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ACH to OPO: distance & flight time
Altenrhein (St Gallen Altenrhein Airport) → Porto (Francisco de Sá Carneiro Airport)
996 mi
1,602 km · 865 nm
2h 38m
estimated nonstop flight time
-1h
time difference · heading west
See live ACH→OPO fares Phone-only fares on this route — call free
Flight time details
996 miles nonstop takes roughly 2h 38m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
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 ACH
- HOH · Hohenems-Dornbirn Airport9 mi away
- FDH · Friedrichshafen Airport13 mi away
- ZRH · Zürich Airport47 mi away
- FMM · Memmingen Allgau Airport47 mi away
Near OPO
- BGZ · Braga Municipal Aerodrome26 mi away
- VRL · Vila Real Airport50 mi away
- VSE · Aerodromo Goncalves Lobato (Viseu Airport)55 mi away
- VGO · Vigo Airport68 mi away
Frequently asked questions
How far is ACH from OPO?
The flight distance from Altenrhein (ACH) to Porto (OPO) is 996 miles (1,602 km, 865 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACH to OPO?
A nonstop flight takes about 2h 38m 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 Altenrhein and Porto?
Porto is 1 hour behind Altenrhein.
What is the cheapest way to fly from ACH to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACH–OPO that never appear on search engines, with no booking fees.