What is the cheapest airline that flies from Porto to Chicago?

TAP AIR PORTUGAL, Turkish Airlines, and Iberia are the most popular carriers operating from Porto to Chicago

When did momondo last update prices for flights from Porto Airport to Chicago?

Prices for flights from Porto Airport to Chicago were last updated today.

How old do you have to be to fly from Porto Airport to Chicago?

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.

What documentation or ID do you need to fly to Chicago?

The travel and health documents you'll need for your trip to Chicago may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$339 Cheap Flights from Porto to Chicago in 2025

Q: What is the typical price of a round-trip flight between Porto and Chicago?

Prices are currently low for flights on this route. Typical prices usually range from $984 to $1,145. The lowest price recently found on this route was $542.

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Find the cheapest flights from Porto to Chicago

Round-trip

One-way

Cheap round-trip flights

9:15 pm - 4:30 pmOPO-ORD

25h 15m1 stop

6:00 pm - 5:00 pmORD-OPO

17h 00m1 stop

$542TAP AIR PORTUGAL

Find Deal

Thu, Sep 18 - Thu, Oct 2

10:25 pm - 4:30 pmOPO-ORD

24h 05m1 stop

6:00 pm - 11:00 pmORD-OPO

23h 00m1 stop

$567TAP AIR PORTUGAL

Find Deal

Thu, Sep 18 - Thu, Oct 2

12:50 pm - 4:10 pmOPO-ORD

33h 20m2 stops

6:00 pm - 10:05 pmORD-OPO

22h 05m2 stops

$657

Find Deal

Thu, Sep 11 - Thu, Sep 25

12:50 pm - 4:10 pmOPO-ORD

33h 20m2 stops

11:13 am - 10:30 amORD-OPO

17h 17m1 stop

$671

Find Deal

Thu, Sep 11 - Thu, Sep 25

4:20 pm - 2:10 pmOPO-ORD

27h 50m1 stop

5:10 pm - 8:35 pmORD-OPO

21h 25m1 stop

$675KLM

Find Deal

Wed, Aug 27 - Fri, Sep 26

6:30 am - 2:10 pmOPO-ORD

13h 40m1 stop

2:05 pm - 3:30 pmORD-OPO

19h 25m2 stops

$677Delta

Find Deal

Thu, Sep 18 - Thu, Oct 2

6:15 am - 9:54 pmOPO-ORD

21h 39m2 stops

5:10 pm - 3:30 pmORD-OPO

16h 20m1 stop

$680Delta

Find Deal

Wed, Aug 27 - Fri, Sep 26

8:15 am - 2:15 pmOPO-ORD

12h 00m1 stop

4:30 pm - 7:55 pmORD-OPO

21h 25m1 stop

$687Iberia

Find Deal

Wed, Aug 27 - Fri, Sep 26

7:00 pm - 2:10 pmOPO-ORD

25h 10m1 stop

4:15 pm - 10:40 amORD-OPO

12h 25m1 stop

$689KLM

Find Deal

Sat, Sep 13 - Sat, Sep 20

8:15 am - 7:45 pmOPO-ORD

17h 30m2 stops

4:30 pm - 11:40 amORD-OPO

13h 10m1 stop

$698Iberia

Find Deal

Sat, Sep 13 - Sat, Sep 20

American Airlines flights from Porto to Chicago

Our best American Airlines deals on Porto to Chicago flight tickets

American Airlines

Oct 10

OPO8:15 amPorto

19h 04m

2 stops

ORD9:19 pmChicago O'Hare Intl

Oct 17

ORD4:30 pmChicago O'Hare Intl

17h 25m

1 stop

OPO3:55 pmPorto

$694

Find similar

American Airlines

Aug 27

OPO8:15 amPorto

12h 00m

1 stop

ORD2:15 pmChicago O'Hare Intl

Sep 26

ORD11:46 amChicago O'Hare Intl

13h 49m

2 stops

OPO7:35 amPorto

$697

Find similar

American Airlines

Oct 10

OPO8:15 amPorto

17h 30m

2 stops

ORD7:45 pmChicago O'Hare Intl

Oct 17

ORD9:41 amChicago O'Hare Intl

15h 54m

2 stops

OPO7:35 amPorto

$699

Find similar

United Airlines flights from Porto to Chicago

Our best United Airlines deals on Porto to Chicago flight tickets

United Airlines

Sep 14

OPO11:20 amPorto

14h 51m

1 stop

ORD8:11 pmChicago O'Hare Intl

Sep 21

ORD12:50 pmChicago O'Hare Intl

14h 55m

2 stops

OPO9:45 amPorto

$786

Find similar

United Airlines

Sep 14

OPO9:15 amPorto

15h 10m

2 stops

ORD6:25 pmChicago O'Hare Intl

Sep 21

ORD12:50 pmChicago O'Hare Intl

14h 55m

2 stops

OPO9:45 amPorto

$792

Find similar

United Airlines

Oct 27

OPO12:35 pmPorto

16h 08m

2 stops

ORD11:43 pmChicago O'Hare Intl

Nov 3

ORD2:00 pmChicago O'Hare Intl

13h 30m

2 stops

OPO9:30 amPorto

$812

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 9/18

9:15 pm-4:30 pm

1 stop25h 15m

Chicago O'Hare Intl

Thu 10/2

6:00 pm-5:00 pm

1 stop17h 00m

$542

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 9/18

10:25 pm-4:30 pm

1 stop24h 05m

Chicago O'Hare Intl

Thu 10/2

6:00 pm-11:00 pm

1 stop23h 00m

$567

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 9/11

12:50 pm-4:10 pm

2 stops33h 20m

Chicago O'Hare Intl

Thu 9/25

6:00 pm-10:05 pm

2 stops22h 05m

$657

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 9/11

12:50 pm-4:10 pm

2 stops33h 20m

Chicago O'Hare Intl

Thu 9/25

11:13 am-10:30 am

1 stop17h 17m

$671

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 8/27

4:20 pm-2:10 pm

1 stop27h 50m

Chicago O'Hare Intl

Fri 9/26

5:10 pm-8:35 pm

1 stop21h 25m

$675

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 9/18

6:30 am-2:10 pm

1 stop13h 40m

Chicago O'Hare Intl

Thu 10/2

2:05 pm-3:30 pm

2 stops19h 25m

$677

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 8/27

6:15 am-9:54 pm

2 stops21h 39m

Chicago O'Hare Intl

Fri 9/26

5:10 pm-3:30 pm

1 stop16h 20m

$680

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 8/27

8:15 am-2:15 pm

1 stop12h 00m

Chicago O'Hare Intl

Fri 9/26

4:30 pm-7:55 pm

1 stop21h 25m

$687

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 9/13

7:00 pm-2:10 pm

1 stop25h 10m

Chicago O'Hare Intl

Sat 9/20

4:15 pm-10:40 am

1 stop12h 25m

$689

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 9/13

8:15 am-7:45 pm

2 stops17h 30m

Chicago O'Hare Intl

Sat 9/20

4:30 pm-11:40 am

1 stop13h 10m

$698

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Porto to Chicago

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

Prices

Airlines

What is the typical price of a round-trip flight between Porto and Chicago?

What is the cheapest day to depart on your flight to Chicago?

The cheapest day to depart on your flight to Chicago is on a Saturday when prices can be found for as low as $581. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Porto to Chicago for around $956.

When to book flights from Porto to Chicago

Are you open to changing your travel dates? Check out the ideal times to fly from Porto to Chicago according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Porto to Chicago (OPO to CHI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Porto to Chicago

Best Price Found	$339
Fastest flight time	11h 30m
Direct flights	None
Airports in Chicago	1 airport

The best one-way flight to Chicago from Porto in the past 72 hours is $339. The best round-trip flight deal from Porto to Chicago found on momondo in the last 72 hours is $542.

The fastest flight from Porto to Chicago takes 11h 30m

There are no direct flights from Porto to Chicago. Popular non-direct route for this connection is Porto Airport - Chicago O'Hare Intl Airport.

There is 1 airport near Chicago: Chicago O'Hare Intl (ORD)

Search flight deals

How far is Porto to Chicago by plane?
Porto and Chicago are 3927.7 mi apart from one another. By plane, this route typically takes 12h 00m.
When did momondo last update prices for flights from Porto Airport to Chicago?
Prices for flights from Porto Airport to Chicago were last updated today.
How old do you have to be to fly from Porto Airport to Chicago?
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.
What documentation or ID do you need to fly to Chicago?
The travel and health documents you'll need for your trip to Chicago may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Porto to Chicago?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Porto to Chicago is KLM (100% of total bookings).

Merrillville

New Buffalo

Hammond

Benton Harbor

Saint Joseph

Portage

Lansing

Schererville

Valparaiso

Crown Point

Munster

Chesterton

Monticello

Porter

Griffith

Saint John

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?

All flight searches from Porto to Chicago on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Porto and Chicago by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Porto to Chicago flights. All you need is a valid email address and we will do the rest; it is that quick and easy.