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Portugal

$424+ 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 11/29. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — LIS
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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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 November 13, 2025.

This Virgin Atlantic deal was found by Cheapflights users on 11/12. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/127:00 amMKE - LIS
1 stop19h 00mVirgin Atlantic
Fri 12/1910:55 amLIS - MKE
1 stop16h 31mVirgin Atlantic
Deal found 11/12$606
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/128:40 amMKE - LIS
2 stops19h 35mUnited Airlines
Fri 12/1911:20 amLIS - MKE
2 stops35h 47mUnited Airlines
Deal found 11/12$688
This Delta deal was found by Cheapflights users on 11/12. 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.
Fri 12/127:00 amMKE - LIS
1 stop19h 00mDelta
Fri 12/195:30 amLIS - MKE
2 stops20h 49mDelta
Deal found 11/12$702
This Delta deal was found by Cheapflights users on 11/12. 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.
Sat 12/611:41 amMKE - OPO
2 stops16h 49mDelta
Fri 12/126:30 amOPO - MKE
2 stops20h 51mDelta
Deal found 11/12$1,210
This Priceline deal was found by Cheapflights users on 11/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1512:05 pmMKE - LIS
2 stops17h 20mMultiple Airlines
Sun 11/166:40 pmLIS - MKE
2 stops29h 03mMultiple Airlines
Deal found 11/11$1,519
This Air France deal was found by Cheapflights users on 11/12. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:25 pmMKE - LIS
2 stops15h 45mMultiple Airlines
Sun 1/45:00 amLIS - MKE
2 stops17h 43mMultiple Airlines
Deal found 11/12$1,557
This KLM deal was found by Cheapflights users on 11/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:35 amMKE - LIS
1 stop16h 20mKLM
Sun 1/410:00 amLIS - MKE
1 stop15h 43mKLM
Deal found 11/12$1,784
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:34 amMKE - LIS
3 stops28h 26mMultiple Airlines
Fri 12/192:35 pmLIS - MKE
3 stops32h 32mMultiple Airlines
Deal found 11/12$1,797
This TAP AIR PORTUGAL deal was found by Cheapflights users on 11/11. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/155:45 pmMKE - OPO
2 stops18h 20mMultiple Airlines
Mon 11/1710:55 amOPO - MKE
2 stops29h 24mMultiple Airlines
Deal found 11/11$1,824
This American Airlines deal was found by Cheapflights users on 11/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1510:08 amMKE - LIS
1 stop16h 57mAmerican Airlines
Sun 11/1611:05 amLIS - MKE
2 stops18h 57mAmerican Airlines
Deal found 11/11$1,903
This TAP AIR PORTUGAL deal was found by Cheapflights users on 11/12. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:30 amMKE - OPO
2 stops21h 20mMultiple Airlines
Fri 12/126:35 pmOPO - MKE
1 stop22h 09mMultiple Airlines
Deal found 11/12$2,066

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 November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$484
(United Airlines)

One-way from

$424
(Air Canada)

Popular in

July

Cheapest in

November

Average price

$742
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. 17% potential increase in price ($239 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($59 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 November 13, 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

Thu 1/1

1:05 pm-8:00 am

1 stop12h 55m

Lisbon Humberto Delgado

Wed 1/14

11:25 am-10:42 pm

2 stops17h 17m

$488

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 1/7

3:20 pm-9:20 am

2 stops36h 00m

Lisbon Humberto Delgado

Wed 1/14

11:20 am-3:43 pm

2 stops34h 23m

$489

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 1/7

5:39 pm-8:10 am

1 stop32h 31m

Lisbon Humberto Delgado

Wed 1/14

11:20 am-3:43 pm

2 stops34h 23m

$494

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Mon 2/2

2:00 pm-8:00 am

1 stop12h 00m

Lisbon Humberto Delgado

Sat 2/28

5:00 am-8:23 pm

2 stops21h 23m

$496

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Mon 2/2

5:00 am-8:10 am

2 stops21h 10m

Lisbon Humberto Delgado

Sat 2/28

5:00 am-6:48 pm

2 stops19h 48m

$496

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 2/6

11:20 am-8:00 am

1 stop14h 40m

Lisbon Humberto Delgado

Sat 2/28

5:00 am-8:23 pm

2 stops21h 23m

$496

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 2/3

6:00 am-8:00 am

1 stop20h 00m

Lisbon Humberto Delgado

Sat 2/28

5:00 am-8:23 pm

2 stops21h 23m

$496

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 2/8

11:30 am-8:10 am

2 stops14h 40m

Lisbon Humberto Delgado

Sat 2/28

5:00 am-8:55 pm

2 stops21h 55m

$496

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 2/8

8:50 am-8:00 am

1 stop17h 10m

Lisbon Humberto Delgado

Sat 2/28

5:00 am-8:23 pm

2 stops21h 23m

$496

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 2/6

8:33 am-8:10 am

2 stops17h 37m

Lisbon Humberto Delgado

Sat 2/28

5:00 am-8:55 pm

2 stops21h 55m

$496

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 17 results
1
2

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, December is the cheapest month in which you can book a flight from Milwaukee to Portugal (average of $411). Flying from Milwaukee to Portugal in June is currently the most expensive (average of $695). 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 November 13, 2025.

It’s optimal to fly from Milwaukee to Portugal in the evening. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight in the afternoon.

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 November 13, 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
7.9
Good
8,008 reviews

Food

7.3

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
8,008 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

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.
KLM
7.7
Good
1,410 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
9,015 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

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
11,049 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Overall

7.9

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.9

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 KLM, United Airlines, and Delta fly from Milwaukee to Portugal in about 12h. The time it takes to get you to your destination can typically vary by up to 24h. 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, December is the cheapest month in which you can book a flight from Milwaukee to Portugal (average of $411). Flying from Milwaukee to Portugal in June is currently the most expensive (average of $695). 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

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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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$555Average$1,151FlexibilityNo cancel feeOn-time69%
KLMCheapest$670Average$1,190FlexibilityNo cancel feeOn-time75%
DeltaCheapest$699Average$1,230FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$778Average$1,190FlexibilityNo cancel feeOn-time71%

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