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$289 Find cheap flights from Portugal to Chicago O'Hare Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to O'Hare Intl departing on 6/10. 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
Sat 6/29
Sat 7/6

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These are the airlines KAYAK users have selected most often from within our search results for flights to Chicago
These are the airlines KAYAK users have selected most often from within our search results for flights to Chicago
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Flights to O'Hare Intl - Travel Insights & Trends

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

What is the cheapest day to fly to Chicago?

The average price of all flights to Chicago O'Hare Intl Airport clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Chicago is Sunday where tickets can be as cheap as $580. On the other hand, the most expensive day to fly is Monday, where prices are $882 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights to Chicago O'Hare Intl Airport is November, where tickets cost $595 on average for one-way flights. On the other hand, the most expensive months are July and June, where the average cost of tickets from Portugal is $1,065 and $965 respectively. For return trips, the best month to travel is November with an average price of $595.

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

The average price for all flights to Chicago O'Hare Intl Airport depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Chicago O'Hare Intl Airport is generally at night, when flights cost $620 on average. The most expensive time of day to fly to Chicago O'Hare Intl Airport is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,117.

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price, you should book around 0 weeks before departure. For the absolute cheapest price, our data suggests you should book 46 days before departure.

Which airline offers the most flights to Chicago O'Hare Intl Airport?

Of the 12 airlines that fly to Chicago O'Hare Intl Airport, United Airlines offers the most flights, with around 4,400 per week, followed by American Airlines with 2,642 flights per week.

How long is the flight to Chicago O'Hare Intl Airport?

The duration of your flight to Chicago depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to Chicago on KAYAK are from Lisbon, which takes 9h 10m, Porto, which takes 12h 15m, and Faro, which takes 15h 25m.

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

There are around 1,143 direct flights from within Portugal to Chicago O'Hare Intl Airport every day. Most flights depart in the morning, with 6:00 am the most common departure time and 52% of flights departing in the morning.

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

Each week there are around 7,995 direct flights from within Portugal to Chicago O'Hare Intl Airport. The most common day for departures is Thursday, with 15% of flights taking off on this day.

How many long-haul flights are there to Chicago O'Hare Intl Airport each week?

There are not any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to Chicago O'Hare Intl Airport. Instead, there are 5 long-haul flights (6-12 hour flight duration), with the most arriving from Lisbon.

How many cities have direct flights to Chicago O'Hare Intl Airport?

From Portugal, there are direct flights to Chicago O'Hare Intl Airport from 1 city. This city is Lisbon and there are 5 direct flights each week.

Good to know

Low season

February

High season

June

Cheapest flight

$289
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Porto to Chicago

FAQs - booking Chicago O'Hare Airport flights

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

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

  • How much is a flight to Chicago?

    On average, a flight to Chicago costs $824. The cheapest price found on KAYAK in the last 2 weeks cost $582 and departed from Lisbon Humberto Delgado Airport.

  • How does KAYAK find such low prices on flights to Chicago O'Hare Airport?

    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 O'Hare Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport 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 O'Hare Airport?

    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 O'Hare Airport 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 O'Hare Airport?

    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 O'Hare Airport 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 Chicago O'Hare Airport

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Chicago O'Hare Airport flight deals.

Prefer to fly non-stop to Chicago O'Hare Intl?

Find which airlines fly direct to O'Hare Intl, which days they fly and book direct flights.

Nonstop departures

Portugal to Chicago O'Hare Intl

Monday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Wednesday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Thursday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +78 more

ANA, Aer Lingus, +79 more

Saturday

ANA, Aer Lingus, Aerolineas Argentinas, +78 more

ANA, Aer Lingus, +79 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

See more direct flights

Nonstop returns

Chicago O'Hare Intl to Portugal

Monday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Wednesday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Thursday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +78 more

ANA, Aer Lingus, +79 more

Saturday

ANA, Aer Lingus, Aerolineas Argentinas, +78 more

ANA, Aer Lingus, +79 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

See more direct flights
See more direct flights

Top 5 airlines serving from Portugal to O'Hare Intl

 
See real verified KAYAK customer reviews for airlines flying to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Portugal to Chicago. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to O'Hare Intl? 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 10777 reviews
7.2Comfort
8.1Crew
6.7Food
7.1Entertainment
7.7Boarding
Airline reviews

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

10.0 ExcellentEllen, May 2024GSP - ORD
Read more about United Airlines reviews

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

It was good! Appreciated that it was very on schedule so it made the connecting flight less stressful

I was told we'd have a hot breakfast option in first class, so I chose not get a hot breakfast. It was a very strange meal, but the fresh fruit was very good quality. Service was excellent from ORD to ELP. No service from MBS to ORD, not even water. However, when flying American from FNT to ORD, which is a shorter flight, they at least pass out snacks and offer water.

We were delayed an hour leaving Munich (No fault of the crew). They kept us posted on the status so we knew what was going on, but as a result we missed our connection in Chicago and the communication on connecting flights was pretty poor as we disembarked. It was already stressful and some of that could have been reduced by better communications about where to find transfers, etc.

One problem, but a serious one - the plane is built with electric windows that tint dark to reduce light. Sitting next to the window is VERY UNCOMFORTABLE as it emits so much HEAT in the face when tinted.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

Wifi wasn't working on one of the UA flights after boarding.

The flight was delayed instead of leaving at 11 it left at 12.20

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Crew was not very helpful. They forgot to serve me coffee and had to wait for a long time.It looked as if they were not very happy with what they were doing.

Left on time. Arrived early. Turbulence coming in and gate not open due to early arrival but expected.

The CX617 from HK to BKK was delayed more than 1.5 hours.

The plane was old and in new of a cleaning up and renovating on the interior. Seats and carpets were very worn and dirty looking. Cushioning on the seats was broken down and not as comfortable as newer jet seats. Food was a little below average but okay. Staff were friendly and hard working but did not pick up debris or food they spilled when collecting from the customers. But they were very helpful and professional.

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

Flight was fine. It took an unusually long time to have baggage delivered to the carousel in ORD.

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

The flight got canceled due to mechanical issues, and he to be rebooked and missed my appointments for that day

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

Plane could have been cleaner. There were many crumbs and crud around the seat mounts.

I was pleasantly surprised - it has been awhile since I traveled with them - other than being delayed leaving Malaga everything ran very smoothly- yes I would travel with aer Lingus again and yes I would recommended

the room on the plane was good but that is because flight not sold the other three seat and I had room. the food in terrible.

The only problem was there are games on the entertaiment system. The guy behind me played poker the entire time and poking the back of my seat. I hope they remove these.

First the price I paid was excellent, my flight was full, but my seat was roomy. The one downside to the experience was they had games on the entertainment console. The guy behind me poked at my head about half the flight. I hope they get rid of this feature.

They should. Heck planes more often not when they are suppose to be leaving causing delays

Aer Lingus interior is not the cleanest. I've seen crumbs on the seat and wrappers on the floor when I boarded

The transatlantic flight was wonderful. The regional reminded me of jet blue. Crazy and packed. Not enough overhead space and tough on elderly.

Thankfully not a full flight so although my headphone jack wasn’t working 100% on my window seat, I was able to move to the aisle seat. Food was fine, nothing great but tasty enough. Crew were friendly and made enough rounds. Always have a decent experience with Aer Lingus

Crew was fantastic got lovely food and plenty of water. Entertainment was good. Never had to ask for anything. Left on time and got to Seattle early. Luggage did not take long either.

Efficiency was great - on-time takeoff and landing. Baggage arrived at destination (there's always slow baggage handling in Boston.) TAP food is spartan - bring your own. But the efficiency of the airline more than makes up for the mediocre cuisine.

On-time flight. Nothing out of the ordinary. The food offering upfront could be better.

Delayed takeoff was inconvenient. We should have boardrd later. Coffee/ beverage service on a 7:30 flight would have been good.

Flight from Lisbon to Barcelona was ok. Business flight Boston to Lisbon was awful. Attendants should pay more attention to Business Passengers and not be so stingy with water. Worse Business Flight I have ever taken. Food was awful. Cramped for space.

Adequate. You get what you pay for. Absolutely no frills but a cost effective way to travel between European countries.

Disastrous boarding. Entered air bridge only to descend stairs and enter a bus. Plane had insufficient storage, was old and chair recline was damaged. Air stewardess was sullen.

I wish to bring to your attention an incident involving a flight attendant that occurred on my recent journey. The attendant displayed a lack of courtesy, which was concerning. For instance, after accidentally spilling water on a passenger, the attendant dismissed the situation rather than offering a proper apology. Additionally, when I handed over my trash, the attendant reacted negatively because I placed a paper cup on the tray, she told me this doesn't go here and threw it back on my table. It was apparent that she was experiencing a challenging day, which unfortunately impacted the service provided to myself and other passengers. While I understand that everyone can have an off day, it is essential for customer-facing staff to seek support to manage personal stress without it affecting their professional responsibilities.

The flight crew was good, the flight itself was quick and comfortable

Boarding was late by 30 min due to a bus missing to take us to the plane... And then the flight was delayed by about 90 minutes, in a 60 min flight

Very agressive with bags both arrival and departures found minor damage to my luggage including my check bag being broken into nothing of value was in there so I do not believe anything was taken but definitely broken zipper into the outer pockets of suitcase

My worst flying experience so far. This flight was delayed a total of 42 hours and diverted to New York before it was finally cancelled. It was delayed 4 and a half hours in London. As we were scanning our boarding passes at the gate they advised that the flight was being diverted to JFK since the delays caused us to missed the open hours for Charlotte international customs and immigration. We were assured multiple times by airport personnel, flight attendants, and the Pilot that we would land at JFK go through customs and immigration and then reboard the plane to fly to Charlotte in the same night. When we landed in New York the pilot advised us as we were retrieving our carry on luggage that we were delayed till 10am the next morning and to see guest services to get a room for the night. During this time I had to purchase a room for a family member in Charlotte which drove over 4 and a half hours to pick us up from Charlotte. This could have been avoided if American Airlines had been up front about the delay. Then after standing in line for over 2 and a half hours at guest services we were taken by taxi to a hotel 30 minutes out of the way. Luckily I looked for other flights that night and found one at 8 am to get on. The initial flight which we were scheduled to fly to charlotte in was delayed 12 more times and was finally cancelled 42 hours after it was supposed to land. I am unaware of what happened to the guest that were supposed to fly on the flight after we were placed on another flight but 42 hours in delays for a direct flight is absolutely ridiculous.

The boarding to Gatwick was a breeze but the boarding from Gatwick was a nightmare. The onboard service to Gatwick had a lot to be desired but the onboard sevice from Gatwick was amazing ! Very nice,friendly and funny ! Would I recommend BA to anyone.? ! Yes I would!

Is it American Airlines or British Airways? This is so confusing. I got it from Portugal.

Appreciate free wine and entertainment plus good meals. Also leg room

Really quick check in and security at Heathrow Terminal 5. Staff on board were lovely and very friendly. Could have provided a few more drinks on the flight but they were available at the back of the plane.

they are improving. The crew from Charlotte to Tampa was outstanding. SMILING and trying to be helpful with the customers.

It was a flight operated by Aer Linus for BA and the plane and crew were very good but the food selection was average.

I like the food this time compared to my departure. I’m seated at the isle so it’s comfortable but I have to pay $124 for seat selection

Flight delayed an hour due to plane maintenance issues after getting in line to board. Issue was plane galley ovens which eliminated hot meals for overseas flight. Cold selections were limited due to availability. Drink and meal service (already an hour delayed) was very slow. Upon arrival in Nashville, had to sit at gate for about 15 minutes before disembarking with no explanation. Local police then boarded plane as we were disembarking so maybe that was the issue.

Leg space was not enough. The meal was not satisfactory.

Book cheap flights from Portugal to Chicago

Recent round-trip flight deals

 
These are the cheapest round-trip flights to Chicago found on KAYAK in the last 72 hours.
6/12Wed
2 stops
29h 34mLIS-ORD
7/23Tue
1 stop
26h 32mORD-LIS
$584
6/12Wed
2 stops
29h 34mLIS-ORD
7/22Mon
1 stop
26h 32mORD-LIS
$597
6/12Wed
1 stopTAP AIR PORTUGAL
16h 05mFAO-ORD
7/20Sat
1 stopTAP AIR PORTUGAL
17h 20mORD-FAO
$706
6/12Wed
1 stopAer Lingus
26h 50mLIS-ORD
7/20Sat
1 stopAer Lingus
18h 40mORD-LIS
$739
8/21Wed
1 stopAer Lingus
19h 15mLIS-ORD
12/11Wed
1 stopAer Lingus
12h 15mORD-LIS
$781
10/9Wed
2 stopsAmerican Airlines
19h 05mLIS-ORD
10/16Wed
1 stopAmerican Airlines
18h 45mORD-LIS
$791
11/13Wed
nonstopTAP AIR PORTUGAL
9h 35mLIS-ORD
11/20Wed
nonstopTAP AIR PORTUGAL
7h 50mORD-LIS
$814
6/22Sat
2 stopsAmerican Airlines
19h 00mLIS-ORD
6/23Sun
1 stopAmerican Airlines
32h 25mORD-LIS
$868
6/14Fri
1 stopUnited Airlines
19h 55mOPO-ORD
7/27Sat
1 stopUnited Airlines
11h 10mORD-OPO
$903
6/18Tue
1 stopUnited Airlines
19h 55mOPO-ORD
8/12Mon
1 stopUnited Airlines
13h 17mORD-OPO
$904

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Chicago found on KAYAK in the last 72 hours.
6/10Mon
3 stops
48h 00mOPO-ORD
$289
6/11Tue
3 stops
43h 34mOPO-ORD
$304
11/22Fri
1 stopAer Lingus
13h 05mLIS-ORD
$506
11/1Fri
nonstopTAP AIR PORTUGAL
9h 30mLIS-ORD
$577
6/13Thu
nonstopTAP AIR PORTUGAL
9h 25mLIS-ORD
$578
6/18Tue
1 stopAer Lingus
21h 45mLIS-ORD
$616
10/10Thu
2 stopsAmerican Airlines
28h 25mOPO-ORD
$630
8/28Wed
2 stopsAmerican Airlines
16h 35mLIS-ORD
$644
7/29Mon
2 stopsDelta
18h 44mLIS-ORD
$927
7/29Mon
2 stopsDelta
18h 16mLIS-ORD
$930

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Last minute flights to O'Hare Intl

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Chicago that are departing in the next 10 days.
6/2Sun
multi-stop
22h 40mLIS-ORD
6/13Thu
multi-stop
32h 55mORD-LIS
$1,035
6/2Sun
multi-stopBritish Airways
28h 35mLIS-ORD
6/13Thu
multi-stopBritish Airways
20h 00mORD-LIS
$1,063
6/2Sun
multi-stop
41h 10mLIS-ORD
6/13Thu
multi-stop
18h 10mORD-LIS
$1,236
6/2Sun
multi-stop
29h 24mLIS-ORD
6/13Thu
nonstop
8h 00mORD-LIS
$1,247
6/2Sun
nonstopTAP AIR PORTUGAL
9h 20mLIS-ORD
6/13Thu
nonstopTAP AIR PORTUGAL
8h 00mORD-LIS
$1,341
6/2Sun
multi-stop
37h 45mLIS-ORD
6/13Thu
multi-stop
17h 35mORD-LIS
$1,522
5/31Fri
multi-stopDelta
19h 17mLIS-ORD
6/4Tue
multi-stopDelta
17h 23mORD-LIS
$3,863
5/31Fri
multi-stopDelta
15h 20mLIS-ORD
6/4Tue
multi-stopDelta
17h 23mORD-LIS
$4,429
5/31Fri
multi-stopKLM
15h 01mLIS-ORD
6/4Tue
multi-stopKLM
14h 55mORD-LIS
$4,938
5/31Fri
nonstopTAP AIR PORTUGAL
9h 20mLIS-ORD
6/4Tue
multi-stopTAP AIR PORTUGAL
19h 35mORD-LIS
$5,508

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Flights to Chicago O'Hare Airport

Destination:

Chicago O'Hare Airport (ORD)United States

Return flight deals:

Chicago O'Hare Airport - Portugal

Cabin classes:

$2,460
$930