Delta DL21 Flight Status : Live Tracking & Updates

International flight Delta DL21 takes off from London (LHR) United Kingdom to Seattle (SEA) United States. It's operated by Delta Airlines. The plane leaves London Heathrow Airport at 17:45 25 May 2026 Europe/London. The flight is expected to land at Seattle International Airport at 20:11 25 May 2026 America/Los_Angeles. The flight will last about 10 hours 2 minutes.

Current status of DL21 is In Air Estimated Arrival in 8 hours, 8 minutes

DL21 - DAL21 Delta Airlines (DL)
LHR London United Kingdom
Flight LHR to SEA
SEA Seattle United States
In Air Estimated Arrival in 8 hours, 8 minutes
Departure London Heathrow Airport
IATA: LHRICAO: EGLL
Scheduled 17:45 25 May 2026
Actual 18:06 25 May 2026
3 17
Arrival Seattle International Airport
IATA: SEAICAO: KSEA
Scheduled 20:11 25 May 2026
Estimated 19:44 25 May 2026
S S12
DL21 Detail
  • Type: International Flight
  • Flight Duration: 10 hours 2 minutes
  • Flight Distance: 7726 kms / 4801 miles
Airline
  • Delta Airlines
  • IATA: DL
  • ICAO: DAL
  • Operating Days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
Passenger Services
  • Service type: Normal passenger
  • Seats: 208
  • Freight capacity: 12.7 tons
  • Passenger classes: Economy, Business Class, Premium Economy
More Detail
  • Aircraft: Airbus A330-900neo
  • Callsign: F-CYZF4
  • Departure Timezone: Europe/London
  • Arrival Timezone: America/Los_Angeles
  • Current Time in London: Monday 2026-05-25 19:36 PM
  • Current Time in Seattle: Monday 2026-05-25 11:36 AM

Delta DL21 Flight Statistics

Delta
Delta
FLIGHT NO DL21
AIRPLANE Airbus A330-900neo
ON TIME 14
DELAYED 0
CANCELLED 0
ON TIME 28
DELAYED 2
CANCELLED 0
ON TIME 56
DELAYED 3
CANCELLED 1
ON TIME 77
DELAYED 5
CANCELLED 2
Last 14 days flight data
14 30 60 90
On Time Rate

Delta DL21 Flight Schedule and Histories

Time Departure Arrival Actual departure Actual arrival
Sat 23 May
Scheduled On time
London (LHR) 2026-05-23T17:45
Seattle (SEA) 2026-05-23T20:11
Thu 21 May
Scheduled On time
London (LHR) 2026-05-21T17:45
Seattle (SEA) 2026-05-21T20:11
Sat 16 May
Scheduled On time
London (LHR) 2026-05-16T17:45
Seattle (SEA) 2026-05-16T20:11
Thu 14 May
Scheduled On time
London (LHR) 2026-05-14T17:45
Seattle (SEA) 2026-05-14T20:11
Sun 10 May
Scheduled On time
London (LHR) 2026-05-10T18:30
Seattle (SEA) 2026-05-10T20:53
Sat 09 May
Departed On time
London (LHR) 2026-05-09T17:45
Seattle (SEA) 2026-05-09T20:11
2026-05-09T17:32
Fri 08 May
Departed On time
London (LHR) 2026-05-08T17:45
Seattle (SEA) 2026-05-08T20:11
2026-05-08T17:35
Thu 07 May
Departed On time
London (LHR) 2026-05-07T17:45
Seattle (SEA) 2026-05-07T20:11
2026-05-07T17:33
Tue 05 May
Scheduled On time
London (LHR) 2026-05-05T17:45
Seattle (SEA) 2026-05-05T20:11
Sun 03 May
Departed Delayed by 1h 34m
London (LHR) 2026-05-03T18:30
Seattle (SEA) 2026-05-03T20:53
2026-05-03T20:29

Flight routes similar to Delta DL21

Airline Flight no Departure Arrival
American Airlines AA6910
American Airlines 		25/05/2026
09:50 		9 hours 4 minutes
11:35
KLM KL6022
KLM 		25/05/2026
17:45 		10 hours 26 minutes
20:11
Air France AF9904
Air France 		25/05/2026
11:40 		10 hours 20 minutes
14:00
Virgin Atlantic VS105
Virgin Atlantic 		25/05/2026
11:40 		10 hours 20 minutes
14:00
Air France AF3586
Air France 		25/05/2026
17:45 		10 hours 26 minutes
20:11
Aer Lingus EI8753
Aer Lingus 		25/05/2026
09:50 		9 hours 45 minutes
11:35
Alaska Airlines AS5269
Alaska Airlines 		25/05/2026
09:50 		9 hours 45 minutes
11:35
Delta DL5975
Delta 		25/05/2026
11:40 		10 hours 20 minutes
14:00

Delta Flight DL21 FAQs

What is the scheduled flight duration for Delta DL21 flight?

On average, nonstop flight takes 10 hour(s) 2 minutes, with the flight distance of 7726 km (4801 miles).

What is the current status of Delta DL21 flight?

The current status of flight Delta DL21 is In Air.

What type of aircraft is used for the Delta DL21 flight?

All Delta DL21 flights are operated using Airbus A330-900neo aircraft.

When does the flight Delta DL21 arrive?

Flight Delta DL21 arrives at 20:11.

Which terminal the flight Delta DL21 is arriving at?

Flight Delta DL21 arrives in Seattle International Airport at Terminal S.

How many Delta DL21 flights are operated a week?

7 flights per week. The Flight Delta DL21 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday .