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

TAP AIR PORTUGAL is the most popular carrier operating from Portugal to Chicago

What airlines fly to Chicago?

United Airlines, TAP AIR PORTUGAL and Aer Lingus are the top three most popular airlines that fly to Chicago from Portugal according to our data. United Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Chicago. Keep in mind that there are 4 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Chicago?

Average flight duration from Portugal to Chicago depends on which airport you fly into and out of. Flying from Lisbon to Chicago O'Hare Intl Airport is 9h 15m on average, while flying from Faro to Chicago O'Hare Intl Airport is 13h 15m on average. Chicago O'Hare Intl Airport is the most popular airport in Chicago.

How many flights depart from Portugal to Chicago on average per week?

6 flights are operational weekly from Portugal to Chicago as of August 2025. The most popular departure day for this route is Fri, with 33% of flights per week taking off on this day.

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

Prices for flights from Portugal to Chicago were last updated today.

How many operators does momondo search for flights from Portugal to Chicago?

There are 4 operators available for flights from Portugal to Chicago as of August 2025.

How old do you have to be to fly from Portugal to Chicago?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portugal to Chicago.

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

The required travel and health documents for your Chicago trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$344 Cheap Flights from Portugal to Chicago in 2025

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Find the cheapest flights from Portugal to Chicago

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Portugal to Chicago

4:55 pm - 4:45 pmLIS-ORD

29h 50m1 stop

7:20 pm - 4:05 pmORD-LIS

14h 45m1 stop

$407Scandinavian Airlines

Find Deal

Sun, Nov 23 - Thu, Dec 4

5:10 pm - 4:45 pmFAO-ORD

29h 35m1 stop

7:20 pm - 10:00 amORD-FAO

32h 40m1 stop

$412Scandinavian Airlines

Find Deal

Sat, Nov 22 - Sun, Dec 7

6:05 am - 3:00 pmFAO-ORD

14h 55m1 stop

8:25 pm - 11:50 pmORD-FAO

21h 25m1 stop

$564TAP AIR PORTUGAL

Find Deal

Sun, Nov 23 - Sun, Dec 7

10:15 pm - 2:00 pmLIS-ORD

21h 45m1 stop

9:15 pm - 9:35 pmORD-LIS

18h 20m1 stop

$567Aer Lingus

Find Deal

Wed, Sep 10 - Sat, Sep 20

10:15 pm - 2:00 pmLIS-ORD

21h 45m1 stop

9:15 pm - 9:35 pmORD-LIS

18h 20m1 stop

$568Aer Lingus

Find Deal

Sat, Sep 6 - Fri, Sep 19

8:00 pm - 3:00 pmOPO-ORD

25h 00m1 stop

8:25 pm - 1:00 pmORD-OPO

10h 35m1 stop

$569TAP AIR PORTUGAL

Find Deal

Sat, Nov 22 - Sun, Dec 7

6:30 am - 2:20 pmOPO-ORD

13h 50m1 stop

5:20 pm - 10:30 amORD-OPO

11h 10m1 stop

$673KLM

Find Deal

Mon, Nov 24 - Mon, Dec 1

4:20 pm - 2:40 pmOPO-ORD

28h 20m1 stop

4:15 pm - 10:15 pmORD-OPO

24h 00m1 stop

$677KLM

Find Deal

Tue, Aug 26 - Sun, Aug 31

8:15 am - 9:19 pmOPO-ORD

19h 04m2 stops

4:30 pm - 7:55 pmORD-OPO

21h 25m1 stop

$690American Airlines

Find Deal

Fri, Oct 10 - Fri, Oct 17

8:15 am - 9:19 pmOPO-ORD

19h 04m2 stops

4:30 pm - 11:40 amORD-OPO

13h 10m1 stop

$694American Airlines

Find Deal

Fri, Oct 10 - Fri, Oct 17

Scandinavian Airlines flights from Portugal to Chicago

Our best Scandinavian Airlines deals on Portugal to Chicago flight tickets

Scandinavian Airlines

Nov 23

LIS4:55 pmLisbon Humberto Delgado

29h 50m

1 stop

ORD4:45 pmChicago O'Hare Intl

Dec 4

ORD7:20 pmChicago O'Hare Intl

14h 45m

1 stop

LIS4:05 pmLisbon Humberto Delgado

$407

Find similar

Scandinavian Airlines

Nov 22

FAO5:10 pmFaro

29h 35m

1 stop

ORD4:45 pmChicago O'Hare Intl

Dec 7

ORD7:20 pmChicago O'Hare Intl

32h 40m

1 stop

FAO10:00 amFaro

$412

Find similar

Scandinavian Airlines

Jan 18

LIS4:55 pmLisbon Humberto Delgado

29h 50m

1 stop

ORD4:45 pmChicago O'Hare Intl

Feb 15

ORD7:10 pmChicago O'Hare Intl

14h 55m

1 stop

LIS4:05 pmLisbon Humberto Delgado

$441

Find similar

TAP AIR PORTUGAL flights from Portugal to Chicago

Our best TAP AIR PORTUGAL deals on Portugal to Chicago flight tickets

TAP AIR PORTUGAL

Nov 23

FAO6:05 amFaro

14h 55m

1 stop

ORD3:00 pmChicago O'Hare Intl

Dec 7

ORD8:25 pmChicago O'Hare Intl

21h 25m

1 stop

FAO11:50 pmFaro

$564

Find similar

TAP AIR PORTUGAL

Nov 22

OPO8:00 pmPorto

25h 00m

1 stop

ORD3:00 pmChicago O'Hare Intl

Dec 7

ORD8:25 pmChicago O'Hare Intl

10h 35m

1 stop

OPO1:00 pmPorto

$569

Find similar

TAP AIR PORTUGAL

Nov 23

OPO8:55 amPorto

12h 05m

1 stop

ORD3:00 pmChicago O'Hare Intl

Dec 7

ORD8:25 pmChicago O'Hare Intl

15h 40m

1 stop

OPO6:05 pmPorto

$570

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sun 11/23

4:55 pm-4:45 pm

1 stop29h 50m

Chicago O'Hare Intl

Thu 12/4

7:20 pm-4:05 pm

1 stop14h 45m

$407

FaroChicago

FAO - ORD

FAOORD

Faro

Sat 11/22

5:10 pm-4:45 pm

1 stop29h 35m

Chicago O'Hare Intl

Sun 12/7

7:20 pm-10:00 am

1 stop32h 40m

$412

FaroChicago

FAO - ORD

FAOORD

Faro

Sun 11/23

6:05 am-3:00 pm

1 stop14h 55m

Chicago O'Hare Intl

Sun 12/7

8:25 pm-11:50 pm

1 stop21h 25m

$564

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Wed 9/10

10:15 pm-2:00 pm

1 stop21h 45m

Chicago O'Hare Intl

Sat 9/20

9:15 pm-9:35 pm

1 stop18h 20m

$567

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sat 9/6

10:15 pm-2:00 pm

1 stop21h 45m

Chicago O'Hare Intl

Fri 9/19

9:15 pm-9:35 pm

1 stop18h 20m

$568

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 11/22

8:00 pm-3:00 pm

1 stop25h 00m

Chicago O'Hare Intl

Sun 12/7

8:25 pm-1:00 pm

1 stop10h 35m

$569

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

$673

PortoChicago

OPO - ORD

OPOORD

Porto

Tue 8/26

4:20 pm-2:40 pm

1 stop28h 20m

Chicago O'Hare Intl

Sun 8/31

4:15 pm-10:15 pm

1 stop24h 00m

$677

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 10/10

8:15 am-9:19 pm

2 stops19h 04m

Chicago O'Hare Intl

Fri 10/17

4:30 pm-7:55 pm

1 stop21h 25m

$690

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 10/10

8:15 am-9:19 pm

2 stops19h 04m

Chicago O'Hare Intl

Fri 10/17

4:30 pm-11:40 am

1 stop13h 10m

$694

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 Portugal 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

Other information

What is the cheapest month to fly to Chicago?

The month of February is, on average, the cheapest month to fly to Chicago from Portugal, with most prices found around $634. If you’re not able to fly to Chicago in February, then May is your next best option. Flight prices from Portugal to Chicago during May average around $699.

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 Friday when prices can be found for as low as $906. This is often the case because there is less demand to fly during this day of the week. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Portugal to Chicago for around $1,361.

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

Our most recent data shows that the best time of day to fly to Chicago is in the evening. Flights from Portugal to Chicago during this time can be as low as $622. In contrast, the most expensive time of day to depart to Chicago is in the morning when prices are around $1,145.

What is the cheapest Portugal to Chicago flight route?

Fly from Lisbon Humberto Delgado to Chicago O'Hare Intl for the best Portugal - Chicago flight prices

What cabin class options are available on Portugal to Chicago flights?

There are 3 cabin classes available to choose from on Portugal to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portugal to Chicago flights?

You could potentially save up to 2% on your flight if you consider stops on a Portugal to Chicago flight.

Cheap Portugal to Chicago flight deals and tips

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

Best Price Found	$344
Fastest flight time	12h 00m
Direct flights	Mon, Tue, Thu, Fri, Sat and Sun
Airports in Chicago	2 airports

The best one-way flight to Chicago from Portugal in the past 72 hours is $344. The best round-trip flight deal from Portugal to Chicago found on momondo in the last 72 hours is $407.

The fastest flight from Portugal to Chicago takes 12h 00m

Direct flights go from Portugal to Chicago on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: TAP AIR PORTUGAL and JetBlue.

There are 2 airports near Chicago: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)

Search flight deals

When did momondo last update prices for flights from Portugal to Chicago?
Prices for flights from Portugal to Chicago were last updated today.
How many operators does momondo search for flights from Portugal to Chicago?
There are 4 operators available for flights from Portugal to Chicago as of August 2025.
How old do you have to be to fly from Portugal to Chicago?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portugal to Chicago.
What documentation or ID do you need to fly to Chicago?
The required travel and health documents for your Chicago trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Portugal to Chicago?
momondo data reveals that the most frequently booked plane model on the route from Portugal to Chicago is Airbus A330-900neo, representing 55.70% of all bookings. The subsequent popular models are Airbus A330 at 40.51% and Airbus A330-200 at 3.80%.

Best airlines flying from Portugal to Chicago

Compare and see reviews for airlines that fly from Portugal to Chicago with momondo

Airline	Rating	Free Cancellation	Price
TAP AIR PORTUGAL	PriceFrom $497	Free Cancellation	Rating 7.1 1,939 reviews	Search TAP AIR PORTUGAL flights
Aer Lingus	PriceFrom $579	Free Cancellation	Rating 7.1 1,193 reviews	Search Aer Lingus flights
Delta	PriceFrom $650	Free Cancellation	Rating 8.0 7,985 reviews	Search Delta flights
United Airlines	PriceFrom $733	Free Cancellation	Rating 7.4 8,905 reviews	Search United Airlines flights

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Hammond

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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 Portugal to Chicago?

It is quick and easy to find Portugal to Chicago flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Chicago that suits you.

Can I find flights from Portugal to Chicago with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Portugal to Chicago flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Portugal 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 Portugal to Chicago right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Chicago from Portugal. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.