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ATO to OPO: distance & flight time
Athens (Ohio University Snyder Field) → Porto (Francisco de Sá Carneiro Airport)
3,760 mi
6,052 km · 3,268 nm
7h 50m
estimated nonstop flight time
+5h
time difference · heading northeast
See live ATO→OPO fares Phone-only fares on this route — call free
Flight time details
3,760 miles nonstop takes roughly 7h 50m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time gain when reading arrival times on your ticket.
The two airports
- ATO — Ohio University Snyder Field · Athens, United States
- 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 ATO
- PMH · Greater Portsmouth Regional Airport42 mi away
- PKB · Mid Ohio Valley Regional Airport43 mi away
- ZZV · Zanesville Municipal Airport54 mi away
- LCK · Rickenbacker International Airport56 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 ATO from OPO?
The flight distance from Athens (ATO) to Porto (OPO) is 3,760 miles (6,052 km, 3,268 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ATO to OPO?
A nonstop flight takes about 7h 50m 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 Athens and Porto?
Porto is 5 hours ahead of Athens.
What is the cheapest way to fly from ATO to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ATO–OPO that never appear on search engines, with no booking fees.