Los Angeles (LAX) to Phnom Penh (KTI): 8,208 miles (13,209 km) great-circle, about 16h 55m nonstop by our estimate. Cheapest fare observed: $1254 round-trip on Cathay Pacific, with 1 stop, departing June 15, 2026.
$1254 round-trip, Cathay Pacific CX885, departing 2026-06-15 at 13:20, returning 2026-07-07. The recorded itinerary left on a Monday, returning on a Tuesday 22 nights later; the fare was observed 51 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $1254, it ranked 25th of the 30 round-trip fares we recorded from LAX (median $302). That is 15.3 cents per great-circle mile (round-trip price over one-way distance), close to the LAX median of 15.3 cents across 30 round-trip routes.
Routes from LAX of similar length: Ho Chi Minh City (8,159 mi) at $1326 and Bangkok (8,259 mi) at $1281.
Cathay Pacific had the cheapest fare on 2 of 30 LAX routes. It is the 2nd longest of the 30 routes we track from LAX.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Los_Angeles, Asia/Phnom_Penh; flight time is our estimate.