Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Chicago to Porto from $238

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 Porto departing on 4/14. 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 Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
6:00 pm - 10:55 am
ORD
-
OPO
10h 55m
1 stop
TAP AIR PORTUGAL Logo
10:00 am - 4:00 pm
OPO
-
ORD
12h 00m
1 stop
$371TAP AIR PORTUGAL
Sun, May 3 - Sun, May 10
TAP AIR PORTUGAL Logo
6:00 pm - 11:10 pm
ORD
-
OPO
23h 10m
1 stop
TAP AIR PORTUGAL Logo
7:00 am - 4:00 pm
OPO
-
ORD
15h 00m
1 stop
$392TAP AIR PORTUGAL
Wed, Apr 15 - Wed, Apr 22
TAP AIR PORTUGAL Logo
6:00 pm - 11:00 am
ORD
-
OPO
11h 00m
1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 4:00 pm
OPO
-
ORD
23h 30m
1 stop
$397TAP AIR PORTUGAL
Wed, Apr 8 - Tue, Apr 14
TAP AIR PORTUGAL Logo
6:00 pm - 9:00 am
ORD
-
OPO
33h 00m
1 stop
TAP AIR PORTUGAL Logo
3:25 pm - 4:00 pm
OPO
-
ORD
30h 35m
1 stop
$409TAP AIR PORTUGAL
Sun, May 10 - Sat, May 16
Scandinavian Airlines Logo
8:20 pm - 4:55 pm
ORD
-
OPO
15h 35m
1 stop
Scandinavian Airlines Logo
10:25 am - 5:45 pm
OPO
-
ORD
36h 20m
1 stop
$473Scandinavian Airlines
Thu, Mar 19 - Wed, Mar 25
Multiple Airlines Logo
12:50 pm - 12:05 pm
ORD
-
OPO
18h 15m
2 stops
Multiple Airlines Logo
12:30 pm - 9:05 pm
OPO
-
ORD
13h 35m
1 stop
$488Multiple Airlines
Mon, Mar 9 - Thu, Mar 19
Scandinavian Airlines Logo
8:20 pm - 4:55 pm
ORD
-
OPO
15h 35m
1 stop
Scandinavian Airlines Logo
10:25 am - 5:45 pm
OPO
-
ORD
36h 20m
1 stop
$489Scandinavian Airlines
Thu, Mar 19 - Wed, Mar 25
Multiple Airlines Logo
6:00 pm - 11:50 pm
ORD
-
OPO
23h 50m
2 stops
Multiple Airlines Logo
9:25 pm - 4:00 pm
OPO
-
ORD
24h 35m
2 stops
$491Multiple Airlines
Wed, Apr 22 - Tue, Apr 28
Delta Logo
12:47 pm - 10:30 am
MDW
-
OPO
16h 43m
2 stops
Delta Logo
5:00 am - 9:56 am
OPO
-
MDW
33h 56m
2 stops
$591Delta
Wed, Mar 18 - Wed, Mar 25
Delta Logo
12:47 pm - 10:30 am
MDW
-
OPO
16h 43m
2 stops
Delta Logo
11:25 am - 8:53 am
OPO
-
MDW
26h 28m
2 stops
$628Delta
Wed, Mar 18 - Tue, Mar 24

TAP AIR PORTUGAL flights from Chicago to Porto

Our best TAP AIR PORTUGAL deals on Chicago to Porto flight tickets
TAP AIR PORTUGAL
Jan 25
ORD8:25 pmChicago O'Hare Intl
14h 35m
1 stop
OPO5:00 pmPorto
Feb 7
OPO6:00 pmPorto
26h 45m
1 stop
ORD2:45 pmChicago O'Hare Intl
$317
TAP AIR PORTUGAL
May 3
ORD6:00 pmChicago O'Hare Intl
10h 55m
1 stop
OPO10:55 amPorto
May 10
OPO10:00 amPorto
12h 00m
1 stop
ORD4:00 pmChicago O'Hare Intl
$371
TAP AIR PORTUGAL
Jan 25
ORD8:25 pmChicago O'Hare Intl
15h 40m
1 stop
OPO6:05 pmPorto
Feb 7
OPO6:00 pmPorto
26h 45m
1 stop
ORD2:45 pmChicago O'Hare Intl
$373

Scandinavian Airlines flights from Chicago to Porto

Our best Scandinavian Airlines deals on Chicago to Porto flight tickets
Scandinavian Airlines
Mar 19
ORD8:20 pmChicago O'Hare Intl
15h 35m
1 stop
OPO4:55 pmPorto
Mar 25
OPO10:25 amPorto
36h 20m
1 stop
ORD5:45 pmChicago O'Hare Intl
$473
Scandinavian Airlines
Mar 19
ORD8:20 pmChicago O'Hare Intl
15h 35m
1 stop
OPO4:55 pmPorto
Mar 25
OPO10:25 amPorto
36h 20m
1 stop
ORD5:45 pmChicago O'Hare Intl
$489
Scandinavian Airlines
Apr 18
ORD7:15 pmChicago O'Hare Intl
15h 50m
1 stop
OPO5:05 pmPorto
Apr 26
OPO5:55 pmPorto
28h 15m
1 stop
ORD4:10 pmChicago O'Hare Intl
$533

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to Porto 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 January 24, 2026.
Use the filters below to find and compare flights from Chicago to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 5/3

6:00 pm-10:55 am

1 stop10h 55m

Porto

Sun 5/10

10:00 am-4:00 pm

1 stop12h 00m

$371

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 4/15

6:00 pm-11:10 pm

1 stop23h 10m

Porto

Wed 4/22

7:00 am-4:00 pm

1 stop15h 00m

$392

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 4/8

6:00 pm-11:00 am

1 stop11h 00m

Porto

Tue 4/14

10:30 pm-4:00 pm

1 stop23h 30m

$397

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 5/10

6:00 pm-9:00 am

1 stop33h 00m

Porto

Sat 5/16

3:25 pm-4:00 pm

1 stop30h 35m

$409

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Thu 3/19

8:20 pm-4:55 pm

1 stop15h 35m

Porto

Wed 3/25

10:25 am-5:45 pm

1 stop36h 20m

$473

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 3/9

12:50 pm-12:05 pm

2 stops18h 15m

Porto

Thu 3/19

12:30 pm-9:05 pm

1 stop13h 35m

$488

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Thu 3/19

8:20 pm-4:55 pm

1 stop15h 35m

Porto

Wed 3/25

10:25 am-5:45 pm

1 stop36h 20m

$489

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 4/22

6:00 pm-11:50 pm

2 stops23h 50m

Porto

Tue 4/28

9:25 pm-4:00 pm

2 stops24h 35m

$491

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Wed 3/18

12:47 pm-10:30 am

2 stops16h 43m

Porto

Wed 3/25

5:00 am-9:56 am

2 stops33h 56m

$591

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Wed 3/18

12:47 pm-10:30 am

2 stops16h 43m

Porto

Tue 3/24

11:25 am-8:53 am

2 stops26h 28m

$628

Flights are sorted by cheapest round-trip flights first.

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

See travel insights to Porto from

How to get the cheapest flight ticket from Chicago to Porto

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 typical price of a round-trip flight between Chicago and Porto?

What is the cheapest month to fly to Porto?

The month of April is, on average, the cheapest month to fly to Porto from Chicago, with most prices found around $616. If you aren’t able to travel during the month of April, then book flights to Porto from Chicago during March instead. Flights to Porto in March, while not as cheap as those in April, still average around $650.

How far in advance should I book a flight to Porto?

You are more likely to see cheaper flights to Porto from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $672 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Chicago for as low as $613 on momondo.

When to book flights from Chicago to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to Porto (CHI to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Porto

Fastest flight time

10h 55m

Direct flights

None
The fastest flight from Chicago to Porto takes 10h 55m
There are no direct flights from Chicago to Porto. There are no popular flight routes from Chicago to Porto.
Search flight deals

  • How far is Chicago to Porto by plane?

    A flight from Chicago to Porto will travel around 3927.7 mi. By plane, this route typically takes 10h 55m.

  • When did momondo last update prices for flights from Chicago to Porto Airport?

    Prices for flights from Chicago to Porto Airport refresh daily.

  • How many operators does momondo search for flights from Chicago to Porto Airport?

  • How old do you have to be to fly from Chicago to Porto Airport?

    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 Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The travel and health documents required for your trip to Porto Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Chicago to Porto?

Best airlines flying from Chicago to Porto

Compare and see reviews for airlines that fly from Chicago to Porto with momondo
Airline
Rating
Free Cancellation
Price
TAP AIR PORTUGALPriceFrom $480Free CancellationRating
7.1
2,127 reviews
Search TAP AIR PORTUGAL flights
IberiaPriceFrom $488Free CancellationRating
7.0
3,098 reviews
Search Iberia flights
British AirwaysPriceFrom $504Free CancellationRating
6.7
7,698 reviews
Search British Airways flights
LufthansaPriceFrom $507Free CancellationRating
6.8
7,747 reviews
Search Lufthansa flights
KLMPriceFrom $531Free CancellationRating
7.7
1,442 reviews
Search KLM flights
United AirlinesPriceFrom $547Free CancellationRating
7.4
9,196 reviews
Search United Airlines flights
American AirlinesPriceFrom $553Free CancellationRating
7.2
11,196 reviews
Search American Airlines flights
SWISSPriceFrom $558Free CancellationRating
7.5
1,859 reviews
Search SWISS flights
DeltaPriceFrom $638Free CancellationRating
7.9
8,115 reviews
Search Delta flights
Air CanadaPriceFrom $646Free CancellationRating
7.1
10,653 reviews
Search Air Canada flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Matosinhos
Aveiro
Esposende
Lamego
Guimarães
Espinho
Chaves
Pinhao
Arcos de Valdevez
Ponte de Lima
Viseu
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to Porto. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Chicago to Porto flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Porto from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Chicago to Porto right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Chicago to Porto flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Porto 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
Mon 2/23
Mon 3/2
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal