Alaska Airlines
AS304Boston to Seattle
Alaska Airlines flight AS304 flies from Boston (BOS) to Seattle Tacoma (SEA), 4,006 km. Over August 2025 to July 2026 it usually arrives about 3 minutes late: 78% of 201 flights arrived within 15 minutes of schedule and 0% were cancelled (US Department of Transportation data).
On-time record, last 12 months
78%
on time (within 15 min)
11%
more than 30 min late
0%
cancelled
+3 min
average arrival vs schedule
Every operation of AS304, August 2025 to July 2026: 201 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as AS304
- Boston (BOS) to Seattle Tacoma (SEA)71 flights
- Seattle Tacoma (SEA) to Orlando (MCO)70 flights
- Boise (BOI) to San Diego (SAN)21 flights
- Seattle Tacoma (SEA) to Miami (MIA)20 flights
- San Francisco (SFO) to Seattle Tacoma (SEA)10 flights
- Orlando (MCO) to Portland (PDX)8 flights
- Seattle Tacoma (SEA) to Chicago O'Hare (ORD)1 flights
Other flights from Boston to Seattle
More about Boston (BOS) and Seattle Tacoma (SEA).
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