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Cheap flights from Milwaukee to Portugal from $346

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 3/2. 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
6:33 pm - 2:55 pm
MKE
-
LIS
14h 22m
2 stops
Delta Logo
5:00 am - 7:16 pm
LIS
-
MKE
20h 16m
2 stops
$501Delta
Wed, Apr 8 - Wed, Apr 15
Delta Logo
10:53 am - 10:55 am
MKE
-
LIS
18h 02m
2 stops
Delta Logo
5:00 am - 5:58 pm
LIS
-
MKE
18h 58m
2 stops
$506Delta
Wed, Apr 22 - Wed, Apr 29
Delta Logo
10:53 am - 10:55 am
MKE
-
LIS
18h 02m
2 stops
Delta Logo
11:55 am - 11:57 pm
LIS
-
MKE
18h 02m
2 stops
$507Delta
Wed, Apr 22 - Wed, Apr 29
Multiple Airlines Logo
6:33 pm - 2:55 pm
MKE
-
LIS
14h 22m
2 stops
Multiple Airlines Logo
10:00 am - 8:25 pm
LIS
-
MKE
16h 25m
1 stop
$512Multiple Airlines
Wed, Apr 8 - Wed, Apr 15
Delta Logo
10:53 am - 10:55 am
MKE
-
LIS
18h 02m
2 stops
Delta Logo
12:45 pm - 7:16 pm
LIS
-
MKE
12h 31m
1 stop
$517Delta
Wed, Apr 22 - Wed, Apr 29
Iberia Logo
6:30 pm - 11:25 pm
MKE
-
LIS
46h 55m
2 stops
Iberia Logo
8:45 pm - 6:00 pm
LIS
-
MKE
27h 15m
2 stops
$528Iberia
Thu, Apr 23 - Mon, May 4
United Airlines Logo
1:25 pm - 10:15 am
MKE
-
LIS
15h 50m
2 stops
United Airlines Logo
5:00 am - 12:35 pm
LIS
-
MKE
36h 35m
2 stops
$536United Airlines
Tue, Mar 10 - Thu, Mar 19
Multiple Airlines Logo
1:15 pm - 10:35 am
MKE
-
LIS
16h 20m
2 stops
Multiple Airlines Logo
5:30 am - 6:40 pm
LIS
-
MKE
18h 10m
2 stops
$548Multiple Airlines
Tue, Mar 10 - Thu, Mar 19
KLM Logo
1:15 pm - 10:35 am
MKE
-
LIS
16h 20m
2 stops
KLM Logo
10:00 am - 8:06 pm
LIS
-
MKE
15h 06m
1 stop
$552KLM
Tue, Mar 10 - Thu, Mar 19
United Airlines Logo
5:51 pm - 9:30 am
MKE
-
OPO
10h 39m
1 stop
United Airlines Logo
6:00 am - 10:20 pm
OPO
-
MKE
22h 20m
2 stops
$587United Airlines
Tue, Mar 24 - Wed, Apr 1

Delta flights from Milwaukee to Portugal

Our best Delta deals on Milwaukee to Portugal flight tickets
Delta
Apr 8
MKE6:33 pmMilwaukee-Mitchell
14h 22m
2 stops
LIS2:55 pmLisbon Humberto Delgado
Apr 15
LIS5:00 amLisbon Humberto Delgado
20h 16m
2 stops
MKE7:16 pmMilwaukee-Mitchell
$501
Delta
Apr 22
MKE10:53 amMilwaukee-Mitchell
18h 02m
2 stops
LIS10:55 amLisbon Humberto Delgado
Apr 29
LIS5:00 amLisbon Humberto Delgado
18h 58m
2 stops
MKE5:58 pmMilwaukee-Mitchell
$506
Delta
Apr 22
MKE10:53 amMilwaukee-Mitchell
18h 02m
2 stops
LIS10:55 amLisbon Humberto Delgado
Apr 29
LIS11:55 amLisbon Humberto Delgado
18h 02m
2 stops
MKE11:57 pmMilwaukee-Mitchell
$507

American Airlines flights from Milwaukee to Portugal

Our best American Airlines deals on Milwaukee to Portugal flight tickets
American Airlines
Mar 10
MKE10:27 amMilwaukee-Mitchell
17h 38m
1 stop
LIS9:05 amLisbon Humberto Delgado
Mar 19
LIS10:55 amLisbon Humberto Delgado
17h 29m
2 stops
MKE11:24 pmMilwaukee-Mitchell
$561
American Airlines
Mar 10
MKE10:27 amMilwaukee-Mitchell
17h 38m
1 stop
LIS9:05 amLisbon Humberto Delgado
Mar 19
LIS10:55 amLisbon Humberto Delgado
17h 29m
2 stops
MKE11:24 pmMilwaukee-Mitchell
$562
American Airlines
Apr 9
MKE6:00 amMilwaukee-Mitchell
21h 05m
1 stop
LIS9:05 amLisbon Humberto Delgado
Apr 16
LIS8:25 amLisbon Humberto Delgado
17h 41m
2 stops
MKE8:06 pmMilwaukee-Mitchell
$617

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 24, 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

Wed 4/8

6:33 pm-2:55 pm

2 stops14h 22m

Lisbon Humberto Delgado

Wed 4/15

5:00 am-7:16 pm

2 stops20h 16m

$501

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 4/22

10:53 am-10:55 am

2 stops18h 02m

Lisbon Humberto Delgado

Wed 4/29

5:00 am-5:58 pm

2 stops18h 58m

$506

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 4/22

10:53 am-10:55 am

2 stops18h 02m

Lisbon Humberto Delgado

Wed 4/29

11:55 am-11:57 pm

2 stops18h 02m

$507

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 4/8

6:33 pm-2:55 pm

2 stops14h 22m

Lisbon Humberto Delgado

Wed 4/15

10:00 am-8:25 pm

1 stop16h 25m

$512

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 4/22

10:53 am-10:55 am

2 stops18h 02m

Lisbon Humberto Delgado

Wed 4/29

12:45 pm-7:16 pm

1 stop12h 31m

$517

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Thu 4/23

6:30 pm-11:25 pm

2 stops46h 55m

Lisbon Humberto Delgado

Mon 5/4

8:45 pm-6:00 pm

2 stops27h 15m

$528

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 3/10

1:25 pm-10:15 am

2 stops15h 50m

Lisbon Humberto Delgado

Thu 3/19

5:00 am-12:35 pm

2 stops36h 35m

$536

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 3/10

1:15 pm-10:35 am

2 stops16h 20m

Lisbon Humberto Delgado

Thu 3/19

5:30 am-6:40 pm

2 stops18h 10m

$548

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 3/10

1:15 pm-10:35 am

2 stops16h 20m

Lisbon Humberto Delgado

Thu 3/19

10:00 am-8:06 pm

1 stop15h 06m

$552

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 3/24

5:51 pm-9:30 am

1 stop10h 39m

Porto

Wed 4/1

6:00 am-10:20 pm

2 stops22h 20m

$587

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 17m

Direct flights

None
The fastest flight from Milwaukee to Portugal takes 14h 17m
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
9,345 reviews
Search United Airlines flights
American AirlinesPriceFrom $703Free CancellationRating
7.1
11,345 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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