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Cheap flights from Chicago Midway Airport to Porto from $332

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 Midway Airport to Porto departing on 1/15. 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 Midway Airport to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
1:28 pm - 10:30 am
MDW
-
OPO
15h 02m2 stops
Delta Logo
5:00 am - 10:22 pm
OPO
-
MDW
23h 22m2 stops
$493Delta
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
2:03 pm - 10:30 am
MDW
-
OPO
15h 27m2 stops
Multiple Airlines Logo
5:00 am - 5:55 pm
OPO
-
MDW
17h 55m2 stops
$543Multiple Airlines
Tue, Mar 17 - Tue, Mar 24
Delta Logo
5:38 pm - 3:30 pm
MDW
-
OPO
15h 52m2 stops
Delta Logo
5:00 am - 5:55 pm
OPO
-
MDW
18h 55m2 stops
$552Delta
Tue, Mar 31 - Wed, Apr 8
KLM Logo
1:28 pm - 10:30 am
MDW
-
OPO
15h 02m2 stops
KLM Logo
5:00 am - 5:29 pm
OPO
-
MDW
18h 29m2 stops
$574KLM
Sun, Jan 18 - Fri, Jan 30
Delta Logo
5:59 pm - 3:30 pm
MDW
-
OPO
15h 31m2 stops
Delta Logo
5:00 am - 6:31 pm
OPO
-
MDW
19h 31m2 stops
$612Delta
Wed, Apr 15 - Sun, Apr 19
Delta Logo
5:59 pm - 3:30 pm
MDW
-
OPO
15h 31m2 stops
Delta Logo
5:00 am - 6:05 pm
OPO
-
MDW
19h 05m2 stops
$627Delta
Wed, Apr 15 - Tue, Apr 21
Delta Logo
1:28 pm - 10:30 am
MDW
-
OPO
15h 02m2 stops
Delta Logo
5:00 am - 5:34 pm
OPO
-
MDW
18h 34m2 stops
$692Delta
Wed, Jan 14 - Sun, Jan 18
Delta Logo
6:35 pm - 3:30 pm
MDW
-
OPO
14h 55m2 stops
Delta Logo
5:00 am - 5:55 pm
OPO
-
MDW
18h 55m2 stops
$747Delta
Sat, Apr 4 - Sat, Apr 11
KLM Logo
1:28 pm - 10:30 am
MDW
-
OPO
15h 02m2 stops
KLM Logo
5:00 am - 5:29 pm
OPO
-
MDW
18h 29m2 stops
$774KLM
Fri, Jan 16 - Thu, Jan 29
Delta Logo
11:21 am - 10:30 am
MDW
-
OPO
17h 09m2 stops
Delta Logo
5:00 am - 5:29 pm
OPO
-
MDW
18h 29m2 stops
$858Delta
Fri, Jan 16 - Thu, Jan 29

Delta flights from Chicago Midway Airport to Porto

Our best Delta deals on Chicago Midway Airport to Porto flight tickets
Delta
Mar 31
MDW5:38 pmChicago Midway
15h 52m
2 stops
OPO3:30 pmPorto
Apr 8
OPO5:00 amPorto
18h 55m
2 stops
MDW5:55 pmChicago Midway
$552
Find similar
Delta
Apr 15
MDW5:59 pmChicago Midway
15h 31m
2 stops
OPO3:30 pmPorto
Apr 19
OPO5:00 amPorto
19h 31m
2 stops
MDW6:31 pmChicago Midway
$612
Find similar
Delta
Apr 15
MDW5:59 pmChicago Midway
15h 31m
2 stops
OPO3:30 pmPorto
Apr 21
OPO5:00 amPorto
19h 31m
2 stops
MDW6:31 pmChicago Midway
$627
Find similar

KLM flights from Chicago Midway Airport to Porto

Our best KLM deals on Chicago Midway Airport to Porto flight tickets
KLM
Jan 18
MDW1:28 pmChicago Midway
15h 02m
2 stops
OPO10:30 amPorto
Jan 30
OPO5:00 amPorto
18h 29m
2 stops
MDW5:29 pmChicago Midway
$574
Find similar
KLM
Jan 16
MDW1:28 pmChicago Midway
15h 02m
2 stops
OPO10:30 amPorto
Jan 29
OPO5:00 amPorto
18h 29m
2 stops
MDW5:29 pmChicago Midway
$774
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago Midway Airport 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 December 18, 2025.
Use the filters below to find and compare flights from Chicago Midway Airport to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Tue 1/13

1:28 pm-10:30 am

2 stops15h 02m

Porto

Tue 1/20

5:00 am-10:22 pm

2 stops23h 22m

$493

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Tue 3/17

2:03 pm-10:30 am

2 stops15h 27m

Porto

Tue 3/24

5:00 am-5:55 pm

2 stops17h 55m

$543

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Tue 3/31

5:38 pm-3:30 pm

2 stops15h 52m

Porto

Wed 4/8

5:00 am-5:55 pm

2 stops18h 55m

$552

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Sun 1/18

1:28 pm-10:30 am

2 stops15h 02m

Porto

Fri 1/30

5:00 am-5:29 pm

2 stops18h 29m

$574

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Wed 4/15

5:59 pm-3:30 pm

2 stops15h 31m

Porto

Sun 4/19

5:00 am-6:31 pm

2 stops19h 31m

$612

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Wed 4/15

5:59 pm-3:30 pm

2 stops15h 31m

Porto

Tue 4/21

5:00 am-6:05 pm

2 stops19h 05m

$627

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Wed 1/14

1:28 pm-10:30 am

2 stops15h 02m

Porto

Sun 1/18

5:00 am-5:34 pm

2 stops18h 34m

$692

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Sat 4/4

6:35 pm-3:30 pm

2 stops14h 55m

Porto

Sat 4/11

5:00 am-5:55 pm

2 stops18h 55m

$747

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Fri 1/16

1:28 pm-10:30 am

2 stops15h 02m

Porto

Thu 1/29

5:00 am-5:29 pm

2 stops18h 29m

$774

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Fri 1/16

11:21 am-10:30 am

2 stops17h 09m

Porto

Thu 1/29

5:00 am-5:29 pm

2 stops18h 29m

$858

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Porto from

How to get the cheapest flight ticket from Chicago Midway Airport 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 cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Monday when prices can be found for as low as $708. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $808. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

In the evening is the cheapest time of day to fly from Chicago Midway Airport to Porto when you can find flight prices for as low as $611. Flying to Porto in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,018 on average. Flights to Porto from Chicago Midway Airport at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Chicago Midway Airport to Porto

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

Cheap Chicago Midway Airport to Porto (MDW to OPO) flight deals and tips

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

Fastest flight time

14h 55m

Direct flights

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

  • How far is Chicago Midway to Porto by plane?

    The straight-line distance from Chicago Midway to Porto is 3936.0 mi. 14h 55m is a normal flight duration for this route.

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

    Prices for flights from Chicago Midway Airport to Porto Airport are refreshed on a daily basis.

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

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

    The necessary travel and health documents for your Porto Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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
Aveiro
Matosinhos
Guimarães
Esposende
Lamego
Chaves
Viseu
Espinho
Ponte de Lima
Arcos de Valdevez
Pinhao
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Chicago to Porto for you.

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

Flights from Chicago to Porto with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Chicago to Porto.

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

If you are simply researching potential flights to Porto, momondo offers a useful price alert feature which will track prices for flights to Porto from Chicago and alert you when they change.

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