Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Porto to Chicago from $486

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to Chicago departing on 4/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Porto to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
6:00 pm - 3:25 pm
OPO
-
ORD
27h 25m1 stop
TAP AIR PORTUGAL Logo
7:10 pm - 10:00 pm
ORD
-
OPO
20h 50m1 stop
$581TAP AIR PORTUGAL
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
1:00 pm - 4:45 pm
OPO
-
ORD
33h 45m2 stops
Multiple Airlines Logo
7:20 pm - 9:15 pm
ORD
-
OPO
19h 55m2 stops
$609Multiple Airlines
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
1:00 pm - 4:45 pm
OPO
-
ORD
33h 45m2 stops
Multiple Airlines Logo
7:20 pm - 9:15 pm
ORD
-
OPO
19h 55m2 stops
$612Multiple Airlines
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
12:05 pm - 4:45 pm
OPO
-
ORD
34h 40m3 stops
Multiple Airlines Logo
7:20 pm - 9:15 pm
ORD
-
OPO
19h 55m2 stops
$625Multiple Airlines
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
1:00 pm - 4:45 pm
OPO
-
ORD
33h 45m2 stops
Multiple Airlines Logo
7:20 pm - 9:15 pm
ORD
-
OPO
19h 55m2 stops
$627Multiple Airlines
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
6:35 am - 10:42 pm
OPO
-
ORD
46h 07m3 stops
Multiple Airlines Logo
6:30 pm - 10:30 pm
ORD
-
OPO
22h 00m3 stops
$666Multiple Airlines
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
11:35 am - 8:18 am
OPO
-
ORD
26h 43m2 stops
Multiple Airlines Logo
6:30 pm - 10:45 pm
ORD
-
OPO
22h 15m3 stops
$689Multiple Airlines
Mon, Jan 12 - Sun, Jan 25
Multiple Airlines Logo
9:55 pm - 10:42 pm
OPO
-
ORD
30h 47m3 stops
Multiple Airlines Logo
6:30 pm - 10:30 pm
ORD
-
OPO
22h 00m3 stops
$694Multiple Airlines
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
5:10 pm - 2:45 pm
OPO
-
ORD
27h 35m2 stops
Multiple Airlines Logo
4:38 pm - 2:55 pm
ORD
-
OPO
16h 17m2 stops
$701Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
5:10 pm - 2:45 pm
OPO
-
ORD
27h 35m2 stops
Multiple Airlines Logo
6:30 pm - 8:10 am
ORD
-
OPO
31h 40m3 stops
$704Multiple Airlines
Sat, Jan 31 - Sat, Feb 7

TAP AIR PORTUGAL flights from Porto to Chicago O'Hare Intl Airport

Our best TAP AIR PORTUGAL deals on Porto to Chicago O'Hare Intl Airport flight tickets
TAP AIR PORTUGAL
Jan 15
OPO8:00 pmPorto
25h 25m
1 stop
ORD3:25 pmChicago O'Hare Intl
Jan 28
ORD7:10 pmChicago O'Hare Intl
16h 50m
1 stop
OPO6:00 pmPorto
$581
Find similar
TAP AIR PORTUGAL
Dec 26
OPO9:00 amPorto
12h 25m
1 stop
ORD3:25 pmChicago O'Hare Intl
Jan 21
ORD7:10 pmChicago O'Hare Intl
16h 50m
1 stop
OPO6:00 pmPorto
$726
Find similar
TAP AIR PORTUGAL
Dec 24
OPO8:55 amPorto
12h 05m
1 stop
ORD3:00 pmChicago O'Hare Intl
Jan 18
ORD8:25 pmChicago O'Hare Intl
10h 35m
1 stop
OPO1:00 pmPorto
$782
Find similar

British Airways flights from Porto to Chicago O'Hare Intl Airport

Our best British Airways deals on Porto to Chicago O'Hare Intl Airport flight tickets
British Airways
Jan 15
OPO8:20 amPorto
17h 55m
2 stops
ORD8:15 pmChicago O'Hare Intl
Jan 28
ORD6:45 pmChicago O'Hare Intl
16h 00m
1 stop
OPO4:45 pmPorto
$812
Find similar
British Airways
Dec 24
OPO8:20 amPorto
12h 35m
1 stop
ORD2:55 pmChicago O'Hare Intl
Jan 21
ORD8:45 pmChicago O'Hare Intl
14h 00m
1 stop
OPO4:45 pmPorto
$1,536
Find similar
British Airways
Dec 23
OPO12:25 pmPorto
32h 30m
1 stop
ORD2:55 pmChicago O'Hare Intl
Jan 18
ORD8:45 pmChicago O'Hare Intl
13h 55m
1 stop
OPO4:40 pmPorto
$1,546
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Porto to Chicago O'Hare Intl Airport 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, momondo users made 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Porto to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 1/15

6:00 pm-3:25 pm

1 stop27h 25m

Chicago O'Hare Intl

Wed 1/28

7:10 pm-10:00 pm

1 stop20h 50m

$581

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 1/15

1:00 pm-4:45 pm

2 stops33h 45m

Chicago O'Hare Intl

Wed 1/28

7:20 pm-9:15 pm

2 stops19h 55m

$609

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 1/15

1:00 pm-4:45 pm

2 stops33h 45m

Chicago O'Hare Intl

Wed 1/28

7:20 pm-9:15 pm

2 stops19h 55m

$612

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 1/15

12:05 pm-4:45 pm

3 stops34h 40m

Chicago O'Hare Intl

Wed 1/28

7:20 pm-9:15 pm

2 stops19h 55m

$625

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 1/15

1:00 pm-4:45 pm

2 stops33h 45m

Chicago O'Hare Intl

Wed 1/28

7:20 pm-9:15 pm

2 stops19h 55m

$627

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 1/15

6:35 am-10:42 pm

3 stops46h 07m

Chicago O'Hare Intl

Wed 1/28

6:30 pm-10:30 pm

3 stops22h 00m

$666

PortoChicago

OPO - ORD

OPOORD

Porto

Mon 1/12

11:35 am-8:18 am

2 stops26h 43m

Chicago O'Hare Intl

Sun 1/25

6:30 pm-10:45 pm

3 stops22h 15m

$689

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 1/15

9:55 pm-10:42 pm

3 stops30h 47m

Chicago O'Hare Intl

Wed 1/28

6:30 pm-10:30 pm

3 stops22h 00m

$694

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 1/31

5:10 pm-2:45 pm

2 stops27h 35m

Chicago O'Hare Intl

Sat 2/7

4:38 pm-2:55 pm

2 stops16h 17m

$701

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 1/31

5:10 pm-2:45 pm

2 stops27h 35m

Chicago O'Hare Intl

Sat 2/7

6:30 pm-8:10 am

3 stops31h 40m

$704

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

See travel insights to Chicago from

How to get the cheapest flight ticket from Porto to Chicago O'Hare Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Saturday when prices can be found for as low as $758. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from Porto because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $879.

When to book flights from Porto to Chicago O'Hare Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Porto to Chicago O'Hare Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Porto to Chicago O'Hare Intl Airport (OPO to ORD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Porto to Chicago O'Hare Intl Airport

Fastest flight time

12h 25m

Direct flights

None
The fastest flight from Porto to Chicago O'Hare Intl Airport takes 12h 25m
There are no direct flights from Porto to Chicago O'Hare Intl Airport. There are no popular flight routes from Porto to Chicago O'Hare Intl Airport.
Search flight deals

  • How far is Porto to Chicago O'Hare Intl by plane?

    Porto and Chicago O'Hare Intl are 3936.9 mi apart from one another. 12h 25m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Porto Airport to Chicago O'Hare Intl Airport?

    Prices for flights from Porto Airport to Chicago O'Hare Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Porto Airport to Chicago O'Hare Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Porto Airport to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The necessary travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
Schaumburg
South Haven
Rockford
Merrillville
Gurnee
Naperville
Rosemont
Kenosha
New Buffalo
Joliet
Oak Brook
Orland Park
Racine
Hammond
Janesville
Tinley Park
Aurora
Elgin
Benton Harbor

Why use momondo?

Why should I use momondo to find a flight deal from Porto to Chicago?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Chicago from Porto.

Can I find flights from Porto to Chicago with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Chicago from Porto with this policy.

How can momondo help me find flights from Porto to Chicago?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Porto to Chicago.

I’m not ready to book a flight from Porto to Chicago right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Porto to Chicago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chicago and let you know when they change.

An easier way to manage your Chicago O'Hare Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/17
Sat 1/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Chicago