HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Porto (OPO) to O'Hare Intl (ORD) from $278

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight 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.
OPO — ORD
May 22 — May 291
From?
To?
Wed 5/22
Wed 5/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheap flight deals from Porto to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 17, 2024.

Popular in

April

Cheapest in

February

Average price

$879

Round-trip from

$223
High demand for flights, 51% potential price rise
Search Deals
Best time to find cheap flights, 39% potential price drop
Search Deals
Average for round-trip flights in May 2024
Search Deals
From Porto to Chicago O'Hare Intl
Search Deals

What is the cheapest day to fly round-trip from Porto to Chicago O'Hare Intl Airport?

Friday is generally a great day to depart. Flying on this day could help you save up to 20%.

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

Flights from Porto to Chicago O'Hare Intl Airport lean towards being more expensive in July. Prices are generally better when you fly from Porto to Chicago O'Hare Intl Airport in September, with the cheapest ticket starting at $645.

When is the cheapest time to fly from Porto to Chicago O'Hare Intl Airport (OPO - ORD)?

When flying from Porto to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap Turkish Airlines flights from Porto to O'Hare Intl

Explore cheap flight options specifically provided by Turkish Airlines for the route between Porto and O'Hare Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 17, 2024.
Take a peek at the cheapest Turkish Airlines flights we've detected traveling from Porto to Chicago. Be sure to come back soon if the deals available don't appeal to you at this time.
Thu 7/114:50 pmOPO - ORD
1 stop22h 50mTurkish Airlines
Sat 8/108:30 pmORD - OPO
1 stop32h 40mTurkish Airlines
Deal found 5/16$1,046
Thu 8/812:15 pmOPO - ORD
1 stop35h 30mTurkish Airlines
Thu 8/158:30 pmORD - OPO
1 stop32h 25mTurkish Airlines
Deal found 5/17$1,080
Thu 8/812:15 pmOPO - ORD
1 stop35h 30mTurkish Airlines
Wed 8/1411:25 amORD - OPO
1 stop17h 50mTurkish Airlines
Deal found 5/17$1,081
Thu 8/84:50 pmOPO - ORD
1 stop30h 55mTurkish Airlines
Mon 8/1211:25 amORD - OPO
1 stop16h 50mTurkish Airlines
Deal found 5/17$1,138
Tue 8/64:50 pmOPO - ORD
1 stop22h 50mTurkish Airlines
Mon 8/1211:25 amORD - OPO
1 stop16h 50mTurkish Airlines
Deal found 5/17$1,227

Cheap KLM flights from Porto to O'Hare Intl

Explore cheap flight options specifically provided by KLM for the route between Porto and O'Hare Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 17, 2024.
Take a gander at the lowest prices we've found on KLM flights from Porto to Chicago. Make sure to examine the flight information before completing your reservation.
Thu 7/115:00 amOPO - ORD
1 stop15h 15mKLM
Sat 8/101:35 pmORD - OPO
2 stops15h 05mKLM
Deal found 5/16$1,067
Fri 8/98:40 pmOPO - ORD
1 stop23h 35mKLM
Thu 8/154:25 pmORD - OPO
1 stop12h 15mKLM
Deal found 5/17$1,072
Fri 8/96:30 amOPO - ORD
1 stop13h 50mKLM
Wed 8/142:00 pmORD - OPO
2 stops14h 40mKLM
Deal found 5/17$1,103
Thu 8/86:30 amOPO - ORD
1 stop13h 45mKLM
Wed 8/142:00 pmORD - OPO
2 stops14h 40mKLM
Deal found 5/17$1,155
Wed 8/76:30 amOPO - ORD
2 stops18h 05mKLM
Thu 8/154:25 pmORD - OPO
1 stop23h 50mKLM
Deal found 5/17$1,172
Wed 8/76:30 amOPO - ORD
2 stops18h 05mKLM
Wed 8/142:00 pmORD - OPO
2 stops14h 40mKLM
Deal found 5/17$1,204
Thu 8/89:15 amOPO - ORD
2 stops17h 47mKLM
Fri 8/164:20 pmORD - OPO
1 stop20h 30mKLM
Deal found 5/17$1,237
Thu 8/89:15 amOPO - ORD
2 stops17h 47mKLM
Wed 8/142:00 pmORD - OPO
2 stops14h 40mKLM
Deal found 5/17$1,269
Fri 8/99:15 amOPO - ORD
2 stops17h 56mKLM
Wed 8/142:00 pmORD - OPO
2 stops14h 40mKLM
Deal found 5/17$1,318

Cheap Porto to O'Hare Intl flights in May & June 2024

Find cheap flight options from Porto to O'Hare Intl specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 17, 2024.
Check out some of the best flight deals from Porto to Chicago in 2024. Check back in a little while for more flight options.
Thu 5/2312:35 pmOPO - ORD
1 stop13h 35mUnited Airlines
Wed 6/59:30 amORD - OPO
2 stops15h 25mUnited Airlines
Deal found 5/15$733
Thu 6/66:00 amOPO - ORD
1 stop15h 00mUnited Airlines
Thu 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/17$770
Thu 6/612:35 pmOPO - ORD
1 stop13h 35mUnited Airlines
Thu 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/16$777
Thu 6/612:35 pmOPO - ORD
2 stops16h 45mUnited Airlines
Thu 6/2011:45 amORD - OPO
1 stop13h 10mUnited Airlines
Deal found 5/17$778
Sat 6/157:20 pmOPO - ORD
1 stop22h 50mMultiple Airlines
Sat 6/226:35 pmORD - OPO
1 stop20h 20mMultiple Airlines
Deal found 5/16$790
Sat 6/157:20 pmOPO - ORD
1 stop26h 35mSWISS
Sat 6/223:50 pmORD - OPO
2 stops58h 05mSWISS
Deal found 5/16$874
Thu 5/237:20 pmOPO - ORD
2 stops22h 40mSWISS
Wed 6/52:20 pmORD - OPO
2 stops17h 25mSWISS
Deal found 5/15$884
Thu 6/612:35 pmOPO - ORD
2 stops16h 45mUnited Airlines
Thu 6/209:30 amORD - OPO
2 stops15h 25mUnited Airlines
Deal found 5/16$891
Thu 6/69:00 amOPO - ORD
2 stops15h 52mUnited Airlines
Thu 6/209:30 amORD - OPO
2 stops15h 25mUnited Airlines
Deal found 5/17$892

Porto to O'Hare Intl 2024 flight deals

Discover exclusive flight deals for travel between Porto and O'Hare Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 17, 2024.
Check out some of the best flight deals from Porto to Chicago in 2024. Check back in a little while for more flight options.
Thu 5/2312:35 pmOPO - ORD
1 stop13h 35mUnited Airlines
Wed 6/59:30 amORD - OPO
2 stops15h 25mUnited Airlines
Deal found 5/15$733
Thu 6/66:00 amOPO - ORD
1 stop15h 00mUnited Airlines
Thu 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/17$770
Thu 6/612:35 pmOPO - ORD
1 stop13h 35mUnited Airlines
Thu 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/16$777
Thu 6/612:35 pmOPO - ORD
2 stops16h 45mUnited Airlines
Thu 6/2011:45 amORD - OPO
1 stop13h 10mUnited Airlines
Deal found 5/17$778
Sat 6/157:20 pmOPO - ORD
1 stop22h 50mMultiple Airlines
Sat 6/226:35 pmORD - OPO
1 stop20h 20mMultiple Airlines
Deal found 5/16$790
Sat 6/157:20 pmOPO - ORD
1 stop26h 35mSWISS
Sat 6/223:50 pmORD - OPO
2 stops58h 05mSWISS
Deal found 5/16$874
Thu 5/237:20 pmOPO - ORD
2 stops22h 40mSWISS
Wed 6/52:20 pmORD - OPO
2 stops17h 25mSWISS
Deal found 5/15$884
Thu 6/612:35 pmOPO - ORD
2 stops16h 45mUnited Airlines
Thu 6/209:30 amORD - OPO
2 stops15h 25mUnited Airlines
Deal found 5/16$891
Thu 6/69:00 amOPO - ORD
2 stops15h 52mUnited Airlines
Thu 6/209:30 amORD - OPO
2 stops15h 25mUnited Airlines
Deal found 5/17$892

Porto to O'Hare Intl flights leaving soon

Find last-minute flight options from Porto to O'Hare Intl for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 17, 2024.
Consider one of these great deals we found on last-minute flights from Porto to Chicago. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Thu 5/2312:35 pmOPO - ORD
1 stop13h 35mUnited Airlines
Wed 6/59:30 amORD - OPO
2 stops15h 25mUnited Airlines
Deal found 5/15$733
Thu 5/237:20 pmOPO - ORD
2 stops22h 40mSWISS
Wed 6/52:20 pmORD - OPO
2 stops17h 25mSWISS
Deal found 5/15$884

One-way flights to O'Hare Intl from Porto

Search for one-way flight options from Porto to O'Hare Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 17, 2024.
Users traveling one-way from Porto to Chicago can select one of these great deals. Those seeking round-trip flights from Porto to Chicago should utilize the search form at the the top of the page.
Thu 10/318:35 amOPO - ORD
2 stops28h 58mMultiple Airlines
Deal found 5/16$278
Sat 6/151:50 pmOPO - ORD
3 stops49h 14mMultiple Airlines
Deal found 5/16$379
Sat 6/157:00 amOPO - ORD
2 stops56h 04mMultiple Airlines
Deal found 5/16$382
Tue 9/247:30 amOPO - ORD
1 stop31h 03mMultiple Airlines
Deal found 5/16$387
Sun 10/278:35 amOPO - ORD
2 stops29h 25mMultiple Airlines
Deal found 5/16$394
Tue 7/307:30 amOPO - ORD
2 stops21h 26mMultiple Airlines
Deal found 5/16$471
Sun 7/288:00 amOPO - ORD
2 stops32h 13mMultiple Airlines
Deal found 5/16$474
Sat 9/286:10 amOPO - ORD
1 stop13h 49mMultiple Airlines
Deal found 5/16$481
Sat 9/286:00 amOPO - ORD
3 stops41h 27mMultiple Airlines
Deal found 5/16$496

Find flights from Porto to O'Hare Intl within your budget

Customize your flight search to find flights from Porto to O'Hare Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 17, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$777 - $1,373

Route

Depart

Return

Price

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Thu 6/6

1 stop13h 35m

Chicago O'Hare Intl

Thu 6/20

1 stop11h 43m

$777

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Sat 6/15

1 stop22h 50m

Chicago O'Hare Intl

Sat 6/22

1 stop20h 20m

$790

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Sat 6/15

1 stop26h 35m

Chicago O'Hare Intl

Sat 6/22

2 stops58h 05m

$874

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Thu 7/11

1 stop22h 50m

Chicago O'Hare Intl

Sat 8/10

1 stop32h 40m

$1,046

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Thu 7/11

1 stop15h 15m

Chicago O'Hare Intl

Sat 8/10

2 stops15h 05m

$1,067

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Fri 8/9

1 stop13h 50m

Chicago O'Hare Intl

Sat 8/17

1 stop16h 15m

$1,087

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Sun 8/11

1 stop23h 20m

Chicago O'Hare Intl

Sun 8/18

1 stop10h 55m

$1,170

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Wed 8/7

1 stop20h 40m

Chicago O'Hare Intl

Tue 8/13

1 stop14h 35m

$1,248

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Wed 8/7

2 stops22h 05m

Chicago O'Hare Intl

Sat 8/17

1 stop13h 05m

$1,373

Flights are sorted by cheapest first

Deals found on 5/16

When is the cheapest time to fly from Porto to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Porto to O'Hare Intl. Price data was last updated on May 12, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Porto to Chicago O'Hare Intl Airport flight should consider departing on Saturday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to O'Hare Intl by month

Plan your trip from Porto to O'Hare Intl by taking into account the cheapest months to travel. The average price of a one-way flight from Porto to O'Hare Intl is currently $416 while a round-trip flight costs $1,048. Price data was last updated on May 12, 2024.

Currently, February is the cheapest month in which you can book a flight from Porto to Chicago O'Hare Intl Airport (average of $244). Flying from Porto to Chicago O'Hare Intl Airport in June is currently the most expensive (average of $342). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$248

February

$244

March

$280

April

$258

May

$278

June

$342

July

$327

August

$274

September

$258

October

$248

November

$270

December

$248

Temperature and rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature and rainfall totals by month.

CHI

Temperature

23 - 73.4 °F

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated May 17, 2024.
Peruse reviews from past customers who have flown with Turkish Airlines, KLM and Delta from Porto to Chicago to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,662 reviews
Check prices

Food

7.4

Overall

8.0

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.0
Very good
10,662 reviews
Delta
8.0
Very good
10,662 reviews
Check prices

Food

7.4

Overall

8.0

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

KLM
7.9
Good
1,568 reviews
Delta
8.0
Very good
10,662 reviews
Check prices

Food

7.4

Overall

8.0

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

SWISS
7.8
Good
1,994 reviews
Delta
8.0
Very good
10,662 reviews
Check prices

Food

7.4

Overall

8.0

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Austrian Airlines
7.7
Good
1,050 reviews
Delta
8.0
Very good
10,662 reviews
Check prices

Food

7.4

Overall

8.0

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Turkish Airlines
7.4
Good
3,707 reviews
Delta
8.0
Very good
10,662 reviews
Check prices

Food

7.4

Overall

8.0

Entertainment

8.0

Comfort

7.9

Boarding

8.2

Crew

8.6

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

Find useful and relevant information for your journey from Porto to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Porto to Chicago O'Hare Intl?

    If you book a flight to Chicago O'Hare Intl from Porto, you will be flying from Porto, which is the city’s only airport. Porto (OPO) is located 6.8 mi from the center of Porto. There are 0 flights from Porto to Chicago O'Hare Intl per day from 1 airline.

  • Can I find flights from Porto to Chicago O'Hare Intl Airport for under $800 on Cheapflights?

    Yes, there are multiple flights from Porto to Chicago O'Hare Intl Airport for under $800. The cheapest flight booked recently is on United Airlines for just $777, but on average you can expect to pay $1,014.

  • Are there last-minute flights available from Porto to Chicago O'Hare Intl Airport for under $800?

    There are currently 2+ open flights from Porto to Chicago O'Hare Intl Airport within the next 7 days for less than $800.

  • What are the cheapest airlines flying from Porto to Chicago O'Hare Intl Airport round-trip?

    Flying on United Airlines is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at $777. Additional round-trip tickets that might be worth considering are offered by SWISS and Turkish Airlines, with the lowest prices starting at $874 and $1,046, respectively. You may be able to fly from Porto to Chicago O'Hare Intl Airport for 14% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Porto to Chicago O'Hare Intl Airport one-way?

    To fly one-way, consider booking your trip with Turkish Airlines, which is currently one of the cheapest options available, starting at $558. TAP AIR PORTUGAL flights start at $591 while deals on Iberia start at $617 one-way.

  • What does OPO to ORD mean?

    OPO stands for Porto Airport, while ORD stands for Chicago O'Hare Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Porto to O'Hare Intl that include extra baggage allowance?

    The amount of baggage you can bring on your Porto to O'Hare Intl flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Porto to O'Hare Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter Porto to O'Hare Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Porto to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Porto to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Porto to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to O'Hare Intl.

  • Can I find deals for business class flights from Porto to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Porto to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Porto to O'Hare Intl that allow pets onboard?

    Many airlines flying from Porto to O'Hare Intl offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Porto to O'Hare Intl?

    Yes, you can often find last-minute deals on Porto to O'Hare Intl flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Porto to Chicago O'Hare Intl Airport flight deals updated?

    The Porto to Chicago O'Hare Intl Airport flight deals you see on this page were last updated on 5/17.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Porto to O'Hare Intl
See prices for flight routes from nearby airports that may be better suited for you.

Lisbon to O'Hare Intl flights
Faro to O'Hare Intl flights

Top airline flying from Porto to O'Hare Intl

Discover the top airline that operate flights from Porto to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 17, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$866Average$879FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Honolulu to Los Angeles flights
San Francisco to Salt Lake City flights
Chicago to Hyderabad flights
Dallas to Hyderabad flights
Atlanta to Houston flights
Sacramento to Seattle flights
Austin to New Orleans flights
Houston to Orlando flights
Dallas to Mumbai flights
Dallas to Baltimore flights
Minneapolis to Tampa flights
Porto to Paris Orly Airport flights

Search flights from Porto to O'Hare Intl by cabin class

Find flights from Porto to O'Hare Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Montes Claros
Flights to Girona Costa Brava
Flights to Naxos
Flights to Bourgas
Flights to Hyannis Barnstable
Flights to Samos
Flights to Reggio Calabria Tito Menniti
Flights to Devils Lake
Flights to Ningbo Lishe Intl
Flights to Pellston Emmet County
Flights to Provincetown
Flights to Cortez Montezuma County
Flights to Ohrid
Flights to Oran Es Senia
Flights to Menorca/Mahon
Flights to Hakodate
Flights to Ordu/Giresun
Flights to Laayoune Hassan I
Flights to Cornwall Newquay
Flights to Melilla
Flights to Rennes St Jacques
Flights to Parikia Paros
Flights to Constanţa Mihail Kogalniceanu
Flights to Miyakojima Hirara

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Porto to O'Hare Intl?

Cheapflights helps you search for flights from Porto to O'Hare Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Porto to O'Hare Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Porto to O'Hare Intl.

Can Cheapflights find flights from Porto to O'Hare Intl with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Porto to O'Hare Intl, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Porto to O'Hare Intl become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines