$403 Find Cheap Flights from Portugal to Chicago - Compare and Save

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Cheap Flights from Portugal to Chicago

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portugal to Chicago

Fri, Dec 11 - Thu, Dec 24
Scandinavian Airlines Logo
5:45 pm - 4:45 pmOPO  Porto-ORD Chicago O'Hare Intl
29h 00m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
7:15 pm - 4:55 pmORD  Chicago O'Hare Intl-OPO Porto
15h 40m1 stop Kastrup Copenhagen
$586Scandinavian Airlines
Thu, Oct 29 - Thu, Nov 5
Scandinavian Airlines Logo
5:50 pm - 5:45 pmOPO  Porto-ORD Chicago O'Hare Intl
28h 55m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
7:15 pm - 11:10 amORD  Chicago O'Hare Intl-OPO Porto
33h 55m1 stop Kastrup Copenhagen
$612Scandinavian Airlines
Thu, Oct 29 - Thu, Nov 5
Scandinavian Airlines Logo
5:50 pm - 5:45 pmOPO  Porto-ORD Chicago O'Hare Intl
28h 55m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
7:15 pm - 11:10 amORD  Chicago O'Hare Intl-OPO Porto
33h 55m1 stop Kastrup Copenhagen
$619Scandinavian Airlines
Fri, Nov 20 - Sun, Nov 29
Scandinavian Airlines Logo
4:55 pm - 4:45 pmLIS  Lisbon Humberto Delgado-ORD Chicago O'Hare Intl
29h 50m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
7:15 pm - 4:05 pmORD  Chicago O'Hare Intl-LIS Lisbon Humberto Delgado
14h 50m1 stop Kastrup Copenhagen
$622Scandinavian Airlines
Thu, Jan 14 - Sun, Jan 17
Scandinavian Airlines Logo
4:55 pm - 4:45 pmLIS  Lisbon Humberto Delgado-ORD Chicago O'Hare Intl
29h 50m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
7:15 pm - 4:05 pmORD  Chicago O'Hare Intl-LIS Lisbon Humberto Delgado
14h 50m1 stop Kastrup Copenhagen
$644Scandinavian Airlines
Thu, Jan 14 - Mon, Jan 18
Scandinavian Airlines Logo
4:55 pm - 4:45 pmLIS  Lisbon Humberto Delgado-ORD Chicago O'Hare Intl
29h 50m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
7:15 pm - 4:05 pmORD  Chicago O'Hare Intl-LIS Lisbon Humberto Delgado
14h 50m1 stop Kastrup Copenhagen
$646Scandinavian Airlines
Thu, Jan 14 - Mon, Jan 18
Scandinavian Airlines Logo
4:55 pm - 4:45 pmLIS  Lisbon Humberto Delgado-ORD Chicago O'Hare Intl
29h 50m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
7:15 pm - 4:05 pmORD  Chicago O'Hare Intl-LIS Lisbon Humberto Delgado
14h 50m1 stop Kastrup Copenhagen
$648Scandinavian Airlines
Tue, Oct 20 - Tue, Oct 27
Multiple Airlines Logo
10:00 pm - 7:15 pmLIS  Lisbon Humberto Delgado-ORD Chicago O'Hare Intl
27h 15m2 stops Madrid Barajas Dublin
Multiple Airlines Logo
4:55 pm - 5:50 pmORD  Chicago O'Hare Intl-LIS Lisbon Humberto Delgado
19h 55m2 stops Dublin Madrid Barajas
$657Multiple Airlines
Thu, Oct 15 - Wed, Oct 28
TAP AIR PORTUGAL Logo
9:20 am - 12:40 pmLIS  Lisbon Humberto Delgado-ORD Chicago O'Hare Intl
9h 20mnonstop
TAP AIR PORTUGAL Logo
8:00 pm - 9:05 amORD  Chicago O'Hare Intl-LIS Lisbon Humberto Delgado
8h 05mnonstop
$659TAP AIR PORTUGAL
Thu, Oct 22 - Sun, Nov 8
TAP AIR PORTUGAL Logo
9:20 am - 12:40 pmLIS  Lisbon Humberto Delgado-ORD Chicago O'Hare Intl
9h 20mnonstop
TAP AIR PORTUGAL Logo
8:10 pm - 10:15 amORD  Chicago O'Hare Intl-LIS Lisbon Humberto Delgado
8h 05mnonstop
$665TAP AIR PORTUGAL
Booking Insights

KAYAK's insights & trends for flights to Chicago

Get data-powered insights and trends for flights to Chicago to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest day to fly to Chicago?

Based on KAYAK data, the cheapest day to fly to Chicago is Friday where round-trip tickets can be as cheap as $1,056. On the other hand, the most expensive day to fly is Wednesday, where round-trip prices are $1,095 on average.

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

The cheapest month for flights to Chicago O'Hare Intl Airport is February, where tickets cost $695 on average for return flights. On the other hand, the most expensive months are January and July, where the average cost of tickets from Portugal is $1,137 and $1,083 respectively. For one-way flights, the best month to travel is January with an average price of $569.

What is the cheapest time of day to fly to Chicago O'Hare Intl Airport?

The cheapest time of day to fly to Chicago O'Hare Intl Airport is generally in the morning, when round-trip flights cost $1,056 on average. The most expensive time of day to fly to Chicago O'Hare Intl Airport is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,056.

Good to know

Low season

November

Cheapest flight

$403
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Lisbon to Chicago

FAQs - booking Chicago flights

  • How far is Chicago O'Hare Intl Airport from central Chicago?

    You’ll need to travel 16 miles to reach the Chicago city center from Chicago O'Hare Intl Airport.

  • How much is a flight to Chicago?

    On average, a flight to Chicago costs $693. The cheapest price found on KAYAK in the last 2 weeks cost $584 and departed from Lisbon Humberto Delgado Airport.

  • How does KAYAK find such low prices on flights to Chicago?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Chicago.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Chicago?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Chicago?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Chicago?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to Chicago O'Hare Intl Airport are there each week?

    Each week there are around 28,193 direct flights from within Portugal to Chicago O'Hare Intl Airport. The most common day for departures is Sunday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to Chicago

  • Looking for cheap airfare to Chicago? 25% of our users found round-trip tickets to Chicago for the following prices or less: From Lisbon $1,442
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Chicago flight deals.

Reviews of the top airline flying from Portugal to Chicago

 
Need help choosing which airline to fly with to Chicago? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
TAP AIR PORTUGALOverall score based on 2387 reviews
7.2Comfort
6.4Entertainment
7.0Boarding
6.3Food
7.8Crew
Airline reviews

Flight was delayed more than 1.5 hours. Essentially no communication with passengers regarding how long the delay would last or any updates as to the delay.

8.0 ExcellentGordon, Aug 2026
Read more TAP AIR PORTUGAL reviews

Flight was delayed more than 1.5 hours. Essentially no communication with passengers regarding how long the delay would last or any updates as to the delay.

Clearer signage at Lisbon Airport and more communication about delays

Flight smooth and on-time. Food a joke, crew humorless but efficient. Really a budget airline masquerading as a flagship, but it gets you there.

Overall ok experience as couple feedback: for improvement: 1. The vegetarian food was less and ran out, so many of us didn’t get it. Not all the crew member were polite and could be more hospitable.

The flight was excellent because I chose to upgrade to Business Class. The only negative drawback was because I upgrade, it screwed their system up and they lost my luggage for 2 days, but it was then recovered.

Web site needs improvement Plane was clean and modern Lay Flat beds were hard and not to comfortable (business class )

Overall, everything was fine—the service, the food, and the entertainment—but the boarding process in Lisbon was a total mess. I’m not sure I’d fly with TAP again. It’s absurd to have to pay for good seats at the front of the plane only to board last; the overhead bins above your seat are likely already full thanks to passengers who boarded earlier—even though they might be seated at the back of the plane. I will think very carefully before flying with TAP Portugal again; it seems to me that they need to review their boarding process. I understand the logic of filling the plane from back to front, but the seats at the front are more expensive. Horacio Rodriguez

Boarding was delayed by one hour because cleaning and catering crews did not board the plane in time. Take off was delayed for another 40 minutes because of "rush hour scheduling". Vague descriptiion. My in-flight entertainment system was stuck initializing. The flight attendant indicated that they could not reset it without resetting everyone's system. Overall, a miserable experience.

Better leg room than expected in economy. Nice crew. Adequate bathrooms. Seat cushions a little thin, but recline well and have adjustable headrests. Best value. Liked having nonstop from ORD to Lisbon.

Excellent! Flight left a bit late but overall a pleasant experience.

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