Las Vegas (LAS) to Portland (PDX): 763 miles (1,227 km) great-circle, about 2h 00m nonstop by our estimate. Cheapest fare observed: $148 round-trip on Frontier, nonstop, departing May 1, 2026.
$148 round-trip, Frontier F91105, departing 2026-05-01 at 06:30, returning 2026-05-03. The recorded itinerary left on a Friday, returning on a Sunday 2 nights later; the fare was observed 6 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $148, it ranked 5th of the 30 round-trip fares we recorded from LAS (median $271). That is 19.4 cents per great-circle mile (round-trip price over one-way distance), close to the LAS median of 20.1 cents across 30 round-trip routes.
Routes from LAS of similar length: Bozeman (701 mi) at $221 and Seattle (867 mi) at $188.
Frontier had the cheapest fare on 11 of 30 LAS routes. It is the 23rd longest of the 30 routes we track from LAS.
Of 8 departure airports with a fare to Portland, Las Vegas (LAS) ranked 2nd at $148. Lowest: $97 from Denver (DEN); highest: $462 from San Jose (SJC); 4 nonstop. Cheapest-fare airlines (routes): Alaska Airlines (2), American Airlines (2), Frontier (2) and Southwest (2).
The reverse, Portland (PDX) to Las Vegas (LAS), was $256 round-trip on Alaska Airlines, nonstop, departing May 9, 2026. Portland to Las Vegas flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Los_Angeles, America/Los_Angeles; flight time is our estimate.