$104 Cheap Frontier Airlines flights Phoenix (PHX) to Baltimore (BWI)

Apply the “Price (lowest to highest)” filter on Expedia to look for cheap Frontier Airlines round-trip flights from $183 from PHX to BWI. Affordable one-way options from $104 are available as well.**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.

Browse for return or one-way flights to Baltimore in January or February. You could find cheaper fares with Frontier Airlines during these off-peak times.

Search for cheap Frontier Airlines flights from Sky Harbor Intl. Airport (PHX) to Baltimore Washington Intl. Thurgood Marshall Airport (BWI) one to three months before 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. Regardless of fare class and itinerary, the ideal day to book a domestic flight is usually Sunday and the most expensive day is typically 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.

Simply enter your dates, press search and check “Nonstop” on Expedia to find any direct flights from PHX to BWI with Frontier Airlines or other carriers.

To find the earliest departure from PHX to BWI with Frontier Airlines, filter your search by “Early Morning” and “Morning.” Booking an early flight generally 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.

Baltimore Washington Intl. Thurgood Marshall Airport (BWI) is the primary Baltimore gateway for Frontier Airlines flights from Sky Harbor Intl. Airport (PHX).

Fly from PHX to BWI with Frontier Airlines and you’ll enjoy a range of perks starting with a rewarding loyalty program. When you book through Expedia as a Frontier Miles and One Key™ member, you may also earn OneKeyCash™* to spend 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 ticket type, a fee typically applies if you change or cancel your booking more than 24 hours after it has been confirmed. To secure flexible fares, select our “No cancel fee” or “Changes included” filter while searching for flights. To learn more about canceling or changing your reservation, visit “Trips,” select your flight and click on “Manage Booking.”