Palo Alto

$69+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SFO
Jul 19 — Jul 261
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Cheapflights Tip: The best prices from San Diego to Palo Alto are usually found in October or August, booked 90 days in advance, depart on a Friday or Thursday and return on a Saturday

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 June 19, 2026.

This Frontier deal was found by Cheapflights users on 6/18. 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.
Fri 8/2110:00 am
SAN
-
SFO
Nonstop1h 52m
Frontier
Sun 8/231:07 pm
SFO
-
SAN
Nonstop1h 43m
Frontier
Deal found 6/18$103
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Tue 7/77:46 pm
SAN
-
SFO
Nonstop1h 52m
Frontier
Tue 7/1410:23 pm
SFO
-
SAN
Nonstop1h 41m
Frontier
Deal found 6/18$104
This Travelocity deal was found by Cheapflights users on 6/18. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:36 pm
SAN
-
SFO
Nonstop1h 46m
Multiple Airlines
Thu 9/248:25 am
SFO
-
SAN
Nonstop1h 43m
Multiple Airlines
Deal found 6/18$105
This Kissandfly.com deal was found by Cheapflights users on 6/18. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/910:54 am
SAN
-
SFO
1 stop4h 50m
Frontier
Mon 7/1310:23 pm
SFO
-
SAN
Nonstop1h 41m
Frontier
Deal found 6/18$106
This Kiwi.com deal was found by Cheapflights users on 6/17. 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.
Sat 8/87:45 pm
SAN
-
SFO
Nonstop1h 47m
Frontier
Fri 8/1410:23 pm
SFO
-
SAN
Nonstop1h 36m
Frontier
Deal found 6/17$107
This Frontier deal was found by Cheapflights users on 6/18. 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.
Fri 10/24:36 pm
SAN
-
SFO
Nonstop1h 46m
Frontier
Mon 10/55:52 pm
SFO
-
SAN
Nonstop1h 45m
Frontier
Deal found 6/18$108
This Southwest deal was found by Cheapflights users on 6/16. 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.
Tue 7/148:30 am
SAN
-
SFO
Nonstop1h 40m
Southwest
Tue 7/215:50 am
SFO
-
SAN
Nonstop1h 35m
Southwest
Deal found 6/16$109
This Frontier deal was found by Cheapflights users on 6/16. 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.
Sat 8/17:46 pm
SAN
-
SFO
Nonstop1h 52m
Frontier
Sat 8/810:23 pm
SFO
-
SAN
Nonstop1h 36m
Frontier
Deal found 6/16$111
This Super.com deal was found by Cheapflights users on 6/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/247:46 pm
SAN
-
SFO
Nonstop1h 52m
Frontier
Mon 7/2710:23 pm
SFO
-
SAN
Nonstop1h 41m
Frontier
Deal found 6/15$112
This Expedia deal was found by Cheapflights users on 6/17. 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.
Thu 7/307:46 pm
SAN
-
SFO
Nonstop1h 52m
Frontier
Sun 8/210:23 pm
SFO
-
SAN
Nonstop1h 41m
Frontier
Deal found 6/17$113
This Frontier deal was found by Cheapflights users on 6/17. 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.
Thu 7/167:46 pm
SAN
-
SFO
Nonstop1h 52m
Frontier
Sun 7/1910:23 pm
SFO
-
SAN
Nonstop1h 41m
Frontier
Deal found 6/17$114

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 June 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$103
(Frontier)

One-way from

$69
(Super.com)

Popular in

March

Cheapest in

October

Average price

$199
Provider with most accurate pricing for San Diego-San Francisco flight deals.
Provider most trusted by Cheapflights users for San Diego-San Francisco flights.
From San Diego to Palo Alto
One-way flight from San Diego to Palo Alto
Highest demand for flights based on searches. 16% potential increase in price ($39 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in June 2026

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 June 19, 2026.
Use the filters below to find and compare flights from San Diego to Palo Alto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 7/16

11:15 am-1:00 pm

Nonstop1h 45m

San Francisco

Thu 7/23

5:00 am-11:15 am

1 stop6h 15m

$119

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Tue 8/4

5:30 pm-9:20 pm

1 stop3h 50m

San Francisco

Thu 8/13

8:30 am-10:10 am

Nonstop1h 40m

$119

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Tue 7/14

5:45 pm-11:20 pm

1 stop5h 35m

San Francisco

Mon 7/27

7:35 pm-9:15 pm

Nonstop1h 40m

$119

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Tue 8/18

7:40 pm-9:10 pm

Nonstop1h 30m

San Francisco

Thu 8/20

6:20 am-1:50 pm

1 stop7h 30m

$119

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Tue 7/7

6:00 pm-11:30 pm

1 stop5h 30m

San Francisco

Thu 7/9

4:00 pm-5:40 pm

Nonstop1h 40m

$153

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Sat 8/15

4:06 pm-10:34 pm

1 stop6h 28m

San Francisco

Mon 8/17

7:55 am-9:35 am

Nonstop1h 40m

$155
Quickest round-trip

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Fri 7/3

7:35 pm-9:30 pm

Nonstop1h 55m

San Francisco

Mon 7/6

6:00 am-7:44 am

Nonstop1h 44m

$156

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Thu 7/9

4:25 pm-10:25 pm

2 stops6h 00m

San Francisco

Mon 7/13

7:35 pm-9:15 pm

Nonstop1h 40m

$159

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Sat 7/11

5:30 pm-12:35 am

2 stops7h 05m

San Francisco

Tue 7/14

3:35 pm-8:20 pm

1 stop4h 45m

$168

San DiegoSan Francisco

SAN - SFO

SANSFO

San Diego

Fri 8/21

2:30 pm-8:35 pm

2 stops6h 05m

San Francisco

Sun 8/23

6:00 am-7:35 am

Nonstop1h 35m

$192

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 23 resultsSorted by cheapest first
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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

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 June 19, 2026.

It’s typically best to fly out from San Diego to Palo Alto in the afternoon. Doing so could potentially save you 18% on the flight price compared to flying in the morning, which is usually more expensive.

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 June 19, 2026.

The most flights from SAN to P4L are scheduled on a Thursday (86 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (37 on average).

How much does it cost to fly round-trip from San Diego to Palo Alto?

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 June 13, 2026.

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

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 June 19, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Southwest, andHawaiian 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.

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

7.9

Comfort

7.8

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

7.9

Comfort

7.8

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

7.9

Comfort

7.8

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

7.9

Comfort

7.8

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

7.9

Comfort

7.8

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

7.9

Comfort

7.8

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 58 daily outbound flights to Palo Alto from 7 different airlines.

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

  • 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 45m. Fly via Southwest 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 Frontier, with whom users have recently found tickets for as low as $31. However, be on the lookout for offers from Southwest and United 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: SWISS (64%), Air New Zealand (60%), Lufthansa (60%).

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

    Looking at all options, your cheapest flight can be booked for $70. While the most popular route (San Diego - San Francisco) can be booked for $81 on average, our data indicates $891 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.

See more FAQs

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Alternative routes for San Diego to Palo Alto

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from San Diego to Palo Alto

Discover the top 7 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 June 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$38Average$144FlexibilityNo cancel feeOn-time85%
FrontierCheapest$43Average$103FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$68Average$240FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$77Average$229FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$90Average$206FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$97Average$212FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$217Average$378FlexibilityNo cancel feeOn-time71%

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