Compare: Singapore→Tokyo (5,311 km) vs Singapore→Hong Kong (2,586 km). Singapore → Hong Kong wins by 2,725 km (51%). Side-by-side with flight & drive times.
By SnapDistance Team · Updated April 21, 2026
5,311 km
3,300 miles · Flight: ~7h 8min · Drive: ~86h 18min
2,586 km
1,607 miles · Flight: ~3h 44min · Drive: ~42h 1min
✓ Shorter route
Difference: 2,725 km (51%) · Flight time difference: ~3h 24min
Verdict
Singapore → Hong Kong is the smarter pick if travel time and emissions matter most: it is 2,725 km (51%) shorter, saves about 3h 24min of flight time, and cuts roughly 695 kg of CO₂ per passenger. Choose Singapore → Tokyo only if the destination itself is the reason for the trip.
Singapore → Hong Kong is the shorter route at 2,586 km, which is 2,725 km (51%) shorter than Singapore → Tokyo. You would save approximately 3h 24min in flight time by choosing the shorter route.
| Metric | Singapore → Tokyo | Singapore → Hong Kong |
|---|---|---|
| Distance (km) | 5,311 | 2,586 |
| Distance (miles) | 3,300 | 1,607 |
| Flight time | ~7h 8min | ~3h 44min |
| Driving time | ~86h 18min | ~42h 1min |
| Road distance (est.) | ~6,904 km | ~3,362 km |
| Drivable? | No | Yes |
| Cross-continental | No | No |
| Initial bearing | 40° (NE) | 25° (NNE) |
| Time-zone shift | +2h | +1h |
| CO₂ – flight (per pax) | ~1,354 kg | ~659 kg |
| CO₂ – driving (per car) | — | ~575 kg |
| Fuel cost (est.) | — | ~$336 USD |
Flying from Singapore to Tokyo produces roughly 1,354 kg of CO₂ per passenger, based on the ICAO/EEA short-haul emission factor of ~0.255 kg per passenger-km. The Singapore → Hong Kong flight emits about 659 kg. Choosing the shorter route saves approximately 695 kg of CO₂ per traveler — equivalent to 33 typical tree-years of carbon sequestration.
The Singapore to Tokyo route covers 5,311 km (3,300 miles), staying within Asia. Singapore (population: 5,850,342) is located in Singapore, Singapore, while Tokyo (population: 13,960,000) is in Kanto, Japan.
The Singapore to Hong Kong route covers 2,586 km (1,607 miles), remaining within Asia. Singapore (population: 5,850,342) is in Singapore, Singapore, and Hong Kong (population: 7,488,865) is in Hong Kong SAR, Hong Kong.
Flying from Singapore to Tokyo takes approximately 7h 8min, while Singapore to Hong Kong takes 3h 44min. If driving is an option, expect roughly 86h 18min for the first route and 42h 1min for the second.
Since both routes depart from Singapore, this comparison is especially useful for travelers deciding between Tokyo and Hong Kong as a destination.
The 2,725 km difference between these routes is substantial and will significantly impact travel time and cost.
Only the Singapore→Hong Kong route is practical by car (3,362 km by road). The other route requires flying.
Tokyo (Japan) has a population of 13,960,000 and is located in the Kanto region of Asia. As a major metropolis, it offers extensive international connections and diverse attractions.
Hong Kong (Hong Kong) has a population of 7,488,865 and is situated in Hong Kong SAR, Asia. This major global city has multiple airports and world-class infrastructure.
Choose this route if your priority is reaching Tokyo (Japan) — a city of 13,960,000 in the Kanto region of Asia. Despite being the longer of the two at 5,311 km, it makes sense when Tokyo itself is the destination, the schedule fits better, or ticket prices are noticeably lower. This is a fly-only route in practice — overland travel is not realistic at 5,311 km. The initial bearing is 40° (NE), so a great-circle flight leaves Singapore heading roughly NE.
This route is the right call if you are heading to Hong Kong (Hong Kong) — a city of 7,488,865 in the Hong Kong SAR region of Asia. It is also the shorter of the two at 2,586 km, saving about 3h 24min of flying and around 695 kg of CO₂ per passenger. Driving is feasible — expect roughly 3,362 km of road and a fuel cost in the $336 USD range. Departing Singapore, the great-circle bearing toward Hong Kong is 25° (NNE).
Singapore (1.35°, 103.82°) and Tokyo (35.68°, 139.65°) sit with a time-zone shift of +2 hours. Singapore (1.35°, 103.82°) and Hong Kong (22.32°, 114.17°) have a +1-hour offset. Both routes have manageable time-zone shifts, so jet lag should not be a major factor.
Hong Kong is closer at 2,586 km, which is 2,725 km (51%) shorter.
5,311 km (3,300 miles). Flight: ~7h 8min.
2,586 km (1,607 miles). Flight: ~3h 44min.
Flying to Hong Kong is faster at ~3h 44min, saving about 3h 24min compared to Tokyo.
All distances on SnapDistance are calculated using the Haversine formula, which determines the great-circle distance between two points on Earth's surface. This gives the shortest possible distance over the globe, which is the measurement used for aviation and navigation. Actual travel distances by road or rail are typically 20-40% longer due to terrain, borders, and infrastructure routing. Flight times assume 800 km/h cruising speed with 30 minutes for takeoff and landing. Driving estimates use 80 km/h average speed with a 30% road distance factor.
📍 Data: Coordinates from OpenStreetMap contributors. Distances calculated using the Haversine formula. Travel times are estimates only. Last verified: April 21, 2026.