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OPO to APA: distance & flight time
Porto (Francisco de Sá Carneiro Airport) → Denver (Centennial Airport)
4,770 mi
7,677 km · 4,145 nm
9h 49m
estimated nonstop flight time
-7h
time difference · heading northwest
See live OPO→APA fares Phone-only fares on this route — call free
Flight time details
4,770 miles nonstop takes roughly 9h 49m 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
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
- APA — Centennial Airport · Denver, United States
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 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
Near APA
- DEN · Denver International Airport22 mi away
- BFK · Buckley Air Force Base10 mi away
- BJC · Rocky Mountain Metropolitan Airport27 mi away
- WBU · Boulder Municipal Airport38 mi away
Frequently asked questions
How far is OPO from APA?
The flight distance from Porto (OPO) to Denver (APA) is 4,770 miles (7,677 km, 4,145 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OPO to APA?
A nonstop flight takes about 9h 49m 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 Porto and Denver?
Denver is 7 hours behind Porto.
What is the cheapest way to fly from OPO to APA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OPO–APA that never appear on search engines, with no booking fees.