HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$344+ Cheap flights from Milwaukee (MKE) to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — LIS
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Milwaukee to Portugal with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Milwaukee to Portugal

Keep the following information in mind while searching for Milwaukee to Portugal flight deals. Data was last updated septiembre 16, 2025.

Round-trip from

$505
(FlightHub)

One-way from

$344
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$1,345
From Milwaukee-Mitchell to Portugal
Search Deals
One-way flight from Milwaukee-Mitchell to Portugal
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($240 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($66 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Milwaukee to Portugal

Cheapest flights from Milwaukee to Portugal
Explore the most affordable flight options available from Milwaukee to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/46:05 amMKE - LIS
2 stops21h 15mUnited Airlines
mar. 11/115:00 amLIS - MKE
2 stops17h 32mUnited Airlines
Deal found 9/14$598
This American Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/312:18 pmMKE - OPO
2 stops20h 42mAmerican Airlines
vie. 11/78:20 amOPO - MKE
2 stops15h 23mAmerican Airlines
Deal found 9/16$608
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/33:49 pmMKE - LIS
2 stops15h 31mUnited Airlines
mar. 11/115:00 amLIS - MKE
2 stops18h 17mUnited Airlines
Deal found 9/14$621
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/23:49 pmMKE - LIS
2 stops17h 16mUnited Airlines
mar. 11/115:00 amLIS - MKE
2 stops17h 32mUnited Airlines
Deal found 9/14$625
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/3011:33 amMKE - LIS
2 stops15h 07mAmerican Airlines
jue. 11/66:30 amLIS - MKE
2 stops17h 57mAmerican Airlines
Deal found 9/15$628
This Expedia deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/296:28 pmMKE - LIS
2 stops15h 22mBritish Airways
vie. 11/146:30 amLIS - MKE
2 stops17h 13mBritish Airways
Deal found 9/13$638
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/510:53 amMKE - LIS
2 stops17h 22mUnited Airlines
mar. 11/115:00 amLIS - MKE
2 stops18h 17mUnited Airlines
Deal found 9/14$641
This KAYAK deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/45:52 pmMKE - LIS
2 stops23h 38mLufthansa
lun. 11/103:55 pmLIS - MKE
2 stops30h 37mLufthansa
Deal found 9/14$645
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/307:00 amMKE - LIS
2 stops22h 15mUnited Airlines
jue. 11/65:00 amLIS - MKE
2 stops19h 47mUnited Airlines
Deal found 9/15$653
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/33:49 pmMKE - LIS
2 stops15h 31mUnited Airlines
lun. 11/105:00 amLIS - MKE
2 stops23h 43mUnited Airlines
Deal found 9/14$668
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/315:51 pmMKE - OPO
1 stop10h 39mUnited Airlines
vie. 11/76:00 amOPO - MKE
2 stops17h 17mUnited Airlines
Deal found 9/16$672
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/302:45 pmMKE - LIS
2 stops15h 50mUnited Airlines
mié. 11/55:00 amLIS - MKE
2 stops18h 17mUnited Airlines
Deal found 9/14$675

Cheapflights Fare Finder

 
Customize your flight search to find flights from Milwaukee to Portugal 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, Cheapflights users made 2,558,603 searches. Data last updated septiembre 16, 2025.
Use the filters below to find and compare flights from Milwaukee to Portugal that are best for you.

Fly from

Milwaukee

Fly to

Portugal

Route

Depart

Return

Price

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

mié. 1/14

7:00 am-8:55 am

2 stops43h 55m

Lisbon Humberto Delgado

dom. 1/18

4:55 pm-8:12 pm

2 stops33h 17m

$535

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

mié. 3/4

8:29 am-9:30 am

2 stops19h 01m

Porto

mar. 3/17

12:35 pm-10:09 pm

2 stops14h 34m

$597

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

mar. 3/3

7:00 am-9:30 am

2 stops20h 30m

Porto

mié. 3/18

12:35 pm-10:09 pm

2 stops14h 34m

$597

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

mié. 3/4

8:29 am-9:30 am

2 stops19h 01m

Porto

jue. 3/19

12:35 pm-10:09 pm

2 stops14h 34m

$597

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

lun. 3/9

12:14 pm-9:30 am

2 stops16h 16m

Porto

mar. 3/17

12:35 pm-10:09 pm

2 stops14h 34m

$597

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

dom. 3/8

8:29 am-9:30 am

2 stops20h 01m

Porto

mié. 3/18

12:35 pm-9:49 am

2 stops26h 14m

$597

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

dom. 3/8

7:00 am-9:30 am

2 stops21h 30m

Porto

jue. 3/19

12:35 pm-9:49 am

2 stops26h 14m

$597

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

lun. 3/9

10:45 am-9:30 am

2 stops17h 45m

Porto

mié. 3/18

12:35 pm-10:09 pm

2 stops14h 34m

$597

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

dom. 3/8

8:29 am-9:30 am

2 stops20h 01m

Porto

mar. 3/17

12:35 pm-9:49 am

2 stops26h 14m

$597

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

mar. 3/3

7:00 am-9:30 am

2 stops20h 30m

Porto

jue. 3/19

12:35 pm-10:09 pm

2 stops14h 34m

$597

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 45 results
1
2
3
...
5

Best time to book a flight from Milwaukee to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Milwaukee with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Milwaukee to Portugal

What is the cheapest month to book a flight from Milwaukee to Portugal?

Currently, January is the cheapest month in which you can book a flight from Milwaukee to Portugal (average of $612). Flying from Milwaukee to Portugal in June is currently the most expensive (average of $1,127). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MKE to PT?

Find hourly flight availability from Milwaukee to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 16, 2025.

When flying from Milwaukee to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated septiembre 16, 2025.
Read reviews from past customers who have flown Delta, KLM, and United Airlines from Milwaukee to Portugal. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,386 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,924 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Milwaukee to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Milwaukee to Portugal?

    Milwaukee-Mitchell (MKE) is the airport you will fly out of if you book a flight from Milwaukee to Portugal. It is only a 6.4 mi journey to Milwaukee-Mitchell (MKE) from Milwaukee’s city center.

  • How long is the flight from Milwaukee to Portugal?

    Airlines like Scandinavian Airlines and United Airlines fly from Milwaukee to Portugal in about 19h 01m. The time it takes to get you to your destination can typically vary by up to 24h 54m. Milwaukee and Portugal are separated by a distance of 3900 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Milwaukee to Portugal one-way?

    The cheapest airline one-way is KLM, with whom users have recently found tickets for as low as $393. However, be on the lookout for offers from Delta and TAP AIR PORTUGAL, as they are both options that can get you from Milwaukee to Portugal for a low price.

  • What are the most popular routes from Milwaukee to Portugal?

    Most travelers choose Milwaukee-Mitchell - Lisbon Humberto Delgado, Milwaukee-Mitchell - Porto or Milwaukee-Mitchell - Ponta Delgada Nordela when deciding on the best route from Milwaukee to Portugal.

  • Can I find deals for flights from Milwaukee to Portugal that include hotel bookings?

    Yes. In addition to deals on Milwaukee to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Milwaukee to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Milwaukee to Portugal.

  • Can I find deals for business class flights from Milwaukee to Portugal?

    Yes. Cheapflights offers flight deals from Milwaukee to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Milwaukee to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Milwaukee to Portugal (average of $612). Flying from Milwaukee to Portugal in June is currently the most expensive (average of $1,127). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Milwaukee to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Heathrow flights
O'Hare Intl to Charles de Gaulle flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Dublin flights
O'Hare Intl to Madrid flights
O'Hare Intl to Istanbul flights
O'Hare Intl to Frederic Chopin flights
O'Hare Intl to Orly flights
O'Hare Intl to Gatwick flights
Minneapolis to Heathrow flights
O'Hare Intl to Athens flights
O'Hare Intl to Barcelona-El Prat flights
Minneapolis to Dublin flights
O'Hare Intl to Frankfurt flights
O'Hare Intl to London City flights
O'Hare Intl to Amsterdam flights
O'Hare Intl to Lisbon flights
O'Hare Intl to Munich flights
O'Hare Intl to Bruxelles-National flights
O'Hare Intl to Zurich flights
Minneapolis to Charles de Gaulle flights
O'Hare Intl to Krakow flights
O'Hare Intl to Copenhagen flights
O'Hare Intl to Malpensa flights
O'Hare Intl to Keflavik Intl flights
Minneapolis to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Vienna flights
O'Hare Intl to Stansted flights
Minneapolis to Amsterdam flights
Minneapolis to Gatwick flights
O'Hare Intl to Luton flights
O'Hare Intl to Geneva flights
Minneapolis to London City flights
O'Hare Intl to Sabiha Gokcen flights
O'Hare Intl to Beauvais-Tille flights
Minneapolis to Lisbon flights
O'Hare Intl to Edinburgh flights
O'Hare Intl to Berlin flights
Minneapolis to Barcelona-El Prat flights
O'Hare Intl to Belgrade flights
O'Hare Intl to Linate flights
Minneapolis to Orly flights
O'Hare Intl to Prague flights
Minneapolis to Madrid flights
Minneapolis to Athens flights
Minneapolis to Vicenza flights
Minneapolis to Frankfurt flights
O'Hare Intl to Rovaniemi flights
Minneapolis to Keflavik Intl flights
Minneapolis to Istanbul flights

Top 4 airlines flying from Milwaukee to Portugal

Discover the top 4 airlines that operate flights from Milwaukee to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$555Average$1,153FlexibilityNo cancel feeOn-time69%
KLMCheapest$604Average$1,154FlexibilityNo cancel feeOn-time75%
DeltaCheapest$699Average$1,226FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$703Average$1,197FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.