Are there nonstop flights from Denver (DEN) to Long Beach (LGB)?

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

What is the fastest connection from Denver (DEN) to Long Beach (LGB)?

via Las Vegas ≈ 2h 37m, via Phoenix ≈ 2h 48m, via Salt Lake City ≈ 2h 51m (estimated flying time, excluding layovers).

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

Denver International Airport (DEN) to Long Beach International Airport (LGB)・1,373 km

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

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

12 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.