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Cheap flights from Porto to Chicago from $432

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to Chicago departing on 6/3. 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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Find the cheapest flights from Porto to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:55 pm - 5:50 pm
OPO
-
ORD
33h 55m
2 stops
Multiple Airlines Logo
9:00 pm - 10:00 pm
ORD
-
OPO
19h 00m
1 stop
$836Multiple Airlines
Sat, Sep 5 - Sun, Sep 13
Multiple Airlines Logo
8:25 am - 10:05 pm
OPO
-
ORD
19h 40m
2 stops
Multiple Airlines Logo
7:25 am - 6:45 am
ORD
-
OPO
17h 20m
2 stops
$847Multiple Airlines
Fri, Jun 5 - Thu, Jun 11
Multiple Airlines Logo
7:00 am - 7:55 pm
OPO
-
ORD
18h 55m
2 stops
Multiple Airlines Logo
11:05 am - 8:50 am
ORD
-
OPO
15h 45m
2 stops
$859Multiple Airlines
Thu, Jun 11 - Sun, Jun 14
Multiple Airlines Logo
5:00 am - 9:25 pm
OPO
-
ORD
22h 25m
3 stops
Multiple Airlines Logo
7:25 pm - 9:20 pm
ORD
-
OPO
19h 55m
3 stops
$870Multiple Airlines
Wed, Jun 17 - Wed, Jun 24
Multiple Airlines Logo
7:00 am - 7:55 pm
OPO
-
ORD
18h 55m
2 stops
Multiple Airlines Logo
11:05 am - 12:40 am
ORD
-
OPO
31h 35m
3 stops
$875Multiple Airlines
Thu, Jun 11 - Sun, Jun 14
Turkish Airlines Logo
4:40 pm - 9:40 am
OPO
-
ORD
23h 00m
1 stop
Turkish Airlines Logo
8:10 pm - 9:45 am
ORD
-
OPO
31h 35m
1 stop
$879Turkish Airlines
Sun, Jun 21 - Mon, Jul 6
Multiple Airlines Logo
5:00 am - 9:25 pm
OPO
-
ORD
22h 25m
3 stops
Multiple Airlines Logo
7:25 pm - 9:20 pm
ORD
-
OPO
19h 55m
3 stops
$882Multiple Airlines
Wed, Jun 17 - Wed, Jun 24
Turkish Airlines Logo
4:40 pm - 9:40 am
OPO
-
ORD
23h 00m
1 stop
Turkish Airlines Logo
8:10 pm - 3:40 pm
ORD
-
OPO
37h 30m
1 stop
$883Turkish Airlines
Sun, Jun 21 - Mon, Jul 6
Turkish Airlines Logo
4:40 pm - 9:40 am
OPO
-
ORD
23h 00m
1 stop
Turkish Airlines Logo
8:10 pm - 3:40 pm
ORD
-
OPO
37h 30m
1 stop
$884Turkish Airlines
Sun, Jun 21 - Mon, Jul 6
Turkish Airlines Logo
4:40 pm - 9:40 am
OPO
-
ORD
23h 00m
1 stop
Turkish Airlines Logo
8:10 pm - 3:40 pm
ORD
-
OPO
37h 30m
1 stop
$885Turkish Airlines
Sun, Jun 21 - Mon, Jul 6

Turkish Airlines flights from Porto to Chicago

Our best Turkish Airlines deals on Porto to Chicago flight tickets
Turkish Airlines
Jun 21
OPO4:40 pmPorto
23h 00m
1 stop
ORD9:40 amChicago O'Hare Intl
Jul 6
ORD8:10 pmChicago O'Hare Intl
31h 35m
1 stop
OPO9:45 amPorto
$879
Turkish Airlines
Jun 21
OPO4:40 pmPorto
23h 00m
1 stop
ORD9:40 amChicago O'Hare Intl
Jul 6
ORD8:10 pmChicago O'Hare Intl
37h 30m
1 stop
OPO3:40 pmPorto
$883
Turkish Airlines
Jun 21
OPO4:40 pmPorto
23h 00m
1 stop
ORD9:40 amChicago O'Hare Intl
Jul 6
ORD8:10 pmChicago O'Hare Intl
37h 30m
1 stop
OPO3:40 pmPorto
$884

Air Canada flights from Porto to Chicago

Our best Air Canada deals on Porto to Chicago flight tickets
Air Canada
Jun 9
OPO6:00 amPorto
31h 50m
2 stops
ORD7:50 amChicago O'Hare Intl
Jun 16
ORD8:20 pmChicago O'Hare Intl
28h 40m
2 stops
OPO7:00 amPorto
$921
Air Canada
Jun 9
OPO6:00 amPorto
31h 50m
2 stops
ORD7:50 amChicago O'Hare Intl
Jun 16
ORD8:20 pmChicago O'Hare Intl
28h 40m
2 stops
OPO7:00 amPorto
$923
Air Canada
Jun 17
OPO6:00 amPorto
19h 25m
2 stops
ORD7:25 pmChicago O'Hare Intl
Jun 24
ORD11:07 amChicago O'Hare Intl
13h 53m
2 stops
OPO7:00 amPorto
$936

momondo Fare Finder

 
Customize your flight search to find flights from Porto to Chicago 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 May 5, 2026.
Use the filters below to find and compare flights from Porto to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoChicago

OPO - ORD

OPOORD

Porto

Sat 9/5

1:55 pm-5:50 pm

2 stops33h 55m

Chicago O'Hare Intl

Sun 9/13

9:00 pm-10:00 pm

1 stop19h 00m

$836

PortoChicago

OPO - ORD

OPOORD

Porto

Fri 6/5

8:25 am-10:05 pm

2 stops19h 40m

Chicago O'Hare Intl

Thu 6/11

7:25 am-6:45 am

2 stops17h 20m

$847
Quickest round-trip

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 6/11

7:00 am-7:55 pm

2 stops18h 55m

Chicago O'Hare Intl

Sun 6/14

11:05 am-8:50 am

2 stops15h 45m

$859

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 6/17

5:00 am-9:25 pm

3 stops22h 25m

Chicago O'Hare Intl

Wed 6/24

7:25 pm-9:20 pm

3 stops19h 55m

$870

PortoChicago

OPO - ORD

OPOORD

Porto

Thu 6/11

7:00 am-7:55 pm

2 stops18h 55m

Chicago O'Hare Intl

Sun 6/14

11:05 am-12:40 am

3 stops31h 35m

$875

PortoChicago

OPO - ORD

OPOORD

Porto

Sun 6/21

4:40 pm-9:40 am

1 stop23h 00m

Chicago O'Hare Intl

Mon 7/6

8:10 pm-9:45 am

1 stop31h 35m

$879

PortoChicago

OPO - ORD

OPOORD

Porto

Wed 6/17

5:00 am-9:25 pm

3 stops22h 25m

Chicago O'Hare Intl

Wed 6/24

7:25 pm-9:20 pm

3 stops19h 55m

$882

PortoChicago

OPO - ORD

OPOORD

Porto

Sun 6/21

4:40 pm-9:40 am

1 stop23h 00m

Chicago O'Hare Intl

Mon 7/6

8:10 pm-3:40 pm

1 stop37h 30m

$883

PortoChicago

OPO - ORD

OPOORD

Porto

Sun 6/21

4:40 pm-9:40 am

1 stop23h 00m

Chicago O'Hare Intl

Mon 7/6

8:10 pm-3:40 pm

1 stop37h 30m

$884

PortoChicago

OPO - ORD

OPOORD

Porto

Sun 6/21

4:40 pm-9:40 am

1 stop23h 00m

Chicago O'Hare Intl

Mon 7/6

8:10 pm-3:40 pm

1 stop37h 30m

$885

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 Chicago from

How to get the cheapest flight ticket from Porto to Chicago

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 Chicago?

The month of May is, on average, the cheapest month to fly to Chicago from Porto, with most prices found around $0. If you’re not able to fly to Chicago in May, then October is your next best option. Flight prices from Porto to Chicago during October average around $506.

When to book flights from Porto to Chicago

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

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

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

Fastest flight time

14h 55m

Direct flights

None
The fastest flight from Porto to Chicago takes 14h 55m
There are no direct flights from Porto to Chicago. There are no popular flight routes from Porto to Chicago.
Search flight deals

Frequently asked questions about flying from Porto to Chicago

  • How far is Porto to Chicago by plane?

    Porto and Chicago are 3927.7 mi apart from one another. By plane, this route typically takes 14h 55m.

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

    Prices for flights from Porto Airport to Chicago were last updated today.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Porto Airport to Chicago.

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

    The travel and health documents you'll need for your trip to Chicago 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 Chicago. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Saint Joseph
Benton Harbor
Portage
Lansing
Valparaiso
Munster
Schererville
Crown Point
Monticello
Chesterton
Porter
Griffith
Saint John

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Chicago from Porto.

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

All flight searches from Porto to Chicago on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Porto and Chicago 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 Porto to Chicago right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Porto to Chicago flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport