Istanbul to Hanoi (Soc Son)
9h 38mgate to gate
The flight from İstanbul Airport (IST) to Noi Bai International Airport (HAN) covers 7,417 km (4,609 miles) and takes approximately 9h 38m gate to gate for a typical jet.
The route heads east on an initial great-circle bearing of 82°, passing near 37.7° N, 72.2° E at its midpoint.
Bearing 82° east Midpoint 37.7° N, 72.2° E Model 805 km/h + 25 min
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
How this is worked out
- Take both airports' published coordinates from OurAirports — nothing here is scraped from another flight site.
- Great-circle distance by haversine on a mean earth radius of 6,371.0088 km: 7,417 km.
- Airborne time = that distance ÷ 805 km/h, a representative jet cruise speed: 9h 13m.
- Add a flat 25 minutes for pushback, taxi, climb, descent and taxi-in — the reason a 400 km hop is never half an hour: 9h 38m gate to gate.
- Winds, aircraft type and airline schedule padding are not modelled. The cruise-speed table shows how much that assumption is worth.
7,417 km / 805 km/h = 9h 13m airborne
+ 25 min ground = 9h 38m gate to gate
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
The same route, plotted on a world grid
The strip above gives the route its length and its shape. This gives it a position: latitude and longitude only, no coastlines, because a hand-drawn coastline would be decoration pretending to be data. On a flat grid the shortest path 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 | 13h 29m | 13h 54m |
| Narrowbody jet (A320, 737) | 780 km/h | 9h 31m | 9h 56m |
| Widebody jet (777, 787, A350) | 900 km/h | 8h 14m | 8h 40m |
| Private jet (Gulfstream) | 850 km/h | 8h 44m | 9h 09m |
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.
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
Both airports
| IST | HAN | |
|---|---|---|
| Airport | İstanbul Airport | Noi Bai International Airport |
| City | Istanbul | Hanoi (Soc Son) |
| Country | Turkey | Vietnam |
| ICAO | LTFM | VVNB |
| Coordinates | 41.2749, 28.7321 | 21.2212, 105.807 |
| Elevation | 325 ft | 39 ft |
Every figure on this plate is geometry. The shape of the earth is knowable; the airline's schedule is not.
Questions this plate answers
How long is the flight from Istanbul to Hanoi (Soc Son)?
A non-stop flight from Istanbul (IST) to Hanoi (Soc Son) (HAN) takes about 9h 38m. The great-circle distance is 7,417 km (4,609 miles, 4,005 nautical miles), flying east on an initial bearing of 82°.
How far is Istanbul from Hanoi (Soc Son)?
7,417 kilometres in a straight line over the earth's surface — 4,609 miles or 4,005 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 IST and HAN?
This page calculates the direct-line time and distance; it does not track airline schedules. At 7,417 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 9h 38m 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.
