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

Scandinavian Airlines, Icelandair, and TAP AIR PORTUGAL 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.

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 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.

How often are flights from Chicago to Portugal delayed?

Historically, on average around 43% 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 139 minutes.

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 61% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 17 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 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 November 2025, there are 17 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.

$200 Cheap Flights from Chicago to Portugal in 2025/26

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:20 pm - 4:45 pmORD-OPO

15h 25m1 stop

10:25 am - 5:45 pmOPO-ORD

36h 20m1 stop

$437Scandinavian Airlines

Find Deal

Sun, Mar 15 - Wed, Mar 25

7:20 pm - 10:00 amORD-FAO

32h 40m1 stop

10:50 am - 4:45 pmFAO-ORD

35h 55m1 stop

$440Scandinavian Airlines

Find Deal

Sun, Dec 7 - Tue, Dec 23

7:50 pm - 11:15 amORD-OPO

34h 25m1 stop

7:20 pm - 3:10 pmOPO-ORD

24h 50m2 stops

$454SWISS

Find Deal

Sun, Mar 15 - Wed, Mar 25

5:10 pm - 11:15 amORD-OPO

13h 05m1 stop

8:40 am - 3:55 pmOPO-ORD

13h 15m1 stop

$457SWISS

Find Deal

Tue, Mar 17 - Tue, Mar 31

6:05 pm - 9:20 amORD-LIS

57h 15m2 stops

11:20 am - 9:13 amLIS-ORD

27h 53m2 stops

$504Air Canada

Find Deal

Fri, Dec 5 - Tue, Dec 16

4:50 pm - 9:20 amORD-LIS

10h 30m1 stop

6:10 am - 2:10 pmLIS-ORD

14h 00m1 stop

$512United Airlines

Find Deal

Fri, Jan 9 - Tue, Jan 20

8:10 pm - 6:35 pmORD-PDL

18h 25m1 stop

6:30 am - 4:25 pmPDL-ORD

13h 55m1 stop

$557TAP AIR PORTUGAL

Find Deal

Wed, Mar 11 - Fri, Mar 20

7:10 pm - 11:45 pmORD-PDL

23h 35m1 stop

6:35 am - 3:00 pmPDL-ORD

13h 25m1 stop

$587TAP AIR PORTUGAL

Find Deal

Wed, Jan 7 - Wed, Jan 14

5:10 pm - 12:50 pmORD-FAO

13h 40m1 stop

6:20 pm - 2:50 pmFAO-ORD

25h 30m1 stop

$637British Airways

Find Deal

Fri, Mar 6 - Wed, Mar 11

9:15 pm - 10:20 amORD-FAO

31h 05m1 stop

8:00 pm - 3:55 pmFAO-ORD

25h 55m1 stop

$659British Airways

Find Deal

Sun, May 3 - Sat, May 9

Scandinavian Airlines flights from Chicago to Portugal

Our best Scandinavian Airlines deals on Chicago to Portugal flight tickets

Scandinavian Airlines

Mar 15

ORD8:20 pmChicago O'Hare Intl

15h 25m

1 stop

OPO4:45 pmPorto

Mar 25

OPO10:25 amPorto

36h 20m

1 stop

ORD5:45 pmChicago O'Hare Intl

$437

Find similar

Scandinavian Airlines

Dec 7

ORD7:20 pmChicago O'Hare Intl

32h 40m

1 stop

FAO10:00 amFaro

Dec 23

FAO10:50 amFaro

35h 55m

1 stop

ORD4:45 pmChicago O'Hare Intl

$440

Find similar

Scandinavian Airlines

Mar 15

ORD8:20 pmChicago O'Hare Intl

15h 25m

1 stop

OPO4:45 pmPorto

Mar 25

OPO10:25 amPorto

36h 20m

1 stop

ORD5:45 pmChicago O'Hare Intl

$462

Find similar

Air Canada flights from Chicago to Portugal

Our best Air Canada deals on Chicago to Portugal flight tickets

Air Canada

Feb 4

ORD3:35 pmChicago O'Hare Intl

15h 40m

2 stops

OPO1:15 pmPorto

Feb 11

OPO6:00 amPorto

32h 05m

2 stops

ORD8:05 amChicago O'Hare Intl

$483

Find similar

Air Canada

Feb 9

ORD7:15 amChicago O'Hare Intl

22h 50m

2 stops

OPO12:05 pmPorto

Feb 19

OPO6:00 amPorto

33h 13m

2 stops

ORD9:13 amChicago O'Hare Intl

$484

Find similar

Air Canada

Feb 8

ORD8:40 pmChicago O'Hare Intl

39h 55m

2 stops

OPO6:35 pmPorto

Feb 17

OPO6:00 amPorto

36h 09m

2 stops

ORD12:09 pmChicago O'Hare Intl

$491

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 3/15

8:20 pm-4:45 pm

1 stop15h 25m

Porto

Wed 3/25

10:25 am-5:45 pm

1 stop36h 20m

$437

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Sun 12/7

7:20 pm-10:00 am

1 stop32h 40m

Faro

Tue 12/23

10:50 am-4:45 pm

1 stop35h 55m

$440

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 3/15

7:50 pm-11:15 am

1 stop34h 25m

Porto

Wed 3/25

7:20 pm-3:10 pm

2 stops24h 50m

$454

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Tue 3/17

5:10 pm-11:15 am

1 stop13h 05m

Porto

Tue 3/31

8:40 am-3:55 pm

1 stop13h 15m

$457

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Fri 12/5

6:05 pm-9:20 am

2 stops57h 15m

Lisbon Humberto Delgado

Tue 12/16

11:20 am-9:13 am

2 stops27h 53m

$504

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Fri 1/9

4:50 pm-9:20 am

1 stop10h 30m

Lisbon Humberto Delgado

Tue 1/20

6:10 am-2:10 pm

1 stop14h 00m

$512

ChicagoPonta Delgada

ORD - PDL

ORDPDL

Chicago O'Hare Intl

Wed 3/11

8:10 pm-6:35 pm

1 stop18h 25m

Ponta Delgada Nordela

Fri 3/20

6:30 am-4:25 pm

1 stop13h 55m

$557

ChicagoPonta Delgada

ORD - PDL

ORDPDL

Chicago O'Hare Intl

Wed 1/7

7:10 pm-11:45 pm

1 stop23h 35m

Ponta Delgada Nordela

Wed 1/14

6:35 am-3:00 pm

1 stop13h 25m

$587

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Fri 3/6

5:10 pm-12:50 pm

1 stop13h 40m

Faro

Wed 3/11

6:20 pm-2:50 pm

1 stop25h 30m

$637

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Sun 5/3

9:15 pm-10:20 am

1 stop31h 05m

Faro

Sat 5/9

8:00 pm-3:55 pm

1 stop25h 55m

$659

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 $548, 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 $579.

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 $592. 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 $810.

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 $568. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $797 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 $769 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 $702 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 46% 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	$390
Fastest flight time	7h 55m
Direct flights	Mon, Thu and Sat
Airports in Portugal	1 airport

The best one-way flight to Portugal from Chicago in the past 72 hours is $390. The best round-trip flight deal from Chicago to Portugal found on momondo in the last 72 hours is $432.

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

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

There is 1 airport near Portugal: 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 November 2025, there are 17 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 21.18% of all bookings. The subsequent popular models are Airbus A330-300 at 17.33%, Boeing 787-8 Dreamliner at 15.94%, and Airbus A330-900neo at 13.33%.

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 1,589 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $425	Free Cancellation	Rating 7.0 581 reviews	Search Icelandair flights
Lufthansa	PriceFrom $441	Free Cancellation	Rating 6.8 7,594 reviews	Search Lufthansa flights
TAP AIR PORTUGAL	PriceFrom $468	Free Cancellation	Rating 7.1 2,074 reviews	Search TAP AIR PORTUGAL flights
Air France	PriceFrom $470	Free Cancellation	Rating 7.4 1,497 reviews	Search Air France flights
Iberia	PriceFrom $487	Free Cancellation	Rating 7.0 3,034 reviews	Search Iberia flights
SWISS	PriceFrom $489	Free Cancellation	Rating 7.5 1,794 reviews	Search SWISS flights
Aer Lingus	PriceFrom $494	Free Cancellation	Rating 7.2 1,381 reviews	Search Aer Lingus flights
British Airways	PriceFrom $504	Free Cancellation	Rating 6.7 7,539 reviews	Search British Airways flights
American Airlines	PriceFrom $506	Free Cancellation	Rating 7.2 11,038 reviews	Search American Airlines 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 $315

Flights to Portofrom $350

Flights to Funchalfrom $423

Flights to Farofrom $400

Flights to Ponta Delgadafrom $405

Flights to Lajesfrom $506

Flights to Hortafrom $569

Flights to Pico Islandfrom $545

Flights to Porto Santofrom $791

Flights to Velasfrom $572

Cheap flights from Chicago to Portugal from $200

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 1/12. 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

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Chicago to Portugal

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Scandinavian Airlines flights from Chicago to Portugal

Our best Scandinavian Airlines 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.

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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

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 $568. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $797 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 46% on your flight if you consider stops on a Chicago to Portugal flight.

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

Scandinavian Airlines, Icelandair, and TAP AIR PORTUGAL 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 43% 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 139 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.

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