Singapore (SIN) to Hong Kong (HKG): 1,594 miles (2,566 km) great-circle, about 3h 40m nonstop by our estimate. Cheapest fare observed: $352 round-trip on Cathay Pacific, nonstop, departing May 7, 2026.
$352 round-trip, Cathay Pacific CX636, departing 2026-05-07 at 20:05, returning 2026-05-11. The recorded itinerary left on a Thursday, returning on a Monday 4 nights later; the fare was observed 12 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $352, it ranked 14th of the 30 round-trip fares we recorded from SIN (median $361). That is 22.1 cents per great-circle mile (round-trip price over one-way distance), above the SIN median of 19.9 cents across 30 round-trip routes.
Routes from SIN of similar length: Macau (1,575 mi) at $387 and Guangzhou (1,646 mi) at $308.
Cathay Pacific had the cheapest fare on 2 of 30 SIN routes. It is the 17th longest of the 30 routes we track from SIN.
Of 24 departure airports with a fare to Hong Kong, Singapore (SIN) ranked 17th at $352. Lowest: $171 from Shanghai (PVG); highest: $1773 from Orlando (MCO); 13 nonstop. Cheapest-fare airlines (routes): HK Express (7), Cathay Pacific (2), Shandong Airlines (2), United Airlines (2), Alaska Airlines (1) and Emirates (1), plus 9 more.
The reverse, Hong Kong (HKG) to Singapore (SIN), was $479 round-trip on EVA Air, 1 stop, departing May 1, 2026. Hong Kong to Singapore flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Singapore, Asia/Hong_Kong; flight time is our estimate.