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

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

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

WestJet, British Airways, 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 June 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.

$346 Cheap Flights from Portugal to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

4:55 pm - 4:45 pm

LIS

ORD

29h 50m

1 stop

7:15 pm - 4:05 pm

ORD

LIS

14h 50m

1 stop

$627Scandinavian Airlines

Tue, Nov 3 - Sun, Nov 8

5:50 pm - 4:45 pm

OPO

ORD

28h 55m

1 stop

7:15 pm - 11:05 am

ORD

OPO

33h 50m

1 stop

$632Scandinavian Airlines

Thu, Nov 5 - Mon, Nov 9

6:35 am - 2:25 pm

LIS

ORD

13h 50m

1 stop

6:30 pm - 7:40 pm

ORD

LIS

19h 10m

2 stops

$700Multiple Airlines

Fri, Oct 16 - Tue, Nov 3

6:35 am - 2:25 pm

LIS

ORD

13h 50m

1 stop

6:30 pm - 7:40 pm

ORD

LIS

19h 10m

2 stops

$740Multiple Airlines

Sun, Oct 18 - Tue, Nov 3

7:20 am - 3:55 pm

LIS

ORD

14h 35m

1 stop

6:10 pm - 12:10 pm

ORD

LIS

13h 00m

1 stop

$768British Airways

Thu, Oct 15 - Thu, Oct 29

8:20 am - 2:55 pm

OPO

ORD

12h 35m

1 stop

3:08 pm - 11:45 am

ORD

OPO

14h 37m

2 stops

$816American Airlines

Thu, Nov 5 - Mon, Nov 9

8:20 am - 2:25 pm

OPO

ORD

12h 05m

1 stop

4:55 pm - 4:00 pm

ORD

OPO

17h 05m

1 stop

$818American Airlines

Wed, Sep 2 - Mon, Sep 21

6:10 pm - 4:00 pm

FAO

ORD

27h 50m

1 stop

6:00 pm - 11:50 pm

ORD

FAO

23h 50m

1 stop

$831TAP AIR PORTUGAL

Thu, Sep 3 - Fri, Oct 9

6:05 am - 12:40 pm

FAO

ORD

12h 35m

1 stop

6:00 pm - 10:25 am

ORD

FAO

10h 25m

1 stop

$832TAP AIR PORTUGAL

Thu, Sep 3 - Fri, Oct 9

11:05 am - 11:32 pm

LIS

STL

18h 27m

1 stop

11:15 am - 9:05 am

STL

LIS

15h 50m

1 stop

$1,177British Airways

Thu, Jul 16 - Thu, Jul 23

Delta flights from Portugal to Illinois

Our best Delta deals on Portugal to Illinois flight tickets

Delta

Sep 4

OPO5:00 amPorto

15h 15m

1 stop

ORD2:15 pmChicago O'Hare Intl

Sep 13

ORD10:40 amChicago O'Hare Intl

17h 45m

1 stop

OPO10:25 amPorto

$876

Delta

Jun 9

OPO5:00 amPorto

15h 15m

1 stop

ORD2:15 pmChicago O'Hare Intl

Jun 16

ORD7:17 pmChicago O'Hare Intl

14h 13m

2 stops

OPO3:30 pmPorto

$878

Delta

Jun 11

OPO5:00 amPorto

21h 31m

2 stops

ORD8:31 pmChicago O'Hare Intl

Jun 24

ORD11:30 amChicago O'Hare Intl

17h 10m

2 stops

OPO10:40 amPorto

$881

KLM flights from Portugal to Illinois

Our best KLM deals on Portugal to Illinois flight tickets

KLM

Sep 2

FAO8:50 amFaro

35h 25m

1 stop

ORD2:15 pmChicago O'Hare Intl

Oct 14

ORD5:20 pmChicago O'Hare Intl

20h 10m

2 stops

FAO7:30 pmFaro

$884

KLM

Sep 3

FAO8:30 amFaro

17h 57m

2 stops

ORD8:27 pmChicago O'Hare Intl

Oct 9

ORD4:20 pmChicago O'Hare Intl

34h 10m

1 stop

FAO8:30 amFaro

$886

KLM

Jun 9

OPO11:30 amPorto

33h 00m

1 stop

ORD2:30 pmChicago O'Hare Intl

Jun 16

ORD6:05 amChicago O'Hare Intl

22h 25m

1 stop

OPO10:30 amPorto

$916

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Tue 11/3

4:55 pm-4:45 pm

1 stop29h 50m

Chicago O'Hare Intl

Sun 11/8

7:15 pm-4:05 pm

1 stop14h 50m

$627

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 11/5

5:50 pm-4:45 pm

1 stop28h 55m

Chicago O'Hare Intl

Mon 11/9

7:15 pm-11:05 am

1 stop33h 50m

$632

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 10/16

6:35 am-2:25 pm

1 stop13h 50m

Chicago O'Hare Intl

Tue 11/3

6:30 pm-7:40 pm

2 stops19h 10m

$700

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sun 10/18

6:35 am-2:25 pm

1 stop13h 50m

Chicago O'Hare Intl

Tue 11/3

6:30 pm-7:40 pm

2 stops19h 10m

$740

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Thu 10/15

7:20 am-3:55 pm

1 stop14h 35m

Chicago O'Hare Intl

Thu 10/29

6:10 pm-12:10 pm

1 stop13h 00m

$768

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 11/5

8:20 am-2:55 pm

1 stop12h 35m

Chicago O'Hare Intl

Mon 11/9

3:08 pm-11:45 am

2 stops14h 37m

$816

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 9/2

8:20 am-2:25 pm

1 stop12h 05m

Chicago O'Hare Intl

Mon 9/21

4:55 pm-4:00 pm

1 stop17h 05m

$818

FaroChicago

FAO - ORD

FAOORD

Faro

Thu 9/3

6:10 pm-4:00 pm

1 stop27h 50m

Chicago O'Hare Intl

Fri 10/9

6:00 pm-11:50 pm

1 stop23h 50m

$831

Quickest round-trip

FaroChicago

FAO - ORD

FAOORD

Faro

Thu 9/3

6:05 am-12:40 pm

1 stop12h 35m

Chicago O'Hare Intl

Fri 10/9

6:00 pm-10:25 am

1 stop10h 25m

$832

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Thu 7/16

11:05 am-11:32 pm

1 stop18h 27m

Lambert-St Louis

Thu 7/23

11:15 am-9:05 am

1 stop15h 50m

$1,177

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 November. Flight prices, which tend to average around $420, 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 November, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $467.

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

The cheapest day to depart from Portugal to Illinois is on a Thursday when prices can be found for as low as $748. Flights from Portugal to Illinois on a Friday will generally be more expensive and average around $1,205. 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 in the morning. Flights from Portugal to Illinois during this time can be as low as $1,056. Flights at noon are often more expensive with an average ticket price of $1,111.

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 3 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?

No. A direct flight is the cheapest option for a flight between Portugal to Illinois.

Cheap Portugal to Illinois flight deals and tips

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

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

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 June 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 (50.00% of total bookings). The next most popular plane models are Airbus A330 (35.71%) and Airbus A330-200 (14.29%).

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 $665	Free Cancellation	Rating 7.2 2,272 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.