Are there nonstop flights from Washington (IAD) to Basseterre (SKB)?

No. The fastest connection is via Sint Maarten, about 4h 17m of total flying time.

What is the fastest connection from Washington (IAD) to Basseterre (SKB)?

via Sint Maarten ≈ 4h 17m, via Charlotte Amalie ≈ 4h 22m, via San Juan ≈ 4h 25m (estimated flying time, excluding layovers).

from 15,000 JAL miles, from 30,000 ANA miles (economy, one way, based on the published award charts).

Washington Dulles International Airport (IAD) to Robert L. Bradshaw International Airport (SKB)・2,798 km

No nonstop flights. The fastest connection is via Sint Maarten (SXM), about 4h 17m of flying time (layover not included).

With milesJAL 15,000 miles+ (via CLT)ANA 30,000 miles+ (via EWR)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

10 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.