$85+ Cheap flights from Idaho to Seattle (SEA)
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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
Sep 10 — Sep 171
Round-trip
1 adult, Economy
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1. Tell us where you want to go
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 Idaho to SeattleExplore the most affordable flight options available from Idaho to Seattle. 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 Idaho to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.
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.
Tue 9/11:24 pm -
1 stop20h 55m
Sat 9/57:06 pm -
1 stop15h 23m
Deal found 8/11![Frontier logo]()
$176
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.
Sat 9/121:36 pm -
Nonstop1h 14m
Sat 9/124:59 pm -
1 stop6h 54m
Deal found 8/10![Alaska Airlines logo]()
$181
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 9/91:30 pm -
1 stop22h 19m
Thu 9/101:03 pm -
Nonstop1h 27m
Deal found 8/10![Alaska Airlines logo]()
$182
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:15 am -
Nonstop1h 30m
Tue 10/209:45 pm -
Nonstop1h 21m
Deal found 8/7![Delta logo]()
$189
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.
Tue 9/11:24 pm -
1 stop20h 55m
Wed 9/27:06 pm -
1 stop15h 23m
Deal found 8/11![Frontier logo]()
$194
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.
Sat 8/296:23 am -
Nonstop1h 39m
Sat 8/2910:18 am -
1 stop9h 02m
Deal found 8/6![Alaska Airlines logo]()
$201
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 9/184:20 pm -
Nonstop1h 36m
Fri 9/188:49 pm -
1 stop22h 31m
Deal found 8/11![Alaska Airlines logo]()
$205
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.
Sat 9/124:20 pm -
Nonstop1h 36m
Sat 9/197:15 am -
Nonstop1h 41m
Deal found 8/11![Alaska Airlines logo]()
$207
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/122:16 pm -
Nonstop1h 36m
Sun 9/137:15 am -
Nonstop1h 41m
Deal found 8/7![Alaska Airlines logo]()
$215
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 8/295:52 am -
Nonstop1h 17m
Sat 8/2910:18 am -
1 stop12h 31m
Deal found 8/7![Alaska Airlines logo]()
$215
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 9/245:52 pm -
Nonstop1h 41m
Thu 9/248:49 pm -
1 stop22h 31m
Deal found 8/7![Alaska Airlines logo]()
$217
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.
Fri 9/49:23 am -
Nonstop1h 30m
Tue 9/89:45 pm -
Nonstop1h 23m
Deal found 8/9![Delta logo]()
$219
Best flights from Idaho to SeattleDiscover carefully curated flight deals from Idaho to Seattle 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 Idaho to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.
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 9/199:16 am -
Nonstop1h 29m
Sat 9/269:45 pm -
Nonstop1h 23m
Deal found 8/8![Delta logo]()
$189
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 9/164:20 pm -
Nonstop1h 36m
Sat 9/1911:43 am -
Nonstop1h 39m
Deal found 8/10![Alaska Airlines logo]()
$207
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/163:40 pm -
1 stop6h 35m
Wed 9/234:10 pm -
1 stop5h 20m
Deal found 8/8![Southwest logo]()
$227
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:35 pm -
1 stop8h 40m
Sun 9/278:30 am -
1 stop8h 19m
Deal found 8/11![United Airlines logo]()
$327
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 10/139:15 am -
Nonstop1h 30m
Tue 10/209:45 pm -
Nonstop1h 21m
Deal found 8/8![Delta logo]()
$189
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 10/179:15 am -
Nonstop1h 30m
Wed 10/219:45 pm -
Nonstop1h 21m
Deal found 8/8![Delta logo]()
$189
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.
Fri 10/301:45 pm -
2 stops21h 06m
Sun 11/298:31 pm -
1 stop14h 29m
Deal found 8/11![Multiple Airlines logo]()
$443
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.
Fri 10/99:15 am -
Nonstop1h 30m
Sat 10/109:45 pm -
Nonstop1h 21m
Deal found 8/8![Delta logo]()
$189
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 9/165:52 am -
Nonstop1h 17m
Sat 9/1912:31 pm -
Nonstop1h 14m
Deal found 8/10![Alaska Airlines logo]()
$237
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 9/114:55 pm -
1 stop8h 50m
Mon 9/217:00 am -
1 stop6h 15m
Deal found 8/10![Southwest logo]()
$247
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:20 am -
2 stops13h 40m
Thu 11/195:15 am -
1 stop6h 10m
Deal found 8/7![Southwest logo]()
$248
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.
Wed 9/166:45 am -
Nonstop1h 50m
Wed 9/232:45 pm -
Nonstop1h 34m
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.
Fri 10/3011:48 am -
Nonstop1h 56m
Mon 11/28:15 am -
Nonstop1h 36m
Deal found 8/10![Alaska Airlines logo]()
$257
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 10/68:25 am -
Nonstop1h 50m
Sat 10/177:35 pm -
Nonstop1h 33m
Deal found 8/8![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.
Wed 9/910:55 am -
1 stop9h 25m
Tue 9/155:55 am -
1 stop7h 10m
Deal found 8/10![Southwest logo]()
$269
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 9/96:45 am -
Nonstop1h 50m
Wed 9/164:04 pm -
Nonstop1h 36m
Deal found 8/10![Delta logo]()
$207
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 10/235:07 am -
1 stop3h 18m
Mon 11/23:38 pm -
1 stop5h 15m
Deal found 8/7![Alaska Airlines logo]()
$277
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.
Wed 10/211:40 pm -
1 stop8h 35m
Sun 10/255:05 am -
1 stop7h 20m
Deal found 8/8![United Airlines logo]()
$377
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1210:34 am -
Nonstop1h 52m
Sun 9/137:15 am -
Nonstop1h 39m
Deal found 8/7![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.
Wed 9/1612:17 pm -
Nonstop1h 17m
Thu 10/16:51 pm -
1 stop4h 20m
Deal found 8/7![Alaska Airlines logo]()
$292
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.
Thu 10/223:36 pm -
Nonstop1h 48m
Sun 10/252:45 pm -
Nonstop1h 29m
Deal found 8/6![Delta logo]()
$227
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:19 am -
1 stop14h 14m
Mon 10/512:24 am -
1 stop11h 35m
Deal found 8/8![Alaska Airlines logo]()
$305
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 11/275:55 pm -
Nonstop1h 47m
Thu 12/39:00 am -
Nonstop1h 33m
Deal found 8/10![Delta logo]()
$227
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.
Fri 11/132:25 pm -
2 stops9h 53m
Sun 11/155:05 am -
1 stop7h 20m
Deal found 8/7![United Airlines logo]()
$444
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.
Thu 9/177:24 pm -
1 stop3h 15m
Sat 9/196:45 pm -
Nonstop1h 08m
Deal found 8/6![Alaska Airlines logo]()
$307
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 12/124:46 pm -
Nonstop1h 17m
Sat 1/91:42 pm -
1 stop3h 30m
Deal found 8/7![Alaska Airlines logo]()
$307
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 9/227:30 pm -
Nonstop1h 29m
Sun 9/279:15 am -
Nonstop1h 15m
Deal found 8/10![Delta logo]()
$247
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 8/228:05 am -
1 stop8h 24m
Tue 8/257:11 am -
1 stop8h 28m
Deal found 8/6![United Airlines logo]()
$491
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:58 pm -
Nonstop2h 06m
Wed 12/212:48 pm -
Nonstop1h 41m
Deal found 8/6![Alaska Airlines logo]()
$317
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:30 pm -
Nonstop1h 29m
Sat 9/193:55 pm -
Nonstop1h 14m
Deal found 8/7![Delta logo]()
$247
Last-minute flights from Idaho to SeattleDiscover last-minute flight deals from Idaho to Seattle. Data last updated August 11, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Seattle. Data last updated August 11, 2026 and is based on user searches.
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.
Sat 8/296:23 am -
Nonstop1h 39m
Sat 8/2910:18 am -
1 stop9h 02m
Deal found 8/6![Alaska Airlines logo]()
$201
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 8/295:52 am -
Nonstop1h 17m
Sat 8/2910:18 am -
1 stop12h 31m
Deal found 8/7![Alaska Airlines logo]()
$215
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.
Tue 9/11:24 pm -
1 stop20h 55m
Sat 9/57:06 pm -
1 stop15h 23m
Deal found 8/11![Frontier logo]()
$176
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.
Tue 9/11:24 pm -
1 stop20h 55m
Wed 9/27:06 pm -
1 stop15h 23m
Deal found 8/11![Frontier logo]()
$194
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.
Fri 9/49:23 am -
Nonstop1h 30m
Tue 9/89:45 pm -
Nonstop1h 23m
Deal found 8/9![Delta logo]()
$219
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 9/91:30 pm -
1 stop22h 19m
Thu 9/101:03 pm -
Nonstop1h 27m
Deal found 8/10![Alaska Airlines logo]()
$182
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.
Thu 9/109:16 am -
Nonstop1h 29m
Sun 9/139:45 pm -
Nonstop1h 23m
Deal found 8/10![Delta logo]()
$189
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.
Sat 9/121:36 pm -
Nonstop1h 14m
Sat 9/124:59 pm -
1 stop6h 54m
Deal found 8/10![Alaska Airlines logo]()
$181
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.
Sat 9/124:20 pm -
Nonstop1h 36m
Sat 9/197:15 am -
Nonstop1h 41m
Deal found 8/11![Alaska Airlines logo]()
$207
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/122:16 pm -
Nonstop1h 36m
Sun 9/137:15 am -
Nonstop1h 41m
Deal found 8/7![Alaska Airlines logo]()
$215
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 9/184:20 pm -
Nonstop1h 36m
Fri 9/188:49 pm -
1 stop22h 31m
Deal found 8/11![Alaska Airlines logo]()
$205
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 9/245:52 pm -
Nonstop1h 41m
Thu 9/248:49 pm -
1 stop22h 31m
Deal found 8/7![Alaska Airlines logo]()
$217
One-way flights from Idaho to SeattleSearch for one-way flight options from Idaho to Seattle. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
Search for one-way flight options from Idaho to Seattle. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
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.
Mon 11/93:52 pm -
1 stop20h 39m
Deal found 8/10![Frontier logo]()
$85
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.
Mon 10/123:52 pm -
1 stop19h 08m
Deal found 8/11![Frontier logo]()
$98
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 9/202:50 pm -
1 stop19h 52m
Deal found 8/11![Frontier logo]()
$103
This Super.com 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:24 pm -
1 stop20h 55m
Deal found 8/6![Frontier logo]()
$104
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.
Sun 11/83:52 pm -
1 stop26h 53m
Deal found 8/10![Frontier logo]()
$105
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.
Fri 10/93:52 pm -
1 stop19h 08m
Deal found 8/11![Frontier logo]()
$106
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.
Tue 9/81:24 pm -
1 stop26h 44m
Deal found 8/9![Frontier logo]()
$109
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:55 pm -
1 stop7h 10m
Deal found 8/7![Southwest logo]()
$114
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.
Mon 11/95:26 pm -
2 stops40h 25m
Deal found 8/11![Multiple Airlines logo]()
$120
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:49 pm -
1 stop6h 02m
Deal found 8/8![Alaska Airlines logo]()
$122
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 11/87:28 pm -
1 stop22h 17m
Deal found 8/11![Multiple Airlines logo]()
$123
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:30 pm -
2 stops23h 06m
Deal found 8/7![Multiple Airlines logo]()
$128
Find flight deals from Idaho to Seattle
Keep the following information in mind while searching for Idaho to Seattle flight deals. Data was last updated August 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $176 (Kiwi.com) |
One-way from | $85 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $278 |
Good round-trip deal | $303 or less |
Good one-way deal | $196 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho to Seattle 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 Idaho to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LewistonSeattle
LWS Lewiston Nez Perce Rgnl - SEA Seattle/Tacoma Intl
LWSSEA
Lewiston Nez Perce Rgnl
Sat 9/19
9:16 am-10:45 am
Nonstop1h 29m
Seattle/Tacoma Intl
Sat 9/26
9:45 pm-11:08 pm
Nonstop1h 23m
$189
LewistonSeattle
LWS Lewiston Nez Perce Rgnl - SEA Seattle/Tacoma Intl
LWSSEA
Lewiston Nez Perce Rgnl
Tue 10/13
9:15 am-10:45 am
Nonstop1h 30m
Seattle/Tacoma Intl
Tue 10/20
9:45 pm-11:06 pm
Nonstop1h 21m
$189
LewistonSeattle
LWS Lewiston Nez Perce Rgnl - SEA Seattle/Tacoma Intl
LWSSEA
Lewiston Nez Perce Rgnl
Sat 10/17
9:15 am-10:45 am
Nonstop1h 30m
Seattle/Tacoma Intl
Wed 10/21
9:45 pm-11:06 pm
Nonstop1h 21m
$189
LewistonSeattle
LWS Lewiston Nez Perce Rgnl - SEA Seattle/Tacoma Intl
LWSSEA
Lewiston Nez Perce Rgnl
Fri 10/9
9:15 am-10:45 am
Nonstop1h 30m
Seattle/Tacoma Intl
Sat 10/10
9:45 pm-11:06 pm
Nonstop1h 21m
$189
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Wed 9/16
4:20 pm-4:56 pm
Nonstop1h 36m
Seattle/Tacoma Intl
Sat 9/19
11:43 am-2:22 pm
Nonstop1h 39m
$207
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Wed 9/16
6:45 am-7:35 am
Nonstop1h 50m
Seattle/Tacoma Intl
Wed 9/23
2:45 pm-5:19 pm
Nonstop1h 34m
$207
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Tue 10/6
8:25 am-9:15 am
Nonstop1h 50m
Seattle/Tacoma Intl
Sat 10/17
7:35 pm-10:08 pm
Nonstop1h 33m
$207
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Wed 9/9
6:45 am-7:35 am
Nonstop1h 50m
Seattle/Tacoma Intl
Wed 9/16
4:04 pm-6:40 pm
Nonstop1h 36m
$207
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Sat 9/12
10:34 am-11:26 am
Nonstop1h 52m
Seattle/Tacoma Intl
Sun 9/13
7:15 am-9:54 am
Nonstop1h 39m
$217
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Wed 9/16
3:40 pm-9:15 pm
1 stop6h 35m
Seattle/Tacoma Intl
Wed 9/23
4:10 pm-10:30 pm
1 stop5h 20m
$227
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Idaho to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Idaho with our price prediction graph.
LWS-SEA
BOI-SEA
JAC-SEA
TWF-SEA
GEG-SEA
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 Idaho to Seattle
USID-SEA
LWS-SEA
BOI-SEA
JAC-SEA
TWF-SEA
What is the cheapest month to book a flight from Idaho to Seattle?
Currently, April is the cheapest month in which you can book a flight from Idaho to Seattle (average of $165). Flying from Idaho to Seattle in July is currently the most expensive (average of $363). 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 ID to SEA?
Find hourly flight availability from Idaho to Seattle. 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 Idaho to Seattle at noon. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight in the evening.
Weekly flight availability from Idaho to Seattle
Explore weekly flight availability from Idaho to Seattle. 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 USID to SEA are scheduled on a Monday (47 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 on average).
How much does it cost to fly round-trip from Idaho to Seattle?
Airfare is below average for this route at the moment.
Idaho to Seattle flights typically cost between $197 and $349 in September.The cheapest round-trip price found within the last 5 days was $176 on Frontier (Sep 1-Sep 5).
How far ahead should I book a flight from Idaho to Seattle?
Booking 57 days in advance of your planned departure date is, on average, the best time to get cheap flights from Idaho to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from Idaho to Seattle?
Use this chart to determine the cheapest time to fly round-trip from Idaho to Seattle. Price data was last updated on August 8, 2026.
Travelers seeking maximum savings on their Idaho to Seattle flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday mornings 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 Idaho to Seattle. 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 Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Edmonds
Snoqualmie
Lynnwood
Tumwater
Centralia
Puyallup
Marysville
Kent
Ellensburg
Fife
Ocean Shores
Lakewood
Poulsbo
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Idaho to Seattle
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Complete your trip
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Search flights from Idaho to Seattle by cabin class
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Idaho and Seattle flights
Browse other Idaho and Seattle flight options. Last updated on August 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 11, 2026.
Idaho to Seattle flights
Consider these flights traveling from Idaho to Seattle.
Top 3 airlines flying from Idaho to Seattle
Discover the top 3 airlines that operate flights from Idaho to Seattle. 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$97 | Average$177 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$97 | Average$365 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$99 | Average$328 | FlexibilityNo cancel fee | On-time75% |