| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 13 | SEA | LHR | 18:35 | 11:20 |
En-Route
|
Track > |
| Jul 11 | SEA | LHR | 19:29 | 12:19 |
Landed
|
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| Jul 10 | SEA | LHR | 18:33 | 11:14 |
Landed
|
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| Jul 09 | SEA | LHR | 20:37 | 13:20 |
Landed
|
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| Jul 08 | SEA | LHR | 18:46 | 12:09 |
Landed
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| Jul 07 | SEA | LHR | 18:33 | 12:10 |
Landed
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| Jul 06 | SEA | LHR | 18:33 | 11:26 |
Landed
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| Jul 05 | SEA | LHR | 18:38 | 12:24 |
Landed
|
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| Jul 04 | SEA | LHR | 18:55 | 11:41 |
Landed
|
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| Jul 03 | SEA | LHR | 18:45 | 11:47 |
Landed
|
Track > |
KLM Flight KL4829 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 KL4829 flight from Seattle to London?
The average flight time from Seattle to London is 9 hours and 2 minutes. The flight distance is 7701 km / 4785 miles and the average flight speed is 853 km/h / 530 mph.
How many KL4829 flights are operated per week?
6 flights per week. The flight KL4829 is operated on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of KLM Flight KL4829 Seattle to London?
The Airportia On-Time Performance Rating for KLM Flight KL4829 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight KL4829 arriving at?
Flight KL4829 arrives at London Heathrow Airport (LHR) Terminal 3.
When was the latest KL4829 flight?
The latest flight took off on Tuesday, July 14th, 2026 with the flight status being En-Route on 11:20.
How else can the flight KL4829 be referenced as?
This KLM flight can also be referenced as KLM4829, KL 4829, KLM 4829.
How often is flight KL4829 delayed?
On average, 40% of all KL4829 flights are delayed. The average delay is 8 minutes.
Can I get compensation for my delayed or cancelled KL4829 flight or baggage issues?
If your KL4829 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 KL4829 Flight Tracker above for more details.
Other flights departing from Seattle SEA: AA4035, VS106, AS372, 8C3399
Other flights arriving at London LHR: VS106, WS2, BA341, BA417
All flights connecting Seattle SEA to London LHR.