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$58+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BOI
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from California to Idaho

Cheapest flights from California to Idaho
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 October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:10 pmSAN - BOI
1 stop14h 39mFrontier
Sat 12/2012:54 pmBOI - SAN
1 stop7h 21mFrontier
Deal found 10/29$128
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:25 amSAN - BOI
1 stop28h 24mFrontier
Fri 12/512:44 pmBOI - SAN
1 stop7h 31mFrontier
Deal found 10/29$130
This Mytrip deal was found by Cheapflights users on 10/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:25 amSAN - BOI
1 stop28h 24mFrontier
Sun 12/712:44 pmBOI - SAN
1 stop12h 15mFrontier
Deal found 10/30$133
This Southwest deal was found by Cheapflights users on 10/30. 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.
Wed 12/37:50 pmSMF - BOI
Nonstop1h 25mSouthwest
Tue 12/95:30 pmBOI - SMF
Nonstop1h 30mSouthwest
Deal found 10/30$137
This Alaska Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/32:50 pmSMF - BOI
1 stop8h 05mAlaska Airlines
Sat 12/67:00 amBOI - SMF
Nonstop1h 39mAlaska Airlines
Deal found 10/29$147
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/49:10 amSAN - BOI
Nonstop2h 32mHawaiian Airlines
Mon 12/87:00 amBOI - SAN
Nonstop2h 29mHawaiian Airlines
Deal found 10/29$149
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:40 pmBUR - BOI
Nonstop2h 15mHawaiian Airlines
Mon 12/81:29 pmBOI - BUR
Nonstop2h 14mHawaiian Airlines
Deal found 10/29$149
This Kissandfly.com deal was found by Cheapflights users on 10/29. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:14 pmSFO - BOI
Nonstop1h 44mAlaska Airlines
Mon 12/88:25 amBOI - SFO
Nonstop2h 15mAlaska Airlines
Deal found 10/29$151
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:41 amSAN - BOI
1 stop28h 02mFrontier
Sun 11/1612:28 pmBOI - SAN
1 stop23h 49mFrontier
Deal found 10/28$152
This Alaska Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/32:50 pmSMF - BOI
1 stop8h 05mAlaska Airlines
Tue 12/98:55 amBOI - SMF
1 stop5h 49mAlaska Airlines
Deal found 10/30$156
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/288:29 amSFO - GEG
Nonstop2h 17mUnited Airlines
Sat 12/67:00 amGEG - SFO
Nonstop2h 44mUnited Airlines
Deal found 10/29$156
This Expedia deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/28:29 pmSAN - BOI
Nonstop2h 26mMultiple Airlines
Thu 12/412:44 pmBOI - SAN
1 stop7h 31mMultiple Airlines
Deal found 10/30$156

Cheap flight deals from California to Idaho

Keep the following information in mind while searching for California to Idaho flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$128
(Kiwi.com)

One-way from

$58
(Netflights)

Popular in

December

Cheapest in

February

Average price

$294

Good round-trip deal

$157 or less

Good one-way deal

$78 or less
Provider with most accurate pricing for Los Angeles-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Boise Air Term. Gowen Fld flights.
Search Deals
From California to Idaho
Search Deals
One-way flight from California to Idaho
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from California to Idaho.
Search Deals
Price to beat on a one-way flight from California to Idaho.
Search Deals

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 October 30, 2025.
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

SacramentoBoise

SMF - BOI

SMFBOI

Sacramento Intl

Tue 3/3

7:00 am-9:26 am

Nonstop1h 26m

Boise Air Term. Gowen Fld

Wed 3/4

7:00 am-7:30 am

Nonstop1h 30m

$137

SacramentoBoise

SMF - BOI

SMFBOI

Sacramento Intl

Sat 12/6

6:30 am-1:35 pm

1 stop6h 05m

Boise Air Term. Gowen Fld

Mon 12/8

5:30 pm-6:00 pm

Nonstop1h 30m

$157

San FranciscoBoise

SFO - BOI

SFOBOI

San Francisco

Sat 12/6

7:14 pm-9:58 pm

Nonstop1h 44m

Boise Air Term. Gowen Fld

Wed 12/10

8:25 am-9:40 am

Nonstop2h 15m

$157

SacramentoBoise

SMF - BOI

SMFBOI

Sacramento Intl

Fri 12/5

7:50 pm-10:15 pm

Nonstop1h 25m

Boise Air Term. Gowen Fld

Sun 12/7

7:40 pm-8:10 pm

Nonstop1h 30m

$157

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Tue 12/2

8:29 pm-11:55 pm

Nonstop2h 26m

Boise Air Term. Gowen Fld

Thu 12/4

7:00 am-8:29 am

Nonstop2h 29m

$157

SacramentoBoise

SMF - BOI

SMFBOI

Sacramento Intl

Fri 1/16

2:59 pm-8:04 pm

1 stop4h 05m

Boise Air Term. Gowen Fld

Sun 1/25

7:00 am-7:39 am

Nonstop1h 39m

$167

SacramentoBoise

SMF - BOI

SMFBOI

Sacramento Intl

Fri 12/5

2:40 pm-11:10 pm

1 stop7h 30m

Boise Air Term. Gowen Fld

Fri 12/12

7:05 am-7:45 am

Nonstop1h 40m

$167

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Tue 1/20

11:03 am-7:10 pm

1 stop7h 07m

Boise Air Term. Gowen Fld

Thu 1/22

7:55 pm-9:24 pm

Nonstop2h 29m

$167

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Wed 12/3

9:10 am-12:42 pm

Nonstop2h 32m

Boise Air Term. Gowen Fld

Sun 12/7

7:46 pm-9:14 pm

Nonstop2h 28m

$167

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Thu 12/11

3:29 pm-10:05 pm

1 stop5h 36m

Boise Air Term. Gowen Fld

Sat 12/13

7:00 am-8:29 am

Nonstop2h 29m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 60 results
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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 October 30, 2025.

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 18% 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 October 26, 2025.

Travelers seeking maximum savings on their California to Idaho flight should consider departing on Wednesday mornings when fares are most often at their lowest. Saturday afternoons 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 October 30, 2025.
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.
Alaska Airlines
8.0
Very good
11,217 reviews

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,217 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,243 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
7.9
Good
7,998 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,998 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Allegiant Air
7.2
Good
694 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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.

  • How popular is this California to Idaho flight route?

    The California to Idaho flight path was viewed by 47 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from California to Idaho?

    There are many flights that can get you from California to Idaho in 1h 26m. Fly via Hawaiian Airlines, Southwest, or Alaska Airlines to get the fastest option. The distance between California and Idaho is about 437 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from California to Idaho one-way?

    $59 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Alaska Airlines and Southwest, with prices starting from $68 and $69, respectively.

  • Can I find deals for flights from California to Idaho that include hotel bookings?

    Yes. In addition to deals on California to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from California to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to Idaho.

  • Can I find deals for business class flights from California to Idaho?

    Yes. Cheapflights offers flight deals from California to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

See more FAQs

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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.
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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$78Average$275FlexibilityNo cancel feeOn-time85%
DeltaCheapest$79Average$424FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$85Average$196FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$98Average$200FlexibilityNo cancel feeOn-time88%
Alaska AirlinesCheapest$137Average$346FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$138Average$406FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$147Average$326FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$218Average$496FlexibilityNo cancel feeOn-time71%

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