Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Chicago to Portugal from $230

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 11/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Chicago to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
7:20 pm - 4:55 pmORD-OPO
15h 35m1 stop
Scandinavian Airlines Logo
5:35 pm - 4:45 pmOPO-ORD
29h 10m1 stop
$421Scandinavian Airlines
Find Deal
Thu, Dec 4 - Fri, Dec 12
TAP AIR PORTUGAL Logo
8:15 pm - 3:55 pmORD-OPO
13h 40m1 stop
TAP AIR PORTUGAL Logo
8:55 am - 3:00 pmOPO-ORD
12h 05m1 stop
$428TAP AIR PORTUGAL
Find Deal
Fri, Dec 5 - Wed, Dec 10
United Airlines Logo
6:20 pm - 9:30 amORD-OPO
10h 10m1 stop
United Airlines Logo
6:00 am - 1:10 pmOPO-ORD
13h 10m1 stop
$474United Airlines
Find Deal
Mon, Oct 27 - Fri, Nov 7
United Airlines Logo
12:45 pm - 9:30 amORD-OPO
15h 45m2 stops
United Airlines Logo
6:00 am - 1:10 pmOPO-ORD
13h 10m1 stop
$478United Airlines
Find Deal
Mon, Oct 27 - Fri, Nov 14
Air Canada Logo
3:35 pm - 1:15 pmORD-OPO
15h 40m2 stops
Air Canada Logo
6:00 am - 8:05 amOPO-ORD
32h 05m2 stops
$483Air Canada
Find Deal
Wed, Nov 26 - Tue, Dec 2
Air Canada Logo
7:05 am - 11:10 amORD-OPO
22h 05m2 stops
Air Canada Logo
6:00 am - 9:13 amOPO-ORD
33h 13m2 stops
$485Air Canada
Find Deal
Sun, Nov 9 - Tue, Dec 2
British Airways Logo
5:10 pm - 3:10 pmORD-FNC
16h 00m1 stop
British Airways Logo
4:55 pm - 1:50 pmFNC-ORD
26h 55m1 stop
$578British Airways
Find Deal
Tue, Nov 25 - Mon, Dec 1
British Airways Logo
5:10 pm - 4:10 pmORD-FNC
17h 00m1 stop
British Airways Logo
3:55 pm - 1:50 pmFNC-ORD
27h 55m1 stop
$616British Airways
Find Deal
Wed, Nov 26 - Wed, Dec 3
American Airlines Logo
6:45 pm - 5:30 pmORD-FAO
16h 45m2 stops
American Airlines Logo
7:40 pm - 4:25 pmFAO-ORD
25h 45m1 stop
$678American Airlines
Find Deal
Wed, Jan 14 - Thu, Mar 12
American Airlines Logo
5:10 pm - 5:30 pmORD-FAO
18h 20m2 stops
American Airlines Logo
7:40 pm - 5:33 pmFAO-ORD
26h 53m2 stops
$688American Airlines
Find Deal
Wed, Jan 14 - Thu, Mar 12

Aer Lingus flights from Chicago to Portugal

Our best Aer Lingus deals on Chicago to Portugal flight tickets
Aer Lingus
Oct 29
ORD4:50 pmChicago O'Hare Intl
12h 20m
1 stop
LIS10:10 amLisbon Humberto Delgado
Nov 14
LIS10:50 amLisbon Humberto Delgado
13h 05m
1 stop
ORD5:55 pmChicago O'Hare Intl
$513
Find similar
Aer Lingus
Oct 16
ORD9:15 pmChicago O'Hare Intl
15h 45m
1 stop
FAO7:00 pmFaro
Oct 21
FAO11:45 amFaro
12h 45m
1 stop
ORD6:30 pmChicago O'Hare Intl
$858
Find similar
Aer Lingus
Oct 16
ORD9:15 pmChicago O'Hare Intl
31h 15m
1 stop
FAO10:30 amFaro
Oct 21
FAO9:10 amFaro
34h 40m
2 stops
ORD1:50 pmChicago O'Hare Intl
$942
Find similar

Air France flights from Chicago to Portugal

Our best Air France deals on Chicago to Portugal flight tickets
Air France
Nov 11
ORD1:29 pmChicago O'Hare Intl
15h 01m
2 stops
OPO10:30 amPorto
Dec 2
OPO11:25 amPorto
33h 45m
1 stop
ORD3:10 pmChicago O'Hare Intl
$501
Find similar
Air France
Dec 4
ORD11:00 amChicago O'Hare Intl
15h 00m
2 stops
LIS8:00 amLisbon Humberto Delgado
Dec 11
LIS5:30 amLisbon Humberto Delgado
15h 40m
1 stop
ORD3:10 pmChicago O'Hare Intl
$522
Find similar
Air France
Nov 9
ORD5:20 pmChicago O'Hare Intl
15h 50m
1 stop
LIS3:10 pmLisbon Humberto Delgado
Nov 16
LIS6:30 pmLisbon Humberto Delgado
26h 40m
1 stop
ORD3:10 pmChicago O'Hare Intl
$530
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 October 9, 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

Thu 12/4

7:20 pm-4:55 pm

1 stop15h 35m

Porto

Fri 12/12

5:35 pm-4:45 pm

1 stop29h 10m

$421

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Fri 12/5

8:15 pm-3:55 pm

1 stop13h 40m

Porto

Wed 12/10

8:55 am-3:00 pm

1 stop12h 05m

$428

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 10/27

6:20 pm-9:30 am

1 stop10h 10m

Porto

Fri 11/7

6:00 am-1:10 pm

1 stop13h 10m

$474

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 10/27

12:45 pm-9:30 am

2 stops15h 45m

Porto

Fri 11/14

6:00 am-1:10 pm

1 stop13h 10m

$478

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 11/26

3:35 pm-1:15 pm

2 stops15h 40m

Porto

Tue 12/2

6:00 am-8:05 am

2 stops32h 05m

$483

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 11/9

7:05 am-11:10 am

2 stops22h 05m

Porto

Tue 12/2

6:00 am-9:13 am

2 stops33h 13m

$485

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

Tue 11/25

5:10 pm-3:10 pm

1 stop16h 00m

Funchal Madeira

Mon 12/1

4:55 pm-1:50 pm

1 stop26h 55m

$578

ChicagoFunchal

ORD - FNC

ORDFNC

Chicago O'Hare Intl

Wed 11/26

5:10 pm-4:10 pm

1 stop17h 00m

Funchal Madeira

Wed 12/3

3:55 pm-1:50 pm

1 stop27h 55m

$616

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Wed 1/14

6:45 pm-5:30 pm

2 stops16h 45m

Faro

Thu 3/12

7:40 pm-4:25 pm

1 stop25h 45m

$678

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

Wed 1/14

5:10 pm-5:30 pm

2 stops18h 20m

Faro

Thu 3/12

7:40 pm-5:33 pm

2 stops26h 53m

$688

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $588.

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 $584. 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 $814.

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 $561. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $808 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 $757 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 $697 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 22% 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

$249

Fastest flight time

7h 55m

Direct flights

Mon, Thu, Fri and Sat

Airports in Portugal

1 airport
The best one-way flight to Portugal from Chicago in the past 72 hours is $249. The best round-trip flight deal from Chicago to Portugal found on momondo in the last 72 hours is $476.
The fastest flight from Chicago to Portugal takes 7h 55m
Direct flights go from Chicago to Portugal on Monday, Thursday, Friday and Saturday. 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
1,530 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $425Free CancellationRating
7.0
551 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom $464Free CancellationRating
7.1
2,005 reviews
Search TAP AIR PORTUGAL flights
Air FrancePriceFrom $470Free CancellationRating
7.4
1,467 reviews
Search Air France flights
IberiaPriceFrom $487Free CancellationRating
7.0
2,982 reviews
Search Iberia flights
Virgin AtlanticPriceFrom $490Free CancellationRating
7.4
665 reviews
Search Virgin Atlantic flights
Aer LingusPriceFrom $494Free CancellationRating
7.2
1,324 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $504Free CancellationRating
6.7
7,446 reviews
Search British Airways flights
American AirlinesPriceFrom $510Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
SWISSPriceFrom $517Free CancellationRating
7.6
1,766 reviews
Search SWISS 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 11/8
Sat 11/15
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo
Flights to Lisbonfrom $352
Flights to Portofrom $324
Flights to Funchalfrom $404
Flights to Farofrom $402
Flights to Ponta Delgadafrom $427
Flights to Lajesfrom $477
Flights to Hortafrom $474
Flights to Pico Islandfrom $461
Flights to Porto Santofrom $555
Flights to Velasfrom $481