Cheap Flights from Seattle (SEA) to Philadelphia (PHL)

Popular airlines from Seattle-Tacoma International Airport (SEA) to Philadelphia Intl. Airport (PHL)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save on select hotels after you book a flight*
  • trophy illustration

    Find the right fit

    We search billions of combinations of flights to help you find your next adventure
Flights from Seattle (SEA) to Philadelphia (PHL)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Philadelphia Intl.
Distance
3794 km
Average flight time
8 hours 5 mins

Seattle to Philadelphia Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Seattle to Philadelphia offer the perfect respite. Not only does exploring Philadelphia provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Seattle to Philadelphia may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Philadelphia are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Philadelphia more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Philadelphia is now!

Frequently asked questions

How long does it take to fly from Sea-Tac Airport to Philadelphia Airport?
With Alaska Airlines, a direct flight takes roughly 5 hours and 12 minutes. Step on board the 9:33PM flight from SEA and touch down at Philadelphia Intl. Airport (PHL) at 5:45AM. Grab a top deal on this route when you book your ticket with Expedia.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Philadelphia Intl. Airport (PHL) last minute?
Booking your journey from Sea-Tac Airport to PHL last minute could save you a tidy sum if you get lucky and find a real bargain. However, tickets usually don't get cheaper closer to the departure date. If you choose to wait, flights could also be booked out or the best seats taken (because who wants the middle seat?). If you don't want to risk it, book well ahead of the date you want to leave. Don't forget that some of the biggest bargains can be found up to 12 months in advance. If your favorite carrier hasn't released its fares yet, check back regularly as deals are constantly updated on Expedia.
What airports do you fly into for Philadelphia from Seattle?
From Seattle, you can get to Philadelphia via Philadelphia Intl. Airport (PHL), Atlantic City Intl. Airport (ACY) and Lehigh Valley Intl. Airport (ABE). Research which airport is right for you before making your decision. If you decide on Philadelphia Intl. Airport (PHL), it's around 11 kilometers southwest of downtown. Use the dough you save when booking your ticket with Expedia to enjoy the city's popular sights, such as Liberty Bell Center and Independence Hall.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to Philadelphia Airport?
Between 9:00 PM - 10:00 PM is when you'll find lots of Alaska Airlines flights going from SEA to Philadelphia Intl. Airport (PHL). Our useful tip? Book a flight that departs in the morning. With air traffic yet to build up around airports, your odds of jumping on a delay-free flight are higher.
Can I change the date of my flight from Sea-Tac Airport to PHL?
You can easily make changes to your SEA to Philadelphia Intl. Airport (PHL) ticket via the Expedia Trips portal. But before you begin, read through the rules and conditions in your itinerary to find out what the airline will allow you to do and whether fees apply. Some airlines have a change fee per person, on top of any difference in prices. However, if you booked in the last 24 hours, you may be able to cancel for free and book new flights. You can also take a look at our Customer Service portal for more advice and to connect with our Virtual Agent.

Explore a world of travel with Expedia