PHL - STS

$249 Find Cheap Flights from Philadelphia to Santa Rosa

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Santa Rosa departing on 3/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Santa Rosa

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Santa Rosa, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Santa Rosa, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$408
Alaska Airlines
Sat 12/6Sat 12/13
PHL - STS • 1 stop
Cheapest one-way
$249
Alaska Airlines
Mon 3/23
PHL - STS • 1 stop
Top airlines
Alaska Airlines
Cheapest • from $408 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Santa Rosa!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Philadelphia to Santa Rosa (PHL-STS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Santa Rosa that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Santa Rosa

Sat, Dec 6 - Sat, Dec 13
Alaska Airlines Logo
7:06 am - 1:29 pmPHL-STS
9h 23m1 stop
Alaska Airlines Logo
10:59 am - 5:46 amSTS-PHL
15h 47m2 stops
$408Alaska Airlines
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Sat, Dec 6 - Sat, Dec 13
Alaska Airlines Logo
6:54 pm - 1:29 pmPHL-STS
21h 35m1 stop
Alaska Airlines Logo
2:21 pm - 5:53 pmSTS-PHL
24h 32m1 stop
$412Alaska Airlines
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Sat, Dec 6 - Sat, Dec 13
Alaska Airlines Logo
7:06 am - 7:15 pmPHL-STS
15h 09m2 stops
Alaska Airlines Logo
7:50 am - 5:53 pmSTS-PHL
31h 03m2 stops
$413Alaska Airlines
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Mon, Jan 5 - Sat, Jan 10
American Airlines Logo
10:35 am - 3:51 pmPHL-STS
8h 16m1 stop
American Airlines Logo
12:55 pm - 11:51 pmSTS-PHL
7h 56m1 stop
$454American Airlines
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Mon, Jan 5 - Sat, Jan 10
American Airlines Logo
8:34 am - 3:51 pmPHL-STS
10h 17m2 stops
American Airlines Logo
12:55 pm - 11:51 pmSTS-PHL
7h 56m1 stop
$490American Airlines
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Fri, Jan 23 - Sun, Jan 25
Alaska Airlines Logo
7:06 pm - 10:35 amPHL-STS
18h 29m1 stop
Alaska Airlines Logo
7:00 am - 6:03 pmSTS-PHL
32h 03m2 stops
$493Alaska Airlines
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Fri, Jan 23 - Sun, Jan 25
Alaska Airlines Logo
7:06 pm - 7:24 pmPHL-STS
27h 18m2 stops
Alaska Airlines Logo
7:00 am - 6:03 pmSTS-PHL
32h 03m2 stops
$498Alaska Airlines
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Fri, Jan 23 - Sun, Jan 25
American Airlines Logo
9:00 am - 3:53 pmPHL-STS
9h 53m1 stop
American Airlines Logo
12:55 pm - 11:51 pmSTS-PHL
7h 56m1 stop
$499American Airlines
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Tue, Dec 16 - Sat, Jan 3
American Airlines Logo
7:10 am - 12:27 pmPHL-STS
8h 17m1 stop
American Airlines Logo
4:21 pm - 5:26 amSTS-PHL
10h 05m1 stop
$534American Airlines
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Sun, Feb 22 - Wed, Feb 25
American Airlines Logo
8:40 am - 3:57 pmPHL-STS
10h 17m1 stop
American Airlines Logo
12:58 pm - 11:59 pmSTS-PHL
8h 01m1 stop
$554American Airlines
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Booking Insights

KAYAK's insights & trends for Philadelphia to Santa Rosa flights

Get data-powered insights and trends into flights from Philadelphia to Santa Rosa to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Philadelphia to Santa Rosa?

The average price of all round-trip flights from Philadelphia to Santa Rosa clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Santa Rosa on a Saturday and more expensive on a Wednesday. On your return trip to Philadelphia, you should consider flying back on a Tuesday, and avoid Fridays for better deals.

Find deals

Good to know

Cheapest flight$249
Most popular time to fly and prices are also 6% lower on average.
Flight from Philadelphia to Santa Rosa

When to book flights from Philadelphia to Santa Rosa

Are your dates flexible? Find out the best times to travel from Philadelphia to Santa Rosa based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Santa Rosa

  • What is the cheapest flight from Philadelphia to Santa Rosa?

    In the last 3 days, the lowest price for a flight from Philadelphia to Santa Rosa was $249 for a one-way ticket and $408 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Santa Rosa?

    No, a passport isn't needed to fly from Philadelphia to Santa Rosa. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Philadelphia to Santa Rosa?

    Philadelphia and Santa Rosa are both served by 1 main airport. You will leave Philadelphia from Philadelphia and will be arriving at Santa Rosa Sonoma County.

  • Which aircraft models fly most regularly from Philadelphia to Santa Rosa?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to Santa Rosa?

    oneworld is the only airline alliance operating flights between Philadelphia and Santa Rosa.

  • How does KAYAK find such low prices on flights from Philadelphia to Santa Rosa?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Santa Rosa.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Santa Rosa?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Santa Rosa from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Santa Rosa?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Santa Rosa with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and STS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Santa Rosa?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Santa Rosa from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Philadelphia to Santa Rosa

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Santa Rosa. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Santa Rosa? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 11050 reviews
7.2Comfort
8.0Crew
6.4Food
7.5Boarding
6.9Entertainment
Airline reviews

Delays to take off and to leave the plane after landing added a lot of time to this flight.

6.0 GoodMiguel, Oct 2025PHL - MIA
Read more American Airlines reviews

Delays to take off and to leave the plane after landing added a lot of time to this flight.

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Excellent - explanations were clear staff was nice and flight was comfortable

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

Did not get the seat I selected and paid for.

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

Everything you need to know for your flight from Philadelphia to Santa Rosa

Information on your arrival and departure airports

Philadelphia (PHL)
Santa Rosa (STS)