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DL21 Flight Status ( London to Seattle )

EXPECTED TO ARRIVE IN 1556 HOUR 0 MINUTE
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Departure (DL21 Flight Schedule)

Heathrow ()

flag London, United Kingdom

17:45 BST

Sat 04-Jul-2026

 ON TIME
BST 00:00:00 DAY
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Arrival (DL21 Flight Schedule)

Seattle Tacoma Intl ()

flag Seattle, United States

20:03 PDT

Sat 04-Jul-2026

 LATE 1549 hour 38 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
()

12:05		 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
Sat, 04 Jul DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:03 PDT 18:14 BST 13:39 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
Tue, 30 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:12 BST 13:03 PDT
Mon, 29 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:24 BST 19:18 PDT
Sun, 28 Jun DL21 Heathrow () Seattle Tacoma Intl () 18:30 BST 20:42 PDT 18:59 BST 19:40 PDT
Sat, 27 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 17:59 BST 18:59 PDT
Fri, 26 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:01 BST 19:18 PDT
Thu, 25 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 17:56 BST 19:17 PDT
Wed, 24 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT (Airbus A332) 18:04 BST 20:19 PDT
Tue, 23 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:02 BST 19:29 PDT
Mon, 22 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:11 BST 19:27 PDT
Sun, 21 Jun DL21 Heathrow () Seattle Tacoma Intl () 18:30 BST 20:42 PDT 19:02 BST 20:23 PDT
Sat, 20 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:05 BST 19:13 PDT
Fri, 19 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:10 BST 19:16 PDT
Thu, 18 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:10 BST 19:12 PDT
Wed, 17 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 17:57 BST 19:03 PDT
Tue, 16 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:04 BST 19:12 PDT
Mon, 15 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:07 BST 19:19 PDT
Sun, 14 Jun DL21 Heathrow () Seattle Tacoma Intl () 18:30 BST 20:42 PDT 19:05 BST 20:08 PDT
Sat, 13 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 17:53 BST 19:25 PDT
Fri, 12 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 17:56 BST 19:24 PDT
Thu, 11 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 17:57 BST 19:22 PDT
Wed, 10 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:29 BST 19:58 PDT
Tue, 09 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 20:04 BST 19:25 PDT
Mon, 08 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:02 BST 19:20 PDT
Sun, 07 Jun DL21 Heathrow () Seattle Tacoma Intl () 18:30 BST 20:42 PDT 18:46 BST 15:47 PDT
Sat, 06 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:13 BST 19:26 PDT
Fri, 05 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:00 BST 19:12 PDT
Thu, 04 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:23 BST 20:05 PDT
Wed, 03 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:41 BST 19:42 PDT
Tue, 02 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:57 BST 20:02 PDT
Mon, 01 Jun DL21 Heathrow () Seattle Tacoma Intl () 17:45 BST 20:01 PDT 18:04 BST 19:14 PDT
Flight DL21 delayed 1 times during the last month, and the average delay time was 18 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