Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Porto to Chicago from $302

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 1/25. 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.
Scandinavian Airlines Logo
5:35 pm - 4:45 pmOPO-ORD
29h 10m1 stop
Scandinavian Airlines Logo
7:20 pm - 4:45 pmORD-OPO
15h 25m1 stop
$459Scandinavian Airlines
Find Deal
sex, nov 21 - dom, dez 7
Scandinavian Airlines Logo
5:35 pm - 4:45 pmOPO-ORD
29h 10m1 stop
Scandinavian Airlines Logo
7:20 pm - 4:45 pmORD-OPO
15h 25m1 stop
$526Scandinavian Airlines
Find Deal
sex, nov 21 - dom, dez 7
Scandinavian Airlines Logo
5:35 pm - 4:45 pmOPO-ORD
29h 10m1 stop
Scandinavian Airlines Logo
7:20 pm - 4:45 pmORD-OPO
15h 25m1 stop
$529Scandinavian Airlines
Find Deal
sex, nov 21 - dom, dez 7
TAP AIR PORTUGAL Logo
9:00 am - 3:25 pmOPO-ORD
12h 25m1 stop
TAP AIR PORTUGAL Logo
8:25 pm - 8:00 amORD-OPO
29h 35m1 stop
$606TAP AIR PORTUGAL
Find Deal
sex, nov 21 - dom, dez 7
Multiple Airlines Logo
9:55 pm - 8:00 pmOPO-ORD
28h 05m3 stops
Multiple Airlines Logo
3:55 pm - 10:20 pmORD-OPO
24h 25m3 stops
$711Multiple Airlines
Find Deal
qui, nov 13 - seg, nov 17
Multiple Airlines Logo
8:00 pm - 5:55 pmOPO-ORD
27h 55m2 stops
Multiple Airlines Logo
7:40 pm - 8:30 pmORD-OPO
18h 50m1 stop
$717Multiple Airlines
Find Deal
qui, nov 13 - seg, nov 17
Lufthansa Logo
6:00 am - 12:55 pmOPO-ORD
12h 55m1 stop
Lufthansa Logo
5:55 pm - 11:25 pmORD-OPO
23h 30m1 stop
$768Lufthansa
Find Deal
qua, abr 1 - dom, abr 5
Lufthansa Logo
6:00 am - 7:55 pmOPO-ORD
19h 55m1 stop
Lufthansa Logo
9:40 pm - 11:25 pmORD-OPO
19h 45m1 stop
$769Lufthansa
Find Deal
qua, abr 1 - dom, abr 5
Delta Logo
6:30 am - 2:20 pmOPO-ORD
13h 50m1 stop
Delta Logo
11:03 am - 10:30 amORD-OPO
17h 27m2 stops
$771Delta
Find Deal
seg, nov 24 - seg, dez 1
Delta Logo
6:30 am - 2:20 pmOPO-ORD
13h 50m1 stop
Delta Logo
5:20 pm - 10:30 amORD-OPO
11h 10m1 stop
$772Delta
Find Deal
seg, nov 24 - seg, dez 1

Scandinavian Airlines flights from Porto to Chicago O'Hare Intl Airport

Our best Scandinavian Airlines deals on Porto to Chicago O'Hare Intl Airport flight tickets
Scandinavian Airlines
Nov 21
OPO5:35 pmPorto
29h 10m
1 stop
ORD4:45 pmChicago O'Hare Intl
Dec 7
ORD7:20 pmChicago O'Hare Intl
15h 25m
1 stop
OPO4:45 pmPorto
$459
Find similar
Scandinavian Airlines
Nov 21
OPO5:35 pmPorto
29h 10m
1 stop
ORD4:45 pmChicago O'Hare Intl
Dec 7
ORD7:20 pmChicago O'Hare Intl
15h 25m
1 stop
OPO4:45 pmPorto
$526
Find similar
Scandinavian Airlines
Nov 21
OPO5:35 pmPorto
29h 10m
1 stop
ORD4:45 pmChicago O'Hare Intl
Dec 7
ORD7:20 pmChicago O'Hare Intl
15h 25m
1 stop
OPO4:45 pmPorto
$529
Find similar

Lufthansa flights from Porto to Chicago O'Hare Intl Airport

Our best Lufthansa deals on Porto to Chicago O'Hare Intl Airport flight tickets
Lufthansa
Apr 1
OPO6:00 amPorto
12h 55m
1 stop
ORD12:55 pmChicago O'Hare Intl
Apr 5
ORD5:55 pmChicago O'Hare Intl
23h 30m
1 stop
OPO11:25 pmPorto
$768
Find similar
Lufthansa
Apr 1
OPO6:00 amPorto
19h 55m
1 stop
ORD7:55 pmChicago O'Hare Intl
Apr 5
ORD9:40 pmChicago O'Hare Intl
19h 45m
1 stop
OPO11:25 pmPorto
$769
Find similar
Lufthansa
Mar 27
OPO6:00 amPorto
13h 10m
1 stop
ORD2:10 pmChicago O'Hare Intl
Apr 7
ORD9:40 pmChicago O'Hare Intl
19h 45m
1 stop
OPO11:25 pmPorto
$786
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 novembro 3, 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

sex 11/21

5:35 pm-4:45 pm

1 stop29h 10m

Chicago O'Hare Intl

dom 12/7

7:20 pm-4:45 pm

1 stop15h 25m

$459

PortoChicago

OPO - ORD

OPOORD

Porto

sex 11/21

5:35 pm-4:45 pm

1 stop29h 10m

Chicago O'Hare Intl

dom 12/7

7:20 pm-4:45 pm

1 stop15h 25m

$526

PortoChicago

OPO - ORD

OPOORD

Porto

sex 11/21

5:35 pm-4:45 pm

1 stop29h 10m

Chicago O'Hare Intl

dom 12/7

7:20 pm-4:45 pm

1 stop15h 25m

$529

PortoChicago

OPO - ORD

OPOORD

Porto

sex 11/21

9:00 am-3:25 pm

1 stop12h 25m

Chicago O'Hare Intl

dom 12/7

8:25 pm-8:00 am

1 stop29h 35m

$606

PortoChicago

OPO - ORD

OPOORD

Porto

qui 11/13

9:55 pm-8:00 pm

3 stops28h 05m

Chicago O'Hare Intl

seg 11/17

3:55 pm-10:20 pm

3 stops24h 25m

$711

PortoChicago

OPO - ORD

OPOORD

Porto

qui 11/13

8:00 pm-5:55 pm

2 stops27h 55m

Chicago O'Hare Intl

seg 11/17

7:40 pm-8:30 pm

1 stop18h 50m

$717

PortoChicago

OPO - ORD

OPOORD

Porto

qua 4/1

6:00 am-12:55 pm

1 stop12h 55m

Chicago O'Hare Intl

dom 4/5

5:55 pm-11:25 pm

1 stop23h 30m

$768

PortoChicago

OPO - ORD

OPOORD

Porto

qua 4/1

6:00 am-7:55 pm

1 stop19h 55m

Chicago O'Hare Intl

dom 4/5

9:40 pm-11:25 pm

1 stop19h 45m

$769

PortoChicago

OPO - ORD

OPOORD

Porto

seg 11/24

6:30 am-2:20 pm

1 stop13h 50m

Chicago O'Hare Intl

seg 12/1

11:03 am-10:30 am

2 stops17h 27m

$771

PortoChicago

OPO - ORD

OPOORD

Porto

seg 11/24

6:30 am-2:20 pm

1 stop13h 50m

Chicago O'Hare Intl

seg 12/1

5:20 pm-10:30 am

1 stop11h 10m

$772

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

Direct flights

None
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
South Haven
Schaumburg
Rockford
Merrillville
Gurnee
Naperville
Rosemont
Kenosha
New Buffalo
Joliet
Oak Brook
Orland Park
Racine
Hammond
Tinley Park
Janesville
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
qua 12/3
qua 12/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Chicago