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Portugal

$425+ 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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — LIS
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$665

One-way from

$425
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$1,073
Provider with most accurate pricing for Milwaukee-Mitchell-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Lisbon Humberto Delgado flights.
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From Milwaukee-Mitchell to Portugal
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One-way flight from Milwaukee-Mitchell to Portugal
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Highest demand for flights based on searches. 11% potential increase in price ($143 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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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 May 1, 2025.

This deal was found by Cheapflights users on 4/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/196:08 pmMKE - PDL
1 stop9h 32mUnited Airlines
Wed 9/2411:00 amPDL - MKE
1 stop11h 27mUnited Airlines
Deal found 4/29$665
This American Airlines deal was found by Cheapflights users on 4/30. 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 11/153:11 pmMKE - OPO
2 stops14h 34mAmerican Airlines
Sat 11/228:40 pmOPO - MKE
2 stops19h 50mAmerican Airlines
Deal found 4/30$682
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Tue 9/302:53 pmMKE - LIS
1 stop12h 12mAmerican Airlines
Wed 10/156:35 amLIS - MKE
2 stops16h 38mAmerican Airlines
Deal found 4/30$700
This United Airlines deal was found by Cheapflights users on 4/30. 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 10/315:21 pmMKE - LIS
2 stops34h 59mUnited Airlines
Sun 11/911:00 amLIS - MKE
2 stops32h 43mUnited Airlines
Deal found 4/30$721
This Delta deal was found by Cheapflights users on 4/30. 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 10/3111:15 amMKE - LIS
1 stop16h 45mDelta
Sun 11/911:15 amLIS - MKE
1 stop13h 41mDelta
Deal found 4/30$760
This KLM deal was found by Cheapflights users on 4/30. 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.
Tue 9/3011:15 amMKE - LIS
1 stop17h 30mKLM
Wed 10/1512:45 pmLIS - MKE
1 stop12h 11mKLM
Deal found 4/30$798
This Air Canada deal was found by Cheapflights users on 4/30. 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 9/3010:50 amMKE - LIS
3 stops16h 30mMultiple Airlines
Wed 10/1511:25 amLIS - MKE
2 stops17h 16mMultiple Airlines
Deal found 4/30$812
This Air Canada deal was found by Cheapflights users on 4/30. 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 9/3010:50 amMKE - LIS
3 stops16h 30mAir Canada
Wed 10/1511:25 amLIS - MKE
3 stops17h 16mAir Canada
Deal found 4/30$819
This Booking.com deal was found by Cheapflights users on 5/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/165:40 pmMKE - OPO
2 stops23h 40mLufthansa
Sun 10/261:45 pmOPO - MKE
2 stops58h 02mLufthansa
Deal found 5/1$824
This KAYAK deal was found by Cheapflights users on 4/30. 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.
Fri 9/125:43 pmMKE - LIS
2 stops23h 27mBritish Airways
Thu 9/256:35 amLIS - MKE
2 stops16h 38mBritish Airways
Deal found 4/30$955
This United deal was found by Cheapflights users on 4/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/66:00 amMKE - OPO
1 stop18h 55mMultiple Airlines
Mon 7/2111:05 amOPO - MKE
2 stops39h 40mMultiple Airlines
Deal found 4/30$979
This United Airlines deal was found by Cheapflights users on 4/30. 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 7/611:48 amMKE - OPO
1 stop13h 07mUnited Airlines
Mon 7/219:00 amOPO - MKE
1 stop14h 21mUnited Airlines
Deal found 4/30$1,277

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 May 1, 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

MilwaukeePonta Delgada

MKE - PDL

MKEPDL

Milwaukee-Mitchell

Fri 9/19

6:08 pm-8:40 am

1 stop9h 32m

Ponta Delgada Nordela

Wed 9/24

11:00 am-5:27 pm

1 stop11h 27m

$665

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 9/30

2:53 pm-9:05 am

1 stop12h 12m

Lisbon Humberto Delgado

Wed 10/15

6:35 am-5:13 pm

2 stops16h 38m

$700

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 9/30

11:15 am-10:45 am

1 stop17h 30m

Lisbon Humberto Delgado

Wed 10/15

12:45 pm-6:56 pm

1 stop12h 11m

$798

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 9/30

10:50 am-9:20 am

3 stops16h 30m

Lisbon Humberto Delgado

Wed 10/15

11:25 am-10:41 pm

2 stops17h 16m

$812

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Thu 10/16

5:25 pm-3:55 pm

2 stops16h 30m

Porto

Sun 10/26

8:20 am-9:27 pm

2 stops18h 07m

$817

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 9/30

10:50 am-9:20 am

3 stops16h 30m

Lisbon Humberto Delgado

Wed 10/15

11:25 am-10:41 pm

3 stops17h 16m

$819

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Thu 10/16

5:40 pm-11:20 pm

2 stops23h 40m

Porto

Sun 10/26

1:45 pm-6:47 pm

2 stops58h 02m

$824

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 9/12

5:43 pm-11:10 pm

2 stops23h 27m

Lisbon Humberto Delgado

Thu 9/25

6:35 am-5:13 pm

2 stops16h 38m

$955

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sun 7/6

6:00 am-6:55 am

1 stop18h 55m

Porto

Mon 7/21

11:05 am-8:45 pm

2 stops39h 40m

$979

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 6/10

3:45 pm-9:20 am

2 stops35h 35m

Lisbon Humberto Delgado

Tue 6/17

11:25 am-10:22 am

2 stops28h 57m

$1,046

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 24 results
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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 $1,178). 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 May 1, 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 May 1, 2025.
Read reviews from past customers who have flown Delta, KLM and United 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
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
9,245 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 $491. However, be on the lookout for offers from American Airlines and United 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 $1,178). 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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Alternative routes for Milwaukee to Portugal

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$555Average$894FlexibilityNo cancel feeOn-time69%
KLMCheapest$587Average$1,050FlexibilityNo cancel feeOn-time75%
DeltaCheapest$699Average$1,162FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$813Average$1,190FlexibilityNo cancel feeOn-time71%

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