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Palo Alto

$56+ Cheap flights from San Diego (SAN) to Palo Alto, CA

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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SFO
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
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Cheapflights Tip: The best prices from San Diego to Palo Alto are usually found in January or March, booked 87 days in advance, depart on a Friday or Thursday and return on a Monday

Cheap flight deals from San Diego to Palo Alto

Cheapest flights from San Diego to Palo Alto
Explore the most affordable flight options available from San Diego to Palo Alto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 26, 2025.

This Frontier deal was found by Cheapflights users on 12/26. 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.
Wed 12/318:10 pmSAN - SFO
Nonstop1h 53mFrontier
Fri 1/92:13 pmSFO - SAN
Nonstop1h 39mFrontier
Deal found 12/26$199
This Frontier deal was found by Cheapflights users on 12/26. 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.
Wed 12/318:10 pmSAN - SFO
Nonstop1h 53mFrontier
Mon 1/52:13 pmSFO - SAN
Nonstop1h 39mFrontier
Deal found 12/26$200
This Frontier deal was found by Cheapflights users on 12/26. 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.
Mon 12/298:10 pmSAN - SFO
Nonstop1h 53mFrontier
Fri 1/92:13 pmSFO - SAN
Nonstop1h 39mFrontier
Deal found 12/26$201
This Frontier deal was found by Cheapflights users on 12/26. 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.
Mon 12/298:10 pmSAN - SFO
Nonstop1h 53mFrontier
Mon 1/52:13 pmSFO - SAN
Nonstop1h 39mFrontier
Deal found 12/26$202
This Expedia deal was found by Cheapflights users on 12/25. 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.
Wed 12/318:10 pmSAN - SFO
Nonstop1h 53mMultiple Airlines
Sun 2/17:00 amSFO - SAN
Nonstop1h 35mMultiple Airlines
Deal found 12/25$203
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/318:10 pmSAN - SFO
Nonstop1h 53mFrontier
Sun 2/19:32 pmSFO - SAN
1 stop11h 19mFrontier
Deal found 12/25$226
This Frontier deal was found by Cheapflights users on 12/26. 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.
Mon 12/298:10 pmSAN - SFO
Nonstop1h 53mFrontier
Sat 1/1012:00 pmSFO - SAN
1 stop9h 58mFrontier
Deal found 12/26$228
This Expedia deal was found by Cheapflights users on 12/25. 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 12/308:10 pmSAN - SFO
Nonstop1h 53mMultiple Airlines
Thu 1/2911:41 amSFO - SAN
Nonstop1h 44mMultiple Airlines
Deal found 12/25$234
This Kiwi.com deal was found by Cheapflights users on 12/26. 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 12/318:10 pmSAN - SFO
Nonstop1h 53mFrontier
Sun 1/42:13 pmSFO - SAN
Nonstop1h 39mFrontier
Deal found 12/26$240
This CheapOair deal was found by Cheapflights users on 12/25. 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.
Wed 12/318:10 pmSAN - SFO
Nonstop1h 53mFrontier
Sat 1/32:13 pmSFO - SAN
Nonstop1h 39mFrontier
Deal found 12/25$244
This Frontier deal was found by Cheapflights users on 12/26. 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.
Wed 12/318:10 pmSAN - SFO
Nonstop1h 53mFrontier
Thu 1/88:48 amSFO - SAN
1 stop4h 41mFrontier
Deal found 12/26$247
This Frontier deal was found by Cheapflights users on 12/26. 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.
Mon 12/298:10 pmSAN - SFO
Nonstop1h 53mFrontier
Thu 1/88:48 amSFO - SAN
1 stop4h 41mFrontier
Deal found 12/26$249

Find flight deals from San Diego to Palo Alto

Keep the following information in mind while searching for San Diego to Palo Alto flight deals. Data was last updated December 26, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$105
(eDestinos)

One-way from

$56
(Trip.com)

Popular in

November

Cheapest in

January

Average price

$183
Provider with most accurate pricing for San Diego-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-San Francisco flights.
Search Deals
From San Diego to Palo Alto
Search Deals
One-way flight from San Diego to Palo Alto
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Palo Alto 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 26, 2025.
Use the filters below to find and compare flights from San Diego to Palo Alto that are best for you.

Fly from

San Diego

Fly to

Palo Alto

Route

Depart

Return

Price

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 3/12

8:04 am-9:59 am

Nonstop1h 55m

San Francisco

Tue 3/17

6:40 am-8:18 am

Nonstop1h 38m

$117

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 2/26

9:54 am-11:44 am

Nonstop1h 50m

San Francisco

Fri 2/27

7:00 am-8:40 am

Nonstop1h 40m

$117

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Wed 2/4

7:00 am-8:47 am

Nonstop1h 47m

San Francisco

Tue 2/10

2:52 pm-4:30 pm

Nonstop1h 38m

$117

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 1/22

6:15 am-8:00 am

Nonstop1h 45m

San Francisco

Thu 1/29

10:40 pm-12:15 am

Nonstop1h 35m

$117

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 1/15

4:00 pm-5:48 pm

Nonstop1h 48m

San Francisco

Sun 1/18

7:00 am-8:35 am

Nonstop1h 35m

$117

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Sat 2/7

7:52 pm-9:39 pm

Nonstop1h 47m

San Francisco

Mon 2/9

7:00 am-8:37 am

Nonstop1h 37m

$117

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 1/15

4:00 pm-5:48 pm

Nonstop1h 48m

San Francisco

Thu 1/22

11:41 am-1:25 pm

Nonstop1h 44m

$117

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 1/22

7:45 am-9:34 am

Nonstop1h 49m

San Francisco

Sun 1/25

7:00 am-8:37 am

Nonstop1h 37m

$117

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Fri 2/20

10:09 pm-11:59 pm

Nonstop1h 50m

San Francisco

Sun 2/22

6:40 am-8:18 am

Nonstop1h 38m

$117

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Tue 3/17

10:09 pm-11:59 pm

Nonstop1h 50m

San Francisco

Tue 3/31

6:35 am-8:15 am

Nonstop1h 40m

$117

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

Showing 1-10 of 22 results
1
2
3

Best time to book a flight from San Diego to Palo Alto

Have a flexible travel schedule? Discover the best time to fly to Palo Alto from San Diego 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 San Diego to Palo Alto

How far ahead should I book a flight from San Diego to Palo Alto?

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Palo Alto. Price data was last updated on December 19, 2025.

The best time to book flights from San Diego to Palo Alto is 87 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Diego to Palo Alto?

Currently, February is the cheapest month in which you can book a flight from San Diego to Palo Alto (average of $18). Flying from San Diego to Palo Alto in November is currently the most expensive (average of $62). 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 SAN to P4L?

Find hourly flight availability from San Diego to Palo Alto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 26, 2025.

It’s typically best to fly out from San Diego to Palo Alto in the afternoon. Doing so could potentially save you 36% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from San Diego to Palo Alto?

Use this chart to determine the cheapest time to fly round-trip from San Diego to Palo Alto. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Diego to Palo Alto flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Diego to Palo Alto

Explore weekly flight availability from San Diego to Palo Alto. 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 26, 2025.

The most flights from SAN to P4L are scheduled on a Friday (71 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (55 on average).

Reviews of airlines servicing Palo Alto

Get insights into the airlines that provide service to Palo Alto. 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 Palo Alto. Reviews last updated December 26, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Hawaiian Airlines from San Diego to Palo Alto 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
11,544 reviews

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,544 reviews
Alaska Airlines
8.0
Very good
11,544 reviews

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
8.0
Very good
4,258 reviews
Alaska Airlines
8.0
Very good
11,544 reviews

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Hawaiian Airlines
7.8
Good
2,820 reviews
Alaska Airlines
8.0
Very good
11,544 reviews

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,116 reviews
Alaska Airlines
8.0
Very good
11,544 reviews

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Frontier
5.8
Fair
3,071 reviews
Alaska Airlines
8.0
Very good
11,544 reviews

Crew

8.5

Overall

8.0

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Palo Alto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Diego to Palo Alto?

    Located just 2.6 mi from the city center, San Diego is the airport most travelers will use when flying to Palo Alto from San Diego. Booking flights from San Diego (SAN) to Palo Alto should be relatively easy as there are 61 daily outbound flights to Palo Alto from 8 different airlines.

  • How popular is this San Diego to Palo Alto flight route?

    Within the past month, 256 users have taken a look at flights from San Diego to Palo Alto.

  • How long is the flight from San Diego to Palo Alto?

    There are many flights that can get you from San Diego to Palo Alto in 1h 50m. Fly via Alaska Airlines or United Airlines to get the fastest option. There are 446 mi between San Diego and Palo Alto. Generally, flights for this route are nonstop.

  • What are the cheapest airlines to fly from San Diego to Palo Alto one-way?

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $21. However, be on the lookout for offers from Frontier and Hawaiian Airlines, as they are both options that can get you from San Diego to Palo Alto for a low price.

  • What are the most reliable airlines from San Diego to Palo Alto?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Diego to Palo Alto on time: Emirates (88%), SWISS (86%), ITA Airways (85%).

  • What are the cheapest flights from San Diego to Palo Alto?

    Looking at all options, your cheapest flight can be booked for $58. While the most popular route (San Diego - San Francisco) can be booked for $87 on average, our data indicates $913 when flying from San Diego to Palo Alto.

  • Can I find deals for flights from San Diego to Palo Alto that include hotel bookings?

    Yes. In addition to deals on San Diego to Palo Alto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Palo Alto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Palo Alto.

  • Can I find deals for business class flights from San Diego to Palo Alto?

    Yes. Cheapflights offers flight deals from San Diego to Palo Alto 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 San Diego to Palo Alto?

    Currently, February is the cheapest month in which you can book a flight from San Diego to Palo Alto (average of $18). Flying from San Diego to Palo Alto in November is currently the most expensive (average of $62). 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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Top 8 airlines flying from San Diego to Palo Alto

Discover the top 8 airlines that operate flights from San Diego to Palo Alto. 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 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$24Average$96FlexibilityNo cancel feeOn-time65%
FrontierCheapest$29Average$93FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$30Average$138FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$56Average$191FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$57Average$160FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$77Average$182FlexibilityNo cancel feeOn-time63%
DeltaCheapest$88Average$197FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$197Average$361FlexibilityNo cancel feeOn-time71%

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