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Cheap flights from Philadelphia to Seattle

32 nonstop flights a week, 4 of them today. Operated by 4 airlines, about 6h 21m in the air, 2,373 mi (3,819 km). Tickets from $123.

Flights from Philadelphia to Seattle

Pick a departure date to see flights and seller prices

We search agencies and airlines for your day: nonstop and connecting flights, baggage, departure and arrival times.

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Best fares from Philadelphia to Seattle

Lowest one-way prices found by recent searches for the next 120 days; press a card to search that date

Cheapest one-way $123 19 November 2026, nonstop Cheapest nonstop $123 19 November 2026, Alaska Airlines Cheapest in the next 7 days $228 14 November, Sat Cheapest weekend departure $228 Sat, 14 November 2026 Cheapest month November 2026 tickets from $123

Philadelphia to Seattle at a glance

flight time, from 6h 5m to 10h 38m
6h 21m
straight-line distance
2,373 mi (3,819 km)
flights a week
32
flights today
4
first and last departure
07:00 - 19:00
lowest price, nonstop, 19 November
$123
average across months
$197
airlines
4

Philadelphia to Seattle ticket prices by month

Lowest one-way fare found by recent searches

Cheapest month: November 2026, tickets from $123. Prices come from searches over the last few days; check the search for your exact date.

The most expensive month is January 2027: from $264. The average across months is $197.

Philadelphia to Seattle flight schedule

32 flights a week, 4 today, 24 seasonal or one-off. Departure and arrival times are local.

FlightDepartsArrivesDurationDaysAircraft
AS 370
Alaska Airlines
07:00 Philadelphia International, terminal D
10:07 Seattle-Tacoma International
6h 7m
Mon, Fri, Sat, Sun
Boeing 737-900
DL 2092
Delta
07:00 Philadelphia International, terminal D
10:05 Seattle-Tacoma International
6h 5m
Daily
Airbus A320
AS 370
Alaska Airlines
07:02 Philadelphia International, terminal D
10:08 Seattle-Tacoma International
6h 6m
Daily
Boeing 737-900
AA 2203
American Airlines
08:10 Philadelphia International
11:34 Seattle-Tacoma International
6h 24m
Mon, Thu, Fri, Sun
Airbus A320
AS 443
Alaska Airlines
17:49 Philadelphia International, terminal D
20:59 Seattle-Tacoma International
6h 10m
Daily
Boeing 737
AA 2500
American Airlines
18:35 Philadelphia International
21:59 Seattle-Tacoma International
6h 24m
Daily
Airbus A320
AS 443
Alaska Airlines
18:46 Philadelphia International, terminal D
21:56 Seattle-Tacoma International
6h 10m
Mon, Fri, Sat, Sun
Boeing 737-800
AA 2500
American Airlines
19:00 Philadelphia International
22:31 Seattle-Tacoma International
6h 31m
Mon, Thu, Fri, Sat, Sun
Airbus A320

Seasonal and one-off flights

Not operating in the next two weeks. The first of them is on 1 December.

FlightDepartsArrivesDurationDaysAircraft
UA 433
United Airlines
09:20 Philadelphia International, terminal D
16:22 Seattle-Tacoma International
10h 2m
Seasonal
Boeing 737
AS 443
Alaska Airlines
18:11 Philadelphia International, terminal D
21:53 Seattle-Tacoma International
6h 42m
Seasonal
Boeing 737
AA 467
American Airlines
08:45 Philadelphia International
12:19 Seattle-Tacoma International
6h 34m
Seasonal
Airbus A320
AS 370
Alaska Airlines
07:01 Philadelphia International, terminal D
10:28 Seattle-Tacoma International
6h 27m
Seasonal
Boeing 737-900
AA 467
American Airlines
08:10 Philadelphia International
11:42 Seattle-Tacoma International
6h 32m
Seasonal
Airbus A320
AS 443
Alaska Airlines
18:30 Philadelphia International, terminal D
21:57 Seattle-Tacoma International
6h 27m
Seasonal
Boeing 737-900
AA 2500
American Airlines
18:48 Philadelphia International
22:17 Seattle-Tacoma International
6h 29m
Seasonal
Airbus A320
UA 433
United Airlines
09:00 Philadelphia International, terminal D
16:38 Seattle-Tacoma International
10h 38m
Seasonal
Boeing 737
AS 443
Alaska Airlines
18:14 Philadelphia International, terminal D
21:28 Seattle-Tacoma International
6h 14m
Seasonal
Boeing 737-900
AA 2311
American Airlines
08:27 Philadelphia International
11:52 Seattle-Tacoma International
6h 25m
Seasonal
Boeing 737
AA 851
American Airlines
08:40 Philadelphia International
12:11 Seattle-Tacoma International
6h 31m
Seasonal
Airbus A320
UA 433
United Airlines
09:30 Philadelphia International, terminal D
16:09 Seattle-Tacoma International
9h 39m
Seasonal
Boeing 737
AS 442
Alaska Airlines
17:56 Philadelphia International, terminal D
21:05 Seattle-Tacoma International
6h 9m
Seasonal
Boeing 737-900
AA 2661
American Airlines
08:40 Philadelphia International
12:11 Seattle-Tacoma International
6h 31m
Seasonal
Airbus A320
AS 1725
Alaska Airlines
07:00 Philadelphia International, terminal D
10:09 Seattle-Tacoma International
6h 9m
Seasonal
Boeing 737-900
AA 654
American Airlines
08:25 Philadelphia International
11:34 Seattle-Tacoma International
6h 9m
Seasonal
Boeing 737
AA 2763
American Airlines
18:08 Philadelphia International
21:23 Seattle-Tacoma International
6h 15m
Seasonal
Airbus A321
AA 3110
American Airlines
08:34 Philadelphia International
11:44 Seattle-Tacoma International
6h 10m
Seasonal
Airbus A321
AA 2763
American Airlines
18:00 Philadelphia International
21:18 Seattle-Tacoma International
6h 18m
Seasonal
Airbus A321
AA 3259
American Airlines
19:35 Philadelphia International
22:58 Seattle-Tacoma International
6h 23m
Seasonal
Airbus A321
AS 671
Alaska Airlines
11:00 Philadelphia International, terminal D
14:09 Seattle-Tacoma International
6h 9m
Seasonal
Boeing 737-900
AA 2763
American Airlines
18:05 Philadelphia International
21:19 Seattle-Tacoma International
6h 14m
Seasonal
Airbus A321
AA 3110
American Airlines
08:20 Philadelphia International
11:26 Seattle-Tacoma International
6h 6m
Seasonal
Airbus A321
AA 2763
American Airlines
17:44 Philadelphia International
20:57 Seattle-Tacoma International
6h 13m
Seasonal
Airbus A321

Days of the week are taken from the schedule for the next 14 days; schedules change by season. Seattle is 3 hours behind Philadelphia. The search shows seat availability and the price for your date.

Airlines flying Philadelphia to Seattle

Flights a week by schedule and the cheapest nonstop fare of each airline found by recent searches

Alaska Airlines14 a week American Airlines11 a week Delta7 a week United Airlinesfrom 1 December

Airports

Where flights from Philadelphia to Seattle depart and land

Departure from Philadelphia

Philadelphia International PHL

32 flights a week, terminal D, 7 mi (11 km) from the city centre

About the airport

Arrival in Seattle

Seattle-Tacoma International SEA

32 flights a week, 11 mi (18 km) from the city centre

About the airport

When to visit Seattle

Weather by month

Best time to visit: May, June, July, August and September, +17° to +25° by day. In November it is +10° by day and +5° at night, with 17 rainy days.

Jan
+8° +2° 16 days
Feb
+8° +2° 14 days
Mar
+11° +4° 15 days
Apr
+13° +6° 14 days
May
+17° +9° 11 days
Jun
+21° +12° 7 days
Jul
+25° +15° 1 days
Aug
+25° +15° 6 days
Sep
+21° +13° 7 days
Oct
+15° +9° 14 days
Nov
+10° +5° 17 days
Dec
+8° +4° 20 days

Daytime and night temperatures in °C, rainy days. Months with the most comfortable weather are in green. Long-term averages.

Frequently asked questions

How long is the flight from Philadelphia to Seattle?
A nonstop flight takes 6 hours 21 minutes on average, from 6h 5m to 10h 38m depending on the flight.
How far is Seattle from Philadelphia?
2,373 mi (3,819 km) in a straight line between the cities.
Which airlines fly nonstop from Philadelphia to Seattle?
Alaska Airlines (14 a week), American Airlines (11 a week), Delta (7 a week) and United Airlines.
How many flights a day are there from Philadelphia to Seattle?
4 flights today and 32 a week, about 4.6 a day on average.
When are the first and last flights from Philadelphia to Seattle?
The first departure is at 07:00 (AS370), the last at 19:00 (AA2500). Local time.
What is the cheapest month to fly from Philadelphia to Seattle?
November 2026: tickets from $123. The most expensive is January 2027, from $264.
What is the cheapest upcoming date to fly from Philadelphia to Seattle?
19 November 2026 (Thursday): from $123 one way, nonstop, by recent searches. The search shows the price for your dates.
Which airline is the cheapest from Philadelphia to Seattle?
Alaska Airlines: nonstop tickets from $123 on 19 November by recent searches. Prices change daily, so compare the sellers in the search.
What is the time difference between Philadelphia and Seattle?
Seattle is 3 hours behind Philadelphia. Schedule times on this page are local to each airport.
Which Philadelphia airport do flights to Seattle leave from?
Philadelphia International (32 a week).