Need help booking?
Unpublished phone-only deals available
TNN to OPO: distance & flight time
Tainan (Tainan Airport) → Porto (Francisco de Sá Carneiro Airport)
6,925 mi
11,145 km · 6,018 nm
14h 3m
estimated nonstop flight time
-7h
time difference · heading northwest
See live TNN→OPO fares Phone-only fares on this route — call free
Flight time details
6,925 miles nonstop takes roughly 14h 3m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- TNN — Tainan Airport · Tainan, Taiwan
- 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 TNN
- PIF · Pingtung North Airport25 mi away
- KHH · Kaohsiung International Airport27 mi away
- CYI · Chiayi Airport37 mi away
- WOT · Wang-an Airport53 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 TNN from OPO?
The flight distance from Tainan (TNN) to Porto (OPO) is 6,925 miles (11,145 km, 6,018 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TNN to OPO?
A nonstop flight takes about 14h 3m 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 Tainan and Porto?
Porto is 7 hours behind Tainan.
What is the cheapest way to fly from TNN to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TNN–OPO that never appear on search engines, with no booking fees.