Are there nonstop flights from London (STN) to Valencia (VLC)?

Yes. Ryanair fly this route. Flight time is about 2h 7m.

What is the fastest connection from London (STN) to Valencia (VLC)?

via Nantes ≈ 2h 38m, via Toulouse ≈ 2h 39m, via Paris ≈ 2h 42m (estimated flying time, excluding layovers).

from 15,000 ANA miles, from 25,000 JAL miles (economy, one way, based on the published award charts).

London Stansted Airport (STN) to Valencia Airport (VLC)・1,379 km

Nonstop flights available (1 airline). Flight time about 2h 7m. Nonstop return flights also operate.

With milesANA 15,000 miles+ (via MUC)JAL 25,000 miles+ (via IBZ)Economy, one way, estimate. Tap a connection for miles by cabin.

58 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.