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GNT to OPO: distance & flight time
Grants (Grants-Milan Municipal Airport) → Porto (Francisco de Sá Carneiro Airport)
5,090 mi
8,191 km · 4,423 nm
10h 27m
estimated nonstop flight time
+7h
time difference · heading northeast
See live GNT→OPO fares Phone-only fares on this route — call free
Flight time details
5,090 miles nonstop takes roughly 10h 27m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- GNT — Grants-Milan Municipal Airport · Grants, 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 GNT
- GUP · Gallup Municipal Airport55 mi away
- ABQ · Albuquerque International Sunport74 mi away
- LAM · Los Alamos Airport104 mi away
- SAF · Santa Fe Municipal Airport107 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 GNT from OPO?
The flight distance from Grants (GNT) to Porto (OPO) is 5,090 miles (8,191 km, 4,423 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GNT to OPO?
A nonstop flight takes about 10h 27m 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 Grants and Porto?
Porto is 7 hours ahead of Grants.
What is the cheapest way to fly from GNT to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GNT–OPO that never appear on search engines, with no booking fees.