Singapore to Sofia
11h 46m The flight from Singapore Changi Airport (SIN) to Sofia Airport (SOF) covers 9,137 km (5,677 miles) and takes approximately 11h 46m gate to gate for a typical jet.
The route heads north-west on an initial great-circle bearing of 313°, passing near 27.7° N, 71.1° E at its midpoint.
The route
The great-circle path — the shortest line between the two airports across the curve of the earth. On a flat map it looks bent; on a globe it is straight.
Flight time at different cruise speeds
Aircraft type, winds and routing all move the real number. This is the same distance flown at different speeds, plus the 25-minute ground and climb allowance.
| Typical of | Cruise speed | Airborne | Gate to gate |
|---|---|---|---|
| Turboprop / regional | 550 km/h | 16h 37m | 17h 02m |
| Narrowbody jet (A320, 737) | 780 km/h | 11h 43m | 12h 08m |
| Widebody jet (777, 787, A350) | 900 km/h | 10h 09m | 10h 34m |
| Private jet (Gulfstream) | 850 km/h | 10h 45m | 11h 10m |
Headwinds on an eastbound long-haul routinely add 30–60 minutes; the same route westbound can be quicker. Airlines publish schedules with padding built in.
Both airports
| SIN | SOF | |
|---|---|---|
| Airport | Singapore Changi Airport | Sofia Airport |
| City | Singapore | Sofia |
| Country | Singapore | Bulgaria |
| ICAO | WSSS | LBSF |
| Coordinates | 1.3502, 103.994 | 42.6964, 23.4177 |
| Elevation | 22 ft | 1,742 ft |
Questions
How long is the flight from Singapore to Sofia?
A non-stop flight from Singapore (SIN) to Sofia (SOF) takes about 11h 46m. The great-circle distance is 9,137 km (5,677 miles, 4,933 nautical miles), flying north-west on an initial bearing of 313°.
How far is Singapore from Sofia?
9,137 kilometres in a straight line over the earth's surface — 5,677 miles or 4,933 nautical miles. Actual flown distance is usually 2–5% longer because aircraft follow airways, avoid weather and route around restricted airspace.
Is there a non-stop flight between SIN and SOF?
This page calculates the direct-line time and distance; it does not track airline schedules. At 9,137 km the route is comfortably within range of a non-stop service if an airline chooses to fly it. Check an airline or booking site for what is actually scheduled.
What should I expect on a 11h 46m flight?
Anything past six hours is a long-haul flight: expect at least one meal service, a significant time-zone shift, and enough sitting that circulation and hydration start to matter. Cabin altitude, dry air and disrupted sleep do more damage to a training routine than the flight itself.
Airport coordinates from OurAirports (public domain). Distance is a great-circle calculation; flight time uses the model described on the method page. Flight times are great-circle estimates for planning only — always check the airline's published schedule.