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

TAP AIR PORTUGAL, British Airways, and SWISS 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.

$300 Cheap Flights from Porto to Chicago in 2025/26

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Find the cheapest flights from Porto to Chicago

Round-trip

One-way

Cheap round-trip flights

5:35 pm - 4:45 pmOPO-ORD

29h 10m1 stop

7:20 pm - 4:45 pmORD-OPO

15h 25m1 stop

$390Scandinavian Airlines

Find Deal

vie., nov. 7 - dom., nov. 23

5:35 pm - 4:45 pmOPO-ORD

29h 10m1 stop

7:20 pm - 4:45 pmORD-OPO

15h 25m1 stop

$403Scandinavian Airlines

Find Deal

vie., nov. 7 - dom., nov. 23

11:30 am - 4:45 pmOPO-ORD

35h 15m2 stops

7:20 pm - 6:50 amORD-OPO

29h 30m3 stops

$538

Find Deal

vie., nov. 7 - dom., nov. 23

11:30 am - 4:45 pmOPO-ORD

35h 15m2 stops

7:20 pm - 6:50 amORD-OPO

29h 30m3 stops

$542

Find Deal

vie., nov. 7 - dom., nov. 23

8:20 am - 2:30 pmOPO-ORD

12h 10m1 stop

4:45 pm - 8:00 pmORD-OPO

21h 15m1 stop

$699Iberia

Find Deal

lun., nov. 24 - lun., dic. 1

8:20 am - 2:30 pmOPO-ORD

12h 10m1 stop

2:50 pm - 11:45 amORD-OPO

14h 55m2 stops

$702Iberia

Find Deal

lun., nov. 24 - lun., dic. 1

8:20 am - 2:30 pmOPO-ORD

12h 10m1 stop

10:29 am - 7:40 amORD-OPO

15h 11m2 stops

$704American Airlines

Find Deal

vie., nov. 7 - dom., nov. 23

8:20 am - 2:30 pmOPO-ORD

12h 10m1 stop

10:29 am - 7:40 amORD-OPO

15h 11m2 stops

$706American Airlines

Find Deal

lun., nov. 24 - lun., dic. 1

9:55 am - 3:20 pmOPO-ORD

34h 25m1 stop

5:20 pm - 10:30 amORD-OPO

11h 10m1 stop

$710KLM

Find Deal

mar., oct. 28 - mar., nov. 4

4:20 pm - 3:00 pmOPO-ORD

28h 40m1 stop

5:10 pm - 3:30 pmORD-OPO

16h 20m1 stop

$808KLM

Find Deal

vie., oct. 10 - vie., oct. 17

Iberia flights from Porto to Chicago

Our best Iberia deals on Porto to Chicago flight tickets

Iberia

Nov 24

OPO8:20 amPorto

12h 10m

1 stop

ORD2:30 pmChicago O'Hare Intl

Dec 1

ORD4:45 pmChicago O'Hare Intl

21h 15m

1 stop

OPO8:00 pmPorto

$699

Find similar

Iberia

Nov 24

OPO8:20 amPorto

12h 10m

1 stop

ORD2:30 pmChicago O'Hare Intl

Dec 1

ORD2:50 pmChicago O'Hare Intl

14h 55m

2 stops

OPO11:45 amPorto

$702

Find similar

Iberia

Nov 24

OPO8:20 amPorto

18h 05m

2 stops

ORD8:25 pmChicago O'Hare Intl

Dec 1

ORD2:50 pmChicago O'Hare Intl

14h 55m

2 stops

OPO11:45 amPorto

$705

Find similar

Delta flights from Porto to Chicago

Our best Delta deals on Porto to Chicago flight tickets

Delta

Nov 24

OPO6:30 amPorto

21h 20m

2 stops

ORD9:50 pmChicago O'Hare Intl

Dec 1

ORD10:30 amChicago O'Hare Intl

17h 45m

2 stops

OPO10:15 amPorto

$716

Find similar

Delta

Oct 4

OPO6:05 amPorto

21h 29m

2 stops

ORD9:34 pmChicago O'Hare Intl

Mar 24

ORD2:10 pmChicago O'Hare Intl

15h 20m

2 stops

OPO10:30 amPorto

$812

Find similar

Delta

Oct 6

OPO6:30 amPorto

14h 10m

1 stop

ORD2:40 pmChicago O'Hare Intl

Mar 26

ORD7:55 pmChicago O'Hare Intl

14h 30m

2 stops

OPO3:25 pmPorto

$861

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortoChicago

OPO - ORD

OPOORD

Porto

vie. 11/7

5:35 pm-4:45 pm

1 stop29h 10m

Chicago O'Hare Intl

dom. 11/23

7:20 pm-4:45 pm

1 stop15h 25m

$390

PortoChicago

OPO - ORD

OPOORD

Porto

vie. 11/7

5:35 pm-4:45 pm

1 stop29h 10m

Chicago O'Hare Intl

dom. 11/23

7:20 pm-4:45 pm

1 stop15h 25m

$403

PortoChicago

OPO - ORD

OPOORD

Porto

vie. 11/7

11:30 am-4:45 pm

2 stops35h 15m

Chicago O'Hare Intl

dom. 11/23

7:20 pm-6:50 am

3 stops29h 30m

$538

PortoChicago

OPO - ORD

OPOORD

Porto

vie. 11/7

11:30 am-4:45 pm

2 stops35h 15m

Chicago O'Hare Intl

dom. 11/23

7:20 pm-6:50 am

3 stops29h 30m

$542

PortoChicago

OPO - ORD

OPOORD

Porto

lun. 11/24

8:20 am-2:30 pm

1 stop12h 10m

Chicago O'Hare Intl

lun. 12/1

4:45 pm-8:00 pm

1 stop21h 15m

$699

PortoChicago

OPO - ORD

OPOORD

Porto

lun. 11/24

8:20 am-2:30 pm

1 stop12h 10m

Chicago O'Hare Intl

lun. 12/1

2:50 pm-11:45 am

2 stops14h 55m

$702

PortoChicago

OPO - ORD

OPOORD

Porto

vie. 11/7

8:20 am-2:30 pm

1 stop12h 10m

Chicago O'Hare Intl

dom. 11/23

10:29 am-7:40 am

2 stops15h 11m

$704

PortoChicago

OPO - ORD

OPOORD

Porto

lun. 11/24

8:20 am-2:30 pm

1 stop12h 10m

Chicago O'Hare Intl

lun. 12/1

10:29 am-7:40 am

2 stops15h 11m

$706

PortoChicago

OPO - ORD

OPOORD

Porto

mar. 10/28

9:55 am-3:20 pm

1 stop34h 25m

Chicago O'Hare Intl

mar. 11/4

5:20 pm-10:30 am

1 stop11h 10m

$710

PortoChicago

OPO - ORD

OPOORD

Porto

vie. 10/10

4:20 pm-3:00 pm

1 stop28h 40m

Chicago O'Hare Intl

vie. 10/17

5:10 pm-3:30 pm

1 stop16h 20m

$808

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 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.

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 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.

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Lansing

Portage

Schererville

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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.