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$39+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LAX
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Idaho to California

Keep the following information in mind while searching for Idaho to California flight deals. Data was last updated June 12, 2025.

Round-trip from

$78
(Booking.com)

One-way from

$39
(Mytrip)

Popular in

March

Cheapest in

April

Average price

$262

Good round-trip deal

$98 or less

Good one-way deal

$56 or less
From Idaho to California
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One-way flight from Idaho to California
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Highest demand for flights based on searches. 1% potential increase in price ($4 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Idaho to California.
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Price to beat on a one-way flight from Idaho to California.
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Find 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 June 12, 2025.

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.
Mon 8/2512:25 pmGEG - LAX
Nonstop2h 39mAllegiant Air
Mon 9/19:00 amLAX - GEG
Nonstop2h 35mAllegiant Air
Deal found 6/11$78
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.
Sun 7/209:33 amGEG - LAS
Nonstop2h 15mAllegiant Air
Thu 7/316:20 amLAS - GEG
Nonstop2h 23mAllegiant Air
Deal found 6/11$94
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.
Thu 8/217:00 amBOI - SMF
Nonstop1h 31mAlaska Airlines
Thu 8/289:13 amSMF - BOI
Nonstop1h 28mAlaska Airlines
Deal found 6/10$97
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/17:48 pmBOI - LAS
Nonstop1h 51mSpirit Airlines
Mon 8/44:05 pmLAS - BOI
Nonstop1h 47mSpirit Airlines
Deal found 6/10$104
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 8/53:43 pmBOI - SMF
1 stop5h 02mDelta
Wed 8/137:05 pmSMF - BOI
1 stop3h 54mDelta
Deal found 6/10$117
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/284:35 pmBOI - SNA
Nonstop2h 10mAllegiant Air
Fri 10/36:03 pmSNA - BOI
Nonstop2h 06mAllegiant Air
Deal found 6/11$118
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/67:00 amBOI - SMF
Nonstop1h 31mHawaiian Airlines
Sat 8/99:18 amSMF - BOI
Nonstop1h 24mHawaiian Airlines
Deal found 6/10$124
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.
Thu 8/2811:40 amBOI - SMF
Nonstop1h 30mSouthwest
Sun 8/317:50 pmSMF - BOI
Nonstop1h 25mSouthwest
Deal found 6/11$127
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/45:52 pmGEG - LAS
1 stop26h 42mMultiple Airlines
Thu 8/76:20 amLAS - GEG
Nonstop2h 23mMultiple Airlines
Deal found 6/10$127
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/254:23 pmGEG - LAX
1 stop5h 23mMultiple Airlines
Mon 9/19:00 amLAX - GEG
Nonstop2h 35mMultiple Airlines
Deal found 6/11$134
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.
Wed 8/276:05 pmBOI - LAS
Nonstop1h 50mSouthwest
Wed 9/107:40 pmLAS - BOI
Nonstop1h 45mSouthwest
Deal found 6/10$137
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:44 pmGEG - SFO
Nonstop2h 19mHawaiian Airlines
Tue 10/1410:53 amSFO - GEG
Nonstop2h 11mHawaiian Airlines
Deal found 6/10$137

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 June 12, 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

SpokaneLos Angeles

GEG - LAX

GEGLAX

Spokane

Mon 8/25

12:25 pm-3:04 pm

Nonstop2h 39m

Los Angeles

Mon 9/1

9:00 am-11:35 am

Nonstop2h 35m

$78

SpokaneLas Vegas

GEG - LAS

GEGLAS

Spokane

Sun 7/20

9:33 am-11:48 am

Nonstop2h 15m

Las Vegas Harry Reid Intl

Thu 7/31

6:20 am-8:43 am

Nonstop2h 23m

$94

BoiseSacramento

BOI - SMF

BOISMF

Boise Air Term. Gowen Fld

Thu 8/21

7:00 am-7:31 am

Nonstop1h 31m

Sacramento Intl

Thu 8/28

9:13 am-11:41 am

Nonstop1h 28m

$97

BoiseLas Vegas

BOI - LAS

BOILAS

Boise Air Term. Gowen Fld

Fri 8/1

7:48 pm-8:39 pm

Nonstop1h 51m

Las Vegas Harry Reid Intl

Mon 8/4

4:05 pm-6:52 pm

Nonstop1h 47m

$104

BoiseSacramento

BOI - SMF

BOISMF

Boise Air Term. Gowen Fld

Tue 8/5

3:43 pm-7:45 pm

1 stop5h 02m

Sacramento Intl

Wed 8/13

7:05 pm-11:59 pm

1 stop3h 54m

$117

BoiseSacramento

BOI - SMF

BOISMF

Boise Air Term. Gowen Fld

Wed 8/6

7:00 am-7:31 am

Nonstop1h 31m

Sacramento Intl

Sat 8/9

9:18 am-11:42 am

Nonstop1h 24m

$124

BoiseSacramento

BOI - SMF

BOISMF

Boise Air Term. Gowen Fld

Thu 8/28

11:40 am-12:10 pm

Nonstop1h 30m

Sacramento Intl

Sun 8/31

7:50 pm-10:15 pm

Nonstop1h 25m

$127

SpokaneLas Vegas

GEG - LAS

GEGLAS

Spokane

Mon 8/4

5:52 pm-8:34 pm

1 stop26h 42m

Las Vegas Harry Reid Intl

Thu 8/7

6:20 am-8:43 am

Nonstop2h 23m

$127

SpokaneLos Angeles

GEG - LAX

GEGLAX

Spokane

Mon 8/25

4:23 pm-9:46 pm

1 stop5h 23m

Los Angeles

Mon 9/1

9:00 am-11:35 am

Nonstop2h 35m

$134

BoiseLas Vegas

BOI - LAS

BOILAS

Boise Air Term. Gowen Fld

Wed 8/27

6:05 pm-6:55 pm

Nonstop1h 50m

Las Vegas Harry Reid Intl

Wed 9/10

7:40 pm-10:25 pm

Nonstop1h 45m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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, January is the cheapest month in which you can book a flight from Idaho to California (average of $246). Flying from Idaho to California in March is currently the most expensive (average of $327). 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 June 12, 2025.

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

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 June 12, 2025.

The most flights from USID to USCA are scheduled on a Sunday (32 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

Rainfall in California by month

Plan your trip to California by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in California ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit California when rainfall is around 0.0 in.

Temperature in California by month

Plan your trip to California by taking into account the average temperature totals by month.

If weather is an important factor for your trip to California, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 June 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Idaho to California to help guide your decision. 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
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 53 times in the past calendar month.

  • 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 $39 on Allegiant Air. Other airlines that offer cheap prices include Spirit Airlines from $42 and Hawaiian Airlines from $46 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, January is the cheapest month in which you can book a flight from Idaho to California (average of $246). Flying from Idaho to California in March is currently the most expensive (average of $327). 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 9 airlines flying from Idaho to California

Discover the top 9 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$50Average$165FlexibilityNo cancel feeOn-time65%
Avelo AirlinesCheapest$78Average$132FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$78Average$414FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$88Average$267FlexibilityNo cancel feeOn-time85%
Allegiant AirCheapest$95Average$183FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$147Average$376FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$148Average$319FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$151Average$312FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$246Average$390FlexibilityNo cancel feeOn-time71%

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