$49 Find Cheap Flights from Boise to California

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 4/21. 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.
1 adult
1 adult, Economy, 0 bags

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to California.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to California.
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Flight Deals

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$157
San Francisco
San Franciscononstop$155
San Diego
San Diegononstop$165
San Jose
San Jose1 stop$137
Palm Springs
Palm Springsnonstop$137
Fresno
Fresno1 stop$195
San Luis Obispo
San Luis Obispo1 stop$204
Bakersfield
Bakersfield1 stop$454
Arcata
Arcata1 stop$442
Redding
Redding1 stop$204
Reno
Reno1 stop$205
Sacramento
Sacramentononstop$116
Los Angeles
Los Angeles1 stop$157
San Francisco
San Franciscononstop$155
San Diego
San Diegononstop$165
San Jose
San Jose1 stop$137
Palm Springs
Palm Springsnonstop$137
Fresno
Fresno1 stop$195
San Luis Obispo
San Luis Obispo1 stop$204
Bakersfield
Bakersfield1 stop$454
Arcata
Arcata1 stop$442
Redding
Redding1 stop$204
Reno
Reno1 stop$205
Sacramento
Sacramentononstop$116

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

Wed, Apr 8 - Fri, Apr 10
Alaska Airlines Logo
7:00 am - 7:34 am
BOI
-
SMF
1h 34mnonstop
Alaska Airlines Logo
1:04 pm - 3:31 pm
SMF
-
BOI
1h 27mnonstop
$116Alaska Airlines
Tue, Mar 24 - Wed, Apr 1
Alaska Airlines Logo
4:40 pm - 5:45 pm
BOI
-
ONT
2h 05mnonstop
Alaska Airlines Logo
6:25 pm - 9:26 pm
ONT
-
BOI
2h 01mnonstop
$117Alaska Airlines
Sat, May 2 - Tue, May 5
Delta Logo
3:44 pm - 10:21 pm
BOI
-
SMF
7h 37m
1 stop
Delta Logo
5:27 pm - 12:17 am
SMF
-
BOI
5h 50m
1 stop
$122Delta
Tue, Mar 24 - Tue, Mar 31
Southwest Logo
5:55 pm - 6:25 pm
BOI
-
SMF
1h 30mnonstop
Southwest Logo
8:45 pm - 11:10 pm
SMF
-
BOI
1h 25mnonstop
$127Southwest
Wed, Apr 1 - Wed, Apr 8
Delta Logo
4:43 pm - 9:58 pm
BOI
-
SMF
6h 15m
1 stop
Delta Logo
7:35 am - 1:05 pm
SMF
-
BOI
4h 30m
1 stop
$132Delta
Tue, Mar 24 - Tue, Mar 31
Southwest Logo
6:40 am - 7:15 am
BOI
-
SMF
1h 35mnonstop
Southwest Logo
6:45 pm - 11:50 pm
SMF
-
BOI
4h 05m
1 stop
$137Southwest
Wed, Apr 8 - Wed, Apr 15
Delta Logo
7:05 am - 12:52 pm
BOI
-
SJC
6h 47m
1 stop
Delta Logo
11:35 am - 8:00 pm
SJC
-
BOI
7h 25m
1 stop
$137Delta
Thu, Apr 2 - Sun, Apr 5
United Airlines Logo
12:30 pm - 1:32 pm
BOI
-
SFO
2h 02mnonstop
United Airlines Logo
6:25 pm - 9:15 pm
SFO
-
BOI
1h 50mnonstop
$157United Airlines
Tue, Apr 7 - Tue, Apr 14
United Airlines Logo
12:30 pm - 5:51 pm
BOI
-
LAX
6h 21m
1 stop
United Airlines Logo
4:55 pm - 8:13 pm
LAX
-
BOI
2h 18mnonstop
$157United Airlines
Thu, May 14 - Thu, May 21
Allegiant Air Logo
3:13 pm - 4:28 pm
BOI
-
SNA
2h 15mnonstop
Allegiant Air Logo
11:59 am - 3:10 pm
SNA
-
BOI
2h 11mnonstop
$185Allegiant Air
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.

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 72 hours was to Ontario, at $137 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 72 hours was $205.

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.

No, with an average price for the route of $288, prices are generally cheapest when you fly direct.

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 April, when tickets cost $217 (return) on average. On the other hand, the most expensive months are March and December, when the average cost of round-trip tickets is $335 and $292 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 46% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$49
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from Boise to Sacramento

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.

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

    The cheapest time of day to fly to California is generally in the evening, when round-trip flights cost $392 on average. Morning departures are around 37% 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 $535.

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 $143 one-way - $280 round-trip; Los Angeles $158 one-way - $310 round-trip; San Francisco $146 one-way - $362 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
Alaska AirlinesOverall score based on 11949 reviews
7.0Entertainment
7.8Comfort
8.1Boarding
7.1Food
8.5Crew
Airline reviews

The flight attendant was friendly and attentive. Although our interaction was brief—- it made a difference. The crew was upfront about turbulence. I like the Maui pretzels.

10.0 ExcellentSuzanne, Feb 2026
SEA - MRY
Read more Alaska Airlines reviews

The flight attendant was friendly and attentive. Although our interaction was brief—- it made a difference. The crew was upfront about turbulence. I like the Maui pretzels.

The boarding process could be clearer, there's never a call for group f

I bought tickets MONTHS ago for a flight that left SAN at 14:30. That is what it says on our tickets. I was never notified of any time changes. During online check-in. I discovered the flight time had been changed to 15:45. This was unacceptable and had I been notified, I would have changed flights, or airlines. That departure time was unworkable with our plans. We called Alaska and asked for an explanation. They said flight time was changed 11/08/25. No proof of notification could be offered. We asked to be moved to an earlier flight. After much pleading, the rep said she would allow a “one time exception..” While I appreciate being moved, this was YOUR fault Alaska Airlines.

Representatives both at the gate and on the plane have zero interest in helping you! It’s really unfortunate…

The planes were in very nice condition. Comfortable enough leg room. I had a very quick connection on my return home I made it just fine and so did my luggage!!

We left late; had to land in Minneapolis unscheduled to refuel and then landed in interior instead of lax at 2am......

I was in economy class and there was plenty of leg room. New interior which was nice and they served various kinds of chips and sodas on the red eye. You couldn't get a bottle of water but they instead served it in a medium paper cup from a reinforced structured paper container, environmental friendly.

good, no complaints but nothing to rave about. It was fine

I love Alaska! We arrived on the later side without seat assignments only to find the had oversold the flight by 1. The attendants worked extra hard to find a way for our party of 7 to stay together and we made it on the flight! Loved the free WiFi also!

I paid for the WiFi and it didn’t work during the whole flight

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.

The charges were ridiculous for an hour flight and the turbulence was very scary.

3 hour delay. Had to change plans and was still delayed.

The flight crew was extremely rude and especially not helpful when our flight was delayed.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Overall we had a good experience during our flight from San Francisco to Houston.

it was a very short flight so my expectations were low.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Superb. Staff great. Great flight. As with other airlines, seating too tight and restrictive.

There is not one likable thing about this airline. It’s starts with the deceptive pricing and continues through the whole flight. The worst staff I’ve ever experienced way over priced bags absolutely no food or drink (unacceptable and you should be embarrassed) the seats are cramped and uncomfortable there is no entertainment there is nothing about this trash airline that constitutes any amount of money. It’s worse than spirit and way more expensive it is disgraceful. Do not travel with Allegiant I repeat do not bother no matter what they say the price is it is never ever going to be the right choice I’m mind blown at how awful the entire experience was I’m embarrassed that I chose so poorly I cannot reiterate enough how beyond horrible this company and its staff are, not one person on this flight or at the airport is qualified to sweep up trash on a city sidewalk they should certainly never be given any job that requires a brain or manners or communication with human beings, what a disgrace to the human race. Your criminal chiselers and should be put out to pasture

Great flight. Friendly staff. Free snacks and drinks would be nice. I would love fewer taxes and fees added on.

My 90 year old father flew with me. He needed wheel chair assistance and is nearly deaf. The staff was amazing with him.

It was fine. Nobody was outstandingly friendly but no one was rude and everything was smooth . The captain thanked us for flying but no one greeted me as I walked on the plane or as I exited which is the least they could do lol

Clean, friendly, roomy. But check-in from the phone link was terrible. Repeated attempts wouldn’t save at the final step. Just kept spinning! It was very frustrating. Finally, I used the app (vs website link) to check-in which worked very smoothly on the first attempt.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

Excellent flight and even arrived 23 min early. No entertainment , or wi fi on board, but I downloaded a couple of movies beforehand which kept me entertained. Really like flying Allegiant airlines.

WE were delayed about an hour and never any communications from the employees working the gate. We also were moved to a total of three gates.

I love how they show love to their customers and care about them too.

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

Information on your arrival and departure airports