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Cheap flights from Portugal to Chicago from $340

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portugal to Chicago departing on 5/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portugal to Chicago

Recent round-trip flight deals from Portugal to Chicago

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
10:30 pm - 4:00 pm
OPO
-
ORD
23h 30m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 3:00 pm
ORD
-
OPO
14h 55m
1 stop
$611TAP AIR PORTUGAL
Thu, Apr 16 - Sat, May 2
TAP AIR PORTUGAL Logo
10:30 pm - 4:00 pm
OPO
-
ORD
23h 30m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 3:00 pm
ORD
-
OPO
14h 55m
1 stop
$613TAP AIR PORTUGAL
Thu, Apr 16 - Sat, May 2
TAP AIR PORTUGAL Logo
6:05 am - 4:00 pm
FAO
-
ORD
15h 55m
1 stop
TAP AIR PORTUGAL Logo
6:00 pm - 10:25 am
ORD
-
FAO
10h 25m
1 stop
$615TAP AIR PORTUGAL
Fri, Apr 24 - Fri, May 1
Aer Lingus Logo
10:15 pm - 2:00 pm
LIS
-
ORD
21h 45m
1 stop
Aer Lingus Logo
9:00 pm - 9:35 pm
ORD
-
LIS
18h 35m
1 stop
$661Aer Lingus
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
8:40 pm - 4:05 pm
OPO
-
ORD
25h 25m
2 stops
Multiple Airlines Logo
6:00 pm - 11:50 pm
ORD
-
OPO
23h 50m
2 stops
$662Multiple Airlines
Fri, Apr 17 - Wed, Apr 22
Multiple Airlines Logo
7:25 am - 12:24 am
LIS
-
ORD
46h 59m
3 stops
Multiple Airlines Logo
7:25 pm - 11:00 pm
ORD
-
LIS
21h 35m
2 stops
$670Multiple Airlines
Wed, Apr 15 - Mon, Apr 20
Scandinavian Airlines Logo
7:15 am - 4:10 pm
LIS
-
ORD
14h 55m
1 stop
Scandinavian Airlines Logo
7:15 pm - 3:50 pm
ORD
-
LIS
14h 35m
1 stop
$673Scandinavian Airlines
Wed, Apr 15 - Mon, Apr 20
Scandinavian Airlines Logo
9:15 pm - 4:10 pm
LIS
-
ORD
24h 55m
1 stop
Scandinavian Airlines Logo
7:15 pm - 10:05 pm
ORD
-
LIS
20h 50m
1 stop
$674Scandinavian Airlines
Fri, Apr 17 - Fri, May 1
Aer Lingus Logo
10:15 pm - 2:00 pm
LIS
-
ORD
21h 45m
1 stop
Aer Lingus Logo
9:00 pm - 9:35 pm
ORD
-
LIS
18h 35m
1 stop
$691Aer Lingus
Wed, Apr 15 - Mon, Apr 20
KLM Logo
9:15 pm - 2:15 pm
FAO
-
ORD
23h 00m
1 stop
KLM Logo
4:20 pm - 7:30 pm
ORD
-
FAO
21h 10m
1 stop
$811KLM
Fri, Apr 3 - Tue, Apr 7

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

Our best Scandinavian Airlines deals on Portugal to Chicago O'Hare Intl Airport flight tickets
Scandinavian Airlines
Apr 15
LIS7:15 amLisbon Humberto Delgado
14h 55m
1 stop
ORD4:10 pmChicago O'Hare Intl
Apr 20
ORD7:15 pmChicago O'Hare Intl
14h 35m
1 stop
LIS3:50 pmLisbon Humberto Delgado
$673
Scandinavian Airlines
Apr 17
LIS9:15 pmLisbon Humberto Delgado
24h 55m
1 stop
ORD4:10 pmChicago O'Hare Intl
May 1
ORD7:15 pmChicago O'Hare Intl
20h 50m
1 stop
LIS10:05 pmLisbon Humberto Delgado
$674
Scandinavian Airlines
Apr 15
LIS7:15 amLisbon Humberto Delgado
14h 55m
1 stop
ORD4:10 pmChicago O'Hare Intl
Apr 20
ORD7:15 pmChicago O'Hare Intl
14h 35m
1 stop
LIS3:50 pmLisbon Humberto Delgado
$677

TAP AIR PORTUGAL flights from Portugal to Chicago O'Hare Intl Airport

Our best TAP AIR PORTUGAL deals on Portugal to Chicago O'Hare Intl Airport flight tickets
TAP AIR PORTUGAL
Apr 16
OPO10:30 pmPorto
23h 30m
1 stop
ORD4:00 pmChicago O'Hare Intl
May 2
ORD6:05 pmChicago O'Hare Intl
14h 55m
1 stop
OPO3:00 pmPorto
$611
TAP AIR PORTUGAL
Apr 16
OPO10:30 pmPorto
23h 30m
1 stop
ORD4:00 pmChicago O'Hare Intl
May 2
ORD6:05 pmChicago O'Hare Intl
14h 55m
1 stop
OPO3:00 pmPorto
$613
TAP AIR PORTUGAL
Apr 16
OPO6:00 pmPorto
28h 00m
1 stop
ORD4:00 pmChicago O'Hare Intl
Apr 29
ORD6:00 pmChicago O'Hare Intl
31h 50m
1 stop
OPO7:50 amPorto
$615

momondo Fare Finder

 
Customize your flight search to find flights from Portugal to Chicago O'Hare Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 14, 2026.
Use the filters below to find and compare flights from Portugal to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/16

10:30 pm-4:00 pm

1 stop23h 30m

Chicago O'Hare Intl

Sat 5/2

6:05 pm-3:00 pm

1 stop14h 55m

$611

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/16

10:30 pm-4:00 pm

1 stop23h 30m

Chicago O'Hare Intl

Sat 5/2

6:05 pm-3:00 pm

1 stop14h 55m

$613
Quickest round-trip

FaroChicago

FAO - ORD

FAOORD

Faro

Fri 4/24

6:05 am-4:00 pm

1 stop15h 55m

Chicago O'Hare Intl

Fri 5/1

6:00 pm-10:25 am

1 stop10h 25m

$615

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Tue 4/14

10:15 pm-2:00 pm

1 stop21h 45m

Chicago O'Hare Intl

Tue 4/21

9:00 pm-9:35 pm

1 stop18h 35m

$661

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 4/17

8:40 pm-4:05 pm

2 stops25h 25m

Chicago O'Hare Intl

Wed 4/22

6:00 pm-11:50 pm

2 stops23h 50m

$662

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Wed 4/15

7:25 am-12:24 am

3 stops46h 59m

Chicago O'Hare Intl

Mon 4/20

7:25 pm-11:00 pm

2 stops21h 35m

$670

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Wed 4/15

7:15 am-4:10 pm

1 stop14h 55m

Chicago O'Hare Intl

Mon 4/20

7:15 pm-3:50 pm

1 stop14h 35m

$673

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Fri 4/17

9:15 pm-4:10 pm

1 stop24h 55m

Chicago O'Hare Intl

Fri 5/1

7:15 pm-10:05 pm

1 stop20h 50m

$674

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Wed 4/15

10:15 pm-2:00 pm

1 stop21h 45m

Chicago O'Hare Intl

Mon 4/20

9:00 pm-9:35 pm

1 stop18h 35m

$691

FaroChicago

FAO - ORD

FAOORD

Faro

Fri 4/3

9:15 pm-2:15 pm

1 stop23h 00m

Chicago O'Hare Intl

Tue 4/7

4:20 pm-7:30 pm

1 stop21h 10m

$811

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chicago from

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

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 day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Thursday when prices can be found for as low as $884. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from Portugal because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,205.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from Portugal at noon is the least expensive time of day to depart. momondo users have found prices as low as $886 when looking at flights departing at noon. Try not to purchase tickets in the morning because they tend to be around $1,083. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

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

You could potentially save up to 27% on your flight if you consider stops on a Portugal to Chicago O'Hare Intl Airport flight.

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

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

Fastest flight time

9h 20m

Direct flights

Mon, Thu, Fri and Sun
The fastest flight from Portugal to Chicago O'Hare Intl Airport takes 9h 20m
Direct flights go from Portugal to Chicago O'Hare Intl Airport on Monday, Thursday, Friday and Sunday. There are no airlines offering direct flights.
Search flight deals

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

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

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

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

    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 Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport. 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 Portugal to Chicago O'Hare Intl Airport?

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

Compare and see reviews for airlines that fly from Portugal to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $653Free CancellationRating
7.8
1,471 reviews
Search KLM flights
TAP AIR PORTUGALPriceFrom $665Free CancellationRating
7.1
2,166 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom $671Free CancellationRating
7.2
1,476 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $760Free CancellationRating
7.4
9,424 reviews
Search United Airlines flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
Schaumburg
South Haven
Rockford
Merrillville
Gurnee
Rosemont
Naperville
New Buffalo
Orland Park
Kenosha
Oak Brook
Joliet
Racine
Janesville
Hammond
Aurora
Tinley Park
Elgin
South Holland

Why use momondo?

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

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 Portugal to Chicago for you.

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

Yes. momondo allows you to filter the results for Portugal to Chicago flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Portugal and Chicago 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 Portugal to Chicago right now. Can momondo alert me if prices change?

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

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