$66+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BOI
Feb 27 — Mar 61
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from California to Idaho with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from California to Idaho
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 January 28, 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 January 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:31 pm
SFO
- BOI
Nonstop1h 44m
Hawaiian Airlines
Thu 3/197:40 am
BOI
- SFO
Nonstop2h 00m
Hawaiian Airlines
Deal found 1/26![Hawaiian Airlines logo]()
$151
This Southwest deal was found by Cheapflights users on 1/27. 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.
Mon 2/239:45 am
SJC
- BOI
Nonstop1h 35m
Southwest
Thu 2/262:55 pm
BOI
- SJC
Nonstop1h 50m
Southwest
Deal found 1/27![Southwest logo]()
$157
This United Airlines deal was found by Cheapflights users on 1/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/108:25 am
SFO
- BOI
Nonstop1h 52m
United Airlines
Tue 3/106:55 pm
BOI
- SFO
Nonstop2h 03m
United Airlines
Deal found 1/27![United Airlines logo]()
$157
This Expedia deal was found by Cheapflights users on 1/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/248:18 pm
BUR
- BOI
Nonstop2h 17m
Alaska Airlines
Tue 3/310:20 am
BOI
- BUR
Nonstop2h 16m
Alaska Airlines
Deal found 1/27![Alaska Airlines logo]()
$157
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Fri 3/68:18 pm
BUR
- BOI
Nonstop2h 17m
Alaska Airlines
Tue 3/1010:20 am
BOI
- BUR
Nonstop2h 16m
Alaska Airlines
Deal found 1/26![Alaska Airlines logo]()
$158
This Trip.com deal was found by Cheapflights users on 1/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:31 pm
SFO
- BOI
Nonstop1h 44m
Alaska Airlines
Thu 3/195:00 am
BOI
- SFO
1 stop6h 31m
Alaska Airlines
Deal found 1/26![Alaska Airlines logo]()
$160
This Kissandfly.com deal was found by Cheapflights users on 1/26. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/278:46 pm
SFO
- BOI
Nonstop1h 52m
Alaska Airlines
Mon 3/21:25 pm
BOI
- SFO
Nonstop2h 01m
Alaska Airlines
Deal found 1/26![Alaska Airlines logo]()
$165
This Alaska Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/255:01 pm
SJC
- BOI
Nonstop1h 39m
Alaska Airlines
Tue 3/31:00 pm
BOI
- SJC
1 stop5h 09m
Alaska Airlines
Deal found 1/26![Alaska Airlines logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/237:31 pm
SFO
- BOI
Nonstop1h 44m
Alaska Airlines
Mon 3/26:00 pm
BOI
- SFO
1 stop4h 55m
Alaska Airlines
Deal found 1/25![Alaska Airlines logo]()
$167
This United Airlines deal was found by Cheapflights users on 1/26. 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 2/259:29 am
SFO
- GEG
Nonstop2h 16m
United Airlines
Wed 3/47:00 am
GEG
- SFO
Nonstop2h 28m
United Airlines
Deal found 1/26![United Airlines logo]()
$167
This CheapOair deal was found by Cheapflights users on 1/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:45 pm
LAX
- BOI
Nonstop2h 16m
Alaska Airlines
Sun 4/268:11 am
BOI
- LAX
Nonstop2h 24m
Alaska Airlines
Deal found 1/27![Alaska Airlines logo]()
$167
This CheapOair deal was found by Cheapflights users on 1/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/278:18 pm
BUR
- BOI
Nonstop2h 17m
Alaska Airlines
Sun 3/16:28 am
BOI
- BUR
1 stop5h 33m
Alaska Airlines
Deal found 1/27![Alaska Airlines logo]()
$169
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 January 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $151 (Kiwi.com) |
One-way from | $66 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
Average price | $272 |
Good round-trip deal | $157 or less |
Good one-way deal | $65 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 January 28, 2026.
Use the filters below to find and compare flights from California to Idaho that are best for you.
Fly from
California
Fly to
Idaho
Route
Depart
Return
Price
San JoseBoise
SJC - BOI
SJCBOI
San Jose
Fri 5/1
7:41 pm-10:24 pm
Nonstop1h 43m
Boise Air Term. Gowen Fld
Sun 5/3
10:22 am-11:17 am
Nonstop1h 55m
$157
San JoseBoise
SJC - BOI
SJCBOI
San Jose
Thu 2/26
11:35 am-2:15 pm
Nonstop1h 40m
Boise Air Term. Gowen Fld
Tue 3/3
4:00 pm-4:50 pm
Nonstop1h 50m
$157
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Tue 3/10
4:20 pm-7:12 pm
Nonstop1h 52m
Boise Air Term. Gowen Fld
Tue 3/31
4:05 pm-5:10 pm
Nonstop2h 05m
$157
San JoseBoise
SJC - BOI
SJCBOI
San Jose
Fri 4/17
7:22 pm-10:07 pm
Nonstop1h 45m
Boise Air Term. Gowen Fld
Sun 4/19
9:02 am-10:02 am
Nonstop2h 00m
$157
San JoseBoise
SJC - BOI
SJCBOI
San Jose
Mon 2/23
9:45 am-12:20 pm
Nonstop1h 35m
Boise Air Term. Gowen Fld
Fri 2/27
2:55 pm-3:45 pm
Nonstop1h 50m
$157
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Fri 3/6
9:05 pm-11:57 pm
Nonstop1h 52m
Boise Air Term. Gowen Fld
Mon 3/9
10:49 am-11:55 am
Nonstop2h 06m
$157
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Mon 4/27
6:25 pm-9:15 pm
Nonstop1h 50m
Boise Air Term. Gowen Fld
Sat 5/2
8:20 am-9:22 am
Nonstop2h 02m
$157
BurbankBoise
BUR - BOI
BURBOI
Burbank Bob Hope
Wed 4/29
10:25 am-1:42 pm
Nonstop2h 17m
Boise Air Term. Gowen Fld
Sat 5/2
1:33 pm-2:43 pm
Nonstop2h 10m
$157
San FranciscoBoise
SFO - BOI
SFOBOI
San Francisco
Tue 3/10
8:42 am-3:08 pm
1 stop5h 26m
Boise Air Term. Gowen Fld
Tue 3/31
7:40 am-8:40 am
Nonstop2h 00m
$167
Los AngelesBoise
LAX - BOI
LAXBOI
Los Angeles
Wed 4/15
4:55 pm-8:13 pm
Nonstop2h 18m
Boise Air Term. Gowen Fld
Wed 4/22
12:30 pm-5:51 pm
1 stop6h 21m
$167
Showing 1-10 of 60 results
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.
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
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 $141). 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 January 28, 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 10% 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 January 24, 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. Monday at noon 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 January 28, 2026.
The most flights from USCA to USID are scheduled on a Tuesday (23 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (19 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 January 28, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Crew
8.5
Comfort
7.8
Food
7.1
Boarding
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Crew
8.5
Comfort
7.8
Food
7.1
Boarding
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Crew
8.5
Comfort
7.8
Food
7.1
Boarding
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Crew
8.5
Comfort
7.8
Food
7.1
Boarding
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Crew
8.5
Comfort
7.8
Food
7.1
Boarding
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Crew
8.5
Comfort
7.8
Food
7.1
Boarding
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
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.
Alternative routes for California to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
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 January 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$49 | Average$387 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$68 | Average$169 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$68 | Average$258 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$98 | Average$201 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$132 | Average$385 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$132 | Average$321 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$147 | Average$316 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$227 | Average$536 | FlexibilityNo cancel fee | On-time71% |