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Cheap flights from Chicago to Portugal from $225

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 2/8. 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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Find the cheapest flights from Chicago to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
7:10 pm - 5:00 pmORD-OPO
15h 50m1 stop
TAP AIR PORTUGAL Logo
5:00 am - 2:45 pmOPO-ORD
15h 45m1 stop
$425TAP AIR PORTUGAL
Find Deal
Wed, Dec 3 - Sun, Dec 14
TAP AIR PORTUGAL Logo
7:10 pm - 1:05 pmORD-OPO
11h 55m1 stop
TAP AIR PORTUGAL Logo
6:00 pm - 2:45 pmOPO-ORD
26h 45m1 stop
$430TAP AIR PORTUGAL
Find Deal
Wed, Jan 14 - Sat, Jan 24
TAP AIR PORTUGAL Logo
7:10 pm - 6:00 pmORD-OPO
16h 50m1 stop
TAP AIR PORTUGAL Logo
6:55 am - 2:45 pmOPO-ORD
13h 50m1 stop
$439TAP AIR PORTUGAL
Find Deal
Wed, Dec 3 - Sun, Dec 7
Iberia Logo
5:40 pm - 1:30 pmORD-FNC
13h 50m1 stop
Iberia Logo
2:10 pm - 2:55 pmFNC-ORD
30h 45m1 stop
$464Iberia
Find Deal
Tue, Feb 24 - Wed, Mar 4
Delta Logo
2:20 pm - 5:30 pmORD-LIS
21h 10m2 stops
Delta Logo
11:25 am - 2:20 pmLIS-ORD
32h 55m1 stop
$490Delta
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Mon, Feb 16 - Thu, Mar 5
Air Canada Logo
3:35 pm - 9:20 amORD-LIS
11h 45m1 stop
Air Canada Logo
10:55 am - 8:10 pmLIS-ORD
15h 15m1 stop
$491Air Canada
Find Deal
Tue, Dec 2 - Thu, Dec 11
Air Canada Logo
2:00 pm - 8:55 amORD-LIS
12h 55m1 stop
Air Canada Logo
6:10 am - 5:48 pmLIS-ORD
17h 38m2 stops
$492Air Canada
Find Deal
Wed, Nov 26 - Tue, Dec 2
American Airlines Logo
8:40 pm - 2:50 pmORD-LIS
12h 10m1 stop
American Airlines Logo
11:05 am - 5:39 pmLIS-ORD
12h 34m1 stop
$494American Airlines
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Fri, Nov 28 - Fri, Dec 5
Delta Logo
5:45 pm - 5:30 pmORD-LIS
18h 45m2 stops
Delta Logo
5:30 am - 4:10 pmLIS-ORD
15h 40m1 stop
$496Delta
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Tue, Mar 10 - Tue, Mar 17
American Airlines Logo
6:25 pm - 5:30 pmORD-FAO
17h 05m2 stops
American Airlines Logo
7:40 pm - 5:33 pmFAO-ORD
26h 53m2 stops
$588American Airlines
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Wed, Jan 14 - Thu, Mar 12

Lufthansa flights from Chicago to Portugal

Our best Lufthansa deals on Chicago to Portugal flight tickets
Lufthansa
Dec 3
ORD9:50 pmChicago O'Hare Intl
19h 40m
1 stop
LIS11:30 pmLisbon Humberto Delgado
Dec 8
LIS2:10 pmLisbon Humberto Delgado
34h 15m
1 stop
ORD6:25 pmChicago O'Hare Intl
$495
Find similar
Lufthansa
Nov 26
ORD9:50 pmChicago O'Hare Intl
19h 50m
1 stop
OPO11:40 pmPorto
Dec 2
OPO1:45 pmPorto
29h 25m
2 stops
ORD1:10 pmChicago O'Hare Intl
$509
Find similar
Lufthansa
May 3
ORD9:40 pmChicago O'Hare Intl
19h 45m
1 stop
OPO11:25 pmPorto
May 12
OPO6:00 amPorto
12h 55m
1 stop
ORD12:55 pmChicago O'Hare Intl
$510
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
33h 13m
2 stops
ORD9:13 amChicago O'Hare Intl
$483
Find similar
Air Canada
Dec 2
ORD3:35 pmChicago O'Hare Intl
11h 45m
1 stop
LIS9:20 amLisbon Humberto Delgado
Dec 11
LIS10:55 amLisbon Humberto Delgado
15h 15m
1 stop
ORD8:10 pmChicago O'Hare Intl
$491
Find similar
Air Canada
Nov 26
ORD2:00 pmChicago O'Hare Intl
12h 55m
1 stop
LIS8:55 amLisbon Humberto Delgado
Dec 2
LIS6:10 amLisbon Humberto Delgado
17h 38m
2 stops
ORD5:48 pmChicago O'Hare Intl
$492
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to Portugal 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 November 13, 2025.
Use the filters below to find and compare flights from Chicago to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 12/3

7:10 pm-5:00 pm

1 stop15h 50m

Porto

Sun 12/14

5:00 am-2:45 pm

1 stop15h 45m

$425

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 1/14

7:10 pm-1:05 pm

1 stop11h 55m

Porto

Sat 1/24

6:00 pm-2:45 pm

1 stop26h 45m

$430

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 12/3

7:10 pm-6:00 pm

1 stop16h 50m

Porto

Sun 12/7

6:55 am-2:45 pm

1 stop13h 50m

$439

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

Tue 2/24

5:40 pm-1:30 pm

1 stop13h 50m

Funchal Madeira

Wed 3/4

2:10 pm-2:55 pm

1 stop30h 45m

$464

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Mon 2/16

2:20 pm-5:30 pm

2 stops21h 10m

Lisbon Humberto Delgado

Thu 3/5

11:25 am-2:20 pm

1 stop32h 55m

$490

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Tue 12/2

3:35 pm-9:20 am

1 stop11h 45m

Lisbon Humberto Delgado

Thu 12/11

10:55 am-8:10 pm

1 stop15h 15m

$491

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Wed 11/26

2:00 pm-8:55 am

1 stop12h 55m

Lisbon Humberto Delgado

Tue 12/2

6:10 am-5:48 pm

2 stops17h 38m

$492

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Fri 11/28

8:40 pm-2:50 pm

1 stop12h 10m

Lisbon Humberto Delgado

Fri 12/5

11:05 am-5:39 pm

1 stop12h 34m

$494

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Tue 3/10

5:45 pm-5:30 pm

2 stops18h 45m

Lisbon Humberto Delgado

Tue 3/17

5:30 am-4:10 pm

1 stop15h 40m

$496

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Wed 1/14

6:25 pm-5:30 pm

2 stops17h 05m

Faro

Thu 3/12

7:40 pm-5:33 pm

2 stops26h 53m

$588

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 Portugal from

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?

The cheapest month to fly to Portugal from Chicago is in February. Flight prices, which tend to average around $540, 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 $589.

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 $802 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 $706 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

$321

Fastest flight time

7h 55m

Direct flights

Mon, Thu, Sat and Sun

Airports in Portugal

1 airport
The best one-way flight to Portugal from Chicago in the past 72 hours is $321. The best round-trip flight deal from Chicago to Portugal found on momondo in the last 72 hours is $408.
The fastest flight from Chicago to Portugal takes 7h 55m
Direct flights go from Chicago to Portugal on Monday, Thursday, Saturday and Sunday. 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?

  • 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?

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 AirlinesPriceFrom $369Free CancellationRating
7.4
1,575 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $425Free CancellationRating
7.1
578 reviews
Search Icelandair flights
LufthansaPriceFrom $441Free CancellationRating
6.8
7,570 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $468Free CancellationRating
7.1
2,059 reviews
Search TAP AIR PORTUGAL flights
Air FrancePriceFrom $470Free CancellationRating
7.4
1,486 reviews
Search Air France flights
IberiaPriceFrom $487Free CancellationRating
7.0
3,010 reviews
Search Iberia flights
SWISSPriceFrom $496Free CancellationRating
7.5
1,784 reviews
Search SWISS flights
Aer LingusPriceFrom $497Free CancellationRating
7.2
1,370 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $504Free CancellationRating
6.7
7,516 reviews
Search British Airways flights
American AirlinesPriceFrom $510Free CancellationRating
7.2
11,050 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.
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Find better results for your trip to Portugal

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Popular flights according to clicks in the last 7 days on momondo
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