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DEN to OPO: distance & flight time
Denver (Denver International Airport) → Porto (Francisco de Sá Carneiro Airport)
4,751 mi
7,645 km · 4,128 nm
9h 47m
estimated nonstop flight time
+7h
time difference · heading northeast
See live DEN→OPO fares Phone-only fares on this route — call free
Flight time details
4,751 miles nonstop takes roughly 9h 47m 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
- DEN — Denver International Airport · Denver, 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 DEN
- BFK · Buckley Air Force Base12 mi away
- APA · Centennial Airport22 mi away
- BJC · Rocky Mountain Metropolitan Airport24 mi away
- WBU · Boulder Municipal Airport32 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 DEN from OPO?
The flight distance from Denver (DEN) to Porto (OPO) is 4,751 miles (7,645 km, 4,128 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DEN to OPO?
A nonstop flight takes about 9h 47m 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 Denver and Porto?
Porto is 7 hours ahead of Denver.
What is the cheapest way to fly from DEN to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DEN–OPO that never appear on search engines, with no booking fees.