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OPO to ORD: distance & flight time
Porto (Francisco de Sá Carneiro Airport) → Chicago (Chicago O'Hare International Airport)
3,934 mi
6,332 km · 3,419 nm
8h 11m
estimated nonstop flight time
-6h
time difference · heading northwest
See live OPO→ORD fares Phone-only fares on this route — call free
Flight time details
3,934 miles nonstop takes roughly 8h 11m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- OPO — Francisco de Sá Carneiro Airport · Porto, Portugal
- ORD — Chicago O'Hare International Airport · Chicago, 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 ORD
- PWK · Chicago Executive Airport9 mi away
- MDW · Chicago Midway International Airport15 mi away
- CGX · Chicago Meigs Airport17 mi away
- DPA · Dupage Airport18 mi away
Frequently asked questions
How far is OPO from ORD?
The flight distance from Porto (OPO) to Chicago (ORD) is 3,934 miles (6,332 km, 3,419 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OPO to ORD?
A nonstop flight takes about 8h 11m 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 Chicago?
Chicago is 6 hours behind Porto.
What is the cheapest way to fly from OPO to ORD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OPO–ORD that never appear on search engines, with no booking fees.