$94+ Cheap flights from Washington to Boise (BOI)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
Oct 17 — Oct 241
Round-trip
1 adult, Economy
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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 Washington to BoiseExplore the most affordable flight options available from Washington to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
Explore the most affordable flight options available from Washington to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:40 am -
1 stop4h 40m
Wed 10/217:40 am -
1 stop6h 35m
Deal found 9/17![Southwest logo]()
$198
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:05 am -
1 stop5h 50m
Tue 10/137:40 am -
1 stop6h 35m
Deal found 9/14![Southwest logo]()
$210
This SmartFares deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:41 pm -
Nonstop1h 25m
Wed 11/41:53 pm -
Nonstop1h 38m
Deal found 9/13![Alaska Airlines logo]()
$210
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/112:15 pm -
1 stop8h 00m
Thu 11/1210:15 am -
1 stop6h 05m
Deal found 9/16![Southwest logo]()
$211
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:55 pm -
Nonstop1h 12m
Wed 10/217:30 am -
Nonstop1h 13m
Deal found 9/15![Alaska Airlines logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:00 pm -
Nonstop0h 57m
Tue 10/274:24 pm -
Nonstop0h 59m
Deal found 9/16![Alaska Airlines logo]()
$217
This Trip.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:29 pm -
Nonstop1h 30m
Sat 10/176:43 am -
Nonstop1h 37m
Deal found 9/12![Alaska Airlines logo]()
$222
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:15 pm -
1 stop4h 55m
Thu 10/226:50 am -
1 stop5h 00m
Deal found 9/15![Southwest logo]()
$223
This Trip.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/179:57 am -
Nonstop1h 38m
Tue 10/206:04 pm -
Nonstop1h 43m
Deal found 9/15![Alaska Airlines logo]()
$223
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/711:40 am -
1 stop7h 50m
Mon 11/95:35 pm -
1 stop7h 35m
Deal found 9/13![Southwest logo]()
$224
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:40 pm -
Nonstop1h 26m
Wed 10/216:43 am -
Nonstop1h 37m
Deal found 9/15![Alaska Airlines logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:43 pm -
1 stop4h 16m
Tue 10/204:24 pm -
Nonstop0h 59m
Deal found 9/16![Alaska Airlines logo]()
$227
Best flights from Washington to BoiseDiscover carefully curated flight deals from Washington to Boise that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
Discover carefully curated flight deals from Washington to Boise that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:40 am -
1 stop4h 40m
Wed 10/216:00 am -
2 stops8h 15m
Deal found 9/15![Southwest logo]()
$204
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:00 am -
Nonstop1h 08m
Wed 10/219:12 am -
1 stop3h 34m
Deal found 9/16![Alaska Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:02 pm -
Nonstop1h 31m
Sun 10/2510:34 am -
Nonstop1h 53m
Deal found 9/16![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/15:00 am -
1 stop5h 12m
Tue 1/54:05 pm -
1 stop5h 43m
Deal found 9/17![United Airlines logo]()
$327
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:05 am -
1 stop5h 50m
Tue 10/137:40 am -
1 stop6h 35m
Deal found 9/14![Southwest logo]()
$210
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:44 am -
Nonstop1h 26m
Sat 10/245:59 am -
Nonstop1h 21m
Deal found 9/16![Alaska Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/711:40 am -
2 stops8h 00m
Mon 11/98:30 pm -
1 stop5h 35m
Deal found 9/16![Southwest logo]()
$216
This Alaska Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:17 am -
Nonstop1h 39m
Sun 10/256:43 am -
Nonstop1h 37m
Deal found 9/12![Alaska Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:35 am -
2 stops9h 25m
Wed 11/412:40 pm -
2 stops10h 40m
Deal found 9/13![Southwest logo]()
$237
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/33:31 pm -
1 stop5h 37m
Sun 11/83:36 pm -
1 stop5h 24m
Deal found 9/15![Delta logo]()
$287
This Alaska Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:43 pm -
1 stop4h 16m
Wed 10/214:24 pm -
Nonstop0h 59m
Deal found 9/13![Alaska Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/223:55 pm -
2 stops8h 50m
Sat 10/244:05 pm -
1 stop7h 20m
Deal found 9/12![Southwest logo]()
$242
This Alaska Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:48 pm -
Nonstop1h 19m
Sun 11/15:43 am -
Nonstop1h 27m
Deal found 9/13![Alaska Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:15 am -
1 stop6h 55m
Sat 12/54:35 pm -
1 stop4h 10m
Deal found 9/17![Southwest logo]()
$246
This Alaska Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/139:32 pm -
Nonstop1h 14m
Mon 11/167:57 pm -
Nonstop1h 30m
Deal found 9/13![Alaska Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:50 am -
1 stop5h 00m
Sun 11/85:00 am -
1 stop5h 30m
Deal found 9/12![Southwest logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:43 pm -
1 stop4h 16m
Tue 10/204:24 pm -
Nonstop0h 59m
Deal found 9/15![Alaska Airlines logo]()
$282
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/23:35 pm -
1 stop5h 20m
Fri 12/43:30 pm -
1 stop7h 45m
Deal found 9/16![Southwest logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:15 am -
Nonstop1h 17m
Sat 12/51:13 pm -
Nonstop1h 35m
Deal found 9/17![Alaska Airlines logo]()
$282
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/126:20 am -
2 stops10h 50m
Mon 12/1411:40 am -
1 stop8h 20m
Deal found 9/14![Southwest logo]()
$262
This Alaska Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/95:50 pm -
Nonstop1h 14m
Sat 1/165:58 pm -
1 stop3h 53m
Deal found 9/14![Alaska Airlines logo]()
$287
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:10 am -
1 stop4h 30m
Mon 11/161:05 pm -
1 stop6h 00m
Deal found 9/12![Southwest logo]()
$267
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:15 am -
1 stop7h 50m
Tue 10/206:35 am -
2 stops8h 00m
Deal found 9/17![Southwest logo]()
$272
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/95:35 pm -
Nonstop1h 07m
Sat 10/104:47 pm -
Nonstop1h 08m
Deal found 9/16![Alaska Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:35 am -
1 stop4h 30m
Sat 10/104:05 pm -
1 stop6h 55m
Deal found 9/13![Southwest logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:00 am -
Nonstop1h 08m
Sun 10/115:59 am -
1 stop4h 31m
Deal found 9/16![Alaska Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:35 am -
1 stop4h 30m
Sun 10/258:10 pm -
1 stop4h 35m
Deal found 9/13![Southwest logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:43 pm -
1 stop4h 16m
Mon 10/196:43 am -
1 stop5h 14m
Deal found 9/14![Alaska Airlines logo]()
$322
This Alaska Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/133:44 pm -
Nonstop0h 57m
Fri 11/138:59 pm -
1 stop20h 56m
Deal found 9/12![Alaska Airlines logo]()
$332
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:35 am -
2 stops9h 25m
Sat 10/1712:25 pm -
2 stops8h 40m
Deal found 9/12![Southwest logo]()
$302
Last-minute flights from Washington to BoiseDiscover last-minute flight deals from Washington to Boise. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Boise. Data last updated September 17, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:05 am -
1 stop5h 50m
Tue 10/137:40 am -
1 stop6h 35m
Deal found 9/14![Southwest logo]()
$210
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:05 am -
1 stop5h 50m
Thu 10/156:50 am -
1 stop5h 00m
Deal found 9/15![Southwest logo]()
$229
This Trip.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:29 pm -
Nonstop1h 30m
Sat 10/176:43 am -
Nonstop1h 37m
Deal found 9/12![Alaska Airlines logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:55 pm -
Nonstop1h 12m
Wed 10/217:30 am -
Nonstop1h 13m
Deal found 9/15![Alaska Airlines logo]()
$217
This Trip.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/179:57 am -
Nonstop1h 38m
Tue 10/206:04 pm -
Nonstop1h 43m
Deal found 9/15![Alaska Airlines logo]()
$223
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:40 pm -
Nonstop1h 26m
Wed 10/216:43 am -
Nonstop1h 37m
Deal found 9/15![Alaska Airlines logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:43 pm -
1 stop4h 16m
Tue 10/204:24 pm -
Nonstop0h 59m
Deal found 9/16![Alaska Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:15 pm -
1 stop4h 55m
Thu 10/226:50 am -
1 stop5h 00m
Deal found 9/15![Southwest logo]()
$223
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:40 am -
1 stop4h 40m
Wed 10/217:40 am -
1 stop6h 35m
Deal found 9/17![Southwest logo]()
$198
This Alaska Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:02 am -
Nonstop1h 30m
Sat 10/245:59 am -
Nonstop1h 21m
Deal found 9/14![Alaska Airlines logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:00 pm -
Nonstop0h 57m
Tue 10/274:24 pm -
Nonstop0h 59m
Deal found 9/16![Alaska Airlines logo]()
$217
This SmartFares deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:41 pm -
Nonstop1h 25m
Wed 11/41:53 pm -
Nonstop1h 38m
Deal found 9/13![Alaska Airlines logo]()
$210
One-way flights from Washington to BoiseSearch for one-way flight options from Washington to Boise. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
Search for one-way flight options from Washington to Boise. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This iWofly deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:03 pm -
Nonstop1h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Alaska Airlines logo]()
$94
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:40 am -
1 stop4h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Southwest logo]()
$99
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:50 am -
1 stop4h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Southwest logo]()
$114
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:40 am -
2 stops9h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Southwest logo]()
$117
This Trip.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:09 am -
1 stop3h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Alaska Airlines logo]()
$118
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:35 am -
1 stop4h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Southwest logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1812:14 pm -
1 stop24h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$121
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:15 pm -
1 stop4h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Southwest logo]()
$124
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:17 am -
1 stop5h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Alaska Airlines logo]()
$124
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:50 am -
1 stop6h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Southwest logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/139:53 pm -
1 stop19h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$127
This Trip.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/289:31 am -
1 stop4h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Alaska Airlines logo]()
$127
Find flight deals from Washington to Boise
Keep the following information in mind while searching for Washington to Boise flight deals. Data was last updated September 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $198 (Southwest) |
One-way from | $94 (iWofly) |
Popular in | July |
Cheapest in | January |
Average price | $297 |
Good round-trip deal | $217 or less |
Good one-way deal | $148 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington to Boise 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 7,457,451 searches. Data last updated September 17, 2026.
Use the filters below to find and compare flights from Washington to Boise that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SpokaneBoise
GEG Spokane - BOI Boise Air Term. Gowen Fld
GEGBOI
Spokane
Sat 10/31
5:45 am-1:00 pm
1 stop6h 15m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$99
SpokaneBoise
GEG Spokane - BOI Boise Air Term. Gowen Fld
GEGBOI
Spokane
Sat 10/24
6:05 am-12:55 pm
1 stop5h 50m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$99
SpokaneBoise
GEG Spokane - BOI Boise Air Term. Gowen Fld
GEGBOI
Spokane
Tue 10/13
5:40 am-11:20 am
1 stop4h 40m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$99
SpokaneBoise
GEG Spokane - BOI Boise Air Term. Gowen Fld
GEGBOI
Spokane
Tue 10/20
3:25 pm-11:15 pm
2 stops6h 50m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$105
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Sat 12/12
5:05 am-12:15 pm
1 stop6h 10m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$114
SpokaneBoise
GEG Spokane - BOI Boise Air Term. Gowen Fld
GEGBOI
Spokane
Thu 10/29
10:35 am-4:05 pm
1 stop4h 30m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$119
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Tue 10/13
5:35 am-4:00 pm
2 stops9h 25m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$119
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Sat 11/14
10:17 am-5:04 pm
1 stop5h 47m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$124
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Tue 11/17
7:40 am-12:57 pm
1 stop4h 17m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$124
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Mon 11/16
3:35 pm-11:33 pm
1 stop6h 58m
Boise Air Term. Gowen Fld
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$134
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington to Boise
Have a flexible travel schedule? Discover the best time to fly to Boise from Washington with our price prediction graph.
GEG-BOI
SEA-BOI
PDX-BOI
PUW-BOI
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 Washington to Boise
USWA-BOI
GEG-BOI
SEA-BOI
PDX-BOI
PUW-BOI
What is the cheapest month to book a flight from State of Washington to Boise?
Currently, January is the cheapest month in which you can book a flight from State of Washington to Boise (average of $162). Flying from State of Washington to Boise in June is currently the most expensive (average of $321). 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.
What is the cheapest time of day to fly from WA to BOI?
Find hourly flight availability from Washington to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2026.
One of the essential ways to save on airfare from State of Washington to Boise is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 21% on airfare.
Weekly flight availability from State of Washington to Boise
Explore weekly flight availability from Washington to Boise. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 17, 2026.
The most flights from USWA to BOI are scheduled on a Tuesday (41 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (24 on average).
How much does it cost to fly round-trip from State of Washington to Boise?
Airfare is below average for this route at the moment.
State of Washington to Boise flights typically cost between $217 and $387 in October.The cheapest round-trip price found within the last 5 days was $210 on Alaska Airlines (Oct 28-Nov 4).
How far ahead should I book a flight from State of Washington to Boise?
The price you pay for your flight from State of Washington to Boise may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from State of Washington to Boise?
Use this chart to determine the cheapest time to fly round-trip from Washington to Boise. Price data was last updated on September 12, 2026.
Travelers seeking maximum savings on their State of Washington to Boise flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Washington to Boise. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Boise?
Book flights to Boise if you plan to visit one of these locationsOntario
Meridian
Nampa
Caldwell
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Other flights to Boise
Explore flights to Boise departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 17, 2026.
Complete your trip
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Washington and Boise flights
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Top 2 airlines flying from Washington to Boise
Discover the top 2 airlines that operate flights from Washington to Boise. 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 7,457,451 searches. Data last updated September 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$79 | Average$203 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$105 | Average$297 | FlexibilityNo cancel fee | On-time75% |