$94+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BOI
Jul 25 — Aug 11
Round-trip
1 adult, Economy
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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 June 25, 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 June 25, 2026.
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:15 am
SEA
- BOI
Nonstop1h 39m
Delta
Sun 9/275:59 pm
BOI
- SEA
Nonstop1h 42m
Delta
Deal found 6/23![Delta logo]()
$182
This Expedia deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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.
Wed 8/1910:00 am
SEA
- BOI
Nonstop1h 36m
Alaska Airlines
Sun 8/237:48 pm
BOI
- SEA
Nonstop1h 34m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$186
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/191:45 pm
SEA
- BOI
1 stop8h 35m
Southwest
Sat 8/221:50 pm
BOI
- SEA
1 stop6h 45m
Southwest
Deal found 6/23![Southwest logo]()
$187
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 10/14:03 pm
SEA
- BOI
Nonstop1h 36m
Delta
Mon 10/58:55 am
BOI
- SEA
Nonstop1h 55m
Delta
Deal found 6/23![Delta logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 10/1010:17 am
SEA
- GEG
Nonstop1h 22m
Alaska Airlines
Tue 10/137:43 pm
GEG
- SEA
Nonstop1h 17m
Alaska Airlines
Deal found 6/22![Alaska Airlines logo]()
$197
This United Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:00 am
SEA
- BOI
1 stop7h 31m
United Airlines
Mon 9/147:05 pm
BOI
- SEA
1 stop5h 21m
United Airlines
Deal found 6/25![United Airlines logo]()
$202
This Priceline deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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.
Fri 9/47:53 pm
SEA
- GEG
Nonstop1h 08m
Alaska Airlines
Sat 9/58:31 am
GEG
- SEA
Nonstop1h 17m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$207
This Alaska Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 10/218:35 am
SEA
- SUN
Nonstop1h 36m
Alaska Airlines
Sat 10/2411:53 am
SUN
- SEA
Nonstop1h 56m
Alaska Airlines
Deal found 6/22![Alaska Airlines logo]()
$217
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/283:25 pm
SEA
- BOI
1 stop6h 25m
Southwest
Mon 8/316:30 am
BOI
- SEA
1 stop6h 00m
Southwest
Deal found 6/23![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 8/277:15 am
SEA
- GEG
Nonstop1h 19m
Delta
Sun 8/301:00 pm
GEG
- SEA
Nonstop1h 27m
Delta
Deal found 6/25![Delta logo]()
$217
This CheapOair deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:38 pm
SEA
- GEG
Nonstop1h 09m
Alaska Airlines
Sun 8/307:03 am
GEG
- SEA
Nonstop1h 17m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$219
This Priceline deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/1911:50 am
SEA
- BOI
Nonstop1h 32m
Alaska Airlines
Sat 8/227:30 am
BOI
- SEA
1 stop3h 18m
Alaska Airlines
Deal found 6/23![Alaska Airlines logo]()
$222
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 June 25, 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 June 25, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:18 pm
SEA
- BOI
Nonstop1h 26m
Alaska Airlines
Mon 10/52:08 pm
BOI
- SEA
Nonstop1h 38m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$197
This Delta deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 10/29:00 am
SEA
- BOI
Nonstop1h 34m
Delta
Mon 10/57:19 pm
BOI
- SEA
Nonstop1h 55m
Delta
Deal found 6/22![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 8/282:35 pm
SEA
- BOI
2 stops8h 20m
Southwest
Mon 8/3110:25 am
BOI
- SEA
2 stops11h 50m
Southwest
Deal found 6/22![Southwest logo]()
$283
This Delta deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 10/169:25 pm
SEA
- BOI
Nonstop1h 27m
Delta
Sun 10/182:35 pm
BOI
- SEA
Nonstop1h 50m
Delta
Deal found 6/22![Delta logo]()
$217
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 10/14:03 pm
SEA
- BOI
Nonstop1h 36m
Delta
Mon 10/58:55 am
BOI
- SEA
Nonstop1h 55m
Delta
Deal found 6/21![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 8/67:20 am
SEA
- GEG
Nonstop1h 06m
Alaska Airlines
Sat 9/192:33 pm
GEG
- SEA
Nonstop1h 12m
Alaska Airlines
Deal found 6/21![Alaska Airlines logo]()
$242
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:00 am
SEA
- WYS
1 stop7h 20m
United Airlines
Sat 9/262:05 pm
WYS
- SEA
1 stop8h 10m
United Airlines
Deal found 6/23![United Airlines logo]()
$543
This Alaska Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 9/266:45 pm
SEA
- GEG
Nonstop1h 08m
Alaska Airlines
Tue 9/296:00 am
GEG
- SEA
1 stop6h 39m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$248
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 9/410:49 pm
SEA
- GEG
Nonstop1h 10m
Delta
Tue 9/89:23 am
GEG
- SEA
Nonstop1h 32m
Delta
Deal found 6/21![Delta logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 10/101:31 pm
SEA
- GEG
Nonstop1h 09m
Alaska Airlines
Tue 10/137:16 am
GEG
- SEA
1 stop16h 21m
Alaska Airlines
Deal found 6/23![Alaska Airlines logo]()
$248
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 8/275:56 pm
SEA
- GEG
Nonstop1h 18m
Delta
Mon 8/317:05 am
GEG
- SEA
Nonstop1h 24m
Delta
Deal found 6/20![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/232:25 pm
SEA
- BOI
1 stop9h 00m
Southwest
Sat 7/256:00 pm
BOI
- SEA
1 stop7h 40m
Southwest
Deal found 6/24![Southwest logo]()
$317
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 8/209:15 am
SEA
- GEG
Nonstop1h 14m
Delta
Sun 8/237:05 am
GEG
- SEA
Nonstop1h 24m
Delta
Deal found 6/20![Delta logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 9/86:05 pm
SEA
- BOI
Nonstop1h 30m
Alaska Airlines
Thu 9/107:48 pm
BOI
- SEA
Nonstop1h 34m
Alaska Airlines
Deal found 6/21![Alaska Airlines logo]()
$267
This Alaska Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 10/218:05 pm
SEA
- IDA
Nonstop1h 49m
Alaska Airlines
Sat 10/246:09 am
IDA
- SEA
Nonstop2h 11m
Alaska Airlines
Deal found 6/22![Alaska Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 8/177:58 pm
SEA
- GEG
Nonstop1h 18m
Delta
Mon 8/244:20 pm
GEG
- SEA
Nonstop1h 25m
Delta
Deal found 6/20![Delta logo]()
$252
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 7/203:40 pm
SEA
- GEG
Nonstop1h 15m
Delta
Mon 7/274:30 pm
GEG
- SEA
Nonstop1h 27m
Delta
Deal found 6/20![Delta logo]()
$267
This Alaska Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 8/612:55 pm
SEA
- BOI
Nonstop1h 31m
Alaska Airlines
Tue 8/118:00 pm
BOI
- SEA
1 stop15h 26m
Alaska Airlines
Deal found 6/21![Alaska Airlines logo]()
$310
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/75:56 pm
SEA
- GEG
Nonstop1h 18m
Delta
Fri 8/1411:09 am
GEG
- SEA
Nonstop1h 26m
Delta
Deal found 6/23![Delta logo]()
$267
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 11/176:36 am
SEA
- JAC
2 stops13h 26m
United Airlines
Wed 11/182:40 pm
JAC
- SEA
2 stops9h 36m
United Airlines
Deal found 6/23![United Airlines logo]()
$566
This Delta deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 7/169:35 am
SEA
- GEG
Nonstop1h 13m
Delta
Sun 7/195:37 pm
GEG
- SEA
Nonstop1h 24m
Delta
Deal found 6/22![Delta logo]()
$267
This Alaska Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 8/298:05 am
SEA
- JAC
Nonstop2h 10m
Alaska Airlines
Wed 9/211:55 am
JAC
- SEA
Nonstop2h 14m
Alaska Airlines
Deal found 6/20![Alaska Airlines logo]()
$331
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 8/76:00 am
SEA
- JAC
1 stop6h 48m
United Airlines
Mon 8/104:23 pm
JAC
- SEA
1 stop7h 47m
United Airlines
Deal found 6/21![United Airlines logo]()
$586
This Alaska Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 9/198:05 pm
SEA
- IDA
Nonstop1h 51m
Alaska Airlines
Wed 9/303:57 pm
IDA
- SEA
1 stop7h 42m
Alaska Airlines
Deal found 6/22![Alaska Airlines logo]()
$350
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 7/235:30 am
SEA
- WYS
1 stop5h 56m
Delta
Wed 7/291:10 pm
WYS
- SEA
1 stop4h 18m
Delta
Deal found 6/21![Delta logo]()
$294
This United Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/125:00 am
SEA
- WYS
1 stop7h 32m
United Airlines
Sat 7/185:45 pm
WYS
- SEA
1 stop15h 10m
United Airlines
Deal found 6/24![United Airlines logo]()
$595
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/232:50 pm
SEA
- BOI
Nonstop1h 34m
Delta
Sat 7/258:42 am
BOI
- SEA
Nonstop1h 48m
Delta
Deal found 6/24![Delta logo]()
$297
This Alaska Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 9/48:59 pm
SEA
- IDA
1 stop15h 25m
Alaska Airlines
Mon 9/76:18 am
IDA
- SEA
Nonstop2h 02m
Alaska Airlines
Deal found 6/21![Alaska Airlines logo]()
$365
This Delta deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 8/84:10 pm
SEA
- BOI
Nonstop1h 38m
Delta
Mon 8/1012:23 pm
BOI
- SEA
Nonstop1h 49m
Delta
Deal found 6/25![Delta logo]()
$297
This United Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 8/65:00 am
SEA
- WYS
1 stop7h 32m
United Airlines
Mon 8/102:14 pm
WYS
- SEA
1 stop7h 56m
United Airlines
Deal found 6/25![United Airlines logo]()
$652
Last-minute flights from Seattle to IdahoDiscover last-minute flight deals from Seattle to Idaho. Data last updated June 25, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Idaho. Data last updated June 25, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 7/119:35 pm
SEA
- LWS
Nonstop1h 22m
Delta
Mon 7/209:00 am
LWS
- SEA
Nonstop1h 28m
Delta
Deal found 6/20![Delta logo]()
$269
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 7/119:35 pm
SEA
- LWS
Nonstop1h 22m
Delta
Sat 7/189:00 am
LWS
- SEA
Nonstop1h 28m
Delta
Deal found 6/20![Delta logo]()
$289
This Alaska Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 7/146:21 am
SEA
- GEG
1 stop16h 46m
Alaska Airlines
Sun 7/196:13 am
GEG
- SEA
Nonstop1h 11m
Alaska Airlines
Deal found 6/20![Alaska Airlines logo]()
$288
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 7/159:35 pm
SEA
- LWS
Nonstop1h 22m
Delta
Tue 7/2112:18 pm
LWS
- SEA
1 stop6h 15m
Delta
Deal found 6/20![Delta logo]()
$278
This SmartFares deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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.
Thu 7/167:50 pm
SEA
- GEG
Nonstop1h 06m
Alaska Airlines
Sun 7/196:13 am
GEG
- SEA
Nonstop1h 11m
Alaska Airlines
Deal found 6/23![Alaska Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 7/169:35 am
SEA
- GEG
Nonstop1h 13m
Delta
Sun 7/195:37 pm
GEG
- SEA
Nonstop1h 24m
Delta
Deal found 6/22![Delta logo]()
$267
This Vliegwinkel deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/169:31 pm
SEA
- BOI
Nonstop1h 33m
Alaska Airlines
Sun 7/196:23 am
BOI
- SEA
Nonstop1h 37m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$286
This Delta deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 7/167:40 pm
SEA
- BOI
Nonstop1h 38m
Delta
Sat 7/186:07 pm
BOI
- SEA
Nonstop1h 35m
Delta
Deal found 6/22![Delta logo]()
$297
This CheapOair deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1911:23 am
SEA
- GEG
Nonstop1h 06m
Alaska Airlines
Sun 7/267:23 am
GEG
- SEA
Nonstop1h 11m
Alaska Airlines
Deal found 6/21![Alaska Airlines logo]()
$269
This CheapOair deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2011:23 am
SEA
- GEG
Nonstop1h 06m
Alaska Airlines
Mon 7/277:45 pm
GEG
- SEA
Nonstop1h 14m
Alaska Airlines
Deal found 6/22![Alaska Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 7/235:30 am
SEA
- WYS
1 stop5h 56m
Delta
Wed 7/291:10 pm
WYS
- SEA
1 stop4h 18m
Delta
Deal found 6/21![Delta logo]()
$294
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/249:35 pm
SEA
- LWS
Nonstop1h 22m
Delta
Sun 7/269:00 am
LWS
- SEA
Nonstop1h 28m
Delta
Deal found 6/24![Delta logo]()
$249
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 June 25, 2026.
Search for one-way flight options from Seattle to Idaho. Find affordable one-way fares based on user searches. Data last updated June 25, 2026.
This United Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 8/197:11 am
SEA
- BOI
1 stop7h 20m
United Airlines
Deal found 6/25![United Airlines logo]()
$94
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/211:55 pm
SEA
- BOI
1 stop7h 40m
Southwest
Deal found 6/23![Southwest logo]()
$109
This Alaska Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/199:18 pm
SEA
- BOI
Nonstop1h 26m
Alaska Airlines
Deal found 6/23![Alaska Airlines logo]()
$114
This Super.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2212:35 pm
SEA
- BOI
1 stop22h 54m
Frontier
Deal found 6/21![Frontier logo]()
$118
This Super.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:06 pm
SEA
- BOI
1 stop16h 23m
Frontier
Deal found 6/21![Frontier logo]()
$119
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 8/209:05 am
SEA
- BOI
1 stop5h 26m
United Airlines
Deal found 6/22![United Airlines logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 9/169:16 pm
SEA
- GEG
1 stop12h 03m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$126
This Expedia deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 8/216:03 pm
SEA
- GEG
1 stop3h 10m
Alaska Airlines
Deal found 6/22![Alaska Airlines logo]()
$128
This Alaska Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/196:51 pm
SEA
- GEG
1 stop4h 20m
Alaska Airlines
Deal found 6/23![Alaska Airlines logo]()
$129
This Super.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:06 pm
SEA
- BOI
1 stop16h 23m
Frontier
Deal found 6/21![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 8/247:06 pm
SEA
- BOI
1 stop16h 23m
Frontier
Deal found 6/24![Frontier logo]()
$135
This Alaska Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 9/197:00 am
SEA
- SUN
Nonstop1h 46m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$139
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 June 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $182 (Delta) |
One-way from | $94 (United Airlines) |
Popular in | June |
Cheapest in | January |
Average price | $311 |
Good round-trip deal | $297 or less |
Good one-way deal | $178 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 June 25, 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 - BOI
SEABOI
Seattle/Tacoma Intl
Thu 10/1
9:18 pm-11:44 pm
Nonstop1h 26m
Boise Air Term. Gowen Fld
Mon 10/5
2:08 pm-2:46 pm
Nonstop1h 38m
$197
SeattleBoise
SEA - BOI
SEABOI
Seattle/Tacoma Intl
Fri 10/2
9:00 am-11:34 am
Nonstop1h 34m
Boise Air Term. Gowen Fld
Mon 10/5
7:19 pm-8:14 pm
Nonstop1h 55m
$217
SeattleBoise
SEA - BOI
SEABOI
Seattle/Tacoma Intl
Fri 10/16
9:25 pm-11:52 pm
Nonstop1h 27m
Boise Air Term. Gowen Fld
Sun 10/18
2:35 pm-3:25 pm
Nonstop1h 50m
$217
SeattleBoise
SEA - BOI
SEABOI
Seattle/Tacoma Intl
Thu 10/1
4:03 pm-6:39 pm
Nonstop1h 36m
Boise Air Term. Gowen Fld
Mon 10/5
8:55 am-9:50 am
Nonstop1h 55m
$217
SeattleSpokane
SEA - GEG
SEAGEG
Seattle/Tacoma Intl
Fri 9/4
10:49 pm-11:59 pm
Nonstop1h 10m
Spokane
Tue 9/8
9:23 am-10:55 am
Nonstop1h 32m
$227
SeattleSpokane
SEA - GEG
SEAGEG
Seattle/Tacoma Intl
Thu 8/27
5:56 pm-7:14 pm
Nonstop1h 18m
Spokane
Mon 8/31
7:05 am-8:29 am
Nonstop1h 24m
$237
SeattleSpokane
SEA - GEG
SEAGEG
Seattle/Tacoma Intl
Thu 8/20
9:15 am-10:29 am
Nonstop1h 14m
Spokane
Sun 8/23
7:05 am-8:29 am
Nonstop1h 24m
$237
Quickest round-trip
SeattleSpokane
SEA - GEG
SEAGEG
Seattle/Tacoma Intl
Thu 8/6
7:20 am-8:26 am
Nonstop1h 06m
Spokane
Sat 9/19
2:33 pm-3:45 pm
Nonstop1h 12m
$242
SeattleSpokane
SEA - GEG
SEAGEG
Seattle/Tacoma Intl
Sat 9/26
6:45 pm-7:53 pm
Nonstop1h 08m
Spokane
Tue 9/29
6:00 am-12:39 pm
1 stop6h 39m
$248
SeattleSpokane
SEA - GEG
SEAGEG
Seattle/Tacoma Intl
Sat 10/10
1:31 pm-2:40 pm
Nonstop1h 09m
Spokane
Tue 10/13
7:16 am-11:37 pm
1 stop16h 21m
$248
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-SUN
SEA-LWS
SEA-WYS
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-SUN
SEA-LWS
What is the cheapest month to book a flight from Seattle to Idaho?
Currently, October is the cheapest month in which you can book a flight from Seattle to Idaho (average of $59). Flying from Seattle to Idaho in July is currently the most expensive (average of $184). 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 June 25, 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 23% 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 June 25, 2026.
The most flights from SEA to USID are scheduled on a Monday (43 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (23 on average).
How much does it cost to fly round-trip from Seattle to Idaho?
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 June 20, 2026.
Travelers seeking maximum savings on their Seattle to Idaho flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Idaho
Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated June 25, 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.
Comfort
7.8
Overall
7.9
Crew
8.5
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Comfort
7.8
Overall
7.9
Crew
8.5
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Comfort
7.8
Overall
7.9
Crew
8.5
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Comfort
7.8
Overall
7.9
Crew
8.5
Entertainment
7.0
Boarding
8.1
Food
7.0
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
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Idaho by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from 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 June 25, 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 June 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$79 | Average$374 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$104 | Average$304 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$108 | Average$290 | FlexibilityNo cancel fee | On-time85% |