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

As of July 2026, there are 4 flights per week flying from Portugal to Illinois. The most common day of the week flights depart is Wed, with 50% of flights taking off on this day.

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

Iberia and American Airlines are the most popular carriers operating from Portugal to Illinois

How long is the flight from Portugal to Illinois?

The flight from Portugal to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Lisbon (a popular airport in Portugal) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 9h 20m on average. If you fly from Porto (another popular airport in Portugal) to Chicago O'Hare Intl Airport, then the average flight time is 12h 05m.

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

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

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

The number of operators available for flights from Portugal to Illinois is 1 as of July 2026.

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

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 Illinois.

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

The required travel and health documents for your Illinois 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 Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$339 Cheap Flights from Portugal to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portugal to Illinois

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Portugal to Illinois

Enter your travel dates to find the best prices.

8:25 am - 2:25 pm

LIS

ORD

12h 00m

1 stop

4:55 pm - 11:50 am

ORD

LIS

12h 55m

1 stop

$567Iberia

Thu, Sep 17 - Sat, Sep 26

6:30 am - 4:10 pm

LIS

ORD

14h 40m

1 stop

5:10 pm - 12:05 pm

ORD

LIS

12h 55m

1 stop

$570Multiple Airlines

Wed, Oct 28 - Sun, Nov 15

6:30 am - 2:55 pm

LIS

ORD

14h 25m

1 stop

6:50 pm - 2:50 pm

ORD

LIS

14h 00m

1 stop

$580Multiple Airlines

Mon, Dec 14 - Wed, Jan 13

6:35 am - 4:00 pm

LIS

ORD

15h 25m

1 stop

10:20 pm - 11:25 pm

ORD

LIS

19h 05m

1 stop

$581Finnair

Fri, Oct 16 - Wed, Oct 21

11:45 am - 7:15 pm

FAO

ORD

13h 30m

1 stop

9:00 pm - 7:25 pm

ORD

FAO

16h 25m

1 stop

$589Aer Lingus

Thu, Aug 20 - Tue, Aug 25

11:45 am - 7:15 pm

FAO

ORD

13h 30m

1 stop

3:45 pm - 10:35 am

ORD

FAO

12h 50m

1 stop

$590Aer Lingus

Tue, Sep 1 - Tue, Sep 8

6:35 am - 2:25 pm

LIS

ORD

13h 50m

1 stop

5:55 pm - 5:45 pm

ORD

LIS

17h 50m

1 stop

$590American Airlines

Sat, Sep 5 - Sun, Sep 13

8:20 am - 2:55 pm

LIS

ORD

12h 35m

1 stop

6:50 pm - 6:55 pm

ORD

LIS

18h 05m

1 stop

$594American Airlines

Fri, Nov 20 - Mon, Nov 23

11:10 am - 3:00 pm

FAO

ORD

33h 50m

1 stop

9:15 pm - 10:20 am

ORD

FAO

31h 05m

1 stop

$594British Airways

Mon, Aug 17 - Sun, Aug 23

11:05 am - 5:01 pm

LIS

ORD

11h 56m

1 stop

9:15 pm - 10:05 am

ORD

LIS

30h 50m

1 stop

$597British Airways

Fri, Aug 21 - Sat, Sep 5

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Iberia flights from Portugal to Illinois

Our best Iberia deals on Portugal to Illinois flight tickets

Iberia

Sep 17

LIS8:25 amLisbon Humberto Delgado

12h 00m

1 stop

ORD2:25 pmChicago O'Hare Intl

Sep 26

ORD4:55 pmChicago O'Hare Intl

12h 55m

1 stop

LIS11:50 amLisbon Humberto Delgado

$567

Iberia

Sep 8

OPO8:20 amPorto

12h 05m

1 stop

ORD2:25 pmChicago O'Hare Intl

Sep 18

ORD11:37 amChicago O'Hare Intl

14h 03m

2 stops

OPO7:40 amPorto

$594

Iberia

Sep 18

OPO8:40 pmPorto

25h 20m

1 stop

ORD4:00 pmChicago O'Hare Intl

Sep 26

ORD4:55 pmChicago O'Hare Intl

17h 05m

1 stop

OPO4:00 pmPorto

$618

American Airlines flights from Portugal to Illinois

Our best American Airlines deals on Portugal to Illinois flight tickets

American Airlines

Sep 5

LIS6:35 amLisbon Humberto Delgado

13h 50m

1 stop

ORD2:25 pmChicago O'Hare Intl

Sep 13

ORD5:55 pmChicago O'Hare Intl

17h 50m

1 stop

LIS5:45 pmLisbon Humberto Delgado

$590

American Airlines

Nov 20

LIS8:20 amLisbon Humberto Delgado

12h 35m

1 stop

ORD2:55 pmChicago O'Hare Intl

Nov 23

ORD6:50 pmChicago O'Hare Intl

18h 05m

1 stop

LIS6:55 pmLisbon Humberto Delgado

$594

American Airlines

Oct 29

LIS8:20 amLisbon Humberto Delgado

12h 50m

1 stop

ORD4:10 pmChicago O'Hare Intl

Nov 14

ORD5:10 pmChicago O'Hare Intl

15h 40m

1 stop

LIS2:50 pmLisbon Humberto Delgado

$595

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Thu 9/17

8:25 am-2:25 pm

1 stop12h 00m

Chicago O'Hare Intl

Sat 9/26

4:55 pm-11:50 am

1 stop12h 55m

$567

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Wed 10/28

6:30 am-4:10 pm

1 stop14h 40m

Chicago O'Hare Intl

Sun 11/15

5:10 pm-12:05 pm

1 stop12h 55m

$570

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Mon 12/14

6:30 am-2:55 pm

1 stop14h 25m

Chicago O'Hare Intl

Wed 1/13

6:50 pm-2:50 pm

1 stop14h 00m

$580

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 10/16

6:35 am-4:00 pm

1 stop15h 25m

Chicago O'Hare Intl

Wed 10/21

10:20 pm-11:25 pm

1 stop19h 05m

$581

FaroChicago

FAO - ORD

FAOORD

Faro

Thu 8/20

11:45 am-7:15 pm

1 stop13h 30m

Chicago O'Hare Intl

Tue 8/25

9:00 pm-7:25 pm

1 stop16h 25m

$589

FaroChicago

FAO - ORD

FAOORD

Faro

Tue 9/1

11:45 am-7:15 pm

1 stop13h 30m

Chicago O'Hare Intl

Tue 9/8

3:45 pm-10:35 am

1 stop12h 50m

$590

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sat 9/5

6:35 am-2:25 pm

1 stop13h 50m

Chicago O'Hare Intl

Sun 9/13

5:55 pm-5:45 pm

1 stop17h 50m

$590

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 11/20

8:20 am-2:55 pm

1 stop12h 35m

Chicago O'Hare Intl

Mon 11/23

6:50 pm-6:55 pm

1 stop18h 05m

$594

FaroChicago

FAO - ORD

FAOORD

Faro

Mon 8/17

11:10 am-3:00 pm

1 stop33h 50m

Chicago O'Hare Intl

Sun 8/23

9:15 pm-10:20 am

1 stop31h 05m

$594

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 8/21

11:05 am-5:01 pm

1 stop11h 56m

Chicago O'Hare Intl

Sat 9/5

9:15 pm-10:05 am

1 stop30h 50m

$597

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 Illinois

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 Illinois?

The cheapest month to fly to Illinois from Portugal is in February. Flight prices, which tend to average around $695, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $744.

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

The cheapest day to depart from Portugal to Illinois is on a Friday when prices can be found for as low as $1,056. Flights from Portugal to Illinois on a Sunday will generally be more expensive and average around $1,111. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from Portugal to Illinois during this time can be as low as $933. Flights in the morning are often more expensive with an average ticket price of $1,082.

What is the cheapest Portugal to Illinois flight route?

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

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

There are 2 cabin classes available to choose from on Portugal to Illinois 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 Illinois flights?

You could potentially save up to 17% on your flight if you consider stops on a Portugal to Illinois flight.

Cheap Portugal to Illinois flight deals and tips

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

Best Price Found	$680
Fastest flight time	9h 20m
Direct flights	Mon, Thu, Fri, Sat and Sun
Airports in Illinois	98 airports

The best one-way flight to Illinois from Portugal in the past 72 hours is $680. The best round-trip flight deal from Portugal to Illinois found on momondo in the last 72 hours is $983.

The fastest flight from Portugal to Illinois takes 9h 20m

Direct flights go from Portugal to Illinois on Monday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.

There are 98 airports in Illinois. From Portugal there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

Frequently asked questions about flying from Portugal to Illinois

When did momondo last update prices for flights from Portugal to Illinois?
Prices for flights from Portugal to Illinois were last updated today.
How many operators does momondo search for flights from Portugal to Illinois?
The number of operators available for flights from Portugal to Illinois is 1 as of July 2026.
How old do you have to be to fly from Portugal to Illinois?
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 Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois 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 Illinois. 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 Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Portugal to Illinois is Airbus A330-900neo (39.53% of total bookings). The next most popular plane models are Airbus A330 (32.56%) and Airbus A330-200 (27.91%).

Best airlines flying from Portugal to Illinois

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

Airline	Rating	Free Cancellation	Price
TAP AIR PORTUGAL	PriceFrom $697	Free Cancellation	Rating 7.2 2,342 reviews		Search TAP AIR PORTUGAL flights

Why use momondo?

Why should I use momondo to find a flight deal from Portugal to Illinois?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portugal to Illinois. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Portugal.

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

If you are not ready to book a flight from Portugal to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.