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Cheap flights from Chicago O'Hare Intl Airport to Portugal from $222

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 O'Hare Intl Airport to Portugal departing on 1/17. 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 O'Hare Intl Airport to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
7:00 am - 11:00 amORD-OPO
22h 00m2 stops
Scandinavian Airlines Logo
5:55 pm - 4:10 pmOPO-ORD
28h 15m1 stop
$421Scandinavian Airlines
Find Deal
Tue, Apr 14 - Sun, Apr 19
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
Find Deal
Fri, Mar 6 - Sat, Mar 14
TAP AIR PORTUGAL Logo
7:10 pm - 5:00 pmORD-OPO
15h 50m1 stop
TAP AIR PORTUGAL Logo
4:55 pm - 2:45 pmOPO-ORD
27h 50m1 stop
$425TAP AIR PORTUGAL
Find Deal
Wed, Jan 14 - Sat, Jan 24
TAP AIR PORTUGAL Logo
6:00 pm - 11:00 pmORD-OPO
23h 00m1 stop
TAP AIR PORTUGAL Logo
5:05 am - 4:00 pmOPO-ORD
16h 55m1 stop
$440TAP AIR PORTUGAL
Find Deal
Sun, May 3 - Sun, May 10
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
11:15 am - 9:30 amORD-OPO
16h 15m2 stops
United Airlines Logo
6:00 am - 3:20 pmOPO-ORD
15h 20m1 stop
$478United Airlines
Find Deal
Sun, Feb 22 - Fri, Mar 6
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
Find Deal
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
Find Deal
Mon, Mar 23 - Tue, Mar 31
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
Find Deal
Fri, Nov 14 - Tue, Nov 18

Air France flights from Chicago O'Hare Intl Airport to Portugal

Our best Air France deals on Chicago O'Hare Intl Airport to Portugal flight tickets
Air France
Nov 11
ORD2:35 pmChicago O'Hare Intl
14h 45m
2 stops
LIS11:20 amLisbon Humberto Delgado
Nov 19
LIS5:30 amLisbon Humberto Delgado
15h 40m
1 stop
ORD3:10 pmChicago O'Hare Intl
$496
Find similar
Air France
Nov 10
ORD5:20 pmChicago O'Hare Intl
15h 50m
1 stop
LIS3:10 pmLisbon Humberto Delgado
Nov 17
LIS6:30 pmLisbon Humberto Delgado
26h 40m
1 stop
ORD3:10 pmChicago O'Hare Intl
$504
Find similar

Aer Lingus flights from Chicago O'Hare Intl Airport to Portugal

Our best Aer Lingus deals on Chicago O'Hare Intl Airport to Portugal flight tickets
Aer Lingus
Nov 17
ORD3:50 pmChicago O'Hare Intl
12h 20m
1 stop
LIS10:10 amLisbon Humberto Delgado
Nov 22
LIS10:50 amLisbon Humberto Delgado
13h 05m
1 stop
ORD5:55 pmChicago O'Hare Intl
$509
Find similar
Aer Lingus
Nov 17
ORD3:50 pmChicago O'Hare Intl
12h 20m
1 stop
LIS10:10 amLisbon Humberto Delgado
Nov 22
LIS10:50 amLisbon Humberto Delgado
13h 05m
1 stop
ORD5:55 pmChicago O'Hare Intl
$512
Find similar
Aer Lingus
Nov 15
ORD7:40 pmChicago O'Hare Intl
16h 35m
1 stop
LIS6:15 pmLisbon Humberto Delgado
Nov 17
LIS10:50 amLisbon Humberto Delgado
13h 05m
1 stop
ORD5:55 pmChicago O'Hare Intl
$559
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Tue 4/14

7:00 am-11:00 am

2 stops22h 00m

Porto

Sun 4/19

5:55 pm-4:10 pm

1 stop28h 15m

$421

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 1/14

7:10 pm-5:00 pm

1 stop15h 50m

Porto

Sat 1/24

4:55 pm-2:45 pm

1 stop27h 50m

$425

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 5/3

6:00 pm-11:00 pm

1 stop23h 00m

Porto

Sun 5/10

5:05 am-4:00 pm

1 stop16h 55m

$440

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

11:15 am-9:30 am

2 stops16h 15m

Porto

Fri 3/6

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

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

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 O'Hare Intl Airport 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 O'Hare Intl Airport is in January. Flight prices, which tend to average around $561, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from Chicago O'Hare Intl Airport during February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $567.

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 O'Hare Intl Airport. 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 O'Hare Intl Airport 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 O'Hare Intl to Portugal flight route?

Fly from Chicago O'Hare Intl to Lisbon Humberto Delgado for the best Chicago O'Hare Intl - 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 O'Hare Intl Airport 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 O'Hare Intl Airport for as low as $698 on momondo.

What cabin class options are available on Chicago O'Hare Intl to Portugal flights?

There are 3 cabin classes available to choose from on Chicago O'Hare Intl 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 O'Hare Intl Airport to Portugal flights?

You could potentially save up to 46% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Portugal flight.

Cheap Chicago O'Hare Intl Airport to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport in the past 72 hours is $321. The best round-trip flight deal from Chicago O'Hare Intl Airport to Portugal found on momondo in the last 72 hours is $408.
The fastest flight from Chicago O'Hare Intl Airport to Portugal takes 7h 55m
Direct flights go from Chicago O'Hare Intl Airport to Portugal on Monday, Thursday 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 O'Hare Intl Airport to Portugal?

    Prices for flights from Chicago O'Hare Intl Airport to Portugal are updated daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Portugal?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Portugal.

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

    The travel and health documents you'll need for your trip to Portugal may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Chicago O'Hare Intl Airport to Portugal?

Best airlines flying from Chicago O'Hare Intl Airport to Portugal

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Portugal with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $369Free CancellationRating
7.4
1,560 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $425Free CancellationRating
7.1
571 reviews
Search Icelandair flights
LufthansaPriceFrom $441Free CancellationRating
6.8
7,553 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
1,777 reviews
Search SWISS flights
Aer LingusPriceFrom $497Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $504Free CancellationRating
6.7
7,496 reviews
Search British Airways flights
American AirlinesPriceFrom $510Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Portugal. momondo saves you time and could save you money on your trip.

Can I find flights from Chicago to Portugal with flexible booking policies on momondo?

Yes. All flights to Portugal from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Chicago to Portugal?

Once you have performed a search for Chicago to Portugal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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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Flights to Porto Santofrom $421
Flights to Velasfrom $553