Title: CA $759 Cheap Flights from Porto (OPO) to Chicago (CHI) - Expedia.ca ![City of Chicago. Image of Chicago downtown and Chicago River with bridges at sunny summer day](https://images.trvl-media.com/place/178248/e6aa83ce-7ad8-43a5-9d1d-b055eefa7e78.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178248/e6aa83ce-7ad8-43a5-9d1d-b055eefa7e78.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $759 Cheap Flights from Porto (OPO) to Chicago (CHI) [View CA $759 flight on Sun, May 3, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:OPO,to:ORD,departure:03/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:758.20&airProductToken=AQp3CkAI1KABEgQxOTM5GO5zIIuSASiN_IsDMMn8iwM4TEAAWAFqB0RJU0NJTlRyCExMMERTSTA1egoIzpIBEgQxOTM5CjMI1KABEgMyNDMYi5IBIK4cKNz-iwMwjIOMAzhMQABYAWoHRElTQ0lOVHIITEwwRFNJMDUSCggBEAEYASoCVFAYASIECAEQASgCKAMoBDAN) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Porto Airport (OPO) to Chicago - ![TAP Portugal](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_TP.svg) TAP Portugal [](https://www.expedia.ca/Flights-Search?leg1=from:OPO,to:CHI,departure:14/01/2026TANYT&leg2=from:CHI,to:OPO,departure:21/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TP"}}]) - ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.ca/Flights-Search?leg1=from:OPO,to:CHI,departure:14/01/2026TANYT&leg2=from:CHI,to:OPO,departure:21/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:OPO,to:CHI,departure:14/01/2026TANYT&leg2=from:CHI,to:OPO,departure:21/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![Turkish Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_TK.svg) Turkish Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:OPO,to:CHI,departure:14/01/2026TANYT&leg2=from:CHI,to:OPO,departure:21/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TK"}}]) - ![SAS](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_SK.svg) SAS [](https://www.expedia.ca/Flights-Search?leg1=from:OPO,to:CHI,departure:14/01/2026TANYT&leg2=from:CHI,to:OPO,departure:21/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SK"}}]) - ![Iberia](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_IB.svg) Iberia [](https://www.expedia.ca/Flights-Search?leg1=from:OPO,to:CHI,departure:14/01/2026TANYT&leg2=from:CHI,to:OPO,departure:21/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"IB"}}]) - ![Air Europa](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UX.svg) Air Europa [](https://www.expedia.ca/Flights-Search?leg1=from:OPO,to:CHI,departure:14/01/2026TANYT&leg2=from:CHI,to:OPO,departure:21/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UX"}}]) - ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from Porto (OPO) to Chicago (CHI) Prices were available within the past 7 days and start at CA $759 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip __Flight from Porto to Chicago (OPO - CHI) route information__ | Origin airport | Dr. Francisco de Sa Carneiro | | ------------------- | ---------------------------- | | Destination airport | CHI-All Airports | | Distance | 6345 km | ## Porto to Illinois Flights **The easy way to book your flights from Porto to Chicago** With Expedia, it’s simple to find and book flights to Chicago from Porto whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to CHI-All Airports, too. Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Porto to Chicago today, tomorrow, or this week. **Save dollars with cheap flights from Dr. Francisco de Sa Carneiro, OPO to CHI-All Airports, CHI** Sort your search results by price to find great deals on your flight from Porto to Chicago—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Chicago from Porto currently is just rising to . Here are more money-saving tips: - Fly in when flight prices are normally at their lowest - Book about a month to 6 weeks before you travel for the best prices to Chicago - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! **Reasons to choose Expedia for your flight to Chicago from Porto** Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Chicago with Expedia today. \*Available to Expedia members.