DL3629 BOI → SEA

Delta Air Lines · Boise, ID to Seattle, WA · 16 flights observed, 2025-12-20 to 2026-01-04 · 399 mi

This flight is usually on time, but has a real long-delay tail — typical (median) delay is -19 min, while the worst 10% run +52 min or later.

DL3629 covers more than one route in the data window — the stats below are for BOI → SEA, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
81%
Median delay
-19 min
90th percentile
+52 min
Cancellation rate
0%

How often is DL3629 on time?

Across 16 flights on BOI → SEA from 2025-12-20 to 2026-01-04, DL3629 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -19 min, and the worst 10% of flights arrived +52 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time1381%
16-30 min00%
31-60 min16%
61-120 min16%
2+ hrs16%

Performance by month

MonthFlightsOn-timeAvg delay
2025-121283%+11 min
2026-01475%-7 min

Performance by day of week

DayFlightsOn-time
Mon250%
Tue2100%
Wed250%
Thu250%
Fri2100%
Sat3100%
Sun3100%

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