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Cheap flights from Seattle to Philadelphia

37 nonstop flights a week, 4 of them today. Operated by 4 airlines, about 5h 8m in the air, 2,373 mi (3,819 km). Tickets from $142.

Flights from Seattle to Philadelphia

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 Seattle to Philadelphia

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

Cheapest one-way $142 17 November 2026, nonstop Cheapest nonstop $142 17 November 2026, Alaska Airlines Cheapest in the next 7 days $142 17 November, Tue Cheapest month November 2026 tickets from $142

Seattle to Philadelphia at a glance

flight time, from 5h 1m to 10h 34m
5h 8m
straight-line distance
2,373 mi (3,819 km)
flights a week
37
flights today
4
first and last departure
08:32 - 21:38
lowest price, nonstop, 17 November
$142
airlines
4

Seattle to Philadelphia flight schedule

37 flights a week, 4 today, 31 seasonal or one-off. Departure and arrival times are local.

FlightDepartsArrivesDurationDaysAircraft
AS 442
Alaska Airlines
08:32 Seattle-Tacoma International
16:45 Philadelphia International, terminal D
5h 13m
Daily
Boeing 737
AA 2882
American Airlines
09:15 Seattle-Tacoma International
17:22 Philadelphia International
5h 7m
Daily
Airbus A320
AA 1174
American Airlines
09:31 Seattle-Tacoma International
17:34 Philadelphia International
5h 3m
Mon, Thu, Fri, Sat, Sun
Airbus A320
AS 442
Alaska Airlines
09:36 Seattle-Tacoma International
17:43 Philadelphia International, terminal D
5h 7m
Mon, Fri, Sat, Sun
Boeing 737-800
AA 2203
American Airlines
12:34 Seattle-Tacoma International
20:35 Philadelphia International
5h 1m
Mon, Thu, Fri, Sun
Airbus A320
AA 2203
American Airlines
12:45 Seattle-Tacoma International
20:50 Philadelphia International
5h 5m
Mon, Thu, Fri, Sun
Airbus A320
AS 371
Alaska Airlines
21:28 Seattle-Tacoma International
05:32 Philadelphia International, terminal D
5h 4m
Daily
Boeing 737-900
AS 371
Alaska Airlines
21:34 Seattle-Tacoma International
05:40 Philadelphia International, terminal D
5h 6m
Mon, Fri, Sat, Sun
Boeing 737
DL 1114
Delta
21:38 Seattle-Tacoma International
05:43 Philadelphia International, terminal D
5h 5m
Daily
Airbus A320

Seasonal and one-off flights

Not operating in the next two weeks. The first of them is on 28 November.

FlightDepartsArrivesDurationDaysAircraft
AA 1242
American Airlines
23:31 Seattle-Tacoma International
07:36 Philadelphia International
5h 5m
Seasonal
Airbus A320
AS 442
Alaska Airlines
09:05 Seattle-Tacoma International
17:08 Philadelphia International, terminal D
5h 3m
Seasonal
Boeing 737
AS 371
Alaska Airlines
21:35 Seattle-Tacoma International
05:40 Philadelphia International, terminal D
5h 5m
Seasonal
Boeing 737-900
AA 771
American Airlines
09:15 Seattle-Tacoma International
17:23 Philadelphia International
5h 8m
Seasonal
Airbus A320
AA 467
American Airlines
13:20 Seattle-Tacoma International
21:27 Philadelphia International
5h 7m
Seasonal
Airbus A320
AS 442
Alaska Airlines
09:18 Seattle-Tacoma International
17:25 Philadelphia International, terminal D
5h 7m
Seasonal
Boeing 737-900
AA 467
American Airlines
12:42 Seattle-Tacoma International
20:44 Philadelphia International
5h 2m
Seasonal
Airbus A320
UA 2478
United Airlines
15:24 Seattle-Tacoma International
04:58 Philadelphia International, terminal D
10h 34m
Seasonal
Boeing 737
UA 1218
United Airlines
19:10 Seattle-Tacoma International
05:31 Philadelphia International, terminal D
7h 21m
Seasonal
Boeing 737-800
AS 371
Alaska Airlines
21:32 Seattle-Tacoma International
05:41 Philadelphia International, terminal D
5h 9m
Seasonal
Boeing 737-900
AA 2500
American Airlines
23:17 Seattle-Tacoma International
07:19 Philadelphia International
5h 2m
Seasonal
Airbus A320
AS 1414
Alaska Airlines
09:18 Seattle-Tacoma International
17:25 Philadelphia International, terminal D
5h 7m
Selected dates
Boeing 737-900
AA 467
American Airlines
12:54 Seattle-Tacoma International
20:56 Philadelphia International
5h 2m
Seasonal
Airbus A320
AA 467
American Airlines
12:48 Seattle-Tacoma International
20:50 Philadelphia International
5h 2m
Seasonal
Airbus A320
AS 442
Alaska Airlines
09:06 Seattle-Tacoma International
17:11 Philadelphia International, terminal D
5h 5m
Seasonal
Boeing 737-900
AA 2358
American Airlines
12:20 Seattle-Tacoma International
20:25 Philadelphia International
5h 5m
Seasonal
Boeing 737
AS 442
Alaska Airlines
08:46 Seattle-Tacoma International
16:56 Philadelphia International, terminal D
5h 10m
Seasonal
Boeing 737-900
AA 2677
American Airlines
11:55 Seattle-Tacoma International
20:07 Philadelphia International
5h 12m
Seasonal
Airbus A320
AA 2437
American Airlines
11:55 Seattle-Tacoma International
20:07 Philadelphia International
5h 12m
Seasonal
Airbus A320
AS 1726
Alaska Airlines
21:45 Seattle-Tacoma International
05:55 Philadelphia International, terminal D
5h 10m
Seasonal
Boeing 737-900
AA 654
American Airlines
12:34 Seattle-Tacoma International
20:55 Philadelphia International
5h 21m
Seasonal
Boeing 737
AA 2763
American Airlines
22:47 Seattle-Tacoma International
07:00 Philadelphia International
5h 13m
Seasonal
Airbus A321
AA 3276
American Airlines
08:00 Seattle-Tacoma International
16:24 Philadelphia International
5h 24m
Seasonal
Airbus A321
AA 3110
American Airlines
12:45 Seattle-Tacoma International
21:13 Philadelphia International
5h 28m
Seasonal
Airbus A321
AA 2763
American Airlines
22:35 Seattle-Tacoma International
06:47 Philadelphia International
5h 12m
Seasonal
Airbus A321
AS 681
Alaska Airlines
15:45 Seattle-Tacoma International
23:55 Philadelphia International, terminal D
5h 10m
Seasonal
Boeing 737-900
AA 3276
American Airlines
08:20 Seattle-Tacoma International
16:42 Philadelphia International
5h 22m
Seasonal
Airbus A321
AA 3110
American Airlines
12:39 Seattle-Tacoma International
21:05 Philadelphia International
5h 26m
Seasonal
Airbus A321
AA 3276
American Airlines
08:10 Seattle-Tacoma International
16:32 Philadelphia International
5h 22m
Seasonal
Airbus A321
AA 3110
American Airlines
12:26 Seattle-Tacoma International
20:48 Philadelphia International
5h 22m
Seasonal
Airbus A321
AA 2763
American Airlines
21:58 Seattle-Tacoma International
06:16 Philadelphia International
5h 18m
Seasonal
Airbus A321

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

Airlines flying Seattle to Philadelphia

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

American Airlines16 a week Alaska Airlines14 a week Delta7 a week United Airlinesfrom 17 December

Airports

Where flights from Seattle to Philadelphia depart and land

Departure from Seattle

Seattle-Tacoma International SEA

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

About the airport

Arrival in Philadelphia

Philadelphia International PHL

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

About the airport

Frequently asked questions

How long is the flight from Seattle to Philadelphia?
A nonstop flight takes 5 hours 8 minutes on average, from 5h 1m to 10h 34m depending on the flight.
How far is Philadelphia from Seattle?
2,373 mi (3,819 km) in a straight line between the cities.
Which airlines fly nonstop from Seattle to Philadelphia?
American Airlines (16 a week), Alaska Airlines (14 a week), Delta (7 a week) and United Airlines.
How many flights a day are there from Seattle to Philadelphia?
4 flights today and 37 a week, about 5.3 a day on average.
When are the first and last flights from Seattle to Philadelphia?
The first departure is at 08:32 (AS442), the last at 21:38 (DL1114). Local time.
What is the cheapest upcoming date to fly from Seattle to Philadelphia?
17 November 2026 (Tuesday): from $142 one way, nonstop, by recent searches. The search shows the price for your dates.
Which airline is the cheapest from Seattle to Philadelphia?
Alaska Airlines: nonstop tickets from $142 on 17 November by recent searches. Prices change daily, so compare the sellers in the search.
What is the time difference between Seattle and Philadelphia?
Philadelphia is 3 hours ahead of Seattle. Schedule times on this page are local to each airport.
Which Seattle airport do flights to Philadelphia leave from?
Seattle-Tacoma International (37 a week).