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Palo Alto

$54+ 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 7/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SFO
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Palo Alto are usually found in August or September, booked 44 days in advance, depart on a Friday or Thursday and return on a Saturday

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 July 3, 2025.

Round-trip from

$97
(Frontier)

One-way from

$54
(CheapOair)

Popular in

June

Cheapest in

August

Average price

$175
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. 6% potential increase in price ($12 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 July 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 July 3, 2025.

This Frontier deal was found by Cheapflights users on 7/3. 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 8/77:30 amPHX - SFO
Nonstop2h 05mFrontier
Mon 8/1110:37 amSFO - PHX
1 stop4h 05mFrontier
Deal found 7/3$97
This Expedia deal was found by Cheapflights users on 7/1. 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 11/612:30 pmPHX - SFO
Nonstop2h 14mMultiple Airlines
Wed 11/124:18 pmSFO - PHX
Nonstop1h 59mMultiple Airlines
Deal found 7/1$108
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Fri 8/17:37 pmPHX - SFO
Nonstop2h 02mUnited Airlines
Mon 8/47:10 pmSFO - PHX
Nonstop2h 05mUnited Airlines
Deal found 7/2$125
This American Airlines deal was found by Cheapflights users on 7/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/52:00 pmPHX - SFO
Nonstop2h 03mAmerican Airlines
Tue 9/95:50 amSFO - PHX
Nonstop2h 03mAmerican Airlines
Deal found 7/3$128
This Southwest deal was found by Cheapflights users on 7/3. 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 8/309:55 amPHX - SFO
1 stop3h 50mSouthwest
Tue 9/212:45 pmSFO - PHX
Nonstop1h 55mSouthwest
Deal found 7/3$139

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 July 3, 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 8/7

7:30 am-9:35 am

Nonstop2h 05m

San Francisco

Mon 8/11

10:37 am-2:42 pm

1 stop4h 05m

$97

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Fri 8/1

7:37 pm-9:39 pm

Nonstop2h 02m

San Francisco

Mon 8/4

7:10 pm-9:15 pm

Nonstop2h 05m

$125

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Fri 9/5

2:00 pm-4:03 pm

Nonstop2h 03m

San Francisco

Tue 9/9

5:50 am-7:53 am

Nonstop2h 03m

$128

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Sat 8/30

9:55 am-1:45 pm

1 stop3h 50m

San Francisco

Tue 9/2

12:45 pm-2:40 pm

Nonstop1h 55m

$139

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Fri 7/18

7:30 am-9:35 am

Nonstop2h 05m

$54

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Wed 7/30

7:15 am-9:19 am

Nonstop2h 04m

$63

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Wed 8/20

2:25 pm-5:45 pm

1 stop3h 20m

$74

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Sat 9/20

4:30 pm-9:43 pm

1 stop5h 13m

$78

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Thu 7/17

7:32 pm-12:03 am

1 stop4h 31m

$99

PhoenixSan Francisco

PHX - SFO

PHXSFO

Phoenix Sky Harbor Intl

Tue 7/15

1:56 pm-3:56 pm

Nonstop2h 00m

$120

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 June 27, 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 $360). 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 July 3, 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 June 30, 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 July 3, 2025.

The most flights from PHX to P4L are scheduled on a Wednesday (32 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (15 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 July 3, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta 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

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    $54 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and Southwest, with prices starting from $63 and $74, 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 ANA (87%), China Southern (85%) or Qatar Airways (85%) 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 $1,532 for a flight from Phoenix Sky Harbor Intl Airport to Palo Alto. The cheapest flight overall is $55 while the most popular route, (Phoenix Sky Harbor Intl - San Francisco) is currently priced at $76.

  • 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 $360). 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$46Average$109FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$68Average$169FlexibilityNo cancel feeOn-time85%
Spirit AirlinesCheapest$78Average$141FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$90Average$135FlexibilityNo cancel feeOn-time88%
Alaska AirlinesCheapest$114Average$370FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$121Average$217FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$135Average$265FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$137Average$255FlexibilityNo cancel feeOn-time63%
DeltaCheapest$176Average$272FlexibilityNo cancel feeOn-timeN/A

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