/ Flights / KLM / KL8521

KL8521 Flight Status KLM: Longyearbyen to Tromso (KLM8521)

KL 8521 Longyearbyen to Tromso Flight Status

KLM Flight KL8521 from Longyearbyen Svalbard Airport LYR to Tromso Airport TOS is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on May 29th, 2026.
Check the table below for KL8521's most recent flight history:

KL 8521 Flight Status & Schedule

Date Departure Arrival Status
May 29 12:32 13:58
Landed
 Track >
May 22 12:54 14:18
Landed
 Track >
May 15 12:30 14:00
Landed
 Track >
Apr 24 12:44 14:07
Landed
 Track >
< All LYR Departures All TOS Arrivals >

KLM KL 8521 Longyearbyen to Tromso Flight Information

KLM Flight KL8521 connects Longyearbyen, Norway to Tromso, Norway, taking off from Longyearbyen Svalbard Airport LYR and landing at Tromso Airport TOS.

How long is the KL8521 flight from Longyearbyen to Tromso?

The average flight time from Longyearbyen to Tromso is 1 hour and 25 minutes. The flight distance is 958 km / 595 miles and the average flight speed is 671 km/h / 417 mph.

How many KL8521 flights are operated per week?

1 flight per week. The flight KL8521 is operated on Friday.

What is the On-Time Performance (OTP) of KLM Flight KL8521 Longyearbyen to Tromso?

The Airportia On-Time Performance Rating for KLM Flight KL8521 is 5/5 stars. This metric is calculated using data from the past 10 flights.

When was the latest KL8521 flight?

The latest flight took off on Friday, May 29th, 2026 with the flight status being Landed on 13:58.

How else can the flight KL8521 be referenced as?

This KLM flight can also be referenced as KLM8521, KL 8521, KLM 8521.

How often is flight KL8521 delayed?

On average, 25% of all KL8521 flights are delayed. The average delay is 8 minutes.

Can I get compensation for my delayed or cancelled KL8521 flight or baggage issues?

If your KL8521 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 KL8521 Flight Tracker above for more details.

KL8521 and Longyearbyen LYR to Tromso TOS Flights

Other flights departing from Longyearbyen LYR: SK4493, SK4425, DY391, SK7091

Other flights arriving at Tromso TOS: SK4454, WF983, DY374, SK4425

All flights connecting Longyearbyen LYR to Tromso TOS.

KL8521 KLM Flight: Longyearbyen to Tromso Route Map

Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
New Flights: DY5531 JP446 5Y8076 SU6088 DK4556 XC6886 VB9396 S4432 MW1629 WF4589
See Also: Flight Tracker Airports Airlines News Flights Monitor Delay Compensation
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.