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Cheap flights from Porto to Chicago from $357

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 4/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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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
10:30 pm - 4:00 pm
OPO
-
ORD
23h 30m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 7:00 pm
ORD
-
OPO
18h 55m
1 stop
$629TAP AIR PORTUGAL
Thu, Apr 16 - Sat, May 2
TAP AIR PORTUGAL Logo
10:30 pm - 4:00 pm
OPO
-
ORD
23h 30m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 3:00 pm
ORD
-
OPO
14h 55m
1 stop
$637TAP AIR PORTUGAL
Thu, Apr 16 - Sat, May 2
TAP AIR PORTUGAL Logo
10:30 pm - 4:00 pm
OPO
-
ORD
23h 30m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 7:00 pm
ORD
-
OPO
18h 55m
1 stop
$638TAP AIR PORTUGAL
Thu, Apr 16 - Sat, May 2
TAP AIR PORTUGAL Logo
10:30 pm - 4:00 pm
OPO
-
ORD
23h 30m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 11:15 pm
ORD
-
OPO
23h 10m
1 stop
$640TAP AIR PORTUGAL
Thu, Apr 16 - Sat, May 2
TAP AIR PORTUGAL Logo
6:00 pm - 4:00 pm
OPO
-
ORD
28h 00m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 12:40 am
ORD
-
OPO
24h 35m
1 stop
$641TAP AIR PORTUGAL
Thu, Apr 16 - Sat, May 2
TAP AIR PORTUGAL Logo
10:30 pm - 4:00 pm
OPO
-
ORD
23h 30m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 11:15 pm
ORD
-
OPO
23h 10m
1 stop
$642TAP AIR PORTUGAL
Thu, Apr 16 - Sat, May 2
Multiple Airlines Logo
10:00 pm - 2:15 pm
OPO
-
ORD
22h 15m
2 stops
Multiple Airlines Logo
4:20 pm - 9:40 pm
ORD
-
OPO
23h 20m
2 stops
$748Multiple Airlines
Thu, Apr 23 - Fri, May 1
Turkish Airlines Logo
11:00 am - 9:40 am
OPO
-
ORD
28h 40m
1 stop
Turkish Airlines Logo
11:25 am - 10:00 am
ORD
-
OPO
16h 35m
1 stop
$756Turkish Airlines
Thu, Apr 16 - Wed, Apr 29
Multiple Airlines Logo
10:00 pm - 6:15 pm
OPO
-
ORD
26h 15m
3 stops
Multiple Airlines Logo
10:25 pm - 8:00 am
ORD
-
OPO
27h 35m
3 stops
$798Multiple Airlines
Wed, May 6 - Sun, May 10
Multiple Airlines Logo
10:00 pm - 6:15 pm
OPO
-
ORD
26h 15m
3 stops
Multiple Airlines Logo
10:25 pm - 11:40 pm
ORD
-
OPO
19h 15m
2 stops
$800Multiple Airlines
Wed, May 6 - Sun, May 10

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
Apr 16
OPO10:30 pmPorto
23h 30m
1 stop
ORD4:00 pmChicago O'Hare Intl
May 2
ORD6:05 pmChicago O'Hare Intl
18h 55m
1 stop
OPO7:00 pmPorto
$629
TAP AIR PORTUGAL
Apr 16
OPO10:30 pmPorto
23h 30m
1 stop
ORD4:00 pmChicago O'Hare Intl
May 2
ORD6:05 pmChicago O'Hare Intl
14h 55m
1 stop
OPO3:00 pmPorto
$637
TAP AIR PORTUGAL
Apr 16
OPO10:30 pmPorto
23h 30m
1 stop
ORD4:00 pmChicago O'Hare Intl
May 2
ORD6:05 pmChicago O'Hare Intl
18h 55m
1 stop
OPO7:00 pmPorto
$638

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

Our best Turkish Airlines deals on Porto to Chicago O'Hare Intl Airport flight tickets
Turkish Airlines
Apr 16
OPO11:00 amPorto
28h 40m
1 stop
ORD9:40 amChicago O'Hare Intl
Apr 29
ORD11:25 amChicago O'Hare Intl
16h 35m
1 stop
OPO10:00 amPorto
$756
Turkish Airlines
Apr 16
OPO4:40 pmPorto
23h 00m
1 stop
ORD9:40 amChicago O'Hare Intl
Apr 29
ORD11:25 amChicago O'Hare Intl
16h 35m
1 stop
OPO10:00 amPorto
$806
Turkish Airlines
Apr 22
OPO4:40 pmPorto
23h 00m
1 stop
ORD9:40 amChicago O'Hare Intl
Apr 29
ORD11:25 amChicago O'Hare Intl
16h 35m
1 stop
OPO10:00 amPorto
$818

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 March 28, 2026.
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

Cheapest round-trip

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/16

10:30 pm-4:00 pm

1 stop23h 30m

Chicago O'Hare Intl

Sat 5/2

6:05 pm-7:00 pm

1 stop18h 55m

$629
Quickest round-trip

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/16

10:30 pm-4:00 pm

1 stop23h 30m

Chicago O'Hare Intl

Sat 5/2

6:05 pm-3:00 pm

1 stop14h 55m

$637

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/16

10:30 pm-4:00 pm

1 stop23h 30m

Chicago O'Hare Intl

Sat 5/2

6:05 pm-7:00 pm

1 stop18h 55m

$638

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/16

10:30 pm-4:00 pm

1 stop23h 30m

Chicago O'Hare Intl

Sat 5/2

6:05 pm-11:15 pm

1 stop23h 10m

$640

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/16

6:00 pm-4:00 pm

1 stop28h 00m

Chicago O'Hare Intl

Sat 5/2

6:05 pm-12:40 am

1 stop24h 35m

$641

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/16

10:30 pm-4:00 pm

1 stop23h 30m

Chicago O'Hare Intl

Sat 5/2

6:05 pm-11:15 pm

1 stop23h 10m

$642

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/23

10:00 pm-2:15 pm

2 stops22h 15m

Chicago O'Hare Intl

Fri 5/1

4:20 pm-9:40 pm

2 stops23h 20m

$748

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/16

11:00 am-9:40 am

1 stop28h 40m

Chicago O'Hare Intl

Wed 4/29

11:25 am-10:00 am

1 stop16h 35m

$756

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 5/6

10:00 pm-6:15 pm

3 stops26h 15m

Chicago O'Hare Intl

Sun 5/10

10:25 pm-8:00 am

3 stops27h 35m

$798

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 5/6

10:00 pm-6:15 pm

3 stops26h 15m

Chicago O'Hare Intl

Sun 5/10

10:25 pm-11:40 pm

2 stops19h 15m

$800

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Porto and Chicago O'Hare Intl Airport?

How have Porto to Chicago O'Hare Intl Airport flight prices changed over time?

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

15h 30m

Direct flights

None
The fastest flight from Porto to Chicago O'Hare Intl Airport takes 15h 30m
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. 15h 30m 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
Rosemont
Naperville
New Buffalo
Orland Park
Kenosha
Oak Brook
Joliet
Janesville
Racine
Hammond
Aurora
Elgin
Tinley Park
South Holland

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.

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