Cheap Flights From Seattle - Tacoma Intl. (SEA) To Philadelphia Intl. (PHL)

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

The cheapest flights to Philadelphia Intl. found within the past 7 days were CA $374 round trip and CA $223 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Apr 30 - Wed, May 6
SEA
Seattle
PHL
Philadelphia
CA $374 Roundtrip, found 4 days ago
CA $374
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Apr 30 from Seattle to Philadelphia, returning Wed, May 6, priced at CA $374 found 4 days ago
Tue, Apr 21 - Tue, Apr 28
SEA
Seattle
PHL
Philadelphia
CA $379 Roundtrip, found 15 hours ago
CA $379
Roundtrip
found 15 hours ago
Select Alaska Airlines flight, departing Tue, Apr 21 from Seattle to Philadelphia, returning Tue, Apr 28, priced at CA $379 found 15 hours ago
Wed, Apr 29 - Mon, May 4
SEA
Seattle
PHL
Philadelphia
CA $382 Roundtrip, just found
CA $382
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Apr 29 from Seattle to Philadelphia, returning Mon, May 4, priced at CA $382 just found
Mon, Mar 30 - Sun, Apr 5
SEA
Seattle
PHL
Philadelphia
CA $384 Roundtrip, found 3 days ago
CA $384
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Mar 30 from Seattle to Philadelphia, returning Sun, Apr 5, priced at CA $384 found 3 days ago
Mon, Jun 1 - Sat, Jul 4
SEA
Seattle
PHL
Philadelphia
CA $425 Roundtrip, found 2 days ago
CA $425
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Mon, Jun 1 from Seattle to Philadelphia, returning Sat, Jul 4, priced at CA $425 found 2 days ago
Sat, Apr 18 - Sat, Apr 25
SEA
Seattle
PHL
Philadelphia
CA $430 Roundtrip, found 5 days ago
CA $430
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sat, Apr 18 from Seattle to Philadelphia, returning Sat, Apr 25, priced at CA $430 found 5 days ago
Wed, Apr 29 - Mon, May 4
SEA
Seattle
PHL
Philadelphia
CA $432 Roundtrip, just found
CA $432
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Apr 29 from Seattle to Philadelphia, returning Mon, May 4, priced at CA $432 just found
Thu, Apr 16 - Wed, Apr 22
SEA
Seattle
PHL
Philadelphia
CA $434 Roundtrip, found 6 days ago
CA $434
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Apr 16 from Seattle to Philadelphia, returning Wed, Apr 22, priced at CA $434 found 6 days ago
Wed, Apr 29 - Mon, May 4
SEA
Seattle
PHL
Philadelphia
CA $436 Roundtrip, just found
CA $436
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Apr 29 from Seattle to Philadelphia, returning Mon, May 4, priced at CA $436 just found
Thu, Mar 19 - Sun, Mar 22
SEA
Seattle
PHL
Philadelphia
CA $446 Roundtrip, found 6 days ago
CA $446
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Thu, Mar 19 from Seattle to Philadelphia, returning Sun, Mar 22, priced at CA $446 found 6 days ago

Frequently asked questions

Are there direct flights from SEA to Philadelphia Airport?
Your next incredible adventure is on the other side of a single flight. You can fly direct from Seattle - Tacoma Intl. Airport (SEA) to PHL with multiple airlines, including American Airlines and Alaska Airlines.
What airlines fly from SEA to Philadelphia Airport?
There are a few airlines that advertise direct flights from Seattle - Tacoma Intl. Airport (SEA) to Philadelphia Airport. American Airlines (AA) is reputable, and operates approximately 52 flights each month. You may want to also look up the deals available through Alaska Airlines (AS). Another leading airline, it operates 30 flights each month on the Seattle to Philadelphia route. Be sure to compare the two airlines to score the best fare.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.

Popular Flight Routes from Seattle (SEA)

Travelers at SEA love to visit these top cities. Roam to the top destinations from Seattle (SEA) today with the cheap prices from Travelocity!

Popular Flight Routes from Philadelphia (PHL)

Travelers at PHL love to visit these top cities. Roam to the top destinations from Philadelphia(PHL) today with the cheap prices from Travelocity!

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.