Cheap Flight Tickets from Chicago (CHI) to Porto (OPO)

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Latest Flight Deals from Chicago to Porto

Book one-way or return flights from Chicago to Porto from as little as AU$ 525. Choose from the popular airlines below and book your flight today!

One way
Return

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Searching for the best last minute flight from Chicago to Porto? Find one-way or return flights that are affordable and fit your itinerary.

Trip.com monitors the ticket fares of flights from Chicago to Porto. Stay updated on price trends and snag the best deals for your upcoming trip.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Airlines Flying from Chicago to Porto

View airlines operating flights from Chicago to Porto. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

American Airlines

From AU$ 525

Spirit Airlines

From AU$ 534

Frontier Airlines

From AU$ 581

Icelandair

From AU$ 608

United Airlines

From AU$ 608

Porter Airlines

From AU$ 663

TAP Air Portugal

From AU$ 702

Air Canada

From AU$ 726

Delta Air Lines

From AU$ 749

Scandinavian Airlines

From AU$ 755

ANA airlines

Find more flights and airlines

Alternative Routes from Chicago to Porto

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Chicago to Porto.

Cheapest
ORD
08:20
18h 25m
1 transfer
OPO
08:45
O'Hare International Airport - Francisco Sa Carneiro International Airport
Tue, May 7American Airlines
AU$ 525
MDW
07:20
22h 20m
2 transfer
OPO
11:40
Midway International Airport - Francisco Sa Carneiro International Airport
Tue, May 7Frontier Airlines
AU$ 581
MDW
07:20
22h 20m
2 transfer
OPO
11:40
Midway International Airport - Francisco Sa Carneiro International Airport
Tue, May 7Frontier Airlines
AU$ 581
Find More Flights

How do I find the cheapest flights?

When are flight from Chicago (CHI) to Porto (OPO) the cheapest?
Airlines adjust prices for flights from Chicago to Porto based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much are flights from Chicago (CHI) to Porto (OPO) cost?
According to Trip.com's data, the lowest price is around AU$ 1,949.
What is the transportation method from the main airport to downtown in Porto?
- The distance from Francisco Sa Carneiro International Airport to downtown is about 9km, by taxi about 20 minutes.
How many airports in Porto (OPO)?
There are 1 airport(s) in Porto (OPO): Francisco Sa Carneiro International Airport.

How to find a cheap flight from Chicago to Porto

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Chicago to Porto. Book your flights at the right time and save more.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

Check airline and travel agency websites for latest flight deals

Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

Use the Trip.com App

Save up to £10 per person when booking your flights on Trip.com