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CPR to OPO: distance & flight time
Casper (Casper-Natrona County International Airport) → Porto (Francisco de Sá Carneiro Airport)
4,700 mi
7,563 km · 4,084 nm
9h 41m
estimated nonstop flight time
+7h
time difference · heading northeast
See live CPR→OPO fares Phone-only fares on this route — call free
Flight time details
4,700 miles nonstop takes roughly 9h 41m 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
- CPR — Casper-Natrona County International Airport · Casper, 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 CPR
- RWL · Rawlins Municipal Airport/Harvey Field85 mi away
- RIW · Riverton Regional Airport101 mi away
- SAA · Shively Field103 mi away
- WRL · Worland Municipal Airport104 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 CPR from OPO?
The flight distance from Casper (CPR) to Porto (OPO) is 4,700 miles (7,563 km, 4,084 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CPR to OPO?
A nonstop flight takes about 9h 41m 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 Casper and Porto?
Porto is 7 hours ahead of Casper.
What is the cheapest way to fly from CPR to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CPR–OPO that never appear on search engines, with no booking fees.