OPO - ORD

$369 Find Cheap Flights from Porto to Chicago - Compare and Save

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Everything you should know

Cheapest round-trip
$667
Typical prices: $830-$1,071
Scandinavian Airlines
Thu 11/22Wed 12/5
OPO - ORD • 1 stop
Cheapest one-way
$369
Typical prices: $612-$822
Multiple Airlines
Thu 1/25
OPO - ORD • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Porto and Chicago O'Hare Intl Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
January
Cheapest • 35% price drop
September
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Kastrup Copenhagen (CPH)
Cheapest • Avg $829 (round-trip)
Philadelphia (PHL)
Shortest trip • 11h 58m (one-way)
Insights
Insights
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We hope you love your trip to Chicago O'Hare Intl Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Porto to Chicago (OPO-ORD)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Porto to Chicago

Sun, Nov 22 - Sat, Dec 5
Scandinavian Airlines Logo
5:35 pm - 4:45 pmOPO  Porto-ORD Chicago O'Hare Intl
29h 10m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
7:10 pm - 12:05 pmORD  Chicago O'Hare Intl-OPO Porto
34h 55m1 stop Kastrup Copenhagen
$667Scandinavian Airlines
Sun, Nov 22 - Sat, Dec 5
Scandinavian Airlines Logo
5:35 pm - 4:45 pmOPO  Porto-ORD Chicago O'Hare Intl
29h 10m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
7:10 pm - 12:05 pmORD  Chicago O'Hare Intl-OPO Porto
34h 55m1 stop Kastrup Copenhagen
$676Scandinavian Airlines
Sat, Nov 21 - Fri, Dec 4
Multiple Airlines Logo
11:35 am - 3:30 pmOPO  Porto-ORD Chicago O'Hare Intl
33h 55m2 stops Madrid Barajas Lisbon Humberto Delgado
Multiple Airlines Logo
8:10 pm - 10:00 pmORD  Chicago O'Hare Intl-OPO Porto
19h 50m2 stops Lisbon Humberto Delgado Madrid Barajas
$679Multiple Airlines
Wed, Feb 17 - Sun, Feb 21
Scandinavian Airlines Logo
11:55 am - 4:45 pmOPO  Porto-ORD Chicago O'Hare Intl
34h 50m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
6:20 am - 11:05 amORD  Chicago O'Hare Intl-OPO Porto
22h 45m2 stops New York John F Kennedy Intl Kastrup Copenhagen
$698Scandinavian Airlines
Wed, Feb 17 - Sun, Feb 21
Scandinavian Airlines Logo
11:55 am - 4:45 pmOPO  Porto-ORD Chicago O'Hare Intl
34h 50m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
10:45 am - 11:05 amORD  Chicago O'Hare Intl-OPO Porto
18h 20m2 stops New York John F Kennedy Intl Kastrup Copenhagen
$700Scandinavian Airlines
Wed, Feb 17 - Sun, Feb 21
Scandinavian Airlines Logo
11:55 am - 4:45 pmOPO  Porto-ORD Chicago O'Hare Intl
34h 50m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
6:20 am - 11:05 amORD  Chicago O'Hare Intl-OPO Porto
22h 45m2 stops New York John F Kennedy Intl Kastrup Copenhagen
$704Scandinavian Airlines
Mon, Dec 21 - Mon, Jan 4
Scandinavian Airlines Logo
12:55 pm - 4:45 pmOPO  Porto-ORD Chicago O'Hare Intl
33h 50m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
7:10 pm - 10:40 amORD  Chicago O'Hare Intl-OPO Porto
33h 30m1 stop Kastrup Copenhagen
$752Scandinavian Airlines
Tue, Mar 2 - Tue, Mar 9
Multiple Airlines Logo
4:10 pm - 3:30 pmOPO  Porto-ORD Chicago O'Hare Intl
29h 20m2 stops Barcelona-El Prat Lisbon Humberto Delgado
Multiple Airlines Logo
6:50 pm - 6:30 pmORD  Chicago O'Hare Intl-OPO Porto
17h 40m1 stop Zurich
$763Multiple Airlines
Sat, Nov 21 - Fri, Dec 4
Multiple Airlines Logo
7:05 pm - 3:30 pmOPO  Porto-ORD Chicago O'Hare Intl
26h 25m2 stops Malaga Lisbon Humberto Delgado
Multiple Airlines Logo
8:10 pm - 3:00 pmORD  Chicago O'Hare Intl-OPO Porto
12h 50m1 stop Lisbon Humberto Delgado
$771Multiple Airlines
Sat, Nov 21 - Fri, Dec 4
Multiple Airlines Logo
6:30 am - 3:30 pmOPO  Porto-ORD Chicago O'Hare Intl
39h 00m2 stops Malaga Lisbon Humberto Delgado
Multiple Airlines Logo
8:10 pm - 3:00 pmORD  Chicago O'Hare Intl-OPO Porto
12h 50m1 stop Lisbon Humberto Delgado
$772Multiple Airlines
Booking Insights

Price, demand and travel trends for Porto to Chicago O'Hare Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Porto to Chicago O'Hare Intl Airport?

Round-trip flights from Porto to Chicago O'Hare Intl Airport typically range from $830 to $1,071. The lowest price found in the past 5 days was $667, on Scandinavian Airlines.

What's the cheapest day of the week to fly from Porto to Chicago O'Hare Intl Airport?

Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from Porto to Chicago O'Hare Intl Airport. It’s 9% cheaper than the average day, while Sunday is the most expensive, with prices 36% higher.

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

•January is the cheapest month to fly from Porto to Chicago O'Hare Intl Airport at $590 round-trip.
•March ($1,243) and July ($1,151) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 110% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for Porto to Chicago O'Hare Intl Airport flights

Low season

June

Cheapest flight

$369
Beat the crowds with an average 60% drop in travelers.
The most popular month to fly with an average 64% increase in travelers.
One-way flight from Porto to Chicago O'Hare Intl Airport

When to book flights from Porto to Chicago

Are your dates flexible? Find out the best times to travel from Porto to Chicago based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Porto to Chicago O'Hare Intl Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Porto to Chicago O'Hare Intl Airport?

    Three cabin classes are available on flights from Porto to Chicago O'Hare Intl Airport:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • How long is a flight from Porto to Chicago O'Hare Intl Airport?

    A nonstop flight from Porto to Chicago O'Hare Intl Airport takes 00m, covering 3,931 miles.

  • Do I need a passport to fly from Porto to Chicago O'Hare Intl Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Porto to Chicago O'Hare Intl Airport flight?

    Round-trip flights from Porto to Chicago O'Hare Intl Airport range from $830 to $1,071, with an average of $913 over the past 12 months. Anything below $830 counts as a good deal.

  • How are flight prices from Porto to Chicago O'Hare Intl Airport looking right now?

    One-way fares from Porto to Chicago O'Hare Intl Airport are currently lower than usual. Average one-way flight prices are about $401, which is 44% below the typical average for this route.

  • What car rental options are available at Chicago O'Hare Intl Airport (ORD)?

    Chicago O'Hare Intl Airport (ORD) hosts 5 major car rental companies, with daily rates averaging $63 for economy cars. Top options include:

    • Routes Car & Truck Rentals
    • Europcar
    • Hertz
    • Ace
    • Dollar

  • Which airports can I use when flying from Porto to Chicago O'Hare Intl Airport?

    Flights from Porto to Chicago O'Hare Intl Airport usually depart from Porto (OPO) and arrive at Chicago O'Hare Intl (ORD).

  • Which airports do connecting flights from Porto to Chicago O'Hare Intl Airport pass through?

    One-stop flights from Porto to Chicago O'Hare Intl Airport most commonly connect through:

    • Lisbon Humberto Delgado (LIS) - 29% of one-stop connections
    • Amsterdam Schiphol (AMS) - 21% of one-stop connections
    • Newark (EWR) - 13% of one-stop connections
    • Frankfurt am Main (FRA) - 10% of one-stop connections

  • Can I save money by using flexible dates for flights from Porto to Chicago O'Hare Intl Airport?

    Yes. Flexible dates can save you up to 33% on flights from Porto to Chicago O'Hare Intl Airport. Monday is the cheapest departure day at $833 round-trip on average, while Sunday is the most expensive at $1,243, a difference of $410.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Porto to Chicago O'Hare Intl Airport?

    Flying via Philadelphia (PHL) gives the shortest average 1-stop total travel time at 11h 58m, compared with 12h 10m via Montreal Pierre Elliott Trudeau Intl (YUL) and 12h 22m via Madrid Barajas (MAD).

  • What is the time difference between Porto and Chicago O'Hare Intl Airport?

    Chicago O'Hare Intl Airport is 6 hours behind Porto (Central Time vs Western European Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Chicago O'Hare Intl Airport?

    Some of the most popular sights in Chicago O'Hare Intl Airport are Magnificent Mile, Grant Park and Soldier Field. These are among the most viewed places in Chicago O'Hare Intl Airport on KAYAK.

Your guide to booking Porto to Chicago O'Hare Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Sunday. On this route, Monday flights average $833, about $410 less than Sunday fares (33% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Porto to Chicago O'Hare Intl Airport trip for January. Fares historically average $590 round-trip in that month - typically $653 less than the most expensive month, which is March (based on the last 12 months).

More options for your flight from Porto to Chicago

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