$69+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BOI
Jul 13 — Jul 201
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 June 13, 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 June 13, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:57 pm
SAN
- GEG
Nonstop2h 54m
Alaska Airlines
Tue 10/137:16 am
GEG
- SAN
Nonstop2h 55m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$143
This CheapOair deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:20 pm
BUR
- BOI
Nonstop2h 09m
Alaska Airlines
Tue 10/2710:12 am
BOI
- BUR
Nonstop2h 11m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$150
This Alaska Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 9/154:58 pm
SAN
- BOI
Nonstop2h 22m
Alaska Airlines
Wed 9/166:49 pm
BOI
- SAN
Nonstop2h 30m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$155
This Priceline deal was found by Cheapflights users on 6/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/75:06 pm
SAN
- BOI
Nonstop2h 19m
Alaska Airlines
Tue 7/148:00 pm
BOI
- SAN
Nonstop2h 22m
Alaska Airlines
Deal found 6/13![Alaska Airlines logo]()
$157
This Expedia deal was found by Cheapflights users on 6/11. 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 8/58:22 pm
SAN
- GEG
Nonstop2h 45m
Alaska Airlines
Mon 8/108:15 am
GEG
- SAN
Nonstop2h 48m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$157
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1912:54 pm
SAN
- GEG
1 stop6h 45m
American Airlines
Tue 9/221:45 pm
GEG
- SAN
1 stop4h 31m
American Airlines
Deal found 6/10![American Airlines logo]()
$162
This Southwest deal was found by Cheapflights users on 6/11. 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 9/18:45 am
SAN
- BOI
Nonstop2h 15m
Southwest
Tue 9/83:40 pm
BOI
- SAN
1 stop5h 00m
Southwest
Deal found 6/11![Southwest logo]()
$165
This Booking.com deal was found by Cheapflights users on 6/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:06 pm
BUR
- BOI
Nonstop2h 10m
Alaska Airlines
Sat 9/129:49 am
BOI
- BUR
Nonstop2h 14m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$165
This Southwest deal was found by Cheapflights users on 6/12. 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 7/146:00 pm
SAN
- BOI
1 stop5h 35m
Southwest
Tue 7/283:15 pm
BOI
- SAN
Nonstop2h 10m
Southwest
Deal found 6/12![Southwest logo]()
$167
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/194:35 pm
SAN
- BOI
Nonstop2h 10m
Southwest
Thu 8/203:45 pm
BOI
- SAN
Nonstop2h 15m
Southwest
Deal found 6/9![Southwest logo]()
$168
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/267:00 am
BUR
- BOI
1 stop4h 14m
Delta
Wed 9/1611:10 am
BOI
- BUR
1 stop5h 59m
Delta
Deal found 6/9![Delta logo]()
$169
This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/234:58 pm
SAN
- BOI
Nonstop2h 22m
Alaska Airlines
Mon 9/286:49 pm
BOI
- SAN
Nonstop2h 30m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$170
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 June 13, 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 June 13, 2026.
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 7/99:26 am
SAN
- BOI
1 stop6h 18m
United Airlines
Mon 7/137:05 pm
BOI
- SAN
1 stop4h 44m
United Airlines
Deal found 6/11![United Airlines logo]()
$189
This Alaska Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 9/910:45 am
LAX
- GEG
Nonstop2h 38m
Alaska Airlines
Sun 9/137:00 am
GEG
- LAX
Nonstop2h 52m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 6/11. 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 8/181:50 pm
LAX
- GEG
2 stops7h 50m
Southwest
Tue 8/255:45 am
GEG
- LAX
1 stop5h 45m
Southwest
Deal found 6/11![Southwest logo]()
$212
This Delta deal was found by Cheapflights users on 6/11. 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 9/911:05 am
SAN
- GEG
1 stop7h 42m
Delta
Sun 9/135:20 am
GEG
- SAN
1 stop4h 51m
Delta
Deal found 6/11![Delta logo]()
$214
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/104:09 pm
SAN
- BOI
1 stop6h 46m
United Airlines
Mon 7/137:05 pm
BOI
- SAN
1 stop4h 44m
United Airlines
Deal found 6/11![United Airlines logo]()
$189
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 9/57:59 pm
SAN
- GEG
Nonstop2h 50m
Alaska Airlines
Wed 9/96:00 am
GEG
- SAN
Nonstop2h 59m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$207
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 9/116:20 am
SAN
- BOI
1 stop4h 10m
Southwest
Sat 9/1211:35 am
BOI
- SAN
1 stop5h 15m
Southwest
Deal found 6/8![Southwest logo]()
$216
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:11 pm
SAN
- GEG
1 stop5h 24m
Delta
Wed 9/95:20 am
GEG
- SAN
1 stop7h 17m
Delta
Deal found 6/12![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 8/127:25 pm
SFO
- BOI
Nonstop1h 42m
Alaska Airlines
Fri 8/148:03 am
BOI
- SFO
1 stop7h 48m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$215
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/309:05 pm
SAN
- BOI
Nonstop2h 20m
Southwest
Sun 8/307:50 pm
BOI
- SAN
Nonstop2h 15m
Southwest
Deal found 6/8![Southwest logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 9/129:26 am
LAX
- BOI
Nonstop2h 07m
Alaska Airlines
Wed 9/164:20 pm
BOI
- LAX
1 stop5h 31m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 6/12. 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 8/197:00 am
BUR
- BOI
1 stop4h 14m
Delta
Mon 8/246:45 pm
BOI
- BUR
1 stop4h 03m
Delta
Deal found 6/12![Delta logo]()
$243
This Southwest deal was found by Cheapflights users on 6/11. 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 11/31:15 pm
LAX
- BOI
2 stops7h 15m
Southwest
Tue 11/101:35 pm
BOI
- LAX
2 stops5h 50m
Southwest
Deal found 6/11![Southwest logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/217:46 pm
SFO
- BOI
Nonstop1h 41m
Alaska Airlines
Mon 8/2410:14 am
BOI
- SFO
Nonstop1h 56m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$219
This Delta deal was found by Cheapflights users on 6/11. 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.
Thu 9/1010:00 am
SAN
- BOI
1 stop4h 01m
Delta
Mon 9/144:00 pm
BOI
- SAN
1 stop4h 16m
Delta
Deal found 6/11![Delta logo]()
$249
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 12/99:00 am
ONT
- GEG
1 stop4h 35m
Southwest
Tue 12/156:40 am
GEG
- ONT
1 stop8h 00m
Southwest
Deal found 6/8![Southwest logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 9/87:46 pm
SFO
- BOI
Nonstop1h 41m
Alaska Airlines
Sun 9/136:49 pm
BOI
- SFO
1 stop5h 23m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$219
This Delta deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:05 am
BUR
- BOI
1 stop4h 12m
Delta
Sun 10/256:00 am
BOI
- BUR
1 stop4h 18m
Delta
Deal found 6/13![Delta logo]()
$249
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:57 pm
LAX
- BOI
Nonstop2h 08m
United Airlines
Sun 7/57:00 am
BOI
- LAX
Nonstop2h 33m
United Airlines
Deal found 6/9![United Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/54:10 pm
SAN
- GEG
2 stops5h 30m
Southwest
Mon 8/105:35 pm
GEG
- SAN
1 stop4h 30m
Southwest
Deal found 6/9![Southwest logo]()
$238
This Alaska Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 9/104:50 pm
LAX
- GEG
1 stop7h 09m
Alaska Airlines
Sun 9/137:00 am
GEG
- LAX
Nonstop2h 52m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 6/12. 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 7/2211:06 am
SAN
- GEG
1 stop8h 09m
Delta
Wed 8/55:15 am
GEG
- SAN
1 stop4h 56m
Delta
Deal found 6/12![Delta logo]()
$253
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:15 am
SFO
- BOI
Nonstop1h 49m
United Airlines
Fri 8/147:05 pm
BOI
- SFO
Nonstop1h 53m
United Airlines
Deal found 6/10![United Airlines logo]()
$314
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/51:45 pm
SAN
- GEG
2 stops8h 20m
Southwest
Thu 8/135:35 pm
GEG
- SAN
1 stop4h 30m
Southwest
Deal found 6/8![Southwest logo]()
$238
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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.
Fri 9/118:30 am
LAX
- BOI
1 stop6h 00m
Alaska Airlines
Sun 9/137:05 am
BOI
- LAX
Nonstop2h 25m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:01 pm
SAN
- BOI
1 stop3h 59m
Delta
Sun 8/306:00 am
BOI
- SAN
1 stop3h 41m
Delta
Deal found 6/12![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” 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 8/57:45 am
ONT
- GEG
2 stops8h 30m
Southwest
Tue 8/115:45 am
GEG
- ONT
1 stop4h 30m
Southwest
Deal found 6/8![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:35 am
LAX
- JAC
Nonstop2h 20m
United Airlines
Sat 9/128:05 am
JAC
- LAX
Nonstop2h 29m
United Airlines
Deal found 6/10![United Airlines logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 8/107:55 am
SFO
- BOI
1 stop4h 51m
Alaska Airlines
Sat 8/1510:52 am
BOI
- SFO
Nonstop1h 57m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 6/12. 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.
Thu 8/66:30 am
SAN
- BOI
Nonstop2h 20m
Southwest
Mon 8/103:45 pm
BOI
- SAN
Nonstop2h 15m
Southwest
Deal found 6/12![Southwest logo]()
$245
Last-minute flights from California to IdahoDiscover last-minute flight deals from California to Idaho. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from California to Idaho. Data last updated June 13, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 6/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/75:06 pm
SAN
- BOI
Nonstop2h 19m
Alaska Airlines
Tue 7/148:00 pm
BOI
- SAN
Nonstop2h 22m
Alaska Airlines
Deal found 6/13![Alaska Airlines logo]()
$157
This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/710:30 am
SAN
- BOI
Nonstop2h 16m
Alaska Airlines
Sat 7/117:57 am
BOI
- SAN
Nonstop2h 27m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:40 am
SAN
- BOI
2 stops6h 45m
Southwest
Tue 7/145:30 am
BOI
- SAN
1 stop4h 45m
Southwest
Deal found 6/13![Southwest logo]()
$182
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:26 am
SAN
- BOI
1 stop6h 18m
United Airlines
Tue 7/147:05 pm
BOI
- SAN
1 stop6h 26m
United Airlines
Deal found 6/13![United Airlines logo]()
$183
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/104:09 pm
SAN
- BOI
1 stop6h 46m
United Airlines
Mon 7/137:05 pm
BOI
- SAN
1 stop4h 44m
United Airlines
Deal found 6/11![United Airlines logo]()
$189
This Southwest deal was found by Cheapflights users on 6/12. 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 7/118:20 pm
SAN
- BOI
Nonstop2h 15m
Southwest
Tue 7/146:00 am
BOI
- SAN
1 stop4h 10m
Southwest
Deal found 6/12![Southwest logo]()
$187
This Southwest deal was found by Cheapflights users on 6/12. 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 7/146:00 pm
SAN
- BOI
1 stop5h 35m
Southwest
Tue 7/283:15 pm
BOI
- SAN
Nonstop2h 10m
Southwest
Deal found 6/12![Southwest logo]()
$167
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/149:41 am
SAN
- BOI
1 stop6h 08m
American Airlines
Tue 8/45:36 pm
BOI
- SAN
1 stop4h 58m
American Airlines
Deal found 6/9![American Airlines logo]()
$195
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:05 am
SAN
- BOI
1 stop4h 25m
Southwest
Thu 8/203:45 pm
BOI
- SAN
Nonstop2h 15m
Southwest
Deal found 6/10![Southwest logo]()
$201
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:59 pm
SFO
- BOI
Nonstop1h 56m
United Airlines
Tue 8/47:05 pm
BOI
- SFO
Nonstop1h 53m
United Airlines
Deal found 6/9![United Airlines logo]()
$184
This Expedia deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 7/286:00 am
SFO
- BOI
1 stop5h 29m
Multiple Airlines
Tue 8/410:52 am
BOI
- SFO
Nonstop1h 57m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$186
This Trip.com deal was found by Cheapflights users on 6/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:03 am
SFO
- BOI
1 stop4h 44m
Alaska Airlines
Tue 8/410:52 am
BOI
- SFO
Nonstop1h 57m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$188
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 June 13, 2026.
Search for one-way flight options from California to Idaho. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This Trip.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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.
Tue 8/47:25 pm
SFO
- BOI
Nonstop1h 42m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$69
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1112:45 pm
SFO
- BOI
Nonstop1h 46m
United Airlines
Deal found 6/10![United Airlines logo]()
$71
This Alaska Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/48:22 pm
SAN
- GEG
Nonstop2h 45m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$72
This Booking.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:00 am
BUR
- BOI
Nonstop2h 09m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$75
This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/510:30 am
SAN
- BOI
Nonstop2h 16m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$78
This Southwest deal was found by Cheapflights users on 6/12. 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 7/810:15 am
SAN
- BOI
Nonstop2h 10m
Southwest
Deal found 6/12![Southwest logo]()
$79
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:25 pm
SFO
- BOI
1 stop3h 34m
Delta
Deal found 6/10![Delta logo]()
$81
This Delta deal was found by Cheapflights users on 6/12. 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.
Tue 8/1810:40 am
SFO
- GEG
1 stop4h 39m
Delta
Deal found 6/12![Delta logo]()
$81
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/44:23 pm
SAN
- GEG
1 stop6h 43m
American Airlines
Deal found 6/11![American Airlines logo]()
$81
This CheapOair deal was found by Cheapflights users on 6/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/612:29 pm
SFO
- GEG
Nonstop2h 07m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$84
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” 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 8/85:10 pm
SFO
- BOI
Nonstop1h 55m
United Airlines
Deal found 6/9![United Airlines logo]()
$85
This Delta deal was found by Cheapflights users on 6/12. 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.
Tue 8/114:55 pm
BUR
- BOI
1 stop6h 04m
Delta
Deal found 6/12![Delta logo]()
$85
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 June 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $143 (Alaska Airlines) |
One-way from | $69 (Trip.com) |
Popular in | February |
Cheapest in | April |
Average price | $339 |
Good round-trip deal | $186 or less |
Good one-way deal | $73 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 June 13, 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 DiegoBoise
SAN - BOI
SANBOI
San Diego
Thu 7/9
9:26 am-4:44 pm
1 stop6h 18m
Boise Air Term. Gowen Fld
Mon 7/13
7:05 pm-10:49 pm
1 stop4h 44m
$189
San DiegoBoise
SAN - BOI
SANBOI
San Diego
Fri 7/10
4:09 pm-11:55 pm
1 stop6h 46m
Boise Air Term. Gowen Fld
Mon 7/13
7:05 pm-10:49 pm
1 stop4h 44m
$189
Los AngelesSpokane
LAX - GEG
LAXGEG
Los Angeles Los Angeles
Wed 9/9
10:45 am-1:23 pm
Nonstop2h 38m
Spokane
Sun 9/13
7:00 am-9:52 am
Nonstop2h 52m
$197
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Sat 9/5
7:59 pm-10:49 pm
Nonstop2h 50m
Spokane
Wed 9/9
6:00 am-8:59 am
Nonstop2h 59m
$207
Los AngelesSpokane
LAX - GEG
LAXGEG
Los Angeles Los Angeles
Tue 8/18
1:50 pm-9:40 pm
2 stops7h 50m
Spokane
Tue 8/25
5:45 am-11:30 am
1 stop5h 45m
$212
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Wed 9/9
11:05 am-6:47 pm
1 stop7h 42m
Spokane
Sun 9/13
5:20 am-10:11 am
1 stop4h 51m
$214
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Wed 8/12
7:25 pm-10:07 pm
Nonstop1h 42m
Boise Air Term. Gowen Fld
Fri 8/14
8:03 am-2:51 pm
1 stop7h 48m
$215
San DiegoBoise
SAN - BOI
SANBOI
San Diego
Fri 9/11
6:20 am-11:30 am
1 stop4h 10m
Boise Air Term. Gowen Fld
Sat 9/12
11:35 am-3:50 pm
1 stop5h 15m
$216
San DiegoSpokane
SAN - GEG
SANGEG
San Diego
Sat 9/5
4:11 pm-9:35 pm
1 stop5h 24m
Spokane
Wed 9/9
5:20 am-12:37 pm
1 stop7h 17m
$217
San DiegoBoise
SAN - BOI
SANBOI
San Diego
Thu 7/30
9:05 pm-12:25 am
Nonstop2h 20m
Boise Air Term. Gowen Fld
Sun 8/30
7:50 pm-9:05 pm
Nonstop2h 15m
$217
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.
SAN-GEG
SFO-BOI
SFO-GEG
SAN-BOI
BUR-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
SAN-GEG
SFO-BOI
SFO-GEG
SAN-BOI
What is the cheapest month to book a flight from California to Idaho?
Currently, October is the cheapest month in which you can book a flight from California to Idaho (average of $306). Flying from California to Idaho in March is currently the most expensive (average of $451). 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 June 13, 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 June 13, 2026.
The most flights from USCA to USID are scheduled on a Thursday (30 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 on average).
How much does it cost to fly round-trip from California to Idaho?
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 June 13, 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 June 13, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Southwest, 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.
Food
7.0
Comfort
7.8
Overall
7.9
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Comfort
7.8
Overall
7.9
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Comfort
7.8
Overall
7.9
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Comfort
7.8
Overall
7.9
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Comfort
7.8
Overall
7.9
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Comfort
7.8
Overall
7.9
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
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
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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 June 13, 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 June 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$68 | Average$230 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$95 | Average$212 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$98 | Average$212 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$106 | Average$392 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$117 | Average$347 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$119 | Average$431 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$137 | Average$333 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$357 | Average$567 | FlexibilityNo cancel fee | On-time71% |