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Cheap flights from Milwaukee to Portugal from $390

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Milwaukee to Portugal departing on 9/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Milwaukee to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
7:10 am - 8:00 am
MKE
-
LIS
18h 50m
1 stop
Delta Logo
11:55 am - 11:53 pm
LIS
-
MKE
17h 58m
2 stops
$716Delta
月, 5月 4 - 日, 5月 10
Delta Logo
6:00 am - 10:45 am
MKE
-
LIS
22h 45m
2 stops
Delta Logo
5:00 am - 4:06 pm
LIS
-
MKE
17h 06m
2 stops
$720Delta
日, 5月 3 - 日, 5月 10
KLM Logo
7:10 am - 8:00 am
MKE
-
LIS
18h 50m
1 stop
KLM Logo
5:00 am - 4:24 pm
LIS
-
MKE
17h 24m
2 stops
$759KLM
水, 4月 22 - 水, 4月 29
Multiple Airlines Logo
11:56 am - 8:50 am
MKE
-
LIS
14h 54m
2 stops
Multiple Airlines Logo
5:00 am - 5:58 pm
LIS
-
MKE
18h 58m
2 stops
$763Multiple Airlines
水, 4月 22 - 水, 4月 29
Multiple Airlines Logo
11:56 am - 10:45 am
MKE
-
LIS
16h 49m
1 stop
Multiple Airlines Logo
12:45 pm - 7:16 pm
LIS
-
MKE
12h 31m
1 stop
$770Multiple Airlines
水, 4月 22 - 水, 4月 29
United Airlines Logo
3:25 pm - 10:45 pm
MKE
-
LIS
25h 20m
2 stops
United Airlines Logo
11:25 am - 2:27 pm
LIS
-
MKE
33h 02m
2 stops
$787United Airlines
火, 5月 5 - 火, 5月 12
American Airlines Logo
6:00 am - 9:05 am
MKE
-
LIS
21h 05m
1 stop
American Airlines Logo
8:25 am - 8:06 pm
LIS
-
MKE
17h 41m
2 stops
$793American Airlines
火, 5月 5 - 火, 5月 12
American Airlines Logo
6:00 am - 9:05 am
MKE
-
LIS
21h 05m
1 stop
American Airlines Logo
7:20 am - 6:00 pm
LIS
-
MKE
16h 40m
2 stops
$794American Airlines
水, 4月 22 - 水, 4月 29
KLM Logo
12:33 pm - 10:55 am
MKE
-
OPO
16h 22m
2 stops
KLM Logo
5:00 am - 3:09 pm
OPO
-
MKE
16h 09m
2 stops
$927KLM
火, 4月 21 - 土, 5月 9
United Airlines Logo
7:30 am - 7:00 am
MKE
-
OPO
17h 30m
2 stops
United Airlines Logo
12:15 pm - 12:09 am
OPO
-
MKE
17h 54m
2 stops
$1,062United Airlines
水, 8月 5 - 日, 8月 9

Delta flights from Milwaukee to Portugal

Our best Delta deals on Milwaukee to Portugal flight tickets
Delta
May 4
MKE7:10 amMilwaukee-Mitchell
18h 50m
1 stop
LIS8:00 amLisbon Humberto Delgado
May 10
LIS11:55 amLisbon Humberto Delgado
17h 58m
2 stops
MKE11:53 pmMilwaukee-Mitchell
$716
Delta
May 3
MKE6:00 amMilwaukee-Mitchell
22h 45m
2 stops
LIS10:45 amLisbon Humberto Delgado
May 10
LIS5:00 amLisbon Humberto Delgado
17h 06m
2 stops
MKE4:06 pmMilwaukee-Mitchell
$720
Delta
May 2
MKE5:05 pmMilwaukee-Mitchell
19h 40m
2 stops
LIS6:45 pmLisbon Humberto Delgado
May 10
LIS5:00 amLisbon Humberto Delgado
19h 03m
2 stops
MKE6:03 pmMilwaukee-Mitchell
$725

United Airlines flights from Milwaukee to Portugal

Our best United Airlines deals on Milwaukee to Portugal flight tickets
United Airlines
May 5
MKE3:25 pmMilwaukee-Mitchell
25h 20m
2 stops
LIS10:45 pmLisbon Humberto Delgado
May 12
LIS11:25 amLisbon Humberto Delgado
33h 02m
2 stops
MKE2:27 pmMilwaukee-Mitchell
$787
United Airlines
May 4
MKE10:20 amMilwaukee-Mitchell
18h 10m
2 stops
LIS10:30 amLisbon Humberto Delgado
May 11
LIS5:05 amLisbon Humberto Delgado
21h 43m
2 stops
MKE8:48 pmMilwaukee-Mitchell
$919
United Airlines
Aug 10
MKE2:54 pmMilwaukee-Mitchell
13h 36m
2 stops
LIS10:30 amLisbon Humberto Delgado
Aug 19
LIS12:20 pmLisbon Humberto Delgado
16h 16m
2 stops
MKE10:36 pmMilwaukee-Mitchell
$926

momondo 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, momondo users made 832,500 searches. Data last updated 4月 9, 2026.
Use the filters below to find and compare flights from Milwaukee to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

月 5/4

7:10 am-8:00 am

1 stop18h 50m

Lisbon Humberto Delgado

日 5/10

11:55 am-11:53 pm

2 stops17h 58m

$716

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

日 5/3

6:00 am-10:45 am

2 stops22h 45m

Lisbon Humberto Delgado

日 5/10

5:00 am-4:06 pm

2 stops17h 06m

$720

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

水 4/22

7:10 am-8:00 am

1 stop18h 50m

Lisbon Humberto Delgado

水 4/29

5:00 am-4:24 pm

2 stops17h 24m

$759

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

水 4/22

11:56 am-8:50 am

2 stops14h 54m

Lisbon Humberto Delgado

水 4/29

5:00 am-5:58 pm

2 stops18h 58m

$763
Quickest round-trip

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

水 4/22

11:56 am-10:45 am

1 stop16h 49m

Lisbon Humberto Delgado

水 4/29

12:45 pm-7:16 pm

1 stop12h 31m

$770

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

火 5/5

3:25 pm-10:45 pm

2 stops25h 20m

Lisbon Humberto Delgado

火 5/12

11:25 am-2:27 pm

2 stops33h 02m

$787

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

火 5/5

6:00 am-9:05 am

1 stop21h 05m

Lisbon Humberto Delgado

火 5/12

8:25 am-8:06 pm

2 stops17h 41m

$793

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

水 4/22

6:00 am-9:05 am

1 stop21h 05m

Lisbon Humberto Delgado

水 4/29

7:20 am-6:00 pm

2 stops16h 40m

$794

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

火 4/21

12:33 pm-10:55 am

2 stops16h 22m

Porto

土 5/9

5:00 am-3:09 pm

2 stops16h 09m

$927

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

水 8/5

7:30 am-7:00 am

2 stops17h 30m

Porto

日 8/9

12:15 pm-12:09 am

2 stops17h 54m

$1,062

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Milwaukee to Portugal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Milwaukee to Portugal flights?

You could potentially save up to 28% on your flight if you consider stops on a Milwaukee to Portugal flight.

Cheap Milwaukee to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Milwaukee to Portugal

Fastest flight time

14h 10m

Direct flights

None
The fastest flight from Milwaukee to Portugal takes 14h 10m
There are no direct flights from Milwaukee to Portugal. There are no popular flight routes from Milwaukee to Portugal.
Search flight deals

Frequently asked questions about flying from Milwaukee to Portugal

  • When did momondo last update prices for flights from Milwaukee-Mitchell Airport to Portugal?

    Prices for flights from Milwaukee-Mitchell Airport to Portugal are updated daily.

  • How many operators does momondo search for flights from Milwaukee-Mitchell Airport to Portugal?

  • How old do you have to be to fly from Milwaukee-Mitchell Airport to Portugal?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Milwaukee-Mitchell Airport to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The necessary travel and health documents for your Portugal trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Milwaukee to Portugal

Compare and see reviews for airlines that fly from Milwaukee to Portugal with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $509Free CancellationRating
7.4
9,554 reviews
Search United Airlines flights
American AirlinesPriceFrom $778Free CancellationRating
7.1
11,560 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Milwaukee to Portugal?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Milwaukee to Portugal. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Milwaukee to Portugal with flexible booking policies on momondo?

All flight searches from Milwaukee to Portugal on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Milwaukee to Portugal?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Milwaukee to Portugal.

I’m not ready to book a flight from Milwaukee to Portugal right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Milwaukee to Portugal flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Portugal trip

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1 adult
土 5/9
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Find better results for your trip to Portugal

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Popular flights according to clicks in the last 7 days on momondo
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