$81+ Cheap flights from Seattle (SEA) 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
Sep 14 — Sep 211
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Idaho with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Seattle to IdahoExplore the most affordable flight options available from Seattle to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 15, 2026.
Explore the most affordable flight options available from Seattle to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/304:27 pm -
2 stops20h 28m
Thu 10/293:52 pm -
1 stop26h 53m
Deal found 8/12![Frontier logo]()
$169
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 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.
Wed 9/99:45 pm -
1 stop15h 10m
Mon 9/142:50 pm -
1 stop19h 52m
Deal found 8/11![Frontier logo]()
$181
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 SmartFares deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:15 am -
Nonstop1h 41m
Sat 10/36:04 pm -
Nonstop1h 43m
Deal found 8/12![Alaska Airlines logo]()
$191
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.
Fri 10/309:45 pm -
Nonstop1h 21m
Wed 11/412:19 pm -
1 stop6h 43m
Deal found 8/11![Delta logo]()
$198
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 Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/224:04 pm -
Nonstop1h 36m
Tue 9/296:45 am -
Nonstop1h 50m
Deal found 8/14![Delta logo]()
$207
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 9/1010:53 am -
2 stops26h 02m
Mon 9/142:50 pm -
1 stop19h 52m
Deal found 8/11![Frontier logo]()
$209
This SmartFares deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/269:17 pm -
Nonstop1h 08m
Sat 10/34:41 pm -
Nonstop1h 14m
Deal found 8/12![Alaska Airlines logo]()
$210
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:54 pm -
Nonstop1h 30m
Sun 9/135:52 pm -
Nonstop1h 41m
Deal found 8/13![Alaska Airlines logo]()
$213
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 10/38:30 am -
Nonstop1h 36m
Tue 10/611:48 am -
Nonstop1h 56m
Deal found 8/11![Alaska Airlines logo]()
$217
Best flights from Seattle to IdahoDiscover carefully curated flight deals from Seattle to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 15, 2026.
Discover carefully curated flight deals from Seattle to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 15, 2026.
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.
Wed 9/309:55 am -
Nonstop1h 40m
Sat 10/312:58 pm -
Nonstop1h 34m
Deal found 8/11![Alaska Airlines logo]()
$207
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 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 9/55:00 am -
1 stop7h 00m
Sat 9/121:50 pm -
1 stop6h 50m
Deal found 8/10![Southwest logo]()
$228
This Alaska Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:15 am -
Nonstop1h 41m
Sun 9/2010:00 am -
Nonstop1h 37m
Deal found 8/15![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:45 pm -
Nonstop1h 34m
Wed 9/233:28 pm -
Nonstop1h 42m
Deal found 8/14![Delta logo]()
$217
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:45 pm -
Nonstop1h 23m
Mon 9/149:16 am -
Nonstop1h 29m
Deal found 8/13![Delta logo]()
$219
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:55 am -
1 stop5h 25m
Sun 11/15:35 pm -
1 stop8h 20m
Deal found 8/13![Southwest logo]()
$247
This Alaska Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:18 pm -
Nonstop1h 26m
Sun 9/204:20 pm -
Nonstop1h 36m
Deal found 8/13![Alaska Airlines logo]()
$227
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/32:34 pm -
1 stop5h 06m
Thu 9/107:00 am -
1 stop7h 22m
Deal found 8/14![United Airlines logo]()
$503
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 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.
Wed 9/168:42 am -
Nonstop1h 15m
Sat 9/193:34 pm -
Nonstop1h 12m
Deal found 8/11![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.
Tue 9/221:45 pm -
1 stop9h 15m
Tue 9/293:50 pm -
1 stop5h 55m
Deal found 8/10![Southwest logo]()
$263
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:59 am -
Nonstop1h 28m
Sun 10/187:13 pm -
Nonstop1h 57m
Deal found 8/14![Delta logo]()
$227
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:59 pm -
Nonstop1h 35m
Sun 9/205:59 pm -
Nonstop1h 42m
Deal found 8/12![Delta logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2112:48 pm -
Nonstop1h 35m
Sat 10/241:02 pm -
1 stop5h 53m
Deal found 8/13![Alaska Airlines logo]()
$252
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.
Tue 9/221:53 pm -
Nonstop1h 21m
Tue 9/2911:10 am -
Nonstop1h 25m
Deal found 8/11![Delta logo]()
$237
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.
Tue 9/224:59 pm -
1 stop6h 54m
Tue 9/2912:17 pm -
Nonstop1h 17m
Deal found 8/11![Alaska Airlines logo]()
$270
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:00 am -
Nonstop1h 20m
Sun 9/205:10 am -
Nonstop1h 17m
Deal found 8/14![Delta logo]()
$247
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 10/2411:32 am -
Nonstop1h 22m
Mon 10/267:19 am -
1 stop16h 18m
Deal found 8/11![Alaska Airlines logo]()
$275
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/29:45 pm -
Nonstop1h 23m
Sun 10/49:16 am -
Nonstop1h 29m
Deal found 8/12![Delta logo]()
$249
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.
Sun 9/65:00 am -
1 stop7h 20m
Fri 9/186:00 pm -
2 stops21h 24m
Deal found 8/11![United Airlines logo]()
$513
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.
Tue 10/208:10 pm -
Nonstop1h 49m
Sat 10/241:58 pm -
Nonstop2h 06m
Deal found 8/11![Alaska Airlines logo]()
$297
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 9/29:35 pm -
Nonstop1h 24m
Tue 9/89:16 am -
Nonstop1h 29m
Deal found 8/10![Delta logo]()
$249
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:11 am -
1 stop8h 28m
Sat 9/58:00 am -
2 stops14h 31m
Deal found 8/13![United Airlines logo]()
$521
This Alaska Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:05 am -
Nonstop2h 17m
Wed 9/2312:02 pm -
Nonstop2h 17m
Deal found 8/12![Alaska Airlines logo]()
$307
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:45 am -
1 stop5h 33m
Mon 9/141:00 pm -
1 stop6h 36m
Deal found 8/12![Delta logo]()
$257
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.
Sat 10/3112:45 pm -
1 stop7h 12m
Tue 11/32:25 pm -
3 stops29h 08m
Deal found 8/11![United Airlines logo]()
$538
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:30 pm -
Nonstop1h 20m
Sun 10/411:10 am -
Nonstop1h 25m
Deal found 8/12![Delta logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:40 am -
1 stop3h 41m
Sun 10/256:09 am -
Nonstop2h 11m
Deal found 8/14![Alaska Airlines logo]()
$327
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:15 am -
Nonstop1h 22m
Sun 10/47:05 am -
Nonstop1h 25m
Deal found 8/13![Delta logo]()
$257
Last-minute flights from Seattle to IdahoDiscover last-minute flight deals from Seattle to Idaho. Data last updated August 15, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Idaho. Data last updated August 15, 2026 and is based on user searches.
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 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.
Wed 9/99:45 pm -
1 stop15h 10m
Mon 9/142:50 pm -
1 stop19h 52m
Deal found 8/11![Frontier logo]()
$181
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 9/1010:53 am -
2 stops26h 02m
Mon 9/142:50 pm -
1 stop19h 52m
Deal found 8/11![Frontier logo]()
$209
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 Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:54 pm -
Nonstop1h 30m
Sun 9/135:52 pm -
Nonstop1h 41m
Deal found 8/13![Alaska Airlines logo]()
$213
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 9/198:59 am -
Nonstop1h 38m
Sun 9/208:55 am -
Nonstop1h 55m
Deal found 8/11![Delta logo]()
$217
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/224:04 pm -
Nonstop1h 36m
Tue 9/296:45 am -
Nonstop1h 50m
Deal found 8/14![Delta logo]()
$207
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.
Tue 9/2212:31 pm -
Nonstop1h 14m
Tue 9/297:03 am -
Nonstop1h 17m
Deal found 8/10![Alaska Airlines logo]()
$217
This SmartFares deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:15 am -
Nonstop1h 41m
Sat 10/36:04 pm -
Nonstop1h 43m
Deal found 8/12![Alaska Airlines logo]()
$191
This SmartFares deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/269:17 pm -
Nonstop1h 08m
Sat 10/34:41 pm -
Nonstop1h 14m
Deal found 8/12![Alaska Airlines logo]()
$210
This Alaska Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:00 am -
Nonstop1h 46m
Tue 9/2910:28 am -
Nonstop1h 58m
Deal found 8/13![Alaska Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/304:27 pm -
2 stops20h 28m
Thu 10/293:52 pm -
1 stop26h 53m
Deal found 8/12![Frontier logo]()
$169
One-way flights from Seattle to IdahoSearch for one-way flight options from Seattle to Idaho. Find affordable one-way fares based on user searches. Data last updated August 15, 2026.
Search for one-way flight options from Seattle to Idaho. Find affordable one-way fares based on user searches. Data last updated August 15, 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.
Wed 9/239:45 pm -
1 stop15h 10m
Deal found 8/11![Frontier logo]()
$81
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.
Wed 10/289:16 pm -
1 stop16h 41m
Deal found 8/11![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:45 pm -
1 stop15h 10m
Deal found 8/14![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/119:16 pm -
1 stop16h 41m
Deal found 8/12![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/299:16 pm -
1 stop16h 41m
Deal found 8/12![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/94:27 pm -
2 stops20h 28m
Deal found 8/12![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.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 8/14![Frontier logo]()
$92
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.
Wed 9/99:45 pm -
1 stop11h 34m
Deal found 8/11![Multiple Airlines logo]()
$115
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.
Wed 9/169:45 pm -
1 stop11h 34m
Deal found 8/11![Multiple Airlines logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/154:27 pm -
2 stops40h 52m
Deal found 8/13![Multiple Airlines logo]()
$120
This KAYAK deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:20 am -
1 stop4h 26m
Deal found 8/13![Alaska Airlines logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/129:45 pm -
1 stop11h 34m
Deal found 8/13![Multiple Airlines logo]()
$126
Find flight deals from Seattle to Idaho
Keep the following information in mind while searching for Seattle to Idaho flight deals. Data was last updated August 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $169 (Kiwi.com) |
One-way from | $81 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $242 |
Good round-trip deal | $177 or less |
Good one-way deal | $188 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle 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 15, 2026.
Use the filters below to find and compare flights from Seattle to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Wed 9/30
9:55 am-12:35 pm
Nonstop1h 40m
Boise Air Term. Gowen Fld
Sat 10/3
12:58 pm-1:32 pm
Nonstop1h 34m
$207
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
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Sat 9/19
7:15 am-9:56 am
Nonstop1h 41m
Boise Air Term. Gowen Fld
Sun 9/20
10:00 am-10:37 am
Nonstop1h 37m
$217
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Thu 9/17
2:45 pm-5:19 pm
Nonstop1h 34m
Boise Air Term. Gowen Fld
Wed 9/23
3:28 pm-4:10 pm
Nonstop1h 42m
$217
SeattleLewiston
SEA Seattle/Tacoma Intl - LWS Lewiston Nez Perce Rgnl
SEALWS
Seattle/Tacoma Intl
Wed 9/9
9:45 pm-11:08 pm
Nonstop1h 23m
Lewiston Nez Perce Rgnl
Mon 9/14
9:16 am-10:45 am
Nonstop1h 29m
$219
SeattleLewiston
SEA Seattle/Tacoma Intl - LWS Lewiston Nez Perce Rgnl
SEALWS
Seattle/Tacoma Intl
Fri 9/4
9:35 pm-10:59 pm
Nonstop1h 24m
Lewiston Nez Perce Rgnl
Fri 9/11
9:16 am-10:45 am
Nonstop1h 29m
$219
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Fri 9/18
9:18 pm-11:44 pm
Nonstop1h 26m
Boise Air Term. Gowen Fld
Sun 9/20
4:20 pm-4:56 pm
Nonstop1h 36m
$227
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Fri 10/16
8:59 am-11:27 am
Nonstop1h 28m
Boise Air Term. Gowen Fld
Sun 10/18
7:13 pm-8:10 pm
Nonstop1h 57m
$227
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Fri 9/18
7:59 pm-10:34 pm
Nonstop1h 35m
Boise Air Term. Gowen Fld
Sun 9/20
5:59 pm-6:41 pm
Nonstop1h 42m
$227
SeattleBoise
SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld
SEABOI
Seattle/Tacoma Intl
Sat 9/5
5:00 am-1:00 pm
1 stop7h 00m
Boise Air Term. Gowen Fld
Sat 9/12
1:50 pm-7:40 pm
1 stop6h 50m
$228
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Seattle to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Seattle with our price prediction graph.
SEA-BOI
SEA-GEG
SEA-LWS
SEA-SUN
SEA-TWF
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 Seattle to Idaho
SEA-USID
SEA-BOI
SEA-GEG
SEA-LWS
SEA-SUN
What is the cheapest month to book a flight from Seattle to Idaho?
Currently, April is the cheapest month in which you can book a flight from Seattle to Idaho (average of $168). Flying from Seattle to Idaho in July is currently the most expensive (average of $367). 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 SEA to ID?
Find hourly flight availability from Seattle 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 15, 2026.
When flying from Seattle to Idaho, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 25% versus a flight in the afternoon.
Weekly flight availability from Seattle to Idaho
Explore weekly flight availability from Seattle 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 15, 2026.
The most flights from SEA to USID are scheduled on a Thursday (47 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (24 on average).
How much does it cost to fly round-trip from Seattle to Idaho?
Airfare is below average for this route at the moment.
Seattle to Idaho flights typically cost between $187 and $417 in September.The cheapest round-trip price found within the last 5 days was $169 on Frontier (Sep 30-Oct 29).
How far ahead should I book a flight from Seattle to Idaho?
The best time to book flights from Seattle to Idaho is 61 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Seattle to Idaho?
Use this chart to determine the cheapest time to fly round-trip from Seattle to Idaho. Price data was last updated on August 8, 2026.
Travelers seeking maximum savings on their Seattle to Idaho flight should consider departing on Tuesday evenings 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 15, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andHawaiian Airlines from Seattle to Idaho have to say. 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.
Food
7.0
Overall
7.9
Crew
8.5
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Overall
7.9
Crew
8.5
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Overall
7.9
Crew
8.5
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Food
7.0
Overall
7.9
Crew
8.5
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Related info for your journey
Find useful and relevant information for your journey from Seattle 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 Seattle to Idaho
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Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Idaho by cabin class
Find flights from Seattle to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Idaho flights
Browse other Seattle and Idaho flight options. Last updated on August 15, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Seattle to Idaho flights
Consider these flights traveling from Seattle to Idaho.
Top 3 airlines flying from Seattle to Idaho
Discover the top 3 airlines that operate flights from Seattle 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 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$79 | Average$360 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$107 | Average$312 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$157 | Average$317 | FlexibilityNo cancel fee | On-time85% |