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Idaho

$41+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BOI
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$90
(Cheapflightsfares)

One-way from

$41
(FlightHub)

Popular in

December

Cheapest in

October

Average price

$292

Good round-trip deal

$101 or less

Good one-way deal

$53 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. 12% potential increase in price ($38 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 July 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 July 31, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/112:27 pmLAX - GEG
Nonstop2h 35mAllegiant Air
Fri 8/159:55 amGEG - LAX
Nonstop2h 39mAllegiant Air
Deal found 7/28$86
This Mytrip deal was found by Cheapflights users on 7/30. 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.
Sat 9/66:35 amSJC - BOI
1 stop5h 46mSpirit Airlines
Sat 9/132:16 pmBOI - SJC
1 stop6h 44mSpirit Airlines
Deal found 7/30$124
This CheapOair deal was found by Cheapflights users on 7/31. 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.
Thu 9/116:45 amSNA - BOI
1 stop5h 36mSpirit Airlines
Thu 9/182:16 pmBOI - SNA
1 stop8h 49mSpirit Airlines
Deal found 7/31$131
This CheapOair deal was found by Cheapflights users on 7/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:15 amSAN - BOI
1 stop6h 06mSpirit Airlines
Sun 9/212:16 pmBOI - SAN
1 stop10h 08mSpirit Airlines
Deal found 7/29$131
This Mytrip deal was found by Cheapflights users on 7/31. 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.
Thu 9/256:45 amSNA - BOI
1 stop5h 36mMultiple Airlines
Mon 9/296:37 pmBOI - SNA
Nonstop2h 10mMultiple Airlines
Deal found 7/31$134
This Delta deal was found by Cheapflights users on 7/31. 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 9/36:59 pmLAX - GEG
Nonstop2h 27mDelta
Tue 9/97:10 amGEG - LAX
Nonstop2h 58mDelta
Deal found 7/31$137
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/148:00 amSFO - BOI
Nonstop1h 39mHawaiian Airlines
Sat 10/183:37 pmBOI - SFO
Nonstop1h 50mHawaiian Airlines
Deal found 7/29$137
This Hawaiian Airlines deal was found by Cheapflights users on 7/31. 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 8/274:58 pmSJC - BOI
Nonstop1h 40mHawaiian Airlines
Wed 9/310:08 amBOI - SJC
Nonstop1h 55mHawaiian Airlines
Deal found 7/31$137
This Hawaiian Airlines deal was found by Cheapflights users on 7/31. 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.
Thu 9/188:21 pmSAN - BOI
Nonstop2h 22mHawaiian Airlines
Mon 9/227:07 amBOI - SAN
Nonstop2h 23mHawaiian Airlines
Deal found 7/31$137
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/207:58 pmLAX - GEG
1 stop15h 05mMultiple Airlines
Fri 8/2212:25 pmGEG - LAX
Nonstop2h 39mMultiple Airlines
Deal found 7/29$143
This Aunt Betty deal was found by Cheapflights users on 7/29. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:50 pmLAX - GEG
Nonstop2h 35mAlaska Airlines
Mon 10/67:00 amGEG - LAX
Nonstop2h 53mAlaska Airlines
Deal found 7/29$144
This Trip.com deal was found by Cheapflights users on 7/31. 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.
Sat 10/185:07 pmSJC - BOI
Nonstop1h 34mMultiple Airlines
Tue 10/2110:15 amBOI - SJC
Nonstop1h 57mMultiple Airlines
Deal found 7/31$144

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 July 31, 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

Los AngelesSpokane

LAX - GEG

LAXGEG

Los Angeles

Mon 8/11

2:27 pm-5:02 pm

Nonstop2h 35m

Spokane

Fri 8/15

9:55 am-12:34 pm

Nonstop2h 39m

$86

San JoseBoise

SJC - BOI

SJCBOI

San Jose

Sat 9/6

6:35 am-1:21 pm

1 stop5h 46m

Boise Air Term. Gowen Fld

Sat 9/13

2:16 pm-8:00 pm

1 stop6h 44m

$124

Santa AnaBoise

SNA - BOI

SNABOI

Santa Ana J. Wayne/Orange Cnty

Thu 9/11

6:45 am-1:21 pm

1 stop5h 36m

Boise Air Term. Gowen Fld

Thu 9/18

2:16 pm-10:05 pm

1 stop8h 49m

$131

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Thu 9/18

6:15 am-1:21 pm

1 stop6h 06m

Boise Air Term. Gowen Fld

Sun 9/21

2:16 pm-11:24 pm

1 stop10h 08m

$131

Santa AnaBoise

SNA - BOI

SNABOI

Santa Ana J. Wayne/Orange Cnty

Thu 9/25

6:45 am-1:21 pm

1 stop5h 36m

Boise Air Term. Gowen Fld

Mon 9/29

6:37 pm-7:47 pm

Nonstop2h 10m

$134

Los AngelesSpokane

LAX - GEG

LAXGEG

Los Angeles

Wed 9/3

6:59 pm-9:26 pm

Nonstop2h 27m

Spokane

Wed 9/10

2:32 pm-5:27 pm

Nonstop2h 55m

$137

San FranciscoBoise

SFO - BOI

SFOBOI

San Francisco

Tue 10/14

8:00 am-10:39 am

Nonstop1h 39m

Boise Air Term. Gowen Fld

Sat 10/18

3:37 pm-4:27 pm

Nonstop1h 50m

$137

San DiegoBoise

SAN - BOI

SANBOI

San Diego

Thu 9/18

8:21 pm-11:43 pm

Nonstop2h 22m

Boise Air Term. Gowen Fld

Sun 9/21

7:07 am-8:30 am

Nonstop2h 23m

$137

San JoseBoise

SJC - BOI

SJCBOI

San Jose

Wed 8/27

4:58 pm-7:38 pm

Nonstop1h 40m

Boise Air Term. Gowen Fld

Wed 9/3

10:08 am-11:03 am

Nonstop1h 55m

$137

Los AngelesSpokane

LAX - GEG

LAXGEG

Los Angeles

Wed 8/20

7:58 pm-11:03 am

1 stop15h 05m

Spokane

Fri 8/22

12:25 pm-3:04 pm

Nonstop2h 39m

$143

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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, 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 July 31, 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 July 31, 2025.

The most flights from USCA to USID are scheduled on a Thursday (30 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 July 31, 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

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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 16 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    $41 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Allegiant Air and Alaska Airlines, with prices starting from $52 and $66, 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 9 airlines flying from California to Idaho

Discover the top 9 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Avelo AirlinesCheapest$64Average$146FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$78Average$173FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$78Average$256FlexibilityNo cancel feeOn-time85%
DeltaCheapest$79Average$422FlexibilityNo cancel feeOn-timeN/A
Allegiant AirCheapest$98Average$200FlexibilityNo cancel feeOn-time88%
SouthwestCheapest$151Average$328FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$154Average$413FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$156Average$354FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$218Average$473FlexibilityNo cancel feeOn-time71%

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