How can I find cheap flights from Philadelphia International Airport to Seattle-Tacoma International Airport?
Explore the cheapest one-way and round-trip flights from Philadelphia International Airport to Seattle-Tacoma International Airport over the next 90 days, with one-way fares from JPY 26,250 and round-trip from JPY 59,040. Based on Trip.com's latest 7-day flight data.
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- Cheapest nonstop
PHL 17:566h 9mDirectSEA 21:05Philadelphia - Seattle | Thu, Dec 3 | Alaska Airlines
SEA 21:155h 12mDirectPHL 05:27Seattle - Philadelphia | Sun, Dec 6 | Alaska AirlinesJPY 59,040 JPY 70,63016% off16% offJPY 70,630 JPY 59,040
PHL 18:116h 42mDirectSEA 21:53Philadelphia - Seattle | Sun, Dec 6 | Alaska Airlines
SEA 21:355h 5mDirectPHL 05:40Seattle - Philadelphia | Tue, Dec 8 | Alaska AirlinesJPY 60,280 JPY 70,63015% off15% offJPY 70,630 JPY 60,280
PHL 18:356h 24mDirectSEA 21:59Philadelphia - Seattle | Thu, Dec 3 | American Airlines
SEA 09:155h 7mDirectPHL 17:22Seattle - Philadelphia | Sun, Dec 6 | American AirlinesJPY 60,350 JPY 70,63015% off15% offJPY 70,630 JPY 60,350
PHL 17:566h 9mDirectSEA 21:05Philadelphia - Seattle | Fri, Dec 4 | Alaska Airlines
SEA 21:155h 12mDirectPHL 05:27Seattle - Philadelphia | Fri, Dec 11 | Alaska AirlinesJPY 60,75014% offJPY 70,630 JPY 60,750
PHL 07:006h 7mDirectSEA 10:07Philadelphia - Seattle | Tue, Nov 24 | Alaska Airlines
SEA 21:345h 6mDirectPHL 05:40Seattle - Philadelphia | Tue, Dec 1 | Alaska AirlinesJPY 61,58013% offJPY 70,630 JPY 61,580
PHL 07:026h 6mDirectSEA 10:08Philadelphia - Seattle | Fri, Nov 13 | Alaska Airlines
SEA 21:285h 4mDirectPHL 05:32Seattle - Philadelphia | Fri, Nov 20 | Alaska AirlinesJPY 61,77013% offJPY 70,630 JPY 61,770
PHL 07:026h 6mDirectSEA 10:08Philadelphia - Seattle | Wed, Nov 11 | Alaska Airlines
SEA 08:325h 13mDirectPHL 16:45Seattle - Philadelphia | Wed, Nov 18 | Alaska AirlinesJPY 61,96012% offJPY 70,630 JPY 61,960
PHL 07:006h 28mDirectSEA 10:28Philadelphia - Seattle | Mon, Dec 7 | Alaska Airlines
SEA 09:055h 3mDirectPHL 17:08Seattle - Philadelphia | Mon, Dec 14 | Alaska AirlinesJPY 62,53011% offJPY 70,630 JPY 62,530
PHL 19:006h 38mDirectSEA 22:38Philadelphia - Seattle | Sun, Dec 6 | American Airlines
SEA 09:155h 8mDirectPHL 17:23Seattle - Philadelphia | Tue, Dec 8 | American AirlinesJPY 62,86011% offJPY 70,630 JPY 62,860
PHL 13:0017h 25m1 stopSEA 14:00Philadelphia - Seattle | Tue, Nov 10 | Normal Airline
SEA 15:006hDirectPHL 16:00Seattle - Philadelphia | Thu, Nov 12 | Normal AirlineFind more flightsFind more flights
- Cheapest
PHL 18:408h 31m1 stopSEA 00:11Philadelphia - Seattle | Thu, Dec 3 | Delta Air LinesJPY 26,250 JPY 32,38019% off19% offJPY 32,380 JPY 26,250
PHL 07:056h 19mDirectSEA 10:24Philadelphia - Seattle | Thu, Nov 19 | Delta Air LinesJPY 26,720 JPY 32,38017% off17% offJPY 32,380 JPY 26,720
PHL 07:056h 19mDirectSEA 10:24Philadelphia - Seattle | Fri, Nov 20 | Delta Air LinesJPY 26,870 JPY 32,38017% off17% offJPY 32,380 JPY 26,870
PHL 17:158h 45m1 stopSEA 23:00Philadelphia - Seattle | Thu, Dec 3 | Alaska AirlinesJPY 27,32016% offJPY 32,380 JPY 27,320
PHL 18:356h 15mDirectSEA 21:50Philadelphia - Seattle | Thu, Dec 3 | American AirlinesJPY 27,39015% offJPY 32,380 JPY 27,390
PHL 21:5517h 42m1 stopSEA 12:37Philadelphia - Seattle | Tue, Nov 24 | Frontier AirlinesJPY 27,53015% offJPY 32,380 JPY 27,530
PHL 18:366h 35mDirectSEA 22:11Philadelphia - Seattle | Fri, Nov 20 | American AirlinesJPY 27,65015% offJPY 32,380 JPY 27,650
PHL 21:5517h 42m1 stopSEA 12:37Philadelphia - Seattle | Thu, Nov 26 | Frontier AirlinesJPY 28,05013% offJPY 32,380 JPY 28,050
PHL 16:259h 9m1 stopSEA 22:34Philadelphia - Seattle | Thu, Nov 19 | Alaska AirlinesJPY 28,81011% offJPY 32,380 JPY 28,810
PHL 13:0017h 25m1 stopSEA 14:00Philadelphia - Seattle | Tue, Nov 10 | Normal AirlineFind more flightsFind more flights
- Cheapest nonstop
PHL 07:026h 27mDirectSEA 10:29Philadelphia - Seattle | Thu, Dec 17 | Alaska AirlinesJPY 30,640 JPY 72,11057% off57% offJPY 72,110 JPY 30,640
PHL 18:116h 42mDirectSEA 21:53Philadelphia - Seattle | Thu, Dec 10 | Alaska AirlinesJPY 30,640 JPY 72,11057% off57% offJPY 72,110 JPY 30,640
PHL 07:006h 7mDirectSEA 10:07Philadelphia - Seattle | Thu, Nov 26 | Alaska AirlinesJPY 30,730 JPY 72,11056% off56% offJPY 72,110 JPY 30,730
PHL 18:116h 42mDirectSEA 21:53Philadelphia - Seattle | Wed, Dec 2 | Alaska AirlinesJPY 30,73056% offJPY 72,110 JPY 30,730
PHL 18:146h 14mDirectSEA 21:28Philadelphia - Seattle | Wed, Jan 6 | Alaska AirlinesJPY 30,92056% offJPY 72,110 JPY 30,920
PHL 18:146h 14mDirectSEA 21:28Philadelphia - Seattle | Thu, Jan 7 | Alaska AirlinesJPY 30,95056% offJPY 72,110 JPY 30,950
PHL 18:146h 14mDirectSEA 21:28Philadelphia - Seattle | Fri, Jan 8 | Alaska AirlinesJPY 31,00056% offJPY 72,110 JPY 31,000
PHL 18:116h 42mDirectSEA 21:53Philadelphia - Seattle | Sat, Dec 12 | Alaska AirlinesJPY 31,21056% offJPY 72,110 JPY 31,210
PHL 08:106h 35mDirectSEA 11:45Philadelphia - Seattle | Tue, Dec 1 | American AirlinesJPY 31,56056% offJPY 72,110 JPY 31,560
PHL 13:0017h 25m1 stopSEA 14:00Philadelphia - Seattle | Tue, Nov 10 | Normal AirlineFind more flightsFind more flights
- Cheapest nonstop
PHL 07:056h 19mDirectSEA 10:24Philadelphia - Seattle | Thu, Nov 19 | Delta Air LinesJPY 26,720 JPY 32,38017% off17% offJPY 32,380 JPY 26,720
PHL 07:056h 19mDirectSEA 10:24Philadelphia - Seattle | Fri, Nov 20 | Delta Air LinesJPY 26,870 JPY 32,38017% off17% offJPY 32,380 JPY 26,870
PHL 18:356h 15mDirectSEA 21:50Philadelphia - Seattle | Thu, Dec 3 | American AirlinesJPY 27,390 JPY 32,38015% off15% offJPY 32,380 JPY 27,390
PHL 18:366h 35mDirectSEA 22:11Philadelphia - Seattle | Fri, Nov 20 | American AirlinesJPY 27,65015% offJPY 32,380 JPY 27,650
PHL 18:116h 42mDirectSEA 21:53Philadelphia - Seattle | Thu, Dec 10 | Alaska AirlinesJPY 30,64033% offJPY 45,710 JPY 30,640
PHL 07:026h 27mDirectSEA 10:29Philadelphia - Seattle | Thu, Dec 17 | Alaska AirlinesJPY 30,64033% offJPY 45,710 JPY 30,640
PHL 07:006h 7mDirectSEA 10:07Philadelphia - Seattle | Thu, Nov 26 | Alaska AirlinesJPY 30,73033% offJPY 45,710 JPY 30,730
PHL 18:116h 42mDirectSEA 21:53Philadelphia - Seattle | Wed, Dec 2 | Alaska AirlinesJPY 30,73033% offJPY 45,710 JPY 30,730
PHL 18:146h 14mDirectSEA 21:28Philadelphia - Seattle | Wed, Jan 6 | Alaska AirlinesJPY 30,92032% offJPY 45,710 JPY 30,920
PHL 13:0017h 25m1 stopSEA 14:00Philadelphia - Seattle | Tue, Nov 10 | Normal AirlineFind more flightsFind more flights
- Cheapest nonstop
PHL 17:496h 10mDirectSEA 20:59Philadelphia - Seattle | Sat, Nov 14 | Alaska AirlinesJPY 35,790 JPY 71,84050% off50% offJPY 71,840 JPY 35,790
PHL 17:496h 10mDirectSEA 20:59Philadelphia - Seattle | Mon, Nov 9 | Alaska AirlinesJPY 52,260 JPY 71,84027% off27% offJPY 71,840 JPY 52,260
PHL 07:026h 6mDirectSEA 10:08Philadelphia - Seattle | Wed, Nov 11 | Alaska AirlinesJPY 52,260 JPY 71,84027% off27% offJPY 71,840 JPY 52,260
PHL 07:026h 6mDirectSEA 10:08Philadelphia - Seattle | Sun, Nov 15 | Alaska AirlinesJPY 52,76027% offJPY 71,840 JPY 52,760
PHL 15:008h 46m1 stopSEA 20:46Philadelphia - Seattle | Sat, Nov 14 | Delta Air LinesJPY 37,92047% offJPY 71,840 JPY 37,920
PHL 09:458h 47m1 stopSEA 15:32Philadelphia - Seattle | Sat, Nov 14 | United AirlinesJPY 39,42045% offJPY 71,840 JPY 39,420
PHL 19:117h 46m1 stopSEA 23:57Philadelphia - Seattle | Mon, Nov 9 | Delta Air LinesJPY 54,56024% offJPY 71,840 JPY 54,560
PHL 12:209h 17m1 stopSEA 18:37Philadelphia - Seattle | Wed, Nov 11 | Delta Air LinesJPY 54,56024% offJPY 71,840 JPY 54,560
PHL 18:588h 1m1 stopSEA 23:59Philadelphia - Seattle | Sun, Nov 15 | Delta Air LinesJPY 55,08023% offJPY 71,840 JPY 55,080
PHL 13:0017h 25m1 stopSEA 14:00Philadelphia - Seattle | Tue, Nov 10 | Normal AirlineFind more flightsFind more flights
PHL 07:006h 7mDirectSEA 10:07Philadelphia - Seattle | Thu, Nov 26 | Alaska AirlinesJPY 30,730 JPY 45,71033% off33% offJPY 45,710 JPY 30,730
PHL 07:006h 7mDirectSEA 10:07Philadelphia - Seattle | Wed, Nov 25 | Alaska AirlinesJPY 40,680 JPY 45,71011% off11% offJPY 45,710 JPY 40,680
PHL 18:466h 10mDirectSEA 21:56Philadelphia - Seattle | Fri, Nov 27 | Alaska AirlinesJPY 83,720 JPY 94,07011% off11% offJPY 94,070 JPY 83,720
PHL 18:146h 14mDirectSEA 21:28Philadelphia - Seattle | Wed, Jan 6 | Alaska AirlinesJPY 30,92032% offJPY 45,710 JPY 30,920
PHL 18:146h 14mDirectSEA 21:28Philadelphia - Seattle | Thu, Jan 7 | Alaska AirlinesJPY 30,95032% offJPY 45,710 JPY 30,950
PHL 18:146h 14mDirectSEA 21:28Philadelphia - Seattle | Fri, Jan 8 | Alaska AirlinesJPY 31,00032% offJPY 45,710 JPY 31,000
PHL 18:146h 14mDirectSEA 21:28Philadelphia - Seattle | Tue, Jan 5 | Alaska AirlinesJPY 38,66059% offJPY 94,070 JPY 38,660
PHL 18:356h 15mDirectSEA 21:50Philadelphia - Seattle | Thu, Dec 3 | American AirlinesJPY 27,39015% offJPY 32,380 JPY 27,390
PHL 07:056h 19mDirectSEA 10:24Philadelphia - Seattle | Thu, Nov 19 | Delta Air LinesJPY 26,72017% offJPY 32,380 JPY 26,720
PHL 13:0017h 25m1 stopSEA 14:00Philadelphia - Seattle | Tue, Nov 10 | Normal AirlineFind more flightsFind more flights
Displayed flight fares from Philadelphia to Seattle are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.
Trip.com Price Insights: Flights from Philadelphia International Airport to Seattle-Tacoma International Airport
What is the cheapest month to fly from Philadelphia International Airport to Seattle-Tacoma International Airport?
Based on Trip.com's data from the past 12 months, the cheapest one-way flights from Philadelphia International Airport to Seattle-Tacoma International Airport are usually in March, with an average price of JPY 26,640. It is best to avoid August, when the average price can reach JPY 71,500.
What is the cheapest day of the week to fly from Philadelphia International Airport to Seattle-Tacoma International Airport?
Based on Trip.com's data from the past 12 months, the cheapest departure day from Philadelphia International Airport to Seattle-Tacoma International Airport is Saturday, with average prices usually lower than other days. Avoid departing on Friday as prices are typically highest on that day.
Which airline offers the cheapest flights from Philadelphia International Airport to Seattle-Tacoma International Airport?
The cheapest airline flying from Philadelphia International Airport to Seattle-Tacoma International Airport is Frontier Airlines (from JPY 22,520) among 7 carriers operating this route. Based on Trip.com's latest 7-day flight data.







Find more flights and airlines
What is the flight schedule from Philadelphia International Airport to Seattle-Tacoma International Airport?
Check the schedule for flights from Philadelphia to Seattle and find the flight that best matches your travel plans.
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DL2092
Philadelphia International Airport
08:26
PHL
11:24
SEA
S M T W T F SSearch -
AS370
Philadelphia International Airport
07:02
PHL
10:08
SEA
S M T W T F SSearch -
AA2500
Philadelphia International Airport
18:35
PHL
21:59
SEA
S M T W T F SSearch -
AS443
Philadelphia International Airport
18:46
PHL
21:56
SEA
S M T W T F SSearch -
DL2829
Philadelphia International Airport
18:40
PHL
21:47
SLC
S - - W T - SSearch -
DL2998
Salt Lake City International Airport
22:45
SLC
00:11
SEA
S M T W T F S -
AA1850
Philadelphia International Airport
12:47
PHL
16:06
PHX
S M T W T F SSearch -
AA2177
Phoenix Sky Harbor International Airport
18:28
PHX
20:41
SEA
S M T W T F S -
UA2661
Philadelphia International Airport
06:00
PHL
09:22
SFO
S - - W T F SSearch -
UA2744
San Francisco International Airport
12:22
SFO
14:39
SEA
S M T W T F S -
DL2270
Philadelphia International Airport
12:09
PHL
14:26
ATL
S M T W T F SSearch -
DL714
Hartsfield–Jackson Atlanta International Airport
18:10
ATL
20:46
SEA
S M T W T F S -
F91147
Philadelphia International Airport
17:14
PHL
19:54
ATL
S M T W T F SSearch -
F93923
Hartsfield–Jackson Atlanta International Airport
21:32
ATL
23:08
LAS
S M T W T F S -
F92407
Harry Reid International Airport
07:35
LAS
10:38
SEA
S - - W T - S
About Philadelphia International Airport and Seattle-Tacoma International Airport
Learn about Philadelphia International Airport (PHL) and Seattle-Tacoma International Airport (SEA) — including location, terminals, transportation, and travel tips.
| Flight distance | 3,821.03km |
|---|---|
| Cheapest one-way ticket price | JPY 26,250 |
| Cheapest return ticket price | JPY 56,220 |
FAQs for Philadelphia International Airport to Seattle-Tacoma International Airport Flights
How long is the flight from Philadelphia International Airport to Seattle-Tacoma International Airport?
Philadelphia International Airport to Seattle-Tacoma International Airport takes about 5 hours 30 minutes on average. Actual flight time may vary depending on route, weather and air traffic.How many daily flights are there from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA)?
There are around 3 daily flights from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA).What is the flight schedule from Philadelphia International Airport to Seattle-Tacoma International Airport?
The earliest flight from Philadelphia International Airport to Seattle-Tacoma International Airport departs at 07:00, and the last departs at 19:35, with about 8 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.When are flight tickets from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA) most expensive?
The route from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around JPY 64,120 in November, the most expensive month to book this route.What is the transportation method from the main airport to downtown in Seattle?
- The distance from Seattle-Tacoma International Airport to downtown is about 17km, by taxi about 30 minutes.
Which airline operates the most direct flights from Philadelphia International Airport (PHL) to Seattle-Tacoma International Airport (SEA)?
American Airlines is a very popular airline operating an average of 812 flights per month.What are the cheapest flights from Philadelphia International Airport to Seattle-Tacoma International Airport?
One-way flights from Philadelphia International Airport to Seattle-Tacoma International Airport currently start from JPY 26,250, and round-trip fares start from JPY 56,220. The current lowest fare is a Delta Air Lines flight departing on Thu, Dec 3; prices may vary depending on availability.Which airlines offer direct flights from Philadelphia International Airport to Seattle-Tacoma International Airport?
Yes. Alaska Airlines, American Airlines and Delta Air Lines operate direct flights from Philadelphia International Airport to Seattle-Tacoma International Airport, with an average flight time of 5 hours 16 minutes, and around 30 weekly flights. Actual flight frequency may vary by season.What is the average price of a flight from Philadelphia International Airport to Seattle-Tacoma International Airport?
Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Philadelphia International Airport to Seattle-Tacoma International Airport is JPY 48,430. Prices may vary depending on the departure date, airline, and availability.How many weekly flights are there from Philadelphia International Airport to Seattle-Tacoma International Airport?
Philadelphia International Airport to Seattle-Tacoma International Airport operates around 32 weekly flights, mainly by Alaska Airlines, American Airlines and Delta Air Lines. Actual frequency may vary during holidays and seasonal schedule adjustments.How do I book flights from Philadelphia International Airport to Seattle-Tacoma International Airport on Trip.com?
Enter Philadelphia International Airport and Seattle-Tacoma International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.
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Note: Prices shown on this page are the estimated lowest prices and include all taxes and fees found in the last 24 hours.