Are there nonstop flights from Houston (IAH) to Split (SPU)?

No. The fastest connection is via Paris, about 11h 56m of total flying time.

What is the fastest connection from Houston (IAH) to Split (SPU)?

via Paris ≈ 11h 56m, via London ≈ 11h 56m, via Newark ≈ 11h 58m (estimated flying time, excluding layovers).

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

George Bush Intercontinental Airport (IAH) to Split Saint Jerome Airport (SPU)・9,288 km

No nonstop flights. The fastest connection is via Paris (CDG), about 11h 56m of flying time (layover not included).

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

None.

8 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.