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BIL to OPO: distance & flight time
Billings (Billings Logan International Airport) → Porto (Francisco de Sá Carneiro Airport)
4,663 mi
7,504 km · 4,052 nm
9h 37m
estimated nonstop flight time
+7h
time difference · heading northeast
See live BIL→OPO fares Phone-only fares on this route — call free
Flight time details
4,663 miles nonstop takes roughly 9h 37m 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
- BIL — Billings Logan International Airport · Billings, 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 BIL
- COD · Yellowstone Regional Airport92 mi away
- LVM · Mission Field92 mi away
- LWT · Lewistown Municipal Airport96 mi away
- SHR · Sheridan County Airport105 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 BIL from OPO?
The flight distance from Billings (BIL) to Porto (OPO) is 4,663 miles (7,504 km, 4,052 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BIL to OPO?
A nonstop flight takes about 9h 37m 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 Billings and Porto?
Porto is 7 hours ahead of Billings.
What is the cheapest way to fly from BIL to OPO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BIL–OPO that never appear on search engines, with no booking fees.