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Find cheap flights from Chicago to Portugal from $285

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 8/17. 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.
1 adult
0 bags
Tue 7/9
Tue 7/16

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Best Portugal Flight Deals

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

Lisbon
Lisbon1 stop$700
Ponta Delgada
Ponta Delgada1 stop$585
Horta
Horta1 stop$1,346

Good to know

Low season

January

High season

September

Cheapest flight

$285
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Chicago to Porto

FAQs - booking Portugal flights

  • How can I quickly get to O’Hare International Airport from Chicago?

    If you’d like to quickly get to O’Hare International Airport from Chicago, you should board the CTA Blue Line L train. Onboard this train, you’ll get to the airport after roughly 40min. Given that the CTA Blue Line L train is also the cheapest means to get to O’Hare International Airport from Chicago, boarding it is financially advisable.

  • Which airport in Portugal should I fly to if I intend to visit other European countries?

    If you intend to fly to other European countries after visiting Portugal, you should book a flight that lands at Humberto Delgado Airport in Lisbon. Here, you can get a flight that heads to Spain, Malta, Finland, Britain, Netherlands, and even Luxembourg.

  • Which airlines that travel from Chicago to Portugal are eco-friendly?

    If you’re a fan of sustainable travel, you should consider traveling with either British Airways or United Airlines to Portugal from Chicago, as these two airlines have taken considerable steps to minimize their carbon footprint.

  • What are the popular layover options for flights to Portugal from Chicago?

    There are numerous layover options for flights from Chicago to Portugal. The most frequented options are London, Zurich, and Paris. You should board a British Airways flight if you’d like to have a layover in London, a Swiss Air Lines flight if you’d like to have a layover in Zurich, and an Air France flight if you’d like to stop over in Paris.

  • 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 to Portugal from 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 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 to Portugal with an airline and back to Chicago 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 to Portugal from Chicago 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

  • Morning departure is around 4% more expensive than an evening flight, on average*.
  • All flights from Chicago to Portugal usually take off from the prestigious O’Hare International Airport. Located northwest of Chicago’s central business district, this airport is quite positively reviewed, as it has plenty of amenities. Some of the amenities you’ll have access to at this airport include on-site restaurants, boutique shops, spacious lounges, and an urban garden. This remarkable airport also has a free yoga room where you can relax while waiting for your flight. Given that the lines here are pretty short, you’ll find it easy to check in.
  • Several airlines offer flights from Chicago to Portugal. Although none of these airlines offer direct flights, a good number of them offer one-stop flights. For example, Lufthansa Airlines, British Airways, KLM Royal Dutch Airlines, United Airlines, and Air France offer one-stop flights to Lisbon from Chicago, while Swiss Air Lines offers one-stop flights from Chicago to Faro.
  • The airport you choose to land at in Portugal should be close to the destinations you intend to visit. If you plan on touring the northern part of Portugal, you should book a flight that lands at Francisco Sá Carneiro Airport in Porto, whereas if you plan on touring the southern part of Portugal, you should book a flight that lands at Faro Airport in Faro. If the places you intend to visit are not so far away from the capital, then you should hop on a flight that lands at Humberto Delgado Airport in Lisbon.
  • Just like all other countries, Portugal has strict entry rules. Thus, before embarking on any flight from Chicago to Portugal, it’s essential that you have your entry documents in order. If you’re a US citizen, you must have a valid passport, a document to show that you have sufficient funds to stay in the country, and a return plane ticket. If you plan on staying for a period longer than 90 days, you must have a visa.
  • In Portugal, children under the age of 12 must be seated in child car seats while in a car. If you plan on touring Portugal with your young child, it’s in your best interest to carry a child car seat. If you don’t have one, kindly ensure that any cab you hail has one. This way, you’ll avoid any issues with the Portuguese authorities.
See more tips
*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 10310 reviews
8.6Crew
7.9Comfort
8.2Boarding
7.4Food
8.0Entertainment
Airline reviews

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

2.0 MediocreJim, Jun 2024ATL - ANC
Read more about Delta reviews

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

If I can, I always fly Delta. I’ve found their service to always be reliable and pleasant.

You could have not cancelled the flight (AA, which I will be flying from now on) left for BOS despite the fictitious weather issues (that no one in my Boston family could see). You could have rebooked my direct flight to another direct flight instead of sending me though JFK, the worst US airport after O’Hara You could have rebooked me on a Main Cabin seat (like the one I paid for in my original ticket instead of putting me a the last row on JFK->BOS leg, pocketing the difference in ticket price But I do not really care whether you will ever do that in a future because in a future neither I nor anyone from my company (unless they pay out of pocket) nor an of my clients and partners (if they heed my advice) will ever be caught dead on any of Delta flights

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

It was pretty good I was worried with the short Layover that I might not catch my connection but the gate was there

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

Standard flight experience, but there is only power at the seat to row 20 on the aircraft, on my initial check in it did not say that was the case

Energetic crew - flight full of swiftied going to Taylor's opening show in Paris! Long lines for bathroom made out kind of suck though

I’ve had a couple flights this week on United that were delayed by an hour or more

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

Nothing beats ANA customer service on my opinion. Maybe because of their Japanese culture (and food). Arigatō

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

Flight delayed for 2 hours due to a part. The plane sat waiting for boarding for a long time and during final preflight inspection the issue was found. Why not do the preflight inspection sooner if you know the plane is being used?

We left our child’s tablet on our seat 12 B on the plane and we can’t get a hold of anyone to try to get help locating the tablet.

My flight was cancelled after a 7 hour delay. I am awaiting a refund.

Disappointing. Had to pay 70 euros for one checked bag. Transatlantic flight was cramped, not very comfortable

Ability to select seating would be nice. We were family of three and they had us seated back to back and one of us on the other side of the plane??? That is pretty goofy. Especially when tickets were placed two months in advance.

Good. Madrid to SFO was way better than ARN to Madrid. Mercifully, the seats to Madrid didn't recline. So although there was no leg room, your knees didn't get crushed

I am quite satisfied. The flight was on time and landed early. Staff was friendly.

I could change to business before flight and everything was perfect except for entertainment which was none.

Needed more info on connecting flight. Late flight made very short connection. Lost luggage that we still do not have!

Seats comfortable on economy plus and attendants very helpful. Food was ok. Bathrooms needed servicing.

Original flight was cancelled - After waiting 2 hours for new take-off times. Then had to stand in line for 3 hours, ending at 2:30 am - to be told, " No hotel rooms anywhere in Dallas". No way for me to get any rest at DFW at that time of night.

The check in process was terrible. Took a long time to check in because there is not enough agents. Once we got to gate, no announcement to board, all of a sudden people got up and board. The seats were EXTREMELY UNCOMFORTABLE. It was a 3 hours international flight, and we were served one tiny cup of water. 😩😩 The temperature was so hot inside rhe plane we thought we were sitting in an oven. Very difficult to find a flight attendant for assistance. They ran up and down aisle to serve first class but never really look up to seve the rest of the flight. I would never fly on this airline again. The experience was horrible.

What didnt i like? You had to pay for seats after the booking was paid for. If i knew that beforehand i would have booked with emirates for a few dollars more

Most important was the effciency - on-time take-offs and landings, no missed connections, baggage arrived correctly. Friendly & professional crew. Less important was food/drink. Pretty spartan, but we'll know next time and bring our own stuff.

Great airline, new, comfortable and quiet planes. Plenty of leg room and state of the art entertainment system. The big downside is the connection in Lisbon. The airport is small and a bus is needed from the plane to the terminal. Is a mess, takes a lot of time, nobody gives an explanation, boarding zones are not honored, etc.

I thought Miami's airport was very disorganized during the Boarding.

Very efficient boarding - other airlines could learn from them. Friendly, efficient crew. Red eye flight, so dinner meal was irrelevant. Breakfast could have been more substantial. Seats reasonably comfy.

People seated in exit rows should have designated overhead space

I have been flying internationally for most of like. My first trip with TAP- wonderful! I look forward to flying with them more frequently in the future!

Larger seats on this plane made the ride reasonably comfortable. Our next flight, from Lisbon to Copenhagen, was inconsiderately tight and stressful. The seats were smaller, space between rows was very limited (no button or mechanism to even slightly incline anyone’s seat), and leg-cramping under the seat in front. Just like sardines in a can. Really felt for all the tall Danes on the flight. Their knees were pressed against the seat in front throughout the flight.

Flight was 2+ hrs late boarding. Delay updates were nonexistent. Boarding Gate change was by word of mouth.

Economy class has no legroom so if you have the money worth to upgrade! Food was absolutely horrible! The crew was super nice!!!!!

The flight was provided by Aer Lingus and our seats were in a poor condition (15A & 15C). They looked like they needed repairing/replacing and were uncomfortable for such a long flight. Also the arm rests on Aer Lingus planes do not lift more than around 45 degrees, instead of the usual 90 degrees upright, meaning you cannot maximum the space between you & your travel companion so as to be more comfortable for such a long flight.

Flights were actually with Aer Lingus outward and American Airlines & Aer Lingus on the return journey. Outward flight with Aer Lingus was good but the return flight with them was not so good as our seats were in a poor condition (15A & 15C) and looked like they needed replacing! The American Airlines flight from Miami to JFK New York was good and the seats were very comfortable and spacious (32D & 32E)

Awful. Delay, lost vacation time and travel time now more than 24h

Awful. Flight delayed and we missed our long flight to Rome. It has been a nightmare and we have still not arrived. It was NOT a weather delay, just poor planning by AA

Boarding was as fast and efficient as possible. The flight crew were amazing and extremely friendly. We enjoyed our flight.

Very bed boarding, there was overbooked and make a lot of problems and noises

There was a problem in the luggage because there were not porters

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

Book cheap flights from Chicago to Portugal

Recent round-trip flight deals

11/6Wed
1 stopTAP AIR PORTUGAL
13h 50mORD-OPO
12/11Wed
1 stopTAP AIR PORTUGAL
16h 30mOPO-ORD
$469
11/6Wed
1 stopTAP AIR PORTUGAL
11h 50mORD-OPO
12/11Wed
1 stopTAP AIR PORTUGAL
16h 30mOPO-ORD
$470
11/8Fri
2 stopsIberia
16h 15mORD-OPO
11/12Tue
1 stopIberia
12h 10mOPO-ORD
$523
11/6Wed
2 stopsDelta
18h 15mORD-OPO
12/11Wed
2 stopsDelta
22h 00mOPO-ORD
$530
11/8Fri
2 stopsIberia
16h 15mORD-OPO
11/12Tue
2 stopsIberia
17h 20mOPO-ORD
$533
11/4Mon
2 stopsBritish Airways
20h 42mORD-FNC
11/11Mon
2 stopsBritish Airways
48h 27mFNC-ORD
$535
11/24Sun
1 stopDelta
17h 00mORD-OPO
12/2Mon
2 stopsDelta
19h 40mOPO-ORD
$539
11/3Sun
2 stopsUnited Airlines
25h 55mORD-OPO
11/10Sun
1 stopUnited Airlines
20h 05mOPO-ORD
$559
11/23Sat
1 stopUnited Airlines
17h 30mORD-OPO
12/2Mon
1 stopUnited Airlines
30h 55mOPO-ORD
$637
8/26Mon
1 stopBritish Airways
22h 05mORD-LIS
9/4Wed
1 stopBritish Airways
13h 10mLIS-ORD
$703

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Recent one-way flight deals

8/17Sat
2 stops
42h 40mORD-OPO
$285
8/11Sun
2 stops
23h 55mORD-OPO
$309
8/11Sun
1 stopTAP AIR PORTUGAL
31h 45mORD-OPO
$312
7/27Sat
1 stopTAP AIR PORTUGAL
17h 20mORD-FAO
$314
7/14Sun
1 stopIberia
15h 20mORD-LIS
$520
7/14Sun
1 stopIberia
12h 20mORD-LIS
$524
7/19Fri
2 stopsUnited Airlines
20h 05mORD-LIS
$590
8/25Sun
1 stopBritish Airways
14h 30mORD-LIS
$637
9/9Mon
2 stopsBritish Airways
18h 11mORD-FNC
$688
6/27Thu
2 stopsUnited Airlines
15h 30mORD-LIS
$928

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Last minute flights from Chicago to Portugal

Last minute flight, train and bus deals

6/10Mon
multi-stopDelta
19h 30mORD-OPO
6/25Tue
multi-stopDelta
15h 20mOPO-ORD
$830
6/11Tue
multi-stopDelta
15h 58mORD-OPO
6/19Wed
multi-stopDelta
18h 12mOPO-ORD
$838
6/11Tue
multi-stopDelta
20h 06mMDW-OPO
6/19Wed
multi-stopDelta
18h 31mOPO-MDW
$838
6/10Mon
multi-stopKLM
23h 30mORD-OPO
6/25Tue
multi-stopKLM
15h 20mOPO-ORD
$839
6/12Wed
multi-stopKLM
18h 18mORD-LIS
6/19Wed
multi-stopKLM
14h 42mLIS-ORD
$926
6/10Mon
multi-stopAir France
17h 40mORD-LIS
6/17Mon
multi-stopAir France
27h 58mLIS-ORD
$1,002
6/10Mon
multi-stopAir France
17h 40mORD-LIS
6/17Mon
multi-stopAir France
29h 05mLIS-ORD
$1,003
6/12Wed
multi-stopTAP AIR PORTUGAL
31h 35mORD-OPO
6/19Wed
multi-stopTAP AIR PORTUGAL
17h 15mOPO-ORD
$1,130
6/10Mon
nonstopTAP AIR PORTUGAL
8h 00mORD-LIS
6/17Mon
nonstopTAP AIR PORTUGAL
9h 10mLIS-ORD
$1,322
6/12Wed
multi-stopAmerican Airlines
18h 55mORD-LIS
7/31Wed
multi-stopAmerican Airlines
20h 05mLIS-ORD
$1,572

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Flights to Portugal

Return flight deals:

Portugal - Chicago

Cabin classes:

$2,371
$3,640
$371