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Portugal

$517+ 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
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$737
(Booking.com)

One-way from

$517
(Cheapflightsfares)

Popular in

July

Cheapest in

November

Average price

$1,882
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. 22% potential increase in price ($335 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($65 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 31, 2025.

This Gotogate deal was found by Cheapflights users on 7/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/103:49 pmMKE - LIS
2 stops35h 31mMultiple Airlines
Sun 11/235:00 amLIS - MKE
2 stops41h 32mMultiple Airlines
Deal found 7/29$615
This Booking.com deal was found by Cheapflights users on 7/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:42 pmMKE - OPO
2 stops24h 03mLufthansa
Fri 1/96:00 amOPO - MKE
2 stops40h 35mLufthansa
Deal found 7/29$737
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/306:00 amMKE - LIS
2 stops21h 20mUnited Airlines
Wed 10/1512:15 pmLIS - MKE
2 stops16h 16mUnited Airlines
Deal found 7/31$751
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Thu 10/168:20 amMKE - OPO
2 stops25h 25mUnited Airlines
Sun 10/2612:40 pmOPO - MKE
2 stops31h 27mUnited Airlines
Deal found 7/30$811
This American Airlines deal was found by Cheapflights users on 7/31. 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 9/302:12 pmMKE - LIS
1 stop12h 53mAmerican Airlines
Wed 10/1511:05 amLIS - MKE
1 stop15h 13mAmerican Airlines
Deal found 7/31$814
This Lufthansa deal was found by Cheapflights users on 7/30. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2312:05 pmMKE - LIS
2 stops29h 25mLufthansa
Sat 11/292:10 pmLIS - MKE
2 stops56h 22mLufthansa
Deal found 7/30$823
This Air Canada deal was found by Cheapflights users on 7/30. 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.
Sat 9/1310:50 amMKE - LIS
2 stops40h 30mAir Canada
Mon 9/2212:50 pmLIS - MKE
2 stops28h 40mAir Canada
Deal found 7/30$937
This Air Canada deal was found by Cheapflights users on 7/30. 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.
Wed 8/277:00 amMKE - OPO
2 stops20h 20mAir Canada
Sun 9/711:20 amOPO - MKE
2 stops35h 50mAir Canada
Deal found 7/30$980
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/202:23 pmMKE - LIS
2 stops25h 12mAer Lingus
Fri 9/2610:15 pmLIS - MKE
2 stops27h 45mAer Lingus
Deal found 7/30$1,014
This Booking.com deal was found by Cheapflights users on 7/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/124:39 pmMKE - LIS
2 stops45h 26mBritish Airways
Fri 9/198:45 pmLIS - MKE
2 stops29h 15mBritish Airways
Deal found 7/29$1,039
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/167:00 amMKE - OPO
3 stops27h 15mMultiple Airlines
Sun 10/2612:40 pmOPO - MKE
3 stops25h 42mMultiple Airlines
Deal found 7/30$1,087
This oojo deal was found by Cheapflights users on 7/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/134:38 pmMKE - LIS
1 stop11h 37mTAP AIR PORTUGAL
Sat 9/2011:45 amLIS - MKE
1 stop33h 58mTAP AIR PORTUGAL
Deal found 7/30$1,150

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 July 31, 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

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Fri 12/26

5:42 pm-11:45 pm

2 stops24h 03m

Porto

Fri 1/9

6:00 am-4:35 pm

2 stops40h 35m

$737

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 9/30

6:00 am-9:20 am

2 stops21h 20m

Lisbon Humberto Delgado

Wed 10/15

12:15 pm-10:31 pm

2 stops16h 16m

$751

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Thu 10/16

8:20 am-3:45 pm

2 stops25h 25m

Porto

Sun 10/26

12:40 pm-3:07 pm

2 stops31h 27m

$811

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 9/30

2:12 pm-9:05 am

1 stop12h 53m

Lisbon Humberto Delgado

Wed 10/15

11:05 am-8:18 pm

1 stop15h 13m

$814

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sat 9/13

10:50 am-9:20 am

2 stops40h 30m

Lisbon Humberto Delgado

Mon 9/22

12:50 pm-11:30 am

2 stops28h 40m

$937

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sat 9/13

5:45 pm-9:20 am

2 stops33h 35m

Lisbon Humberto Delgado

Sat 9/20

6:15 am-8:46 pm

2 stops44h 31m

$947

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 8/26

5:45 pm-11:30 pm

2 stops23h 45m

Lisbon Humberto Delgado

Sun 8/31

6:15 am-8:46 pm

2 stops20h 31m

$977

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Wed 8/27

7:00 am-9:20 am

2 stops20h 20m

Porto

Sun 9/7

11:20 am-5:10 pm

2 stops35h 50m

$980

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sat 9/20

2:23 pm-9:35 pm

2 stops25h 12m

Lisbon Humberto Delgado

Fri 9/26

10:15 pm-8:00 pm

2 stops27h 45m

$1,014

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 9/12

4:39 pm-8:05 pm

2 stops45h 26m

Lisbon Humberto Delgado

Fri 9/19

8:45 pm-8:00 pm

2 stops29h 15m

$1,039

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 19 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, 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 $1,129). 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 July 31, 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 July 31, 2025.
Read reviews from past customers who have flown United Airlines, American Airlines, and Air Canada 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.
United Airlines
7.4
Good
8,900 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,900 reviews
United Airlines
7.4
Good
8,900 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,900 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
9,851 reviews
United Airlines
7.4
Good
8,900 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Aer Lingus
7.1
Good
1,192 reviews
United Airlines
7.4
Good
8,900 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
TAP AIR PORTUGAL
7.1
Good
1,933 reviews
United Airlines
7.4
Good
8,900 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 $517. However, be on the lookout for offers from Air Canada and Lufthansa, 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 $1,129). 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$555Average$1,154FlexibilityNo cancel feeOn-time69%
KLMCheapest$604Average$1,154FlexibilityNo cancel feeOn-time75%
DeltaCheapest$695Average$1,221FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$703Average$1,209FlexibilityNo cancel feeOn-time71%

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