$137+ 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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BOI
Apr 27 — May 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 March 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 March 28, 2026.
This Delta deal was found by Cheapflights users on 3/26. 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.
Tue 5/196:10 am
BOS
- BOI
1 stop7h 46m
Delta
Tue 6/26:41 pm
BOI
- BOS
1 stop9h 39m
Delta
Deal found 3/26![Delta logo]()
$273
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:10 am
BOS
- GEG
1 stop8h 01m
Delta
Tue 5/196:45 pm
GEG
- BOS
1 stop8h 35m
Delta
Deal found 3/23![Delta logo]()
$275
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.
Tue 5/128:26 am
BOS
- GEG
1 stop11h 29m
American Airlines
Tue 5/196:34 am
GEG
- BOS
2 stops11h 27m
American Airlines
Deal found 3/23![American Airlines logo]()
$293
This Alaska Airlines deal was found by Cheapflights users on 3/24. 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 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 3/24![Alaska Airlines logo]()
$293
This Delta deal was found by Cheapflights users on 3/26. 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.
Wed 5/276:16 pm
BOS
- BOI
1 stop7h 30m
Delta
Sat 5/306:41 pm
BOI
- BOS
1 stop9h 39m
Delta
Deal found 3/26![Delta logo]()
$301
This Southwest deal was found by Cheapflights users on 3/26. 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.
Mon 4/275:05 pm
BOS
- BOI
1 stop8h 25m
Southwest
Tue 5/56:00 am
BOI
- BOS
2 stops10h 35m
Southwest
Deal found 3/26![Southwest logo]()
$306
This Alaska Airlines deal was found by Cheapflights users on 3/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/24:33 pm
BOS
- GEG
1 stop9h 38m
Alaska Airlines
Wed 5/67:41 pm
GEG
- BOS
1 stop8h 31m
Alaska Airlines
Deal found 3/24![Alaska Airlines logo]()
$311
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Mon 6/17:00 am
BOS
- GEG
1 stop9h 14m
American Airlines
Tue 6/92:08 pm
GEG
- BOS
1 stop7h 07m
American Airlines
Deal found 3/24![American Airlines logo]()
$312
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.
Tue 6/26:00 am
BOS
- GEG
2 stops10h 14m
American Airlines
Wed 6/102:08 pm
GEG
- BOS
1 stop7h 07m
American Airlines
Deal found 3/23![American Airlines logo]()
$313
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Wed 4/296:30 am
BOS
- BOI
1 stop8h 19m
American Airlines
Sat 5/21:29 pm
BOI
- BOS
1 stop8h 56m
American Airlines
Deal found 3/27![American Airlines logo]()
$313
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 4/257:00 am
BOS
- GEG
1 stop9h 23m
Alaska Airlines
Sat 5/25:00 am
GEG
- BOS
1 stop9h 42m
Alaska Airlines
Deal found 3/25![Alaska Airlines logo]()
$317
This United Airlines deal was found by Cheapflights users on 3/26. 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 4/257:05 am
BOS
- GEG
2 stops11h 10m
United Airlines
Sat 5/21:41 pm
GEG
- BOS
1 stop7h 18m
United Airlines
Deal found 3/26![United Airlines logo]()
$322
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 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 March 28, 2026.
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/24:33 pm
BOS
- GEG
1 stop10h 22m
Alaska Airlines
Wed 5/67:41 pm
GEG
- BOS
1 stop8h 31m
Alaska Airlines
Deal found 3/23![Alaska Airlines logo]()
$311
This United Airlines deal was found by Cheapflights users on 3/26. 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 4/257:05 am
BOS
- GEG
2 stops11h 10m
United Airlines
Sat 5/21:41 pm
GEG
- BOS
1 stop7h 18m
United Airlines
Deal found 3/26![United Airlines logo]()
$322
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/511:35 am
BOS
- GEG
1 stop14h 50m
Southwest
Tue 6/92:55 pm
GEG
- BOS
1 stop6h 50m
Southwest
Deal found 3/23![Southwest logo]()
$366
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/165:35 am
BOS
- BOI
1 stop9h 08m
Delta
Tue 5/1912:15 pm
BOI
- BOS
1 stop10h 25m
Delta
Deal found 3/23![Delta logo]()
$366
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 4/104:24 pm
BOS
- IDA
1 stop9h 15m
American Airlines
Sat 4/187:48 am
IDA
- BOS
2 stops13h 19m
American Airlines
Deal found 3/27![American Airlines logo]()
$404
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:00 am
BOS
- IDA
1 stop9h 17m
Alaska Airlines
Sat 6/66:00 am
IDA
- BOS
1 stop8h 32m
Alaska Airlines
Deal found 3/23![Alaska Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 3/25. 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.
Mon 6/16:15 am
BOS
- BOI
1 stop10h 19m
Delta
Sat 6/66:41 pm
BOI
- BOS
1 stop9h 39m
Delta
Deal found 3/25![Delta logo]()
$385
This Southwest deal was found by Cheapflights users on 3/25. 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.
Mon 6/13:45 pm
BOS
- BOI
2 stops11h 00m
Southwest
Sat 6/63:15 pm
BOI
- BOS
1 stop7h 20m
Southwest
Deal found 3/25![Southwest logo]()
$399
This United Airlines deal was found by Cheapflights users on 3/26. 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 5/26:00 am
BOS
- GEG
2 stops12h 18m
United Airlines
Wed 5/61:41 pm
GEG
- BOS
1 stop7h 18m
United Airlines
Deal found 3/26![United Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 3/26. 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.
Sat 5/306:10 am
BOS
- BOI
1 stop8h 01m
Delta
Sat 6/66:41 pm
BOI
- BOS
1 stop9h 39m
Delta
Deal found 3/26![Delta logo]()
$385
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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.
Tue 6/27:11 pm
BOS
- BOI
1 stop17h 52m
Alaska Airlines
Sun 6/79:00 am
BOI
- BOS
1 stop19h 20m
Alaska Airlines
Deal found 3/25![Alaska Airlines logo]()
$400
This Southwest deal was found by Cheapflights users on 3/24. 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 5/282:30 pm
BOS
- GEG
2 stops13h 00m
Southwest
Mon 6/12:50 pm
GEG
- BOS
1 stop7h 00m
Southwest
Deal found 3/24![Southwest logo]()
$410
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 5/210:00 am
BOS
- BOI
2 stops13h 17m
United Airlines
Tue 5/52:26 pm
BOI
- BOS
1 stop7h 33m
United Airlines
Deal found 3/27![United Airlines logo]()
$428
This Delta deal was found by Cheapflights users on 3/25. 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 5/66:15 am
BOS
- IDA
1 stop8h 11m
Delta
Sun 5/106:54 pm
IDA
- BOS
1 stop9h 26m
Delta
Deal found 3/25![Delta logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 3/28. 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 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 3/28![Alaska Airlines logo]()
$421
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:35 am
BOS
- GEG
2 stops11h 10m
Southwest
Wed 6/106:00 am
GEG
- BOS
2 stops9h 00m
Southwest
Deal found 3/23![Southwest logo]()
$427
This Delta deal was found by Cheapflights users on 3/26. 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.
Sat 7/255:55 am
BOS
- BOI
1 stop7h 02m
Delta
Tue 7/285:20 am
BOI
- BOS
1 stop6h 31m
Delta
Deal found 3/26![Delta logo]()
$423
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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.
Mon 6/18:05 am
BOS
- GEG
1 stop16h 40m
Alaska Airlines
Tue 6/91:50 pm
GEG
- BOS
2 stops13h 30m
Alaska Airlines
Deal found 3/25![Alaska Airlines logo]()
$427
This Southwest deal was found by Cheapflights users on 3/24. 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 8/2011:15 am
BOS
- BOI
1 stop11h 25m
Southwest
Sat 8/294:00 pm
BOI
- BOS
2 stops12h 00m
Southwest
Deal found 3/24![Southwest logo]()
$446
This Delta deal was found by Cheapflights users on 3/26. 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.
Fri 4/106:15 am
BOS
- SUN
1 stop7h 39m
Delta
Tue 4/143:34 pm
SUN
- BOS
1 stop6h 23m
Delta
Deal found 3/26![Delta logo]()
$441
This Southwest deal was found by Cheapflights users on 3/26. 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.
Sat 7/256:40 am
BOS
- BOI
1 stop12h 40m
Southwest
Tue 7/287:55 pm
BOI
- BOS
2 stops10h 05m
Southwest
Deal found 3/26![Southwest logo]()
$452
This United Airlines deal was found by Cheapflights users on 3/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:45 am
BOS
- WYS
1 stop7h 35m
United Airlines
Thu 9/102:02 pm
WYS
- BOS
2 stops9h 03m
United Airlines
Deal found 3/28![United Airlines logo]()
$549
This Alaska 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 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 3/23![Alaska Airlines logo]()
$460
This Delta deal was found by Cheapflights users on 3/27. 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 4/236:15 am
BOS
- IDA
1 stop8h 11m
Delta
Sun 5/36:58 pm
IDA
- BOS
1 stop9h 02m
Delta
Deal found 3/27![Delta logo]()
$449
This Southwest deal was found by Cheapflights users on 3/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/224:45 pm
BOS
- BOI
2 stops9h 40m
Southwest
Mon 7/277:10 am
BOI
- BOS
1 stop6h 55m
Southwest
Deal found 3/28![Southwest logo]()
$464
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 4/117:09 am
BOS
- SUN
1 stop8h 26m
United Airlines
Wed 4/152:24 pm
SUN
- BOS
1 stop7h 35m
United Airlines
Deal found 3/27![United Airlines logo]()
$571
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1411:15 am
BOS
- SUN
2 stops12h 27m
Delta
Sat 4/1812:42 pm
SUN
- BOS
2 stops10h 40m
Delta
Deal found 3/23![Delta logo]()
$456
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/29:15 am
BOS
- JAC
1 stop8h 03m
United Airlines
Wed 5/62:30 pm
JAC
- BOS
1 stop7h 29m
United Airlines
Deal found 3/23![United Airlines logo]()
$589
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 6/96:00 am
BOS
- IDA
1 stop9h 17m
Alaska Airlines
Sat 6/134:14 pm
IDA
- BOS
2 stops11h 29m
Alaska Airlines
Deal found 3/27![Alaska Airlines logo]()
$588
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Wed 5/277:30 am
BOS
- JAC
2 stops12h 24m
United Airlines
Mon 6/12:44 pm
JAC
- BOS
2 stops15h 56m
United Airlines
Deal found 3/27![United Airlines logo]()
$600
Last-minute flights from Boston to IdahoDiscover last-minute flight deals from Boston to Idaho. Data last updated March 28, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Idaho. Data last updated March 28, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/25. 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.
Mon 4/136:10 am
BOS
- BOI
1 stop10h 53m
Delta
Wed 4/155:34 am
BOI
- BOS
1 stop9h 30m
Delta
Deal found 3/25![Delta logo]()
$366
This Delta deal was found by Cheapflights users on 3/25. 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.
Tue 4/145:50 am
BOS
- GEG
1 stop10h 14m
Delta
Tue 4/1410:40 pm
GEG
- BOS
1 stop8h 58m
Delta
Deal found 3/25![Delta logo]()
$377
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 4/257:00 am
BOS
- GEG
1 stop9h 23m
Alaska Airlines
Sat 5/25:00 am
GEG
- BOS
1 stop9h 42m
Alaska Airlines
Deal found 3/25![Alaska Airlines logo]()
$317
This United Airlines deal was found by Cheapflights users on 3/26. 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 4/257:05 am
BOS
- GEG
2 stops11h 10m
United Airlines
Sat 5/21:41 pm
GEG
- BOS
1 stop7h 18m
United Airlines
Deal found 3/26![United Airlines logo]()
$322
This Delta deal was found by Cheapflights users on 3/26. 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 4/276:10 am
BOS
- BOI
1 stop10h 53m
Delta
Tue 5/55:40 am
BOI
- BOS
1 stop8h 02m
Delta
Deal found 3/26![Delta logo]()
$301
This Southwest deal was found by Cheapflights users on 3/26. 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.
Mon 4/275:05 pm
BOS
- BOI
1 stop8h 25m
Southwest
Tue 5/56:00 am
BOI
- BOS
2 stops10h 35m
Southwest
Deal found 3/26![Southwest logo]()
$306
This Delta deal was found by Cheapflights users on 3/28. 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.
Mon 4/276:15 am
BOS
- SUN
1 stop7h 46m
Delta
Mon 5/412:42 pm
SUN
- BOS
1 stop9h 15m
Delta
Deal found 3/28![Delta logo]()
$381
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Wed 4/296:30 am
BOS
- BOI
1 stop8h 19m
American Airlines
Sat 5/21:29 pm
BOI
- BOS
1 stop8h 56m
American Airlines
Deal found 3/27![American Airlines logo]()
$313
This American Airlines deal was found by Cheapflights users on 3/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:30 am
BOS
- GEG
1 stop9h 02m
American Airlines
Thu 5/71:13 pm
GEG
- BOS
1 stop8h 12m
American Airlines
Deal found 3/26![American Airlines logo]()
$352
This Delta deal was found by Cheapflights users on 3/24. 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 4/308:05 am
BOS
- BOI
1 stop8h 21m
Delta
Mon 5/411:35 pm
BOI
- BOS
1 stop10h 00m
Delta
Deal found 3/24![Delta logo]()
$357
This Delta deal was found by Cheapflights users on 3/26. 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 4/306:15 am
BOS
- IDA
1 stop8h 11m
Delta
Wed 5/66:58 pm
IDA
- BOS
1 stop9h 02m
Delta
Deal found 3/26![Delta logo]()
$369
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Thu 4/303:18 pm
BOS
- BOI
1 stop9h 36m
American Airlines
Mon 5/41:29 pm
BOI
- BOS
1 stop8h 56m
American Airlines
Deal found 3/24![American Airlines logo]()
$379
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 28, 2026.
Search for one-way flight options from Boston to Idaho. Find affordable one-way fares based on user searches. Data last updated March 28, 2026.
This Delta deal was found by Cheapflights users on 3/25. 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.
Tue 5/266:10 am
BOS
- BOI
1 stop7h 46m
Delta
Deal found 3/25![Delta logo]()
$137
This American Airlines deal was found by Cheapflights users on 3/25. 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.
Wed 4/156:30 am
BOS
- GEG
1 stop9h 02m
American Airlines
Deal found 3/25![American Airlines logo]()
$138
This United Airlines deal was found by Cheapflights users on 3/26. 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 5/511:27 am
BOS
- GEG
2 stops12h 49m
United Airlines
Deal found 3/26![United Airlines logo]()
$143
This American Airlines deal was found by Cheapflights users on 3/24. 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 5/276:00 am
BOS
- GEG
2 stops10h 14m
American Airlines
Deal found 3/24![American Airlines logo]()
$152
This Delta deal was found by Cheapflights users on 3/27. 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.
Sat 5/98:10 am
BOS
- BOI
1 stop7h 08m
Delta
Deal found 3/27![Delta logo]()
$157
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 4/254:28 pm
BOS
- GEG
1 stop8h 43m
United Airlines
Deal found 3/27![United Airlines logo]()
$159
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 5/93:05 pm
BOS
- BOI
2 stops10h 36m
American Airlines
Deal found 3/27![American Airlines logo]()
$162
This Delta deal was found by Cheapflights users on 3/26. 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.
Sat 6/65:51 am
BOS
- BOI
1 stop9h 27m
Delta
Deal found 3/26![Delta logo]()
$165
This American Airlines deal was found by Cheapflights users on 3/25. 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.
Thu 5/74:24 pm
BOS
- GEG
1 stop9h 45m
American Airlines
Deal found 3/25![American Airlines logo]()
$167
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 5/236:00 am
BOS
- BOI
1 stop11h 07m
American Airlines
Deal found 3/27![American Airlines logo]()
$167
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:51 am
BOS
- BOI
1 stop9h 27m
Delta
Deal found 3/23![Delta logo]()
$179
This Delta deal was found by Cheapflights users on 3/26. 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.
Wed 5/66:15 am
BOS
- IDA
1 stop8h 11m
Delta
Deal found 3/26![Delta logo]()
$185
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 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $273 (Delta) |
One-way from | $137 (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 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
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Sat 5/2
4:33 pm-11:55 pm
1 stop10h 22m
Spokane
Wed 5/6
7:41 pm-7:12 am
1 stop8h 31m
$311
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Sat 4/25
7:05 am-3:15 pm
2 stops11h 10m
Spokane
Sat 5/2
1:41 pm-11:59 pm
1 stop7h 18m
$322
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Fri 6/5
11:35 am-11:25 pm
1 stop14h 50m
Spokane
Tue 6/9
2:55 pm-12:45 am
1 stop6h 50m
$366
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Sat 5/16
5:35 am-12:43 pm
1 stop9h 08m
Boise Air Term. Gowen Fld
Tue 5/19
12:15 pm-12:40 am
1 stop10h 25m
$366
BostonIdaho Falls
BOS - IDA
BOSIDA
Boston Logan Intl
Tue 6/2
6:00 am-1:17 pm
1 stop9h 17m
Idaho Falls Fanning Field
Sat 6/6
6:00 am-4:32 pm
1 stop8h 32m
$369
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Mon 6/1
6:15 am-2:34 pm
1 stop10h 19m
Boise Air Term. Gowen Fld
Sat 6/6
6:41 pm-6:20 am
1 stop9h 39m
$385
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Sat 5/30
6:10 am-12:11 pm
1 stop8h 01m
Boise Air Term. Gowen Fld
Sat 6/6
6:41 pm-6:20 am
1 stop9h 39m
$385
BostonIdaho Falls
BOS - IDA
BOSIDA
Boston Logan Intl
Wed 5/6
6:15 am-12:26 pm
1 stop8h 11m
Idaho Falls Fanning Field
Sun 5/10
6:54 pm-6:20 am
1 stop9h 26m
$394
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Mon 6/1
3:45 pm-12:45 am
2 stops11h 00m
Boise Air Term. Gowen Fld
Sat 6/6
3:15 pm-12:35 am
1 stop7h 20m
$399
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
9:00 am-6:20 am
1 stop19h 20m
$400
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-IDA
BOS-SUN
BOS-WYS
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-IDA
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.
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 March 28, 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.
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Comfort
8.0
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 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 March 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$249 | Average$607 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$264 | Average$493 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$282 | Average$579 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$296 | Average$590 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$370 | Average$466 | FlexibilityNo cancel fee | On-time63% |