$40+ Cheap flights from Idaho to California
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LAX
Aug 30 — Sep 61
Round-trip
1 adult, Economy
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Find cheap flights from Idaho to California with Cheapflights
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Cheapest flights from Idaho to CaliforniaExplore the most affordable flight options available from Idaho to California. 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 Idaho to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2026.
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:09 am
GEG
- LAS
Nonstop2h 18m
Allegiant Air
Sun 9/277:00 am
LAS
- GEG
Nonstop2h 19m
Allegiant Air
Deal found 7/30![Allegiant Air logo]()
$131
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3010:12 am
GEG
- LAS
Nonstop2h 23m
Allegiant Air
Thu 9/37:00 am
LAS
- GEG
Nonstop2h 19m
Allegiant Air
Deal found 7/30![Allegiant Air logo]()
$133
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm
BOI
- LAS
Nonstop1h 55m
Frontier
Fri 10/212:01 pm
LAS
- BOI
Nonstop1h 56m
Frontier
Deal found 7/28![Frontier logo]()
$135
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2310:12 am
GEG
- LAS
Nonstop2h 23m
Allegiant Air
Thu 8/277:00 am
LAS
- GEG
Nonstop2h 22m
Allegiant Air
Deal found 7/26![Allegiant Air logo]()
$135
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm
BOI
- LAS
Nonstop1h 55m
Frontier
Mon 10/511:00 am
LAS
- BOI
Nonstop1h 55m
Frontier
Deal found 7/26![Frontier logo]()
$136
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 8/317:03 am
GEG
- LAS
1 stop7h 08m
Alaska Airlines
Sat 9/58:02 am
LAS
- GEG
1 stop7h 39m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$137
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/116:56 pm
BOI
- LAS
Nonstop1h 51m
Frontier
Mon 12/143:05 pm
LAS
- BOI
Nonstop1h 56m
Frontier
Deal found 7/30![Frontier logo]()
$138
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:12 am
GEG
- LAS
Nonstop2h 23m
Allegiant Air
Thu 9/37:00 am
LAS
- GEG
Nonstop2h 19m
Allegiant Air
Deal found 7/29![Allegiant Air logo]()
$138
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:27 pm
BOI
- LAS
Nonstop1h 57m
Multiple Airlines
Fri 10/3012:01 pm
LAS
- BOI
Nonstop1h 56m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$139
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/81:30 pm
BOI
- LAS
Nonstop2h 01m
Multiple Airlines
Fri 9/1111:00 am
LAS
- BOI
Nonstop1h 55m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$140
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.
Wed 10/282:27 pm
BOI
- LAS
Nonstop1h 57m
Multiple Airlines
Fri 10/3012:01 pm
LAS
- BOI
Nonstop1h 56m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$141
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:24 pm
BOI
- LAS
1 stop19h 45m
Frontier
Wed 8/2612:57 am
LAS
- BOI
1 stop9h 32m
Frontier
Deal found 7/30![Frontier logo]()
$142
Best flights from Idaho to CaliforniaDiscover carefully curated flight deals from Idaho to California 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 Idaho to California that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2026.
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 9/2912:35 pm
GEG
- SAN
2 stops7h 50m
Southwest
Wed 9/304:10 pm
SAN
- GEG
2 stops5h 35m
Southwest
Deal found 7/30![Southwest logo]()
$147
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/257:07 pm
GEG
- SAN
1 stop4h 40m
Delta
Thu 12/317:10 pm
SAN
- GEG
1 stop4h 32m
Delta
Deal found 7/26![Delta logo]()
$173
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.
Tue 9/157:00 am
BOI
- SMF
Nonstop1h 30m
Alaska Airlines
Sat 9/191:07 pm
SMF
- BOI
Nonstop1h 25m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$177
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.
Sat 10/171:05 pm
GEG
- SFO
Nonstop2h 26m
United Airlines
Mon 10/198:10 am
SFO
- GEG
Nonstop2h 18m
United Airlines
Deal found 7/30![United Airlines logo]()
$207
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.
Sat 8/292:15 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Sun 8/303:30 pm
SAN
- GEG
Nonstop2h 35m
Southwest
Deal found 7/29![Southwest logo]()
$168
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 10/21:25 pm
GEG
- SAN
1 stop4h 41m
Delta
Mon 10/55:01 pm
SAN
- GEG
1 stop6h 28m
Delta
Deal found 7/28![Delta logo]()
$173
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 8/227:20 am
BOI
- SAN
Nonstop2h 21m
Alaska Airlines
Sat 8/296:55 am
SAN
- BOI
1 stop5h 26m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$182
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.
Fri 8/214:20 pm
GEG
- SAN
1 stop5h 50m
Southwest
Mon 8/249:00 am
SAN
- GEG
1 stop6h 00m
Southwest
Deal found 7/27![Southwest logo]()
$173
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/63:05 pm
GEG
- SAN
1 stop7h 44m
Delta
Wed 1/137:10 pm
SAN
- GEG
1 stop4h 32m
Delta
Deal found 7/26![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.
Tue 9/227:40 am
BOI
- LAS
1 stop3h 40m
Southwest
Tue 9/292:15 pm
LAS
- BOI
2 stops7h 05m
Southwest
Deal found 7/30![Southwest logo]()
$174
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.
Wed 9/96:15 am
BOI
- SFO
Nonstop2h 03m
United Airlines
Sun 9/2012:45 pm
SFO
- BOI
Nonstop1h 46m
United Airlines
Deal found 7/26![United Airlines logo]()
$212
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 9/196:47 pm
BOI
- LAX
Nonstop2h 18m
Alaska Airlines
Wed 9/239:26 am
LAX
- BOI
Nonstop2h 07m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$197
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:44 pm
BOI
- SAN
1 stop6h 08m
Delta
Thu 10/15:01 pm
SAN
- BOI
1 stop5h 57m
Delta
Deal found 7/26![Delta logo]()
$182
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.
Wed 8/2611:40 am
BOI
- SAN
1 stop6h 15m
Southwest
Sun 8/307:55 am
SAN
- BOI
1 stop4h 50m
Southwest
Deal found 7/28![Southwest logo]()
$177
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:14 am
BOI
- SFO
Nonstop1h 56m
Alaska Airlines
Thu 9/107:46 pm
SFO
- BOI
Nonstop1h 41m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$198
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 9/186:30 am
BOI
- SAN
Nonstop2h 15m
Southwest
Mon 9/216:20 am
SAN
- BOI
1 stop4h 10m
Southwest
Deal found 7/26![Southwest logo]()
$178
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 9/17:20 am
BOI
- SMF
1 stop5h 55m
Alaska Airlines
Wed 9/91:07 pm
SMF
- BOI
Nonstop1h 25m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$205
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:12 am
BOI
- SAN
1 stop5h 44m
Delta
Tue 9/153:00 pm
SAN
- BOI
1 stop6h 59m
Delta
Deal found 7/26![Delta logo]()
$207
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.
Thu 10/2211:25 am
GEG
- SAN
1 stop6h 05m
Southwest
Thu 10/293:20 pm
SAN
- GEG
2 stops8h 00m
Southwest
Deal found 7/29![Southwest logo]()
$178
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.
Thu 10/297:20 am
BOI
- SJC
Nonstop1h 57m
Alaska Airlines
Sun 11/111:49 am
SJC
- BOI
1 stop7h 14m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$207
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/244:00 pm
BOI
- LAX
Nonstop2h 23m
Delta
Sat 9/2611:44 am
LAX
- BOI
Nonstop2h 00m
Delta
Deal found 7/30![Delta logo]()
$207
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 8/2112:20 pm
GEG
- SAN
Nonstop2h 40m
Southwest
Sat 8/2211:15 am
SAN
- GEG
Nonstop2h 45m
Southwest
Deal found 7/26![Southwest logo]()
$186
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 9/1910:14 am
BOI
- SFO
Nonstop1h 56m
Alaska Airlines
Wed 9/237:46 pm
SFO
- BOI
Nonstop1h 41m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$207
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.
Sat 8/294:00 pm
BOI
- LAX
Nonstop2h 24m
Delta
Sun 8/3011:44 am
LAX
- BOI
Nonstop2h 05m
Delta
Deal found 7/27![Delta logo]()
$207
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.
Tue 9/298:03 am
BOI
- SFO
1 stop6h 00m
Alaska Airlines
Sat 10/36:07 am
SFO
- BOI
1 stop5h 28m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$207
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.
Thu 9/107:00 am
BOI
- LAS
2 stops5h 25m
Southwest
Thu 9/177:30 am
LAS
- BOI
Nonstop1h 45m
Southwest
Deal found 7/27![Southwest logo]()
$192
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/217:07 pm
GEG
- SAN
1 stop4h 40m
Delta
Thu 12/317:10 pm
SAN
- GEG
1 stop4h 32m
Delta
Deal found 7/26![Delta logo]()
$216
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.
Sun 9/136:23 am
BOI
- SAN
1 stop6h 22m
Alaska Airlines
Thu 9/177:15 am
SAN
- BOI
1 stop7h 15m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$207
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.
Fri 8/283:50 pm
BOI
- LAS
Nonstop1h 55m
Southwest
Sat 8/299:20 am
LAS
- BOI
Nonstop1h 55m
Southwest
Deal found 7/29![Southwest logo]()
$192
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 9/246:44 pm
BOI
- SFO
1 stop6h 15m
Delta
Fri 9/257:19 pm
SFO
- BOI
1 stop3h 39m
Delta
Deal found 7/29![Delta logo]()
$217
Last-minute flights from Idaho to CaliforniaDiscover last-minute flight deals from Idaho to California. Data last updated July 31, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho to California. Data last updated July 31, 2026 and is based on user searches.
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:24 pm
BOI
- LAS
1 stop19h 45m
Frontier
Wed 8/2612:57 am
LAS
- BOI
1 stop9h 32m
Frontier
Deal found 7/30![Frontier logo]()
$142
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:12 am
GEG
- LAS
Nonstop2h 23m
Allegiant Air
Sun 8/237:00 am
LAS
- GEG
Nonstop2h 22m
Allegiant Air
Deal found 7/28![Allegiant Air logo]()
$145
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.
Sat 8/227:03 am
GEG
- SAN
Nonstop2h 51m
Alaska Airlines
Wed 8/267:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$157
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2310:12 am
GEG
- LAS
Nonstop2h 23m
Allegiant Air
Thu 8/277:00 am
LAS
- GEG
Nonstop2h 22m
Allegiant Air
Deal found 7/26![Allegiant Air logo]()
$135
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.
Tue 8/257:03 am
GEG
- SAN
Nonstop2h 51m
Alaska Airlines
Sat 8/297:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$145
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 8/254:55 pm
GEG
- SAN
1 stop4h 40m
Southwest
Tue 9/17:05 am
SAN
- GEG
1 stop4h 45m
Southwest
Deal found 7/28![Southwest logo]()
$150
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 8/266:00 am
BOI
- LAS
Nonstop1h 45m
Southwest
Wed 9/28:00 am
LAS
- BOI
Nonstop1h 50m
Southwest
Deal found 7/29![Southwest logo]()
$149
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:12 am
GEG
- LAS
Nonstop2h 23m
Allegiant Air
Thu 9/37:00 am
LAS
- GEG
Nonstop2h 19m
Allegiant Air
Deal found 7/29![Allegiant Air logo]()
$138
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:24 pm
BOI
- LAS
1 stop6h 05m
Frontier
Wed 9/212:57 am
LAS
- BOI
1 stop9h 32m
Frontier
Deal found 7/30![Frontier logo]()
$143
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 8/293:15 pm
GEG
- SAN
1 stop4h 15m
Southwest
Mon 8/312:15 pm
SAN
- GEG
Nonstop2h 40m
Southwest
Deal found 7/30![Southwest logo]()
$147
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3010:12 am
GEG
- LAS
Nonstop2h 23m
Allegiant Air
Thu 9/37:00 am
LAS
- GEG
Nonstop2h 19m
Allegiant Air
Deal found 7/30![Allegiant Air logo]()
$133
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 8/317:03 am
GEG
- LAS
1 stop7h 08m
Alaska Airlines
Sat 9/58:02 am
LAS
- GEG
1 stop7h 39m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$137
One-way flights from Idaho to CaliforniaSearch for one-way flight options from Idaho to California. Find affordable one-way fares based on user searches. Data last updated July 31, 2026.
Search for one-way flight options from Idaho to California. Find affordable one-way fares based on user searches. Data last updated July 31, 2026.
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/272:50 pm
BOI
- LAS
Nonstop1h 55m
Frontier
Deal found 7/29![Frontier logo]()
$40
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/132:50 pm
BOI
- LAS
Nonstop1h 55m
Frontier
Deal found 7/30![Frontier logo]()
$41
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:50 pm
BOI
- LAS
Nonstop1h 55m
Frontier
Deal found 7/26![Frontier logo]()
$44
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:50 pm
BOI
- LAS
Nonstop1h 55m
Frontier
Deal found 7/27![Frontier logo]()
$45
This Kissandfly.com 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:09 am
GEG
- LAS
Nonstop2h 18m
Allegiant Air
Deal found 7/27![Allegiant Air logo]()
$51
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:00 pm
GEG
- LAS
Nonstop2h 23m
Allegiant Air
Deal found 7/29![Allegiant Air logo]()
$52
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/257:20 pm
GEG
- LAS
Nonstop2h 23m
Allegiant Air
Deal found 7/27![Allegiant Air logo]()
$53
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm
BOI
- LAS
Nonstop1h 55m
Frontier
Deal found 7/29![Frontier logo]()
$54
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2710:09 am
GEG
- LAS
Nonstop2h 18m
Allegiant Air
Deal found 7/28![Allegiant Air logo]()
$56
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:50 pm
BOI
- LAS
Nonstop1h 55m
Frontier
Deal found 7/30![Frontier logo]()
$59
This 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:31 am
GEG
- LAS
1 stop7h 01m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$59
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 8/296:49 pm
BOI
- SAN
Nonstop2h 30m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$59
Find flight deals from Idaho to California
Keep the following information in mind while searching for Idaho to California flight deals. Data was last updated July 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $131 (CheapOair) |
One-way from | $40 (Frontier) |
Popular in | July |
Cheapest in | October |
Average price | $393 |
Good round-trip deal | $172 or less |
Good one-way deal | $78 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho to California 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 Idaho to California that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SpokaneSan Diego
GEG - SAN
GEGSAN
Spokane
Tue 9/29
12:35 pm-8:25 pm
2 stops7h 50m
San Diego
Wed 9/30
4:10 pm-9:45 pm
2 stops5h 35m
$147
SpokaneSan Diego
GEG - SAN
GEGSAN
Spokane
Sat 8/29
2:15 pm-4:55 pm
Nonstop2h 40m
San Diego
Sun 8/30
3:30 pm-6:05 pm
Nonstop2h 35m
$168
SpokaneSan Diego
GEG - SAN
GEGSAN
Spokane
Fri 12/25
7:07 pm-11:47 pm
1 stop4h 40m
San Diego
Thu 12/31
7:10 pm-11:42 pm
1 stop4h 32m
$173
SpokaneSan Diego
GEG - SAN
GEGSAN
Spokane
Fri 10/2
1:25 pm-6:06 pm
1 stop4h 41m
San Diego
Mon 10/5
5:01 pm-11:29 pm
1 stop6h 28m
$173
SpokaneSan Diego
GEG - SAN
GEGSAN
Spokane
Fri 8/21
4:20 pm-10:10 pm
1 stop5h 50m
San Diego
Mon 8/24
9:00 am-3:00 pm
1 stop6h 00m
$173
SpokaneSan Diego
GEG - SAN
GEGSAN
Spokane
Wed 1/6
3:05 pm-10:49 pm
1 stop7h 44m
San Diego
Wed 1/13
7:10 pm-11:42 pm
1 stop4h 32m
$173
BoiseLas Vegas
BOI - LAS
BOILAS
Boise Air Term. Gowen Fld
Tue 9/22
7:40 am-10:20 am
1 stop3h 40m
Las Vegas Harry Reid Intl
Tue 9/29
2:15 pm-10:20 pm
2 stops7h 05m
$174
Quickest round-trip
BoiseSacramento
BOI - SMF
BOISMF
Boise Air Term. Gowen Fld
Tue 9/15
7:00 am-7:30 am
Nonstop1h 30m
Sacramento Intl
Sat 9/19
1:07 pm-3:32 pm
Nonstop1h 25m
$177
BoiseSan Diego
BOI - SAN
BOISAN
Boise Air Term. Gowen Fld
Wed 8/26
11:40 am-4:55 pm
1 stop6h 15m
San Diego
Sun 8/30
7:55 am-1:45 pm
1 stop4h 50m
$177
BoiseSan Diego
BOI - SAN
BOISAN
Boise Air Term. Gowen Fld
Fri 9/18
6:30 am-7:45 am
Nonstop2h 15m
San Diego
Mon 9/21
6:20 am-11:30 am
1 stop4h 10m
$178
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Idaho to California
Have a flexible travel schedule? Discover the best time to fly to California from Idaho with our price prediction graph.
GEG-LAS
BOI-LAS
GEG-SAN
BOI-SMF
GEG-SFO
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Idaho to California
USID-USCA
GEG-LAS
BOI-LAS
GEG-SAN
BOI-SMF
What is the cheapest month to book a flight from Idaho to California?
Currently, October is the cheapest month in which you can book a flight from Idaho to California (average of $245). Flying from Idaho to California in March is currently the most expensive (average of $375). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ID to CA?
Find hourly flight availability from Idaho to California. 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.
When flying from Idaho to California, 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 17% versus a flight in the morning.
Weekly flight availability from Idaho to California
Explore weekly flight availability from Idaho to California. 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 USID to USCA are scheduled on a Thursday (28 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Idaho to California?
Airfare is below average for this route at the moment.
Idaho to California flights typically cost between $197 and $347 in September.The cheapest round-trip price found within the last 5 days was $158 on Frontier (Sep 10-Sep 17).
How far ahead should I book a flight from Idaho to California?
Booking 68 days in advance of your planned departure date is, on average, the best time to get cheap flights from Idaho to California. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from Idaho to California?
Use this chart to determine the cheapest time to fly round-trip from Idaho to California. Price data was last updated on July 25, 2026.
Travelers seeking maximum savings on their Idaho to California flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing California
Get insights into the airlines that provide service to California. 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 California. Reviews last updated July 31, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta from Idaho to California by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Idaho to California. 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 Idaho to California
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to California by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho to California by cabin class
Find flights from Idaho to California, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Idaho and California flights
Browse other Idaho and California 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 California
Find the right flight back to Idaho after your stay in California
Idaho to California flights
Consider these flights traveling from Idaho to California.
Top 9 airlines flying from Idaho to California
Discover the top 9 airlines that operate flights from Idaho to California. 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$68 | Average$212 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$78 | Average$382 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$108 | Average$226 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$108 | Average$336 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$137 | Average$390 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$147 | Average$317 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$151 | Average$225 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$170 | Average$243 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$277 | Average$534 | FlexibilityNo cancel fee | On-time71% |