₹12,739 Cheap Flights from Seattle (SEA) to Philadelphia (PHL)

View ₹12,739 flight on Thu, 14 Aug 2025Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 25% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at ₹12,739 for one-way flights and ₹25,473 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 4 Sep - Wed, 10 Sep
SEA
Seattle
PHL
Philadelphia
₹25,473 Return, found 5 days ago
₹25,473
Return
found 5 days ago
Select Delta flight, departing Thu, 4 Sep from Seattle to Philadelphia, returning Wed, 10 Sep, priced at ₹25,473 found 5 days ago
Delta
Thu, 4 Sep - Wed, 10 Sep
SEA
Seattle
PHL
Philadelphia
₹28,139 Return, found 5 days ago
₹28,139
Return
found 5 days ago
Select Delta flight, departing Thu, 4 Sep from Seattle to Philadelphia, returning Wed, 10 Sep, priced at ₹28,139 found 5 days ago
Delta
Thu, 4 Sep - Wed, 10 Sep
SEA
Seattle
PHL
Philadelphia
₹28,939 Return, found 5 days ago
₹28,939
Return
found 5 days ago
Select Delta flight, departing Thu, 4 Sep from Seattle to Philadelphia, returning Wed, 10 Sep, priced at ₹28,939 found 5 days ago
Delta
Thu, 4 Sep - Wed, 10 Sep
SEA
Seattle
PHL
Philadelphia
₹29,773 Return, found 5 days ago
₹29,773
Return
found 5 days ago
Select Delta flight, departing Thu, 4 Sep from Seattle to Philadelphia, returning Wed, 10 Sep, priced at ₹29,773 found 5 days ago
United
Thu, 4 Sep - Wed, 10 Sep
SEA
Seattle
PHL
Philadelphia
₹30,220 Return, found 5 days ago
₹30,220
Return
found 5 days ago
Select United flight, departing Thu, 4 Sep from Seattle to Philadelphia, returning Wed, 10 Sep, priced at ₹30,220 found 5 days ago
Delta
Thu, 9 Oct - Wed, 15 Oct
SEA
Seattle
PHL
Philadelphia
₹30,799 Return, found 6 days ago
₹30,799
Return
found 6 days ago
Select Delta flight, departing Thu, 9 Oct from Seattle to Philadelphia, returning Wed, 15 Oct, priced at ₹30,799 found 6 days ago
Delta
Thu, 4 Sep - Wed, 10 Sep
SEA
Seattle
PHL
Philadelphia
₹31,600 Return, found 5 days ago
₹31,600
Return
found 5 days ago
Select Delta flight, departing Thu, 4 Sep from Seattle to Philadelphia, returning Wed, 10 Sep, priced at ₹31,600 found 5 days ago
American Airlines
Thu, 4 Sep - Wed, 10 Sep
SEA
Seattle
PHL
Philadelphia
₹32,373 Return, found 5 days ago
₹32,373
Return
found 5 days ago
Select American Airlines flight, departing Thu, 4 Sep from Seattle to Philadelphia, returning Wed, 10 Sep, priced at ₹32,373 found 5 days ago
American Airlines
Thu, 4 Sep - Wed, 10 Sep
SEA
Seattle
PHL
Philadelphia
₹32,394 Return, found 5 days ago
₹32,394
Return
found 5 days ago
Select American Airlines flight, departing Thu, 4 Sep from Seattle to Philadelphia, returning Wed, 10 Sep, priced at ₹32,394 found 5 days ago
Delta
Thu, 4 Sep - Wed, 10 Sep
SEA
Seattle
PHL
Philadelphia
₹32,434 Return, found 5 days ago
₹32,434
Return
found 5 days ago
Select Delta flight, departing Thu, 4 Sep from Seattle to Philadelphia, returning Wed, 10 Sep, priced at ₹32,434 found 5 days ago

Find the cheapest month to fly from Seattle (SEA) to Philadelphia (PHL)

September is typically the cheapest month to fly

From ₹11,771 - ₹22,869 per traveller.

Graph displaying average flight prices per month

Flight from Seattle to Philadelphia route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Philadelphia Intl.
Return price
₹25,473
Distance
3794 km
Average flight time
9 hours 26 mins

Seattle to Philadelphia Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Seattle to Philadelphia will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Philadelphia.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with SEA to PHL flights that won’t make your bank account wince. Ready to temporarily leave behind Seattle for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to PHL with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from Seattle - Tacoma Intl. Airport (SEA) to PHL?
The lowest price advertised for a round-trip journey between SEA and Philadelphia Airport is ₹25,473. But you better act fast. This price is taken from fares quoted within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to Philadelphia Airport?
Most flights can be cancelled online, but each airline has different terms and conditions. If you do decide to cancel your flight, go to our Customer Service Portal and follow the instructions.
How do I find cheap flights from SEA to PHL that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SEA to Philadelphia Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Seattle - Tacoma Intl. Airport (SEA) to Philadelphia Intl. Airport (PHL)?
You'll be soaring through the sky for a while, as the flight distance from SeaTac to Philadelphia is 3,800 kilometres. Put together a playlist of your favourite songs before leaving home to keep yourself entertained during the journey.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Philadelphia Intl. Airport (PHL)?
Alaska Airlines (AS) is a top choice. It operates 30 flights from Sea-Tac Airport to Philadelphia Intl. Airport (PHL) each month. Love some more options? Check out the ticket prices from American Airlines (AA). This carrier offers 30 flights a month between these destinations.
Are Sea-Tac Airport to PHL flight tickets cheaper when they're purchased at the last minute?
Flight tickets from SEA to PHL are available up to a year prior to departure on Expedia. And although you may pick up a fantastic last-minute deal, it's never something you can count on. Also, booking your flights well in advance means you'll have more choices — and you can avoid getting caught in the dreaded middle seat! We regularly update our fares to bring you the biggest bargains, so keep checking in for all the latest specials.

Explore a world of travel with Expedia

*Available to Expedia members.