Flights from Chicago to Porto from $625

Compare All CHI to OPO Flights

Prices are per person for one-way travel. Click “Book” to complete your reservation on the partner site.

1 of 1 flight

Airline	Schedule	Stops	Duration	Price
TK TK · 186	11:25 CHI 02:55 OPO	0 stop(s)	39h 30m	$625 Best	Book →

Airport Information

Key details about departure and arrival airports for this route

OPO

Francisco de Sá Carneiro Airport

City: Porto
Country: PT
Type: Large Airport
Elevation: 228 ft

OPO Airport Guide →

Tips for Chicago to Porto Flights

Save money and travel smarter with these route-specific tips

📅 When to Book

Book CHI–OPO flights 6–8 weeks in advance for the best prices. Last-minute fares are typically 40–60% more expensive on this route.

💰 Price Trends

The average fare is $625, but prices as low as $625 are available.

✈ Direct vs Connecting

No direct flights currently listed. Consider flexible dates or nearby airports for better connections.

📍 Flexible Dates

Flying midweek (Tuesday–Thursday) on CHI–OPO is typically 15–30% cheaper. Use our price comparison to spot the best day to fly.

Top Hotels in Porto

Book accommodation at your destination — top-rated stays near OPO airport

Porto Essential Studio

Porto, 3.5★

10.0 $54/night

Póvoa Terrace | A Curated Escape w/Large Balcony

Porto

10.0 Check Price

Regras Apartments&Garden A2 by Benefit Collection

Stylish Retreat | Central Porto Stay w/Parking

Frequently Asked Questions

Everything you need to know about flying CHI to OPO

What is the cheapest flight from Chicago to Porto?

The cheapest flight from Chicago (CHI) to Porto (OPO) currently starts at $625 with TK. Prices are updated regularly and may vary by date and availability.

How many airlines fly from CHI to OPO?

We found 1 airline(s) operating on the CHI–OPO route, including TK.

Are there direct flights from Chicago to Porto?

No direct flights are currently listed on this route. All available options involve at least one stop. Consider flexible dates or nearby airports for better connection options.

What is the average flight price on this route?

The average flight price from Chicago to Porto is approximately $625. Prices range from $625 to $625 depending on airline, time, and class.

How long is the flight from CHI to OPO?

The average flight duration from Chicago to Porto is approximately 39 hours 30 minutes. Direct flights are typically shorter than connecting options.

What is the baggage allowance on CHI–OPO flights?

Baggage allowance varies by airline and fare class. Most economy fares on this route include 1 carry-on (7–8 kg) and 1 checked bag (20–23 kg). Always confirm baggage rules on the airline's site at booking — low-cost carriers may charge for checked bags.