Delta Air Lines DL21 Flight Status for 6 October 2026
Delta Air Lines
DL21.Airbus A330-941
Estimated
18:30 BST
Scheduled
18:55
BST
25m Delay
LHR · T3
London Heathrow Airport, London, United Kingdom
10h 25m
Direct
20:55 PDT
Scheduled
SEA
Seattle Tacoma International Airport, Seattle, United States
FLIGHT PERFORMANCE
50%
On-Time
Based on data for the past 6 days
DL21 Flight Information
Type
International Flight
Current Status
Estimated
Route
Departure London (LHR), United Kingdom and arriving at Seattle (SEA), United States
Airline
Delta Air Lines (DL)
Aircraft
Airbus A330-941
Flight Duration
10 hour 25 minutes
Flight Distance
7701 kms
Flight History for DL21
Historical records show that the last DL21 flight departed on Sun, Oct 4 from LHR at approximately 18:55. This flight is expected to arrive in SEA at 20:55.
| DATE | ROUTE | AIRCRAFT | DEPARTURE | ARRIVAL | STATUS |
|---|---|---|---|---|---|
| Sun, Oct 4 | London (LHR) → Seattle (SEA) | A339 | 18:55 | 20:55 | Estimated |
| Sat, Oct 3 | London (LHR) → Seattle (SEA) | A339 | 17:55 | 19:23 | Landed |
| Fri, Oct 2 | London (LHR) → Seattle (SEA) | A339 | 18:09 | 19:39 | Landed |
| Thu, Oct 1 | London (LHR) → Seattle (SEA) | A339 | 18:08 | 19:26 | Landed |
| Wed, Sep 30 | London (LHR) → Seattle (SEA) | A339 | 17:45 | 20:10 | Canceled |
| Tue, Sep 29 | London (LHR) → Seattle (SEA) | A339 | 17:50 | 19:14 | Landed |
| Mon, Sep 28 | London (LHR) → Seattle (SEA) | A339 | 17:53 | 19:25 | Landed |
| Sun, Sep 27 | London (LHR) → Seattle (SEA) | A339 | 18:53 | 20:22 | Landed |
DL21 On-Time Performance
Based on the average performance of this flight over the last 6 trips, the on-time departure rate of DL21 is 50% (Late on average 16 minutes), and the on-time arrival rate is 100% (Late on average 0 minutes).
On-Time Departures
50%
Punctuality
Late on average
16
minutes
Early
0%
On time
50%
30 mins late
50%
60 mins late
0%
90 mins late
0%
Cancelled
16%
On-Time Arrivals
100%
Punctuality
Late on average
0
minutes
Early
100%
On time
0%
30 mins late
0%
60 mins late
0%
90 mins late
0%
Cancelled
16%
Secure Your Travel Plans
Travel Insurance starting at ₹30/day*
*Standard T&C apply.
Flight Tracker FAQs
-
Q: Which terminal and gate does DL21 depart from and arrive at?
Ans: DL21 departs from Terminal T3, Gate 19 at London Heathrow Airport and arrives at Terminal , Gate at Seattle Tacoma International Airport. -
Q: What time will DL21 land at Seattle Tacoma International Airport?
Ans: The estimated landing time for DL21 at Seattle Tacoma International Airport is 20:55 (PDT). -
Q: What is the total flight time for DL21?
Ans: The total scheduled flight duration from London Heathrow Airport to Seattle Tacoma International Airport is 10h 25m.
