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Cheap flights from Chicago Midway Airport to Porto from $292

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 11/6. 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

Delta Logo
6:23 pm - 3:30 pmMDW-OPO
15h 07m2 stops
Delta Logo
6:05 am - 6:25 pmOPO-MDW
18h 20m2 stops
$545Delta
Find Deal
Mon, Oct 20 - Tue, Nov 4
Delta Logo
5:04 pm - 3:30 pmMDW-OPO
16h 26m2 stops
Delta Logo
6:05 am - 6:25 pmOPO-MDW
18h 20m2 stops
$546Delta
Find Deal
Mon, Oct 20 - Tue, Nov 4
KLM Logo
1:14 pm - 10:30 amMDW-OPO
15h 16m2 stops
KLM Logo
6:05 am - 6:00 pmOPO-MDW
17h 55m2 stops
$572KLM
Find Deal
Tue, Nov 25 - Tue, Dec 2
Delta Logo
6:23 pm - 3:30 pmMDW-OPO
15h 07m2 stops
Delta Logo
6:15 am - 6:25 pmOPO-MDW
18h 10m2 stops
$595Delta
Find Deal
Tue, Oct 14 - Tue, Oct 21
Delta Logo
1:08 pm - 10:40 amMDW-OPO
15h 32m2 stops
Delta Logo
6:05 am - 6:08 pmOPO-MDW
18h 03m2 stops
$619Delta
Find Deal
Mon, Oct 13 - Tue, Nov 11
Delta Logo
1:00 pm - 10:30 amMDW-OPO
15h 30m2 stops
Delta Logo
11:15 am - 6:36 pmOPO-MDW
37h 21m2 stops
$621Delta
Find Deal
Wed, Dec 3 - Sun, Dec 7
KLM Logo
5:34 pm - 3:25 pmMDW-OPO
15h 51m2 stops
KLM Logo
6:30 am - 6:18 pmOPO-MDW
17h 48m2 stops
$622KLM
Find Deal
Thu, Nov 27 - Fri, Dec 12
Delta Logo
9:34 am - 10:30 amMDW-OPO
18h 56m2 stops
Delta Logo
11:15 am - 8:54 amOPO-MDW
51h 39m2 stops
$627Delta
Find Deal
Wed, Dec 3 - Sun, Dec 7
Logo
9:35 am - 7:00 amMDW-OPO
15h 25m2 stops
Logo
8:25 am - 4:24 pmOPO-MDW
13h 59m2 stops
$1,007
Find Deal
Thu, Sep 18 - Tue, Sep 23
KLM Logo
6:30 pm - 6:15 pmMDW-OPO
17h 45m2 stops
KLM Logo
4:20 pm - 5:35 pmOPO-MDW
31h 15m2 stops
$1,324KLM
Find Deal
Fri, Sep 12 - Mon, Sep 15

Delta flights from Chicago Midway Airport to Porto

Our best Delta deals on Chicago Midway Airport to Porto flight tickets
Delta
Oct 20
MDW6:23 pmChicago Midway
15h 07m
2 stops
OPO3:30 pmPorto
Nov 4
OPO6:05 amPorto
18h 20m
2 stops
MDW6:25 pmChicago Midway
$545
Find similar
Delta
Oct 20
MDW5:04 pmChicago Midway
16h 26m
2 stops
OPO3:30 pmPorto
Nov 4
OPO6:05 amPorto
18h 20m
2 stops
MDW6:25 pmChicago Midway
$546
Find similar
Delta
Oct 14
MDW6:23 pmChicago Midway
15h 07m
2 stops
OPO3:30 pmPorto
Oct 21
OPO6:15 amPorto
18h 10m
2 stops
MDW6:25 pmChicago Midway
$595
Find similar

KLM flights from Chicago Midway Airport to Porto

Our best KLM deals on Chicago Midway Airport to Porto flight tickets
KLM
Nov 25
MDW1:14 pmChicago Midway
15h 16m
2 stops
OPO10:30 amPorto
Dec 2
OPO6:05 amPorto
17h 55m
2 stops
MDW6:00 pmChicago Midway
$572
Find similar
KLM
Nov 27
MDW5:34 pmChicago Midway
15h 51m
2 stops
OPO3:25 pmPorto
Dec 12
OPO6:30 amPorto
17h 48m
2 stops
MDW6:18 pmChicago Midway
$622
Find similar
KLM
Sep 12
MDW6:30 pmChicago Midway
17h 45m
2 stops
OPO6:15 pmPorto
Sep 15
OPO4:20 pmPorto
31h 15m
2 stops
MDW5:35 pmChicago Midway
$1,324
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 September 1, 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

Mon 10/20

6:23 pm-3:30 pm

2 stops15h 07m

Porto

Tue 11/4

6:05 am-6:25 pm

2 stops18h 20m

$545

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Mon 10/20

5:04 pm-3:30 pm

2 stops16h 26m

Porto

Tue 11/4

6:05 am-6:25 pm

2 stops18h 20m

$546

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Tue 11/25

1:14 pm-10:30 am

2 stops15h 16m

Porto

Tue 12/2

6:05 am-6:00 pm

2 stops17h 55m

$572

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Tue 10/14

6:23 pm-3:30 pm

2 stops15h 07m

Porto

Tue 10/21

6:15 am-6:25 pm

2 stops18h 10m

$595

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Mon 10/13

1:08 pm-10:40 am

2 stops15h 32m

Porto

Tue 11/11

6:05 am-6:08 pm

2 stops18h 03m

$619

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Wed 12/3

1:00 pm-10:30 am

2 stops15h 30m

Porto

Sun 12/7

11:15 am-6:36 pm

2 stops37h 21m

$621

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Thu 11/27

5:34 pm-3:25 pm

2 stops15h 51m

Porto

Fri 12/12

6:30 am-6:18 pm

2 stops17h 48m

$622

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Wed 12/3

9:34 am-10:30 am

2 stops18h 56m

Porto

Sun 12/7

11:15 am-8:54 am

2 stops51h 39m

$627

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Thu 9/18

9:35 am-7:00 am

2 stops15h 25m

Porto

Tue 9/23

8:25 am-4:24 pm

2 stops13h 59m

$1,007

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Fri 9/12

6:30 pm-6:15 pm

2 stops17h 45m

Porto

Mon 9/15

4:20 pm-5:35 pm

2 stops31h 15m

$1,324

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

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.
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 20m 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
Aveiro
Coimbra
Braga
Matosinhos
Caminha
Guimarães
Lamego
Esposende
Chaves
Arcos de Valdevez
Espinho
Viseu
Ponte de Lima
Pinhao
Santa Maria da Feira
Curia
Penafiel
Mesao Frio
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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