Flight

DL21 (DAL21)

Route

LHRSEA

Status

In air

Delta flight DL21 left London Heathrow Airport on 25 Sept 2026 at 18:20 and is due to arrive in Seattle / Tacoma International Airport at 20:10 local time.

Status:In air

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Other DL21 flights

Multiple flights operate under the DL21 flight number.

FromToDepartsArrivesStatus

Departure

Departs from	London Heathrow (LHR)
Date	Fri 25 Sept
Departs	17:4518:20
Terminal	3
Gate	25
Check-in desk	A

Arrival

Arrives at	Seattle / Tacoma International (SEA)
Date	Fri 25 Sept
Arrives	20:1019:42
Terminal	S
Gate	S10
Luggage belt	19

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