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Find cheap flights from Milwaukee to Portugal from $431

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Milwaukee to Portugal departing on 8/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 7/1
Mon 7/8

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Best Portugal Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Lisbon
Lisbon1 stop$530
Ponta Delgada
Ponta Delgada1 stop$1,071

Good to know

Low season

February

High season

October

Cheapest flight

$431
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Milwaukee to Porto

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Milwaukee to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Milwaukee to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Milwaukee to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portugal from Milwaukee is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Milwaukee to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portugal with an airline and back to Milwaukee with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Milwaukee to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portugal from Milwaukee up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Portugal

  • Morning departure is around 12% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

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.
8.0
DeltaOverall score based on 10410 reviews
8.6Crew
7.9Comfort
7.4Food
8.2Boarding
8.0Entertainment
Airline reviews

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

10.0 ExcellentBarb, Jun 2024MSP - JFK
Read more about Delta reviews

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

I've flown many many times on Northwest and then Delta. The crew on this flight were absolutely the best I've had the pleasure of being looked after by.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Half the bathrooms assigned to economy were out of action

Not worth the premium paid for the first class ticket

Not worth the price of premium class ticket paid, felt more like steerage.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

I flew Delta last week and United Airlines is a poor substitute mechanical problems with the plane and shitty food among other things made my travel experience what’s become to be expected from United no way is it ever worth the money they make us pay

I had a great flight. Everything went smoothly and the flight arrived early.

Well....let's start from the point that I had to stay in airport for 12 hours instead of 2 that was scheduled. Poor company and even worst customer service. Never again....

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

We liked the fully reclinable seats. Had center seats, so it was difficult to talk to spouse. Crew was great

Aisle chair was good and liked the foot bar preventing you from putting your foot in the isle, The breakfast on this international flight to Zurich was horrible (Europeans, specially, used to good food) may make this a dealbreaker for booking with United Airlines again. I agreed with my Spanish fellow passenger.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

They cancelled two flight and got us onto another airline, which was also delayed.

Nothing, terrible travel experience due to weather and maintenance delays and was left stranded in Austin.

Missed connection from Philadelphia to London because flight from DC was seriously delayed. Was re-routed the next day (had to pay for hotel) to Zurich and was given a main cabin middle seat while I had paid for premium. Great job AA!!!

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

28 hour delay at Fort Worth/Dallas airport, part due to weather which was unavoidable, but various other reasons - no pilot, no fa, mechanical problem, plane too small, too big, crew out of flying time, seat configuration problems.... endless and hourly updates with a different excuse. Finally told us about 3.00 am, that the flight was delayed to hours later.

Experience was bad. 3.5 hour delay for a 2.5 hour trip. There was no r Transparency about the reason for the delay and it was done 30 mins at a time.

Original flight delayed several times and finally canceled at 2:30 in the morning. Staff at the gate was not very helpful in resolving problems or communicating why there were delays. I spent 34 hours at the airport before I could leave, they couldn't book me on another early flight even after canceling my original flight. Next flight available after my original flight was canceled was 22 hours later. I will never fly American Airlines again.

very very tight seats unfriendly crew who do not seem to care about the comfort of their passengers and do not know how to smile poor ground staff support at LHR and PHX

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

There were delays on both ends. It made it less than excellent. This plane was great though

Book cheap flights from Milwaukee to Portugal

Recent round-trip flight deals

11/13Wed
1 stopDelta
15h 45mMKE-LIS
11/19Tue
1 stopDelta
15h 46mLIS-MKE
$530
11/13Wed
1 stopDelta
15h 45mMKE-LIS
11/19Tue
2 stopsDelta
16h 55mLIS-MKE
$534
11/13Wed
3 stops
19h 00mMKE-LIS
11/19Tue
2 stops
16h 04mLIS-MKE
$615
10/20Sun
2 stopsAmerican Airlines
17h 09mMKE-LIS
11/8Fri
2 stopsAmerican Airlines
20h 34mLIS-MKE
$618
10/20Sun
1 stopAmerican Airlines
20h 14mMKE-LIS
11/8Fri
2 stopsAmerican Airlines
20h 34mLIS-MKE
$620
8/11Sun
2 stopsUnited Airlines
20h 20mMKE-LIS
8/20Tue
2 stopsUnited Airlines
27h 16mLIS-MKE
$694
10/5Sat
2 stopsUnited Airlines
34h 38mMKE-LIS
10/26Sat
2 stopsUnited Airlines
17h 11mLIS-MKE
$734
10/9Wed
2 stopsLufthansa
21h 59mMKE-LIS
10/15Tue
2 stopsLufthansa
30h 48mLIS-MKE
$743
10/9Wed
3 stops
16h 24mMKE-LIS
10/15Tue
2 stops
16h 50mLIS-MKE
$846
9/1Sun
1 stopLufthansa
14h 16mMKE-LIS
9/13Fri
1 stopLufthansa
13h 20mLIS-MKE
$1,065

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Recent one-way flight deals

8/15Thu
3 stops
46h 10mMKE-OPO
$431
8/15Thu
3 stops
56h 20mMKE-PDL
$452
8/15Thu
2 stopsAir France
15h 41mMKE-OPO
$546
8/15Thu
2 stops
18h 39mMKE-PDL
$616
6/23Sun
2 stopsDelta
15h 22mMKE-LIS
$789
6/19Wed
2 stopsDelta
15h 39mMKE-LIS
$802
6/21Fri
3 stopsAir Canada
15h 09mMKE-LIS
$878
6/19Wed
3 stopsAir Canada
16h 19mMKE-LIS
$966
8/15Thu
1 stopUnited Airlines
9h 10mMKE-PDL
$1,206
8/15Thu
1 stopUnited Airlines
12h 50mMKE-OPO
$3,767

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Last minute flights from Milwaukee to Portugal

Last minute flight, train and bus deals

6/3Mon
multi-stopLufthansa
22h 19mMKE-LIS
6/10Mon
multi-stopLufthansa
32h 10mLIS-MKE
$946
6/3Mon
multi-stop
19h 30mMKE-LIS
6/10Mon
multi-stop
36h 20mLIS-MKE
$953
6/3Mon
multi-stop
31h 09mMKE-LIS
6/10Mon
multi-stop
14h 15mLIS-MKE
$1,284
6/3Mon
multi-stopLufthansa
14h 35mMKE-LIS
6/10Mon
multi-stopLufthansa
18h 37mLIS-MKE
$1,333
6/3Mon
multi-stop
31h 09mMKE-LIS
6/10Mon
multi-stop
33h 57mLIS-MKE
$1,383

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Milwaukee - Portugal Flights

Departure:

Milwaukee (MKE)United States

Cabin classes: