$83 Cheap Frontier Airlines flights Philadelphia (PHL) to Los Angeles (LAX)

Scoring cheap one-way Frontier Airlines flights from PHL to LAX from $83 on Expedia is simple — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares from $143 for your next getaway.**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 Los Angeles are generally more affordable in the quieter months of January and February. Whether you’re searching for a one-way or a return ticket, you could find a better deal then.

Look for cheap Frontier Airlines flights from Philadelphia Intl. Airport (PHL) to Los Angeles Intl. Airport (LAX) one to three months ahead of your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the best day to book a domestic flight is generally Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**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.

To figure out if there’s a direct journey from PHL to LAX with Frontier Airlines or other airlines, use our “Nonstop” filter when browsing for flights.

To find the earliest departure from PHL to LAX with Frontier Airlines, filter your results by “Early Morning” and “Morning.” Choosing an early flight usually means you’ll experience fewer cancellations.**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.

Los Angeles Intl. Airport (LAX) is the primary Los Angeles hub for Frontier Airlines flights from Philadelphia Intl. Airport (PHL).

Depart from PHL to LAX with Frontier Airlines and look forward to a range of perks including a rewarding loyalty program. When you book through Expedia as a Frontier Miles and One Key™ member, you may also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your fare type, a fee will generally apply if you modify or cancel your booking more than 24 hours after it has been confirmed. To find tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes when searching for flights. To learn more about canceling or changing your reservation, go to “Trips,” select your flight and tick “Manage Booking.”