Cheap Southwest Airlines flights Marion (MWA) to Philadelphia (PHL)

Make use of the “Price (lowest to highest)” filter on Expedia to find cheap Southwest Airlines round-trip flights from MWA to PHL. Affordable one-way fares are also available.**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.

Southwest Airlines flights to Philadelphia are usually more affordable in the low-season months of January and February. Whether you’re in search of a one-way or a return ticket, you could land a better deal then.

Search for affordable Southwest Airlines flights from Williamson County Regional Airport (MWA) to Philadelphia Intl. Airport (PHL) 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 type and itinerary, the best day of the week to book a domestic flight is generally Sunday and the most expensive 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 find out if there’s a direct trip from MWA to PHL with Southwest Airlines or another airline, use our “Nonstop” filter when searching for flights.

Find Southwest Airlines’s earliest flights from MWA to PHL by using our “Early Morning” and “Morning” filters. Not only will you get to where you’re going sooner, early departures also have a 20% less chance of being canceled.**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.

Catch a Southwest Airlines flight from Williamson County Regional Airport (MWA) to Philadelphia, and you’ll probably come in to Philadelphia Intl. Airport (PHL). This is the airline’s main hub here.

Depending on the type of fare you purchased, a fee generally applies if you change or cancel your flight more than 24 hours after confirmation. To secure plane tickets with more flexibility, select our “No cancel fee” or “Changes included” filter while searching for flights. For more details on modifying or canceling your reservation, go to “Trips,” select your flight and tick “Manage Booking.”