Are there nonstop flights from London (LHR) to Cancún (CUN)?

Yes. Virgin Atlantic fly this route. Flight time is about 9h 51m.

What is the fastest connection from London (LHR) to Cancún (CUN)?

via Orlando ≈ 10h 22m, via Miami ≈ 10h 22m, via Tampa ≈ 10h 23m (estimated flying time, excluding layovers).

from 27,500 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

London Heathrow Airport (LHR) to Cancún International Airport (CUN)・7,951 km

Nonstop flights available (1 airline). Flight time about 9h 51m. Nonstop return flights also operate.

With milesANA 27,500 miles+ (via EWR)JAL 37,000 miles+ (via MIA)Economy, one way, estimate. Tap a connection for miles by cabin.

57 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.