-5m
Scheduled
Today's Flight
Scheduled: 5:45 PM
Actual: 5:40 PM
Local Time
Terminal 3 · Gate 25
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Based on 12 flights
Current security wait time at LHR:
3 minutes
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Performance Overview
75%
On Time
(0-15 min) 25%
Delayed
(16-45 min) 0%
Severely Delayed
(>45 min)14-Day Delay Trend
Performance by Day of Week
Recent Activity (Last 7 Days)
Jun 15
Monday
Scheduled: 5:45 PM
Actual: 5:40 PM
-5m
Scheduled
Jun 14
Sunday
Scheduled: 6:30 PM
Actual: 6:16 PM
-14m
Landed
Jun 13
Saturday
Scheduled: 5:45 PM
Actual: 5:36 PM
-9m
Landed
Jun 12
Friday
Scheduled: 5:45 PM
Actual: 5:39 PM
-6m
Landed
Jun 11
Thursday
Scheduled: 5:45 PM
Actual: 5:35 PM
-10m
Landed
Jun 10
Wednesday
Scheduled: 5:45 PM
Actual: 5:41 PM
-4m
Landed
Jun 9
Tuesday
Scheduled: 5:45 PM
Actual: 5:40 PM
-5m
Landed
Flight DL21 FAQ
DL21 is currently Scheduled, running 5 minutes ahead of schedule. Scheduled departure is 5:45 PM local time. Actual time: 5:40 PM.
DL21 departs from Terminal 3, Gate 25 at Heathrow Airport (LHR).
Over the last 14 days, DL21 from LHR to SEA has an average delay of +3.7 minutes based on 12 flights tracked.
DL21 has a 75% on-time rate over the last 14 days, making it moderately reliable. On-time is defined as arriving within 15 minutes of the scheduled time.
The delay trend for DL21 is Improving — delays have been decreasing over the last 14 days.
DL21 is operated by and flies from Heathrow Airport (LHR) to Seattle-Tacoma International Airport (SEA).