$59+ Cheap flights from California 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BOI
Aug 30 — Sep 61
Round-trip
1 adult, Economy
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Cheapest flights from California to IdahoExplore the most affordable flight options available from California to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2026.
Explore the most affordable flight options available from California to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2026.
This Expedia deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 8/2910:47 am
SMF
- GEG
1 stop12h 02m
Alaska Airlines
Sat 9/56:21 pm
GEG
- SMF
1 stop4h 09m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$117
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/297:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Tue 9/17:03 am
GEG
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$117
This Expedia deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 10/77:59 pm
SAN
- GEG
Nonstop2h 51m
Alaska Airlines
Sat 10/107:19 am
GEG
- SAN
Nonstop2h 52m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$121
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/17:05 am
SAN
- GEG
1 stop4h 45m
Southwest
Sat 9/52:15 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Deal found 7/29![Southwest logo]()
$123
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 8/298:40 am
SAN
- GEG
1 stop5h 00m
Southwest
Sat 9/52:15 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Deal found 7/30![Southwest logo]()
$127
This Expedia deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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.
Tue 9/17:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Fri 9/47:03 am
GEG
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$135
This Expedia deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
Sun 8/306:00 am
SMF
- GEG
1 stop5h 03m
Alaska Airlines
Sat 9/56:21 pm
GEG
- SMF
1 stop4h 09m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$137
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:15 am
SAN
- GEG
1 stop6h 04m
Delta
Wed 10/143:30 pm
GEG
- SAN
1 stop7h 21m
Delta
Deal found 7/29![Delta logo]()
$137
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/17:05 am
SAN
- GEG
1 stop4h 45m
Southwest
Fri 9/412:20 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Deal found 7/28![Southwest logo]()
$141
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/267:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Tue 9/17:03 am
GEG
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$145
This Priceline deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
Sun 8/306:00 am
SMF
- GEG
1 stop5h 03m
Alaska Airlines
Sun 9/65:52 am
GEG
- SMF
1 stop6h 14m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$157
This Trip.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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.
Mon 8/245:00 pm
SMF
- GEG
1 stop5h 49m
Alaska Airlines
Sat 8/297:03 am
GEG
- SMF
1 stop5h 03m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$162
Best flights from California to IdahoDiscover carefully curated flight deals from California to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2026.
Discover carefully curated flight deals from California to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2026.
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:46 am
SAN
- GEG
1 stop6h 23m
Delta
Wed 9/95:10 am
GEG
- SAN
1 stop4h 59m
Delta
Deal found 7/29![Delta logo]()
$137
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/202:15 pm
SAN
- GEG
Nonstop2h 40m
Southwest
Sun 8/2312:05 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Deal found 7/28![Southwest logo]()
$153
This Alaska Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/157:46 pm
SFO
- BOI
Nonstop1h 41m
Alaska Airlines
Sat 9/1910:14 am
BOI
- SFO
Nonstop1h 56m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$207
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/2012:45 pm
SFO
- BOI
Nonstop1h 46m
United Airlines
Wed 8/266:15 am
BOI
- SFO
Nonstop2h 03m
United Airlines
Deal found 7/29![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:15 pm
SAN
- GEG
Nonstop2h 40m
Southwest
Sun 9/134:40 pm
GEG
- SAN
1 stop5h 15m
Southwest
Deal found 7/26![Southwest logo]()
$163
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 10/76:15 am
SAN
- GEG
1 stop6h 04m
Delta
Tue 10/135:10 am
GEG
- SAN
1 stop4h 57m
Delta
Deal found 7/28![Delta logo]()
$173
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 8/275:40 pm
SAN
- GEG
1 stop4h 30m
Southwest
Thu 9/312:20 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Deal found 7/30![Southwest logo]()
$167
This Southwest deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/222:50 pm
SAN
- GEG
2 stops5h 30m
Southwest
Sat 8/292:15 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Deal found 7/26![Southwest logo]()
$168
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 10/86:07 am
SFO
- BOI
1 stop6h 43m
Alaska Airlines
Tue 10/138:57 am
BOI
- SFO
Nonstop1h 58m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$212
This Southwest deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/284:10 pm
SAN
- GEG
2 stops7h 05m
Southwest
Mon 8/316:55 am
GEG
- SAN
1 stop4h 20m
Southwest
Deal found 7/26![Southwest logo]()
$178
This Alaska Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/307:46 pm
SFO
- BOI
Nonstop1h 41m
Alaska Airlines
Wed 10/75:59 am
BOI
- SFO
1 stop4h 24m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/275:36 pm
SFO
- GEG
1 stop6h 23m
Delta
Mon 8/319:25 am
GEG
- SFO
1 stop7h 31m
Delta
Deal found 7/29![Delta logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:14 pm
LAX
- BOI
Nonstop2h 09m
Alaska Airlines
Tue 10/66:43 am
BOI
- LAX
1 stop7h 22m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$217
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 8/289:00 am
SAN
- GEG
1 stop6h 00m
Southwest
Fri 9/412:20 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Deal found 7/31![Southwest logo]()
$183
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/262:00 pm
SFO
- GEG
1 stop5h 14m
Delta
Mon 8/315:15 am
GEG
- SFO
1 stop4h 21m
Delta
Deal found 7/29![Delta logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/187:51 pm
LAX
- BOI
Nonstop2h 09m
Alaska Airlines
Mon 9/216:47 pm
BOI
- LAX
Nonstop2h 18m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/188:15 am
SFO
- BOI
Nonstop1h 51m
United Airlines
Mon 9/217:05 pm
BOI
- SFO
Nonstop1h 53m
United Airlines
Deal found 7/28![United Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/109:10 pm
LAX
- GEG
Nonstop2h 38m
Delta
Sun 9/136:22 am
GEG
- LAX
Nonstop2h 48m
Delta
Deal found 7/27![Delta logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:06 pm
BUR
- BOI
Nonstop2h 10m
Alaska Airlines
Sat 9/199:49 am
BOI
- BUR
Nonstop2h 14m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/119:10 pm
LAX
- GEG
Nonstop2h 38m
Delta
Sun 9/134:19 pm
GEG
- LAX
Nonstop2h 54m
Delta
Deal found 7/29![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:55 am
LAX
- BOI
1 stop5h 15m
Southwest
Wed 9/163:30 pm
BOI
- LAX
2 stops6h 45m
Southwest
Deal found 7/27![Southwest logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/315:16 pm
SFO
- GEG
1 stop5h 33m
Alaska Airlines
Tue 9/17:03 am
GEG
- SFO
1 stop5h 57m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$227
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/3010:35 am
LAX
- JAC
Nonstop2h 20m
United Airlines
Wed 9/29:28 am
JAC
- LAX
1 stop7h 07m
United Airlines
Deal found 7/26![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/137:19 pm
SFO
- BOI
1 stop3h 39m
Delta
Fri 9/186:44 pm
BOI
- SFO
1 stop4h 31m
Delta
Deal found 7/28![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/122:55 pm
LAX
- GEG
1 stop6h 35m
Southwest
Mon 9/146:55 am
GEG
- LAX
1 stop7h 30m
Southwest
Deal found 7/30![Southwest logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 11/119:00 am
LAX
- GEG
1 stop7h 25m
Alaska Airlines
Thu 11/124:37 pm
GEG
- LAX
1 stop6h 11m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$237
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 11/212:45 pm
LAX
- JAC
1 stop7h 12m
United Airlines
Fri 11/62:25 pm
JAC
- LAX
1 stop6h 04m
United Airlines
Deal found 7/30![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 10/22:15 pm
SFO
- GEG
1 stop4h 35m
Delta
Sun 10/45:10 am
GEG
- SFO
1 stop4h 24m
Delta
Deal found 7/29![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:10 am
SFO
- GEG
1 stop6h 30m
Southwest
Mon 9/1412:20 pm
GEG
- SFO
1 stop6h 10m
Southwest
Deal found 7/30![Southwest logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/125:11 pm
SMF
- GEG
1 stop6h 48m
Alaska Airlines
Sat 9/193:05 pm
GEG
- SMF
1 stop4h 33m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$237
Last-minute flights from California to IdahoDiscover last-minute flight deals from California to Idaho. Data last updated July 31, 2026 and is based on user searches.
Discover last-minute flight deals from California to Idaho. Data last updated July 31, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/215:01 pm
SAN
- GEG
1 stop6h 52m
Delta
Wed 9/24:20 pm
GEG
- SAN
1 stop6h 29m
Delta
Deal found 7/28![Delta logo]()
$155
This Southwest deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 8/2211:15 am
SAN
- GEG
Nonstop2h 45m
Southwest
Sat 8/292:15 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Deal found 7/26![Southwest logo]()
$153
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/247:13 pm
SAN
- GEG
1 stop4h 40m
Delta
Tue 9/17:05 am
GEG
- SAN
1 stop8h 11m
Delta
Deal found 7/29![Delta logo]()
$157
This Trip.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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.
Mon 8/245:00 pm
SMF
- GEG
1 stop5h 49m
Alaska Airlines
Sat 8/297:03 am
GEG
- SMF
1 stop5h 03m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$162
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/267:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Tue 9/17:03 am
GEG
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$145
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/267:05 am
SAN
- GEG
1 stop4h 45m
Southwest
Wed 9/27:30 am
GEG
- SAN
1 stop7h 10m
Southwest
Deal found 7/29![Southwest logo]()
$152
This Expedia deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 8/2910:47 am
SMF
- GEG
1 stop12h 02m
Alaska Airlines
Sat 9/56:21 pm
GEG
- SMF
1 stop4h 09m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$117
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/297:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Tue 9/17:03 am
GEG
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$117
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 8/298:40 am
SAN
- GEG
1 stop5h 00m
Southwest
Sat 9/52:15 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Deal found 7/30![Southwest logo]()
$127
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/297:03 am
SAN
- GEG
1 stop5h 05m
Delta
Tue 9/14:20 pm
GEG
- SAN
1 stop6h 29m
Delta
Deal found 7/29![Delta logo]()
$137
This Expedia deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
Sun 8/306:00 am
SMF
- GEG
1 stop5h 03m
Alaska Airlines
Sat 9/56:21 pm
GEG
- SMF
1 stop4h 09m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$137
This Priceline deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
Sun 8/306:00 am
SMF
- GEG
1 stop5h 03m
Alaska Airlines
Sun 9/65:52 am
GEG
- SMF
1 stop6h 14m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$157
One-way flights from California to IdahoSearch for one-way flight options from California to Idaho. Find affordable one-way fares based on user searches. Data last updated July 31, 2026.
Search for one-way flight options from California to Idaho. Find affordable one-way fares based on user searches. Data last updated July 31, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:00 pm
SMF
- GEG
1 stop5h 49m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$59
This Alaska Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/298:59 pm
SAN
- GEG
Nonstop2h 54m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$59
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/297:05 am
SAN
- GEG
1 stop4h 45m
Southwest
Deal found 7/30![Southwest logo]()
$64
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 8/297:45 am
SAN
- GEG
1 stop5h 55m
Southwest
Deal found 7/30![Southwest logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 10/299:56 pm
LAX
- BOI
1 stop16h 01m
Frontier
Deal found 7/30![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/95:20 pm
LAX
- BOI
1 stop19h 35m
Frontier
Deal found 7/31![Frontier logo]()
$73
This Trip.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/258:59 pm
SAN
- GEG
Nonstop2h 54m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/1010:04 pm
LAX
- BOI
1 stop14h 51m
Frontier
Deal found 7/26![Frontier logo]()
$75
This Alaska Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/247:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$77
This Priceline deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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.
Sun 8/308:00 am
SMF
- GEG
1 stop6h 47m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$79
This Alaska Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 8/317:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$79
This Super.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/299:09 pm
LAX
- BOI
1 stop13h 20m
Frontier
Deal found 7/30![Frontier logo]()
$80
Find flight deals from California to Idaho
Keep the following information in mind while searching for California to Idaho flight deals. Data was last updated July 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $117 (Expedia) |
One-way from | $59 (Alaska Airlines) |
Popular in | July |
Cheapest in | April |
Average price | $387 |
Good round-trip deal | $174 or less |
Good one-way deal | $79 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from California 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 July 31, 2026.
Use the filters below to find and compare flights from California to Idaho that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Sat 9/5
9:46 am-4:09 pm
1 stop6h 23m
Spokane
Wed 9/9
5:10 am-10:09 am
1 stop4h 59m
$137
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Thu 8/20
2:15 pm-4:55 pm
Nonstop2h 40m
Spokane
Sun 8/23
12:05 pm-2:45 pm
Nonstop2h 40m
$153
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Fri 9/11
2:15 pm-4:55 pm
Nonstop2h 40m
Spokane
Sun 9/13
4:40 pm-9:55 pm
1 stop5h 15m
$163
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Thu 8/27
5:40 pm-10:10 pm
1 stop4h 30m
Spokane
Thu 9/3
12:20 pm-3:00 pm
Nonstop2h 40m
$167
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Sat 8/22
2:50 pm-8:20 pm
2 stops5h 30m
Spokane
Sat 8/29
2:15 pm-4:55 pm
Nonstop2h 40m
$168
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Wed 10/7
6:15 am-12:19 pm
1 stop6h 04m
Spokane
Tue 10/13
5:10 am-10:07 am
1 stop4h 57m
$173
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Fri 8/28
4:10 pm-11:15 pm
2 stops7h 05m
Spokane
Mon 8/31
6:55 am-11:15 am
1 stop4h 20m
$178
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Fri 8/28
9:00 am-3:00 pm
1 stop6h 00m
Spokane
Fri 9/4
12:20 pm-3:00 pm
Nonstop2h 40m
$183
Quickest round-trip
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Tue 9/15
7:46 pm-10:27 pm
Nonstop1h 41m
Boise Air Term. Gowen Fld
Sat 9/19
10:14 am-11:10 am
Nonstop1h 56m
$207
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Thu 10/8
6:07 am-1:50 pm
1 stop6h 43m
Boise Air Term. Gowen Fld
Tue 10/13
8:57 am-9:55 am
Nonstop1h 58m
$212
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from California to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from California with our price prediction graph.
SMF-GEG
SAN-GEG
SFO-BOI
SFO-GEG
LAX-BOI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from California to Idaho
USCA-USID
SMF-GEG
SAN-GEG
SFO-BOI
SFO-GEG
What is the cheapest month to book a flight from California to Idaho?
Currently, April is the cheapest month in which you can book a flight from California to Idaho (average of $280). Flying from California to Idaho in July is currently the most expensive (average of $381). 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 CA to ID?
Find hourly flight availability from California 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 July 31, 2026.
A simple way to save on the total cost of your ticket is to fly from California to Idaho in the evening. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight at noon.
Weekly flight availability from California to Idaho
Explore weekly flight availability from California 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 July 31, 2026.
The most flights from USCA to USID are scheduled on a Sunday (28 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (13 on average).
How much does it cost to fly round-trip from California to Idaho?
Airfare is below average for this route at the moment.
California to Idaho flights typically cost between $228 and $421 in September.The cheapest round-trip price found within the last 5 days was $207 on Alaska Airlines (Sep 9-Sep 15).
How far ahead should I book a flight from California to Idaho?
The best time to book flights from California to Idaho is 81 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 California to Idaho?
Use this chart to determine the cheapest time to fly round-trip from California to Idaho. Price data was last updated on July 25, 2026.
Travelers seeking maximum savings on their California to Idaho flight should consider departing on Tuesday at noon when fares are most often at their lowest. Friday mornings 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 July 31, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, andDelta from California to Idaho to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from California to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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.
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Alternative routes for California 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 California to Idaho by cabin class
Find flights from California to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
California and Idaho flights
Browse other California and Idaho flight options. Last updated on July 31, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Idaho
Find the right flight back to California after your stay in Idaho
California to Idaho flights
Consider these flights traveling from California to Idaho.
Top 9 airlines flying from California to Idaho
Discover the top 9 airlines that operate flights from California 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 July 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$78 | Average$221 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$108 | Average$441 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$111 | Average$212 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$119 | Average$359 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$132 | Average$246 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$134 | Average$415 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$147 | Average$338 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$256 | Average$306 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$307 | Average$567 | FlexibilityNo cancel fee | On-time71% |