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Cheap flights from Chicago Midway Airport to Porto from $492

This is the cheapest round-trip 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 12/9. 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.
KLM Logo
1:50 pm - 10:30 amMDW-OPO
14h 40m2 stops
KLM Logo
6:05 am - 6:18 pmOPO-MDW
18h 13m2 stops
$492KLM
Find Deal
Tue, Dec 9 - Tue, Dec 16
Delta Logo
9:34 am - 10:30 amMDW-OPO
18h 56m2 stops
Delta Logo
6:30 am - 6:18 pmOPO-MDW
17h 48m2 stops
$517Delta
Find Deal
Tue, Dec 2 - Mon, Dec 8
Delta Logo
10:36 am - 10:30 amMDW-OPO
17h 54m2 stops
Delta Logo
6:30 am - 6:18 pmOPO-MDW
17h 48m2 stops
$522Delta
Find Deal
Thu, Dec 4 - Fri, Dec 12
Delta Logo
1:15 pm - 10:30 amMDW-OPO
15h 15m2 stops
Delta Logo
6:00 am - 6:08 pmOPO-MDW
18h 08m2 stops
$542Delta
Find Deal
Sun, Nov 9 - Sat, Nov 22
Delta Logo
9:30 am - 10:30 amMDW-OPO
19h 00m2 stops
Delta Logo
5:00 am - 6:34 pmOPO-MDW
19h 34m2 stops
$567Delta
Find Deal
Sat, Feb 21 - Sun, Mar 1
Delta Logo
5:59 pm - 3:30 pmMDW-OPO
15h 31m2 stops
Delta Logo
5:00 am - 6:31 pmOPO-MDW
19h 31m2 stops
$712Delta
Find Deal
Sat, Apr 25 - Tue, May 5
Delta Logo
5:59 pm - 3:30 pmMDW-OPO
15h 31m2 stops
Delta Logo
9:20 am - 9:46 pmOPO-MDW
18h 26m2 stops
$717Delta
Find Deal
Sun, Mar 29 - Sun, Apr 5
Multiple Airlines Logo
1:15 pm - 10:30 amMDW-OPO
15h 15m2 stops
Multiple Airlines Logo
6:05 am - 6:18 pmOPO-MDW
18h 13m2 stops
$764Multiple Airlines
Find Deal
Tue, Nov 25 - Tue, Dec 2
Delta Logo
5:59 pm - 3:30 pmMDW-OPO
15h 31m2 stops
Delta Logo
9:20 am - 9:46 pmOPO-MDW
18h 26m2 stops
$792Delta
Find Deal
Sun, Mar 29 - Sun, Apr 5
KLM Logo
1:00 pm - 10:30 amMDW-OPO
15h 30m2 stops
KLM Logo
5:00 am - 4:25 pmOPO-MDW
17h 25m2 stops
$2,558KLM
Find Deal
Sat, Feb 21 - Sun, Mar 1

KLM flights from Chicago Midway Airport to Porto

Our best KLM deals on Chicago Midway Airport to Porto flight tickets
KLM
Dec 9
MDW1:50 pmChicago Midway
14h 40m
2 stops
OPO10:30 amPorto
Dec 16
OPO6:05 amPorto
18h 13m
2 stops
MDW6:18 pmChicago Midway
$492
Find similar
KLM
Feb 21
MDW1:00 pmChicago Midway
15h 30m
2 stops
OPO10:30 amPorto
Mar 1
OPO5:00 amPorto
17h 25m
2 stops
MDW4:25 pmChicago Midway
$2,558
Find similar

Delta flights from Chicago Midway Airport to Porto

Our best Delta deals on Chicago Midway Airport to Porto flight tickets
Delta
Dec 2
MDW9:34 amChicago Midway
18h 56m
2 stops
OPO10:30 amPorto
Dec 8
OPO6:30 amPorto
17h 48m
2 stops
MDW6:18 pmChicago Midway
$517
Find similar
Delta
Dec 4
MDW10:36 amChicago Midway
17h 54m
2 stops
OPO10:30 amPorto
Dec 12
OPO6:30 amPorto
17h 48m
2 stops
MDW6:18 pmChicago Midway
$522
Find similar
Delta
Nov 9
MDW1:15 pmChicago Midway
15h 15m
2 stops
OPO10:30 amPorto
Nov 22
OPO6:00 amPorto
18h 08m
2 stops
MDW6:08 pmChicago Midway
$542
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 October 27, 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 12/9

1:50 pm-10:30 am

2 stops14h 40m

Porto

Tue 12/16

6:05 am-6:18 pm

2 stops18h 13m

$492

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Tue 12/2

9:34 am-10:30 am

2 stops18h 56m

Porto

Mon 12/8

6:30 am-6:18 pm

2 stops17h 48m

$517

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Thu 12/4

10:36 am-10:30 am

2 stops17h 54m

Porto

Fri 12/12

6:30 am-6:18 pm

2 stops17h 48m

$522

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Sun 11/9

1:15 pm-10:30 am

2 stops15h 15m

Porto

Sat 11/22

6:00 am-6:08 pm

2 stops18h 08m

$542

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Sat 2/21

9:30 am-10:30 am

2 stops19h 00m

Porto

Sun 3/1

5:00 am-6:34 pm

2 stops19h 34m

$567

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Sat 4/25

5:59 pm-3:30 pm

2 stops15h 31m

Porto

Tue 5/5

5:00 am-6:31 pm

2 stops19h 31m

$712

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Sun 3/29

5:59 pm-3:30 pm

2 stops15h 31m

Porto

Sun 4/5

9:20 am-9:46 pm

2 stops18h 26m

$717

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Tue 11/25

1:15 pm-10:30 am

2 stops15h 15m

Porto

Tue 12/2

6:05 am-6:18 pm

2 stops18h 13m

$764

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Sun 3/29

5:59 pm-3:30 pm

2 stops15h 31m

Porto

Sun 4/5

9:20 am-9:46 pm

2 stops18h 26m

$792

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Sat 2/21

1:00 pm-10:30 am

2 stops15h 30m

Porto

Sun 3/1

5:00 am-4:25 pm

2 stops17h 25m

$2,558

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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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

Direct flights

None
There are no direct flights from Chicago Midway Airport to Porto. There are no popular flight routes from Chicago Midway Airport to Porto.
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  • How far is Chicago Midway to Porto by plane?

    The straight-line distance from Chicago Midway to Porto is 3936.0 mi. 14h 40m 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
Aveiro
Braga
Matosinhos
Esposende
Lamego
Guimarães
Chaves
Espinho
Viseu
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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