Are there nonstop flights from London (LGW) to Tromsø (TOS)?

Yes. easyJet, Norwegian Air Shuttle fly this route. Flight time is about 3h 12m.

What is the fastest connection from London (LGW) to Tromsø (TOS)?

via Bergen ≈ 3h 42m, via Trondheim ≈ 3h 42m, via Oslo ≈ 3h 46m (estimated flying time, excluding layovers).

from 15,000 JAL miles (economy, one way, based on the published award charts).

London Gatwick Airport (LGW) to Tromsø Airport (TOS)・2,289 km

Nonstop flights available (2 airlines). Flight time about 3h 12m. Nonstop return flights also operate.

With milesJAL 15,000 miles+ (via CDG)Economy, one way, estimate. Tap a connection for miles by cabin.

23 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.