AS688 SEA → SFO

Alaska Airlines · Seattle, WA to San Francisco, CA · 209 flights observed, 2025-10-26 to 2026-06-09 · 679 mi

This flight has been getting less reliable recently — 2026-06's on-time rate (11%) is well below the 58% average from earlier months.

AS688 covers more than one route in the data window — the stats below are for SEA → SFO, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
55%
Median delay
+12 min
90th percentile
+76 min
Cancellation rate
0%

How often is AS688 on time?

Across 209 flights on SEA → SFO from 2025-10-26 to 2026-06-09, AS688 arrived within 15 minutes of schedule 55% of the time. The median arrival delay was +12 min, and the worst 10% of flights arrived +76 min or later. 0% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time11455%
16-30 min2914%
31-60 min2914%
61-120 min2914%
2+ hrs73%

Performance by month

MonthFlightsOn-timeAvg delay
2025-10667%+27 min
2025-112972%+9 min
2025-122458%+14 min
2026-013090%+6 min
2026-022677%+6 min
2026-032752%+27 min
2026-042730%+41 min
2026-053017%+50 min
2026-06911%+69 min

Performance by day of week

DayFlightsOn-time
Mon3253%
Tue3269%
Wed2969%
Thu3155%
Fri3247%
Sat2157%
Sun3135%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…