Home / Routes / KSEA → KDCA1,238 scheduled

The route from Seattle Tacoma International Airport (KSEA) in Seattle to Ronald Reagan Washington National Airport (KDCA) in Washington. SkyMeter tracks roughly 1,238 scheduled flights on this route across 8 carriers. The most active operator is ASA (ASA). Average block time is 4h 47m. Departures average 34 minutes off schedule, with 68% running more than 15 minutes late. The most common aircraft on this route is the BOEING Boeing 737-800.

Scheduled
1,238
last 480 days
ADS-B observed
216
Airlines
8
Avg dep delay
34m
Late >15 min
68.5%
Cancel rate
1.37%

Recent observed flights

From ADS-B trace data

2026-08-26 15:02  →  2026-08-26 19:59  ·  4h 56m
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2026-08-25 15:09  →  2026-08-25 19:36  ·  4h 27m
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2026-08-25 14:38  →  2026-08-25 19:23  ·  4h 44m
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2026-08-24 14:13  →  2026-08-24 18:45  ·  4h 32m
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2026-08-23 20:55  →  2026-08-24 01:30  ·  4h 34m
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2026-08-23 15:59  →  2026-08-23 20:41  ·  4h 42m
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2026-08-23 14:25  →  2026-08-23 19:08  ·  4h 42m
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2026-08-22 14:58  →  2026-08-22 19:40  ·  4h 42m
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2026-08-22 14:16  →  2026-08-22 19:10  ·  4h 54m
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2026-08-18 20:56  →  2026-08-19 01:32  ·  4h 36m
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Codeshare partnerships

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

sells ASA 708
sells ASA 606
sells ASA 355
sells ASA 355

Looking for the return flight?

View KDCA → KSEA