What airlines fly to Porto?

United Airlines, TAP AIR PORTUGAL and Iberia are the top three most popular airlines that fly to Porto from Milwaukee according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 10 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Milwaukee-Mitchell Airport to Porto Airport?

Prices for flights from Milwaukee-Mitchell Airport to Porto Airport refresh daily.

How old do you have to be to fly from Milwaukee-Mitchell 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 Milwaukee-Mitchell Airport 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.

$486 Cheap Flights from Milwaukee to Porto in 2025/26

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0 bags

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Find the cheapest flights from Milwaukee to Porto

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5:51 pm - 9:30 am

MKE

OPO

10h 39m1 stop

6:00 am - 10:43 pm

OPO

MKE

21h 43m2 stops

$486United Airlines

Mon, Mar 9 - Wed, Mar 18

5:51 pm - 9:30 am

MKE

OPO

10h 39m1 stop

1:45 pm - 6:43 pm

OPO

MKE

33h 58m2 stops

$489Lufthansa

Wed, Mar 11 - Tue, Mar 17

1:25 pm - 9:30 am

MKE

OPO

15h 05m2 stops

6:00 am - 10:30 am

OPO

MKE

33h 30m2 stops

$491United Airlines

Sun, Mar 8 - Thu, Mar 19

12:27 pm - 10:30 am

MKE

OPO

17h 03m2 stops

5:00 am - 8:06 pm

OPO

MKE

20h 06m2 stops

$493Multiple Airlines

Wed, Mar 11 - Mon, Mar 16

3:24 pm - 12:50 pm

MKE

OPO

16h 26m2 stops

12:30 pm - 9:50 pm

OPO

MKE

38h 20m2 stops

$494Lufthansa

Mon, Mar 9 - Sun, Mar 15

5:51 pm - 9:30 am

MKE

OPO

10h 39m1 stop

1:45 pm - 9:50 pm

OPO

MKE

37h 05m2 stops

$498Lufthansa

Sun, Mar 8 - Tue, Mar 17

5:51 pm - 9:30 am

MKE

OPO

10h 39m1 stop

12:35 pm - 10:30 am

OPO

MKE

26h 55m2 stops

$499United Airlines

Mon, Mar 9 - Tue, Mar 17

7:00 am - 10:30 am

MKE

OPO

22h 30m2 stops

11:20 am - 8:46 am

OPO

MKE

26h 26m2 stops

$505Delta

Thu, Mar 12 - Fri, Mar 20

5:51 pm - 10:25 pm

MKE

OPO

23h 34m2 stops

12:30 pm - 9:50 pm

OPO

MKE

38h 20m2 stops

$506Lufthansa

Sun, Mar 8 - Mon, Mar 16

5:51 pm - 9:30 am

MKE

OPO

10h 39m1 stop

12:35 pm - 10:18 am

OPO

MKE

26h 43m1 stop

$522Brussels Airlines

Mon, Mar 9 - Wed, Mar 18

Iberia flights from Milwaukee to Porto

Our best Iberia deals on Milwaukee to Porto flight tickets

Iberia

Apr 14

MKE10:13 amMilwaukee-Mitchell

23h 47m

2 stops

OPO4:00 pmPorto

Apr 21

OPO4:40 pmPorto

30h 49m

2 stops

MKE5:29 pmMilwaukee-Mitchell

$600

Find similar

Iberia

Jan 15

MKE1:04 pmMilwaukee-Mitchell

16h 41m

2 stops

OPO11:45 amPorto

Jan 19

OPO4:40 pmPorto

31h 46m

2 stops

MKE6:26 pmMilwaukee-Mitchell

$762

Find similar

Iberia

Apr 14

MKE10:13 amMilwaukee-Mitchell

43h 32m

2 stops

OPO11:45 amPorto

Apr 24

OPO8:20 amPorto

39h 09m

2 stops

MKE5:29 pmMilwaukee-Mitchell

$831

Find similar

British Airways flights from Milwaukee to Porto

Our best British Airways deals on Milwaukee to Porto flight tickets

British Airways

Apr 14

MKE3:13 pmMilwaukee-Mitchell

22h 17m

2 stops

OPO7:30 pmPorto

Apr 20

OPO9:10 pmPorto

28h 21m

2 stops

MKE7:31 pmMilwaukee-Mitchell

$825

Find similar

British Airways

Apr 11

MKE6:53 pmMilwaukee-Mitchell

43h 27m

2 stops

OPO8:20 pmPorto

Apr 23

OPO7:55 pmPorto

29h 36m

2 stops

MKE7:31 pmMilwaukee-Mitchell

$830

Find similar

British Airways

Apr 15

MKE3:13 pmMilwaukee-Mitchell

21h 52m

2 stops

OPO7:05 pmPorto

Apr 23

OPO7:55 pmPorto

29h 36m

2 stops

MKE7:31 pmMilwaukee-Mitchell

$835

Find similar

Fly from

Fly to

Route

Depart

Return

Price

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Mon 3/9

5:51 pm-9:30 am

1 stop10h 39m

Porto

Wed 3/18

6:00 am-10:43 pm

2 stops21h 43m

$486

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Wed 3/11

5:51 pm-9:30 am

1 stop10h 39m

Porto

Tue 3/17

1:45 pm-6:43 pm

2 stops33h 58m

$489

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sun 3/8

1:25 pm-9:30 am

2 stops15h 05m

Porto

Thu 3/19

6:00 am-10:30 am

2 stops33h 30m

$491

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Wed 3/11

12:27 pm-10:30 am

2 stops17h 03m

Porto

Mon 3/16

5:00 am-8:06 pm

2 stops20h 06m

$493

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Mon 3/9

3:24 pm-12:50 pm

2 stops16h 26m

Porto

Sun 3/15

12:30 pm-9:50 pm

2 stops38h 20m

$494

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sun 3/8

5:51 pm-9:30 am

1 stop10h 39m

Porto

Tue 3/17

1:45 pm-9:50 pm

2 stops37h 05m

$498

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Mon 3/9

5:51 pm-9:30 am

1 stop10h 39m

Porto

Tue 3/17

12:35 pm-10:30 am

2 stops26h 55m

$499

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Thu 3/12

7:00 am-10:30 am

2 stops22h 30m

Porto

Fri 3/20

11:20 am-8:46 am

2 stops26h 26m

$505

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sun 3/8

5:51 pm-10:25 pm

2 stops23h 34m

Porto

Mon 3/16

12:30 pm-9:50 pm

2 stops38h 20m

$506

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Mon 3/9

5:51 pm-9:30 am

1 stop10h 39m

Porto

Wed 3/18

12:35 pm-10:18 am

1 stop26h 43m

$522

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Milwaukee 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

Prices

Airlines

Can stopping save me money on Milwaukee to Porto flights?

You could potentially save up to 28% on your flight if you consider stops on a Milwaukee to Porto flight.

When to book flights from Milwaukee to Porto

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

Estimated round-trip price

Cheap Milwaukee to Porto (MKE to OPO) flight deals and tips

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

Fastest flight time	10h 39m
Direct flights	None

The fastest flight from Milwaukee to Porto takes 10h 39m

There are no direct flights from Milwaukee to Porto. There are no popular flight routes from Milwaukee to Porto.

Search flight deals

How far is Milwaukee-Mitchell to Porto by plane?
There are 3902.8 mi between Milwaukee-Mitchell and Porto. Flights usually cover this in 10h 39m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Milwaukee-Mitchell Airport to Porto Airport?
Prices for flights from Milwaukee-Mitchell Airport to Porto Airport refresh daily.
How old do you have to be to fly from Milwaukee-Mitchell 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 Milwaukee-Mitchell Airport 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.

Vila Nova de Gaia

Coimbra

Braga

Aveiro

Matosinhos

Guimarães

Esposende

Lamego

Chaves

Viseu

Espinho

Arcos de Valdevez

Pinhao

Ponte de Lima

Curia

Penafiel

Mesao Frio

Mira

Baiao

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

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

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

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

momondo helps you find the best flight between Milwaukee and Porto 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.

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Yes. momondo can track prices for Milwaukee 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.