Chicago O'Hare to Porto (ORD → OPO). We are tracking 5 fares on this route.
Cheapest tracked fare $329 · typical price $549 · you save about $220 (40%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
Icelandair
2026-09-28
2 stops
$329
—
2027-03-04
2 stops
$354
Icelandair
2026-10-02
2 stops
$357
—
2026-12-28
1 stop
$358
Frontier Airlines
2026-10-01
2 stops
$371
Could you save more?
The airport you were going to fly from is often not the cheapest one. Compare every airport in a region against each other, or check whether a multi-day stopover beats the direct fare.
How cheap can flights from Chicago O'Hare to Porto get?
The cheapest fare we have tracked on this route is $329, compared with a typical $549 for a trip of this distance.
Is it cheaper to fly to Porto from a different airport?
Often, yes. Fares out of secondary airports are frequently cheaper than the obvious hub, but they are the ones most likely to be missing from a normal search. Our reverse search compares every airport in a region against each other so the cheaper departure point is not hidden.
Could a stopover make Chicago O'Hare to Porto cheaper?
Sometimes. On thin long-haul routes a two-leg trip with a multi-day stopover can beat the direct fare, and occasionally a direct fare is not sold at all. Our detour search prices those routings against the direct flight.