$40 Find Cheap Flights from Boise to California - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to California departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flights from Boise to California

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Los Angeles
Los Angeles1 stop$164
San Francisco
San Francisco1 stop$147
San Diego
San Diego2 stops$181
San Jose
San Jose1 stop$197
Palm Springs
Palm Springs1 stop$237
Fresno
Fresno1 stop$248
San Luis Obispo
San Luis Obispo1 stop$317
Bakersfield
Bakersfield1 stop$298
Arcata
Arcata1 stop$284
Redding
Redding1 stop$366
Reno
Reno1 stop$196
Los Angeles
Los Angeles1 stop$164
San Francisco
San Francisco1 stop$147
San Diego
San Diego2 stops$181
San Jose
San Jose1 stop$197
Palm Springs
Palm Springs1 stop$237
Fresno
Fresno1 stop$248
San Luis Obispo
San Luis Obispo1 stop$317
Bakersfield
Bakersfield1 stop$298
Arcata
Arcata1 stop$284
Redding
Redding1 stop$366
Reno
Reno1 stop$196

Book Cheap Boise to California Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to California that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boise to California

Mon, Sep 28 - Wed, Sep 30
Frontier Logo
3:52 pm - 10:46 am
BOI
-
SFO
19h 54m
1 stop
Frontier Logo
11:42 am - 2:57 pm
SFO
-
BOI
26h 15m
1 stop
$147Frontier
Thu, Oct 1 - Sun, Oct 4
Frontier Logo
3:52 pm - 4:43 pm
BOI
-
LAS
1h 51mnonstop
Frontier Logo
12:01 pm - 2:57 pm
LAS
-
BOI
1h 56mnonstop
$156Frontier
Mon, Aug 17 - Wed, Aug 19
Alaska Airlines Logo
4:15 pm - 5:12 pm
BOI
-
LAS
1h 57mnonstop
Alaska Airlines Logo
3:11 pm - 6:09 pm
LAS
-
BOI
1h 58mnonstop
$157Alaska Airlines
Sat, Aug 8 - Sat, Aug 15
Allegiant Air Logo
2:14 pm - 3:33 pm
BOI
-
SNA
2h 19mnonstop
Allegiant Air Logo
10:13 am - 1:24 pm
SNA
-
BOI
2h 11mnonstop
$158Allegiant Air
Sat, Aug 29 - Sat, Sep 5
Alaska Airlines Logo
1:30 pm - 2:31 pm
BOI
-
LAS
2h 01mnonstop
Alaska Airlines Logo
3:11 pm - 6:09 pm
LAS
-
BOI
1h 58mnonstop
$159Alaska Airlines
Mon, Nov 2 - Thu, Nov 5
Allegiant Air Logo
4:37 pm - 5:51 pm
BOI
-
SNA
2h 14mnonstop
Allegiant Air Logo
2:45 pm - 5:53 pm
SNA
-
BOI
2h 08mnonstop
$160Allegiant Air
Sat, Aug 15 - Tue, Aug 25
Southwest Logo
4:05 pm - 4:45 pm
BOI
-
SMF
1h 40mnonstop
Southwest Logo
7:50 pm - 10:15 pm
SMF
-
BOI
1h 25mnonstop
$177Southwest
Mon, Aug 24 - Thu, Aug 27
Southwest Logo
6:00 am - 9:35 am
BOI
-
SAN
4h 35m
1 stop
Southwest Logo
6:20 am - 11:30 am
SAN
-
BOI
4h 10m
1 stop
$182Southwest
Tue, Aug 25 - Tue, Sep 1
Delta Logo
6:00 am - 8:52 am
BOI
-
ONT
3h 52m
1 stop
Delta Logo
5:05 pm - 9:59 pm
ONT
-
BOI
3h 54m
1 stop
$187Delta
Thu, Aug 20 - Sun, Aug 23
Delta Logo
4:00 pm - 7:19 pm
BOI
-
SAN
4h 19m
1 stop
Delta Logo
6:29 am - 12:14 pm
SAN
-
BOI
4h 45m
1 stop
$192Delta
Booking Insights

KAYAK's insights & trends for Boise to California flights

Get data-powered insights and trends into flights from Boise to California to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Boise to California?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boise to California departing in October.

What is the cheapest Boise to California flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to California from Boise found in the last 5 days was to John Wayne (Santa Ana), at $145 round-trip. The most popular route is from Boise (BOI) to San Francisco (SFO), and the cheapest round-trip airline ticket found on this route in the last 5 days was $198.

What is the cheapest time of day to fly to California?

The average price for all round-trip flights from Boise to California depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to California is generally in the afternoon, when round-trip flights cost $351 on average. Morning departures are around 35% more expensive than evening flights, on average. The most expensive time of day to fly to California is generally in the morning, which is peak travel time and where the average cost of a ticket is $554.

Can I save money by flying with a layover from Boise to California?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $304 on average.

What is the cheapest month to fly from Boise to California?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to California, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boise to California is October, when tickets cost $243 (return) on average. On the other hand, the most expensive months are March and July, when the average cost of round-trip tickets is $357 and $345 respectively.

What’s the cheapest day of the week to fly from Boise to California?

The average price of all round-trip flights from Boise to California clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Boise to California, look for departures on Thursdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from California, Saturday is the cheapest day to fly and Sunday is the most expensive.

How far in advance should I book a flight from Boise to California?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boise to California, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boise to California, you should book around 4 weeks before departure, which saves you about 54% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low season

January

Cheapest flight

$40
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Boise to Las Vegas

Flights from Boise to California: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Boise to California 
Verified travelerFlew with Alaska Airlines
BOI
-
SAN
Jan 2026
Since I flew First Class I really have no advice! Everything was perfect! The ticketing agents were fantastic, flew through TSA Precheck, great announcements at the gate, quick boarding. My only suggestion is to check First Class prices before committing to the very expensive baggage fees and choosing a seat fee!!!
Verified travelerFlew with Alaska Airlines
BOI
-
SFO
Feb 2026
Dont wear all your clothes its not worth the discomfort to save on a checked bag.
LisaFlew with Alaska Airlines
BOI
-
BUR
Jul 2024
If they ask you to check your bag at the gate because the flight is full, you get to board sooner even if you don't check ALL of your bags.

FAQs - booking California flights

  • How does KAYAK find such low prices on flights from Boise to California?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boise to California.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boise to California?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boise to California is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boise to California?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Boise to California with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boise to California?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Boise to California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to California

  • Looking for a cheap flight? 25% of our users found tickets from Boise to the following destinations at these prices or less: Las Vegas $201 one-way - $271 round-trip; Los Angeles $223 one-way - $307 round-trip; San Francisco $192 one-way - $316 round-trip

Reviews of the top 5 airlines serving from Boise to California

 
See real verified KAYAK customer reviews for airlines flying from Boise to California. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boise to California? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4243 reviews
8.1Boarding
8.0Comfort
8.6Crew
7.5Entertainment
7.0Food
Airline reviews

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

2.0 MediocreIrene, Jun 2026
DEN - SFO
Read more Southwest reviews

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

No gluten free snacks. Seats felt worn or bare bones even though it was a new 737 MAX 8.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

Boarding was easy. The seats are small and fairly uncomfortable

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

I fell asleep and missed my flight and they rescheduled me no problem. Staff was professional and the plane was clean. I was very happy with my experience.

I enjoyed the Starlink access but didn't have much time to use it. It also kept dropping me so I gave up. The food was very good though when I asked for a different "dessert" they didn't have anything. Chocolate Brownie Cookies are not suitable for everyone...maybe children. The flight staff were amazing - at least in First Class! My first time ever! The trip from Boise to San Diego was FAR better than going to Boise.

Our late returning flight was annoying. The plane was small, but it made boarding and disembarking quicker. I do wish they offered a gluten free snack.

I was standing in line to use the restroom. A First Class passenger wanted to use the restroom after me, but Jaques made me wait on Flight 3418 from BOI to SJC on December 12, 2025. I felt this was inappropriate and rude.

Excellent, I traveled with my adult mom, she was happy for your service, especially, because you helped her with the reel chair. Only a little thing, in the airplane to Boise, the seat was very worn.

Everything was great, your crew is always very pleasant. Your airplanes are always so cold though.

It was a little chilly on the ride. The entertainment was the book I brought, and it was excellent.

Great service. My wheelchair was ready and waiting for me

The check in bag fee should have been disclosed when I booked my flight.

The absolute coldest flight I’ve ever been on, even with a sweater and zip up sweatshirt. Was miserable the entire flight.

We never made it on this flight because we missed our connection due to o delayed flight from Jackson.

We got stuck on the tarmac taxiing after landing early so we didn’t get off the plane until an hour later than we thought we would

It was okay. We were delayed for weather reasons, but the pilots and the flight control staff figured a way around the storm and were able to get us to Los Angeles safely. Not all the staff members were polite, but the entertainment on the flight was good.

Crew was real good, flight was smooth and came in early.

Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.

We sat on the runway for over an hour before departure. That was unwelcome.

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

I specifically picked out right side aisle seats because my left knee sometimes needs to be stretched. But my experience this trip was that the seats were shuffled and I lost those assigned seats, resulting in me having to sit in a much less desirable position for my comfort.

It was a short, comfortable flight. It did leave an hour late due to the pilot having to be replaced (family emergency) but that didn’t inconvenience myself & my friend. The situation was explained, eventually.

There was a piece of plastic baked into my buttermilk biscuit! I have a pictures. The flight attendants in first class were really apologetic, and tried to rectify the situation. I I am very appreciative that they were able to give me some packets of pretzels and gummy bears. I understand they don't personally handle the food until warming it up so I know it wasn't their fault. I don't know whether it was a newer aircraft, or different food packaging, but I was happy that when the food was being warmed up - it didn't smell like plastic. Jokes on me with finding plastic in my food.

The seats were uncomfortable, as if the cushions haven't been switched out in many years. I felt like I was on an old bus. The food was delicious. thank you. Onboard entertainment, very limited. Unless you like violent movies. Why in the world would you have such severely violent movies on a plane? if you don't want to see such things, you don't have a choice. Have you considered that when choosing entertainment? Good god. Why would you have the Godfather? Or black women being brutally beaten with a club? Why in the hell would you put that kind of material on a plane? As for Kayak: Why when I ordered Qantas, was the plane on United?

UA594 was delayed multiple times. I ended up getting picked up so I can make it in time for work 6AM on Monday, 7/6/2026

Excellent flight. On time. Great staff. Clean and crisp cabin.

Know that the movies that you are going to be offered are the oldest be rated movies they could possibly get. They may have one or two new movies that they keep advertising but when you’re flying 15 hours, there is nothing to see past the first new movie.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

United Airlines was fantastic, however, UnderPricer was a nightmare. I got to the airport 4 hours before my flight. We are moving to New Zealand so had quite a bit of baggage (16 checked items) and so wanted to have plenty of time to get everything taken care of properly. When I went to check in they (United) could only find a ticket for me. The 5 tickets for my children were never officially ticketed. I called Underpricer and they told me it was United's fault and United told me that Underpricer just needs to reissue the tickets, but they refused to. I asked the Underpricer agent to transfer me to his supervisor as I was not getting the help I needed. He told me the supervisor was busy but that he would call me back in 30 minutes. 30 minutes came and went with no phone call. After an hour I called Underpricer back but they would not let me talk to the person I had talked to before, just told me that he was talking with the supervisor and technical support. I called again an hour later, was told the same thing. I tried again later, with only about 30 minutes until my flight was scheduled to leave (meaning I had been at the airport for more than 3 hours with my 5 children trying to get ticketed and board the flight). Also, my husband had moved to New Zealand 3 months prior, I haven't seen him in 3 months, my children hadn't seen their dad in 3 months, we were all extremely eager to get on that flight and get to New Zealand. The situation with the tickets did not get resolved until after it was too late to check our luggage and board our flight. We were devastated. My 11 year old son was in tears at not being able to be on his way to see his dad. Thankfully we were rebooked for the next evening, but that night it felt devastating. We'd been at the airport for 4 hours waiting. My in-laws waited with me and then helped me reload all our baggage and took us home to stay with them for the night. On the newly booked flights we could not sit together - my children were spread throughout the plane. So, even though I had paid extra to select our seats after buying my seats from Underpricer only two of us were able to sit together (thankful that my 11 year old wasn't all by himself, but not happy that my 14 & 16 year old daughters were seated by strangers). I really feel that Underpricer should refund me what I paid for the seating ($120 USD). It was a very frustrating situation and I plan on never using Kayak or Underpricer ever again.

The price was the only good thing about this flight. It was scary during takeoff when the plane tilted side to side. It made me feel very nervous as I have never had a take-off that unsmooth. There was no on-flight movie or music options and the only complimentary option was water. Other airlines offer trail mix or a caramel cookie and pop options as complimentary. This flight was a 2.5 hour flight. I understand for shorter flights not having options, but a flight 2 hours or longer should offer more complimentary options and in flight entertainment. Also the seats did not recline and for a longer flight reclining seats are a must for comfort.

A very pleasant flight but it would be greatly improved with wifi to help entertain kids

This is a no frills, get it done, efficient airline. The seat is a lawn chair. You better bring your own entertainment. If you want something other than water you need to pay for it. But they will get you to your destination quickly, on time, and then they will turn the flight around and go right back where they came from. Reliably. Couple times a week tops. If it fits into your schedule, you can’t get there cheaper or faster.

A three hour delay to board and then another hour on the tarmac because they couldn't get a tractor? Ugh.

Allegiant canceled the flight. The flight the next day was full. Allegiant did not provide any compensation besides a refund. Last time on Allegiant.

Seats were very uncomfortable and being charged for snacks and water.........

Allegiant actually impressed me, original inbound flight from PBG was so late they gave us a bird inbound from Des Moines and only left 1h late and gained 40 minutes back in the air. Comfortable flight with no frills but no complaints.

The flight was very delayed (in BOTH directions - outbound and returning). The flight was very very cramped. The plane taxi'd on the runway for a really long time, and I got claustrophobic being in such a tight seat. The pilot and crew both indicated that we were going to make up lost time due to the delay, but the plane arrived LATER than expected.

A foot rest for short legged people and a complimentary water would be nice.

The employees at the check-in counter said my disabled wife and I were going to be separated even though we picked seating together when we bought our tickets. They told us my wife would be seated in row 2 and I would be in row 8, because we bought our tickets from a third party. Fortunately the flight crew said: "No, you two need to be together, we'll fix this." Then they seated us together. We are 75 years old and flying is a challenge for us, so we appreciate all the help we can get. Your flight crew was awesome with us, and with the children on our flight as well. Thank You Allegent Air Lines! 🙂

Everything you need to know for your flight from Boise to California

Information on your arrival and departure airports