HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$347+ 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 7/26. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — LIS
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
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

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 February 12, 2026.

This American Airlines deal was found by Cheapflights users on 2/10. 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.
Sun 4/126:00 am
MKE
-
LIS
1 stop21h 05m
American Airlines
Tue 4/216:35 am
LIS
-
MKE
2 stops17h 25m
American Airlines
Deal found 2/10$501
This FlightHub deal was found by Cheapflights users on 2/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:22 pm
MKE
-
LIS
2 stops22h 13m
Lufthansa
Wed 4/297:25 am
LIS
-
MKE
2 stops20h 50m
Lufthansa
Deal found 2/9$503
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Sun 4/127:50 am
MKE
-
LIS
2 stops21h 55m
United Airlines
Tue 4/2111:25 am
LIS
-
MKE
2 stops39h 53m
United Airlines
Deal found 2/10$508
This oojo deal was found by Cheapflights users on 2/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/171:53 pm
MKE
-
LIS
2 stops27h 17m
British Airways
Sun 4/265:10 pm
LIS
-
MKE
2 stops32h 56m
British Airways
Deal found 2/9$509
This Delta deal was found by Cheapflights users on 2/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/812:27 pm
MKE
-
LIS
2 stops20h 08m
Delta
Mon 4/135:35 am
LIS
-
MKE
2 stops19h 41m
Delta
Deal found 2/12$514
This KAYAK deal was found by Cheapflights users on 2/9. 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.
Sat 5/21:46 pm
MKE
-
LIS
2 stops26h 29m
Lufthansa
Sat 5/95:05 am
LIS
-
MKE
2 stops18h 02m
Lufthansa
Deal found 2/9$516
This Gurufare deal was found by Cheapflights users on 2/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1712:27 pm
MKE
-
LIS
2 stops21h 43m
Scandinavian Airlines
Thu 3/265:00 am
LIS
-
MKE
2 stops18h 40m
Scandinavian Airlines
Deal found 2/11$531
This Delta deal was found by Cheapflights users on 2/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:15 am
MKE
-
LIS
1 stop18h 45m
Delta
Tue 3/105:00 am
LIS
-
MKE
2 stops20h 40m
Delta
Deal found 2/11$542
This Delta deal was found by Cheapflights users on 2/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/35:03 pm
MKE
-
LIS
2 stops16h 07m
Delta
Tue 3/1011:15 am
LIS
-
MKE
1 stop12h 25m
Delta
Deal found 2/11$555
This Delta deal was found by Cheapflights users on 2/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:05 pm
MKE
-
OPO
2 stops23h 00m
Delta
Tue 5/125:00 am
OPO
-
MKE
2 stops17h 06m
Delta
Deal found 2/10$578
This Orbitz deal was found by Cheapflights users on 2/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:51 pm
MKE
-
OPO
2 stops22h 59m
Lufthansa
Tue 5/1212:05 pm
OPO
-
MKE
2 stops16h 40m
Lufthansa
Deal found 2/10$606
This Iberia deal was found by Cheapflights users on 2/9. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:00 pm
MKE
-
OPO
2 stops24h 00m
Iberia
Tue 5/128:40 pm
OPO
-
MKE
2 stops26h 31m
Iberia
Deal found 2/9$608

Find flight deals from Milwaukee to Portugal

Keep the following information in mind while searching for Milwaukee to Portugal flight deals. Data was last updated February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$501
(American Airlines)

One-way from

$347
(Orbitz)

Popular in

July

Cheapest in

January

Average price

$710
Provider with most accurate pricing for Milwaukee-Mitchell-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Lisbon Humberto Delgado flights.
Search Deals
From Milwaukee-Mitchell to Portugal
Search Deals
One-way flight from Milwaukee-Mitchell to Portugal
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($274 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 12, 2026.
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

Sun 4/12

6:00 am-9:05 am

1 stop21h 05m

Lisbon Humberto Delgado

Tue 4/21

6:35 am-6:00 pm

2 stops17h 25m

$501

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 4/12

7:50 am-11:45 am

2 stops21h 55m

Lisbon Humberto Delgado

Tue 4/21

11:25 am-9:18 pm

2 stops39h 53m

$508

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 4/17

1:53 pm-11:10 pm

2 stops27h 17m

Lisbon Humberto Delgado

Sun 4/26

7:20 am-8:06 pm

2 stops18h 46m

$509

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 4/8

12:27 pm-2:35 pm

2 stops20h 08m

Lisbon Humberto Delgado

Mon 4/13

5:35 am-7:16 pm

2 stops19h 41m

$514

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sat 5/2

1:46 pm-10:15 pm

2 stops26h 29m

Lisbon Humberto Delgado

Sat 5/9

5:05 am-5:07 pm

2 stops18h 02m

$516

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 4/22

7:22 pm-10:45 pm

2 stops21h 23m

Lisbon Humberto Delgado

Wed 4/29

5:05 am-5:55 pm

2 stops18h 50m

$530

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Mon 3/2

7:00 am-9:00 am

1 stop20h 00m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-4:06 pm

2 stops16h 06m

$542

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 3/3

1:21 pm-11:20 am

2 stops15h 59m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-8:40 pm

2 stops20h 40m

$546

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 3/10

9:44 am-10:15 am

2 stops19h 31m

Lisbon Humberto Delgado

Tue 3/17

6:10 am-10:43 pm

2 stops21h 33m

$551

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 3/1

7:15 am-8:00 am

1 stop18h 45m

Lisbon Humberto Delgado

Tue 3/10

11:15 am-6:40 pm

1 stop12h 25m

$551

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 30 results
1
2
3

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, February is the cheapest month in which you can book a flight from Milwaukee to Portugal (average of $383). Flying from Milwaukee to Portugal in June is currently the most expensive (average of $685). 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.

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 February 12, 2026.
Read reviews from past customers who have flown Delta, United Airlines, and American 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
7.9
Good
8,179 reviews

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,179 reviews
Delta
7.9
Good
8,179 reviews

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,276 reviews
Delta
7.9
Good
8,179 reviews

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,267 reviews
Delta
7.9
Good
8,179 reviews

Boarding

8.1

Food

7.2

Overall

7.9

Entertainment

7.8

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 American Airlines, United Airlines, and British Airways fly from Milwaukee to Portugal in about 21h 05m. The time it takes to get you to your destination can typically vary by up to 6h 12m. Milwaukee and Portugal are separated by a distance of 3967 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Most travelers choose Milwaukee-Mitchell - Lisbon Humberto Delgado, Milwaukee-Mitchell - Porto or Milwaukee-Mitchell - Lajes 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, February is the cheapest month in which you can book a flight from Milwaukee to Portugal (average of $383). Flying from Milwaukee to Portugal in June is currently the most expensive (average of $685). 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 Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Charles de Gaulle flights
O'Hare Intl to Athens flights
O'Hare Intl to Dublin flights
O'Hare Intl to Madrid flights
O'Hare Intl to Barcelona-El Prat flights
O'Hare Intl to Gatwick flights
O'Hare Intl to Istanbul flights
Minneapolis to Heathrow flights
O'Hare Intl to Orly flights
O'Hare Intl to London City flights
O'Hare Intl to Lisbon flights
O'Hare Intl to Stansted flights
O'Hare Intl to Frederic Chopin flights
O'Hare Intl to Amsterdam flights
Minneapolis to Dublin flights
Minneapolis to Charles de Gaulle flights
O'Hare Intl to Frankfurt flights
O'Hare Intl to Krakow flights
O'Hare Intl to Malpensa flights
O'Hare Intl to Zurich flights
O'Hare Intl to Edinburgh flights
O'Hare Intl to Naples flights
Minneapolis to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Munich flights
O'Hare Intl to Copenhagen flights
O'Hare Intl to Luton flights
O'Hare Intl to Keflavik Intl flights
Minneapolis to Gatwick flights
Minneapolis to Amsterdam flights
Minneapolis to London City flights
O'Hare Intl to Linate flights
O'Hare Intl to Vienna flights
Minneapolis to Stansted flights
O'Hare Intl to Sabiha Gokcen flights
O'Hare Intl to Beauvais-Tille flights
O'Hare Intl to Vicenza flights
O'Hare Intl to Oslo Gardermoen flights
O'Hare Intl to Bruxelles-National flights
Minneapolis to Orly flights
O'Hare Intl to Ciampino flights
O'Hare Intl to Belgrade flights
Minneapolis to Keflavik Intl flights
Minneapolis to Athens flights
Minneapolis to Lisbon flights
Minneapolis to Madrid flights
Minneapolis to Barcelona-El Prat flights
O'Hare Intl to Florence flights
Minneapolis to Copenhagen flights

Top 3 airlines flying from Milwaukee to Portugal

Discover the top 3 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 February 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$509Average$705FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$509Average$1,128FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$703Average$1,278FlexibilityNo 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.
Site
©2026 Cheapflights