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Cheap flights from Chicago to Portugal from $245

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 2/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
7:10 pm - 1:05 pmORD-OPO
11h 55m1 stop
TAP AIR PORTUGAL Logo
5:00 am - 2:45 pmOPO-ORD
15h 45m1 stop
$425TAP AIR PORTUGAL
Find Deal
mié., dic. 3 - dom., dic. 14
TAP AIR PORTUGAL Logo
8:15 pm - 3:55 pmORD-OPO
13h 40m1 stop
TAP AIR PORTUGAL Logo
8:00 pm - 3:25 pmOPO-ORD
25h 25m1 stop
$426TAP AIR PORTUGAL
Find Deal
vie., nov. 28 - jue., dic. 11
Air Canada Logo
3:35 pm - 1:15 pmORD-OPO
15h 40m2 stops
Air Canada Logo
6:00 am - 9:13 amOPO-ORD
33h 13m2 stops
$483Air Canada
Find Deal
mié., feb. 4 - mié., feb. 11
British Airways Logo
5:10 pm - 4:05 pmORD-FNC
16h 55m1 stop
British Airways Logo
12:00 pm - 1:50 pmFNC-ORD
31h 50m1 stop
$485British Airways
Find Deal
dom., feb. 1 - jue., feb. 12
United Airlines Logo
3:20 pm - 11:40 amORD-OPO
14h 20m1 stop
United Airlines Logo
6:00 am - 3:20 pmOPO-ORD
15h 20m1 stop
$488United Airlines
Find Deal
mar., dic. 30 - vie., ene. 16
Air Canada Logo
10:35 am - 9:20 amORD-LIS
16h 45m2 stops
Air Canada Logo
5:00 am - 3:10 pmLIS-ORD
16h 10m2 stops
$490Air Canada
Find Deal
lun., feb. 16 - mar., feb. 24
United Airlines Logo
8:00 am - 8:10 amORD-LIS
19h 10m2 stops
United Airlines Logo
5:05 am - 12:55 pmLIS-ORD
13h 50m1 stop
$492United Airlines
Find Deal
lun., mar. 23 - jue., abr. 2
American Airlines Logo
9:45 pm - 5:55 pmORD-LIS
14h 10m1 stop
American Airlines Logo
11:05 am - 8:34 pmLIS-ORD
15h 29m1 stop
$495American Airlines
Find Deal
vie., nov. 28 - vie., dic. 5
American Airlines Logo
3:29 pm - 9:05 amORD-LIS
11h 36m2 stops
American Airlines Logo
7:45 am - 2:55 pmLIS-ORD
13h 10m1 stop
$498American Airlines
Find Deal
lun., dic. 8 - dom., dic. 14
British Airways Logo
5:10 pm - 2:15 pmORD-FNC
15h 05m1 stop
British Airways Logo
4:55 pm - 8:00 pmFNC-ORD
33h 05m2 stops
$513British Airways
Find Deal
lun., feb. 2 - lun., feb. 9

Delta flights from Chicago to Portugal

Our best Delta deals on Chicago to Portugal flight tickets
Delta
Dec 1
ORD5:08 pmChicago O'Hare Intl
18h 22m
2 stops
LIS5:30 pmLisbon Humberto Delgado
Dec 9
LIS11:25 amLisbon Humberto Delgado
32h 55m
1 stop
ORD2:20 pmChicago O'Hare Intl
$489
Find similar
Delta
Dec 31
ORD1:35 pmChicago O'Hare Intl
14h 55m
2 stops
OPO10:30 amPorto
Jan 14
OPO6:00 amPorto
20h 47m
2 stops
ORD8:47 pmChicago O'Hare Intl
$492
Find similar
Delta
Dec 31
ORD4:25 pmChicago O'Hare Intl
24h 00m
1 stop
OPO10:25 pmPorto
Jan 13
OPO6:05 amPorto
21h 30m
2 stops
ORD9:35 pmChicago O'Hare Intl
$493
Find similar

American Airlines flights from Chicago to Portugal

Our best American Airlines deals on Chicago to Portugal flight tickets
American Airlines
Nov 28
ORD9:45 pmChicago O'Hare Intl
14h 10m
1 stop
LIS5:55 pmLisbon Humberto Delgado
Dec 5
LIS11:05 amLisbon Humberto Delgado
15h 29m
1 stop
ORD8:34 pmChicago O'Hare Intl
$495
Find similar
American Airlines
Dec 8
ORD3:29 pmChicago O'Hare Intl
11h 36m
2 stops
LIS9:05 amLisbon Humberto Delgado
Dec 14
LIS7:45 amLisbon Humberto Delgado
13h 10m
1 stop
ORD2:55 pmChicago O'Hare Intl
$498
Find similar
American Airlines
Jan 16
ORD6:25 pmChicago O'Hare Intl
17h 30m
1 stop
LIS5:55 pmLisbon Humberto Delgado
Jan 20
LIS11:05 amLisbon Humberto Delgado
14h 45m
2 stops
ORD7:50 pmChicago O'Hare Intl
$502
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 noviembre 10, 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

mié. 12/3

7:10 pm-1:05 pm

1 stop11h 55m

Porto

dom. 12/14

5:00 am-2:45 pm

1 stop15h 45m

$425

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

vie. 11/28

8:15 pm-3:55 pm

1 stop13h 40m

Porto

jue. 12/11

8:00 pm-3:25 pm

1 stop25h 25m

$426

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

mié. 2/4

3:35 pm-1:15 pm

2 stops15h 40m

Porto

mié. 2/11

6:00 am-9:13 am

2 stops33h 13m

$483

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

dom. 2/1

5:10 pm-4:05 pm

1 stop16h 55m

Funchal Madeira

jue. 2/12

12:00 pm-1:50 pm

1 stop31h 50m

$485

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

mar. 12/30

3:20 pm-11:40 am

1 stop14h 20m

Porto

vie. 1/16

6:00 am-3:20 pm

1 stop15h 20m

$488

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

lun. 2/16

10:35 am-9:20 am

2 stops16h 45m

Lisbon Humberto Delgado

mar. 2/24

5:00 am-3:10 pm

2 stops16h 10m

$490

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

lun. 3/23

8:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

jue. 4/2

5:05 am-12:55 pm

1 stop13h 50m

$492

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

vie. 11/28

9:45 pm-5:55 pm

1 stop14h 10m

Lisbon Humberto Delgado

vie. 12/5

11:05 am-8:34 pm

1 stop15h 29m

$495

ChicagoLisbon

ORD - LIS

ORDLIS

Chicago O'Hare Intl

lun. 12/8

3:29 pm-9:05 am

2 stops11h 36m

Lisbon Humberto Delgado

dom. 12/14

7:45 am-2:55 pm

1 stop13h 10m

$498

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

lun. 2/2

5:10 pm-2:15 pm

1 stop15h 05m

Funchal Madeira

lun. 2/9

4:55 pm-8:00 pm

2 stops33h 05m

$513

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
1,570 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $425Free CancellationRating
7.0
574 reviews
Search Icelandair flights
LufthansaPriceFrom $441Free CancellationRating
6.8
7,562 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $468Free CancellationRating
7.1
2,057 reviews
Search TAP AIR PORTUGAL flights
Air FrancePriceFrom $470Free CancellationRating
7.4
1,486 reviews
Search Air France flights
IberiaPriceFrom $487Free CancellationRating
7.0
3,007 reviews
Search Iberia flights
SWISSPriceFrom $496Free CancellationRating
7.5
1,781 reviews
Search SWISS flights
Aer LingusPriceFrom $497Free CancellationRating
7.2
1,366 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $504Free CancellationRating
6.7
7,508 reviews
Search British Airways flights
American AirlinesPriceFrom $510Free CancellationRating
7.2
11,047 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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