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.

$385 Cheap Flights from Porto to Chicago O'Hare Intl Airport in 2026

Find the cheapest flights from Porto to Chicago

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:10 am - 12:40 pmOPO Porto-ORD Chicago O'Hare Intl

35h 30m2 stops Madrid Barajas Lisbon Humberto Delgado

6:00 pm - 11:50 pmORD Chicago O'Hare Intl-OPO Porto

23h 50m2 stops Lisbon Humberto Delgado Madrid Barajas

$624Multiple Airlines

Wed, Sep 16 - Wed, Sep 23

5:45 pm - 5:45 pmOPO Porto-ORD Chicago O'Hare Intl

29h 00m1 stop Kastrup Copenhagen

7:15 pm - 5:00 pmORD Chicago O'Hare Intl-OPO Porto

15h 45m1 stop Kastrup Copenhagen

$635Scandinavian Airlines

Fri, Oct 30 - Wed, Nov 4

4:05 pm - 4:00 pmOPO Porto-ORD Chicago O'Hare Intl

29h 55m2 stops Madrid Barajas Lisbon Humberto Delgado

6:00 pm - 11:50 pmORD Chicago O'Hare Intl-OPO Porto

23h 50m2 stops Lisbon Humberto Delgado Madrid Barajas

$636Multiple Airlines

Thu, Sep 17 - Wed, Sep 30

8:10 pm - 4:00 pmOPO Porto-ORD Chicago O'Hare Intl

25h 50m2 stops Madrid Barajas Lisbon Humberto Delgado

6:00 pm - 11:50 pmORD Chicago O'Hare Intl-OPO Porto

23h 50m2 stops Lisbon Humberto Delgado Madrid Barajas

$651Multiple Airlines

Thu, Sep 17 - Wed, Sep 30

5:45 pm - 5:45 pmOPO Porto-ORD Chicago O'Hare Intl

29h 00m1 stop Kastrup Copenhagen

7:15 pm - 11:10 amORD Chicago O'Hare Intl-OPO Porto

33h 55m1 stop Kastrup Copenhagen

$668Scandinavian Airlines

Fri, Oct 30 - Thu, Nov 5

5:55 pm - 4:10 pmOPO Porto-ORD Chicago O'Hare Intl

28h 15m1 stop Kastrup Copenhagen

7:15 pm - 5:05 pmORD Chicago O'Hare Intl-OPO Porto

15h 50m1 stop Kastrup Copenhagen

$673Scandinavian Airlines

Fri, Sep 4 - Thu, Oct 1

11:50 am - 4:10 pmOPO Porto-ORD Chicago O'Hare Intl

34h 20m1 stop Kastrup Copenhagen

7:15 pm - 5:05 pmORD Chicago O'Hare Intl-OPO Porto

15h 50m1 stop Kastrup Copenhagen

$690Scandinavian Airlines

Wed, Sep 9 - Sat, Oct 3

9:45 pm - 2:00 pmOPO Porto-ORD Chicago O'Hare Intl

22h 15m1 stop Dublin

9:00 pm - 8:00 amORD Chicago O'Hare Intl-OPO Porto

29h 00m2 stops Dublin Barcelona-El Prat

$702Multiple Airlines

Fri, Sep 4 - Mon, Sep 14

9:45 pm - 2:00 pmOPO Porto-ORD Chicago O'Hare Intl

22h 15m1 stop Dublin

9:00 pm - 8:00 amORD Chicago O'Hare Intl-OPO Porto

29h 00m2 stops Dublin Barcelona-El Prat

$705Multiple Airlines

Fri, Sep 4 - Mon, Sep 14

11:50 am - 4:10 pmOPO Porto-ORD Chicago O'Hare Intl

34h 20m1 stop Kastrup Copenhagen

7:15 pm - 5:05 pmORD Chicago O'Hare Intl-OPO Porto

15h 50m1 stop Kastrup Copenhagen

$713Scandinavian Airlines

Wed, Sep 9 - Thu, Oct 1

Cheap last minute flights

Enter your travel dates to find the best prices.

5:00 am - 4:17 pmOPO Porto-ORD Chicago O'Hare Intl

17h 17m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

5:10 pm - 3:25 pmORD Chicago O'Hare Intl-OPO Porto

16h 15m1 stop Paris Charles de Gaulle

$1,045Multiple Airlines

Sat, Aug 15 - Mon, Aug 31

5:00 am - 4:17 pmOPO Porto-ORD Chicago O'Hare Intl

17h 17m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

6:00 pm - 3:25 pmORD Chicago O'Hare Intl-OPO Porto

15h 25m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$1,045Multiple Airlines

Sat, Aug 15 - Mon, Aug 31

5:55 am - 4:17 pmOPO Porto-ORD Chicago O'Hare Intl

16h 22m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County

6:00 pm - 3:25 pmORD Chicago O'Hare Intl-OPO Porto

15h 25m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$1,051Air France

Fri, Aug 14 - Mon, Aug 31

5:55 am - 4:17 pmOPO Porto-ORD Chicago O'Hare Intl

16h 22m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County

5:10 pm - 3:25 pmORD Chicago O'Hare Intl-OPO Porto

16h 15m1 stop Paris Charles de Gaulle

$1,051Air France

Fri, Aug 14 - Mon, Aug 31

5:55 am - 3:10 pmOPO Porto-ORD Chicago O'Hare Intl

15h 15m1 stop Paris Charles de Gaulle

5:10 pm - 3:25 pmORD Chicago O'Hare Intl-OPO Porto

16h 15m1 stop Paris Charles de Gaulle

$1,105KLM

Fri, Aug 14 - Mon, Aug 31

5:55 am - 4:17 pmOPO Porto-ORD Chicago O'Hare Intl

16h 22m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County

5:10 pm - 3:25 pmORD Chicago O'Hare Intl-OPO Porto

16h 15m1 stop Paris Charles de Gaulle

$1,109Air France

Thu, Aug 13 - Mon, Aug 31

5:55 am - 4:17 pmOPO Porto-ORD Chicago O'Hare Intl

16h 22m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County

6:00 pm - 3:25 pmORD Chicago O'Hare Intl-OPO Porto

15h 25m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

$1,109Air France

Thu, Aug 13 - Mon, Aug 31

1:25 pm - 9:52 pmOPO Porto-ORD Chicago O'Hare Intl

14h 27m1 stop New York John F Kennedy Intl

5:10 pm - 3:25 pmORD Chicago O'Hare Intl-OPO Porto

16h 15m1 stop Paris Charles de Gaulle

$1,117KLM

Thu, Aug 13 - Mon, Aug 31

5:00 am - 4:17 pmOPO Porto-ORD Chicago O'Hare Intl

17h 17m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

5:10 pm - 3:30 pmORD Chicago O'Hare Intl-OPO Porto

16h 20m1 stop Paris Charles de Gaulle

$1,122KLM

Sat, Aug 15 - Sun, Aug 30

5:55 am - 4:17 pmOPO Porto-ORD Chicago O'Hare Intl

16h 22m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County

5:10 pm - 3:30 pmORD Chicago O'Hare Intl-OPO Porto

16h 20m1 stop Paris Charles de Gaulle

$1,129Multiple Airlines

Fri, Aug 14 - Sun, Aug 30

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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

Oct 30

OPO5:45 pmPorto

29h 00m

1 stop

ORD5:45 pmChicago O'Hare Intl

Nov 4

ORD7:15 pmChicago O'Hare Intl

15h 45m

1 stop

OPO5:00 pmPorto

$635

Scandinavian Airlines

Oct 30

OPO5:45 pmPorto

29h 00m

1 stop

ORD5:45 pmChicago O'Hare Intl

Nov 5

ORD7:15 pmChicago O'Hare Intl

33h 55m

1 stop

OPO11:10 amPorto

$668

Scandinavian Airlines

Sep 4

OPO5:55 pmPorto

28h 15m

1 stop

ORD4:10 pmChicago O'Hare Intl

Oct 1

ORD7:15 pmChicago O'Hare Intl

15h 50m

1 stop

OPO5:05 pmPorto

$673

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

Sep 17

OPO10:30 pmPorto

23h 30m

1 stop

ORD4:00 pmChicago O'Hare Intl

Sep 30

ORD6:00 pmChicago O'Hare Intl

17h 00m

1 stop

OPO5:00 pmPorto

$742

TAP AIR PORTUGAL

Sep 17

OPO7:00 amPorto

11h 40m

1 stop

ORD12:40 pmChicago O'Hare Intl

Sep 30

ORD6:00 pmChicago O'Hare Intl

17h 00m

1 stop

OPO5:00 pmPorto

$744

TAP AIR PORTUGAL

Sep 17

OPO10:30 pmPorto

23h 30m

1 stop

ORD4:00 pmChicago O'Hare Intl

Sep 30

ORD6:00 pmChicago O'Hare Intl

19h 00m

1 stop

OPO7:00 pmPorto

$749

momondo Fare Finder

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 Porto - ORD Chicago O'Hare Intl

OPOORD

Porto

Wed 9/16

7:10 am-12:40 pm

2 stops35h 30m

Chicago O'Hare Intl

Wed 9/23

6:00 pm-11:50 pm

2 stops23h 50m

$624

PortoChicago

OPO Porto - ORD Chicago O'Hare Intl

OPOORD

Porto

Fri 10/30

5:45 pm-5:45 pm

1 stop29h 00m

Chicago O'Hare Intl

Wed 11/4

7:15 pm-5:00 pm

1 stop15h 45m

$635

PortoChicago

OPO Porto - ORD Chicago O'Hare Intl

OPOORD

Porto

Thu 9/17

4:05 pm-4:00 pm

2 stops29h 55m

Chicago O'Hare Intl

Wed 9/30

6:00 pm-11:50 pm

2 stops23h 50m

$636

PortoChicago

OPO Porto - ORD Chicago O'Hare Intl

OPOORD

Porto

Thu 9/17

8:10 pm-4:00 pm

2 stops25h 50m

Chicago O'Hare Intl

Wed 9/30

6:00 pm-11:50 pm

2 stops23h 50m

$651

PortoChicago

OPO Porto - ORD Chicago O'Hare Intl

OPOORD

Porto

Fri 10/30

5:45 pm-5:45 pm

1 stop29h 00m

Chicago O'Hare Intl

Thu 11/5

7:15 pm-11:10 am

1 stop33h 55m

$668

Quickest round-trip

PortoChicago

OPO Porto - ORD Chicago O'Hare Intl

OPOORD

Porto

Fri 9/4

5:55 pm-4:10 pm

1 stop28h 15m

Chicago O'Hare Intl

Thu 10/1

7:15 pm-5:05 pm

1 stop15h 50m

$673

PortoChicago

OPO Porto - ORD Chicago O'Hare Intl

OPOORD

Porto

Wed 9/9

11:50 am-4:10 pm

1 stop34h 20m

Chicago O'Hare Intl

Sat 10/3

7:15 pm-5:05 pm

1 stop15h 50m

$690

PortoChicago

OPO Porto - ORD Chicago O'Hare Intl

OPOORD

Porto

Fri 9/4

9:45 pm-2:00 pm

1 stop22h 15m

Chicago O'Hare Intl

Mon 9/14

9:00 pm-8:00 am

2 stops29h 00m

$702

PortoChicago

OPO Porto - ORD Chicago O'Hare Intl

OPOORD

Porto

Fri 9/4

9:45 pm-2:00 pm

1 stop22h 15m

Chicago O'Hare Intl

Mon 9/14

9:00 pm-8:00 am

2 stops29h 00m

$705

PortoChicago

OPO Porto - ORD Chicago O'Hare Intl

OPOORD

Porto

Wed 9/9

11:50 am-4:10 pm

1 stop34h 20m

Chicago O'Hare Intl

Thu 10/1

7:15 pm-5:05 pm

1 stop15h 50m

$713

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 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 airline that flies from Porto to Chicago O'Hare Intl?

Iberia and Scandinavian Airlines are the most popular carriers operating from Porto to Chicago O'Hare Intl

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	12h 04m
Direct flights	None

The fastest flight from Porto to Chicago O'Hare Intl Airport takes 12h 04m

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

Frequently asked questions about flying from Porto to Chicago O'Hare Intl Airport

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 04m 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.

Lake Geneva

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Rockford

South Haven

Gurnee

Rosemont

Oak Brook

Orland Park

Naperville

Joliet

New Buffalo

Kenosha

Hammond

Racine

Aurora

Janesville

Elgin

South Holland

Evanston

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.