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Cheap flights from Portugal to Chicago from $297

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 3/3. 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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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.
Lufthansa Logo
5:00 am - 6:40 pm
LIS
-
ORD
19h 40m
2 stops
Lufthansa Logo
6:00 pm - 1:20 pm
ORD
-
LIS
13h 20m
1 stop
$441Lufthansa
Sat, Feb 21 - Mon, Mar 2
TAP AIR PORTUGAL Logo
6:05 am - 3:25 pm
FAO
-
ORD
15h 20m
1 stop
TAP AIR PORTUGAL Logo
8:15 pm - 11:50 pm
ORD
-
FAO
21h 35m
1 stop
$441TAP AIR PORTUGAL
Fri, Feb 20 - Fri, Feb 27
Lufthansa Logo
12:30 pm - 8:05 pm
OPO
-
ORD
13h 35m
1 stop
Lufthansa Logo
7:30 pm - 2:45 pm
ORD
-
OPO
14h 15m
1 stop
$443Lufthansa
Thu, Mar 5 - Tue, Mar 10
United Airlines Logo
6:00 am - 3:20 pm
OPO
-
ORD
15h 20m
1 stop
United Airlines Logo
2:00 pm - 9:30 am
ORD
-
OPO
13h 30m
2 stops
$458United Airlines
Thu, Feb 12 - Wed, Feb 25
United Airlines Logo
6:00 am - 3:20 pm
OPO
-
ORD
15h 20m
1 stop
United Airlines Logo
4:05 pm - 3:25 pm
ORD
-
OPO
17h 20m
1 stop
$459United Airlines
Sat, Feb 14 - Wed, Feb 18
Multiple Airlines Logo
5:00 am - 1:25 pm
LIS
-
ORD
14h 25m
1 stop
Multiple Airlines Logo
6:50 pm - 2:35 pm
ORD
-
LIS
13h 45m
1 stop
$459Multiple Airlines
Sat, Feb 21 - Mon, Mar 2
Multiple Airlines Logo
5:00 am - 3:20 pm
LIS
-
ORD
16h 20m
1 stop
Multiple Airlines Logo
6:50 pm - 2:35 pm
ORD
-
LIS
13h 45m
1 stop
$462Multiple Airlines
Tue, Feb 24 - Tue, Mar 3
Delta Logo
5:00 am - 5:53 pm
OPO
-
ORD
18h 53m
2 stops
Delta Logo
1:37 pm - 10:30 am
ORD
-
OPO
15h 53m
2 stops
$472Delta
Thu, Mar 5 - Tue, Mar 10
KLM Logo
7:15 pm - 4:41 pm
FAO
-
ORD
27h 26m
2 stops
KLM Logo
4:25 pm - 6:25 pm
ORD
-
FAO
20h 00m
1 stop
$480KLM
Mon, Feb 16 - Sun, Mar 1
KLM Logo
7:15 pm - 5:53 pm
FAO
-
ORD
28h 38m
2 stops
KLM Logo
10:35 am - 9:15 am
ORD
-
FAO
16h 40m
2 stops
$485KLM
Mon, Feb 16 - Sun, Mar 1

Delta flights from Portugal to Chicago O'Hare Intl Airport

Our best Delta deals on Portugal to Chicago O'Hare Intl Airport flight tickets
Delta
Mar 5
OPO5:00 amPorto
18h 53m
2 stops
ORD5:53 pmChicago O'Hare Intl
Mar 10
ORD1:37 pmChicago O'Hare Intl
15h 53m
2 stops
OPO10:30 amPorto
$472
Delta
Feb 21
LIS5:00 amLisbon Humberto Delgado
15h 20m
1 stop
ORD2:20 pmChicago O'Hare Intl
Mar 1
ORD5:37 pmChicago O'Hare Intl
17h 53m
2 stops
LIS5:30 pmLisbon Humberto Delgado
$473
Delta
Mar 20
LIS5:00 amLisbon Humberto Delgado
15h 20m
1 stop
ORD3:20 pmChicago O'Hare Intl
Apr 4
ORD2:05 pmChicago O'Hare Intl
18h 50m
2 stops
LIS2:55 pmLisbon Humberto Delgado
$475

British Airways flights from Portugal to Chicago O'Hare Intl Airport

Our best British Airways deals on Portugal to Chicago O'Hare Intl Airport flight tickets
British Airways
Mar 2
FAO7:05 pmFaro
26h 20m
1 stop
ORD3:25 pmChicago O'Hare Intl
Mar 8
ORD7:40 pmChicago O'Hare Intl
16h 40m
1 stop
FAO5:20 pmFaro
$479
British Airways
Mar 2
FAO7:05 pmFaro
28h 55m
2 stops
ORD6:00 pmChicago O'Hare Intl
Mar 8
ORD7:40 pmChicago O'Hare Intl
16h 40m
1 stop
FAO5:20 pmFaro
$484
British Airways
Mar 20
LIS7:05 amLisbon Humberto Delgado
19h 19m
2 stops
ORD9:24 pmChicago O'Hare Intl
Apr 4
ORD9:15 pmChicago O'Hare Intl
30h 50m
1 stop
LIS10:05 amLisbon Humberto Delgado
$571

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 January 29, 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

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sat 2/21

5:00 am-6:40 pm

2 stops19h 40m

Chicago O'Hare Intl

Mon 3/2

6:00 pm-1:20 pm

1 stop13h 20m

$441

FaroChicago

FAO - ORD

FAOORD

Faro

Fri 2/20

6:05 am-3:25 pm

1 stop15h 20m

Chicago O'Hare Intl

Fri 2/27

8:15 pm-11:50 pm

1 stop21h 35m

$441

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 3/5

12:30 pm-8:05 pm

1 stop13h 35m

Chicago O'Hare Intl

Tue 3/10

7:30 pm-2:45 pm

1 stop14h 15m

$443

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 2/12

6:00 am-3:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Wed 2/25

2:00 pm-9:30 am

2 stops13h 30m

$458

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 2/14

6:00 am-3:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Wed 2/18

4:05 pm-3:25 pm

1 stop17h 20m

$459

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Sat 2/21

5:00 am-1:25 pm

1 stop14h 25m

Chicago O'Hare Intl

Mon 3/2

6:50 pm-2:35 pm

1 stop13h 45m

$459

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Tue 2/24

5:00 am-3:20 pm

1 stop16h 20m

Chicago O'Hare Intl

Tue 3/3

6:50 pm-2:35 pm

1 stop13h 45m

$462

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 3/5

5:00 am-5:53 pm

2 stops18h 53m

Chicago O'Hare Intl

Tue 3/10

1:37 pm-10:30 am

2 stops15h 53m

$472

FaroChicago

FAO - ORD

FAOORD

Faro

Mon 2/16

7:15 pm-4:41 pm

2 stops27h 26m

Chicago O'Hare Intl

Sun 3/1

4:25 pm-6:25 pm

1 stop20h 00m

$480

FaroChicago

FAO - ORD

FAOORD

Faro

Mon 2/16

7:15 pm-5:53 pm

2 stops28h 38m

Chicago O'Hare Intl

Sun 3/1

10:35 am-9:15 am

2 stops16h 40m

$485

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 month to fly to Chicago O'Hare Intl Airport?

The month of April is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Portugal averaging around $746.

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 $932 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 2% 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, Sat 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, Saturday 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
DeltaPriceFrom $650Free CancellationRating
7.9
8,127 reviews
Search Delta flights
KLMPriceFrom $653Free CancellationRating
7.7
1,443 reviews
Search KLM flights
TAP AIR PORTUGALPriceFrom $665Free CancellationRating
7.1
2,130 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom $669Free CancellationRating
7.2
1,443 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $760Free CancellationRating
7.4
9,215 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
Naperville
Rosemont
New Buffalo
Kenosha
Joliet
Oak Brook
Orland Park
Racine
Hammond
Janesville
Tinley Park
Elgin
Aurora
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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