HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$556+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — LIS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$648
(Expedia)

One-way from

$556
(Ovago)

Popular in

July

Cheapest in

November

Average price

$1,473
From Milwaukee-Mitchell to Portugal
Search Deals
One-way flight from Milwaukee-Mitchell to Portugal
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($393 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($102 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 12, 2025.

This Expedia deal was found by Cheapflights users on 6/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:50 pmMKE - LIS
2 stops17h 10mBritish Airways
Mon 11/176:35 pmLIS - MKE
2 stops28h 53mBritish Airways
Deal found 6/9$648
This Gotogate deal was found by Cheapflights users on 6/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/135:40 pmMKE - LIS
2 stops23h 50mLufthansa
Tue 10/215:05 amLIS - MKE
2 stops23h 26mLufthansa
Deal found 6/9$674
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:04 pmMKE - LIS
2 stops14h 06mUnited Airlines
Mon 11/1710:15 amLIS - MKE
1 stop12h 54mUnited Airlines
Deal found 6/9$708
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1311:48 amMKE - OPO
1 stop12h 17mUnited Airlines
Tue 8/2612:50 pmOPO - MKE
2 stops28h 08mUnited Airlines
Deal found 6/9$729
This Air Canada deal was found by Cheapflights users on 6/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/125:31 pmMKE - OPO
2 stops33h 49mAir Canada
Tue 8/2612:50 pmOPO - MKE
2 stops34h 06mAir Canada
Deal found 6/9$734
This Delta deal was found by Cheapflights users on 6/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/611:15 amMKE - LIS
1 stop15h 45mDelta
Mon 11/1710:00 amLIS - MKE
1 stop15h 42mDelta
Deal found 6/9$760
This Lufthansa deal was found by Cheapflights users on 6/9. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/125:31 pmMKE - OPO
2 stops23h 49mLufthansa
Fri 8/296:00 amOPO - MKE
2 stops16h 56mLufthansa
Deal found 6/9$771
This Delta deal was found by Cheapflights users on 6/10. 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.
Sun 8/179:38 amMKE - OPO
2 stops29h 57mDelta
Mon 9/14:20 pmOPO - MKE
2 stops30h 05mDelta
Deal found 6/10$797
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 7/86:09 pmMKE - PDL
1 stop9h 31mUnited Airlines
Mon 9/811:00 amPDL - MKE
1 stop11h 27mUnited Airlines
Deal found 6/10$814
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/147:00 amMKE - LIS
2 stops20h 20mMultiple Airlines
Wed 9/245:05 amLIS - MKE
2 stops17h 51mMultiple Airlines
Deal found 6/10$840
This Air Canada deal was found by Cheapflights users on 6/12. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1710:45 amMKE - LIS
3 stops16h 35mAir Canada
Tue 8/2611:25 amLIS - MKE
3 stops16h 31mAir Canada
Deal found 6/12$863
This KAYAK deal was found by Cheapflights users on 6/9. 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.
Thu 8/141:06 pmMKE - OPO
2 stops16h 34mBritish Airways
Sat 8/308:15 amOPO - MKE
2 stops17h 45mBritish Airways
Deal found 6/9$887

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 June 12, 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 11/6

6:50 pm-6:00 pm

2 stops17h 10m

Lisbon Humberto Delgado

Mon 11/17

6:35 pm-5:28 pm

2 stops28h 53m

$648

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Mon 10/13

5:40 pm-11:30 pm

2 stops23h 50m

Lisbon Humberto Delgado

Tue 10/21

5:05 am-10:31 pm

2 stops23h 26m

$674

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Thu 11/6

12:04 pm-8:10 am

2 stops14h 06m

Lisbon Humberto Delgado

Mon 11/17

10:15 am-5:09 pm

1 stop12h 54m

$708

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Wed 8/13

11:48 am-6:05 am

1 stop12h 17m

Porto

Tue 8/26

12:50 pm-10:58 am

2 stops28h 08m

$729

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 8/12

5:31 pm-9:20 am

2 stops33h 49m

Porto

Tue 8/26

12:50 pm-4:56 pm

2 stops34h 06m

$734

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Thu 11/6

11:15 am-9:00 am

1 stop15h 45m

Lisbon Humberto Delgado

Mon 11/17

10:00 am-7:42 pm

1 stop15h 42m

$760

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 8/12

5:31 pm-11:20 pm

2 stops23h 49m

Porto

Fri 8/29

6:00 am-4:56 pm

2 stops16h 56m

$771

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sun 8/17

9:38 am-9:35 pm

2 stops29h 57m

Porto

Mon 9/1

4:20 pm-4:25 pm

2 stops30h 05m

$797

MilwaukeePonta Delgada

MKE - PDL

MKEPDL

Milwaukee-Mitchell

Tue 7/8

6:09 pm-8:40 am

1 stop9h 31m

Ponta Delgada Nordela

Mon 9/8

11:00 am-5:27 pm

1 stop11h 27m

$814

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 9/14

7:00 am-9:20 am

2 stops20h 20m

Lisbon Humberto Delgado

Wed 9/24

5:05 am-4:56 pm

2 stops17h 51m

$840

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 24 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, 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 $1,136). 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 June 12, 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.

Rainfall in Portugal by month

Plan your trip to Portugal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

Plan your trip to Portugal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 June 12, 2025.
Read reviews from past customers who have flown Delta, United Airlines and American Airlines from Milwaukee to Portugal. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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!
Air Canada
7.1
Good
9,531 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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!
Aer Lingus
7.1
Good
1,117 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

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.

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

    The cheapest airline one-way is Aer Lingus, with whom users have recently found tickets for as low as $556. However, be on the lookout for offers from Air Canada and American Airlines, 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 $1,136). 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 Athens flights
O'Hare Intl to Dublin flights
O'Hare Intl to Istanbul flights
Minneapolis to Dublin flights
O'Hare Intl to Madrid flights
O'Hare Intl to Frederic Chopin flights
O'Hare Intl to Orly flights
O'Hare Intl to Barcelona-El Prat flights
O'Hare Intl to Gatwick flights
Minneapolis to Heathrow flights
O'Hare Intl to London City flights
O'Hare Intl to Frankfurt flights
O'Hare Intl to Lisbon flights
Minneapolis to Charles de Gaulle flights
O'Hare Intl to Amsterdam flights
O'Hare Intl to Munich flights
O'Hare Intl to Krakow flights
O'Hare Intl to Zurich flights
O'Hare Intl to Malpensa flights
O'Hare Intl to Bruxelles-National flights
Minneapolis to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Keflavik Intl flights
Minneapolis to Amsterdam flights
O'Hare Intl to Edinburgh flights
O'Hare Intl to Copenhagen flights
Minneapolis to Gatwick flights
O'Hare Intl to Sabiha Gokcen flights
O'Hare Intl to Vienna flights
O'Hare Intl to Skopje flights
Minneapolis to London City flights
O'Hare Intl to Oslo Gardermoen flights
O'Hare Intl to Naples flights
O'Hare Intl to Beauvais-Tille flights
Minneapolis to Keflavik Intl flights
Minneapolis to Frankfurt flights
O'Hare Intl to Linate flights
O'Hare Intl to Stansted flights
O'Hare Intl to Belgrade flights
Minneapolis to Orly flights
O'Hare Intl to Berlin flights
O'Hare Intl to Luton flights
Minneapolis to Athens flights
O'Hare Intl to Sofia flights
Minneapolis to Oslo Gardermoen flights
O'Hare Intl to Vicenza flights
O'Hare Intl to Prague flights
O'Hare Intl to Tirana 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$555Average$894FlexibilityNo cancel feeOn-time69%
KLMCheapest$587Average$1,050FlexibilityNo cancel feeOn-time75%
DeltaCheapest$699Average$1,181FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$813Average$1,187FlexibilityNo 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.