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$307 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 10/31. 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.
1 adult
0 bags
Sat 6/8
Sat 6/15

Search hundreds of travel sites at once for deals on flights to Chicago O'Hare Airport

 
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 43,968,530 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 $574. 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 $614 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 $1,098 and $953 respectively. For return trips, the best month to travel is November with an average price of $614.

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 $1,096.

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 5,208 per week, followed by American Airlines with 4,263 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, Faro, which takes 15h 25m, and Porto, which takes 17h 45m.

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

There are around 1,542 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 10,788 direct flights from within Portugal to Chicago O'Hare Intl Airport. The most common day for departures is Friday, 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

$307
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Lisbon 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 $779. The cheapest price found on KAYAK in the last 2 weeks cost $615 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, +77 more

ANA, Aer Lingus, +78 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, +77 more

ANA, Aer Lingus, +78 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 11030 reviews
6.7Food
7.1Entertainment
7.7Boarding
8.1Crew
7.2Comfort
Airline reviews

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

8.0 ExcellentAnonymous, Apr 2024YUL - ORD
Read more about United Airlines reviews

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.

Good movies, iffy pay WiFi, food ok- on time though and that was great!

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.

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.

Always find Aer Lingus reliable and good value for money. Food on this flight was pretty basic and the headphone Jack at my seat only worked for one ear. Little disappointed in movie selection, limited on recent releases. Staff are okay - but I always buy a cheap ticket so not like I expect first class opulence anyway!!!

Boarding was so quick, flight was ahead of time which is great and the pilot spoke clearly and was letting people know everything, amazing, love travelling with you 😊

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

Everything was nearly perfect, and TAP staff were especially helpful when we missed our connecting flights and had to get on the next flight to Rome. The only aspect that could have been better was boarding: it was somewhat disorganized, which created a bit of stress. But in the end, everyone got on the plane, so the less-then-perfect boarding process did not take away from the overall excellent experience.

TAP Air makes you take a bus on arrival or departure, making it difficult for passengers to make connections.

Two of three flight attendants were not super kind as I would expect. The very kind young lady in my section was wonderful but then lady and man up front were not. Sorry but it makes a difference !

Great staff who were ready working with smile 6 in the morning on New Year’s Day. Although security checkpoint was way too busy, the airline staff were understanding and waited few minutes after boarding. We took off not only exactly on time, but arrived 20 minutes early. Two thumbs up!!!

I would have preferred something lighter for the second meal. Maybe a small sandwich .

They cancelled our flight the morning of departure at 4:30am.

Coach seats are too tight. Seem designed for small people. Food different but OK. Staff helpful.

my original flight was cancelled the previous day, and i was rescheduled onto this flight, which left much earlier in the morning, impacting my previous evening and requiring me to get up much earlier in the morning to get to the airport online. This practice happens way way way too much, and it seems on every airline, though AA is probably the worst.

Spending 10 hours on a flight with no video or wifi access due to issues per stewardess was not enjoyable nor acceptable. Will follow up directly with the airline as well

I really did not like being ordered to pull my shade down by the attendants. One of them was very rude to me about it, standing there until I closed it like I was a child brusquely reaching across me to close an adjoining one. They claim it was so people who wanted to could sleep. It’s a 10:30am flight not a red eye. Closing your shade or leaving it up for natural light should be a choice. Ruined my flight!

My baggage did not arrived with me. Took 3 days to get it after so may calls and follow up

The crew was very attentive and kept busy serving a variety of treats!

Terrible. Flight was 3 hours delayed and I missed my other flight to my final destination

Offered vegetable curry when it was actually tofu which I don’t care for.

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.
5/21Tue
2 stops
32h 21mLIS-ORD
5/29Wed
2 stops
27h 30mORD-LIS
$587
9/19Thu
2 stops
33h 00mOPO-ORD
9/22Sun
2 stops
17h 10mORD-OPO
$593
11/3Sun
1 stopTAP AIR PORTUGAL
15h 25mFAO-ORD
11/17Sun
1 stopTAP AIR PORTUGAL
21h 25mORD-FAO
$644
6/4Tue
1 stopUnited Airlines
19h 55mOPO-ORD
6/11Tue
1 stopUnited Airlines
13h 10mORD-OPO
$725
6/8Sat
1 stopUnited Airlines
13h 40mOPO-ORD
6/17Mon
1 stopUnited Airlines
11h 10mORD-OPO
$737
5/22Wed
2 stopsAmerican Airlines
16h 36mLIS-ORD
5/28Tue
1 stopAmerican Airlines
18h 00mORD-LIS
$749
6/6Thu
1 stopAmerican Airlines
12h 05mOPO-ORD
6/13Thu
2 stopsAmerican Airlines
17h 30mORD-OPO
$764
11/3Sun
2 stopsTAP AIR PORTUGAL
46h 23mFAO-ORD
11/17Sun
1 stopTAP AIR PORTUGAL
13h 20mORD-FAO
$826
8/7Wed
1 stopAer Lingus
19h 15mLIS-ORD
8/16Fri
1 stopAer Lingus
13h 00mORD-LIS
$995
8/7Wed
1 stopAer Lingus
19h 15mLIS-ORD
8/15Thu
1 stopAer Lingus
17h 25mORD-LIS
$1,010

Search by stops

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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.
10/31Thu
2 stops
23h 53mLIS-ORD
$307
10/7Mon
2 stops
27h 13mLIS-ORD
$309
10/30Wed
1 stopTAP AIR PORTUGAL
12h 35mOPO-ORD
$568
6/7Fri
1 stopTAP AIR PORTUGAL
12h 00mOPO-ORD
$588
10/10Thu
2 stopsAmerican Airlines
28h 25mOPO-ORD
$625
8/31Sat
2 stopsAmerican Airlines
14h 34mLIS-ORD
$642
7/27Sat
1 stopAer Lingus
26h 50mLIS-ORD
$730
7/27Sat
1 stopAer Lingus
21h 45mLIS-ORD
$739
5/27Mon
1 stopUnited Airlines
20h 50mLIS-ORD
$845
5/20Mon
2 stopsUnited Airlines
22h 46mLIS-ORD
$848

Search by stops

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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.
5/14Tue
multi-stop
30h 04mLIS-ORD
5/19Sun
multi-stop
25h 25mORD-LIS
$677
5/14Tue
multi-stopFinnair
16h 05mLIS-ORD
5/19Sun
multi-stopFinnair
23h 15mORD-LIS
$767
5/14Tue
multi-stopAmerican Airlines
21h 09mLIS-ORD
5/19Sun
multi-stopAmerican Airlines
20h 45mORD-LIS
$782
5/14Tue
multi-stopAmerican Airlines
20h 21mLIS-ORD
5/19Sun
multi-stopAmerican Airlines
24h 05mORD-LIS
$786
5/13Mon
multi-stop
13h 45mLIS-ORD
5/22Wed
multi-stop
14h 35mORD-LIS
$804
5/13Mon
multi-stopAmerican Airlines
13h 45mLIS-ORD
5/22Wed
multi-stopAmerican Airlines
13h 18mORD-LIS
$934
5/13Mon
multi-stopAmerican Airlines
16h 24mLIS-ORD
5/22Wed
multi-stopAmerican Airlines
13h 18mORD-LIS
$942
5/14Tue
multi-stopTAP AIR PORTUGAL
14h 03mLIS-ORD
5/19Sun
nonstopTAP AIR PORTUGAL
7h 55mORD-LIS
$2,039
5/13Mon
multi-stopTAP AIR PORTUGAL
22h 51mLIS-ORD
5/22Wed
nonstopTAP AIR PORTUGAL
8h 00mORD-LIS
$2,052
5/13Mon
nonstopTAP AIR PORTUGAL
9h 15mLIS-ORD
5/22Wed
nonstopTAP AIR PORTUGAL
8h 00mORD-LIS
$2,151

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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:

$3,006
$974