 stop6h 50m
Southwest
Deal found 3/21![Southwest logo]()
$318
This Southwest deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” 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 5/21:50 pm
BOS
- GEG
2 stops10h 25m
Southwest
Sat 5/910:45 am
GEG
- BOS
1 stop10h 05m
Southwest
Deal found 3/22![Southwest logo]()
$322
This Expedia deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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.
Thu 4/97:15 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Tue 4/1411:58 am
BOI
- BOS
1 stop10h 01m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$323
This Delta deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” 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
Mon 6/82:45 pm
BOI
- BOS
1 stop7h 38m
Delta
Deal found 3/19![Delta logo]()
$325
This American Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 5/66:30 am
BOS
- BOI
1 stop8h 19m
American Airlines
Tue 5/126:45 am
BOI
- BOS
2 stops10h 45m
American Airlines
Deal found 3/18![American Airlines logo]()
$326
This American Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” 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 5/23:05 pm
BOS
- GEG
2 stops11h 05m
American Airlines
Sat 5/96:34 am
GEG
- BOS
2 stops11h 27m
American Airlines
Deal found 3/22![American Airlines logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:15 am
BOS
- BOI
1 stop8h 43m
Alaska Airlines
Wed 4/158:26 pm
BOI
- BOS
1 stop7h 27m
Alaska Airlines
Deal found 3/20![Alaska Airlines logo]()
$332
This Expedia deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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.
Thu 4/97:15 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Mon 4/138:20 am
BOI
- BOS
1 stop13h 39m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$333
This Southwest deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:20 am
BOS
- BOI
2 stops11h 05m
Southwest
Tue 4/213:15 pm
BOI
- BOS
1 stop6h 50m
Southwest
Deal found 3/18![Southwest logo]()
$337
Best flights from Boston to IdahoDiscover carefully curated flight deals from Boston to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 23, 2026.
Discover carefully curated flight deals from Boston to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 23, 2026.
This Alaska Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:05 pm
BOS
- BOI
1 stop8h 54m
Alaska Airlines
Tue 5/57:20 pm
BOI
- BOS
1 stop9h 52m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:35 am
BOS
- BOI
1 stop9h 03m
Delta
Sun 4/1211:40 pm
BOI
- BOS
1 stop8h 09m
Delta
Deal found 3/18![Delta logo]()
$394
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1410:05 am
BOS
- BOI
2 stops14h 30m
United Airlines
Wed 4/156:58 pm
BOI
- BOS
1 stop9h 23m
United Airlines
Deal found 3/18![United Airlines logo]()
$428
This American Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 5/2811:22 am
BOS
- IDA
2 stops12h 53m
American Airlines
Tue 6/212:44 pm
IDA
- BOS
1 stop9h 31m
American Airlines
Deal found 3/18![American Airlines logo]()
$430
This Southwest deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” 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 6/84:30 pm
BOS
- BOI
1 stop9h 25m
Southwest
Wed 6/174:05 pm
BOI
- BOS
1 stop6h 40m
Southwest
Deal found 3/21![Southwest logo]()
$441
This Alaska Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:15 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Wed 4/1511:58 am
BOI
- BOS
1 stop10h 01m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” 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 4/246:15 am
BOS
- JAC
1 stop7h 49m
Delta
Tue 4/281:00 pm
JAC
- BOS
1 stop8h 57m
Delta
Deal found 3/22![Delta logo]()
$419
This Alaska Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:15 am
BOS
- SUN
1 stop30h 03m
Alaska Airlines
Sat 4/1812:00 pm
SUN
- BOS
1 stop9h 59m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$391
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 7/286:00 am
BOS
- BOI
1 stop7h 32m
United Airlines
Mon 8/37:05 pm
BOI
- BOS
1 stop10h 56m
United Airlines
Deal found 3/18![United Airlines logo]()
$441
This Southwest deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/304:45 pm
BOS
- BOI
2 stops9h 40m
Southwest
Tue 7/74:05 pm
BOI
- BOS
1 stop6h 40m
Southwest
Deal found 3/19![Southwest logo]()
$446
This Delta deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:15 am
BOS
- JAC
1 stop7h 55m
Delta
Wed 4/81:10 pm
JAC
- BOS
1 stop8h 49m
Delta
Deal found 3/19![Delta logo]()
$419
This Southwest deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” 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 8/245:40 am
BOS
- GEG
1 stop7h 35m
Southwest
Mon 8/316:00 am
GEG
- BOS
1 stop8h 20m
Southwest
Deal found 3/21![Southwest logo]()
$447
This American Airlines deal was found by Cheapflights users on 3/23. 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.
Fri 5/298:15 am
BOS
- JAC
1 stop9h 42m
American Airlines
Tue 6/211:07 am
JAC
- BOS
2 stops9h 21m
American Airlines
Deal found 3/23![American Airlines logo]()
$495
This Delta deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:00 am
BOS
- IDA
1 stop10h 27m
Delta
Sat 9/56:50 pm
IDA
- BOS
1 stop9h 19m
Delta
Deal found 3/19![Delta logo]()
$428
This United Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” 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 9/1112:30 pm
BOS
- SUN
1 stop8h 20m
United Airlines
Mon 9/1412:30 pm
SUN
- BOS
1 stop10h 25m
United Airlines
Deal found 3/20![United Airlines logo]()
$480
This Alaska Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 8/273:28 pm
BOS
- GEG
1 stop8h 43m
Alaska Airlines
Wed 9/212:36 pm
GEG
- BOS
1 stop14h 26m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$437
This Southwest deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 7/284:45 pm
BOS
- BOI
2 stops9h 40m
Southwest
Mon 8/37:40 pm
BOI
- BOS
2 stops10h 20m
Southwest
Deal found 3/18![Southwest logo]()
$451
This Delta deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:15 am
BOS
- IDA
1 stop8h 11m
Delta
Sun 5/36:58 pm
IDA
- BOS
1 stop9h 02m
Delta
Deal found 3/21![Delta logo]()
$428
This United Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/47:09 am
BOS
- IDA
1 stop8h 15m
United Airlines
Wed 4/82:30 pm
IDA
- BOS
1 stop7h 29m
United Airlines
Deal found 3/20![United Airlines logo]()
$482
This Delta deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:35 am
BOS
- JAC
2 stops12h 38m
Delta
Tue 5/1211:35 am
JAC
- BOS
2 stops11h 48m
Delta
Deal found 3/19![Delta logo]()
$429
This Southwest deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” 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 4/35:05 pm
BOS
- GEG
1 stop8h 05m
Southwest
Sat 4/1110:45 am
GEG
- BOS
1 stop10h 05m
Southwest
Deal found 3/19![Southwest logo]()
$477
This Alaska Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:00 am
BOS
- IDA
1 stop9h 17m
Alaska Airlines
Tue 6/26:00 am
IDA
- BOS
1 stop8h 32m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:00 am
BOS
- GEG
2 stops12h 18m
United Airlines
Wed 5/67:10 am
GEG
- BOS
2 stops13h 49m
United Airlines
Deal found 3/22![United Airlines logo]()
$502
This Delta deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” 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 5/16:54 pm
BOS
- BOI
1 stop7h 03m
Delta
Wed 5/136:41 pm
BOI
- BOS
1 stop9h 39m
Delta
Deal found 3/22![Delta logo]()
$445
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 6/99:30 am
BOS
- SUN
2 stops14h 21m
United Airlines
Fri 6/127:00 am
SUN
- BOS
2 stops12h 53m
United Airlines
Deal found 3/18![United Airlines logo]()
$521
This Delta deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:10 am
BOS
- GEG
1 stop8h 57m
Delta
Mon 8/105:00 pm
GEG
- BOS
1 stop10h 09m
Delta
Deal found 3/20![Delta logo]()
$447
This Southwest deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” 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
Sun 8/167:05 am
GEG
- BOS
2 stops11h 55m
Southwest
Deal found 3/20![Southwest logo]()
$542
This Alaska Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” 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 5/286:00 am
BOS
- GEG
2 stops18h 18m
Alaska Airlines
Sun 5/317:25 pm
GEG
- BOS
1 stop7h 55m
Alaska Airlines
Deal found 3/20![Alaska Airlines logo]()
$550
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:05 am
BOS
- GEG
2 stops14h 06m
United Airlines
Fri 4/241:46 pm
GEG
- BOS
1 stop7h 13m
United Airlines
Deal found 3/18![United Airlines logo]()
$532
This Delta deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” 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 8/167:10 am
BOS
- BOI
1 stop8h 53m
Delta
Wed 8/1912:42 pm
BOI
- BOS
1 stop9h 41m
Delta
Deal found 3/19![Delta logo]()
$447
Last-minute flights from Boston to IdahoDiscover last-minute flight deals from Boston to Idaho. Data last updated March 23, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Idaho. Data last updated March 23, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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.
Thu 4/97:15 am
BOS
- BOI
1 stop10h 14m
Alaska Airlines
Tue 4/1411:58 am
BOI
- BOS
1 stop10h 01m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$323
This United Airlines deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:50 pm
BOS
- BOI
1 stop7h 45m
United Airlines
Wed 4/156:15 am
BOI
- BOS
1 stop8h 58m
United Airlines
Deal found 3/21![United Airlines logo]()
$308
This American Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:18 pm
BOS
- BOI
1 stop9h 20m
American Airlines
Tue 4/211:29 pm
BOI
- BOS
1 stop8h 56m
American Airlines
Deal found 3/18![American Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/145:50 am
BOS
- GEG
1 stop10h 14m
Delta
Sat 4/185:10 pm
GEG
- BOS
1 stop9h 50m
Delta
Deal found 3/18![Delta logo]()
$317
This Southwest deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:25 pm
BOS
- BOI
2 stops9h 45m
Southwest
Wed 4/153:15 pm
BOI
- BOS
1 stop6h 50m
Southwest
Deal found 3/21![Southwest logo]()
$318
This Alaska Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:15 am
BOS
- BOI
1 stop8h 43m
Alaska Airlines
Wed 4/158:26 pm
BOI
- BOS
1 stop7h 27m
Alaska Airlines
Deal found 3/20![Alaska Airlines logo]()
$332
This Southwest deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:20 am
BOS
- BOI
2 stops11h 05m
Southwest
Tue 4/213:15 pm
BOI
- BOS
1 stop6h 50m
Southwest
Deal found 3/18![Southwest logo]()
$337
This Southwest deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:20 am
BOS
- BOI
2 stops11h 05m
Southwest
Mon 4/204:20 pm
BOI
- BOS
1 stop6h 30m
Southwest
Deal found 3/18![Southwest logo]()
$371
This Delta deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:05 am
BOS
- GEG
1 stop7h 59m
Delta
Tue 4/215:10 pm
GEG
- BOS
1 stop9h 50m
Delta
Deal found 3/19![Delta logo]()
$347
This American Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:30 am
BOS
- GEG
1 stop9h 02m
American Airlines
Sat 4/181:22 pm
GEG
- BOS
1 stop8h 03m
American Airlines
Deal found 3/19![American Airlines logo]()
$367
This American Airlines deal was found by Cheapflights users on 3/23. 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.
Sat 4/256:00 am
BOS
- BOI
1 stop9h 03m
American Airlines
Sat 5/21:53 pm
BOI
- BOS
1 stop8h 11m
American Airlines
Deal found 3/23![American Airlines logo]()
$368
This Expedia deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” 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.
Tue 4/289:00 am
BOS
- IDA
1 stop15h 40m
Alaska Airlines
Sat 5/26:00 am
IDA
- BOS
1 stop9h 42m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$369
One-way flights from Boston to IdahoSearch for one-way flight options from Boston to Idaho. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
Search for one-way flight options from Boston to Idaho. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
This Delta deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” 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 5/96:16 pm
BOS
- BOI
1 stop7h 30m
Delta
Deal found 3/22![Delta logo]()
$157
This United Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/254:28 pm
BOS
- GEG
1 stop8h 43m
United Airlines
Deal found 3/22![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” 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 6/26:00 am
BOS
- BOI
1 stop9h 08m
United Airlines
Deal found 3/20![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2511:00 am
BOS
- BOI
2 stops12h 34m
United Airlines
Deal found 3/22![United Airlines logo]()
$162
This American Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:00 am
BOS
- BOI
1 stop9h 03m
American Airlines
Deal found 3/19![American Airlines logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:00 am
BOS
- BOI
1 stop10h 33m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$176
This Delta deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:50 am
BOS
- GEG
1 stop10h 14m
Delta
Deal found 3/19![Delta logo]()
$179
This American Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” 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 5/162:02 pm
BOS
- GEG
1 stop9h 31m
American Airlines
Deal found 3/19![American Airlines logo]()
$183
This Travelocity deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:00 am
BOS
- GEG
1 stop8h 40m
Alaska Airlines
Deal found 3/20![Alaska Airlines logo]()
$189
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 5/273:10 pm
BOS
- GEG
1 stop8h 55m
United Airlines
Deal found 3/18![United Airlines logo]()
$196
This American Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:30 am
BOS
- GEG
1 stop9h 02m
American Airlines
Deal found 3/19![American Airlines logo]()
$198
This American Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” 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
Deal found 3/20![American Airlines logo]()
$201
Find flight deals from Boston to Idaho
Keep the following information in mind while searching for Boston to Idaho flight deals. Data was last updated March 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $308 (United Airlines) |
One-way from | $157 (Delta) |
Popular in | December |
Cheapest in | January |
Average price | $539 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 23, 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
Sat 5/2
5:05 pm-11:59 pm
1 stop8h 54m
Boise Air Term. Gowen Fld
Tue 5/5
7:20 pm-7:12 am
1 stop9h 52m
$313
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Tue 4/14
7:15 am-3:29 pm
1 stop10h 14m
Boise Air Term. Gowen Fld
Wed 4/15
11:58 am-11:59 pm
1 stop10h 01m
$332
BostonHailey
BOS - SUN
BOSSUN
Boston Logan Intl
Tue 4/14
7:15 am-11:18 am
1 stop30h 03m
Hailey Sun Valley-Friedman
Sat 4/18
12:00 pm-11:59 pm
1 stop9h 59m
$391
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Wed 4/8
5:35 am-12:38 pm
1 stop9h 03m
Boise Air Term. Gowen Fld
Sun 4/12
11:40 pm-9:49 am
1 stop8h 09m
$394
BostonJackson
BOS - JAC
BOSJAC
Boston Logan Intl
Fri 4/24
6:15 am-12:04 pm
1 stop7h 49m
Jackson Hole
Tue 4/28
1:00 pm-11:57 pm
1 stop8h 57m
$419
BostonJackson
BOS - JAC
BOSJAC
Boston Logan Intl
Thu 4/2
6:15 am-12:10 pm
1 stop7h 55m
Jackson Hole
Wed 4/8
1:10 pm-11:59 pm
1 stop8h 49m
$419
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Tue 4/14
10:05 am-10:35 pm
2 stops14h 30m
Boise Air Term. Gowen Fld
Wed 4/15
6:58 pm-6:21 am
1 stop9h 23m
$428
BostonIdaho Falls
BOS - IDA
BOSIDA
Boston Logan Intl
Sat 8/29
6:00 am-2:27 pm
1 stop10h 27m
Idaho Falls Fanning Field
Sat 9/5
6:50 pm-6:09 am
1 stop9h 19m
$428
BostonIdaho Falls
BOS - IDA
BOSIDA
Boston Logan Intl
Thu 4/23
6:15 am-12:26 pm
1 stop8h 11m
Idaho Falls Fanning Field
Sun 5/3
6:58 pm-6:00 am
1 stop9h 02m
$428
BostonJackson
BOS - JAC
BOSJAC
Boston Logan Intl
Tue 5/5
5:35 am-4:13 pm
2 stops12h 38m
Jackson Hole
Tue 5/12
11:35 am-1:23 am
2 stops11h 48m
$429
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-JAC
BOS-SUN
BOS-GEG
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-JAC
BOS-SUN
What is the cheapest month to book a flight from Boston to Idaho?
Currently, April is the cheapest month in which you can book a flight from Boston to Idaho (average of $204). Flying from Boston to Idaho in March is currently the most expensive (average of $354). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Idaho
Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated March 23, 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
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Boston to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Boston to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Boston to Idaho by cabin class
Find flights from Boston to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Idaho flights
Browse other Boston and Idaho flight options. Last updated on March 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Boston to Idaho flights
Consider these flights traveling from Boston to Idaho.
Top 5 airlines flying from Boston to Idaho
Discover the top 5 airlines that operate flights from Boston to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$236 | Average$607 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$264 | Average$483 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$282 | Average$578 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$296 | Average$589 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$370 | Average$466 | FlexibilityNo cancel fee | On-time63% |