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Cheap flights from Porto (OPO) to Chicago (CHI) from $401

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 5/31. 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 — CHI
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
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Cheap flight deals from Porto to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Chicago (CHI). 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 16, 2024.

Popular in

July

Cheapest in

September

Average price

$801

Round-trip from

$223
High demand for flights, 30% potential price rise
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Best time to find cheap flights, 23% potential price drop
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Average for round-trip flights in May 2024
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From Porto to Chicago (CHI)
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What is the cheapest day to fly round-trip from Porto to Chicago?

Departing on a Friday is a good option for securing a great price. You can expect to save up to 7% when planning your travel around this day of the week.

What is the cheapest month to fly from Porto to Chicago?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, September can be a great choice for travel to Chicago. Flights to Chicago from Porto in September are about $844 on average during September, but can be found for as low as $645.

When is the cheapest time to fly from Porto to Chicago (OPO - CHI)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Porto to Chicago as you normally would.

Cheap United Airlines flights from Porto to Chicago

Explore cheap flight options specifically provided by United Airlines for the route between Porto and Chicago. 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 16, 2024.
Check out some of the cheapest United Airlines flights we've come across from Porto to Chicago. Be sure to come back soon if the deals available don't appeal to you at this time.
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 5/15$766
Thu 6/69:00 amOPO - ORD
2 stops15h 52mUnited Airlines
Thu 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/15$774

Cheap SWISS flights from Porto to Chicago

Explore cheap flight options specifically provided by SWISS for the route between Porto and Chicago. 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 16, 2024.
To aid your search, here are some of the cheapest SWISS flights we've found from Porto to Chicago. Deals frequently update to provide users with more options.
Thu 6/67:20 pmOPO - ORD
2 stops22h 40mSWISS
Thu 6/207:15 pmORD - OPO
2 stops36h 30mSWISS
Deal found 5/15$870
Thu 5/237:20 pmOPO - ORD
2 stops22h 40mSWISS
Wed 6/52:20 pmORD - OPO
2 stops17h 25mSWISS
Deal found 5/15$884

Cheap Porto to Chicago flights in May & June 2024

Find cheap flight options from Porto to Chicago 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 16, 2024.
These are some of the most attractive deals on flights from Porto to Chicago in 2024. Check back soon for alternative fares.
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 5/15$766
Thu 6/69:00 amOPO - ORD
2 stops15h 52mUnited Airlines
Thu 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/15$774
Thu 6/67:20 pmOPO - ORD
2 stops22h 40mSWISS
Thu 6/207:15 pmORD - OPO
2 stops36h 30mSWISS
Deal found 5/15$870
Thu 5/237:20 pmOPO - ORD
2 stops22h 40mSWISS
Wed 6/52:20 pmORD - OPO
2 stops17h 25mSWISS
Deal found 5/15$884

Porto to Chicago 2024 flight deals

Discover exclusive flight deals for travel between Porto and Chicago 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 16, 2024.
These are some of the most attractive deals on flights from Porto to Chicago in 2024. Check back soon for alternative fares.
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 5/15$766
Thu 6/69:00 amOPO - ORD
2 stops15h 52mUnited Airlines
Thu 6/201:12 pmORD - OPO
1 stop11h 43mUnited Airlines
Deal found 5/15$774
Thu 6/67:20 pmOPO - ORD
2 stops22h 40mSWISS
Thu 6/207:15 pmORD - OPO
2 stops36h 30mSWISS
Deal found 5/15$870
Thu 5/237:20 pmOPO - ORD
2 stops22h 40mSWISS
Wed 6/52:20 pmORD - OPO
2 stops17h 25mSWISS
Deal found 5/15$884
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 7/115:00 amOPO - ORD
1 stop15h 15mKLM
Sat 8/101:35 pmORD - OPO
2 stops15h 05mKLM
Deal found 5/16$1,067
Thu 7/119:15 amOPO - ORD
2 stops18h 24mDelta
Sat 8/105:30 pmORD - OPO
2 stops16h 00mDelta
Deal found 5/16$1,097
Thu 7/114:25 pmOPO - ORD
3 stops47h 26mMultiple Airlines
Sat 8/104:05 pmORD - OPO
2 stops37h 15mMultiple Airlines
Deal found 5/16$16,778

Porto to Chicago flights leaving soon

Find last-minute flight options from Porto to Chicago 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 16, 2024.
Check out these flights departing soon from Porto to Chicago. Users should examine the flight details to ensure there are no surprises.
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 Chicago from Porto

Search for one-way flight options from Porto to Chicago. 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 16, 2024.
Users traveling one-way from Porto to Chicago can select one of these great deals. For those needing a return trip from Porto, there is a search form available above.
Fri 5/317:40 pmOPO - ORD
2 stops43h 15mMultiple Airlines
Deal found 5/15$401
Mon 11/412:40 pmOPO - ORD
2 stops25h 53mMultiple Airlines
Deal found 5/15$433
Fri 5/318:45 amOPO - ORD
3 stops37h 50mMultiple Airlines
Deal found 5/15$445
Thu 10/247:00 amOPO - ORD
2 stops19h 43mMultiple Airlines
Deal found 5/15$493
Sat 9/216:10 amOPO - ORD
1 stop13h 49mMultiple Airlines
Deal found 5/15$500
Wed 11/66:30 amOPO - ORD
2 stops16h 50mMultiple Airlines
Deal found 5/15$524
Thu 10/241:30 pmOPO - ORD
1 stop13h 13mMultiple Airlines
Deal found 5/15$537
Mon 5/2710:30 pmOPO - ORD
3 stops32h 38mMultiple Airlines
Deal found 5/15$548
Mon 11/44:25 pmOPO - ORD
1 stop33h 00mTurkish Airlines
Deal found 5/15$557

Find flights from Porto to Chicago within your budget

Customize your flight search to find flights from Porto to Chicago 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 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$766 - $16,778

Route

Depart

Return

Price

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Thu 6/6

1 stop15h 00m

Chicago O'Hare Intl

Thu 6/20

1 stop11h 43m

$766

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Thu 6/6

2 stops15h 52m

Chicago O'Hare Intl

Thu 6/20

1 stop11h 43m

$774

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Thu 6/6

2 stops22h 40m

Chicago O'Hare Intl

Thu 6/20

2 stops36h 30m

$870

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

Thu 7/11

2 stops18h 24m

Chicago O'Hare Intl

Sat 8/10

2 stops16h 00m

$1,097

PortoChicago O'Hare Intl

OPO - ORD

OPOORD

Porto

Thu 7/11

3 stops47h 26m

Chicago O'Hare Intl

Sat 8/10

2 stops37h 15m

$16,778

Flights are sorted by cheapest first

Deals found on 5/15

When is the cheapest time to fly from Porto to Chicago?

Use this chart to determine the cheapest time to fly round-trip from Porto to Chicago. 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 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.
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Average price of flights to Chicago by month

Plan your trip from Porto to Chicago by taking into account the cheapest months to travel. The average price of a one-way flight from Porto to Chicago is currently $493 while a round-trip flight costs $3,200. 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 (average of $244). Flying from Porto to Chicago 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 Chicago by month

Plan your trip to Chicago by taking into account the average temperature and rainfall totals by month.

CHI

Temperature

23 - 73.4 °F

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated May 16, 2024.
Get a feel of what it's like to fly with United Airlines and SWISS from Porto to Chicago by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,673 reviews
Check prices

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Entertainment

8.0

Overall

8.0

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
10,673 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Entertainment

8.0

Overall

8.0

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
10,673 reviews
Check prices

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Entertainment

8.0

Overall

8.0

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
10,673 reviews
Check prices

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Entertainment

8.0

Overall

8.0

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
1,053 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Entertainment

8.0

Overall

8.0

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
10,673 reviews
Check prices

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Entertainment

8.0

Overall

8.0

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 Chicago. 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?

    Located just 6.8 mi from the city center, Porto is the airport most travelers will use when flying to Chicago from Porto. Booking flights from Porto (OPO) to Chicago should be relatively easy as there are 0 daily outbound flights to Chicago from 1 airline.

  • Can I find flights from Porto to Chicago for under $800 on Cheapflights?

    Yes, there are multiple flights from Porto to Chicago for under $800. The cheapest flight booked recently is on United Airlines for just $766, but on average you can expect to pay $3,199.

  • Are there last-minute flights available from Porto to Chicago for under $800?

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

  • What are the cheapest airlines flying from Porto to Chicago round-trip?

    Currently priced at $766, United Airlines will fly you from Porto to Chicago and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from SWISS and Turkish Airlines - these airlines can fly you to your destination from $870 and $1,046, respectively. These flights start at 9% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Porto to Chicago one-way?

    For one-way options, check prices for Turkish Airlines. According to our data, you can fly for as low as $557. Users have also found prices from $568 and $583 on TAP AIR PORTUGAL and Air Europa, respectively.

  • 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. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Chicago Midway Airport (MDW), Chicago Greater Rockford Airport (RFD).

  • Can I find deals for flights from Porto to Chicago that include extra baggage allowance?

    The amount of baggage you can bring on your Porto to Chicago 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 Chicago with specific airlines?

    Yes, Cheapflights allows you to browse and filter Porto to Chicago 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 Chicago that include hotel bookings?

    Yes. In addition to deals on Porto to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Porto to Chicago?

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

  • Can I find deals for business class flights from Porto to Chicago?

    Yes. Cheapflights offers flight deals from Porto to Chicago 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 Chicago that allow pets onboard?

    Many airlines flying from Porto to Chicago 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 Chicago?

    Yes, you can often find last-minute deals on Porto to Chicago 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 flight deals updated?

    The Porto to Chicago flight deals you see on this page were last updated on 5/16.

See more FAQs

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Alternative routes for Porto to Chicago
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
Porto to O'Hare Intl flights
Lisbon to St. Louis flights
Porto to St. Louis flights

Top airline flying from Porto to Chicago

Discover the top airline that operate flights from Porto to Chicago. 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 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$866Average$879FlexibilityNo cancel feeOn-time69%
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Search flights from Porto to Chicago by cabin class

Find flights from Porto to Chicago, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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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 Chicago?

When you search for this flight from Porto to Chicago, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Porto to Chicago?

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 Chicago.

Can Cheapflights find flights from Porto to Chicago with no change fees?

Certainly. Search results for flights to Chicago from Porto shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Porto to Chicago become cheaper?

Of course! You can now track prices for flights from Porto to Chicago and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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