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Palo Alto

$59+ Cheap flights from Sky Harbor Intl (PHX) 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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SFO
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Palo Alto are usually found in September or October, booked 44 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Sky Harbor Intl to Palo Alto

Keep the following information in mind while searching for Sky Harbor Intl to Palo Alto flight deals. Data was last updated September 11, 2025.

Round-trip from

$100
(Southwest)

One-way from

$59
(American Airlines)

Popular in

June

Cheapest in

September

Average price

$139
From Phoenix Sky Harbor Intl to Palo Alto
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One-way flight from Phoenix Sky Harbor Intl to Palo Alto
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Highest demand for flights based on searches. 5% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Sky Harbor Intl to Palo Alto

Cheapest flights from Sky Harbor Intl to Palo Alto
Explore the most affordable flight options available from Sky Harbor Intl to Palo Alto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Southwest deal was found by Cheapflights users on 9/10. 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.
Sat 10/47:30 pmPHX - SFO
Nonstop2h 00mSouthwest
Wed 10/83:50 pmSFO - PHX
Nonstop2h 00mSouthwest
Deal found 9/10$100
This Trip.com deal was found by Cheapflights users on 9/10. 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.
Mon 10/274:55 pmPHX - SFO
Nonstop2h 15mMultiple Airlines
Wed 11/57:00 amSFO - PHX
1 stop3h 58mMultiple Airlines
Deal found 9/10$101
This Southwest deal was found by Cheapflights users on 9/10. 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.
Wed 10/84:25 pmPHX - SFO
1 stop4h 55mSouthwest
Wed 10/158:00 amSFO - PHX
Nonstop1h 50mSouthwest
Deal found 9/10$102
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Fri 9/264:10 pmPHX - SFO
Nonstop2h 09mFrontier
Mon 9/297:04 pmSFO - PHX
Nonstop2h 03mFrontier
Deal found 9/10$103
This Trip.com deal was found by Cheapflights users on 9/11. 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.
Fri 10/244:55 pmPHX - SFO
Nonstop2h 15mMultiple Airlines
Tue 10/287:00 amSFO - PHX
1 stop3h 58mMultiple Airlines
Deal found 9/11$104
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Thu 10/164:55 pmPHX - SFO
Nonstop2h 15mFrontier
Thu 10/1610:25 pmSFO - PHX
Nonstop2h 07mFrontier
Deal found 9/10$106
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Thu 10/24:59 pmPHX - SFO
Nonstop2h 09mFrontier
Sat 10/46:00 amSFO - PHX
1 stop5h 47mFrontier
Deal found 9/10$107
This CheapOair deal was found by Cheapflights users on 9/10. 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.
Mon 10/204:55 pmPHX - SFO
Nonstop2h 15mFrontier
Fri 10/246:15 pmSFO - PHX
1 stop24h 38mFrontier
Deal found 9/10$108
This Priceline deal was found by Cheapflights users on 9/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/105:45 amPHX - SFO
1 stop4h 17mFrontier
Mon 10/139:23 pmSFO - PHX
Nonstop2h 04mFrontier
Deal found 9/10$109
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Fri 10/34:10 pmPHX - SFO
Nonstop2h 09mFrontier
Mon 10/67:04 pmSFO - PHX
Nonstop2h 03mFrontier
Deal found 9/10$110

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl 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 September 11, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Palo Alto that are best for you.

Fly from

Sky Harbor Intl

Fly to

Palo Alto

Route

Depart

Return

Price

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Tue 10/14

8:40 am-10:45 am

Nonstop2h 05m

San Francisco

Tue 10/14

3:00 pm-9:00 pm

1 stop6h 00m

$105

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Thu 10/16

9:50 pm-11:45 pm

Nonstop1h 55m

San Francisco

Sat 10/18

4:35 pm-6:35 pm

Nonstop2h 00m

$109

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Thu 10/23

9:50 pm-11:45 pm

Nonstop1h 55m

San Francisco

Sat 10/25

7:00 am-8:55 am

Nonstop1h 55m

$109

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Wed 10/15

8:40 am-10:45 am

Nonstop2h 05m

San Francisco

Sun 10/19

5:25 am-7:15 am

Nonstop1h 50m

$111

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Tue 10/7

8:45 pm-10:45 pm

Nonstop2h 00m

San Francisco

Thu 10/9

6:20 am-8:15 am

Nonstop1h 55m

$111

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Thu 10/16

1:00 pm-9:40 pm

1 stop8h 40m

San Francisco

Sun 10/19

10:25 pm-12:32 am

Nonstop2h 07m

$113

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Sat 10/4

7:30 pm-9:30 pm

Nonstop2h 00m

San Francisco

Sun 10/5

5:25 am-7:15 am

Nonstop1h 50m

$116

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Fri 10/10

9:50 pm-11:45 pm

Nonstop1h 55m

San Francisco

Tue 10/14

4:25 pm-9:00 pm

1 stop4h 35m

$121

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Wed 10/8

10:04 am-12:15 pm

Nonstop2h 11m

San Francisco

Fri 10/10

9:20 pm-11:25 pm

Nonstop2h 05m

$132

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Sat 10/11

7:30 pm-9:30 pm

Nonstop2h 00m

San Francisco

Sun 10/12

5:25 am-7:15 am

Nonstop1h 50m

$132

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 19 results
1
2

Best time to book a flight from Sky Harbor Intl to Palo Alto

Have a flexible travel schedule? Discover the best time to fly to Palo Alto from Sky Harbor Intl 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 Phoenix Sky Harbor Intl Airport to Palo Alto

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Palo Alto?

Use this chart to determine the optimal time to book a round-trip flight from Sky Harbor Intl to Palo Alto. Price data was last updated on August 29, 2025.

The price you pay for your flight from Phoenix Sky Harbor Intl Airport to Palo Alto may vary depending on when you book. For the best chance of a lower fare, look to book 44 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Palo Alto?

Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Palo Alto (average of $276). Flying from Phoenix Sky Harbor Intl Airport to Palo Alto in June is currently the most expensive (average of $357). 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 PHX to P4L?

Find hourly flight availability from Sky Harbor Intl 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 September 11, 2025.

When flying from Phoenix Sky Harbor Intl Airport to Palo Alto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to Palo Alto?

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

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

Weekly flight availability from Phoenix Sky Harbor Intl Airport to Palo Alto

Explore weekly flight availability from Sky Harbor Intl 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 September 11, 2025.

The most flights from PHX to P4L are scheduled on a Thursday (39 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 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 September 11, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and United Airlines from Phoenix Sky Harbor Intl Airport to Palo Alto have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,248 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,177 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

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

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Palo Alto?

    Airlines like Southwest fly from Phoenix Sky Harbor Intl Airport to Palo Alto in about 2h 05m. The time it takes to get you to your destination is usually consistent. Airlines will cover a distance of 650 mi. All flights are typically nonstop.

  • What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Palo Alto?

    No one likes to see their flight delayed. When booking a flight from Phoenix Sky Harbor Intl Airport to Palo Alto consider choosing Air China (94%), ANA (87%) or Qatar Airways (87%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Palo Alto?

    On average you can expect to pay $1,170 for a flight from Phoenix Sky Harbor Intl Airport to Palo Alto. The cheapest flight overall is $63 while the most popular route, (Phoenix Sky Harbor Intl - San Francisco) is currently priced at $74.

  • Can I find deals for flights from Sky Harbor Intl to Palo Alto that include hotel bookings?

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

  • How can I find direct flights from Sky Harbor Intl to Palo Alto?

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

  • Can I find deals for business class flights from Sky Harbor Intl to Palo Alto?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl 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 Phoenix Sky Harbor Intl Airport to Palo Alto?

    Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Palo Alto (average of $276). Flying from Phoenix Sky Harbor Intl Airport to Palo Alto in June is currently the most expensive (average of $357). 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.

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Top 9 airlines flying from Sky Harbor Intl to Palo Alto

Discover the top 9 airlines that operate flights from Sky Harbor Intl 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$53Average$124FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$68Average$169FlexibilityNo cancel feeOn-time85%
Spirit AirlinesCheapest$78Average$137FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$90Average$138FlexibilityNo cancel feeOn-time88%
Alaska AirlinesCheapest$114Average$193FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$124Average$221FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$126Average$251FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$135Average$246FlexibilityNo cancel feeOn-time71%
DeltaCheapest$196Average$297FlexibilityNo cancel feeOn-timeN/A

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