Alaska Airlines
AS4Seattle to Washington
Alaska Airlines flight AS4 flies from Seattle Tacoma (SEA) to Washington (DCA), 3,738 km. Over August 2025 to July 2026 it usually arrives about 10 minutes early: 85% of 364 flights arrived within 15 minutes of schedule and 0.5% were cancelled (US Department of Transportation data).
On-time record, last 12 months
85%
on time (within 15 min)
9%
more than 30 min late
0.5%
cancelled
-10 min
average arrival vs schedule
Every operation of AS4, August 2025 to July 2026: 364 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as AS4
- Seattle Tacoma (SEA) to Washington (DCA)364 flights
Other flights from Seattle to Washington
More about Seattle Tacoma (SEA) and Washington (DCA).
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