$99 Cheap Flights from Santa Rosa (STS) to Phoenix (PHX)

View $99 flight on Wed, Aug 20, 2025Opens in a new window

Popular airlines from Santa Rosa, CA (STS-Sonoma County) to Phoenix Sky Harbor Intl. Airport (PHX)

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Cheap Flights from Santa Rosa to Phoenix (STS-PHX)

Prices were available within the past 7 days and start at $99 for one-way flights and $199 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Tue, Sep 30 - Wed, Oct 15
STS
Santa Rosa
PHX
Phoenix
$199 Roundtrip, found 11 hours ago
$199
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Tue, Sep 30 from Santa Rosa to Phoenix, returning Wed, Oct 15, priced at $199 found 11 hours ago
Hawaiian Airlines
Sat, Oct 4 - Wed, Oct 15
STS
Santa Rosa
PHX
Phoenix
$210 Roundtrip, found 11 hours ago
$210
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Sat, Oct 4 from Santa Rosa to Phoenix, returning Wed, Oct 15, priced at $210 found 11 hours ago
Hawaiian Airlines
Tue, Nov 4 - Wed, Nov 12
STS
Santa Rosa
PHX
Phoenix
$216 Roundtrip, found 1 day ago
$216
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Tue, Nov 4 from Santa Rosa to Phoenix, returning Wed, Nov 12, priced at $216 found 1 day ago
Hawaiian Airlines
Tue, Nov 4 - Mon, Nov 10
STS
Santa Rosa
PHX
Phoenix
$220 Roundtrip, found 1 day ago
$220
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Tue, Nov 4 from Santa Rosa to Phoenix, returning Mon, Nov 10, priced at $220 found 1 day ago
Hawaiian Airlines
Sat, Oct 4 - Mon, Oct 20
STS
Santa Rosa
PHX
Phoenix
$222 Roundtrip, found 11 hours ago
$222
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Sat, Oct 4 from Santa Rosa to Phoenix, returning Mon, Oct 20, priced at $222 found 11 hours ago
Hawaiian Airlines
Tue, Sep 30 - Sat, Oct 11
STS
Santa Rosa
PHX
Phoenix
$230 Roundtrip, found 11 hours ago
$230
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Tue, Sep 30 from Santa Rosa to Phoenix, returning Sat, Oct 11, priced at $230 found 11 hours ago
Alaska Airlines
Sun, Sep 7 - Thu, Sep 11
STS
Santa Rosa
PHX
Phoenix
$231 Roundtrip, found 12 hours ago
$231
Roundtrip
found 12 hours ago
Select Alaska Airlines flight, departing Sun, Sep 7 from Santa Rosa to Phoenix, returning Thu, Sep 11, priced at $231 found 12 hours ago
Hawaiian Airlines
Sat, Nov 8 - Wed, Nov 12
STS
Santa Rosa
PHX
Phoenix
$238 Roundtrip, found 1 day ago
$238
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sat, Nov 8 from Santa Rosa to Phoenix, returning Wed, Nov 12, priced at $238 found 1 day ago
Hawaiian Airlines
Wed, Dec 10 - Fri, Dec 12
STS
Santa Rosa
PHX
Phoenix
$240 Roundtrip, found 1 day ago
$240
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Dec 10 from Santa Rosa to Phoenix, returning Fri, Dec 12, priced at $240 found 1 day ago
American Airlines
Wed, Oct 8 - Sat, Oct 11
STS
Santa Rosa
PHX
Phoenix
$305 Roundtrip, found 17 hours ago
$305
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Wed, Oct 8 from Santa Rosa to Phoenix, returning Sat, Oct 11, priced at $305 found 17 hours ago

Find the cheapest month to fly from Santa Rosa (STS) to Phoenix (PHX)

September is typically the cheapest month to fly

From $227 - $480 per traveler.

Graph displaying average flight prices per month

Alternative airports near Phoenix

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sky Harbor Intl. PHX. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $425
PHX
Sky Harbor Intl.
CheapestClosest
Average driving time to city center10 min
Flights from $425
Flights from Santa Rosa (STS) to Phoenix (PHX)
Origin airport
Sonoma County
Destination airport
Sky Harbor Intl.
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines
Roundtrip price
$198
Distance
697 mi
Average flight time
2 hours 9 mins

Santa Rosa to Phoenix Flights

The cheapest times to fly from Santa Rosa to Phoenix

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Santa Rosa to Phoenix are during the month of September. You can find some of the cheapest flights from Santa Rosa to Phoenix with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Santa Rosa to Phoenix

Sunday is one of the best days to book for cheap flights from Santa Rosa to Phoenix: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Santa Rosa to Phoenix

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Santa Rosa to Phoenix in 2025. You can also book with separate airlines for your outbound and return journeys, from $99 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Santa Rosa to Phoenix flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Santa Rosa to Phoenix airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX) cost?
Pick up cheap return tickets starting at $305 from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a American Airlines flight leaving STS on August 9 2025 and touching down at PHX. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from STS to PHX?
The cheapest flights from STS to PHX are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX)?
Jump on a direct flight with American Airlines and travel straight from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX).
What is the cheapest airline that flies from STS to PHX?
At the moment, the cheapest airline offering one-way flights from STS to PHX is Alaska Airlines. You can take off on this route from $237. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from STS on September 16 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX)?
On average, only 1 direct flight departs daily from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX). Want additional options? Use our filter tool to find flights with layovers and explore a new city along the way.
What are the most popular departure times for flights from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX)?
More travelers fly between STS and PHX at 12 PM than at any other time. Prefer a quieter experience? Consider flying outside peak hours and there's a chance you'll save on your ticket as well.
What day of the week has the most flights from STS to PHX?
If you fly on a Friday, you'll get the widest range of options for flights from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX).
What is the earliest flight from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX)?
Sonoma County Airport (STS)'s earliest flight to Sky Harbor Intl. Airport (PHX) takes off at approximately 12:58PM UTC-8. With a travel duration of 2h 5m, you'll arrive at around 4:03PM UTC-7.
How long does it take to fly from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX)?
Typically, it takes 2 hours and 5 minutes to travel the 700 mi from STS to PHX.
What is the best time to fly from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX)?
To reach Sky Harbor Intl. Airport (PHX) without delays, pick a flight that takes off from Sonoma County Airport (STS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Phoenix from Sonoma County Airport (STS)?
If you've booked a direct flight from Sonoma County Airport (STS) to Phoenix, Sky Harbor Intl. Airport (PHX) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX) last-minute?
Holding off until right before your break to book a flight from STS to PHX often results in higher prices. While you might find some last-minute discounts, there's no guarantee. Be flexible with your travel plans to boost your chances of scoring a bargain.
Is it cheaper to book a STS to PHX flight and hotel package?
Compared with arranging hotels and flights separately, booking a STS to PHX flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place takes the hassle out of planning your trip. Simply pick your flights and choose from our extensive range of stays, then customize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Sonoma County Airport (STS) to Sky Harbor Intl. Airport (PHX)?
If you reserved your STS to PHX flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

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*Available to One Key members.