Are there nonstop flights from Reykjavík (KEF) to London (LCY)?

No. The fastest connection is via Glasgow, about 3h 15m of total flying time.

What is the fastest connection from Reykjavík (KEF) to London (LCY)?

via Glasgow ≈ 3h 15m, via Edinburgh ≈ 3h 16m, via Dublin ≈ 3h 20m (estimated flying time, excluding layovers).

Keflavik International Airport (KEF) to London City Airport (LCY)・1,912 km

No nonstop flights. The fastest connection is via Glasgow (GLA), about 3h 15m of flying time (layover not included).

None.

12 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.