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

Air Canada, United Airlines, and American Airlines are the most popular carriers operating from Illinois to Portugal

How long is the flight from Illinois to Portugal?

Average flight duration from Illinois to Portugal depends on which airport you fly into and out of. Flying from Chicago to Lisbon is 10h 42m on average, while flying from Peoria to Lisbon is 31h on average. Lisbon is the most popular airport in Portugal.

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

As of March 2026, 2 flights take off from Illinois and land in Portugal each week. The most common flight departure day for this route is Wed, with 100% of weekly flights taking off on this day.

What airlines fly to Portugal?

TAP AIR PORTUGAL, United Airlines and British Airways are the top three most popular airlines that fly to Portugal from Illinois according to our data. TAP AIR PORTUGAL is the first choice among our users, with 61% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 18 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Illinois to Portugal are updated daily.

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

As of March 2026, there are 18 operators available to choose from for flights from Illinois to Portugal.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Portugal.

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

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

$223 Cheap Flights from Illinois to Portugal in 2026

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Find the cheapest flights from Illinois to Portugal

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:15 pm - 5:40 pm

ORD

OPO

16h 25m

1 stop

5:55 pm - 4:10 pm

OPO

ORD

28h 15m

1 stop

$443Scandinavian Airlines

Sat, Apr 18 - Fri, May 1

7:15 pm - 10:05 pm

ORD

LIS

20h 50m

1 stop

9:15 pm - 4:10 pm

LIS

ORD

24h 55m

1 stop

$490Scandinavian Airlines

Fri, Apr 17 - Fri, May 1

10:25 pm - 11:25 pm

ORD

OPO

19h 00m

2 stops

7:10 am - 6:15 pm

OPO

ORD

17h 05m

2 stops

$500Multiple Airlines

Fri, Apr 17 - Tue, Apr 21

7:15 pm - 9:00 am

ORD

LIS

31h 45m

1 stop

9:15 pm - 4:10 pm

LIS

ORD

24h 55m

1 stop

$519Scandinavian Airlines

Sat, Apr 25 - Fri, May 8

9:25 pm - 6:05 pm

ORD

OPO

15h 40m

1 stop

6:00 pm - 4:00 pm

OPO

ORD

28h 00m

1 stop

$523TAP AIR PORTUGAL

Sun, Mar 22 - Tue, Mar 31

7:15 pm - 3:35 pm

ORD

LIS

14h 20m

1 stop

9:15 pm - 10:06 pm

LIS

ORD

30h 51m

2 stops

$530Multiple Airlines

Tue, Sep 8 - Tue, Sep 15

6:00 pm - 10:25 am

ORD

FAO

10h 25m

1 stop

6:05 am - 4:00 pm

FAO

ORD

15h 55m

1 stop

$535TAP AIR PORTUGAL

Wed, Apr 22 - Wed, Apr 29

8:10 pm - 9:45 am

ORD

OPO

31h 35m

1 stop

4:50 pm - 9:40 am

OPO

ORD

22h 50m

1 stop

$578Turkish Airlines

Mon, Apr 13 - Tue, Apr 21

7:16 pm - 6:45 pm

MDW

LIS

17h 29m

2 stops

5:00 am - 6:36 pm

LIS

MDW

19h 36m

2 stops

$625Delta

Mon, Apr 13 - Tue, Apr 21

6:25 am - 8:00 am

STL

LIS

19h 35m

1 stop

11:55 am - 11:36 pm

LIS

STL

17h 41m

2 stops

$666Delta

Tue, Apr 14 - Tue, Apr 21

American Airlines flights from Illinois to Portugal

Our best American Airlines deals on Illinois to Portugal flight tickets

American Airlines

Apr 7

STL8:03 pmLambert-St Louis

15h 52m

2 stops

LIS5:55 pmLisbon Humberto Delgado

Apr 14

LIS11:05 amLisbon Humberto Delgado

14h 24m

1 stop

STL7:29 pmLambert-St Louis

$689

American Airlines

May 3

STL9:40 pmLambert-St Louis

19h 25m

1 stop

LIS11:05 pmLisbon Humberto Delgado

May 10

LIS6:35 amLisbon Humberto Delgado

18h 58m

2 stops

STL7:33 pmLambert-St Louis

$728

Finnair flights from Illinois to Portugal

Our best Finnair deals on Illinois to Portugal flight tickets

Finnair

Apr 22

STL12:27 pmLambert-St Louis

28h 58m

2 stops

LIS11:25 pmLisbon Humberto Delgado

Apr 29

LIS6:35 amLisbon Humberto Delgado

21h 42m

2 stops

STL10:17 pmLambert-St Louis

$698

Finnair

May 3

STL5:21 pmLambert-St Louis

24h 04m

2 stops

LIS11:25 pmLisbon Humberto Delgado

May 10

LIS6:35 amLisbon Humberto Delgado

21h 44m

2 stops

STL10:19 pmLambert-St Louis

$744

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sat 4/18

7:15 pm-5:40 pm

1 stop16h 25m

Porto

Fri 5/1

5:55 pm-4:10 pm

1 stop28h 15m

$443

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Fri 4/17

7:15 pm-10:05 pm

1 stop20h 50m

Lisbon Humberto Delgado

Fri 5/1

9:15 pm-4:10 pm

1 stop24h 55m

$490

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Fri 4/17

10:25 pm-11:25 pm

2 stops19h 00m

Porto

Tue 4/21

7:10 am-6:15 pm

2 stops17h 05m

$500

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Sat 4/25

7:15 pm-9:00 am

1 stop31h 45m

Lisbon Humberto Delgado

Fri 5/8

9:15 pm-4:10 pm

1 stop24h 55m

$519

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 3/22

9:25 pm-6:05 pm

1 stop15h 40m

Porto

Tue 3/31

6:00 pm-4:00 pm

1 stop28h 00m

$523

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Tue 9/8

7:15 pm-3:35 pm

1 stop14h 20m

Lisbon Humberto Delgado

Tue 9/15

9:15 pm-10:06 pm

2 stops30h 51m

$530

Quickest round-trip

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Wed 4/22

6:00 pm-10:25 am

1 stop10h 25m

Faro

Wed 4/29

6:05 am-4:00 pm

1 stop15h 55m

$535

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 4/13

8:10 pm-9:45 am

1 stop31h 35m

Porto

Tue 4/21

4:50 pm-9:40 am

1 stop22h 50m

$578

ChicagoLisbon

MDW - LIS

MDWLIS

Chicago Midway

Mon 4/13

7:16 pm-6:45 pm

2 stops17h 29m

Lisbon Humberto Delgado

Tue 4/21

5:00 am-6:36 pm

2 stops19h 36m

$625

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Tue 4/14

6:25 am-8:00 am

1 stop19h 35m

Lisbon Humberto Delgado

Tue 4/21

11:55 am-11:36 pm

2 stops17h 41m

$666

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 Illinois to Portugal

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 Portugal?

The cheapest month to fly to Portugal from Illinois is in February. Flight prices, which tend to average around $509, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Portugal from Illinois during January instead. Flights to Portugal in January, while not as cheap as those in February, still average around $578.

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

According to our data, Wednesday is the cheapest day to fly to Portugal from Illinois. The lowest ticket price found for a Wednesday departure recently was $566. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Thursday, with ticket prices averaging around $777.

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

Our most recent data shows that the best time of day to fly to Portugal is in the evening. Flights from Illinois to Portugal during this time can be as low as $579. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $764 per ticket.

What is the cheapest Illinois to Portugal flight route?

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

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $770 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Illinois for as low as $713 on momondo.

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

There are 3 cabin classes available to choose from on Illinois to Portugal 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 Illinois to Portugal flights?

You could potentially save up to 36% on your flight if you consider stops on a Illinois to Portugal flight.

Cheap Illinois to Portugal flight deals and tips

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

Best Price Found	$427
Fastest flight time	7h 55m
Direct flights	Mon, Thu, Sat and Sun
Airports in Portugal	99 airports

The best one-way flight to Portugal from Illinois in the past 72 hours is $427. The best round-trip flight deal from Illinois to Portugal found on momondo in the last 72 hours is $591.

The fastest flight from Illinois to Portugal takes 7h 55m

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

There are 99 airports in Portugal. From Illinois there are direct flights to Lisbon Humberto Delgado (LIS).

Search flight deals

When did momondo last update prices for flights from Illinois to Portugal?
Prices for flights from Illinois to Portugal are updated daily.
How many operators does momondo search for flights from Illinois to Portugal?
As of March 2026, there are 18 operators available to choose from for flights from Illinois to Portugal.
How old do you have to be to fly from Illinois to Portugal?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Portugal.
What documentation or ID do you need to fly to Portugal?
The required travel and health documents for your Portugal 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 Portugal. 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 Illinois to Portugal?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Portugal is Boeing 787 Dreamliner, representing 25.41% of all bookings. The subsequent popular models are Boeing 787-8 Dreamliner at 15.42%, Airbus A330-300 at 12.76%, and Airbus A330-900neo at 12.35%.

Best airlines flying from Illinois to Portugal

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

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $369	Free Cancellation	Rating 7.3 1,712 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $371	Free Cancellation	Rating 7.1 620 reviews	Search Icelandair flights
TAP AIR PORTUGAL	PriceFrom $450	Free Cancellation	Rating 7.1 2,166 reviews	Search TAP AIR PORTUGAL flights
Air France	PriceFrom $470	Free Cancellation	Rating 7.4 1,544 reviews	Search Air France flights
Lufthansa	PriceFrom $483	Free Cancellation	Rating 6.8 7,846 reviews	Search Lufthansa flights
SWISS	PriceFrom $489	Free Cancellation	Rating 7.5 1,897 reviews	Search SWISS flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.9 8,284 reviews	Search Delta flights
Iberia	PriceFrom $496	Free Cancellation	Rating 7.0 3,133 reviews	Search Iberia flights
Aer Lingus	PriceFrom $497	Free Cancellation	Rating 7.2 1,475 reviews	Search Aer Lingus flights
Virgin Atlantic	PriceFrom $503	Free Cancellation	Rating 7.5 680 reviews	Search Virgin Atlantic flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Portugal for you.

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

Flights from Illinois to Portugal with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential Illinois to Portugal flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Portugal, momondo offers a useful price alert feature which will track prices for flights to Portugal from Illinois and alert you when they change.

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Popular cities

Other flights from Illinois

Other flights to Portugal

Airlines

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Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $435

Flights to Portofrom $427

Flights to Funchalfrom $499

Flights to Farofrom $446

Flights to Ponta Delgadafrom $530

Flights to Lajesfrom $550

Flights to Pico Islandfrom $568

Flights to Hortafrom $602

Flights to Porto Santofrom $765

Flights to Velasfrom $613

Cheap flights from Illinois to Portugal from $223

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Portugal departing on 5/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find the cheapest flights from Illinois to Portugal

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American Airlines flights from Illinois to Portugal

Our best American Airlines deals on Illinois to Portugal flight tickets

Finnair flights from Illinois to Portugal

Our best Finnair deals on Illinois to Portugal flight tickets

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Use the filters below to find and compare flights from Illinois to Portugal that are best for you.

See travel insights to Portugal from

How to get the cheapest flight ticket from Illinois to Portugal

What is the cheapest month to fly to Portugal?

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

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

What is the cheapest Illinois to Portugal flight route?

How far in advance should I book a flight to Portugal?

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

Can stopping save me money on Illinois to Portugal flights?

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

What airlines fly to Portugal?

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

How long is the flight from Illinois to Portugal?

Cheap Illinois to Portugal flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Portugal

Best airlines flying from Illinois to Portugal

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

Why use momondo?

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo

Illinois flight routes

According to popular flight searches on momondo this year

Portugal flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Portugal

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Portugal

List of cabin classes available on flights landing in Portugal. Availability may vary depending on flight origin and airline.

Complete your trip to Portugal

Explore popular destinations other users love

According to popular flight searches on momondo this year