Philadelphia (PHL) to Las Vegas (LAS): 2,171 miles (3,494 km) great-circle, about 4h 50m nonstop by our estimate. Cheapest fare observed: $122 round-trip on Frontier, with 1 stop, departing May 22, 2026.
$122 round-trip, Frontier F93339, departing 2026-05-22 at 20:35, returning 2026-06-07. The recorded itinerary left on a Friday, returning on a Sunday 16 nights later; the fare was observed 27 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $122, it ranked 3rd of the 30 round-trip fares we recorded from PHL (median $234). That is 5.6 cents per great-circle mile (round-trip price over one-way distance), below the PHL median of 21.3 cents across 30 round-trip routes.
Routes from PHL of similar length: Leon (2,022 mi) at $371 and Mexico City (1,998 mi) at $337.
Frontier had the cheapest fare on 19 of 30 PHL routes. It is the 7th longest of the 30 routes we track from PHL.
Of 32 departure airports with a fare to Las Vegas, Philadelphia (PHL) ranked 5th at $122. Lowest: $51 from San Francisco (SFO); highest: $465 from Los Cabos (SJD); 16 nonstop. Cheapest-fare airlines (routes): Frontier (24), Alaska Airlines (2), Air Canada (1), American Airlines (1), JetBlue (1) and Southwest (1), plus 2 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, America/Los_Angeles; flight time is our estimate.