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Cheap flights from Chicago to Portugal from $220

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 1/13. 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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Cheap round-trip flights

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Scandinavian Airlines Logo
10:36 am - 3:20 pmORD-FNC
22h 44m2 stops
Scandinavian Airlines Logo
4:10 pm - 5:45 pmFNC-ORD
30h 35m1 stop
$424Scandinavian Airlines
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Fri, Mar 6 - Sat, Mar 14
TAP AIR PORTUGAL Logo
7:10 pm - 3:05 pmORD-OPO
13h 55m1 stop
TAP AIR PORTUGAL Logo
8:55 am - 2:45 pmOPO-ORD
11h 50m1 stop
$425TAP AIR PORTUGAL
Find Deal
Wed, Dec 3 - Sun, Dec 14
United Airlines Logo
4:10 pm - 9:30 amORD-OPO
11h 20m1 stop
United Airlines Logo
6:00 am - 3:20 pmOPO-ORD
15h 20m1 stop
$474United Airlines
Find Deal
Sun, Feb 22 - Fri, Mar 6
United Airlines Logo
12:35 pm - 9:30 amORD-OPO
14h 55m2 stops
United Airlines Logo
6:00 am - 3:20 pmOPO-ORD
15h 20m1 stop
$478United Airlines
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Sun, Feb 22 - Thu, Mar 5
British Airways Logo
5:10 pm - 4:15 pmORD-FNC
17h 05m1 stop
British Airways Logo
3:05 pm - 1:50 pmFNC-ORD
28h 45m1 stop
$483British Airways
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Sun, Nov 16 - Tue, Nov 25
Air Canada Logo
7:15 am - 12:05 pmORD-OPO
22h 50m2 stops
Air Canada Logo
6:00 am - 1:01 pmOPO-ORD
37h 01m2 stops
$484Air Canada
Find Deal
Mon, Feb 23 - Fri, Mar 6
Air Canada Logo
3:55 pm - 12:50 pmORD-OPO
15h 55m2 stops
Air Canada Logo
11:05 am - 8:05 amOPO-ORD
27h 00m2 stops
$486Air Canada
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Mon, Mar 23 - Tue, Mar 31
American Airlines Logo
1:35 pm - 9:05 amORD-LIS
13h 30m2 stops
American Airlines Logo
8:20 am - 2:55 pmLIS-ORD
12h 35m1 stop
$498American Airlines
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Thu, Jan 22 - Tue, Jan 27
British Airways Logo
5:10 pm - 2:50 pmORD-LIS
15h 40m1 stop
British Airways Logo
7:05 am - 6:45 pmLIS-ORD
17h 40m1 stop
$508British Airways
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Fri, Nov 14 - Tue, Nov 18
American Airlines Logo
3:20 pm - 9:05 amORD-LIS
11h 45m2 stops
American Airlines Logo
6:30 am - 2:55 pmLIS-ORD
14h 25m1 stop
$523American Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11

American Airlines flights from Chicago to Portugal

Our best American Airlines deals on Chicago to Portugal flight tickets
American Airlines
Jan 22
ORD1:35 pmChicago O'Hare Intl
13h 30m
2 stops
LIS9:05 amLisbon Humberto Delgado
Jan 27
LIS8:20 amLisbon Humberto Delgado
12h 35m
1 stop
ORD2:55 pmChicago O'Hare Intl
$498
Find similar
American Airlines
Dec 4
ORD3:20 pmChicago O'Hare Intl
11h 45m
2 stops
LIS9:05 amLisbon Humberto Delgado
Dec 11
LIS6:30 amLisbon Humberto Delgado
14h 25m
1 stop
ORD2:55 pmChicago O'Hare Intl
$523
Find similar
American Airlines
Jan 9
ORD8:45 pmChicago O'Hare Intl
17h 15m
2 stops
OPO8:00 pmPorto
Jan 19
OPO8:40 pmPorto
24h 15m
1 stop
ORD2:55 pmChicago O'Hare Intl
$551
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British Airways flights from Chicago to Portugal

Our best British Airways deals on Chicago to Portugal flight tickets
British Airways
Nov 16
ORD5:10 pmChicago O'Hare Intl
17h 05m
1 stop
FNC4:15 pmFunchal Madeira
Nov 25
FNC3:05 pmFunchal Madeira
28h 45m
1 stop
ORD1:50 pmChicago O'Hare Intl
$483
Find similar
British Airways
Nov 14
ORD5:10 pmChicago O'Hare Intl
15h 40m
1 stop
LIS2:50 pmLisbon Humberto Delgado
Nov 18
LIS7:05 amLisbon Humberto Delgado
17h 40m
1 stop
ORD6:45 pmChicago O'Hare Intl
$508
Find similar
British Airways
Nov 23
ORD6:25 pmChicago O'Hare Intl
15h 50m
1 stop
FNC4:15 pmFunchal Madeira
Dec 2
FNC3:05 pmFunchal Madeira
28h 45m
1 stop
ORD1:50 pmChicago O'Hare Intl
$557
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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 4, 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

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

Fri 3/6

10:36 am-3:20 pm

2 stops22h 44m

Funchal Madeira

Sat 3/14

4:10 pm-5:45 pm

1 stop30h 35m

$424

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 12/3

7:10 pm-3:05 pm

1 stop13h 55m

Porto

Sun 12/14

8:55 am-2:45 pm

1 stop11h 50m

$425

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 2/22

4:10 pm-9:30 am

1 stop11h 20m

Porto

Fri 3/6

6:00 am-3:20 pm

1 stop15h 20m

$474

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 2/22

12:35 pm-9:30 am

2 stops14h 55m

Porto

Thu 3/5

6:00 am-3:20 pm

1 stop15h 20m

$478

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

Sun 11/16

5:10 pm-4:15 pm

1 stop17h 05m

Funchal Madeira

Tue 11/25

3:05 pm-1:50 pm

1 stop28h 45m

$483

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 2/23

7:15 am-12:05 pm

2 stops22h 50m

Porto

Fri 3/6

6:00 am-1:01 pm

2 stops37h 01m

$484

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 3/23

3:55 pm-12:50 pm

2 stops15h 55m

Porto

Tue 3/31

11:05 am-8:05 am

2 stops27h 00m

$486

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Thu 1/22

1:35 pm-9:05 am

2 stops13h 30m

Lisbon Humberto Delgado

Tue 1/27

8:20 am-2:55 pm

1 stop12h 35m

$498

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Fri 11/14

5:10 pm-2:50 pm

1 stop15h 40m

Lisbon Humberto Delgado

Tue 11/18

7:05 am-6:45 pm

1 stop17h 40m

$508

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

Thu 12/4

3:20 pm-9:05 am

2 stops11h 45m

Lisbon Humberto Delgado

Thu 12/11

6:30 am-2:55 pm

1 stop14h 25m

$523

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 $555, 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 $586.

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 $763 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 $698 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 and Sat

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 and Saturday. There are no airlines offering direct flights.
There is 1 airport near Portugal: Lisbon Humberto Delgado (LIS)
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  • 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
1,556 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $425Free CancellationRating
7.1
568 reviews
Search Icelandair flights
LufthansaPriceFrom $441Free CancellationRating
6.8
7,545 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $468Free CancellationRating
7.1
2,046 reviews
Search TAP AIR PORTUGAL flights
Air FrancePriceFrom $470Free CancellationRating
7.4
1,482 reviews
Search Air France flights
IberiaPriceFrom $487Free CancellationRating
7.0
3,006 reviews
Search Iberia flights
SWISSPriceFrom $496Free CancellationRating
7.5
1,775 reviews
Search SWISS flights
Aer LingusPriceFrom $497Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $504Free CancellationRating
6.7
7,494 reviews
Search British Airways flights
American AirlinesPriceFrom $510Free CancellationRating
7.2
11,038 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

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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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