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DL21 Flight Status ( London to Seattle )

EXPECTED TO ARRIVE IN 7 HOUR 2 MINUTES
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Departure (DL21 Flight Schedule)

Heathrow ()

flag London, United Kingdom

17:45 BST

Tue 18-Aug-2026

 ON TIME
BST 00:00:00 DAY
arr   

Arrival (DL21 Flight Schedule)

Seattle Tacoma Intl ()

flag Seattle, United States

20:03 PDT

Tue 18-Aug-2026

 EARLY 51 min
PDT 00:00:00 DAY

Flight Radar Checker DL 21

Live Flight Tracker Map

Flight DL21 from London to Seattle is operated by Delta Air Lines. Scheduled time of departure from Heathrow is 17:45 BST and scheduled time of arrival in Seattle Tacoma Intl is 20:03 PDT. The duration of the flight is 10 hours 18 minutes.
 

 

3.5 out of 5 stars / 12 votes

Flight Finder
from Seattle to London

Flight Departure Arrival

06:45		 Seattle Tacoma Intl
()		 Heathrow
()

12:10		 Seattle Tacoma Intl
()		 Heathrow
()

13:45		 Seattle Tacoma Intl
()		 Heathrow
()

15:05		 Seattle Tacoma Intl
()		 Heathrow
()

15:35		 Seattle Tacoma Intl
()		 Heathrow
()

History Flight Information for DL21 from Flight Scanner System

Date Flight Departure Airport Arrival Airport Scheduled Plane Estimated
Departure Arrival Departure Arrival
Tue, 18 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 17:59 BST 12:09 PDT
Mon, 17 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:08 BST 20:32 PDT
Sun, 16 Aug DL21 Heathrow () Seattle Tacoma Intl () 18:30 BST 20:46 PDT 18:58 BST 20:27 PDT
Sat, 15 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:11 BST 19:32 PDT
Fri, 14 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 19:37 BST 20:51 PDT
Wed, 12 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:03 BST 19:10 PDT
Tue, 11 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:10 BST 19:21 PDT
Mon, 10 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 17:54 BST 20:29 PDT
Sun, 09 Aug DL21 Heathrow () Seattle Tacoma Intl () 18:30 BST 20:46 PDT 18:35 BST 20:14 PDT
Sat, 08 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 17:57 BST 20:37 PDT
Fri, 07 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:28 BST 19:44 PDT
Thu, 06 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 19:05 BST 20:32 PDT
Wed, 05 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 17:51 BST 20:24 PDT
Tue, 04 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 17:59 BST 19:18 PDT
Mon, 03 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:17 BST 19:42 PDT
Sun, 02 Aug DL21 Heathrow () Seattle Tacoma Intl () 18:30 BST 20:46 PDT 19:04 BST 20:40 PDT
Sat, 01 Aug DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 17:57 BST 13:48 PDT
Fri, 31 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:10 BST 11:21 PDT
Thu, 30 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:03 BST 19:24 PDT
Wed, 29 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:07 BST 19:29 PDT
Tue, 28 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 17:54 BST 20:03 PDT
Mon, 27 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:07 BST 19:38 PDT
Sun, 26 Jul DL21 Heathrow () Seattle Tacoma Intl () 18:30 BST 20:42 PDT 18:58 BST 21:24 PDT
Sat, 25 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 20:52 BST 20:30 PDT
Fri, 24 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:05 BST 19:21 PDT
Thu, 23 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:37 BST 20:46 PDT
Wed, 22 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:29 BST 20:28 PDT
Tue, 21 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:03 BST 19:26 PDT
Mon, 20 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:13 BST 19:51 PDT
Sun, 19 Jul DL21 Heathrow () Seattle Tacoma Intl () 18:30 BST 20:42 PDT 19:27 BST 20:49 PDT
Sat, 18 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 20:31 BST 19:30 PDT
Fri, 17 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:07 BST 19:32 PDT
Thu, 16 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:06 BST 19:31 PDT
Wed, 15 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 17:51 BST 19:18 PDT
Tue, 14 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:02 BST 20:29 PDT
Mon, 13 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:36 BST 20:10 PDT
Sun, 12 Jul DL21 Heathrow () Seattle Tacoma Intl () 18:30 BST 20:42 PDT (Airbus A333) 19:15 BST 21:17 PDT
Sat, 11 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:16 BST 19:58 PDT
Fri, 10 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 17:52 BST 19:46 PDT
Wed, 08 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 19:17 BST 19:08 PDT
Tue, 07 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:08 BST 19:39 PDT
Mon, 06 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 02:09 BST 19:46 PDT
Sun, 05 Jul DL21 Heathrow () Seattle Tacoma Intl () 18:30 BST 20:42 PDT 18:58 BST 20:29 PDT
Sat, 04 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:14 BST 20:07 PDT
Fri, 03 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:02 BST 19:30 PDT
Thu, 02 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 17:57 BST 19:19 PDT
Flight DL21 delayed 12 times during the last month, and the average delay time was 32 minutes.

Disclaimer for DL21 Flight Radar Data

Flight DL21 from Heathrow to Seattle Tacoma Intl data is collected from different sources. The data is for informational purposes only and PlaneMapper is not responsible for the accuracy and reliability of flight DL21 data.
  1. PlaneMapper
  2. Flights
  3. Delta Air Lines
  4. DL21