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Idaho

$39+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BOI
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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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 September 11, 2025.

Round-trip from

$89
(Southwest)

One-way from

$39
(Netflights)

Popular in

December

Cheapest in

October

Average price

$267

Good round-trip deal

$135 or less

Good one-way deal

$45 or less
From California to Idaho
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One-way flight from California to Idaho
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Highest demand for flights based on searches. 9% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from California to Idaho.
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Price to beat on a one-way flight from California to Idaho.
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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 September 11, 2025.

This Southwest deal was found by Cheapflights users on 9/9. 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 10/2210:30 amSAN - BOI
Nonstop2h 15mSouthwest
Sat 10/256:45 amBOI - SAN
Nonstop2h 15mSouthwest
Deal found 9/9$89
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 10/157:50 pmSAN - BOI
Nonstop2h 32mAlaska Airlines
Wed 10/227:13 amBOI - SAN
Nonstop2h 32mAlaska Airlines
Deal found 9/10$103
This Southwest deal was found by Cheapflights users on 9/11. 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 10/78:15 amSAN - BOI
1 stop6h 20mSouthwest
Sat 10/112:50 pmBOI - SAN
1 stop7h 30mSouthwest
Deal found 9/11$109
This Southwest deal was found by Cheapflights users on 9/10. 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.
Wed 10/88:20 amSMF - BOI
Nonstop1h 25mSouthwest
Wed 10/155:55 pmBOI - SMF
Nonstop1h 30mSouthwest
Deal found 9/10$110
This Southwest deal was found by Cheapflights users on 9/10. 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.
Sat 10/1811:40 amSAN - BOI
Nonstop2h 25mSouthwest
Wed 10/223:15 pmBOI - SAN
Nonstop2h 15mSouthwest
Deal found 9/10$111
This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1510:15 amSAN - BOI
Nonstop2h 20mSouthwest
Mon 11/171:25 pmBOI - SAN
Nonstop2h 10mSouthwest
Deal found 9/11$114
This Hawaiian Airlines deal was found by Cheapflights users on 9/9. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/42:57 pmSMF - BOI
1 stop7h 08mHawaiian Airlines
Tue 10/77:00 amBOI - SMF
Nonstop1h 32mHawaiian Airlines
Deal found 9/9$117
This Hawaiian Airlines deal was found by Cheapflights users on 9/11. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/187:50 pmSAN - BOI
Nonstop2h 32mHawaiian Airlines
Wed 10/227:13 amBOI - SAN
Nonstop2h 32mHawaiian Airlines
Deal found 9/11$120
This Southwest deal was found by Cheapflights users on 9/9. 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.
Tue 9/301:35 pmSAN - BOI
Nonstop2h 15mSouthwest
Mon 10/66:55 pmBOI - SAN
1 stop4h 35mSouthwest
Deal found 9/9$123
This Southwest deal was found by Cheapflights users on 9/10. 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 12/23:15 pmLAX - GEG
1 stop5h 20mSouthwest
Tue 12/96:05 amGEG - LAX
1 stop5h 50mSouthwest
Deal found 9/10$124
This Southwest deal was found by Cheapflights users on 9/10. 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.
Wed 10/86:15 pmBUR - BOI
1 stop3h 55mSouthwest
Wed 10/155:30 pmBOI - BUR
1 stop4h 50mSouthwest
Deal found 9/10$124
This Southwest deal was found by Cheapflights users on 9/10. 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.
Wed 12/1012:40 pmBUR - BOI
1 stop7h 00mSouthwest
Sat 12/1311:45 amBOI - BUR
1 stop6h 15mSouthwest
Deal found 9/10$127

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 September 11, 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

$83

SacramentoBoise

SMF - BOI

SMFBOI

Sacramento Intl

Sat 1/17

6:45 pm-9:15 pm

Nonstop1h 30m

Boise Air Term. Gowen Fld

Tue 1/20

5:25 pm-5:55 pm

Nonstop1h 30m

$99

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Wed 10/8

7:50 pm-11:22 pm

Nonstop2h 32m

Boise Air Term. Gowen Fld

Wed 10/15

7:13 am-8:45 am

Nonstop2h 32m

$103

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Tue 10/21

7:58 am-11:34 am

Nonstop2h 36m

Boise Air Term. Gowen Fld

Wed 10/22

7:10 pm-8:49 pm

Nonstop2h 39m

$103

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Sat 10/25

11:40 am-3:05 pm

Nonstop2h 25m

Boise Air Term. Gowen Fld

Wed 11/5

1:25 pm-2:35 pm

Nonstop2h 10m

$106

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Wed 10/22

9:30 am-2:25 pm

1 stop3h 55m

Boise Air Term. Gowen Fld

Sat 10/25

2:15 pm-5:20 pm

1 stop4h 05m

$109

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Sat 10/25

7:50 pm-11:22 pm

Nonstop2h 32m

Boise Air Term. Gowen Fld

Wed 11/5

7:45 pm-9:14 pm

Nonstop2h 29m

$120

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Sat 10/18

7:50 pm-11:22 pm

Nonstop2h 32m

Boise Air Term. Gowen Fld

Tue 10/21

7:13 am-8:45 am

Nonstop2h 32m

$120

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Tue 9/30

1:35 pm-4:50 pm

Nonstop2h 15m

Boise Air Term. Gowen Fld

Mon 10/6

6:55 pm-10:30 pm

1 stop4h 35m

$123

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Wed 10/15

7:50 pm-11:22 pm

Nonstop2h 32m

Boise Air Term. Gowen Fld

Tue 10/21

10:15 am-3:06 pm

1 stop5h 51m

$124

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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, October is the cheapest month in which you can book a flight from California to Idaho (average of $314). Flying from California to Idaho in June is currently the most expensive (average of $398). 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 September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from California to Idaho as you normally would.

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 September 11, 2025.

The most flights from USCA to USID are scheduled on a Thursday (30 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (27 on average).

How much does it cost to fly round-trip from California to Idaho?

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 September 11, 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
10,000 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

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
4,248 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

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
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

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
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

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
702 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.0

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 21 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. Most flights are nonstop.

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

    $42 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on Hawaiian Airlines and Alaska Airlines, with prices starting from $42 and $42, 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, October is the cheapest month in which you can book a flight from California to Idaho (average of $314). Flying from California to Idaho in June is currently the most expensive (average of $398). 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$78Average$188FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$78Average$259FlexibilityNo cancel feeOn-time85%
DeltaCheapest$79Average$415FlexibilityNo cancel feeOn-timeN/A
Allegiant AirCheapest$98Average$198FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$147Average$409FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$150Average$328FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$152Average$344FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$218Average$473FlexibilityNo cancel feeOn-time71%

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