$119+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — BOI
Mar 5 — Mar 121
1 adult, Economy
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Find cheap flights from Boston to Idaho with Cheapflights
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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
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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 February 3, 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 February 3, 2026.
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/42:36 pm
BOS
- GEG
1 stop9h 36m
American Airlines
Wed 3/116:00 am
GEG
- BOS
1 stop8h 14m
American Airlines
Deal found 2/1![American Airlines logo]()
$257
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/177:55 am
BOS
- BOI
1 stop10h 54m
United Airlines
Tue 3/245:00 am
BOI
- BOS
1 stop6h 42m
United Airlines
Deal found 2/2![United Airlines logo]()
$257
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/229:30 am
BOS
- GEG
2 stops12h 21m
United Airlines
Tue 4/281:43 pm
GEG
- BOS
1 stop7h 16m
United Airlines
Deal found 2/2![United Airlines logo]()
$262
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/43:09 pm
BOS
- GEG
1 stop9h 08m
United Airlines
Wed 3/116:37 pm
GEG
- BOS
2 stops10h 08m
United Airlines
Deal found 2/1![United Airlines logo]()
$284
This Expedia deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/237:00 am
BOS
- SUN
1 stop13h 22m
Alaska Airlines
Wed 2/257:04 pm
SUN
- BOS
1 stop9h 50m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/185:50 am
BOS
- BOI
1 stop10h 15m
Delta
Tue 3/247:30 pm
BOI
- BOS
1 stop9h 20m
Delta
Deal found 2/2![Delta logo]()
$293
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/256:30 am
BOS
- GEG
1 stop8h 14m
American Airlines
Mon 3/23:10 pm
GEG
- BOS
1 stop11h 25m
American Airlines
Deal found 2/1![American Airlines logo]()
$297
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/244:47 pm
BOS
- BOI
1 stop8h 36m
United Airlines
Thu 2/261:44 pm
BOI
- BOS
1 stop9h 05m
United Airlines
Deal found 2/2![United Airlines logo]()
$297
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Sat 2/286:24 pm
BOS
- BOI
1 stop17h 16m
Alaska Airlines
Tue 3/104:30 pm
BOI
- BOS
2 stops12h 24m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$315
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/116:50 pm
BOS
- GEG
1 stop8h 12m
Delta
Fri 3/132:15 pm
GEG
- BOS
1 stop6h 34m
Delta
Deal found 2/1![Delta logo]()
$322
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/241:00 pm
BOS
- BOI
2 stops11h 22m
American Airlines
Thu 2/266:33 pm
BOI
- BOS
1 stop9h 02m
American Airlines
Deal found 2/2![American Airlines logo]()
$322
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/2212:07 pm
BOS
- GEG
2 stops11h 26m
American Airlines
Tue 4/286:00 am
GEG
- BOS
2 stops10h 31m
American Airlines
Deal found 2/2![American Airlines logo]()
$324
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 February 3, 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 February 3, 2026.
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/2211:00 am
BOS
- GEG
1 stop10h 51m
United Airlines
Tue 4/281:43 pm
GEG
- BOS
1 stop7h 16m
United Airlines
Deal found 2/2![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 4/288:05 am
BOS
- GEG
1 stop7h 58m
Delta
Sat 5/25:10 pm
GEG
- BOS
1 stop9h 50m
Delta
Deal found 2/1![Delta logo]()
$257
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/2212:07 pm
BOS
- GEG
2 stops11h 26m
American Airlines
Tue 4/286:00 am
GEG
- BOS
2 stops10h 31m
American Airlines
Deal found 2/2![American Airlines logo]()
$324
This Expedia deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/234:36 pm
BOS
- SUN
2 stops27h 46m
Alaska Airlines
Wed 2/257:04 pm
SUN
- BOS
1 stop9h 50m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$355
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/12:00 pm
BOS
- BOI
2 stops10h 20m
Southwest
Wed 4/810:05 am
BOI
- BOS
2 stops10h 15m
Southwest
Deal found 2/2![Southwest logo]()
$401
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/43:09 pm
BOS
- GEG
1 stop9h 08m
United Airlines
Wed 3/116:37 pm
GEG
- BOS
2 stops10h 08m
United Airlines
Deal found 2/1![United Airlines logo]()
$284
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/188:05 am
BOS
- BOI
1 stop8h 00m
Delta
Wed 3/2511:30 pm
BOI
- BOS
1 stop8h 34m
Delta
Deal found 2/2![Delta logo]()
$293
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/244:47 pm
BOS
- BOI
1 stop8h 36m
United Airlines
Thu 2/261:44 pm
BOI
- BOS
1 stop9h 05m
United Airlines
Deal found 2/2![United Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 4/26:52 am
BOS
- SUN
1 stop8h 02m
American Airlines
Sun 4/51:29 pm
SUN
- BOS
1 stop8h 36m
American Airlines
Deal found 2/3![American Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/285:35 am
BOS
- GEG
1 stop9h 02m
Delta
Mon 3/302:15 pm
GEG
- BOS
1 stop6h 34m
Delta
Deal found 2/2![Delta logo]()
$322
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Sat 3/216:10 pm
BOS
- SUN
1 stop19h 08m
Alaska Airlines
Sat 3/2812:00 pm
SUN
- BOS
1 stop9h 59m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$365
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/116:50 pm
BOS
- GEG
1 stop8h 12m
Delta
Fri 3/132:15 pm
GEG
- BOS
1 stop6h 34m
Delta
Deal found 2/1![Delta logo]()
$322
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/132:59 pm
BOS
- GEG
1 stop9h 19m
United Airlines
Wed 3/186:37 pm
GEG
- BOS
2 stops10h 08m
United Airlines
Deal found 2/2![United Airlines logo]()
$327
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/2712:32 pm
BOS
- SUN
1 stop11h 30m
American Airlines
Thu 3/261:27 pm
SUN
- BOS
1 stop8h 44m
American Airlines
Deal found 2/1![American Airlines logo]()
$365
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/209:02 am
BOS
- SUN
1 stop11h 20m
Alaska Airlines
Fri 2/2711:52 am
SUN
- BOS
1 stop10h 07m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$365
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Sun 4/55:35 am
BOS
- BOI
2 stops12h 10m
Southwest
Wed 4/83:15 pm
BOI
- BOS
1 stop6h 50m
Southwest
Deal found 2/2![Southwest logo]()
$402
This Alaska Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/285:44 pm
BOS
- JAC
1 stop20h 40m
Alaska Airlines
Sat 3/711:48 am
JAC
- BOS
2 stops16h 04m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$368
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/206:52 am
BOS
- SUN
1 stop8h 02m
American Airlines
Fri 2/277:40 am
SUN
- BOS
2 stops13h 08m
American Airlines
Deal found 2/2![American Airlines logo]()
$370
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/226:37 pm
BOS
- GEG
1 stop8h 17m
Delta
Sat 2/285:00 am
GEG
- BOS
1 stop7h 59m
Delta
Deal found 2/1![Delta logo]()
$348
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/24:25 pm
BOS
- GEG
1 stop8h 39m
United Airlines
Fri 3/66:37 pm
GEG
- BOS
1 stop8h 14m
United Airlines
Deal found 2/1![United Airlines logo]()
$362
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/258:00 am
BOS
- SUN
2 stops16h 02m
American Airlines
Tue 3/241:27 pm
SUN
- BOS
1 stop8h 38m
American Airlines
Deal found 2/3![American Airlines logo]()
$370
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/187:15 am
BOS
- BOI
2 stops16h 52m
Alaska Airlines
Wed 3/2511:58 am
BOI
- BOS
1 stop10h 01m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$375
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/293:30 pm
BOS
- BOI
1 stop10h 29m
Delta
Tue 8/1812:42 pm
BOI
- BOS
1 stop9h 41m
Delta
Deal found 2/1![Delta logo]()
$360
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 5/57:09 am
BOS
- IDA
1 stop8h 16m
United Airlines
Sat 5/910:40 am
IDA
- BOS
2 stops12h 19m
United Airlines
Deal found 2/2![United Airlines logo]()
$364
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/31:00 pm
BOS
- BOI
2 stops11h 22m
American Airlines
Sun 3/81:39 pm
BOI
- BOS
1 stop8h 12m
American Airlines
Deal found 2/3![American Airlines logo]()
$371
This Alaska Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/187:15 am
BOS
- BOI
2 stops16h 52m
Alaska Airlines
Tue 3/246:00 am
BOI
- BOS
1 stop9h 05m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$375
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/811:00 am
BOS
- JAC
2 stops11h 53m
United Airlines
Wed 4/152:35 pm
JAC
- BOS
1 stop7h 24m
United Airlines
Deal found 2/2![United Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 6/67:45 am
BOS
- GEG
1 stop10h 48m
Delta
Sat 6/1311:33 am
GEG
- BOS
1 stop7h 47m
Delta
Deal found 2/2![Delta logo]()
$367
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/276:00 am
BOS
- SUN
1 stop7h 53m
United Airlines
Thu 3/2612:34 pm
SUN
- BOS
1 stop6h 54m
United Airlines
Deal found 2/1![United Airlines logo]()
$365
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/2411:15 am
BOS
- BOI
1 stop11h 46m
Delta
Mon 3/307:30 pm
BOI
- BOS
1 stop9h 20m
Delta
Deal found 2/1![Delta logo]()
$370
Last-minute flights from Boston to IdahoDiscover last-minute flight deals from Boston to Idaho. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Idaho. Data last updated February 3, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/237:00 am
BOS
- SUN
1 stop13h 22m
Alaska Airlines
Wed 2/257:04 pm
SUN
- BOS
1 stop9h 50m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$289
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/244:47 pm
BOS
- BOI
1 stop8h 36m
United Airlines
Thu 2/261:44 pm
BOI
- BOS
1 stop9h 05m
United Airlines
Deal found 2/2![United Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/241:00 pm
BOS
- BOI
2 stops11h 22m
American Airlines
Thu 2/266:33 pm
BOI
- BOS
1 stop9h 02m
American Airlines
Deal found 2/2![American Airlines logo]()
$322
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 2/256:30 am
BOS
- GEG
1 stop8h 14m
American Airlines
Mon 3/23:10 pm
GEG
- BOS
1 stop11h 25m
American Airlines
Deal found 2/1![American Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/265:30 am
BOS
- BOI
1 stop9h 18m
American Airlines
Tue 3/31:30 pm
BOI
- BOS
1 stop7h 31m
American Airlines
Deal found 2/2![American Airlines logo]()
$328
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Sat 2/286:24 pm
BOS
- BOI
1 stop17h 16m
Alaska Airlines
Tue 3/104:30 pm
BOI
- BOS
2 stops12h 24m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$315
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/42:36 pm
BOS
- GEG
1 stop9h 36m
American Airlines
Wed 3/116:00 am
GEG
- BOS
1 stop8h 14m
American Airlines
Deal found 2/1![American Airlines logo]()
$257
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/43:09 pm
BOS
- GEG
1 stop9h 08m
United Airlines
Wed 3/116:37 pm
GEG
- BOS
2 stops10h 08m
United Airlines
Deal found 2/1![United Airlines logo]()
$284
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/116:50 pm
BOS
- GEG
1 stop8h 12m
Delta
Fri 3/132:15 pm
GEG
- BOS
1 stop6h 34m
Delta
Deal found 2/1![Delta logo]()
$322
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/132:59 pm
BOS
- GEG
1 stop9h 19m
United Airlines
Wed 3/186:37 pm
GEG
- BOS
2 stops10h 08m
United Airlines
Deal found 2/2![United Airlines logo]()
$327
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/177:55 am
BOS
- BOI
1 stop10h 54m
United Airlines
Tue 3/245:00 am
BOI
- BOS
1 stop6h 42m
United Airlines
Deal found 2/2![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/185:50 am
BOS
- BOI
1 stop10h 15m
Delta
Tue 3/247:30 pm
BOI
- BOS
1 stop9h 20m
Delta
Deal found 2/2![Delta logo]()
$293
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 February 3, 2026.
Search for one-way flight options from Boston to Idaho. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/39:02 am
BOS
- GEG
1 stop11h 01m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/1111:51 am
BOS
- BOI
2 stops25h 29m
Frontier
Deal found 2/1![Frontier logo]()
$125
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/36:30 am
BOS
- GEG
1 stop8h 14m
American Airlines
Deal found 2/1![American Airlines logo]()
$129
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/114:37 pm
BOS
- BOI
1 stop9h 01m
American Airlines
Deal found 2/1![American Airlines logo]()
$129
This Travelocity deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Wed 3/47:00 am
BOS
- IDA
1 stop11h 43m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 3/115:27 am
BOS
- BOI
3 stops31h 53m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$142
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/2411:15 am
BOS
- BOI
1 stop11h 46m
Delta
Deal found 2/2![Delta logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Tue 3/245:49 pm
BOS
- BOI
3 stops43h 31m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$158
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 4/228:30 am
BOS
- BOI
2 stops11h 35m
United Airlines
Deal found 2/1![United Airlines logo]()
$169
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” 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 6/68:10 am
BOS
- BOI
1 stop7h 09m
Delta
Deal found 2/1![Delta logo]()
$182
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/310:30 am
BOS
- GEG
2 stops13h 47m
United Airlines
Deal found 2/3![United Airlines logo]()
$184
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 5/910:00 am
BOS
- BOI
2 stops11h 33m
United Airlines
Deal found 2/2![United Airlines logo]()
$184
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 February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $257 (American Airlines) |
One-way from | $119 (Alaska Airlines) |
Popular in | December |
Cheapest in | July |
Average price | $502 |
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 February 3, 2026.
Use the filters below to find and compare flights from Boston to Idaho that are best for you.
Fly from
Boston
Fly to
Idaho
Route
Depart
Return
Price
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Wed 4/22
11:00 am-6:51 pm
1 stop10h 51m
Spokane
Tue 4/28
1:43 pm-11:59 pm
1 stop7h 16m
$257
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Tue 4/28
8:05 am-1:03 pm
1 stop7h 58m
Spokane
Sat 5/2
5:10 pm-6:00 am
1 stop9h 50m
$257
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Wed 3/4
3:09 pm-9:17 pm
1 stop9h 08m
Spokane
Wed 3/11
6:37 pm-7:45 am
2 stops10h 08m
$284
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Wed 3/18
8:05 am-2:05 pm
1 stop8h 00m
Boise Air Term. Gowen Fld
Wed 3/25
11:30 pm-10:04 am
1 stop8h 34m
$293
BostonBoise
BOS - BOI
BOSBOI
Boston Logan Intl
Tue 2/24
4:47 pm-11:23 pm
1 stop8h 36m
Boise Air Term. Gowen Fld
Thu 2/26
1:44 pm-12:49 am
1 stop9h 05m
$297
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Sat 3/28
5:35 am-11:37 am
1 stop9h 02m
Spokane
Mon 3/30
2:15 pm-11:49 pm
1 stop6h 34m
$322
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Wed 3/11
6:50 pm-12:02 am
1 stop8h 12m
Spokane
Fri 3/13
2:15 pm-11:49 pm
1 stop6h 34m
$322
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Wed 4/22
12:07 pm-8:33 pm
2 stops11h 26m
Spokane
Tue 4/28
6:00 am-7:31 pm
2 stops10h 31m
$324
BostonSpokane
BOS - GEG
BOSGEG
Boston Logan Intl
Fri 3/13
2:59 pm-9:18 pm
1 stop9h 19m
Spokane
Wed 3/18
6:37 pm-7:45 am
2 stops10h 08m
$327
BostonHailey
BOS - SUN
BOSSUN
Boston Logan Intl
Thu 4/2
6:52 am-12:54 pm
1 stop8h 02m
Hailey Sun Valley-Friedman
Sun 4/5
1:29 pm-12:05 am
1 stop8h 36m
$341
Showing 1-10 of 60 results
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-SUN
BOS-BOI
BOS-JAC
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-SUN
BOS-BOI
BOS-JAC
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 June is currently the most expensive (average of $320). 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 February 3, 2026.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Boston to Idaho. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
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 for Boston to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
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 February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$239 | Average$493 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$264 | Average$487 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$296 | Average$589 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$369 | Average$629 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$370 | Average$466 | FlexibilityNo cancel fee | On-time63% |