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Palo Alto

$70+ Cheap flights from Denver (DEN) 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SFO
Jan 16 — Jan 231
Fri 1/16
Fri 1/23
1 adult, Economy
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Cheapflights Tip: The best prices from Denver Intl to Palo Alto are usually found in January or February, booked 81 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Denver to Palo Alto

Cheapest flights from Denver to Palo Alto
Explore the most affordable flight options available from Denver to Palo Alto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/14. 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 12/3110:29 pmDEN - SFO
Nonstop2h 55mFrontier
Tue 1/67:00 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/14$157
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:29 pmDEN - SFO
1 stop17h 42mFrontier
Tue 1/67:00 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/16$169
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:43 pmDEN - SFO
1 stop5h 20mFrontier
Tue 1/67:00 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/16$170
This Frontier deal was found by Cheapflights users on 12/16. 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.
Mon 12/296:35 amDEN - SFO
1 stop9h 46mFrontier
Wed 1/147:00 amSFO - DEN
Nonstop2h 36mFrontier
Deal found 12/16$173
This Expedia deal was found by Cheapflights users on 12/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2210:37 pmDEN - SFO
1 stop23h 59mFrontier
Tue 1/207:00 amSFO - DEN
Nonstop2h 36mFrontier
Deal found 12/16$190
This Frontier deal was found by Cheapflights users on 12/16. 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.
Thu 12/1810:37 pmDEN - SFO
1 stop10h 11mFrontier
Tue 1/67:00 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/16$191
This Frontier deal was found by Cheapflights users on 12/16. 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.
Mon 12/296:35 amDEN - SFO
1 stop9h 46mFrontier
Mon 1/128:58 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/16$193
This Frontier deal was found by Cheapflights users on 12/16. 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.
Fri 12/196:35 amDEN - SFO
1 stop9h 36mFrontier
Tue 1/67:00 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/16$196
This Flightnetwork deal was found by Cheapflights users on 12/16. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/215:43 pmDEN - SFO
1 stop5h 20mFrontier
Tue 1/67:00 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/16$197
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/179:33 amDEN - SFO
1 stop8h 18mFrontier
Tue 1/67:00 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/16$198
This Frontier deal was found by Cheapflights users on 12/17. 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.
Mon 12/296:35 amDEN - SFO
1 stop9h 46mFrontier
Wed 1/77:00 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/17$202
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:10 pmDEN - SFO
Nonstop3h 00mFrontier
Tue 1/67:00 amSFO - DEN
Nonstop2h 42mFrontier
Deal found 12/16$204

Find flight deals from Denver to Palo Alto

Keep the following information in mind while searching for Denver to Palo Alto flight deals. Data was last updated December 17, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$93
(Frontier)

One-way from

$70
(Cheapflightsfares)

Popular in

July

Cheapest in

January

Average price

$283
Provider with most accurate pricing for Denver Intl-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-San Francisco flights.
Search Deals
From Denver Intl to Palo Alto
Search Deals
One-way flight from Denver Intl to Palo Alto
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 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 Denver 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 17, 2025.
Use the filters below to find and compare flights from Denver to Palo Alto that are best for you.

Fly from

Denver

Fly to

Palo Alto

Route

Depart

Return

Price

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 1/31

8:04 am-2:22 pm

1 stop7h 18m

San Francisco

Sat 1/31

4:46 pm-11:35 pm

1 stop5h 49m

$161

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 1/21

8:04 am-2:02 pm

1 stop6h 58m

San Francisco

Sun 1/25

10:12 am-6:41 pm

1 stop7h 29m

$176

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 1/14

8:04 am-2:02 pm

1 stop6h 58m

San Francisco

Sun 1/25

7:40 pm-12:38 pm

1 stop15h 58m

$176

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Tue 1/27

7:47 am-9:45 am

Nonstop2h 58m

San Francisco

Sun 2/1

9:23 pm-12:59 am

Nonstop2h 36m

$177

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 2/25

7:00 am-2:02 pm

1 stop8h 02m

San Francisco

Mon 3/2

9:32 pm-11:38 am

2 stops13h 06m

$195

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Sat 2/7

1:34 pm-8:12 pm

1 stop7h 38m

San Francisco

Mon 2/9

7:55 pm-11:58 pm

2 stops27h 03m

$195

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Fri 2/6

9:05 pm-10:58 pm

Nonstop2h 53m

San Francisco

Mon 2/9

9:23 pm-12:59 am

Nonstop2h 36m

$197

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Fri 2/20

6:45 pm-11:59 pm

1 stop6h 14m

San Francisco

Mon 2/23

9:32 pm-11:38 am

2 stops13h 06m

$205

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Wed 1/28

12:34 pm-9:55 pm

2 stops10h 21m

San Francisco

Mon 2/9

6:56 pm-10:53 am

1 stop14h 57m

$205

DenverSan Francisco

DEN - SFO

DENSFO

Denver Intl

Fri 1/9

8:04 am-8:47 am

1 stop25h 43m

San Francisco

Wed 1/21

8:24 am-11:58 pm

2 stops14h 34m

$208

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 20 results
1
2

Best time to book a flight from Denver to Palo Alto

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

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Palo Alto. Price data was last updated on December 12, 2025.

To ensure you get the cheapest price possible for a flight from Denver to Palo Alto, you should look to book at least 81 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Denver to Palo Alto (average of $53). Flying from Denver to Palo Alto in August is currently the most expensive (average of $124). 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 DEN to P4L?

Find hourly flight availability from Denver 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 17, 2025.

A simple way to save on the total cost of your ticket is to fly from Denver to Palo Alto in the evening. If you’re flexible enough to do this you can expect to save up to 42% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Denver to Palo Alto?

Use this chart to determine the cheapest time to fly round-trip from Denver to Palo Alto. Price data was last updated on December 8, 2024.

Travelers seeking maximum savings on their Denver to Palo Alto flight should consider departing on Friday evenings when fares are most often at their lowest. Monday mornings 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 December 17, 2025.
Get a feel of what it's like to fly with Southwest, United Airlines, and Frontier from Denver to Palo Alto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,249 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
7.9
Good
4,249 reviews
Southwest
7.9
Good
4,249 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
9,092 reviews
Southwest
7.9
Good
4,249 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,082 reviews
Southwest
7.9
Good
4,249 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Overall

7.9

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Denver 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 Denver to Palo Alto?

    For a flight from Denver to Palo Alto, you will be flying from Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city. Denver Intl is the only Denver airport and it handles 16 outbound flights to Palo Alto per day. 5 airlines have flights to Palo Alto from Denver Intl on a regular basis.

  • How popular is this Denver to Palo Alto flight route?

    Flights from Denver Intl to Palo Alto have been viewed 111 times in the past calendar month.

  • How long is the flight from Denver to Palo Alto?

    Airlines like Alaska Airlines and United Airlines fly from Denver to Palo Alto in about 2h 58m. The time it takes to get you to your destination can typically vary by up to 4h 20m. Denver and Palo Alto are separated by a distance of 964 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $41. Users have also found prices from $50 and $78 on Allegiant Air and Southwest, respectively.

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

    Before booking your flight to Palo Alto from Denver, check out the most reliable airlines to get you to your destination on time: Emirates (80%), Air China (79%), Air New Zealand( 79%).

  • What are the cheapest flights from Denver to Palo Alto?

    The cheapest flight price from Denver to Palo Alto is $43. On average you can expect to pay $709. The most popular route, (Denver Intl - San Francisco), can usually be booked for $85.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denver 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 Denver to Palo Alto?

    Currently, January is the cheapest month in which you can book a flight from Denver to Palo Alto (average of $53). Flying from Denver to Palo Alto in August is currently the most expensive (average of $124). 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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Alternative routes for Denver to Palo Alto

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Top 5 airlines flying from Denver to Palo Alto

Discover the top 5 airlines that operate flights from Denver 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 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$186FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$83Average$95FlexibilityNo cancel feeOn-time88%
DeltaCheapest$108Average$236FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$142Average$302FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$163Average$334FlexibilityNo cancel feeOn-time69%

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