| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 26 | SEA | LHR | 22:12 | 15:11 |
En-Route
|
Track > |
| Jul 25 | SEA | LHR | 22:11 | 14:52 |
Landed
|
Track > |
| Jul 24 | SEA | LHR | 22:15 | 15:05 |
Landed
|
Track > |
| Jul 23 | SEA | LHR | 21:59 | 14:37 |
Landed
|
Track > |
| Jul 22 | SEA | LHR | 22:00 | 15:05 |
Landed
|
Track > |
| Jul 21 | SEA | LHR | 21:57 | 15:01 |
Landed
|
Track > |
| Jul 20 | SEA | LHR | 22:24 | 15:15 |
Landed
|
Track > |
| Jul 19 | SEA | LHR | 22:12 | 15:08 |
Landed
|
Track > |
| Jul 18 | SEA | LHR | 21:58 | 15:02 |
Landed
|
Track > |
| Jul 17 | SEA | LHR | 22:11 | 14:47 |
Landed
|
Track > |
Delta Air Lines Flight DL20 connects Seattle, United States to London, United Kingdom, taking off from Seattle Tacoma International Airport SEA and landing at London Heathrow Airport LHR.
How long is the DL20 flight from Seattle to London?
The average flight time from Seattle to London is 8 hours and 52 minutes. The flight distance is 7701 km / 4785 miles and the average flight speed is 868 km/h / 540 mph.
How many DL20 flights are operated per week?
7 flights per week. The flight DL20 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of Delta Air Lines Flight DL20 Seattle to London?
The Airportia On-Time Performance Rating for Delta Air Lines Flight DL20 is 5/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight DL20 arriving at?
Flight DL20 arrives at London Heathrow Airport (LHR) Terminal 3.
When was the latest DL20 flight?
The latest flight took off on Monday, July 27th, 2026 with the flight status being En-Route on 15:11.
How else can the flight DL20 be referenced as?
This Delta Air Lines flight can also be referenced as DAL20, DAL020, DL020, DL0020, DL 20, DAL 20.
How often is flight DL20 delayed?
On average, 0% of all DL20 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled DL20 flight or baggage issues?
If your DL20 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our DL20 Flight Tracker above for more details.
Flight DL20 is code-shared by 5 airlines using the flight numbers VS4037, AF3603, KL6021, SK3986, SV4417
Other flights departing from Seattle SEA: DL3893, DL2512, AS1560, AS522
Other flights arriving at London LHR: AV120, AZ204, LH2476, BA853
All flights connecting Seattle SEA to London LHR.
