$68+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BOI
Apr 15 — Apr 221
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 March 16, 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 March 16, 2026.
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Sat 5/27:24 pm
SAN
- GEG
Nonstop2h 56m
Alaska Airlines
Tue 5/510:30 am
GEG
- SAN
Nonstop2h 48m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$137
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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 4/156:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Sat 4/184:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$137
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:40 am
SFO
- GEG
1 stop8h 05m
Southwest
Sat 5/161:45 pm
GEG
- SFO
1 stop4h 50m
Southwest
Deal found 3/11![Southwest logo]()
$146
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:55 am
SFO
- GEG
1 stop7h 10m
Southwest
Wed 5/62:25 pm
GEG
- SFO
1 stop8h 20m
Southwest
Deal found 3/11![Southwest logo]()
$151
This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/21:50 pm
SAN
- GEG
2 stops8h 25m
Southwest
Sat 5/911:05 am
GEG
- SAN
Nonstop2h 40m
Southwest
Deal found 3/12![Southwest logo]()
$152
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 4/106:56 pm
SFO
- BOI
Nonstop1h 44m
Alaska Airlines
Mon 4/137:40 am
BOI
- SFO
Nonstop2h 00m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$157
This Expedia deal was found by Cheapflights users on 3/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:57 pm
SFO
- GEG
1 stop4h 52m
Alaska Airlines
Wed 5/61:20 pm
GEG
- SFO
Nonstop2h 20m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$157
This Expedia deal was found by Cheapflights users on 3/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:37 pm
SAN
- GEG
Nonstop2h 57m
Alaska Airlines
Sun 4/197:19 am
GEG
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 3/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/222:10 pm
ONT
- BOI
1 stop3h 50m
Southwest
Sat 4/253:25 pm
BOI
- ONT
1 stop4h 55m
Southwest
Deal found 3/14![Southwest logo]()
$157
This CheapOair deal was found by Cheapflights users on 3/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:59 pm
BUR
- BOI
Nonstop2h 18m
Alaska Airlines
Tue 4/1411:01 am
BOI
- BUR
Nonstop2h 13m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$157
This Delta deal was found by Cheapflights users on 3/12. 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.
Wed 4/1512:00 pm
LAX
- BOI
Nonstop2h 03m
Delta
Sat 4/184:55 pm
BOI
- LAX
Nonstop2h 19m
Delta
Deal found 3/12![Delta logo]()
$157
This Trip.com deal was found by Cheapflights users on 3/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:43 pm
LAX
- BOI
1 stop8h 16m
Alaska Airlines
Wed 5/69:02 am
BOI
- LAX
1 stop7h 15m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$159
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 March 16, 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 March 16, 2026.
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Sat 5/27:24 pm
SAN
- GEG
Nonstop2h 56m
Alaska Airlines
Tue 5/510:30 am
GEG
- SAN
Nonstop2h 48m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$137
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:55 am
SFO
- GEG
1 stop7h 10m
Southwest
Wed 5/62:40 pm
GEG
- SFO
2 stops8h 05m
Southwest
Deal found 3/11![Southwest logo]()
$156
This United Airlines deal was found by Cheapflights users on 3/11. 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 4/58:20 am
SFO
- BOI
Nonstop2h 03m
United Airlines
Sat 4/116:15 am
BOI
- SFO
Nonstop2h 04m
United Airlines
Deal found 3/11![United Airlines logo]()
$157
This Delta deal was found by Cheapflights users on 3/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:01 pm
SAN
- GEG
1 stop5h 28m
Delta
Tue 5/124:15 pm
GEG
- SAN
1 stop6h 11m
Delta
Deal found 3/15![Delta logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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 4/156:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Sat 4/184:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$147
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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 4/146:56 pm
SFO
- BOI
Nonstop1h 44m
Alaska Airlines
Sat 4/187:40 am
BOI
- SFO
Nonstop2h 00m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:40 am
SFO
- BOI
1 stop6h 40m
Southwest
Wed 4/154:05 pm
BOI
- SFO
1 stop7h 40m
Southwest
Deal found 3/11![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 3/11. 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.
Sun 5/35:55 am
SFO
- GEG
1 stop4h 50m
Delta
Sun 5/105:00 am
GEG
- SFO
1 stop4h 34m
Delta
Deal found 3/11![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/42:25 pm
SFO
- GEG
1 stop7h 55m
Southwest
Wed 5/65:10 am
GEG
- SFO
1 stop4h 40m
Southwest
Deal found 3/12![Southwest logo]()
$182
This Alaska Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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 4/146:00 pm
LAX
- BOI
1 stop3h 52m
Alaska Airlines
Tue 4/217:40 am
BOI
- LAX
1 stop7h 21m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$177
This Delta deal was found by Cheapflights users on 3/14. 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.
Wed 4/297:57 pm
LAX
- BOI
Nonstop2h 03m
Delta
Sun 5/34:55 pm
BOI
- LAX
Nonstop2h 19m
Delta
Deal found 3/14![Delta logo]()
$197
This United Airlines deal was found by Cheapflights users on 3/11. 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 5/212:10 pm
SFO
- GEG
Nonstop2h 21m
United Airlines
Tue 5/512:25 pm
GEG
- SFO
Nonstop2h 28m
United Airlines
Deal found 3/11![United Airlines logo]()
$222
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/21:50 pm
LAX
- BOI
1 stop5h 35m
Southwest
Mon 5/46:55 pm
BOI
- LAX
1 stop4h 35m
Southwest
Deal found 3/11![Southwest logo]()
$184
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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 5/27:15 am
SFO
- GEG
1 stop15h 05m
Alaska Airlines
Tue 5/51:20 pm
GEG
- SFO
Nonstop2h 20m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$182
This Delta deal was found by Cheapflights users on 3/11. 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.
Wed 4/227:57 pm
LAX
- BOI
Nonstop2h 03m
Delta
Sun 4/264:55 pm
BOI
- LAX
Nonstop2h 19m
Delta
Deal found 3/11![Delta logo]()
$202
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Wed 4/294:25 pm
SFO
- GEG
Nonstop2h 26m
United Airlines
Wed 5/612:25 pm
GEG
- SFO
Nonstop2h 28m
United Airlines
Deal found 3/11![United Airlines logo]()
$223
This Southwest deal was found by Cheapflights users on 3/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:50 pm
BUR
- BOI
2 stops6h 35m
Southwest
Tue 4/144:05 pm
BOI
- BUR
2 stops6h 50m
Southwest
Deal found 3/15![Southwest logo]()
$187
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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 4/156:59 pm
BUR
- BOI
Nonstop2h 18m
Alaska Airlines
Sat 4/1811:01 am
BOI
- BUR
Nonstop2h 13m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$187
This Southwest deal was found by Cheapflights users on 3/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:20 pm
BUR
- BOI
1 stop3h 35m
Southwest
Tue 4/215:00 pm
BOI
- BUR
1 stop4h 25m
Southwest
Deal found 3/14![Southwest logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 3/15. 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.
Wed 4/152:45 pm
LAX
- BOI
1 stop6h 14m
Alaska Airlines
Sat 4/187:05 pm
BOI
- LAX
Nonstop2h 17m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$187
This United Airlines deal was found by Cheapflights users on 3/11. 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 4/2510:49 am
ONT
- BOI
1 stop4h 59m
United Airlines
Tue 4/2812:30 pm
BOI
- ONT
1 stop6h 32m
United Airlines
Deal found 3/11![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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 4/235:05 am
SFO
- GEG
2 stops7h 45m
Southwest
Sat 4/252:25 pm
GEG
- SFO
1 stop6h 55m
Southwest
Deal found 3/16![Southwest logo]()
$202
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Sat 5/24:57 pm
LAX
- GEG
1 stop16h 04m
Alaska Airlines
Tue 5/57:09 am
GEG
- LAX
Nonstop2h 50m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$191
This United Airlines deal was found by Cheapflights users on 3/11. 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 4/46:00 am
ONT
- BOI
1 stop4h 06m
United Airlines
Sun 4/56:15 am
BOI
- ONT
1 stop4h 41m
United Airlines
Deal found 3/11![United Airlines logo]()
$264
This Southwest deal was found by Cheapflights users on 3/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/165:05 am
SFO
- GEG
2 stops7h 45m
Southwest
Sat 4/181:10 pm
GEG
- SFO
2 stops8h 10m
Southwest
Deal found 3/14![Southwest logo]()
$207
This Delta deal was found by Cheapflights users on 3/14. 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 5/165:55 am
SFO
- BOI
1 stop4h 40m
Delta
Sat 5/166:00 pm
BOI
- SFO
1 stop7h 05m
Delta
Deal found 3/14![Delta logo]()
$285
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Tue 5/57:44 pm
SFO
- BOI
Nonstop1h 43m
Alaska Airlines
Sat 5/92:57 pm
BOI
- SFO
1 stop7h 26m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$197
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Fri 4/310:40 am
SFO
- JAC
Nonstop2h 16m
United Airlines
Sun 4/53:20 pm
JAC
- SFO
Nonstop2h 47m
United Airlines
Deal found 3/11![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 3/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:40 pm
LAX
- GEG
Nonstop2h 38m
Delta
Thu 6/46:25 am
GEG
- LAX
Nonstop2h 50m
Delta
Deal found 3/15![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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 4/306:55 pm
SNA
- BOI
1 stop5h 05m
Southwest
Sun 5/35:30 am
BOI
- SNA
1 stop4h 05m
Southwest
Deal found 3/16![Southwest logo]()
$227
Last-minute flights from California to IdahoDiscover last-minute flight deals from California to Idaho. Data last updated March 16, 2026 and is based on user searches.
Discover last-minute flight deals from California to Idaho. Data last updated March 16, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 3/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:59 pm
BUR
- BOI
Nonstop2h 18m
Alaska Airlines
Tue 4/1411:01 am
BOI
- BUR
Nonstop2h 13m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$157
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 4/106:56 pm
SFO
- BOI
Nonstop1h 44m
Alaska Airlines
Sun 4/127:40 am
BOI
- SFO
Nonstop2h 00m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$157
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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 4/156:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Sat 4/184:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$137
This Expedia deal was found by Cheapflights users on 3/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:37 pm
SAN
- GEG
Nonstop2h 57m
Alaska Airlines
Sun 4/197:19 am
GEG
- SAN
Nonstop2h 51m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$157
This Delta deal was found by Cheapflights users on 3/12. 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.
Wed 4/1512:00 pm
LAX
- BOI
Nonstop2h 03m
Delta
Sat 4/184:55 pm
BOI
- LAX
Nonstop2h 19m
Delta
Deal found 3/12![Delta logo]()
$157
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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 4/155:21 pm
SFO
- BOI
1 stop4h 31m
Alaska Airlines
Sat 4/187:40 am
BOI
- SFO
Nonstop2h 00m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$162
This Alaska Airlines deal was found by Cheapflights users on 3/14. 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 4/222:59 pm
ONT
- BOI
Nonstop2h 00m
Alaska Airlines
Sat 4/251:15 pm
BOI
- ONT
Nonstop2h 04m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/224:50 pm
LAX
- BOI
2 stops6h 35m
Southwest
Sat 4/2511:00 am
BOI
- LAX
2 stops7h 40m
Southwest
Deal found 3/12![Southwest logo]()
$161
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:55 am
SFO
- GEG
1 stop7h 10m
Southwest
Wed 5/62:25 pm
GEG
- SFO
1 stop8h 20m
Southwest
Deal found 3/11![Southwest logo]()
$151
This Expedia deal was found by Cheapflights users on 3/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:57 pm
SFO
- GEG
1 stop4h 52m
Alaska Airlines
Wed 5/61:20 pm
GEG
- SFO
Nonstop2h 20m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$157
This Trip.com deal was found by Cheapflights users on 3/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:43 pm
LAX
- BOI
1 stop8h 16m
Alaska Airlines
Wed 5/69:02 am
BOI
- LAX
1 stop7h 15m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$159
This Cheapflightsfares deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:14 am
SNA
- BOI
Nonstop2h 09m
Allegiant Air
Sun 5/33:13 pm
BOI
- SNA
Nonstop2h 15m
Allegiant Air
Deal found 3/16![Allegiant Air logo]()
$161
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 March 16, 2026.
Search for one-way flight options from California to Idaho. Find affordable one-way fares based on user searches. Data last updated March 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/14. 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 7/410:26 am
SNA
- BOI
Nonstop2h 04m
Allegiant Air
Deal found 3/14![Allegiant Air logo]()
$68
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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 5/136:53 pm
SAN
- GEG
Nonstop2h 52m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$69
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/194:50 pm
BUR
- BOI
1 stop6h 35m
Southwest
Deal found 3/11![Southwest logo]()
$70
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Tue 4/76:56 pm
SFO
- BOI
Nonstop1h 44m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$74
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Wed 5/207:10 pm
SFO
- GEG
Nonstop2h 30m
United Airlines
Deal found 3/11![United Airlines logo]()
$74
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:55 am
SFO
- GEG
1 stop7h 10m
Southwest
Deal found 3/11![Southwest logo]()
$76
This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/193:35 pm
LAX
- BOI
1 stop6h 55m
Southwest
Deal found 3/12![Southwest logo]()
$76
This SmartFares deal was found by Cheapflights users on 3/12. 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.
Tue 5/1210:28 am
SFO
- GEG
Nonstop2h 12m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$77
This United Airlines deal was found by Cheapflights users on 3/11. 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 5/28:25 am
SFO
- BOI
Nonstop2h 02m
United Airlines
Deal found 3/11![United Airlines logo]()
$78
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Tue 5/123:45 pm
LAX
- GEG
1 stop7h 26m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$79
This United Airlines deal was found by Cheapflights users on 3/11. 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 4/1112:31 pm
SFO
- BOI
Nonstop1h 53m
United Airlines
Deal found 3/11![United Airlines logo]()
$79
This Expedia deal was found by Cheapflights users on 3/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:28 am
SFO
- GEG
Nonstop2h 12m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$79
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 March 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $137 (Alaska Airlines) |
One-way from | $68 (Kiwi.com) |
Popular in | February |
Cheapest in | April |
Average price | $367 |
Good round-trip deal | $154 or less |
Good one-way deal | $78 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 March 16, 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 5/2
7:24 pm-10:20 pm
Nonstop2h 56m
Spokane
Tue 5/5
10:30 am-1:18 pm
Nonstop2h 48m
$137
OntarioBoise
ONT - BOI
ONTBOI
Ontario
Wed 4/15
6:25 pm-9:26 pm
Nonstop2h 01m
Boise Air Term. Gowen Fld
Sat 4/18
4:40 pm-5:45 pm
Nonstop2h 05m
$147
San FranciscoSpokane
SFO - GEG
SFOGEG
San Francisco
Wed 4/29
5:55 am-1:05 pm
1 stop7h 10m
Spokane
Wed 5/6
2:40 pm-10:45 pm
2 stops8h 05m
$156
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Sun 4/5
8:20 am-11:23 am
Nonstop2h 03m
Boise Air Term. Gowen Fld
Sat 4/11
6:15 am-7:19 am
Nonstop2h 04m
$157
Quickest round-trip
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Tue 4/14
6:56 pm-9:40 pm
Nonstop1h 44m
Boise Air Term. Gowen Fld
Sat 4/18
7:40 am-8:40 am
Nonstop2h 00m
$157
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Sat 5/9
5:01 pm-10:29 pm
1 stop5h 28m
Spokane
Tue 5/12
4:15 pm-10:26 pm
1 stop6h 11m
$177
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Wed 4/8
5:40 am-1:20 pm
1 stop6h 40m
Boise Air Term. Gowen Fld
Wed 4/15
4:05 pm-10:45 pm
1 stop7h 40m
$177
Los AngelesBoise
LAX - BOI
LAXBOI
Los Angeles Los Angeles
Tue 4/14
6:00 pm-10:52 pm
1 stop3h 52m
Boise Air Term. Gowen Fld
Tue 4/21
7:40 am-2:01 pm
1 stop7h 21m
$177
San FranciscoSpokane
SFO - GEG
SFOGEG
San Francisco
Mon 5/4
2:25 pm-10:20 pm
1 stop7h 55m
Spokane
Wed 5/6
5:10 am-9:50 am
1 stop4h 40m
$182
San FranciscoSpokane
SFO - GEG
SFOGEG
San Francisco
Sat 5/2
7:15 am-10:20 pm
1 stop15h 05m
Spokane
Tue 5/5
1:20 pm-3:40 pm
Nonstop2h 20m
$182
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.
SNA-BOI
SAN-GEG
BUR-BOI
SFO-BOI
SFO-GEG
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
SNA-BOI
SAN-GEG
BUR-BOI
SFO-BOI
What is the cheapest month to book a flight from California to Idaho?
Currently, November is the cheapest month in which you can book a flight from California to Idaho (average of $60). Flying from California to Idaho in December is currently the most expensive (average of $142). 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 March 16, 2026.
A simple way to save on the total cost of your ticket is to fly from California to Idaho at noon. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight in the morning.
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 March 14, 2026.
Travelers seeking maximum savings on their California to Idaho flight should consider departing on Friday 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.
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 March 16, 2026.
The most flights from USCA to USID are scheduled on a Monday (21 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (9 on average).
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 March 16, 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.
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
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 March 16, 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 8 airlines flying from California to Idaho
Discover the top 8 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 March 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$49 | Average$389 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$68 | Average$242 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$78 | Average$149 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$95 | Average$197 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$125 | Average$316 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$128 | Average$391 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$147 | Average$316 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$227 | Average$541 | FlexibilityNo cancel fee | On-time71% |