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

Iberia, Icelandair, and Air France are the most popular carriers operating from Chicago to Portugal

What day of the week experiences the fewest flight delays on this route?

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

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

As of December 2025, there are 2 flights per week flying from Chicago to Portugal. The most common day of the week flights depart is Fri, with 100% of flights taking off on this day.

What is the most punctual flight time for Chicago to Portugal flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Which airline has the best punctuality record on Chicago to Portugal flights?

According to our data, TAP AIR PORTUGAL have had the least number of delays on this route over the last 12 months; with about 42% of their flights experiencing any sort of delay.

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 Chicago according to our data. TAP AIR PORTUGAL is the first choice among our users, with 60% 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.

How often are flights from Chicago to Portugal delayed?

Historically, on average around 42% of flights between Chicago and Portugal have experienced a delay on any given week. The average delay length over the past 12 months has been 138 minutes.

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

Prices for flights from Chicago to Portugal refresh daily.

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

As of December 2025, there are 18 operators available to choose from for flights from Chicago to Portugal.

How old do you have to be to fly from Chicago 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 Chicago 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.

$255 Cheap Flights from Chicago to Portugal in 2025/26

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Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

3:45 pm - 6:30 pm

ORD

OPO

20h 45m2 stops

12:05 pm - 12:45 pm

OPO

ORD

30h 40m1 stop

$442SWISS

Tue, Feb 24 - Tue, Mar 3

5:55 pm - 12:05 pm

ORD

OPO

12h 10m1 stop

1:45 pm - 6:25 pm

OPO

ORD

34h 40m1 stop

$456Multiple Airlines

Mon, Jan 19 - Mon, Jan 26

7:10 pm - 10:00 pm

ORD

OPO

20h 50m1 stop

6:55 am - 3:00 pm

OPO

ORD

14h 05m1 stop

$472TAP AIR PORTUGAL

Wed, Feb 4 - Wed, Feb 11

8:25 pm - 11:50 pm

ORD

FAO

21h 25m1 stop

6:05 am - 2:45 pm

FAO

ORD

14h 40m1 stop

$484TAP AIR PORTUGAL

Sun, Feb 1 - Sun, Feb 8

5:39 pm - 3:10 pm

ORD

LIS

16h 31m2 stops

5:00 am - 2:30 pm

LIS

ORD

15h 30m1 stop

$490Delta

Mon, Mar 23 - Wed, Apr 1

1:57 pm - 3:10 pm

ORD

LIS

19h 13m2 stops

11:25 am - 2:20 pm

LIS

ORD

32h 55m1 stop

$491Delta

Tue, Jan 6 - Thu, Jan 15

5:59 pm - 9:30 am

ORD

FNC

33h 31m2 stops

10:20 am - 2:20 pm

FNC

ORD

34h 00m1 stop

$498KLM

Tue, Jan 13 - Thu, Jan 22

4:25 pm - 9:35 am

ORD

FNC

35h 10m1 stop

10:25 am - 4:55 pm

FNC

ORD

36h 30m2 stops

$503KLM

Mon, Feb 2 - Mon, Feb 9

6:25 pm - 5:30 pm

ORD

FAO

17h 05m2 stops

7:40 pm - 2:50 pm

FAO

ORD

24h 10m1 stop

$601American Airlines

Wed, Jan 14 - Thu, Mar 12

6:25 pm - 5:30 pm

ORD

FAO

17h 05m2 stops

7:40 pm - 6:00 pm

FAO

ORD

27h 20m1 stop

$602American Airlines

Wed, Jan 14 - Thu, Mar 12

Delta flights from Chicago to Portugal

Our best Delta deals on Chicago to Portugal flight tickets

Delta

Mar 23

ORD5:39 pmChicago O'Hare Intl

16h 31m

2 stops

LIS3:10 pmLisbon Humberto Delgado

Mar 31

LIS11:55 amLisbon Humberto Delgado

32h 35m

1 stop

ORD2:30 pmChicago O'Hare Intl

$490

Find similar

Delta

Jan 6

ORD2:30 pmChicago O'Hare Intl

18h 40m

2 stops

LIS3:10 pmLisbon Humberto Delgado

Jan 14

LIS5:00 amLisbon Humberto Delgado

15h 20m

1 stop

ORD2:20 pmChicago O'Hare Intl

$491

Find similar

Delta

Jan 7

ORD4:25 pmChicago O'Hare Intl

12h 10m

1 stop

LIS10:35 amLisbon Humberto Delgado

Jan 14

LIS5:00 amLisbon Humberto Delgado

15h 20m

1 stop

ORD2:20 pmChicago O'Hare Intl

$492

Find similar

Air Canada flights from Chicago to Portugal

Our best Air Canada deals on Chicago to Portugal flight tickets

Air Canada

Jan 3

ORD8:40 pmChicago O'Hare Intl

30h 40m

1 stop

LIS9:20 amLisbon Humberto Delgado

Jan 16

LIS11:20 amLisbon Humberto Delgado

35h 36m

2 stops

ORD4:56 pmChicago O'Hare Intl

$492

Find similar

Air Canada

Jan 14

ORD7:15 amChicago O'Hare Intl

20h 05m

2 stops

LIS9:20 amLisbon Humberto Delgado

Jan 23

LIS11:20 amLisbon Humberto Delgado

31h 55m

2 stops

ORD1:15 pmChicago O'Hare Intl

$496

Find similar

Air Canada

Jan 3

ORD8:40 pmChicago O'Hare Intl

30h 40m

1 stop

LIS9:20 amLisbon Humberto Delgado

Jan 15

LIS11:20 amLisbon Humberto Delgado

26h 45m

2 stops

ORD8:05 amChicago O'Hare Intl

$502

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Tue 2/24

3:45 pm-6:30 pm

2 stops20h 45m

Porto

Tue 3/3

12:05 pm-12:45 pm

1 stop30h 40m

$442

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 1/19

5:55 pm-12:05 pm

1 stop12h 10m

Porto

Mon 1/26

1:45 pm-6:25 pm

1 stop34h 40m

$456

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 2/4

7:10 pm-10:00 pm

1 stop20h 50m

Porto

Wed 2/11

6:55 am-3:00 pm

1 stop14h 05m

$472

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Sun 2/1

8:25 pm-11:50 pm

1 stop21h 25m

Faro

Sun 2/8

6:05 am-2:45 pm

1 stop14h 40m

$484

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Mon 3/23

5:39 pm-3:10 pm

2 stops16h 31m

Lisbon Humberto Delgado

Wed 4/1

5:00 am-2:30 pm

1 stop15h 30m

$490

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Tue 1/6

1:57 pm-3:10 pm

2 stops19h 13m

Lisbon Humberto Delgado

Thu 1/15

11:25 am-2:20 pm

1 stop32h 55m

$491

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

Tue 1/13

5:59 pm-9:30 am

2 stops33h 31m

Funchal Madeira

Thu 1/22

10:20 am-2:20 pm

1 stop34h 00m

$498

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

Mon 2/2

4:25 pm-9:35 am

1 stop35h 10m

Funchal Madeira

Mon 2/9

10:25 am-4:55 pm

2 stops36h 30m

$503

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Wed 1/14

6:25 pm-5:30 pm

2 stops17h 05m

Faro

Thu 3/12

7:40 pm-2:50 pm

1 stop24h 10m

$601

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Wed 1/14

6:25 pm-5:30 pm

2 stops17h 05m

Faro

Thu 3/12

7:40 pm-6:00 pm

1 stop27h 20m

$602

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 Chicago 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

Delays

Other information

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Chicago is in February. Flight prices, which tend to average around $555, 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 Chicago during January instead. Flights to Portugal in January, while not as cheap as those in February, still average around $569.

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 Chicago. The lowest ticket price found for a Wednesday departure recently was $590. 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 Saturday, with ticket prices averaging around $807.

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 Chicago to Portugal during this time can be as low as $576. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $800 per ticket.

What is the cheapest Chicago to Portugal flight route?

Fly from Chicago O'Hare Intl to Lisbon Humberto Delgado for the best Chicago - 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 Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $771 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Chicago for as low as $695 on momondo.

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

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

You could potentially save up to 43% on your flight if you consider stops on a Chicago to Portugal flight.

Cheap Chicago to Portugal flight deals and tips

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

Best Price Found	$374
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 Chicago in the past 72 hours is $374. The best round-trip flight deal from Chicago to Portugal found on momondo in the last 72 hours is $450.

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

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

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

Search flight deals

When did momondo last update prices for flights from Chicago to Portugal?
Prices for flights from Chicago to Portugal refresh daily.
How many operators does momondo search for flights from Chicago to Portugal?
As of December 2025, there are 18 operators available to choose from for flights from Chicago to Portugal.
How old do you have to be to fly from Chicago 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 Chicago 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 Chicago to Portugal?
momondo data reveals that the most frequently booked plane model on the route from Chicago to Portugal is Boeing 787 Dreamliner, representing 22.80% of all bookings. The subsequent popular models are Airbus A330-300 at 17.43%, Boeing 787-8 Dreamliner at 16.69%, and Airbus A330 at 11.29%.

Best airlines flying from Chicago to Portugal

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

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $369	Free Cancellation	Rating 7.4 1,618 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $396	Free Cancellation	Rating 7.0 592 reviews	Search Icelandair flights
Lufthansa	PriceFrom $441	Free Cancellation	Rating 6.8 7,639 reviews	Search Lufthansa flights
Air France	PriceFrom $470	Free Cancellation	Rating 7.4 1,509 reviews	Search Air France flights
TAP AIR PORTUGAL	PriceFrom $480	Free Cancellation	Rating 7.2 2,092 reviews	Search TAP AIR PORTUGAL flights
Iberia	PriceFrom $488	Free Cancellation	Rating 7.0 3,055 reviews	Search Iberia flights
SWISS	PriceFrom $489	Free Cancellation	Rating 7.5 1,817 reviews	Search SWISS flights
Aer Lingus	PriceFrom $494	Free Cancellation	Rating 7.2 1,406 reviews	Search Aer Lingus flights
Virgin Atlantic	PriceFrom $503	Free Cancellation	Rating 7.5 675 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom $504	Free Cancellation	Rating 6.7 7,600 reviews	Search British Airways flights

Why use momondo?

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

Finding the right flight to Portugal from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portugal quick and easy, saving you time and money.

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

All flight searches from Chicago to Portugal on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Chicago and Portugal 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 Chicago 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 Chicago 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.

Start using Trips

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Find better results for your trip to Portugal

Popular cities in Portugal

Flights to Lisbonfrom $385

Flights to Portofrom $348

Flights to Funchalfrom $423

Flights to Farofrom $422

Flights to Ponta Delgadafrom $404

Flights to Lajesfrom $488

Flights to Hortafrom $576

Flights to Pico Islandfrom $564

Flights to Porto Santofrom $552

Flights to Velasfrom $575

Cheap flights from Chicago to Portugal from $254

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Portugal departing on 3/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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Find the cheapest flights from Chicago to Portugal

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Delta flights from Chicago to Portugal

Our best Delta deals on Chicago to Portugal flight tickets

Air Canada flights from Chicago to Portugal

Our best Air Canada deals on Chicago to Portugal flight tickets

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

See travel insights to Portugal from

How to get the cheapest flight ticket from Chicago 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?

Our most recent data shows that the best time of day to fly to Portugal is in the evening. Flights from Chicago to Portugal during this time can be as low as $576. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $800 per ticket.

What is the cheapest Chicago to Portugal flight route?

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

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

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

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

You could potentially save up to 43% on your flight if you consider stops on a Chicago to Portugal flight.

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

Iberia, Icelandair, and Air France are the most popular carriers operating from Chicago to Portugal

What airlines fly to Portugal?

How often are flights from Chicago to Portugal delayed?

Historically, on average around 42% of flights between Chicago and Portugal have experienced a delay on any given week. The average delay length over the past 12 months has been 138 minutes.

What is the most punctual flight time for Chicago to Portugal flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Chicago to Portugal flights?

According to our data, TAP AIR PORTUGAL have had the least number of delays on this route over the last 12 months; with about 42% of their flights experiencing any sort of delay.

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

As of December 2025, there are 2 flights per week flying from Chicago to Portugal. The most common day of the week flights depart is Fri, with 100% of flights taking off on this day.

Cheap Chicago to Portugal flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Portugal

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

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

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

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

What is the most popular plane model from Chicago to Portugal?

Best airlines flying from Chicago to Portugal

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

Why use momondo?

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

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

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

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

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