Home / Routes / KSEA → KPHL1,282 scheduled

The route from Seattle Tacoma International Airport (KSEA) in Seattle to Philadelphia International Airport (KPHL) in Philadelphia. SkyMeter tracks roughly 1,282 scheduled flights on this route across 11 carriers. The most active operator is ASA (ASA). Average block time is 5h 1m. Departures average 35 minutes off schedule, with 66% running more than 15 minutes late. The most common aircraft on this route is the AIRBUS Airbus A321.

Scheduled
1,282
last 445 days
ADS-B observed
424
Airlines
11
Avg dep delay
35m
Late >15 min
65.9%
Cancel rate
1.48%

Recent observed flights

From ADS-B trace data

2026-07-19 18:48  →  2026-07-19 23:31  ·  4h 43m
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2026-07-19 15:36  →  2026-07-19 20:13  ·  4h 37m
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2026-07-19 05:26  →  2026-07-19 09:54  ·  4h 28m
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2026-07-19 04:25  →  2026-07-19 08:58  ·  4h 33m
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2026-07-18 21:00  →  2026-07-19 01:35  ·  4h 35m
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2026-07-18 17:54  →  2026-07-18 22:36  ·  4h 41m
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2026-07-18 15:19  →  2026-07-18 20:39  ·  5h 20m
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2026-07-18 05:42  →  2026-07-18 10:28  ·  4h 45m
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2026-07-18 05:25  →  2026-07-18 10:17  ·  4h 51m
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2026-07-18 05:13  →  2026-07-18 09:56  ·  4h 43m
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Codeshare partnerships

Marketing carriers selling tickets on this route under their own flight numbers

sells ASA 639
sells ASA 552
sells ASA 134
sells AAL 87
sells AAL 69
sells ASA 69
sells AAL 13

Looking for the return flight?

View KPHL → KSEA