PHL - STS

$217 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 2/17. 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
$363
Alaska Airlines
Tue 2/24Sat 2/28
PHL - STS • 1 stop
Cheapest one-way
$217
Alaska Airlines
Tue 2/17
PHL - STS • 1 stop
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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

Tue, Feb 24 - Sat, Feb 28
Alaska Airlines Logo
6:20 pm - 9:52 pm
PHL
-
STS
30h 32m1 stop
Alaska Airlines Logo
7:57 pm - 5:20 pm
STS
-
PHL
18h 23m1 stop
$363Alaska Airlines
Thu, Feb 26 - Mon, Mar 2
Alaska Airlines Logo
6:20 pm - 10:32 am
PHL
-
STS
19h 12m1 stop
Alaska Airlines Logo
7:57 pm - 5:20 pm
STS
-
PHL
18h 23m1 stop
$387Alaska Airlines
Thu, Feb 26 - Mon, Mar 2
Alaska Airlines Logo
6:20 pm - 9:14 am
PHL
-
STS
41h 54m2 stops
Alaska Airlines Logo
7:57 pm - 5:20 pm
STS
-
PHL
18h 23m1 stop
$397Alaska Airlines
Thu, Mar 26 - Tue, Mar 31
Alaska Airlines Logo
7:25 am - 6:01 pm
PHL
-
STS
13h 36m1 stop
Alaska Airlines Logo
6:53 pm - 6:05 am
STS
-
PHL
8h 12m1 stop
$407Alaska Airlines
Tue, Feb 24 - Sat, Feb 28
Alaska Airlines Logo
6:20 pm - 9:52 pm
PHL
-
STS
30h 32m1 stop
Alaska Airlines Logo
8:00 am - 5:20 pm
STS
-
PHL
30h 20m2 stops
$417Alaska Airlines
Sun, May 3 - Fri, May 8
Alaska Airlines Logo
6:58 pm - 12:21 pm
PHL
-
STS
20h 23m1 stop
Alaska Airlines Logo
1:13 pm - 6:02 am
STS
-
PHL
13h 49m1 stop
$428Alaska Airlines
Thu, Feb 26 - Mon, Mar 2
Alaska Airlines Logo
6:20 pm - 9:14 am
PHL
-
STS
17h 54m2 stops
Alaska Airlines Logo
8:00 am - 5:20 pm
STS
-
PHL
30h 20m2 stops
$451Alaska Airlines
Sun, May 3 - Fri, May 8
Alaska Airlines Logo
6:58 pm - 12:21 pm
PHL
-
STS
20h 23m1 stop
Alaska Airlines Logo
1:13 pm - 5:58 pm
STS
-
PHL
25h 45m1 stop
$453Alaska Airlines
Thu, Mar 26 - Tue, Mar 31
Alaska Airlines Logo
7:25 am - 6:01 pm
PHL
-
STS
13h 36m1 stop
Alaska Airlines Logo
7:00 am - 6:05 am
STS
-
PHL
20h 05m2 stops
$456Alaska Airlines
Thu, Mar 26 - Tue, Mar 31
Alaska Airlines Logo
7:25 am - 11:59 pm
PHL
-
STS
19h 34m2 stops
Alaska Airlines Logo
7:05 am - 6:05 am
STS
-
PHL
20h 00m2 stops
$458Alaska Airlines
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.

Which airlines fly non-stop between Philadelphia and Santa Rosa?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Philadelphia to Santa Rosa.

There is just one airline that flies from Philadelphia to Santa Rosa direct and that is American Airlines. The best round-trip deal found from American Airlines for the route is $289.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$217
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 8% 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 $217 for a one-way ticket and $363 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 11073 reviews
7.2Comfort
6.4Food
7.5Boarding
8.0Crew
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 2025
PHL - 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)