$296 Find Cheap Flights from Chicago to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Portugal departing on 3/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Best Portugal Flight Deals from Chicago

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Lisbon
Lisbon1 stop$495
Porto
Porto1 stop$473
Ponta Delgada
Ponta Delgada1 stop$621
Funchal
Funchal1 stop$582
Faro
Faro1 stop$542
Lajes
Lajes2 stops$945

Good to know

Low season

January

High season

September

Cheapest flight

$296
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Chicago to Funchal

FAQs - booking Portugal flights

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

    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 from Chicago to Portugal.

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

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

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

    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 from Chicago to Portugal 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 from Chicago to Portugal?

    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 from Chicago to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Portugal

  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly from Chicago is February.
  • Morning departure is around 2% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

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.
8.0
DeltaOverall score based on 8140 reviews
7.3Food
8.5Crew
7.9Entertainment
8.0Comfort
8.2Boarding
Airline reviews

Seats are much much more comfortable than United, which is what I usually fly

10.0 ExcellentEmily, Feb 2025BOS - SFO
Read more Delta reviews

Seats are much much more comfortable than United, which is what I usually fly

Zero updates from the pilots for 30 minutes in the tarmac

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

I loved having a most black flight crew during Black History Month; rather by design or accident I appreciated the representation. ❤️

This was the second flight this week with flight attendant Marcus I’m not sure if his last name is Lane or Lang but this guy is awesome. He funny, attentive and his service is 5 stars. Marcus makes business travel more enjoyable !

Although the flight left late, we arrived early. It was one of the quickest boarding and off boarding experiences I’ve had. It was kind of annoying the only drinks they had were water, coffee, and tea. The flight was very smooth, temperature was just right, and flight attendants were friendly.

Rode in a smaller plane and short trip meant no snacks, no free wifi or tv. It was only 30min flight so honestly wasn’t a big deal to lack these items.

Lower number on this flight so spaced out passengers. Able to enjoy more room to relax during flight. It was lovely.

Kind staff. Snacks are small but that’s the new normal.

Overall, terrible. Flight from SFO was delayed due to “air traffic control issues”, and we were all mislead about connecting flights. Told “you have 20 minutes to catch your connection”. Reality was 5. We got to watch the plane sit at the bridge. Won’t fly Delta with a connection again.

Had a short delay once we boarded the aircraft in Chicago, but it was fixed in no time flat then we were on our way. The pilot was able to make up the time lost and we landed 5 minute later then schedualed . Great service

Our seats were all the way in back of the plane,

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence.

Fight was delayed an hour due to operational issues ,then further delayed due to ground control for a total of about 1.30 hours. Salad was completely frozen and flatware was so cold you could barely handle it. Crew was friendly and professional and the flight was smooth. The aircraft was clean and well-serviced.

The flight attendants in First Class were mediocre at best. They did not take our tray away until we were about to land and only did so when I press the call button. The United person at the United Club was asked to get us our boarding pass since we missed the flight due in Chicago. She argued that we did not have seats on the flight given to us in Moline. Furthermore, she was adamant that we did not have a First Class ticket. After I spent much time with her trying to show we were correct, she reluctantly agreed. She was probably the most incompetent ticketing person I have ever met and I have traveled 3 million miles on United plus many additional miles with other carriers. United has definitely deteriorated in more than on way.

Short flight - no food understandable. Flight was delayed for over an hour. Overall, it was good.

We arrived early and finally made it to our gate almost an hour after.

Was a pain having to leave the plane and reboard but glad the plane was fixed

Plane was was better than th YVR to ORD flight but was a fraction of the distance. Fly your better planes on longer distance flights.

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

This particular flight wasn't very full at the back, so there were three seats available for spreading out and getting relatively comfortable

Most of the delay was due to weather which is not what was at issue here. One delay was due to a missing flashlight and in the end the flashlight was actually found on the plane. The entertainment system is very limited. Live TV options offer only a few channels that are not very appealing. Boarding and deplaning are always difficult. It just takes too much time to get on and off the plane. On the plus side, I missed my connecting flight, but was easily able to book a later flight from the app while enroute.

You were more on time than United. I'm so over united delays.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

My flight attendant was attentive! The elderly person next to me was flatulent and the flight attendant could see that I was in distress and brought me some face masks

My boarding pass wouldn't pull up in the app very easily and had to really dig through my email. That caused a delay in TSA..

I had a TERRIBLE experience with the AA crew. I believe it was disability-related. It’s unlikely I will fly AA again.

Baby cried a lot. Nothing anyone could do about it. Just part of flying.

Flight was packed. This was a very uncomfortable experience. Boarding process could be explained better. Despite recommending a window seat when travelling with a pet in the cabin, the seat in front of me had less space than the center and aisle seats. For Premium Economy, the seats were crammed with minimal legroom. I hate to think what Regular Economy was like. The cabin crew missed me at first when handing out meals. When my meal eventually came, there were no utensils. I'd originally booked to fly Business Class; those seats didn't look that great either.

Flight was packed. This was a very uncomfortable experience. Boarding process could be explained better. Despite recommending a window seat when travelling with a pet in the cabin, the seat in front of me had less space than the center and aisle seats. For Premium Economy, the seats were crammed with minimal legroom. I hate to think what Regular Economy was like. The cabin crew missed me at first when handing out meals. When my meal eventually came, there were no utensils.

First time and I enjoyed the trip…. Will fly again soon 🔜

Delayed flight because other plane was occupying the gate for longer than expected. Once we boarded the plane had to wait 1 hour before taking off. We. Almost lost our connection flight and the baggage didn’t make it. We had to wait two days to receive our luggage. Hope they improve the timing or work with the airport to get better service.

I’m still missing my bags. I’m soo frustrated

TAP boarding gate agents singled out Group A line to gate check all carry on bags …. Supposedly because of lack on bin space. BUT ALL OTHERS WERE PERMITTED WITH CARRY ON BAGS. Additionally so many passengers entering the plane after us were permitted carry on bags. And when the plane was fully loaded, there was a number of open spaces in the overhead bins. I WILL SEARCH OTHER OPTIONS BEFORE FLYING TAP AGAIN

Boarding went fast. Lisbon's gates are too small for the flights they serve.

Baggage check in was very slow. No sign that the check in was TAP until the station opened. Understaffed and overworked team.

Great pilot, textbook landing in madeira. Everything else, from booking to checkin, plane quality, seat amenities, crew engagement, and overall experience were significantly below standard. I WOULD NOT FLY TAP IF THERE IS ANY OTHER OPTION.

Our flight was canceled for a reason that suggests gross mismanagement. We were re-booked for a flight to a different airport.

Boarding crew is unfriendly as i was asked to handover carryon luggage too upto final destination Bangalore I was not prepared for that and i had to travel without my diabetic and hypertension medicines

I was charged fees for check in bags at the airport by British Airways. It was supposed to be no charge but Kayak messed up my booking apparently and I had to pay for check in bags. I paid $175.

They took my carry on and checked it in. Staff in general at Heathrow are not friendly or helpful

The crew were professional and friendly. It was the most uncomfortable international flight I've ever flown. Crammed in passengers. No overhead space to put my bag. No leg room and unable to recline seat due to seats too close together so it upset passenger behind me! Upgrade price to get 2 inches of more space unreasonable.

Boarding in Dallas was hell with extremely rude gate agents , especially a lady named Rajathi who was the epitome of rudeness with no compassion at all . She was horrible and I wonder why airlines have people like her on their roster who exude arrogance and haughtiness . Will probably not fly British Airwsys because of people like her .

Less than average, low level of shared required information needed during the transfer from airport to another, also the used team during boarding In Indianapolis station is Not Professional

Food was average. Better headphones seats were average at best.

Nice flight. Legroom was good. Food was good. Staff was friendly and helpful. Plane was modern and clean. Seats and headrests were comfortable. Entertainment system was good and modern, with a bright LCD screen and many appealing choices.

I have something to say about the flight I took from London to Gothenburg, after my flight from Austin to London. I fly a lot and have done so for decades. I first flew to Scandinavia in 1973. My former wife is Norwegian. The main thing was the experience at the Gothenburg airport. Three flights from Britain arrived around the same time. So there were huge lines at immigration since Brits are no longer a part of the EU. After over an hour in line, I finally gave my passport to the immigrations man. You’d have thought I was an Afghan. I just barely got into Sweden. I had to answer all kinds of blunt questions. I had to show all kinds of onward tickets, addresses of places I’d be staying and it was pretty daunting. Perhaps it has to do with the situation with Russia. British Air might have done something to prepare people that things have changed a lot and they’d better be ready to run the gauntlet when trying to get into the country here. Thanks for listening and taking this into consideration. Sincerely, a senior citizen of the USA

No land services during boarding, specially while moving from terminal to another

Book cheap flights from Chicago to Portugal

Recent round-trip flight deals

4/1Tue
1 stopSWISS
15h 10mORD-OPO
4/8Tue
1 stopSWISS
13h 15mOPO-ORD
$473
4/1Tue
1 stopSWISS
15h 10mORD-OPO
4/8Tue
1 stopSWISS
13h 15mOPO-ORD
$476
3/30Sun
1 stopUnited Airlines
31h 25mORD-LIS
4/8Tue
1 stopUnited Airlines
29h 22mLIS-ORD
$513
4/2Wed
nonstopTAP AIR PORTUGAL
7h 55mORD-LIS
4/9Wed
nonstopTAP AIR PORTUGAL
9h 15mLIS-ORD
$517
4/1Tue
2 stopsUnited Airlines
16h 30mORD-OPO
4/8Tue
1 stopUnited Airlines
12h 55mOPO-ORD
$517
4/2Wed
nonstopTAP AIR PORTUGAL
7h 55mORD-LIS
4/9Wed
nonstopTAP AIR PORTUGAL
9h 15mLIS-ORD
$531
3/18Tue
2 stopsDelta
16h 55mORD-OPO
3/25Tue
2 stopsDelta
17h 41mOPO-ORD
$531
3/11Tue
1 stopBritish Airways
14h 00mORD-LIS
3/18Tue
1 stopBritish Airways
23h 45mLIS-ORD
$538
3/26Wed
2 stopsDelta
17h 10mORD-LIS
4/4Fri
1 stopDelta
15h 10mLIS-ORD
$551
3/30Sun
1 stopBritish Airways
14h 45mORD-FNC
4/7Mon
1 stopBritish Airways
22h 55mFNC-ORD
$582

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Recent one-way flight deals

3/31Mon
3 stops
55h 05mORD-FNC
$296
5/14Wed
3 stops
34h 55mORD-LIS
$313
3/9Sun
nonstopTAP AIR PORTUGAL
7h 50mORD-LIS
$347
5/10Sat
1 stopBritish Airways
22h 00mORD-LIS
$386
4/12Sat
nonstopTAP AIR PORTUGAL
8h 00mORD-LIS
$387
4/19Sat
1 stopBritish Airways
34h 20mORD-LIS
$402
8/15Fri
1 stopUnited Airlines
13h 30mORD-FAO
$438
3/5Wed
2 stopsUnited Airlines
12h 50mORD-LIS
$439
3/9Sun
2 stopsDelta
16h 09mORD-LIS
$454
3/16Sun
2 stopsDelta
18h 15mORD-LIS
$455

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Last minute flights from Chicago to Portugal

Last minute flight, train and bus deals

3/2Sun
multi-stop
18h 00mORD-LIS
3/12Wed
multi-stop
14h 00mLIS-ORD
$528
3/2Sun
multi-stopDelta
19h 45mORD-LIS
3/12Wed
multi-stopDelta
15h 30mLIS-ORD
$529
3/4Tue
multi-stopUnited Airlines
10h 01mORD-LIS
3/20Thu
multi-stopUnited Airlines
21h 05mLIS-ORD
$535
3/3Mon
multi-stopUnited Airlines
10h 35mORD-LIS
3/21Fri
multi-stopUnited Airlines
33h 56mLIS-ORD
$541
3/1Sat
multi-stopBritish Airways
30h 19mORD-LIS
3/21Fri
multi-stopBritish Airways
14h 01mLIS-ORD
$574
3/2Sun
multi-stopBritish Airways
18h 00mORD-LIS
3/9Sun
multi-stopBritish Airways
14h 01mLIS-ORD
$590
3/2Sun
nonstopTAP AIR PORTUGAL
7h 50mORD-LIS
3/12Wed
nonstopTAP AIR PORTUGAL
9h 35mLIS-ORD
$640
2/28Fri
multi-stopAmerican Airlines
12h 30mORD-LIS
3/9Sun
multi-stopAmerican Airlines
18h 07mLIS-ORD
$643
3/2Sun
nonstopTAP AIR PORTUGAL
7h 50mORD-LIS
3/7Fri
nonstopTAP AIR PORTUGAL
9h 30mLIS-ORD
$690
2/28Fri
multi-stopAmerican Airlines
11h 00mORD-LIS
3/8Sat
multi-stopAmerican Airlines
15h 14mLIS-ORD
$770

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Everything you need to know for your flight from Chicago to Portugal

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