$343 Find Cheap Flights from Milwaukee to Portugal - Compare and Save

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Cheap Flights from Milwaukee to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Lisbon
Lisbon2 stops$781
Porto
Porto2 stops$764
Ponta Delgada
Ponta Delgada2 stops$1,749
Lisbon
Lisbon2 stops$781
Porto
Porto2 stops$764
Ponta Delgada
Ponta Delgada2 stops$1,749
Booking Insights

Price, demand and travel trends for Milwaukee to Portugal flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from Milwaukee to Portugal cheaper or more expensive than last year?

Fares from Milwaukee to Portugal are running about 20% lower than they were around this time last year, averaging $911 round-trip.

What are the cheapest fares from Milwaukee to Portugal right now?

Here are the cheapest round-trip fares from Milwaukee to Portugal on KAYAK in the last week:

• Porto (OPO) from $764
• Lisbon Humberto Delgado (LIS) from $781
• Ponta Delgada Nordela (PDL) from $1,749

What’s the cheapest month to fly from Milwaukee to Portugal?

February is the cheapest time of year to fly, with average fares of $561. Prices are highest in May, when average flight costs increase to around $1,885.

Which airport in Portugal is the cheapest to fly to from Milwaukee?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Portugal are:

• Porto (OPO) (avg. price $920)
• Lisbon Humberto Delgado (LIS) (avg. price $1,056)
• Ponta Delgada Nordela (PDL) (avg. price $1,232)

What’s the cheapest day to fly from Milwaukee to Portugal?

Thursday tends to be the cheapest day to fly from Milwaukee to Portugal, while Saturday is the most expensive. Fares run about 28% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Milwaukee to Portugal?

Data from the past 12 months shows it's cheapest to fly to Portugal during the morning with average prices of $920. The afternoon is the most expensive time to fly, with average prices of $1,094.

Key details for Milwaukee to Portugal flights

Low season

December

Cheapest flight

$343
Beat the crowds with an average 69% drop in travelers.
The most popular month to fly with an average 49% increase in travelers.
One-way flight from Milwaukee to Lisbon

Your Milwaukee to Portugal flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Milwaukee to Portugal?

    Yes. Fares from Milwaukee to Portugal are low right now. As a rule of thumb, a round-trip under $819 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Milwaukee to Portugal?

    Over the past 12 months, round-trip fares from Milwaukee to Portugal have ranged from $819 to $1,235.

  • What are the main airports serving Portugal?

    Portugal has 15 airports. The three busiest are Lisbon Humberto Delgado (LIS) (70% of arrivals), Porto (OPO) (25%) and Ponta Delgada Nordela (PDL) (5%).

  • What airlines fly nonstop from Milwaukee to Portugal?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from Milwaukee to Portugal. One-stop options include Southwest and American Airlines.

  • Which cabin classes are available on flights from Milwaukee to Portugal?

    On flights from Milwaukee to Portugal you can book Economy Class or First Class.

  • What are some popular landmarks in Portugal?

    KAYAK travelers' favorite landmarks in Portugal include:

    • Chiado
    • Ribeira Square
    • Avenida dos Aliados
    • Commerce Square

Your guide to booking Milwaukee to Portugal flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for February when flights are typically cheapest and avoid May when prices are at their highest.
  • Flying on Thursday is usually the cheapest. Flights on Saturday cost about 28% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Porto (OPO) is the cheapest airport to fly into from Milwaukee. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Lisbon, which is the most popular destination in Portugal. From there, it's easy to continue on to other popular destinations such as Porto, Albufeira and Funchal.

Reviews of the top 3 airlines serving from Milwaukee to Portugal

 
Need help choosing which airline to fly with from Milwaukee to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8692 reviews
7.8Comfort
7.8Entertainment
8.5Crew
8.1Boarding
7.2Food
Airline reviews

The flights were on time; all went as expected which is a big positive! No delays! There was no food or drink service in any legs, which I understand due to the short flight time.

8.0 ExcellentCARMEN, Aug 2026
Read more Delta reviews

The flights were on time; all went as expected which is a big positive! No delays! There was no food or drink service in any legs, which I understand due to the short flight time.

The Delta assistsed services were awesome for my aunt. So very helpful.

Probably not the fault of Delta but there was delay after delay after delay and I ended up getting home 4 hours later then I should have at 1:30 in the morning

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

Very late arrival at PWM. Late jet getting to ATL. Equipment problem with aircraft - could not get enough water onto plane., Another delay getting FAA approval for flight with bottled H2O. Not the crew’s problem.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Pretty standard flight. Delta has a good selection of movies.

Overall Delta was amazing from automatically booking us on the next flight once we missed our connection due to a delay to the constant communication throughout the entire process. We will continue to fly Delta going forward more and pay a little more if needed.

The flight was so late that I had to change connecting flights, turning a five-hour trip into a fourteen-hour nightmare.

Despite being delayed, we would still give a high score for this flight experience. For the first time in quite some time we had excellent customer service throughout our entire round trip. The flight attendants were the most polite we have experienced in our last ten flights at least (non of which were Delta and include business class). The food offered was a better selection than most—we just didn’t have any of it. Overall, almost as good as flying used to be. Thank you to Delta.

Good, our flight was delayed but that was totally out of their control due to weather and a presidential visit.

Improve the food offerings and cabin seating. My wife would prefer to fly another airline, even with a connection for a more comfortable trip. A 737-8 should not be scheduled for a 6 hour segment, which turned into 7.5 hours due to the origin ground delay.

OK, I don’t expect much from coach class. Everything basically is pretty lousy. But at least I expect my bloody luggage to get from A to B. Tap Airlines lost my luggage and it has been more than 24 hours in Lisbon and they still have not located my luggage. On top of that, they are incredibly unhelpful. They feel actually dismissive. This lousy customer service.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Food was poorly timed and not good.. Hand held snacks, really. I kept asking for water and never got any. Service was rushed for a 7-hour flight.

The seats on the aircraft are like sitting in a rock. During the boarding process they recognize Active Duty Military, why don’t they recognize Retired Military. I’ve always preferred Delta, this flight confirmed why I still prefer Delta.

It was literally one of the worst travel experiences ever. My flight got delayed by over an hour and there was no communication of this from the gate staff. I realized it by checking the screen periodically. Once on board the flight attendants continued to serve alcohol to a man who was clearly already drunk and that was making a bunch of commotion. Never again will I fly United!

At least the delays were short. Business class, even in the new planes is very crowded now with crappy tray tables

All good except paid for wifi that did not work

Flight cancelled due to fog. No other flights available for 36 hours. Directed by United to book passage on another carrier, and submit receipts for reimbursement. Did that. United now states they will not reimburse. Currently out 2 grand.

My luggage was lost at some point during my layover between Chicago and LHR. I landed Tuesday morning, and did not get it until Thursday night. Ironically, the people at the ticket desk had added a “priority” sticker to my tracking tag.

The flight was delayed multiple times. Breakfast was not served and only an apology given and statement that we could find better pastries in Paris. Seats were extremely narrow and uncomfortable.

The flight could have actually taken place. Canceled flight and no option to rebook that day.

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

I bought wifi and most of the flight could not even use it my apps would just spin. I couldn't even listen to music. super frustrating.

Seating was horrible. Small seats. Access to flight information and extras very iser unfriendly. Kept losing internet after paying for it. Staff in madison was as unprofessional and unhelpful.

There were several different delays but we ended up being delayed a total of 40 mins or so. It was annoying we had a gate change which made it take longer to leave DFW, and we had to check our carry on. Ugh

The counter/baggage counter was busy and so many people missed flights. We got stuck sitting on the plane over 2 hours at the gate while they were doing an inspection is wrong. Many of us missed our connecting flights because of it.

Our flight was changed from Madison to DC to Madison to Charlotte.

We were told we had no flights before our flight was continually delayed then cancelled.

More options for your flight from Milwaukee to Portugal

Complete your trip to Portugal with a hotel stay or car rental