Cheap Flights from Chicago to Porto
No deal from Chicago to Porto has cleared our price bar yet. What we have seen on the route is below.
Across 3 months of observations from Chicago to Porto, the lowest round-trip fare we recorded was $480, in September. The typical fare was $613. September was the cheapest month we saw and August the dearest.
The most recent price we saw on this route was $582 on Tap Air Portugal, seen Oct 17. It is an unverified observation and may have changed.
See every deal <a href="/from/chicago">from Chicago</a>, <a href="/to/porto">to Porto</a>, or the return direction <a href="/from/porto/to/chicago">Porto to Chicago</a>.
Latest price we saw: Chicago to Porto
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| Chicago (ORD) to Porto (OPO) | $582 | 7.4¢ | Oct 30 – Nov 5 | Tap Air Portugal | Oct 17 | Check price |
Price history: Chicago to Porto
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $582 | $587 | 53 |
| Sep 2026 | $480 | $583 | 111 |
| Aug 2026 | $668 | $669 | 148 |
Frequently asked questions
How many flight deals from Chicago to Porto are on Sparkflights right now?
There are 0 verified deals from Chicago to Porto on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Chicago to Porto?
The lowest fare we've recorded from Chicago to Porto is $480, based on 312 price observations over 3 months.
How much does a flight from Chicago to Porto cost?
The typical round-trip fare we observed from Chicago to Porto is $613, against a recorded low of $480. These are observations, not quotes.
When is the cheapest month to fly Chicago to Porto?
September was the cheapest month we observed from Chicago to Porto and August the dearest, over 3 months of data.
What is the current price from Chicago to Porto?
The most recent fare our sweep saw from Chicago to Porto is $582, on Oct 17. It is an unverified observation rather than a verified deal, so check it before booking.