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 is the cheapest airline that flies from Chicago O'Hare Intl to Portugal?

SWISS, KLM, and United Airlines are the most popular carriers operating from Chicago O'Hare Intl 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 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 O'Hare Intl Airport according to our data. TAP AIR PORTUGAL is the first choice among our users, with 59% 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 O'Hare Intl Airport to Portugal?

Prices for flights from Chicago O'Hare Intl Airport to Portugal are updated daily.

How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Portugal?

As of January 2026, there are 18 operators available to choose from for flights from Chicago O'Hare Intl Airport to Portugal.

How old do you have to be to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Portugal.

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

The travel and health documents you'll need for your trip to Portugal may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$222 Cheap Flights from Chicago O'Hare Intl Airport to Portugal in 2026

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Find the cheapest flights from Chicago O'Hare Intl Airport to Portugal

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:10 pm - 10:50 am

ORD

FAO

33h 40m

1 stop

11:40 am - 4:45 pm

FAO

ORD

35h 05m

1 stop

$405Scandinavian Airlines

Sun, Feb 8 - Tue, Feb 24

7:15 pm - 11:00 am

ORD

OPO

33h 45m

1 stop

5:55 pm - 4:10 pm

OPO

ORD

28h 15m

1 stop

$453Scandinavian Airlines

Mon, Apr 13 - Fri, Apr 17

7:10 pm - 6:00 pm

ORD

OPO

16h 50m

1 stop

5:00 am - 2:45 pm

OPO

ORD

15h 45m

1 stop

$461TAP AIR PORTUGAL

Wed, Jan 28 - Sun, Feb 1

7:10 pm - 3:05 pm

ORD

OPO

13h 55m

1 stop

6:55 am - 3:00 pm

OPO

ORD

14h 05m

1 stop

$462TAP AIR PORTUGAL

Wed, Feb 4 - Wed, Feb 11

8:15 pm - 11:50 pm

ORD

FAO

21h 35m

1 stop

6:05 am - 3:25 pm

FAO

ORD

15h 20m

1 stop

$471TAP AIR PORTUGAL

Fri, Feb 27 - Fri, Mar 6

7:10 pm - 11:50 pm

ORD

FAO

22h 40m

1 stop

6:05 am - 3:00 pm

FAO

ORD

14h 55m

1 stop

$472TAP AIR PORTUGAL

Wed, Feb 4 - Wed, Feb 11

9:40 am - 2:15 pm

ORD

FNC

22h 35m

2 stops

4:00 pm - 3:25 pm

FNC

ORD

29h 25m

1 stop

$487British Airways

Mon, Feb 23 - Wed, Mar 4

2:25 pm - 3:10 pm

ORD

LIS

18h 45m

2 stops

5:30 am - 5:53 pm

LIS

ORD

18h 23m

2 stops

$487Delta

Tue, Feb 17 - Thu, Mar 5

3:00 pm - 10:15 am

ORD

LIS

13h 15m

2 stops

12:15 pm - 8:05 pm

LIS

ORD

13h 50m

1 stop

$489United Airlines

Tue, Feb 24 - Sun, Mar 1

11:38 am - 2:15 pm

ORD

FNC

20h 37m

2 stops

4:00 pm - 1:50 pm

FNC

ORD

27h 50m

1 stop

$489British Airways

Mon, Feb 23 - Wed, Mar 4

Delta flights from Chicago O'Hare Intl Airport to Portugal

Our best Delta deals on Chicago O'Hare Intl Airport to Portugal flight tickets

Delta

Feb 17

ORD2:25 pmChicago O'Hare Intl

18h 45m

2 stops

LIS3:10 pmLisbon Humberto Delgado

Mar 5

LIS5:30 amLisbon Humberto Delgado

18h 23m

2 stops

ORD5:53 pmChicago O'Hare Intl

$487

Delta

Mar 4

ORD2:25 pmChicago O'Hare Intl

18h 10m

2 stops

LIS2:35 pmLisbon Humberto Delgado

Mar 10

LIS5:30 amLisbon Humberto Delgado

18h 04m

2 stops

ORD6:34 pmChicago O'Hare Intl

$500

Delta

Feb 10

ORD5:20 pmChicago O'Hare Intl

12h 00m

1 stop

LIS11:20 amLisbon Humberto Delgado

Feb 21

LIS5:00 amLisbon Humberto Delgado

15h 20m

1 stop

ORD2:20 pmChicago O'Hare Intl

$502

United Airlines flights from Chicago O'Hare Intl Airport to Portugal

Our best United Airlines deals on Chicago O'Hare Intl Airport to Portugal flight tickets

United Airlines

Feb 24

ORD3:00 pmChicago O'Hare Intl

13h 15m

2 stops

LIS10:15 amLisbon Humberto Delgado

Mar 1

LIS12:15 pmLisbon Humberto Delgado

13h 50m

1 stop

ORD8:05 pmChicago O'Hare Intl

$489

United Airlines

Feb 2

ORD3:35 pmChicago O'Hare Intl

10h 35m

1 stop

LIS8:10 amLisbon Humberto Delgado

Feb 28

LIS6:10 amLisbon Humberto Delgado

18h 15m

1 stop

ORD6:25 pmChicago O'Hare Intl

$503

United Airlines

Jan 23

ORD3:35 pmChicago O'Hare Intl

10h 35m

1 stop

LIS8:10 amLisbon Humberto Delgado

Jan 27

LIS10:15 amLisbon Humberto Delgado

15h 02m

2 stops

ORD7:17 pmChicago O'Hare Intl

$512

momondo Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Sun 2/8

7:10 pm-10:50 am

1 stop33h 40m

Faro

Tue 2/24

11:40 am-4:45 pm

1 stop35h 05m

$405

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 4/13

7:15 pm-11:00 am

1 stop33h 45m

Porto

Fri 4/17

5:55 pm-4:10 pm

1 stop28h 15m

$453

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 1/28

7:10 pm-6:00 pm

1 stop16h 50m

Porto

Sun 2/1

5:00 am-2:45 pm

1 stop15h 45m

$461

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 2/4

7:10 pm-3:05 pm

1 stop13h 55m

Porto

Wed 2/11

6:55 am-3:00 pm

1 stop14h 05m

$462

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Fri 2/27

8:15 pm-11:50 pm

1 stop21h 35m

Faro

Fri 3/6

6:05 am-3:25 pm

1 stop15h 20m

$471

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Wed 2/4

7:10 pm-11:50 pm

1 stop22h 40m

Faro

Wed 2/11

6:05 am-3:00 pm

1 stop14h 55m

$472

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

Mon 2/23

9:40 am-2:15 pm

2 stops22h 35m

Funchal Madeira

Wed 3/4

4:00 pm-3:25 pm

1 stop29h 25m

$487

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Tue 2/17

2:25 pm-3:10 pm

2 stops18h 45m

Lisbon Humberto Delgado

Thu 3/5

5:30 am-5:53 pm

2 stops18h 23m

$487

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Tue 2/24

3:00 pm-10:15 am

2 stops13h 15m

Lisbon Humberto Delgado

Sun 3/1

12:15 pm-8:05 pm

1 stop13h 50m

$489

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

Mon 2/23

11:38 am-2:15 pm

2 stops20h 37m

Funchal Madeira

Wed 3/4

4:00 pm-1:50 pm

1 stop27h 50m

$489

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 O'Hare Intl Airport 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 O'Hare Intl Airport is in January. Flight prices, which tend to average around $572, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from Chicago O'Hare Intl Airport during November instead. Flights to Portugal in November, while not as cheap as those in January, still average around $596.

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 O'Hare Intl Airport. The lowest ticket price found for a Wednesday departure recently was $582. 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 $803.

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 O'Hare Intl Airport to Portugal during this time can be as low as $585. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $790 per ticket.

What is the cheapest Chicago O'Hare Intl to Portugal flight route?

Fly from Chicago O'Hare Intl to Lisbon Humberto Delgado for the best Chicago O'Hare Intl - 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 O'Hare Intl Airport 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 O'Hare Intl Airport for as low as $685 on momondo.

What cabin class options are available on Chicago O'Hare Intl to Portugal flights?

There are 3 cabin classes available to choose from on Chicago O'Hare Intl 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 O'Hare Intl Airport to Portugal flights?

You could potentially save up to 66% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Portugal flight.

Cheap Chicago O'Hare Intl Airport to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Portugal

Best Price Found	$352
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 O'Hare Intl Airport in the past 72 hours is $352. The best round-trip flight deal from Chicago O'Hare Intl Airport to Portugal found on momondo in the last 72 hours is $493.

The fastest flight from Chicago O'Hare Intl Airport to Portugal takes 7h 55m

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

There are 99 airports in Portugal. From Chicago O'Hare Intl Airport there are direct flights to Lisbon Humberto Delgado (LIS).

Search flight deals

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Portugal?
Prices for flights from Chicago O'Hare Intl Airport to Portugal are updated daily.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Portugal?
As of January 2026, there are 18 operators available to choose from for flights from Chicago O'Hare Intl Airport to Portugal.
How old do you have to be to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents you'll need for your trip to Portugal may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Chicago O'Hare Intl Airport to Portugal?
Based on momondo bookings for flights between Chicago O'Hare Intl Airport and Portugal, the leading plane model is Boeing 787 Dreamliner, making up 25.15% of the total bookings. Other popular models include Boeing 787-8 Dreamliner with 16.56%, Airbus A330-300 with 13.94%, and Airbus A330-900neo with 11.38%.

Best airlines flying from Chicago O'Hare Intl Airport to Portugal

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Portugal with momondo

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $369	Free Cancellation	Rating 7.3 1,649 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $396	Free Cancellation	Rating 7.1 596 reviews	Search Icelandair flights
Lufthansa	PriceFrom $441	Free Cancellation	Rating 6.8 7,711 reviews	Search Lufthansa flights
Air France	PriceFrom $470	Free Cancellation	Rating 7.4 1,522 reviews	Search Air France flights
TAP AIR PORTUGAL	PriceFrom $480	Free Cancellation	Rating 7.1 2,119 reviews	Search TAP AIR PORTUGAL flights
Iberia	PriceFrom $488	Free Cancellation	Rating 7.0 3,086 reviews	Search Iberia flights
SWISS	PriceFrom $489	Free Cancellation	Rating 7.5 1,847 reviews	Search SWISS flights
Aer Lingus	PriceFrom $494	Free Cancellation	Rating 7.2 1,435 reviews	Search Aer Lingus flights
Virgin Atlantic	PriceFrom $503	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom $504	Free Cancellation	Rating 6.7 7,671 reviews	Search British Airways flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Portugal. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Portugal from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Chicago to Portugal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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.

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Find better results for your trip to Portugal

Popular cities in Portugal

Flights to Lisbonfrom $371

Flights to Portofrom $336

Flights to Funchalfrom $387

Flights to Farofrom $386

Flights to Ponta Delgadafrom $422

Flights to Lajesfrom $421

Flights to Hortafrom $490

Flights to Pico Islandfrom $470

Flights to Porto Santofrom $693

Flights to Velasfrom $482

Chicago O'Hare Intl Airport flight routes

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Flights from Chicago O'Hare Intl to Philadelphia

Flights from Chicago O'Hare Intl to Fort Myers SW Florida Intl

Flights from Chicago O'Hare Intl to Phoenix Sky Harbor Intl

Cheap flights from Chicago O'Hare Intl Airport to Portugal from $222

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Big names and deals

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Find the cheapest flights from Chicago O'Hare Intl Airport to Portugal

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Delta flights from Chicago O'Hare Intl Airport to Portugal

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United Airlines flights from Chicago O'Hare Intl Airport to Portugal

Our best United Airlines deals on Chicago O'Hare Intl Airport to Portugal flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Portugal that are best for you.

See travel insights to Portugal from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl to Portugal flight route?

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

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

What cabin class options are available on Chicago O'Hare Intl to Portugal flights?

There are 3 cabin classes available to choose from on Chicago O'Hare Intl 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 O'Hare Intl Airport to Portugal flights?

You could potentially save up to 66% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Portugal flight.

What is the cheapest airline that flies from Chicago O'Hare Intl to Portugal?

SWISS, KLM, and United Airlines are the most popular carriers operating from Chicago O'Hare Intl 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.

Cheap Chicago O'Hare Intl Airport to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Portugal

Best Price Found

Fastest flight time

Direct flights

Airports in Portugal

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Portugal?

How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Portugal?

How old do you have to be to fly from Chicago O'Hare Intl Airport to Portugal?

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

What is the most popular plane model from Chicago O'Hare Intl Airport to Portugal?

Best airlines flying from Chicago O'Hare Intl Airport to Portugal

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport 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