Are there nonstop flights from Madison (MSN) to London (LHR)?

No. The fastest connection is via Chicago, about 8h 40m of total flying time.

What is the fastest connection from Madison (MSN) to London (LHR)?

via Chicago ≈ 8h 40m, via Detroit ≈ 8h 42m, via Boston ≈ 8h 56m (estimated flying time, excluding layovers).

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

Dane County Regional Truax Field (MSN) to London Heathrow Airport (LHR)・6,344 km

No nonstop flights. The fastest connection is via Chicago (ORD), about 8h 40m of flying time (layover not included).

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

None.

16 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.