$45 Cheap Frontier Airlines flights San Francisco (SFO) to Phoenix (PHX)

Use the “Price (lowest to highest)” filter on Expedia to search for cheap Frontier Airlines round-trip flights from $90 from SFO to PHX. Affordable one-way tickets from $45 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines flights to Phoenix are typically more affordable in the quieter months of July and August. Whether you’re in search of a one-way or a return ticket, you could find a better deal then.

To find cheap Frontier Airlines fares from San Francisco Intl. Airport (SFO) to Sky Harbor Intl. Airport (PHX), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the price you pay. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Frontier Airlines offers direct flights from San Francisco Intl. Airport (SFO) to Sky Harbor Intl. Airport (PHX), with 4 weekly departures. Simply choose the “Nonstop” and “Airline” filters during your search on Expedia to see all direct Frontier Airlines flights to PHX.

Depart San Francisco Intl. Airport (SFO) for Sky Harbor Intl. Airport (PHX) on a direct Frontier Airlines flight, and you’ll be in the skies for around 2h 12m.

Jetting off from SFO at 11:23AM UTC-8, the first Frontier Airlines flight to PHX arrives at 2:35PM UTC-7. Flying earlier in the day means you’re less likely to encounter delays.* After something later? The last Frontier Airlines flight from SFO to PHX departs at 11:33AM UTC-8 and touches down at 2:45PM UTC-7.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Frontier Airlines flights from San Francisco Intl. Airport (SFO) to Phoenix land at Sky Harbor Intl. Airport (PHX). This is the main gateway here.

A rewarding loyalty program and the ability to rack up points through Frontier Miles are the start of the reasons to depart from SFO to PHX with Frontier Airlines. Plus, when you sign up to our One Key™ program, you can earn OneKeyCash™* on top of any airline loyalty program earnings. It’s yours to spend on future travel plans.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Frontier Airlines typically operates Airbus A320neo planes for flights from San Francisco Intl. Airport (SFO) to Sky Harbor Intl. Airport (PHX). Keep in mind that aircraft type can vary depending on operational demands, so the plane you board might be different on your day of travel.

Changes are often free within 24 hours of booking, but your airline may charge you after that time. For further details about modifying your reservation, check out your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to change your plans without additional charges, apply the “Changes included” or “No cancel fee” filter when organizing your next break.