Southwest and Spirit
Southwest does
Alaska airlines and i think southwest
Thomas Cook
Northwest, Sun Country and Southwest all fly to Las Vegas (LAS) from Minneapolis Minnesota (MSP)
www.allegiantair.com one way cheapest way gogogooggo
Virgin fly from gatwick direct to Las vegas.
American Airlines
EWR is the airport code for Newark, New Jersey. FLL is the airport code for Fort Lauderdale, Florida. You can make this trip on several airlines, including US Airways, Delta, JetBlue, United, Silver Airways, American Airlines, and Air Tran.
American Airlines and Hawaiian Airlines fly direct between Phoenix and Honolulu.
Whilst no airlines fly direct from Las Vegas to Flagstaff, you might look into connecting flights via US Airlines. Delta and United/Continental can get you there as well, however, they would require at least 2 connections.
US Airways & United Airlines
At the moment, no airlines fly direct between Amritsar and London.