$82+ Cheap flights from Washington 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
Sep 10 — Sep 171
Round-trip
1 adult, Economy
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Cheapest flights from Washington to IdahoExplore the most affordable flight options available from Washington to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.
Explore the most affordable flight options available from Washington to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.
This Super.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/159:34 pm -
1 stop16h 23m
Thu 10/223:52 pm -
1 stop5h 47m
Deal found 8/9![Frontier logo]()
$160
This CheapOair deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:20 pm -
1 stop22h 09m
Fri 9/112:50 pm -
1 stop21h 46m
Deal found 8/11![Frontier logo]()
$164
This CheapOair deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/89:34 pm -
1 stop16h 23m
Mon 10/123:52 pm -
1 stop5h 47m
Deal found 8/11![Frontier logo]()
$179
This Faresmojo deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:15 am -
Nonstop1h 22m
Sat 9/197:05 am -
Nonstop1h 25m
Deal found 8/10![JetBlue logo]()
$180
This Southwest deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 9/293:50 pm -
1 stop5h 30m
Sat 10/34:05 pm -
1 stop6h 50m
Deal found 8/9![Southwest logo]()
$186
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:45 pm -
Nonstop1h 21m
Wed 10/149:15 am -
Nonstop1h 30m
Deal found 8/10![Delta logo]()
$189
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/97:50 am -
1 stop6h 10m
Tue 9/156:25 am -
1 stop7h 55m
Deal found 8/10![Southwest logo]()
$196
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/215:35 pm -
1 stop4h 20m
Fri 9/252:55 pm -
1 stop8h 10m
Deal found 8/10![Southwest logo]()
$199
This SmartFares deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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.
Sat 9/127:00 am -
Nonstop1h 09m
Sun 9/137:30 am -
Nonstop1h 13m
Deal found 8/10![Alaska Airlines logo]()
$201
This Faresmojo deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:35 pm -
Nonstop1h 43m
Sat 9/123:28 pm -
Nonstop1h 42m
Deal found 8/10![JetBlue logo]()
$201
This Trip.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 9/199:55 am -
Nonstop1h 40m
Sat 9/266:23 am -
Nonstop1h 39m
Deal found 8/9![Alaska Airlines logo]()
$202
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/249:20 am -
1 stop4h 40m
Mon 9/281:55 pm -
1 stop9h 20m
Deal found 8/10![Southwest logo]()
$202
Best flights from Washington to IdahoDiscover carefully curated flight deals from Washington to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.
Discover carefully curated flight deals from Washington to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/293:50 pm -
1 stop5h 30m
Sat 10/34:05 pm -
1 stop6h 50m
Deal found 8/10![Southwest logo]()
$186
This Delta deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 10/68:59 am -
Nonstop1h 28m
Wed 10/146:45 am -
Nonstop1h 54m
Deal found 8/8![Delta logo]()
$207
This Alaska Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/97:00 am -
Nonstop1h 09m
Sat 9/122:42 pm -
Nonstop1h 08m
Deal found 8/10![Alaska Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 9/53:43 pm -
1 stop4h 41m
Sat 9/128:05 am -
1 stop7h 36m
Deal found 8/8![United Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/97:50 am -
1 stop6h 10m
Tue 9/156:25 am -
1 stop7h 55m
Deal found 8/10![Southwest logo]()
$196
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 9/267:15 am -
Nonstop1h 39m
Sat 10/35:59 pm -
Nonstop1h 42m
Deal found 8/11![Delta logo]()
$207
This Alaska Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 9/182:33 pm -
Nonstop1h 22m
Tue 9/221:31 pm -
Nonstop1h 18m
Deal found 8/11![Alaska Airlines logo]()
$217
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/244:20 pm -
1 stop6h 35m
Fri 9/252:55 pm -
1 stop8h 10m
Deal found 8/10![Southwest logo]()
$199
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/124:04 pm -
Nonstop1h 36m
Sun 9/135:59 pm -
Nonstop1h 42m
Deal found 8/10![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/188:08 pm -
Nonstop1h 30m
Sun 9/205:52 pm -
Nonstop1h 41m
Deal found 8/6![Alaska Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 10/155:00 am -
2 stops7h 20m
Fri 10/236:50 pm -
1 stop5h 15m
Deal found 8/10![Southwest logo]()
$210
This Delta deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 11/32:45 pm -
Nonstop1h 29m
Mon 11/98:15 am -
Nonstop1h 58m
Deal found 8/8![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 10/19:33 pm -
Nonstop1h 22m
Fri 10/91:32 pm -
Nonstop1h 18m
Deal found 8/9![Alaska Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 10/156:00 am -
1 stop6h 20m
Thu 10/226:50 pm -
1 stop5h 15m
Deal found 8/10![Southwest logo]()
$212
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/267:15 am -
Nonstop1h 39m
Sun 9/275:59 pm -
Nonstop1h 42m
Deal found 8/6![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 9/182:33 pm -
Nonstop1h 22m
Mon 9/218:25 pm -
Nonstop1h 20m
Deal found 8/7![Alaska Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/126:15 am -
1 stop5h 00m
Sun 9/136:00 am -
1 stop5h 45m
Deal found 8/10![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 9/85:50 pm -
1 stop3h 44m
Sat 9/125:59 pm -
1 stop5h 32m
Deal found 8/8![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 10/297:00 am -
Nonstop1h 08m
Tue 11/34:09 pm -
1 stop3h 35m
Deal found 8/7![Alaska Airlines logo]()
$237
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 9/159:00 am -
1 stop6h 39m
Tue 9/224:25 pm -
1 stop6h 06m
Deal found 8/6![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 10/137:00 am -
1 stop3h 27m
Sat 10/1712:08 pm -
1 stop5h 56m
Deal found 8/10![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/262:40 pm -
1 stop5h 20m
Sun 9/276:00 am -
1 stop5h 45m
Deal found 8/10![Southwest logo]()
$232
This Alaska Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 9/197:03 am -
1 stop6h 19m
Mon 9/218:38 pm -
Nonstop1h 08m
Deal found 8/7![Alaska Airlines logo]()
$237
This Delta deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” 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 9/59:35 pm -
Nonstop1h 24m
Mon 9/79:23 am -
Nonstop1h 30m
Deal found 8/8![Delta logo]()
$219
This United Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 10/318:30 am -
1 stop5h 58m
Tue 11/32:25 pm -
1 stop7h 54m
Deal found 8/7![United Airlines logo]()
$367
This Alaska Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 9/168:42 am -
Nonstop1h 15m
Sat 9/193:34 pm -
Nonstop1h 12m
Deal found 8/9![Alaska Airlines logo]()
$237
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/49:35 pm -
Nonstop1h 24m
Fri 9/119:16 am -
Nonstop1h 29m
Deal found 8/10![Delta logo]()
$219
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 10/205:35 am -
2 stops9h 25m
Sun 10/255:00 am -
1 stop6h 30m
Deal found 8/10![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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 10/319:00 am -
1 stop5h 28m
Wed 11/44:10 pm -
1 stop6h 03m
Deal found 8/6![United Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 9/69:35 pm -
Nonstop1h 24m
Sun 9/139:16 am -
Nonstop1h 29m
Deal found 8/9![Delta logo]()
$219
Last-minute flights from Washington to IdahoDiscover last-minute flight deals from Washington to Idaho. Data last updated August 11, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Idaho. Data last updated August 11, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:20 pm -
1 stop22h 09m
Fri 9/112:50 pm -
1 stop21h 46m
Deal found 8/10![Frontier logo]()
$164
This Faresmojo deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:35 pm -
Nonstop1h 43m
Sat 9/123:28 pm -
Nonstop1h 42m
Deal found 8/10![JetBlue logo]()
$201
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/97:50 am -
1 stop6h 10m
Tue 9/156:25 am -
1 stop7h 55m
Deal found 8/10![Southwest logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/99:45 pm -
1 stop15h 10m
Mon 9/142:50 pm -
1 stop19h 52m
Deal found 8/10![Frontier logo]()
$203
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/94:04 pm -
Nonstop1h 36m
Wed 9/168:55 am -
Nonstop1h 55m
Deal found 8/10![Delta logo]()
$207
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/111:30 pm -
1 stop8h 10m
Sat 9/126:10 am -
1 stop5h 30m
Deal found 8/10![Southwest logo]()
$204
This Faresmojo deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:15 am -
Nonstop1h 22m
Sat 9/197:05 am -
Nonstop1h 25m
Deal found 8/10![JetBlue logo]()
$180
This SmartFares deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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.
Sat 9/127:00 am -
Nonstop1h 09m
Sun 9/137:30 am -
Nonstop1h 13m
Deal found 8/10![Alaska Airlines logo]()
$201
This Trip.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” 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 9/199:55 am -
Nonstop1h 40m
Sat 9/266:23 am -
Nonstop1h 39m
Deal found 8/9![Alaska Airlines logo]()
$202
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/215:35 pm -
1 stop4h 20m
Fri 9/252:55 pm -
1 stop8h 10m
Deal found 8/10![Southwest logo]()
$199
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/249:20 am -
1 stop4h 40m
Mon 9/281:55 pm -
1 stop9h 20m
Deal found 8/10![Southwest logo]()
$202
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/293:50 pm -
1 stop5h 30m
Sat 10/34:05 pm -
1 stop6h 50m
Deal found 8/10![Southwest logo]()
$186
One-way flights from Washington to IdahoSearch for one-way flight options from Washington to Idaho. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
Search for one-way flight options from Washington to Idaho. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
This Super.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2712:24 pm -
1 stop24h 31m
Deal found 8/8![Frontier logo]()
$82
This CheapOair deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:56 pm -
1 stop16h 33m
Deal found 8/6![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 10/117:00 pm -
1 stop18h 57m
Deal found 8/11![Frontier logo]()
$91
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 10/3111:45 am -
1 stop6h 20m
Deal found 8/10![Southwest logo]()
$93
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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 9/285:35 am -
1 stop6h 40m
Deal found 8/11![Southwest logo]()
$98
This Super.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:20 pm -
1 stop22h 09m
Deal found 8/11![Frontier logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” 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.
Thu 10/89:16 pm -
1 stop16h 41m
Deal found 8/11![Frontier logo]()
$105
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/114:20 pm -
1 stop6h 35m
Deal found 8/10![Southwest logo]()
$106
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” 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 9/97:50 am -
1 stop6h 10m
Deal found 8/10![Southwest logo]()
$106
This Super.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:06 pm -
1 stop15h 23m
Deal found 8/8![Frontier logo]()
$108
This CheapOair deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:24 pm -
1 stop24h 31m
Deal found 8/10![Frontier logo]()
$108
This Super.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:45 pm -
1 stop16h 12m
Deal found 8/8![Frontier logo]()
$109
Find flight deals from Washington to Idaho
Keep the following information in mind while searching for Washington to Idaho flight deals. Data was last updated August 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $160 (Super.com) |
One-way from | $82 (Super.com) |
Popular in | July |
Cheapest in | January |
Average price | $242 |
Good round-trip deal | $177 or less |
Good one-way deal | $143 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington 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 August 11, 2026.
Use the filters below to find and compare flights from Washington to Idaho 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
Tue 9/29
3:50 pm-10:20 pm
1 stop5h 30m
Boise Air Term. Gowen Fld
Sat 10/3
4:05 pm-9:55 pm
1 stop6h 50m
$186
PortlandBoise
PDX Portland - BOI Boise Air Term. Gowen Fld
PDXBOI
Portland
Wed 9/9
7:50 am-3:00 pm
1 stop6h 10m
Boise Air Term. Gowen Fld
Tue 9/15
6:25 am-1:20 pm
1 stop7h 55m
$196
SpokaneBoise
GEG Spokane - BOI Boise Air Term. Gowen Fld
GEGBOI
Spokane
Thu 9/24
4:20 pm-11:55 pm
1 stop6h 35m
Boise Air Term. Gowen Fld
Fri 9/25
2:55 pm-10:05 pm
1 stop8h 10m
$199
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Tue 10/6
8:59 am-11:27 am
Nonstop1h 28m
Boise Air Term. Gowen Fld
Wed 10/14
6:45 am-7:39 am
Nonstop1h 54m
$207
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Sat 9/26
7:15 am-9:54 am
Nonstop1h 39m
Boise Air Term. Gowen Fld
Sat 10/3
5:59 pm-6:41 pm
Nonstop1h 42m
$207
PortlandBoise
PDX Portland - BOI Boise Air Term. Gowen Fld
PDXBOI
Portland
Thu 10/15
5:00 am-1:20 pm
2 stops7h 20m
Boise Air Term. Gowen Fld
Fri 10/23
6:50 pm-11:05 pm
1 stop5h 15m
$210
PortlandBoise
PDX Portland - BOI Boise Air Term. Gowen Fld
PDXBOI
Portland
Thu 10/15
6:00 am-1:20 pm
1 stop6h 20m
Boise Air Term. Gowen Fld
Thu 10/22
6:50 pm-11:05 pm
1 stop5h 15m
$212
Quickest round-trip
SpokaneBoise
GEG Spokane - BOI Boise Air Term. Gowen Fld
GEGBOI
Spokane
Wed 9/9
7:00 am-9:09 am
Nonstop1h 09m
Boise Air Term. Gowen Fld
Sat 9/12
2:42 pm-2:50 pm
Nonstop1h 08m
$217
PortlandBoise
PDX Portland - BOI Boise Air Term. Gowen Fld
PDXBOI
Portland
Fri 9/18
2:33 pm-4:55 pm
Nonstop1h 22m
Boise Air Term. Gowen Fld
Tue 9/22
1:31 pm-1:49 pm
Nonstop1h 18m
$217
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Sat 9/12
4:04 pm-6:40 pm
Nonstop1h 36m
Boise Air Term. Gowen Fld
Sun 9/13
5:59 pm-6:41 pm
Nonstop1h 42m
$217
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Washington with our price prediction graph.
PDX-BOI
SEA-GEG
GEG-BOI
SEA-LWS
SEA-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 Idaho
USWA-USID
PDX-BOI
SEA-GEG
GEG-BOI
SEA-LWS
What is the cheapest month to book a flight from State of Washington to Idaho?
Currently, January is the cheapest month in which you can book a flight from State of Washington to Idaho (average of $194). Flying from State of Washington to Idaho in July is currently the most expensive (average of $355). 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 ID?
Find hourly flight availability from Washington to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 11, 2026.
It’s optimal to fly from State of Washington to Idaho in the morning. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the evening.
Weekly flight availability from State of Washington to Idaho
Explore weekly flight availability from Washington to Idaho. 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 August 11, 2026.
The most flights from USWA to USID are scheduled on a Friday (47 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (23 on average).
How much does it cost to fly round-trip from State of Washington to Idaho?
Airfare is below average for this route at the moment.
State of Washington to Idaho flights typically cost between $187 and $417 in September.The cheapest round-trip price found within the last 5 days was $181 on Frontier (Sep 9-Sep 14).
How far ahead should I book a flight from State of Washington to Idaho?
The price you pay for your flight from State of Washington to Idaho 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 Idaho?
Use this chart to determine the cheapest time to fly round-trip from Washington to Idaho. Price data was last updated on August 8, 2026.
Travelers seeking maximum savings on their State of Washington to Idaho flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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 August 11, 2026.
Read through reviews of airlines operating flights from Washington to Idaho, such as Alaska Airlines,Delta, andHawaiian Airlines. 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.
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.0
Food
7.0
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.0
Food
7.0
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.0
Food
7.0
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.0
Food
7.0
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Related info for your journey
Find useful and relevant information for your journey from Washington 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 Washington 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 Washington to Idaho by cabin class
Find flights from Washington to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington and Idaho flights
Browse other Washington and Idaho flight options. Last updated on August 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Idaho
Find the right flight back to Washington after your stay in Idaho
Washington to Idaho flights
Consider these flights traveling from Washington to Idaho.
Top 3 airlines flying from Washington to Idaho
Discover the top 3 airlines that operate flights from Washington 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 August 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$79 | Average$370 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$107 | Average$314 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$137 | Average$297 | FlexibilityNo cancel fee | On-time85% |