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THR to ACH: distance & flight time
Teheran (Mehrabad International Airport) → Altenrhein (St Gallen Altenrhein Airport)
2,274 mi
3,660 km · 1,976 nm
4h 56m
estimated nonstop flight time
-1.5h
time difference · heading northwest
See live THR→ACH fares Phone-only fares on this route — call free
Flight time details
2,274 miles nonstop takes roughly 4h 56m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1.5-hour time set-back when reading arrival times on your ticket.
The two airports
- THR — Mehrabad International Airport · Teheran, Iran
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
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 ACH
- HOH · Hohenems-Dornbirn Airport9 mi away
- FDH · Friedrichshafen Airport13 mi away
- ZRH · Zürich Airport47 mi away
- FMM · Memmingen Allgau Airport47 mi away
Frequently asked questions
How far is THR from ACH?
The flight distance from Teheran (THR) to Altenrhein (ACH) is 2,274 miles (3,660 km, 1,976 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THR to ACH?
A nonstop flight takes about 4h 56m 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 Altenrhein?
Altenrhein is 1.5 hours behind Teheran.
What is the cheapest way to fly from THR to ACH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THR–ACH that never appear on search engines, with no booking fees.