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$43+ Cheap flights from Idaho to California

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LAX
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Idaho to California

Cheapest flights from Idaho to California
Explore the most affordable flight options available from Idaho to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Mon 12/2210:41 pmBOI - LAS
Nonstop1h 49mAllegiant Air
Mon 12/2912:11 pmLAS - BOI
Nonstop1h 53mAllegiant Air
Deal found 12/14$190
This Gotogate deal was found by Cheapflights users on 12/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1510:41 pmBOI - LAS
Nonstop1h 49mAllegiant Air
Fri 12/1912:51 pmLAS - BOI
Nonstop1h 53mAllegiant Air
Deal found 12/13$196
This Expedia deal was found by Cheapflights users on 12/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:48 pmGEG - LAS
1 stop5h 51mMultiple Airlines
Wed 1/145:42 pmLAS - GEG
1 stop6h 41mMultiple Airlines
Deal found 12/13$220
This Gotogate deal was found by Cheapflights users on 12/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/149:13 pmGEG - LAS
Nonstop2h 23mAllegiant Air
Thu 12/184:32 pmLAS - GEG
Nonstop2h 29mAllegiant Air
Deal found 12/13$228
This Expedia deal was found by Cheapflights users on 12/15. 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.
Sat 12/2012:02 pmGEG - LAS
1 stop11h 40mFrontier
Tue 12/236:30 amLAS - GEG
1 stop9h 23mFrontier
Deal found 12/15$242
This Cheapflightsfares deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:51 pmGEG - LAS
Nonstop2h 23mAllegiant Air
Sun 12/214:32 pmLAS - GEG
Nonstop2h 29mAllegiant Air
Deal found 12/14$251
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Mon 12/299:46 pmBOI - LAS
Nonstop1h 49mMultiple Airlines
Wed 1/73:58 pmLAS - BOI
1 stop6h 03mMultiple Airlines
Deal found 12/14$253
This Booking.com deal was found by Cheapflights users on 12/14. 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.
Mon 12/299:46 pmBOI - LAS
Nonstop1h 49mAllegiant Air
Mon 1/512:11 pmLAS - BOI
Nonstop1h 53mAllegiant Air
Deal found 12/14$255
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 12/316:55 amBOI - SAN
Nonstop2h 26mAlaska Airlines
Wed 1/710:16 amSAN - BOI
Nonstop2h 29mAlaska Airlines
Deal found 12/15$256
This Frontier deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2712:02 pmGEG - LAS
1 stop11h 40mFrontier
Tue 12/306:30 amLAS - GEG
1 stop9h 23mFrontier
Deal found 12/14$257
This Delta deal was found by Cheapflights users on 12/14. 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 12/315:50 amBOI - SNA
1 stop4h 06mDelta
Wed 1/77:30 amSNA - BOI
1 stop7h 47mDelta
Deal found 12/14$259
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Sat 12/2712:02 pmGEG - LAS
1 stop20h 03mMultiple Airlines
Thu 1/85:31 pmLAS - GEG
Nonstop2h 37mMultiple Airlines
Deal found 12/14$263

Find flight deals from Idaho to California

Keep the following information in mind while searching for Idaho to California flight deals. Data was last updated December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$109
(Kiwi.com)

One-way from

$43
(Kiwi.com)

Popular in

March

Cheapest in

April

Average price

$293

Good round-trip deal

$117 or less

Good one-way deal

$88 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Los Angeles flights.
Search Deals
From Idaho to California
Search Deals
One-way flight from Idaho to California
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($6 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Idaho to California.
Search Deals
Price to beat on a one-way flight from Idaho to California.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to California that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 15, 2025.
Use the filters below to find and compare flights from Idaho to California that are best for you.

Fly from

Idaho

Fly to

California

Route

Depart

Return

Price

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Sat 1/10

3:00 pm-5:50 pm

Nonstop2h 50m

San Diego

Tue 1/13

11:03 am-2:06 pm

Nonstop3h 03m

$137

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Wed 1/21

6:48 am-9:47 am

Nonstop2h 59m

San Diego

Sat 1/24

11:03 am-2:06 pm

Nonstop3h 03m

$137

BoiseSan Francisco

BOI - SFO

BOISFO

Boise Air Term. Gowen Fld

Fri 1/9

8:10 am-9:16 am

Nonstop2h 06m

San Francisco

Mon 1/12

7:24 pm-10:09 pm

Nonstop1h 45m

$147

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Tue 2/3

12:10 pm-7:19 pm

1 stop7h 09m

San Diego

Sat 2/7

11:03 am-2:06 pm

Nonstop3h 03m

$147

BoiseLas Vegas

BOI - LAS

BOILAS

Boise Air Term. Gowen Fld

Tue 2/17

12:30 pm-5:15 pm

1 stop5h 45m

Las Vegas Harry Reid Intl

Thu 2/19

7:25 am-3:20 pm

1 stop6h 55m

$156

BoiseLas Vegas

BOI - LAS

BOILAS

Boise Air Term. Gowen Fld

Mon 1/5

5:15 pm-10:44 pm

1 stop6h 29m

Las Vegas Harry Reid Intl

Fri 1/9

2:25 pm-10:18 pm

1 stop6h 53m

$157

SpokaneSan Francisco

GEG - SFO

GEGSFO

Spokane

Sat 1/10

12:32 pm-6:03 pm

1 stop5h 31m

San Francisco

Sat 1/17

4:46 pm-9:25 pm

1 stop4h 39m

$157

BoiseLas Vegas

BOI - LAS

BOILAS

Boise Air Term. Gowen Fld

Tue 1/13

3:35 pm-4:25 pm

Nonstop1h 50m

Las Vegas Harry Reid Intl

Tue 1/20

9:25 am-2:20 pm

1 stop3h 55m

$157

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Sat 1/10

1:20 pm-8:43 pm

1 stop7h 23m

San Diego

Tue 1/13

5:35 pm-12:08 am

1 stop6h 33m

$157

BoiseLas Vegas

BOI - LAS

BOILAS

Boise Air Term. Gowen Fld

Mon 1/12

3:43 pm-10:00 pm

1 stop7h 17m

Las Vegas Harry Reid Intl

Fri 1/16

8:50 am-11:48 am

Nonstop1h 58m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 60 results
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Best time to book a flight from Idaho to California

Have a flexible travel schedule? Discover the best time to fly to California from Idaho with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho to California

What is the cheapest month to book a flight from Idaho to California?

Currently, April is the cheapest month in which you can book a flight from Idaho to California (average of $60). Flying from Idaho to California in November is currently the most expensive (average of $134). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ID to CA?

Find hourly flight availability from Idaho to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

When flying from Idaho to California, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 25% versus a flight in the morning.

What is the cheapest day to fly from Idaho to California?

Use this chart to determine the cheapest time to fly round-trip from Idaho to California. Price data was last updated on December 13, 2025.

Travelers seeking maximum savings on their Idaho to California flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Idaho to California

Explore weekly flight availability from Idaho to California. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 15, 2025.

The most flights from USID to USCA are scheduled on a Monday (30 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (10 on average).

Reviews of airlines servicing California

Get insights into the airlines that provide service to California. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to California. Reviews last updated December 15, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Idaho to California by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,452 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

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
11,452 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

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
7.9
Good
4,249 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

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
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

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
9,092 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

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
700 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

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 Idaho to California. 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 Idaho to California flight route?

    Flights from Idaho to California have been viewed 26 times in the past calendar month.

  • How long is the flight from Idaho to California?

    Airlines like Alaska Airlines, Southwest, and Hawaiian Airlines fly from Idaho to California in about 2h 50m. The time it takes to get you to your destination can typically vary by up to 2h 55m. There are 1028 mi between Idaho and California. Both multi-stop and nonstop flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as $32 on Spirit Airlines. Other airlines that offer cheap prices include Southwest from $60 and Allegiant Air from $64 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho to California 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 Idaho to California?

    Currently, April is the cheapest month in which you can book a flight from Idaho to California (average of $60). Flying from Idaho to California in November is currently the most expensive (average of $134). 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 Idaho to California

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Idaho to California

Discover the top 8 airlines that operate flights from Idaho to California. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$73Average$248FlexibilityNo cancel feeOn-time85%
Spirit AirlinesCheapest$76Average$179FlexibilityNo cancel feeOn-time65%
DeltaCheapest$78Average$374FlexibilityNo cancel feeOn-timeN/A
Allegiant AirCheapest$90Average$176FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$129Average$351FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$137Average$304FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$147Average$311FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$172Average$416FlexibilityNo cancel feeOn-time71%

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