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Cheap flights from Milwaukee to Portugal from $509

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Milwaukee to Portugal departing on 4/20. 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.
KLM Logo
7:10 am - 8:00 am
MKE
-
LIS
18h 50m
1 stop
KLM Logo
10:00 am - 8:25 pm
LIS
-
MKE
16h 25m
1 stop
$509KLM
Mon, Apr 20 - Mon, Apr 27
British Airways Logo
4:26 pm - 11:10 pm
MKE
-
LIS
24h 44m
2 stops
British Airways Logo
6:45 pm - 9:59 pm
LIS
-
MKE
33h 14m
2 stops
$511British Airways
Mon, Apr 20 - Mon, Apr 27
Multiple Airlines Logo
1:54 pm - 10:45 am
MKE
-
LIS
14h 51m
2 stops
Multiple Airlines Logo
10:00 am - 8:25 pm
LIS
-
MKE
16h 25m
1 stop
$563Multiple Airlines
Mon, Apr 20 - Mon, Apr 27
British Airways Logo
4:26 pm - 11:15 pm
MKE
-
LIS
24h 49m
2 stops
British Airways Logo
11:00 am - 11:40 pm
LIS
-
MKE
18h 40m
2 stops
$578British Airways
Wed, Apr 22 - Wed, Apr 29
Delta Logo
6:45 pm - 5:30 pm
MKE
-
LIS
17h 45m
2 stops
Delta Logo
5:00 am - 6:40 pm
LIS
-
MKE
18h 40m
2 stops
$579Delta
Wed, Mar 18 - Wed, Mar 25
Delta Logo
7:00 am - 8:40 am
MKE
-
LIS
20h 40m
1 stop
Delta Logo
5:00 am - 6:40 pm
LIS
-
MKE
18h 40m
2 stops
$599Delta
Wed, Mar 18 - Wed, Mar 25
United Airlines Logo
1:25 pm - 8:10 am
MKE
-
LIS
12h 45m
2 stops
United Airlines Logo
11:55 am - 10:28 pm
LIS
-
MKE
16h 33m
2 stops
$612United Airlines
Wed, Feb 18 - Sun, Feb 22
Lufthansa Logo
7:22 pm - 10:45 pm
MKE
-
LIS
21h 23m
2 stops
Lufthansa Logo
10:25 am - 5:55 pm
LIS
-
MKE
13h 30m
1 stop
$640Lufthansa
Wed, Apr 22 - Wed, Apr 29
Lufthansa Logo
11:39 am - 9:30 am
MKE
-
OPO
15h 51m
1 stop
Lufthansa Logo
12:30 pm - 10:28 pm
OPO
-
MKE
15h 58m
2 stops
$728Lufthansa
Wed, Feb 25 - Wed, Mar 4
United Airlines Logo
5:51 pm - 9:30 am
MKE
-
OPO
10h 39m
1 stop
United Airlines Logo
6:00 am - 9:49 pm
OPO
-
MKE
21h 49m
2 stops
$940United Airlines
Wed, Mar 25 - Mon, Apr 6

Delta flights from Milwaukee to Portugal

Our best Delta deals on Milwaukee to Portugal flight tickets
Delta
Mar 18
MKE6:45 pmMilwaukee-Mitchell
17h 45m
2 stops
LIS5:30 pmLisbon Humberto Delgado
Mar 25
LIS5:00 amLisbon Humberto Delgado
18h 40m
2 stops
MKE6:40 pmMilwaukee-Mitchell
$579
Delta
Feb 4
MKE7:05 amMilwaukee-Mitchell
18h 55m
1 stop
LIS8:00 amLisbon Humberto Delgado
Feb 8
LIS5:00 amLisbon Humberto Delgado
21h 23m
2 stops
MKE8:23 pmMilwaukee-Mitchell
$592
Delta
Feb 4
MKE7:00 amMilwaukee-Mitchell
19h 00m
2 stops
LIS8:00 amLisbon Humberto Delgado
Feb 8
LIS5:00 amLisbon Humberto Delgado
21h 09m
2 stops
MKE8:09 pmMilwaukee-Mitchell
$597

Lufthansa flights from Milwaukee to Portugal

Our best Lufthansa deals on Milwaukee to Portugal flight tickets
Lufthansa
Apr 22
MKE7:22 pmMilwaukee-Mitchell
21h 23m
2 stops
LIS10:45 pmLisbon Humberto Delgado
Apr 29
LIS10:25 amLisbon Humberto Delgado
13h 30m
1 stop
MKE5:55 pmMilwaukee-Mitchell
$640
Lufthansa
Feb 25
MKE11:39 amMilwaukee-Mitchell
15h 51m
1 stop
OPO9:30 amPorto
Mar 4
OPO12:30 pmPorto
15h 58m
2 stops
MKE10:28 pmMilwaukee-Mitchell
$728
Lufthansa
Apr 3
MKE7:22 pmMilwaukee-Mitchell
20h 33m
2 stops
LIS9:55 pmLisbon Humberto Delgado
Apr 11
LIS6:15 amLisbon Humberto Delgado
20h 33m
2 stops
MKE8:48 pmMilwaukee-Mitchell
$941

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 February 3, 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

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Mon 4/20

7:10 am-8:00 am

1 stop18h 50m

Lisbon Humberto Delgado

Mon 4/27

10:00 am-8:25 pm

1 stop16h 25m

$509

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Mon 4/20

4:26 pm-11:10 pm

2 stops24h 44m

Lisbon Humberto Delgado

Mon 4/27

6:45 pm-9:59 pm

2 stops33h 14m

$511

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Mon 4/20

1:54 pm-10:45 am

2 stops14h 51m

Lisbon Humberto Delgado

Mon 4/27

10:00 am-8:25 pm

1 stop16h 25m

$563

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 4/22

4:26 pm-11:15 pm

2 stops24h 49m

Lisbon Humberto Delgado

Wed 4/29

11:00 am-11:40 pm

2 stops18h 40m

$578

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 3/18

6:45 pm-5:30 pm

2 stops17h 45m

Lisbon Humberto Delgado

Wed 3/25

5:00 am-6:40 pm

2 stops18h 40m

$579

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 3/18

7:00 am-8:40 am

1 stop20h 40m

Lisbon Humberto Delgado

Wed 3/25

5:00 am-6:40 pm

2 stops18h 40m

$599

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 2/18

1:25 pm-8:10 am

2 stops12h 45m

Lisbon Humberto Delgado

Sun 2/22

11:55 am-10:28 pm

2 stops16h 33m

$612

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 4/22

7:22 pm-10:45 pm

2 stops21h 23m

Lisbon Humberto Delgado

Wed 4/29

10:25 am-5:55 pm

1 stop13h 30m

$640

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Wed 2/25

11:39 am-9:30 am

1 stop15h 51m

Porto

Wed 3/4

12:30 pm-10:28 pm

2 stops15h 58m

$728

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Wed 3/25

5:51 pm-9:30 am

1 stop10h 39m

Porto

Mon 4/6

6:00 am-9:49 pm

2 stops21h 49m

$940

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 35% 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

8h 55m

Direct flights

None
The fastest flight from Milwaukee to Portugal takes 8h 55m
There are no direct flights from Milwaukee to Portugal. There are no popular flight routes from Milwaukee to Portugal.
Search flight deals

  • 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
9,236 reviews
Search United Airlines flights
American AirlinesPriceFrom $703Free CancellationRating
7.2
11,216 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.

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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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