HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Santa Rosa

$260+ Cheap flights from Philadelphia to Santa Rosa (PHL - STS)

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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — STS
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to Santa Rosa 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.

Cheap flight deals from Philadelphia to Santa Rosa

Cheapest flights from Philadelphia to Santa Rosa
Explore the most affordable flight options available from Philadelphia to Santa Rosa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 11, 2026.

This Expedia deal was found by Cheapflights users on 3/9. 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.
Wed 4/297:22 am
PHL
-
STS
1 stop31h 59m
Alaska Airlines
Tue 5/51:13 pm
STS
-
PHL
1 stop13h 49m
Alaska Airlines
Deal found 3/9$383
This Travelocity deal was found by Cheapflights users on 3/8. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:47 pm
PHL
-
STS
1 stop20h 34m
Alaska Airlines
Fri 4/247:00 am
STS
-
PHL
2 stops20h 02m
Alaska Airlines
Deal found 3/8$391
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:47 pm
PHL
-
STS
2 stops17h 16m
Alaska Airlines
Tue 4/146:53 pm
STS
-
PHL
1 stop8h 12m
Alaska Airlines
Deal found 3/6$415
This Southwest deal was found by Cheapflights users on 3/9. 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.
Wed 4/292:00 pm
PHL
-
STS
2 stops11h 10m
Southwest
Tue 5/56:00 am
STS
-
PHL
2 stops14h 55m
Southwest
Deal found 3/9$425
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:25 am
PHL
-
STS
2 stops12h 51m
Alaska Airlines
Tue 4/146:53 pm
STS
-
PHL
1 stop8h 12m
Alaska Airlines
Deal found 3/6$435
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/66:47 pm
PHL
-
STS
1 stop26h 14m
Alaska Airlines
Tue 4/146:53 pm
STS
-
PHL
1 stop8h 12m
Alaska Airlines
Deal found 3/6$436
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:22 am
PHL
-
STS
1 stop18h 35m
Alaska Airlines
Wed 4/291:13 pm
STS
-
PHL
1 stop13h 49m
Alaska Airlines
Deal found 3/9$443
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:25 am
PHL
-
STS
1 stop13h 36m
Alaska Airlines
Tue 4/146:53 pm
STS
-
PHL
1 stop8h 12m
Alaska Airlines
Deal found 3/6$456

Find flight deals from Philadelphia to Santa Rosa

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Santa Rosa (STS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$383
(Expedia)

One-way from

$260
(Southwest)

Popular in

December

Cheapest in

March

Average price

$256
Provider with most accurate pricing for Philadelphia-Santa Rosa Sonoma County flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Santa Rosa Sonoma County flights.
Search Deals
From Philadelphia to Santa Rosa Sonoma County
Search Deals
One-way flight from Philadelphia to Santa Rosa Sonoma County
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Santa Rosa 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 March 11, 2026.
Use the filters below to find and compare flights from Philadelphia to Santa Rosa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Sat 4/25

7:22 am-10:57 pm

1 stop18h 35m

Santa Rosa Sonoma County

Wed 4/29

1:13 pm-6:02 am

1 stop13h 49m

$443

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Fri 4/10

1:35 pm-10:40 pm

2 stops12h 05m

Santa Rosa Sonoma County

Tue 4/14

6:00 am-9:05 pm

2 stops12h 05m

$484
Quickest round-trip

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Sat 4/11

5:35 am-10:20 am

1 stop7h 45m

Santa Rosa Sonoma County

Fri 4/17

11:00 am-12:35 am

2 stops10h 35m

$493

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Tue 4/14

7:25 am-6:01 pm

1 stop13h 36m

Santa Rosa Sonoma County

Sat 4/18

6:53 pm-6:05 am

1 stop8h 12m

$505

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Mon 4/13

7:25 am-10:30 am

1 stop30h 05m

Santa Rosa Sonoma County

Sat 4/18

6:53 pm-6:05 am

1 stop8h 12m

$505

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Tue 4/14

6:47 pm-6:01 pm

1 stop26h 14m

Santa Rosa Sonoma County

Thu 4/16

6:53 pm-6:05 am

1 stop8h 12m

$527

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Sat 4/11

5:35 am-8:30 pm

2 stops17h 55m

Santa Rosa Sonoma County

Thu 4/16

11:00 am-12:35 am

2 stops10h 35m

$561

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Thu 6/4

4:45 pm-11:30 pm

1 stop9h 45m

Santa Rosa Sonoma County

Sun 6/7

7:50 am-3:45 pm

1 stop28h 55m

$576
Cheapest one-way

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Fri 8/21

5:25 am-2:20 pm

2 stops11h 55m

$265
Quickest one-way

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Sat 4/18

8:40 am-3:53 pm

1 stop10h 13m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

Compare providers for flights from Philadelphia to Santa Rosa

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Santa Rosa in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Santa Rosa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Santa Rosa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Santa Rosa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Santa Rosa flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Santa Rosa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Santa Rosa

Have a flexible travel schedule? Discover the best time to fly to Santa Rosa from Philadelphia 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 Philadelphia to Santa Rosa

What is the cheapest month to book a flight from Philadelphia to Santa Rosa?

Currently, June is the cheapest month in which you can book a flight from Philadelphia to Santa Rosa (average of $100). Flying from Philadelphia to Santa Rosa in March is currently the most expensive (average of $215). 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.

Reviews of airlines servicing Santa Rosa

Get insights into the airlines that provide service to Santa Rosa. 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 Santa Rosa. Reviews last updated March 11, 2026.
Peruse reviews from past customers who have flown with American Airlines from Philadelphia to Santa Rosa to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,419 reviews

Overall

7.1

Crew

7.9

Comfort

7.2

Boarding

7.5

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,419 reviews
American Airlines
7.1
Good
11,419 reviews

Overall

7.1

Crew

7.9

Comfort

7.2

Boarding

7.5

Food

6.4

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Santa Rosa. 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 Philadelphia to Santa Rosa?

    Airlines like Alaska Airlines fly from Philadelphia to Santa Rosa in about 31h 59m. The time it takes to get you to your destination can typically vary by up to . The distance from Philadelphia to Santa Rosa is about 2517 mi.

  • What is the cheapest airline to fly from Philadelphia to Santa Rosa round-trip?

    American Airlines, at $289, was found to be the cheapest airline from Philadelphia to Santa Rosa.. American Airlines is priced at 55% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Philadelphia to Santa Rosa that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Santa Rosa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Santa Rosa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Santa Rosa.

  • Can I find deals for business class flights from Philadelphia to Santa Rosa?

    Yes. Cheapflights offers flight deals from Philadelphia to Santa Rosa 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 Philadelphia to Santa Rosa?

    Currently, June is the cheapest month in which you can book a flight from Philadelphia to Santa Rosa (average of $100). Flying from Philadelphia to Santa Rosa in March is currently the most expensive (average of $215). 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

Traveling to a place near Santa Rosa?

Book flights to Santa Rosa if you plan to visit one of these locations
Fort Bragg
Ukiah

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 Philadelphia to Santa Rosa

See prices for flight routes from nearby airports that may be better suited for you.
Newark to San Francisco flights
John F Kennedy Intl to San Francisco flights
John F Kennedy Intl to Los Angeles flights
Newark to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
LaGuardia to San Francisco flights
Newark to Las Vegas flights
Dulles Intl to Las Vegas flights
LaGuardia to Los Angeles flights
LaGuardia to Las Vegas flights
Reagan-National to Las Vegas flights
Reagan-National to Los Angeles flights
Dulles Intl to Los Angeles flights
Philadelphia to Las Vegas flights
Dulles Intl to San Francisco flights
John F Kennedy Intl to San Diego flights
Newark to San Diego flights
Reagan-National to San Francisco flights
John F Kennedy Intl to Ontario flights
LaGuardia to Burbank flights
John F Kennedy Intl to San Jose flights
Newark to San Jose flights
Newark to Ontario flights
Philadelphia to Los Angeles flights
Newark to Oakland flights
Newark to Santa Ana flights
Philadelphia to San Francisco flights
John F Kennedy Intl to Oakland flights
Pittsburgh to Las Vegas flights
Newark to Burbank flights
Dulles Intl to San Diego flights
LaGuardia to San Diego flights
LaGuardia to Ontario flights
Reagan-National to San Diego flights
Newark to Palm Springs flights
John F Kennedy Intl to Santa Ana flights
Philadelphia to San Diego flights
Dulles Intl to Ontario flights
John F Kennedy Intl to Palm Springs flights
Reagan-National to Ontario flights
Dulles Intl to San Jose flights
Philadelphia to Ontario flights
Reagan-National to San Jose flights
Pittsburgh to Los Angeles flights
John F Kennedy Intl to Burbank flights
John F Kennedy Intl to Reno flights
Dulles Intl to Oakland flights

Top airline flying from Philadelphia to Santa Rosa

Discover the top airline that operate flights from Philadelphia to Santa Rosa. 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 March 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$289Average$678FlexibilityNo 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.