HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Palo Alto

$53+ 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 3/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SFO
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sky Harbor Intl to Palo Alto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Palo Alto are usually found in January or October, booked 70 days in advance, depart on a Friday or Thursday and return on a Saturday

Cheap 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 December 16, 2025.

This Super.com deal was found by Cheapflights users on 12/15. 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.
Sat 12/278:30 amPHX - SFO
Nonstop2h 16mFrontier
Tue 12/308:12 pmSFO - PHX
Nonstop2h 07mFrontier
Deal found 12/15$109
This Orbitz deal was found by Cheapflights users on 12/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:58 amPHX - SFO
1 stop12h 38mFrontier
Tue 12/308:12 pmSFO - PHX
Nonstop2h 07mFrontier
Deal found 12/15$121
This Southwest deal was found by Cheapflights users on 12/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/253:35 pmPHX - SFO
1 stop7h 55mSouthwest
Wed 12/315:10 amSFO - PHX
Nonstop1h 50mSouthwest
Deal found 12/15$134
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:11 pmPHX - SFO
Nonstop2h 14mUnited Airlines
Wed 12/314:35 pmSFO - PHX
Nonstop2h 02mUnited Airlines
Deal found 12/15$137
This Priceline deal was found by Cheapflights users on 12/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:30 amPHX - SFO
Nonstop2h 16mFrontier
Wed 12/311:29 pmSFO - PHX
1 stop4h 38mFrontier
Deal found 12/15$152
This Frontier deal was found by Cheapflights users on 12/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:30 amPHX - SFO
Nonstop2h 16mFrontier
Sat 1/310:41 amSFO - PHX
Nonstop2h 02mFrontier
Deal found 12/15$158
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:58 amPHX - SFO
1 stop12h 38mFrontier
Wed 1/74:01 pmSFO - PHX
1 stop15h 57mFrontier
Deal found 12/15$161
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:30 amPHX - SFO
1 stop10h 00mFrontier
Tue 1/67:09 pmSFO - PHX
1 stop22h 03mFrontier
Deal found 12/15$162
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:30 amPHX - SFO
Nonstop2h 16mFrontier
Sun 1/49:56 pmSFO - PHX
Nonstop2h 02mFrontier
Deal found 12/15$166
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:30 amPHX - SFO
1 stop10h 00mFrontier
Wed 1/74:01 pmSFO - PHX
1 stop15h 57mFrontier
Deal found 12/15$167

Find 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 December 16, 2025.

Round-trip from

$80
(Flightnetwork)

One-way from

$53
(Super.com)

Popular in

November

Cheapest in

January

Average price

$189
From Phoenix Sky Harbor Intl to Palo Alto
Search Deals
One-way flight from Phoenix Sky Harbor Intl to Palo Alto
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 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 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 December 16, 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

Thu 2/12

2:34 pm-7:39 pm

1 stop6h 05m

San Francisco

Mon 2/16

8:18 pm-11:21 pm

Nonstop2h 03m

$117

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Tue 1/20

4:36 pm-5:50 pm

Nonstop2h 14m

San Francisco

Sun 1/25

5:05 pm-8:07 pm

Nonstop2h 02m

$124

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Sat 2/7

4:36 pm-5:50 pm

Nonstop2h 14m

San Francisco

Sat 2/7

8:55 pm-11:57 pm

Nonstop2h 02m

$126

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Sun 2/1

6:05 am-7:21 am

Nonstop2h 16m

San Francisco

Tue 2/3

8:55 pm-11:57 pm

Nonstop2h 02m

$131

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Fri 1/16

6:05 am-7:21 am

Nonstop2h 16m

San Francisco

Mon 1/19

5:05 pm-8:07 pm

Nonstop2h 02m

$131

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Wed 2/4

10:56 am-12:10 pm

Nonstop2h 14m

San Francisco

Sun 2/8

8:55 pm-11:57 pm

Nonstop2h 02m

$131

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Sat 1/17

1:30 pm-8:35 pm

1 stop8h 05m

San Francisco

Mon 1/19

5:30 am-8:20 am

Nonstop1h 50m

$134

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Tue 1/13

5:10 pm-11:12 pm

1 stop7h 02m

San Francisco

Tue 1/20

5:05 pm-8:07 pm

Nonstop2h 02m

$144

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Sun 2/1

8:55 pm-10:05 pm

Nonstop2h 10m

San Francisco

Tue 2/3

9:55 am-2:20 pm

1 stop3h 25m

$147

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Sun 1/18

8:55 am-12:05 pm

1 stop4h 10m

San Francisco

Sun 1/25

7:50 am-12:25 pm

1 stop3h 35m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 21 results
1
2
3

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 December 12, 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 70 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 $39). Flying from Phoenix Sky Harbor Intl Airport to Palo Alto in September is currently the most expensive (average of $86). 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 December 16, 2025.

When flying from Phoenix Sky Harbor Intl Airport to Palo Alto, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 35% versus a flight in the evening.

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 Wednesday at noon when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Phoenix Sky Harbor Intl Airport to Palo Alto?

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 16, 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
11,465 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

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
11,465 reviews
Alaska Airlines
8.0
Very good
11,465 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

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
7.9
Good
4,250 reviews
Alaska Airlines
8.0
Very good
11,465 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

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
9,094 reviews
Alaska Airlines
8.0
Very good
11,465 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

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
11,047 reviews
Alaska Airlines
8.0
Very good
11,465 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

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
3,082 reviews
Alaska Airlines
8.0
Very good
11,465 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Comfort

7.8

Overall

8.0

Crew

8.5

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 Frontier and United Airlines fly from Phoenix Sky Harbor Intl Airport to Palo Alto in about 2h 14m. The time it takes to get you to your destination can typically vary by up to 3h 51m. Airlines will cover a distance of 650 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Palo Alto one-way?

    $30 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $56 and $61, respectively.

  • 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 Air Canada (86%) 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 $836 for a flight from Phoenix Sky Harbor Intl Airport to Palo Alto. The cheapest flight overall is $51 while the most popular route, (Phoenix Sky Harbor Intl - San Francisco) is currently priced at $58.

  • 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 $39). Flying from Phoenix Sky Harbor Intl Airport to Palo Alto in September is currently the most expensive (average of $86). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Sky Harbor Intl to Palo Alto

See prices for flight routes from nearby airports that may be better suited for you.
Sky Harbor Intl to Los Angeles flights
Sky Harbor Intl to Las Vegas flights
Sky Harbor Intl to San Francisco flights
Sky Harbor Intl to Ontario flights
Sky Harbor Intl to Santa Ana flights
Sky Harbor Intl to San Diego flights
Sky Harbor Intl to San Jose flights
Sky Harbor Intl to Sacramento flights
Sky Harbor Intl to Burbank flights
Sky Harbor Intl to Reno flights
Phoenix-Mesa Gateway to Las Vegas flights
Sky Harbor Intl to Long Beach flights
Sky Harbor Intl to Oakland flights
Sky Harbor Intl to San Luis Obispo flights
Sky Harbor Intl to Monterey flights
Sky Harbor Intl to Santa Barbara flights
Sky Harbor Intl to Fresno flights
Sky Harbor Intl to Medford flights
Sky Harbor Intl to Santa Rosa flights
Sky Harbor Intl to Palm Springs flights
Sky Harbor Intl to Bakersfield flights
Sky Harbor Intl to Redding flights
Sky Harbor Intl to Tijuana flights
Sky Harbor Intl to Arcata flights
Sky Harbor Intl to Merced flights
Phoenix-Mesa Gateway to Oakland flights
Sky Harbor Intl to Mammoth Lakes flights
Sky Harbor Intl to Bullhead City flights

Top 7 airlines flying from Sky Harbor Intl to Palo Alto

Discover the top 7 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 December 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$51Average$139FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$68Average$169FlexibilityNo cancel feeOn-time85%
Allegiant AirCheapest$90Average$139FlexibilityNo cancel feeOn-time88%
SouthwestCheapest$105Average$248FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$110Average$239FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$110Average$227FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$127Average$243FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.