$94+ Cheap flights from Idaho to Seattle (SEA)
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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SEA
Dec 11 — Dec 181
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Idaho to Seattle with Cheapflights
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Idaho to Seattle
Cheapest
Best
Last-minute
One-way
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 November 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 November 11, 2026.
This Delta deal was found by Cheapflights users on 11/10. 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 12/46:59 pm -
1 stop6h 06m
Mon 12/75:30 am -
1 stop5h 47m
Deal found 11/10![Delta logo]()
$187
This Delta deal was found by Cheapflights users on 11/8. 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 12/226:15 am -
Nonstop1h 59m
Wed 12/238:39 am -
Nonstop1h 34m
Deal found 11/8![Delta logo]()
$217
This Delta deal was found by Cheapflights users on 11/9. 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.
Wed 12/232:10 pm -
Nonstop1h 50m
Sun 1/310:46 am -
Nonstop1h 44m
Deal found 11/9![Delta logo]()
$227
This Travelocity deal was found by Cheapflights users on 11/7. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/245:35 am -
1 stop4h 49m
Sun 1/1011:53 am -
1 stop5h 59m
Deal found 11/7![Multiple Airlines logo]()
$228
This Alaska Airlines deal was found by Cheapflights users on 11/8. 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.
Wed 12/98:56 am -
1 stop5h 09m
Wed 12/93:50 pm -
1 stop3h 20m
Deal found 11/8![Alaska Airlines logo]()
$231
This Alaska Airlines deal was found by Cheapflights users on 11/7. 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 12/2510:03 am -
Nonstop1h 41m
Fri 12/251:03 pm -
Nonstop1h 24m
Deal found 11/7![Alaska Airlines logo]()
$232
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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 12/58:30 am -
1 stop6h 50m
Sat 12/55:40 pm -
Nonstop1h 25m
Deal found 11/10![Alaska Airlines logo]()
$233
This Delta deal was found by Cheapflights users on 11/10. 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 12/117:18 pm -
Nonstop1h 56m
Sun 12/137:15 am -
Nonstop1h 41m
Deal found 11/10![Delta logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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.
Tue 12/110:16 am -
1 stop8h 57m
Tue 12/19:30 pm -
Nonstop1h 29m
Deal found 11/10![Alaska Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 11/8. 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 12/237:00 am -
Nonstop1h 32m
Sun 12/279:40 pm -
Nonstop1h 19m
Deal found 11/8![Delta logo]()
$239
This Trip.com deal was found by Cheapflights users on 11/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/255:35 am -
1 stop3h 43m
Fri 1/17:59 pm -
1 stop3h 00m
Deal found 11/10![Alaska Airlines logo]()
$240
This Southwest deal was found by Cheapflights users on 11/8. 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.
Tue 12/812:40 pm -
1 stop8h 00m
Sat 12/126:20 am -
2 stops10h 50m
Deal found 11/8![Southwest logo]()
$242
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 November 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 November 11, 2026.
This Delta deal was found by Cheapflights users on 11/9. 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.
Thu 1/147:57 pm -
Nonstop1h 57m
Sun 1/177:15 am -
Nonstop1h 38m
Deal found 11/9![Delta logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 11/7. 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 3/52:00 pm -
Nonstop1h 33m
Sun 3/712:31 pm -
Nonstop1h 34m
Deal found 11/7![Alaska Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 11/9. 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.
Sat 12/121:45 pm -
1 stop7h 45m
Tue 12/155:15 am -
2 stops9h 35m
Deal found 11/9![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 11/6. 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.
Thu 12/38:15 am -
1 stop7h 08m
Sun 12/69:01 am -
1 stop4h 49m
Deal found 11/6![United Airlines logo]()
$312
This Delta deal was found by Cheapflights users on 11/8. 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.
Thu 12/247:00 am -
Nonstop1h 32m
Sun 12/279:40 pm -
Nonstop1h 19m
Deal found 11/8![Delta logo]()
$239
This Southwest deal was found by Cheapflights users on 11/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2011:40 am -
2 stops8h 10m
Wed 1/2712:45 pm -
2 stops8h 50m
Deal found 11/6![Southwest logo]()
$247
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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 1/911:38 am -
Nonstop1h 52m
Mon 1/114:43 pm -
Nonstop1h 34m
Deal found 11/6![Alaska Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 11/8. 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.
Thu 12/317:00 am -
Nonstop1h 32m
Fri 1/15:30 am -
1 stop6h 10m
Deal found 11/8![Delta logo]()
$248
This Southwest deal was found by Cheapflights users on 11/8. 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.
Fri 12/118:30 pm -
1 stop5h 50m
Mon 12/1411:35 am -
2 stops9h 05m
Deal found 11/8![Southwest logo]()
$262
This Alaska Airlines deal was found by Cheapflights users on 11/7. 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 2/186:48 pm -
Nonstop1h 49m
Sun 2/217:05 am -
Nonstop1h 33m
Deal found 11/7![Alaska Airlines logo]()
$267
This Delta deal was found by Cheapflights users on 11/9. 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.
Thu 1/213:23 pm -
1 stop4h 16m
Sat 1/2310:14 am -
Nonstop1h 53m
Deal found 11/9![Delta logo]()
$267
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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.
Thu 2/256:42 am -
Nonstop1h 43m
Mon 3/112:21 pm -
1 stop3h 26m
Deal found 11/10![Alaska Airlines logo]()
$292
This Southwest deal was found by Cheapflights users on 11/10. 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 1/1211:55 am -
1 stop6h 45m
Fri 1/156:30 am -
2 stops10h 50m
Deal found 11/10![Southwest logo]()
$312
This Delta deal was found by Cheapflights users on 11/7. 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 12/197:00 am -
Nonstop1h 32m
Mon 12/219:40 pm -
Nonstop1h 19m
Deal found 11/7![Delta logo]()
$308
This Alaska Airlines deal was found by Cheapflights users on 11/7. 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.
Sun 1/178:28 pm -
Nonstop1h 38m
Tue 1/192:28 pm -
1 stop4h 39m
Deal found 11/7![Alaska Airlines logo]()
$312
This Southwest deal was found by Cheapflights users on 11/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/711:40 am -
2 stops11h 00m
Sun 1/106:45 am -
1 stop8h 10m
Deal found 11/6![Southwest logo]()
$327
This Delta deal was found by Cheapflights users on 11/6. 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 12/35:56 pm -
Nonstop1h 48m
Sun 12/69:03 am -
Nonstop1h 37m
Deal found 11/6![Delta logo]()
$317
This Delta deal was found by Cheapflights users on 11/8. 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.
Sun 11/229:08 am -
Nonstop1h 39m
Tue 11/249:45 pm -
Nonstop1h 18m
Deal found 11/8![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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 12/186:00 am -
Nonstop2h 20m
Mon 12/218:56 pm -
Nonstop1h 49m
Deal found 11/6![Alaska Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 11/10. 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 11/259:08 am -
Nonstop1h 39m
Fri 11/279:45 pm -
Nonstop1h 18m
Deal found 11/10![Delta logo]()
$339
This Expedia deal was found by Cheapflights users on 11/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/187:59 pm -
Nonstop1h 54m
Sat 12/194:39 pm -
Nonstop1h 38m
Deal found 11/8![Alaska Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 11/8. 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 11/219:08 am -
Nonstop1h 39m
Tue 11/249:45 pm -
Nonstop1h 18m
Deal found 11/8![Delta logo]()
$339
This Delta deal was found by Cheapflights users on 11/9. 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.
Tue 11/249:08 am -
Nonstop1h 39m
Sat 11/289:45 pm -
Nonstop1h 18m
Deal found 11/9![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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.
Tue 12/13:44 pm -
1 stop3h 50m
Wed 12/97:38 am -
1 stop4h 39m
Deal found 11/6![Alaska Airlines logo]()
$422
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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 12/31:54 pm -
Nonstop2h 16m
Tue 12/87:38 am -
1 stop4h 39m
Deal found 11/6![Alaska Airlines logo]()
$432
This Delta deal was found by Cheapflights users on 11/9. 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.
Sat 2/201:42 pm -
Nonstop2h 03m
Mon 2/225:45 am -
1 stop5h 19m
Deal found 11/9![Delta logo]()
$392
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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.
Mon 12/281:52 pm -
Nonstop2h 10m
Thu 12/317:26 am -
1 stop4h 49m
Deal found 11/10![Alaska Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 11/6. 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.
Fri 12/46:59 pm -
1 stop6h 06m
Tue 12/87:15 am -
2 stops13h 52m
Deal found 11/6![Delta logo]()
$402
This Expedia deal was found by Cheapflights users on 11/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:51 am -
Nonstop1h 59m
Sat 12/58:35 am -
Nonstop1h 34m
Deal found 11/10![Alaska Airlines logo]()
$457
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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 3/2010:20 am -
Nonstop1h 49m
Sun 3/287:05 am -
Nonstop1h 33m
Deal found 11/10![Alaska Airlines logo]()
$457
Last-minute flights from Idaho to SeattleDiscover last-minute flight deals from Idaho to Seattle. Data last updated November 11, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to Seattle. Data last updated November 11, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 11/7. 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 11/249:08 am -
Nonstop1h 39m
Sat 11/289:45 pm -
Nonstop1h 18m
Deal found 11/7![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 11/6. 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.
Wed 11/259:08 am -
Nonstop1h 39m
Sun 11/299:45 pm -
Nonstop1h 18m
Deal found 11/6![Delta logo]()
$329
This Delta deal was found by Cheapflights users on 11/10. 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 12/46:59 pm -
1 stop6h 06m
Mon 12/75:30 am -
1 stop5h 47m
Deal found 11/10![Delta logo]()
$187
This Delta deal was found by Cheapflights users on 11/6. 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.
Fri 12/46:59 pm -
1 stop6h 06m
Sat 12/55:30 am -
1 stop15h 55m
Deal found 11/6![Delta logo]()
$331
This Delta deal was found by Cheapflights users on 11/8. 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.
Sun 12/69:08 am -
Nonstop1h 31m
Sun 12/135:30 am -
1 stop6h 09m
Deal found 11/8![Delta logo]()
$278
This Alaska Airlines deal was found by Cheapflights users on 11/8. 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.
Tue 12/811:51 am -
Nonstop1h 59m
Tue 12/158:35 am -
Nonstop1h 34m
Deal found 11/8![Alaska Airlines logo]()
$247
This Expedia deal was found by Cheapflights users on 11/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/123:44 pm -
1 stop3h 50m
Sat 12/198:56 pm -
Nonstop1h 49m
Deal found 11/7![Alaska Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 11/7. 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 12/197:00 am -
Nonstop1h 32m
Mon 12/219:40 pm -
Nonstop1h 19m
Deal found 11/7![Delta logo]()
$308
This Delta deal was found by Cheapflights users on 11/8. 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 12/237:00 am -
Nonstop1h 32m
Sun 12/279:40 pm -
Nonstop1h 19m
Deal found 11/8![Delta logo]()
$239
This Alaska Airlines deal was found by Cheapflights users on 11/11. 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 12/266:00 am -
Nonstop2h 20m
Tue 12/298:56 pm -
Nonstop1h 49m
Deal found 11/11![Alaska Airlines logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 11/11. 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 12/266:00 am -
Nonstop2h 20m
Mon 12/288:56 pm -
Nonstop1h 49m
Deal found 11/11![Alaska Airlines logo]()
$327
This Delta deal was found by Cheapflights users on 11/8. 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.
Thu 12/317:00 am -
Nonstop1h 32m
Fri 1/15:30 am -
1 stop6h 10m
Deal found 11/8![Delta logo]()
$248
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 November 11, 2026.
Search for one-way flight options from Idaho to Seattle. Find affordable one-way fares based on user searches. Data last updated November 11, 2026.
This Delta deal was found by Cheapflights users on 11/8. 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 12/155:35 am -
1 stop4h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Delta logo]()
$94
This Cheapflightsfares deal was found by Cheapflights users on 11/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/215:33 pm -
1 stop24h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Frontier logo]()
$103
This Southwest deal was found by Cheapflights users on 11/9. 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 12/153:30 pm -
1 stop8h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Southwest logo]()
$119
This Travelocity deal was found by Cheapflights users on 11/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/37:00 am -
1 stop5h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Alaska Airlines logo]()
$129
This Alaska Airlines deal was found by Cheapflights users on 11/7. 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.
Tue 12/154:10 pm -
Nonstop1h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Alaska Airlines logo]()
$139
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 12/241:12 pm -
Nonstop1h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Alaska Airlines logo]()
$149
This Delta deal was found by Cheapflights users on 11/10. 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 12/221:40 pm -
Nonstop2h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Delta logo]()
$154
This Priceline deal was found by Cheapflights users on 11/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/910:16 am -
1 stop5h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Alaska Airlines logo]()
$158
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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.
Tue 12/110:16 am -
1 stop26h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Alaska Airlines logo]()
$163
This Alaska Airlines deal was found by Cheapflights users on 11/7. 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 12/93:44 pm -
1 stop5h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Alaska Airlines logo]()
$164
This Delta deal was found by Cheapflights users on 11/10. 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.
Mon 12/281:40 pm -
Nonstop2h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Delta logo]()
$164
This United Airlines deal was found by Cheapflights users on 11/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/152:48 pm -
2 stops9h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![United Airlines logo]()
$169
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 November 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $187 (Delta) |
One-way from | $94 (Delta) |
Popular in | June |
Cheapest in | January |
Average price | $310 |
Good round-trip deal | $342 or less |
Good one-way deal | $183 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 7,457,451 searches. Data last updated November 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
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Tue 12/15
4:10 pm-4:54 pm
Nonstop1h 44m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$139
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Sat 1/2
8:51 am-10:01 am
Nonstop2h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$139
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Sun 1/3
8:51 am-10:01 am
Nonstop2h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Thu 12/24
11:53 am-12:50 pm
Nonstop1h 57m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Fri 12/11
7:18 pm-8:14 pm
Nonstop1h 56m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
HaileySeattle
SUN Hailey Sun Valley-Friedman - SEA Seattle/Tacoma Intl
SUNSEA
Hailey Sun Valley-Friedman
Fri 1/22
7:59 pm-8:50 pm
Nonstop1h 51m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$164
HaileySeattle
SUN Hailey Sun Valley-Friedman - SEA Seattle/Tacoma Intl
SUNSEA
Hailey Sun Valley-Friedman
Mon 12/28
1:40 pm-2:46 pm
Nonstop2h 06m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$164
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Tue 12/15
2:48 pm-11:44 pm
2 stops9h 56m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$169
Idaho FallsSeattle
IDA Idaho Falls Fanning Field - SEA Seattle/Tacoma Intl
IDASEA
Idaho Falls Fanning Field
Wed 12/9
1:54 pm-3:10 pm
Nonstop2h 16m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$184
BoiseSeattle
BOI Boise Air Term. Gowen Fld - SEA Seattle/Tacoma Intl
BOISEA
Boise Air Term. Gowen Fld
Thu 12/10
5:47 am-11:57 am
2 stops7h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$197
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.
BOI-SEA
LWS-SEA
SUN-SEA
IDA-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
BOI-SEA
LWS-SEA
SUN-SEA
IDA-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 $166). Flying from Idaho to Seattle in July is currently the most expensive (average of $362). 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 November 11, 2026.
It’s optimal to fly from Idaho to Seattle at noon. By choosing this option you can save up to 19% 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 November 11, 2026.
The most flights from USID to SEA are scheduled on a Monday (38 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 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 $243 and $402 in December.The cheapest round-trip price found within the last 5 days was $217 on Alaska Airlines (Dec 22-Dec 29).
How far ahead should I book a flight from Idaho to Seattle?
Booking 39 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 November 7, 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. Tuesday afternoons 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
Lacey
Leavenworth
Tacoma
Tukwila
Snoqualmie
Puyallup
Lynnwood
Kent
Tumwater
Ocean Shores
Ellensburg
Issaquah
Olympia
Centralia
Lakewood
Poulsbo
Marysville
Shoreline
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Seattle flight routes
Top destinations
Alternative routes for Idaho to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho to Seattle by cabin class
Find flights from Idaho to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and Seattle flights
Browse other Idaho and Seattle flight options. Last updated on November 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 November 11, 2026.
Idaho to Seattle flights
Consider these flights traveling from Idaho to Seattle.
Top 2 airlines flying from Idaho to Seattle
Discover the top 2 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 7,457,451 searches. Data last updated November 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$344 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$99 | Average$313 | FlexibilityNo cancel fee | On-time75% |