$318 Find Cheap Flights from Chicago to Portugal - Compare and Save

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Cheap Flights from Chicago to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Lisbon
Lisbon1 stop$699
Porto
Porto1 stop$557
Faro
Faro1 stop$735
Ponta Delgada
Ponta Delgada1 stop$770
Funchal
Funchal1 stop$700
Lajes
Lajes1 stop$791
Lisbon
Lisbon1 stop$699
Porto
Porto1 stop$557
Faro
Faro1 stop$735
Ponta Delgada
Ponta Delgada1 stop$770
Funchal
Funchal1 stop$700
Lajes
Lajes1 stop$791
Booking Insights

Price, demand and travel trends for Chicago O'Hare Intl Airport to Portugal flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from Chicago O'Hare Intl Airport to Portugal cheaper or more expensive than last year?

Fares from Chicago O'Hare Intl Airport to Portugal are running about 9% higher than they were around this time last year, averaging $851 round-trip.

What are the cheapest fares from Chicago O'Hare Intl Airport to Portugal right now?

Here are the cheapest round-trip fares from Chicago O'Hare Intl Airport to Portugal on KAYAK in the last week:

• Porto (OPO) from $557
• Funchal Madeira (FNC) from $697
• Lisbon Humberto Delgado (LIS) from $699
• Faro (FAO) from $735
• Ponta Delgada Nordela (PDL) from $770

What’s the cheapest month to fly from Chicago O'Hare Intl Airport to Portugal?

February is the cheapest time of year to fly, with average fares of $590. Prices are highest in June, when average flight costs increase to around $1,093.

When is the best time to book flights from Chicago O'Hare Intl Airport to Portugal?

Book your flights 24 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 16% compared to booking last-minute (within 2 weeks of departure).

Which airport in Portugal is the cheapest to fly to from Chicago O'Hare Intl Airport?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Portugal are:

• Porto (OPO) from $848
• Funchal Madeira (FNC) from $862
• Lisbon Humberto Delgado (LIS) from $864

What’s the cheapest day to fly from Chicago O'Hare Intl Airport to Portugal?

Tuesday tends to be the cheapest day to fly from Chicago O'Hare Intl Airport to Portugal, while Saturday is the most expensive. Fares run about 17% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Chicago O'Hare Intl Airport to Portugal?

Data from the past 12 months shows it's cheapest to fly to Portugal during the morning with average prices of $818. The night is the most expensive time to fly, with average prices of $1,000.

Key details for Chicago O'Hare Intl Airport to Portugal flights

Low season

January

Cheapest flight

$318
Beat the crowds with an average 57% drop in travelers.
The most popular month to fly with an average 7% increase in travelers.
One-way flight from Chicago O'Hare Intl Airport to Porto

Your Chicago O'Hare Intl Airport to Portugal flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Chicago O'Hare Intl Airport to Portugal?

    Yes. Fares from Chicago O'Hare Intl Airport to Portugal are low right now. As a rule of thumb, a round-trip under $683 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Chicago O'Hare Intl Airport to Portugal?

    Over the past 12 months, round-trip fares from Chicago O'Hare Intl Airport to Portugal have ranged from $683 to $1,130.

  • What are the main airports serving Portugal?

    Portugal has 6 airports. The three busiest are Lisbon Humberto Delgado (LIS) (78% of arrivals), Porto (OPO) (12%) and Funchal Madeira (FNC) (4%).

  • What airlines fly nonstop from Chicago O'Hare Intl Airport to Portugal?

    Based on the flight schedule for the next 3 months, just one airline regularly flies nonstop from Chicago O'Hare Intl Airport to Portugal: TAP AIR PORTUGAL.

  • Where in Portugal can I fly nonstop from Chicago O'Hare Intl Airport?

    Based on the flight schedule for the next 3 months, you can only fly nonstop from Chicago O'Hare Intl Airport to Lisbon.

  • Is it cheaper to fly with a layover from Chicago O'Hare Intl Airport to Portugal?

    Yes. Nonstop flights from Chicago O'Hare Intl Airport to Portugal average $916 over the past 12 months, but flights with a layover can cost less. The most affordable connecting airports are:

    • Reykjavik Keflavik Intl (KEF) from $456
    • Kastrup Copenhagen (CPH) from $712
    • New York John F Kennedy Intl (JFK) from $741

  • How long is a flight from Chicago O'Hare Intl Airport to Portugal?

    Flights from Chicago O'Hare Intl Airport to Portugal take 8h 07m on average.

  • How often are flights from Chicago O'Hare Intl Airport to Portugal delayed and what's the average delay?

    26% of flights on this route are delayed by at least 15 minutes. The average delay is 1h 57m.

  • Which cabin classes are available on flights from Chicago O'Hare Intl Airport to Portugal?

    On flights from Chicago O'Hare Intl Airport to Portugal you can book Economy Class, Premium Economy Class, Business Class or First Class.

  • What are some popular landmarks in Portugal?

    KAYAK travelers' favorite landmarks in Portugal include:

    • Chiado
    • Ribeira Square
    • Avenida dos Aliados
    • Praça do Marquês de Pombal

  • What are the earliest and latest flights from Chicago O'Hare Intl Airport to Portugal?

    The earliest nonstop flight from Chicago O'Hare Intl Airport to Portugal departs at 6:00 pm and the latest departs at 9:10 pm. Nonstop flights take about 8h 07m.

Your guide to booking Chicago O'Hare Intl Airport to Portugal flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 24 weeks before your trip. KAYAK data shows fares in this window are around 16% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for February when flights are typically cheapest and avoid June when prices are at their highest.
  • Flying on Tuesday is usually the cheapest. Flights on Saturday cost about 17% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Porto (OPO) is the cheapest airport to fly into from Chicago O'Hare Intl Airport. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Lisbon, which is the most popular destination in Portugal. From there, it's easy to continue on to other popular destinations such as Porto, Albufeira and Funchal.
  • If you want the shortest trip, choose the Chicago O'Hare Intl Airport to Portugal nonstop route. If you'd rather save money, the route via Reykjavik Keflavik Intl (KEF) is usually the cheapest.

Reviews of the top 5 airlines serving from Chicago to Portugal

 
Need help choosing which airline to fly with from Chicago to Portugal? 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.
7.4
United AirlinesOverall score based on 10315 reviews
7.7Boarding
8.1Crew
7.1Entertainment
7.3Comfort
6.7Food
Airline reviews

On time. Carry on and personal bag was accommodated on the plane. Entertainment was accessible without bringing own device. Whole can of juice was provided rather than a pour.

10.0 ExcellentMonyee, Sep 2026
Read more United Airlines reviews

On time. Carry on and personal bag was accommodated on the plane. Entertainment was accessible without bringing own device. Whole can of juice was provided rather than a pour.

Price was crazy watch it if you Chan he your flight

On time, easy boarding. Anytime you sit in an economy seat, it’s uncomfortable. New plane and the bathrooms were in the galley at the back of the plane which seemed odd.

Terrible service - they don’t want to be there and bad food. Entertainment system in economy from the 2000s

No drink service but there was no N/A as an option to choose. Seats were extremely tight. I am under 5.5 and I bumped my knees have no idea how taller people could manage.

Flight delayed, last seat on the plane, no arrival Gate available due to the plane departing late

Kayak booked this flight with only 1h 20min layover in Chicago. This made it impossible for me and several other passengers to reach this flight. Moreover, the gate closed boarding in spite of several passengers still on their way without waiting even one more minute. However, the plane departed with 20min (!) delay, i.e., there would have been at least 15 min time to let the delayed passengers board without causing any delays. I complained and as a "thank you" the attendent booked us on the last (!) flight to Indianapolis ~7h later! Thankfully, I caught the spitefulness and the United customer line rebooked the flight to an earlier flight. Although I can't grade this particular flight since I never had a chance to take it, Kayak made the mistake of a too short layover and the crew at the gate was awful.

Flight did not have wifi service. It was experiencing technical difficulties. Definitely and old plane that needs updating.

This flight has a history of leaving late, however, I was pleasantly surprised that it was not delayed this day. The flight went smooth, except I was in a window seat and the wall and my feet were freezing. I found it difficult to sleep due to being so cold, I also was using 2 provided UAL blankets and could not get my feet warm. This was annoying, but I still made it there on time and safe.

Old 757 with poor entertainment system. United no longer partners with United for free text and email. O'Hara an absolute disaster! Limited gates clauses two hour delay. Unfortunately this appears to be the norm.

The embarkation at Dublin was a kin to a Ryanair approach, in other words a circuitous and cheep access

OK overall. Flight was delayed Crew on flight was good

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

I flew economy class. Seats were very good and the crew was excellent

Fast and sensible boarding was absolutely amazing. But extortionate wifi and seats that barely moved, making me unable to sleep, didn't do a lot of favors.

Excellent flight and crew. Boarding at Dublin Airport was a very difficult trying to find the right gate.

I appteciate the very courteous staff. The flight was good. Something that wasn't good was that my bag was only checked as far as Dublin and I had a connecting flight to Vienna. (That was a mistake the ORD desk made.) Fortunately the desk at DUB was able to re-tag without me having to re-check in (which initially it seemed I might have to do.)

It was excellent! The plane left Chicago early. Arrived in Dublin early. The crew was excellent! It was a great experience.

Horrible. Garbage airline. Due to the strike we got a replacement plane/crew. I didn't get my exit row seat I paid for. Food was horrible. Plane was hot and didn't have AC vents.

Are Longus was fine. I booked thru Kayak and was unable to get my business class seat early. Sat next to galley. Crew forgot to wake me for breakfast.

The in flight meal was absolutely delicious. One thing I noted was that the meals weren’t just prepackaged tv dinner style options but were actual prepared meals you could tell were cooked that day in a kitchen and individually packaged for the flight.

The flight took off two hours late. What was good was that I was getting an information on this earlier in the day. The lounge agent sent the passengers to the gate way too early. That was annoying. The food aboard was disgusting. The service aboard was okay. The seats were good. Overall, it's a very mediocre experience. Well, it's not a five-star airline and not one that aspires to be one. Comparing TAP Portugal to Iberia or Lufthansa, I'd rather see it as a three-star airline, even though it's website works much better than what Lufthansa has been trying to pull off for the past decade.

The plane was FABULOUS. The crew were wonderful and the food more than I expected.

The food was dry and tasteless. Boarding process was ridiculous. Lounge is Lisbon was of very poor quality. The website is nearly unusable. Customer service was challenging. This was my first transatlantic business class flight with TAP. There will not be another.

Disappointing Compared to other airlines , this one was the most expensive. But not even close, in getting what you paid for.

TAP canceled connection and we had to wait 15 hours for another flight to Milan. There were plenty of. Seats on earlier but because we were Excellence Class the would not let us downgrade which we were willing to. Don’t understand their logic? Plenty of seats but we couldn’t / they wouldn’t make the change.

Excellent experience - from boarding through the super smooth flight The food was mediocre and the app could be better but overall great experience

This was one of the worst flights I have ever taken in my entire life. First of all, I traveled Economy, but the seats were TINY and cramped. Not just for me; everyone around me was complaining of the same thing and said they could not get comfortable. Then there was the issue of the heat. For whatever reason the heat on the plane must have been turned to FULL BLAST, because even at 30,000 feet, it was SWEALTERING. Everyone was drench in sweat. Then, they were SO STINGY with the amount of drink they would give you. If you asked for water, it was in a tiny, paper cup (think bathroom cup) and they only filled it 3/4s of the way as if the cost came right out of the pockets of the air stewards. Everything was a money grab, you could tell! You had to pay for the WiFi, which was garbage slow, and the onboard entertainment was limited and stale. If I EVER fly TAP again, it will not be Economy class. What a disaster!

They blocked me from checking in online and they charged me lots of money

Everything was good with Tap Air Portugal. It was Logan Airport that was a problem. The fuel system was down and delayed my 10:40 boarding. I wasn't able to board my flight until 2:00 am...after that my flights were great.

Boarding was delayed 50 minutes. The flight going to Chicago was canceled, causing lots of problems and causing me to rebook and miss an event. I was traveling with a colleague, and he was unable to get on the same flight after 40 minutes on the phone, which meant I had to wait for him after my arrival. My flight down was delayed an hour before take off, had to sit on the plane, then 30 minutes after landing to get to a gate. No real food, only juice/ water offered for the 3.5 hours on the plane. Not a good experience.

The code sharing reservation with United was messed up requiring extra trip to airport to fix. Air Canada customer service 2.5 hours on hold and resolved nothing.

I'm 6'8" (2.03m) so more legroom would alwqys be appreciated, especially on long international flights. The food choices were underwhelming.

Didn’t make it on the flight. Delayed then had to be rebooked, which in turn had me waiting at the airport for another 8 hours before next flight

the check-in lady at ORD was extremely rude and unprofessional. very disappointed as it was supposed to be a celebration for my wife's birthday and it really put a damper on things. if i wanted to be treated like trash, i would have flown Economy! (as opposed to business class)

Short flight. Everything was fine except the flight was delayed twice for a total of an hour.

There labor disputes cancelled my flight less than 24 hours before my boarding time but there customer service/website was easy enough to navigate and they rebooked me for no upcharge.

Very bad, flight was cancelled due to strike and staff was unable to rebook us

Flight was delayed by 1.5hrs. Once inside, people had their small handbags on the storage. The crew (male guy) was not helpful in making some space in the storage. Instead, he asked few bags to be checked-in and it was not a great experience. No attempt to help but just followed the things with a straight face. People had their literally small bags and he wouldnt not move from one storage to another even if there was space and would not let us do i as well. Once flight was on, they ran out of Orange juice, really running out of orange juice when the temp were 32.degrees outside. didnt made the sense. Onasking for a extra snack, he made a face as if he was giving me out of his pocket. if the flight was delayed, there could have an attempt to provide something extra incase people did asked.

Abandoned me in hallway in a wheelchair… which I asked for because I sprained my back. After waiting in the hallway, I decided to walk the rest of the way since someone respecting me up.. My experience with the united was totally the opposite. Wheelchair access, propped swift and save me a lot of grief. Air Canada totally disorganized.

First class snacks - stewardess gave out multiples to everyone until there was almost no selection left when she got back to me last in first class cabin. Nothing left that I would eat.

My feedback from the trip to Columbia to Chicago was meant for Chicago to Denver.

The WiFi was out gr entire flight. Had to Diane for almost 1 hour to wait for a gate to open up for plane to dock. Very bad experience.

After boarding, the AC was shut off on the flight. At business class, I really could not breathe. I was absolutely dripping sweat. I was told by the FA that there was nothing they could do but I could stand by the door until departure. So, that's what I did. I was clearly in the way while the FAs were trying to do their work, but I had to be able to breathe. After that, of course, I had sweated up a lot so was very uncomfortable for the six hour flight.

DELAYED AGAIN and AGAIN and AGAIN - not only that, you delay in 20 minute increments for hours and hours instead of having an accurate delay understanding.

AA was fine....the overall experience was subpar, but not due to the airline due to broader issues

No ground air conditioner for the plane. Very hot and humid prior to take off which was an uncomfortable period of time.

Check-in process was poor, very poor, only one person to check-in all passengers, so if one passenger had a check-in issue, all other passengers were delayed. All check-ins should have two airline staff to check-in passengers.

The flight up was great no issues. The flight back home was a cluster. I was told the plane I was waiting on was giving to another flight which caused me to miss my connection flight. Granted the airline did great with getting hotel and vouchr for food.

Flight was delayed and so much of inconvenience related to the gate change.

More options for your flight from Chicago to Portugal

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