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Cheap Flights from Philadelphia to Seattle, WA, United States - PHL to SEA

Popular flights from Philadelphia to Seattle

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

Alaska Airlines
Departure Date Return Date Lowest Price
Aug 30, 2016 Sep 8, 2016 $371
Aug 31, 2016 Sep 13, 2016 $371
American Airlines
Departure Date Return Date Lowest Price
Jun 3, 2016 Jun 5, 2016 $366
Jun 3, 2016 Jun 6, 2016 $366
Jun 3, 2016 Jun 9, 2016 $366
Jun 5, 2016 Jun 10, 2016 $366
Jun 5, 2016 Jun 14, 2016 $366
Frontier Airlines
Departure Date Return Date Lowest Price
Aug 25, 2016 Aug 29, 2016 $352
JetBlue Airways
Departure Date Return Date Lowest Price
Sep 1, 2016 Sep 7, 2016 $444
United Airlines
Departure Date Return Date Lowest Price
Jun 3, 2016 Jun 6, 2016 $373
Jun 3, 2016 Jun 10, 2016 $373

How Much Does it Cost to Fly from Philadelphia to Seattle (PHL to SEA)?

We have collected flight cost data from across the web for travel from Philadelphia to Seattle, and have found the average flight price for this trip to be $367.

When Can I Buy the Cheapest Flight from Philadelphia to Seattle (PHL to SEA)?

Airlines can adjust prices for plane tickets from Philadelphia to Seattle based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

How far in advance should you book flights from Philadelphia to Seattle

The chart below shows up-to-date information regarding how far in advance a flight from Philadelphia to Seattle should be booked.

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $723 $480
7-14 days $516 $413
14-21 days $371 $378
21-30 days $366 $370
30-60 days $366 $370
60-90 days $366 $370
90+ days $366 $344

Cheapest Day To Fly from Philadelphia to Seattle

The chart below shows up-to-date information regarding the cheapest days to fly from Philadelphia to Seattle.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$366 $366 $366 $371 $366 $371 $366

Lowest Fares Chart By Month from Philadelphia to Seattle

The chart below shows the lowest fare by month when flying from Philadelphia to Seattle.

Month Origin Destination Carrier Depart Date Return Date Stops Price
May Philadelphia Seattle American 5/25/16 6/5/16 0 $371
June Philadelphia Seattle American 6/3/16 6/5/16 0 $366
July Philadelphia Seattle American 7/12/16 7/19/16 0 $366
August Philadelphia Seattle Frontier 8/25/16 8/29/16 2 $352
September Philadelphia Seattle Frontier 9/8/16 9/12/16 1 $348
October Philadelphia Seattle American 10/6/16 10/9/16 0 $367
November Philadelphia Seattle American 11/1/16 11/7/16 0 $371
December Philadelphia Seattle Spirit 12/9/16 12/12/16 1 $344

Cheapest Weekend Non-Stop Flights for the Next 30 Days from Philadelphia to Seattle

If you're ready to take a trip in the next 30 days and want to fly on the weekend, you might be wondering which weekend is the cheapest to fly. The chart below shows up-to-date data regarding weekend flight prices from Philadelphia to Seattle.

Next 30 Days

SunMonTueWedThuFriSat
1 2 3 4 5 6 7
$795
8 9 10 11 12 13 14
$795 $652
15 16 17 18 19 20 21
$652 $638
22 23 24 25 26 27 28
$638 $371
29 30 31 1 2 3 4
$371 $366
5 6 7 8 9 10 11
$366

Non-Stop vs Connecting Flights from Philadelphia to Seattle (PHL to SEA)

Your Philadelphia to Seattle flight can be significantly cheaper by choosing a multi-stop airline ticket. Although these connecting flights sacrifice some convenience, on average, travelers save 20%-60% when they choose to fly multi-stop versus a direct flight.

The average price for connecting flights from Philadelphia to Seattle is $507.

The average price for non-stop flights from Philadelphia to Seattle is $390.

The chart below shows up to date information regarding non-stop flights from Philadelphia to Seattle.

Nonstop Flight Details from Philadelphia to Seattle
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
American 2 2 2 3 3 3 2 07:35 20:40
Alaska 1 1 1 1 1 1 1 17:50 17:50

Round Trip vs One Way Flights from Philadelphia to Seattle (PHL to SEA)

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from Philadelphia to Seattle. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from Philadelphia to Seattle is $203.

The average price for round trip flights from Philadelphia to Seattle is $506.

Philadelphia to Seattle Flight Questions

Below are some common questions that asked about this flight route:

Question: How long is a direct flight from Philadelphia to Seattle?
Answer: The average Philadelphia to Seattle flight time is 5 hours and 55 minutes.
Question: How many miles are there between Philadelphia and Seattle?
Answer: The distance from Philadelphia to Seattle is 2371 miles.
Question: How common are direct flights from Philadelphia to Seattle?
Answer: There are 24 direct flights from Philadelphia to Seattle.
Question: What is the most popular airline for non-stop flights from Philadelphia to Seattle?
Answer: American Airlines provides 70% of the non-stop flights between Philadelphia and Seattle.
Question: What are the most popular connecting cities when flying from Philadelphia to Seattle?
Answer: Denver, CO

Airlines Flying from Philadelphia to Seattle (PHL to SEA)

Below are the different airlines that fly from Philadelphia to Seattle with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from Philadelphia to Seattle.

Philadelphia to Seattle
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American - X X X X X X X
American ORD X X X X X X X
Alaska - X X X X X X X
JetBlue BOS X X X X X X
Delta JFK X X X X X X X
Frontier DEN X
United SFO X X X X X X X
Southwest DEN X X X X X X X

Airports for Your Route

These pages contain information about the major airports in Philadelphia and Seattle, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Cheap Domestic Flights to Seattle - SEA

FlightsAirlineLowest Price
New York to Seattle American, Alaska, JetBlue, Sun Country, United, Virgin America $304
Washington to Seattle American, Alaska, JetBlue, Frontier, United, Virgin America $266
Baltimore to Seattle American, Alaska, JetBlue, Spirit, United $300
Newark to Seattle American, Alaska, JetBlue, United, Virgin America $304
Hartford to Seattle American, Alaska, United $438
Richmond to Seattle American, Alaska, JetBlue, United $382
Harrisburg to Seattle American, Alaska, United $432
Westchester County to Seattle American, Alaska, United $531
Wilkes - Barre to Seattle American, United $526
Long Island MacArthur to Seattle American, United $561
Allentown - Bethlehem - Easton to Seattle American, United $380
Newburgh to SeattleCheck Dates
Ithaca to Seattle American, United $443
Binghamton to Seattle American, United $476
State College to Seattle American, United $472
Elmira - Corning to Seattle American $562
Salisbury - Ocean City to Seattle American $486
Atlantic City to SeattleCheck Dates
New Haven to Seattle American $600
New York to Los Angeles American, Alaska, JetBlue, Spirit, Sun Country, United, Virgin America $207
New York to Chicago American, Alaska, JetBlue, Spirit, United $76
New York to San Francisco American, Alaska, JetBlue, Sun Country, United, Virgin America $272
New York to Las Vegas American, Alaska, JetBlue, Spirit, United, Virgin America $238
New York to Portland American, Alaska, JetBlue, Sun Country, United, Virgin America $316
New York to Atlanta American, Alaska, Frontier, Spirit, United $168
New York to Dallas - Ft Worth American, Alaska, JetBlue, Spirit, United, Virgin America $109
Washington to Portland American, Alaska, JetBlue, Frontier, Sun Country, United, Virgin America $258
New York to Denver American, Alaska, JetBlue, Frontier, Spirit, Sun Country, United $196

Cheap International Flights to Seattle - SEA

FlightsAirlineLowest Price
New York to Vancouver American, Air Canada, Alaska, JetBlue, Cathay, Frontier, Spirit, Porter, Sun Country, United, Virgin America, WestJet, Great Lakes $361
New York to London Aegean, American, Air Berlin, Air France, Alaska, Finnair, Alitalia, JetBlue, British Airways, airBaltic, Condor, OpenSkies, Aer Lingus, Iberia, Meridiana, KLM, Kuwait, Luxair, Lufthansa, LOT, Thomas Cook, Czech, Austrian, TAROM, SATA, XL Airways, SAS, Brussels, Tap Portugal, United, Air Europa, Virgin Atlantic, City Jet, Great Lakes $649
Cheap Flights from Philadelphia to Seattle, WA, United States, from $352 Round trip from PHL to SEA