| LAST SEEN 6 HOUR 3 MINUTES AGO |
![]() | ![]() |

3.5 out of 5 stars / 12 votes
| Date | Flight | Departure Airport | Arrival Airport | Scheduled | Plane | Estimated | ||
|---|---|---|---|---|---|---|---|---|
| Departure | Arrival | Departure | Arrival | |||||
| Tue, 05 May | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:11 PDT | 17:54 BST | 11:12 PDT | |
| Mon, 04 May | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:11 PDT | 18:06 BST | 19:26 PDT | |
| Sun, 03 May | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 18:30 BST | 20:53 PDT | 21:06 BST | 22:24 PDT | |
| Sat, 02 May | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:11 PDT | 18:04 BST | 19:38 PDT | |
| Fri, 01 May | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:11 PDT | 19:07 BST | 20:47 PDT | |
| Thu, 30 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 20:04 BST | 13:06 PDT | |
| Wed, 29 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 18:07 BST | 19:31 PDT | |
| Tue, 28 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 17:55 BST | 19:06 PDT | |
| Mon, 27 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 17:57 BST | 19:08 PDT | |
| Sun, 26 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 18:30 BST | 20:46 PDT | 18:49 BST | 19:56 PDT | |
| Sat, 25 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | N860NW (Airbus A332) | 17:47 BST | 19:20 PDT |
| Fri, 24 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 18:01 BST | 19:18 PDT | |
| Thu, 23 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 17:57 BST | 21:00 PDT | |
| Wed, 22 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 22:09 BST | 20:30 PDT | |
| Tue, 21 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 17:58 BST | 19:26 PDT | |
| Mon, 20 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 17:58 BST | 19:43 PDT | |
| Sun, 19 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 18:30 BST | 20:46 PDT | 18:42 BST | 21:06 PDT | |
| Sat, 18 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 17:52 BST | 19:10 PDT | |
| Fri, 17 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 18:47 BST | 19:45 PDT | |
| Wed, 15 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 17:54 BST | 18:51 PDT | |
| Tue, 14 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 17:58 BST | 19:17 PDT | |
| Mon, 13 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | N853NW (Airbus A332) | 17:55 BST | 19:46 PDT |
| Sun, 12 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 18:30 BST | 20:46 PDT | 18:50 BST | 19:54 PDT | |
| Sat, 11 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 18:02 BST | 18:55 PDT | |
| Fri, 10 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | |||
| Thu, 09 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 18:12 BST | 19:09 PDT | |
| Wed, 08 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 18:10 BST | 19:18 PDT | |
| Tue, 07 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 17:55 BST | 19:09 PDT | |
| Mon, 06 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 17:52 BST | 19:12 PDT | |
| Sun, 05 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 18:30 BST | 20:46 PDT | 21:14 BST | 20:23 PDT | |
| Sat, 04 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 17:53 BST | 19:05 PDT | |
| Fri, 03 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 18:10 BST | 19:44 PDT | |
| Thu, 02 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 18:13 BST | 19:40 PDT | |
| Wed, 01 Apr | DL21 | Heathrow (LHR) | Seattle Tacoma Intl (SEA) | 17:45 BST | 20:04 PDT | 18:00 BST | 19:25 PDT | |