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THR to SIN: distance & flight time
Teheran (Mehrabad International Airport) → Singapore (Singapore Changi Airport)
4,118 mi
6,627 km · 3,579 nm
8h 32m
estimated nonstop flight time
+4.5h
time difference · heading southeast
See live THR→SIN fares Phone-only fares on this route — call free
Flight time details
4,118 miles nonstop takes roughly 8h 32m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4.5-hour time gain when reading arrival times on your ticket.
The two airports
- THR — Mehrabad International Airport · Teheran, Iran
- SIN — Singapore Changi Airport · Singapore, Singapore
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near THR
- IKA · Imam Khomeini International Airport21 mi away
- PYK · Payam International Airport28 mi away
- NSH · Noshahr Airport68 mi away
- GZW · Qazvin Airport80 mi away
Near SIN
- QPG · Paya Lebar Air Base6 mi away
- XSP · Seletar Airport10 mi away
- BTH · Hang Nadim International Airport18 mi away
- TGA · Tengah Air Base20 mi away
Frequently asked questions
How far is THR from SIN?
The flight distance from Teheran (THR) to Singapore (SIN) is 4,118 miles (6,627 km, 3,579 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THR to SIN?
A nonstop flight takes about 8h 32m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Teheran and Singapore?
Singapore is 4.5 hours ahead of Teheran.
What is the cheapest way to fly from THR to SIN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THR–SIN that never appear on search engines, with no booking fees.