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Cheap flights from Portugal to Chicago from $349

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 5/7. 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.
Scandinavian Airlines Logo
11:50 am - 4:10 pm
OPO
-
ORD
34h 20m
1 stop
Scandinavian Airlines Logo
7:15 pm - 5:05 pm
ORD
-
OPO
15h 50m
1 stop
$562Scandinavian Airlines
Thu, May 14 - Thu, May 28
TAP AIR PORTUGAL Logo
10:30 pm - 4:00 pm
OPO
-
ORD
23h 30m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 7:00 pm
ORD
-
OPO
18h 55m
1 stop
$629TAP 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
$629TAP AIR PORTUGAL
Fri, Apr 17 - Fri, Apr 24
TAP AIR PORTUGAL Logo
6:10 pm - 4:00 pm
FAO
-
ORD
27h 50m
1 stop
TAP AIR PORTUGAL Logo
6:00 pm - 10:25 am
ORD
-
FAO
10h 25m
1 stop
$635TAP AIR PORTUGAL
Sat, Apr 18 - Fri, Apr 24
TAP AIR PORTUGAL Logo
6:10 pm - 4:00 pm
FAO
-
ORD
27h 50m
1 stop
TAP AIR PORTUGAL Logo
6:05 pm - 10:25 am
ORD
-
FAO
10h 20m
1 stop
$636TAP AIR PORTUGAL
Sat, Apr 18 - Sat, Apr 25
Multiple Airlines Logo
3:20 pm - 4:00 pm
FAO
-
ORD
30h 40m
2 stops
Multiple Airlines Logo
6:05 pm - 10:50 pm
ORD
-
FAO
22h 45m
2 stops
$671Multiple Airlines
Sat, Apr 18 - Sat, Apr 25
Multiple Airlines Logo
6:35 am - 2:25 pm
LIS
-
ORD
13h 50m
1 stop
Multiple Airlines Logo
9:00 pm - 10:05 pm
ORD
-
LIS
19h 05m
1 stop
$701Multiple Airlines
Thu, Jun 11 - Sun, Jul 19
Turkish Airlines Logo
11:00 am - 9:40 am
OPO
-
ORD
28h 40m
1 stop
Turkish Airlines Logo
11:25 am - 10:00 am
ORD
-
OPO
16h 35m
1 stop
$756Turkish Airlines
Thu, Apr 16 - Wed, Apr 29
Delta Logo
5:35 am - 5:58 pm
LIS
-
MDW
18h 23m
2 stops
Delta Logo
6:38 pm - 6:45 pm
MDW
-
LIS
18h 07m
2 stops
$847Delta
Fri, Apr 17 - Sat, May 2
Delta Logo
5:35 am - 5:58 pm
LIS
-
MDW
18h 23m
2 stops
Delta Logo
6:38 pm - 6:45 pm
MDW
-
LIS
18h 07m
2 stops
$848Delta
Fri, Apr 17 - Sat, May 2

United Airlines flights from Portugal to Chicago

Our best United Airlines deals on Portugal to Chicago flight tickets
United Airlines
May 14
OPO6:00 amPorto
14h 50m
1 stop
ORD2:50 pmChicago O'Hare Intl
May 28
ORD8:45 amChicago O'Hare Intl
16h 10m
1 stop
OPO6:55 amPorto
$874
United Airlines
Apr 18
FAO3:35 pmFaro
34h 20m
1 stop
ORD7:55 pmChicago O'Hare Intl
Apr 25
ORD3:00 pmChicago O'Hare Intl
17h 30m
1 stop
FAO2:30 pmFaro
$946
United Airlines
Mar 28
LIS11:55 amLisbon Humberto Delgado
24h 31m
1 stop
ORD7:26 amChicago O'Hare Intl
Apr 8
ORD2:00 pmChicago O'Hare Intl
12h 20m
2 stops
LIS8:20 amLisbon Humberto Delgado
$1,089

British Airways flights from Portugal to Chicago

Our best British Airways deals on Portugal to Chicago flight tickets
British Airways
May 1
FAO8:00 pmFaro
28h 15m
1 stop
ORD6:15 pmChicago O'Hare Intl
May 4
ORD7:05 pmChicago O'Hare Intl
13h 40m
1 stop
FAO2:45 pmFaro
$895
British Airways
May 1
FAO8:00 pmFaro
28h 15m
1 stop
ORD6:15 pmChicago O'Hare Intl
May 4
ORD5:00 pmChicago O'Hare Intl
15h 45m
1 stop
FAO2:45 pmFaro
$912
British Airways
May 1
FAO8:00 pmFaro
28h 15m
1 stop
ORD6:15 pmChicago O'Hare Intl
May 4
ORD7:05 pmChicago O'Hare Intl
13h 40m
1 stop
FAO2:45 pmFaro
$913

momondo Fare Finder

 
Customize your flight search to find flights from Portugal to Chicago 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 27, 2026.
Use the filters below to find and compare flights from Portugal to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 5/14

11:50 am-4:10 pm

1 stop34h 20m

Chicago O'Hare Intl

Thu 5/28

7:15 pm-5:05 pm

1 stop15h 50m

$562

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-7:00 pm

1 stop18h 55m

$629
Quickest round-trip

FaroChicago

FAO - ORD

FAOORD

Faro

Fri 4/17

6:05 am-4:00 pm

1 stop15h 55m

Chicago O'Hare Intl

Fri 4/24

6:00 pm-10:25 am

1 stop10h 25m

$629

FaroChicago

FAO - ORD

FAOORD

Faro

Sat 4/18

6:10 pm-4:00 pm

1 stop27h 50m

Chicago O'Hare Intl

Fri 4/24

6:00 pm-10:25 am

1 stop10h 25m

$635

FaroChicago

FAO - ORD

FAOORD

Faro

Sat 4/18

6:10 pm-4:00 pm

1 stop27h 50m

Chicago O'Hare Intl

Sat 4/25

6:05 pm-10:25 am

1 stop10h 20m

$636

FaroChicago

FAO - ORD

FAOORD

Faro

Sat 4/18

3:20 pm-4:00 pm

2 stops30h 40m

Chicago O'Hare Intl

Sat 4/25

6:05 pm-10:50 pm

2 stops22h 45m

$671

LisbonChicago

LIS - ORD

LISORD

Lisbon Humberto Delgado

Thu 6/11

6:35 am-2:25 pm

1 stop13h 50m

Chicago O'Hare Intl

Sun 7/19

9:00 pm-10:05 pm

1 stop19h 05m

$701

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 4/16

11:00 am-9:40 am

1 stop28h 40m

Chicago O'Hare Intl

Wed 4/29

11:25 am-10:00 am

1 stop16h 35m

$756

LisbonChicago

LIS - MDW

LISMDW

Lisbon Humberto Delgado

Fri 4/17

5:35 am-5:58 pm

2 stops18h 23m

Chicago Midway

Sat 5/2

6:38 pm-6:45 pm

2 stops18h 07m

$847

LisbonChicago

LIS - MDW

LISMDW

Lisbon Humberto Delgado

Fri 4/17

5:35 am-5:58 pm

2 stops18h 23m

Chicago Midway

Sat 5/2

6:38 pm-6:45 pm

2 stops18h 07m

$848

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

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?

The month of February is, on average, the cheapest month to fly to Chicago from Portugal, with most prices found around $587. If you’re not able to fly to Chicago in February, then December is your next best option. Flight prices from Portugal to Chicago during December average around $729.

What is the cheapest day to depart on your flight to Chicago?

The cheapest day to depart on your flight to Chicago is on a Thursday when prices can be found for as low as $748. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Portugal to Chicago for around $1,205.

What is the cheapest time of day to depart on your flight to Chicago?

Our most recent data shows that the best time of day to fly to Chicago is at noon. Flights from Portugal to Chicago during this time can be as low as $886. In contrast, the most expensive time of day to depart to Chicago is in the morning when prices are around $1,056.

What is the cheapest Portugal to Chicago flight route?

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

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

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

You could potentially save up to 27% on your flight if you consider stops on a Portugal to Chicago flight.

Cheap Portugal to Chicago flight deals and tips

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

Fastest flight time

9h 20m

Direct flights

Mon, Thu, Fri, Sat and Sun

Airports in Chicago

3 airports
The fastest flight from Portugal to Chicago takes 9h 20m
Direct flights go from Portugal to Chicago on Monday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There are 3 airports in Chicago. From Portugal there are direct flights to Chicago O'Hare Intl (ORD).
Search flight deals

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

    Prices for flights from Portugal to Chicago were last updated today.

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

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

    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.

  • What documentation or ID do you need to fly to Chicago?

    The required travel and health documents for your Chicago 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 Chicago. 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 Portugal to Chicago?

Best airlines flying from Portugal to Chicago

Compare and see reviews for airlines that fly from Portugal to Chicago with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $653Free CancellationRating
7.8
1,477 reviews
Search KLM flights
TAP AIR PORTUGALPriceFrom $665Free CancellationRating
7.1
2,182 reviews
Search TAP AIR PORTUGAL flights
United AirlinesPriceFrom $760Free CancellationRating
7.4
9,500 reviews
Search United Airlines flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Saint Joseph
Benton Harbor
Portage
Lansing
Valparaiso
Schererville
Munster
Crown Point
Chesterton
Monticello
Porter
Griffith
Saint John

Why use momondo?

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

It is quick and easy to find Portugal to Chicago flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Chicago that suits 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?

Yes momondo offers price alerts on flights to Chicago from Portugal. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport