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Cheap flights from Milwaukee General Mitchell to Porto

Compare Milwaukee General Mitchell to Porto flight deals

Find the cheapest month or even day of the year to fly to Porto

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Flight deals from Milwaukee General Mitchell to Porto

Looking for a cheap last-minute deal or the best round-trip flight from Milwaukee General Mitchell Airport to Porto Airport? If you want to travel next month, round-trip fares start from $879. Find the lowest prices on one-way and round-trip tickets right here.
Porto.$879 per passenger.Departing Wed, Aug 19, returning Wed, Aug 26.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Milwaukee General Mitchell on Wed, Aug 19, arriving in Porto.Inbound indirect flight with Delta, departing from Porto on Wed, Aug 26, arriving in Milwaukee General Mitchell.Price includes taxes and charges.From $879, select.
Porto.$939 per passenger.Departing Thu, Oct 1, returning Thu, Oct 8.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Milwaukee General Mitchell on Thu, Oct 1, arriving in Porto.Inbound indirect flight with Delta, departing from Porto on Thu, Oct 8, arriving in Milwaukee General Mitchell.Price includes taxes and charges.From $939, select.
Porto.$1,001 per passenger.Departing Thu, Jul 30, returning Wed, Aug 5.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Milwaukee General Mitchell on Thu, Jul 30, arriving in Porto.Inbound indirect flight with Delta, departing from Porto on Wed, Aug 5, arriving in Milwaukee General Mitchell.Price includes taxes and charges.From $1,001, select.
Porto.$1,195 per passenger.Departing Fri, Jul 17, returning Thu, Jul 23.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Milwaukee General Mitchell on Fri, Jul 17, arriving in Porto.Inbound indirect flight with Delta, departing from Porto on Thu, Jul 23, arriving in Milwaukee General Mitchell.Price includes taxes and charges.From $1,195, select.
Porto.$1,243 per passenger.Departing Thu, Dec 3, returning Fri, Jan 1.Round-trip flight with United.Outbound indirect flight with United, departing from Milwaukee General Mitchell on Thu, Dec 3, arriving in Porto.Inbound indirect flight with United, departing from Porto on Fri, Jan 1, arriving in Milwaukee General Mitchell.Price includes taxes and charges.From $1,243, select.
Porto.$3,810 per passenger.Departing Thu, Dec 3, returning Fri, Dec 4.Round-trip flight with Lufthansa.Outbound indirect flight with Lufthansa, departing from Milwaukee General Mitchell on Thu, Dec 3, arriving in Porto.Inbound indirect flight with Lufthansa, departing from Porto on Fri, Dec 4, arriving in Milwaukee General Mitchell.Price includes taxes and charges.From $3,810, select.

Find the cheapest month to fly from Milwaukee General Mitchell to Porto

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Milwaukee General Mitchell to Porto flights are currently cheapest in August.
Jul
from $1,195
Aug
from $879
Sep
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Oct
from $939
Nov
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Dec
from $3,810
Jan
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Feb
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Mar
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Apr
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May
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Jun
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Milwaukee General Mitchell to Porto: Alternative routes

Compare routes from Milwaukee General Mitchell to Porto below. You may find an airport to fly into that's cheaper, faster, or easier than Porto.

Porto

12km from central Porto
ClosestCheapest
from $879
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Vila Real

76km from central Porto
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Viseu G. Lobato

81km from central Porto
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Milwaukee to Porto: Flight information

The things to know before you go.
Cheapest flight found$879
Cheapest month to flyAugust

Finding cheap flights from Milwaukee General Mitchell to Porto: Frequently asked questions

The best price we found for a round-trip flight from Milwaukee General Mitchell to Porto is $879. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Milwaukee General Mitchell to Porto. But we found flights with one or more stops from $879.
There are no flights flying from Milwaukee General Mitchell to Porto, as of July 2026.
The cheapest month to fly from Milwaukee General Mitchell to Porto is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Milwaukee General Mitchell Airport to Porto Airport on Wednesday, August 19, 2026.
No airlines currently offer direct flights between Milwaukee General Mitchell Airport and Porto Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Porto but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Porto is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Delta offers the cheapest flight tickets to Porto.

Traveling from Milwaukee General Mitchell Airport (MKE) to Porto Airport (OPO): what you need to know

  • Porto's timezone is UTC+0, which makes Porto six hours ahead of Milwaukee.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules to live by. Make sure you're at the airport on time to board your MKE to OPO flight.

  • During popular months like June, it's a good idea to get to the airport well in advance. Plan to arrive two hours before domestic departures and four hours ahead for international flights when you fly during a high season in general.

  • Pick a stopover if you'd like to break up your flight. Simply uncheck 'Direct flights only' to see all your options for tickets from Milwaukee General Mitchell Airport to Porto Airport. New York Newark Airport is a popular stopover on the MKE to OPO route.

Handy information about Milwaukee General Mitchell Airport (MKE)

  • You'll find MKE at 5300 S. Howell Avenue.

  • Of the flights that depart from Milwaukee General Mitchell Airport, 76% arrive on time at their destination.

  • Central Milwaukee to Milwaukee General Mitchell Airport is around 16 kilometers. Depending on traffic, it'll take you about 20 minutes to get there if you're ride-sharing, catching a cab or driving.

  • Catching public transport? Expect a trip time of around 40 minutes.

  • Looking for a handy hotel near MKE? If you're catching an early flight from Milwaukee General Mitchell Airport to Porto Airport, these stays will have you moments from your departure lounge:

Arriving at Porto Airport (OPO)

  • If you're arriving on a late Milwaukee General Mitchell Airport to Porto Airport flight, few things beat the convenience of staying close to the terminal. Grab your suitcases from the carousel and then be showered and relaxing soon after at one of these accommodation options near OPO:

  • Begin your adventure by picking up a Porto Airport rental car. Grab your wheels from Klass Wagen, Goldcar or Drive & Go and experience the lesser-explored corners of Porto and beyond.

  • Lock in the best rate by reserving your ride from Porto Airport around three weeks before your trip.

When to fly to Porto Airport (OPO)

  • August is the most popular month for flights from Milwaukee General Mitchell Airport to Porto Airport. To escape the crowds, visit Porto in March.

  • Book your flight from Milwaukee General Mitchell Airport to Porto Airport for August if you want to go to Porto during its warmest month. Expect temperatures of between 14ºC (57ºF) and 32ºC (90ºF).

  • If you want cooler conditions, search for a cheap ticket from MKE to OPO in January. Temperatures average between 3ºC (37ºF) and 14ºC (57ºF) then.

Explore more of Portugal

  • Lisbon is just one of the many places in Portugal waiting to be explored once you've seen Porto. Around 274 kilometers away to the south, popular attractions include Pasteis de Belém, belém and Real Mosteiro de Santa Maria de Belém.

  • Around 274 kilometers south of Porto, Amadora is another essential stop in Portugal. Experience the best of this destination with a visit to Roman Villa, Park Fantasia and Palácio dos Condes da Lousã.

Plan the rest of your trip from Milwaukee to Porto

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.