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Santa Rosa

$381+ Cheap flights from Philadelphia to Santa Rosa (PHL - STS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — STS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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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 December 18, 2025.

This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/197:00 amPHL - STS
1 stop9h 32mAlaska Airlines
Wed 12/312:24 pmSTS - PHL
1 stop12h 13mAlaska Airlines
Deal found 12/16$904
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:00 amPHL - STS
1 stop9h 32mAlaska Airlines
Mon 1/56:00 amSTS - PHL
1 stop8h 44mAlaska Airlines
Deal found 12/17$943
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:40 pmPHL - STS
1 stop20h 49mAmerican Airlines
Sun 1/412:59 pmSTS - PHL
1 stop13h 22mAmerican Airlines
Deal found 12/16$955
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/197:00 amPHL - STS
1 stop9h 32mAlaska Airlines
Tue 12/306:37 pmSTS - PHL
2 stops32h 00mAlaska Airlines
Deal found 12/16$990
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:00 amPHL - STS
1 stop9h 32mAlaska Airlines
Thu 1/16:00 amSTS - PHL
1 stop8h 44mAlaska Airlines
Deal found 12/17$992
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/237:00 amPHL - STS
1 stop18h 17mAlaska Airlines
Wed 12/316:00 amSTS - PHL
1 stop20h 37mAlaska Airlines
Deal found 12/16$996
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:00 amPHL - STS
2 stops20h 18mAlaska Airlines
Wed 12/312:24 pmSTS - PHL
1 stop12h 13mAlaska Airlines
Deal found 12/17$1,007
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:00 amPHL - STS
1 stop9h 32mAlaska Airlines
Tue 1/63:53 pmSTS - PHL
2 stops23h 10mAlaska Airlines
Deal found 12/17$1,016
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:00 amPHL - STS
1 stop9h 32mAlaska Airlines
Sun 1/48:17 pmSTS - PHL
2 stops30h 20mAlaska Airlines
Deal found 12/17$1,021

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$377
(Alaska Airlines)

Popular in

December

Cheapest in

February

Average price

$1,088
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
Highest demand for flights based on searches. 14% potential increase in price ($121 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($43 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 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 December 18, 2025.
Use the filters below to find and compare flights from Philadelphia to Santa Rosa that are best for you.

Fly from

Philadelphia

Fly to

Santa Rosa

Route

Depart

Return

Price

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Wed 2/18

6:20 pm-10:32 am

1 stop19h 12m

Santa Rosa Sonoma County

Fri 2/20

7:57 pm-5:20 pm

1 stop18h 23m

$381

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Wed 2/18

8:40 am-3:57 pm

1 stop10h 17m

Santa Rosa Sonoma County

Fri 2/20

4:27 pm-5:27 am

1 stop10h 00m

$420

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Fri 1/23

7:06 pm-10:35 am

1 stop18h 29m

Santa Rosa Sonoma County

Sun 1/25

7:56 pm-6:03 pm

2 stops43h 07m

$461

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Tue 3/3

6:20 pm-4:47 pm

2 stops25h 27m

Santa Rosa Sonoma County

Sun 3/8

8:00 am-5:22 pm

2 stops30h 22m

$476

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Sat 3/21

7:00 am-2:20 pm

1 stop10h 20m

Santa Rosa Sonoma County

Mon 3/23

7:28 pm-5:23 am

2 stops30h 55m

$523

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Thu 1/8

7:06 pm-11:59 pm

1 stop31h 53m

Santa Rosa Sonoma County

Mon 1/12

9:33 pm-6:03 pm

1 stop17h 30m

$547

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Tue 3/24

7:00 am-2:20 pm

1 stop10h 20m

Santa Rosa Sonoma County

Sat 4/4

11:55 am-5:23 am

2 stops14h 28m

$586

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Wed 3/25

7:00 am-2:20 pm

1 stop10h 20m

Santa Rosa Sonoma County

Sat 4/4

11:55 am-5:23 am

2 stops14h 28m

$586

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Thu 12/25

7:00 am-1:32 pm

1 stop9h 32m

$544

PhiladelphiaSanta Rosa

PHL - STS

PHLSTS

Philadelphia

Tue 12/30

9:00 am-3:51 pm

1 stop9h 51m

$639

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 16 results
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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Philadelphia-Santa Rosa flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, February is the cheapest month in which you can book a flight from Philadelphia to Santa Rosa (average of $71). Flying from Philadelphia to Santa Rosa in May is currently the most expensive (average of $183). 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 December 18, 2025.
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
7.2
Good
11,055 reviews

Crew

8.0

Boarding

7.5

Food

6.5

Overall

7.2

Entertainment

6.9

Comfort

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,May 2025

PHL - LHR

A very good flight. They were not as accommodating in relation to the food and beverage options. Last year on the same flight to London, they offered an additional glass of wine beer or vodka. They also offered extra snacks and were constantly checking on us. This flight, they barely acknowledged our presence. They were not rude just not sociable or readily accessible.
American Airlines
7.2
Good
11,055 reviews
American Airlines
7.2
Good
11,055 reviews

Crew

8.0

Boarding

7.5

Food

6.5

Overall

7.2

Entertainment

6.9

Comfort

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,May 2025

PHL - LHR

A very good flight. They were not as accommodating in relation to the food and beverage options. Last year on the same flight to London, they offered an additional glass of wine beer or vodka. They also offered extra snacks and were constantly checking on us. This flight, they barely acknowledged our presence. They were not rude just not sociable or readily accessible.

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 and American Airlines fly from Philadelphia to Santa Rosa in about 10h 17m. The time it takes to get you to your destination can typically vary by up to 8h 55m. The distance from Philadelphia to Santa Rosa is about 2517 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 59% 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, February is the cheapest month in which you can book a flight from Philadelphia to Santa Rosa (average of $71). Flying from Philadelphia to Santa Rosa in May is currently the most expensive (average of $183). 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

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Alternative routes for Philadelphia to Santa Rosa

See prices for flight routes from nearby airports that may be better suited for you.
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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$289Average$678FlexibilityNo cancel feeOn-time71%

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