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

Iberia, TAP AIR PORTUGAL, and Scandinavian Airlines 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.

$319 Cheap Flights from Porto to Chicago in 2025/26

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 $818 to $1,036. The lowest price recently found on this route was $480.

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Find the cheapest flights from Porto to Chicago

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One-way

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5:35 pm - 4:45 pmOPO-ORD

29h 10m1 stop

7:20 pm - 4:55 pmORD-OPO

15h 35m1 stop

$480Scandinavian Airlines

Find Deal

Fri, Nov 14 - Thu, Nov 27

5:35 pm - 4:45 pmOPO-ORD

29h 10m1 stop

7:20 pm - 4:45 pmORD-OPO

15h 25m1 stop

$502Scandinavian Airlines

Find Deal

Fri, Nov 21 - Sun, Dec 7

5:35 pm - 4:45 pmOPO-ORD

29h 10m1 stop

7:20 pm - 4:45 pmORD-OPO

15h 25m1 stop

$550Scandinavian Airlines

Find Deal

Fri, Nov 21 - Sun, Dec 7

6:00 pm - 2:45 pmOPO-ORD

26h 45m1 stop

8:25 pm - 5:00 pmORD-OPO

14h 35m1 stop

$569TAP AIR PORTUGAL

Find Deal

Sat, Nov 22 - Sun, Jan 18

7:35 am - 9:47 amOPO-ORD

32h 12m2 stops

12:17 pm - 7:20 pmORD-OPO

25h 03m2 stops

$658Multiple Airlines

Find Deal

Thu, Nov 13 - Mon, Nov 17

8:10 pm - 2:55 pmOPO-ORD

24h 45m1 stop

10:15 am - 8:10 amORD-OPO

39h 55m2 stops

$666Multiple Airlines

Find Deal

Wed, Feb 4 - Fri, Feb 20

12:30 pm - 8:05 pmOPO-ORD

13h 35m1 stop

6:00 pm - 1:15 pmORD-OPO

13h 15m1 stop

$775Lufthansa

Find Deal

Wed, Dec 17 - Wed, Jan 7

6:30 am - 2:20 pmOPO-ORD

13h 50m1 stop

5:20 pm - 10:30 amORD-OPO

11h 10m1 stop

$777Delta

Find Deal

Mon, Nov 24 - Mon, Dec 1

12:30 pm - 8:05 pmOPO-ORD

13h 35m1 stop

6:00 pm - 12:50 pmORD-OPO

12h 50m1 stop

$780Lufthansa

Find Deal

Fri, Nov 21 - Sun, Dec 7

6:35 am - 8:29 pmOPO-ORD

19h 54m2 stops

10:35 am - 10:30 amORD-OPO

17h 55m2 stops

$783Delta

Find Deal

Thu, Nov 13 - Mon, Nov 17

Scandinavian Airlines flights from Porto to Chicago

Our best Scandinavian Airlines deals on Porto to Chicago flight tickets

Scandinavian Airlines

Nov 14

OPO5:35 pmPorto

29h 10m

1 stop

ORD4:45 pmChicago O'Hare Intl

Nov 27

ORD7:20 pmChicago O'Hare Intl

15h 35m

1 stop

OPO4:55 pmPorto

$480

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

$502

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

$550

Find similar

United Airlines flights from Porto to Chicago

Our best United Airlines deals on Porto to Chicago flight tickets

United Airlines

Feb 1

OPO6:00 amPorto

15h 20m

1 stop

ORD3:20 pmChicago O'Hare Intl

Feb 21

ORD3:50 pmChicago O'Hare Intl

11h 40m

1 stop

OPO9:30 amPorto

$796

Find similar

United Airlines

Feb 2

OPO6:00 amPorto

13h 10m

1 stop

ORD1:10 pmChicago O'Hare Intl

Feb 21

ORD1:00 pmChicago O'Hare Intl

14h 30m

2 stops

OPO9:30 amPorto

$797

Find similar

United Airlines

Feb 1

OPO6:00 amPorto

18h 15m

2 stops

ORD6:15 pmChicago O'Hare Intl

Feb 21

ORD2:00 pmChicago O'Hare Intl

13h 30m

2 stops

OPO9:30 amPorto

$801

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 11/14

5:35 pm-4:45 pm

1 stop29h 10m

Chicago O'Hare Intl

Thu 11/27

7:20 pm-4:55 pm

1 stop15h 35m

$480

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 11/21

5:35 pm-4:45 pm

1 stop29h 10m

Chicago O'Hare Intl

Sun 12/7

7:20 pm-4:45 pm

1 stop15h 25m

$502

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 11/21

5:35 pm-4:45 pm

1 stop29h 10m

Chicago O'Hare Intl

Sun 12/7

7:20 pm-4:45 pm

1 stop15h 25m

$550

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 11/22

6:00 pm-2:45 pm

1 stop26h 45m

Chicago O'Hare Intl

Sun 1/18

8:25 pm-5:00 pm

1 stop14h 35m

$569

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 11/13

7:35 am-9:47 am

2 stops32h 12m

Chicago O'Hare Intl

Mon 11/17

12:17 pm-7:20 pm

2 stops25h 03m

$658

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 2/4

8:10 pm-2:55 pm

1 stop24h 45m

Chicago O'Hare Intl

Fri 2/20

10:15 am-8:10 am

2 stops39h 55m

$666

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 12/17

12:30 pm-8:05 pm

1 stop13h 35m

Chicago O'Hare Intl

Wed 1/7

6:00 pm-1:15 pm

1 stop13h 15m

$775

PortoChicago

OPO - ORD

OPOORD

Porto

Mon 11/24

6:30 am-2:20 pm

1 stop13h 50m

Chicago O'Hare Intl

Mon 12/1

5:20 pm-10:30 am

1 stop11h 10m

$777

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 11/21

12:30 pm-8:05 pm

1 stop13h 35m

Chicago O'Hare Intl

Sun 12/7

6:00 pm-12:50 pm

1 stop12h 50m

$780

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 11/13

6:35 am-8:29 pm

2 stops19h 54m

Chicago O'Hare Intl

Mon 11/17

10:35 am-10:30 am

2 stops17h 55m

$783

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

Direct flights	None

There are no direct flights from Porto to Chicago. There are no popular flight routes from Porto to Chicago.

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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 13h 10m.
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.

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.