Hong Kong (HKG) to Tokyo (TYO): 1,804 miles (2,903 km) great-circle, about 4h 05m nonstop by our estimate. Cheapest fare observed: $232 round-trip on Air China, with 1 stop, departing May 14, 2026.
$232 round-trip, Air China CA728, departing 2026-05-14 at 18:35, returning 2026-05-16. The recorded itinerary left on a Thursday, returning on a Saturday 2 nights later; the fare was observed 19 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $232, it ranked 6th of the 30 round-trip fares we recorded from HKG (median $303). That is 12.9 cents per great-circle mile (round-trip price over one-way distance), below the HKG median of 22.1 cents across 30 round-trip routes.
Routes from HKG of similar length: Ulaanbaatar (1,794 mi) at $488 and Vladivostok (1,792 mi) at $584.
Air China had the cheapest fare on 6 of 30 HKG routes. It is the 11th longest of the 30 routes we track from HKG.
Of 34 departure airports with a fare to Tokyo, Hong Kong (HKG) ranked 7th at $232. Lowest: $80 from Sapporo (CTS); highest: $1812 from Washington DC (DCA); 11 nonstop. Cheapest-fare airlines (routes): Scoot (4), Frontier (3), WestJet (3), Alaska Airlines (2), Jetstar (2) and Jetstar Japan (2), plus 17 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Hong_Kong, Asia/Tokyo; flight time is our estimate.