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Cheap flights from Milwaukee to Portugal from $540

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 4/10. 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.
American Airlines Logo
6:00 am - 9:05 am
MKE
-
LIS
21h 05m
1 stop
American Airlines Logo
6:35 am - 6:00 pm
LIS
-
MKE
17h 25m
2 stops
$670American Airlines
Wed, Apr 22 - Wed, Apr 29
Lufthansa Logo
7:41 pm - 10:15 pm
MKE
-
LIS
20h 34m
2 stops
Lufthansa Logo
5:05 am - 4:47 pm
LIS
-
MKE
17h 42m
2 stops
$671Lufthansa
Wed, Apr 22 - Wed, Apr 29
United Airlines Logo
7:41 pm - 9:55 pm
MKE
-
LIS
20h 14m
2 stops
United Airlines Logo
10:25 am - 5:49 pm
LIS
-
MKE
13h 24m
1 stop
$696United Airlines
Fri, Apr 24 - Thu, Apr 30
KLM Logo
5:48 pm - 3:30 pm
MKE
-
OPO
15h 42m
2 stops
KLM Logo
6:15 am - 4:24 pm
OPO
-
MKE
16h 09m
2 stops
$712KLM
Mon, Apr 27 - Tue, May 5
KLM Logo
1:55 pm - 10:55 am
MKE
-
OPO
15h 00m
2 stops
KLM Logo
6:15 am - 4:24 pm
OPO
-
MKE
16h 09m
2 stops
$720KLM
Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
1:59 pm - 10:45 am
MKE
-
LIS
14h 46m
1 stop
Multiple Airlines Logo
10:00 am - 8:25 pm
LIS
-
MKE
16h 25m
1 stop
$727Multiple Airlines
Fri, Apr 24 - Thu, Apr 30
Delta Logo
1:55 pm - 2:55 pm
MKE
-
LIS
19h 00m
2 stops
Delta Logo
5:00 am - 4:24 pm
LIS
-
MKE
17h 24m
2 stops
$763Delta
Wed, Apr 22 - Wed, Apr 29
Delta Logo
7:10 am - 8:00 am
MKE
-
LIS
18h 50m
1 stop
Delta Logo
5:00 am - 11:53 pm
LIS
-
MKE
24h 53m
2 stops
$796Delta
Wed, May 6 - Thu, May 14
Multiple Airlines Logo
1:53 pm - 11:45 am
MKE
-
OPO
15h 52m
2 stops
Multiple Airlines Logo
8:40 pm - 8:06 pm
OPO
-
MKE
29h 26m
2 stops
$921Multiple Airlines
Wed, Apr 15 - Mon, Apr 20
United Airlines Logo
1:30 pm - 9:45 am
MKE
-
OPO
14h 15m
2 stops
United Airlines Logo
9:00 am - 7:51 pm
OPO
-
MKE
16h 51m
2 stops
$940United Airlines
Wed, Jul 22 - Tue, Aug 4

Aer Lingus flights from Milwaukee to Portugal

Our best Aer Lingus deals on Milwaukee to Portugal flight tickets
Aer Lingus
Apr 17
MKE5:41 pmMilwaukee-Mitchell
34h 34m
2 stops
LIS10:15 amLisbon Humberto Delgado
Apr 26
LIS10:15 pmLisbon Humberto Delgado
27h 51m
2 stops
MKE8:06 pmMilwaukee-Mitchell
$832
Aer Lingus
Apr 17
MKE6:40 pmMilwaukee-Mitchell
33h 35m
2 stops
LIS10:15 amLisbon Humberto Delgado
Apr 26
LIS10:15 pmLisbon Humberto Delgado
27h 51m
2 stops
MKE8:06 pmMilwaukee-Mitchell
$882

British Airways flights from Milwaukee to Portugal

Our best British Airways deals on Milwaukee to Portugal flight tickets
British Airways
May 8
MKE6:40 pmMilwaukee-Mitchell
22h 30m
2 stops
LIS11:10 pmLisbon Humberto Delgado
May 15
LIS7:20 amLisbon Humberto Delgado
18h 46m
2 stops
MKE8:06 pmMilwaukee-Mitchell
$999
British Airways
May 3
MKE6:40 pmMilwaukee-Mitchell
22h 25m
2 stops
LIS11:05 pmLisbon Humberto Delgado
May 18
LIS6:45 pmLisbon Humberto Delgado
29h 15m
2 stops
MKE6:00 pmMilwaukee-Mitchell
$1,017

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 March 28, 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

Wed 4/22

6:00 am-9:05 am

1 stop21h 05m

Lisbon Humberto Delgado

Wed 4/29

6:35 am-6:00 pm

2 stops17h 25m

$670

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 4/22

7:41 pm-10:15 pm

2 stops20h 34m

Lisbon Humberto Delgado

Wed 4/29

5:05 am-4:47 pm

2 stops17h 42m

$671

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 4/24

7:41 pm-9:55 pm

2 stops20h 14m

Lisbon Humberto Delgado

Thu 4/30

10:25 am-5:49 pm

1 stop13h 24m

$696

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Mon 4/27

5:48 pm-3:30 pm

2 stops15h 42m

Porto

Tue 5/5

6:15 am-4:24 pm

2 stops16h 09m

$712

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 4/21

1:55 pm-10:55 am

2 stops15h 00m

Porto

Tue 4/28

6:15 am-4:24 pm

2 stops16h 09m

$720

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 4/24

1:59 pm-10:45 am

1 stop14h 46m

Lisbon Humberto Delgado

Thu 4/30

10:00 am-8:25 pm

1 stop16h 25m

$727

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 4/22

1:55 pm-2:55 pm

2 stops19h 00m

Lisbon Humberto Delgado

Wed 4/29

5:00 am-4:24 pm

2 stops17h 24m

$763

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 5/6

7:10 am-8:00 am

1 stop18h 50m

Lisbon Humberto Delgado

Thu 5/14

5:00 am-11:53 pm

2 stops24h 53m

$796

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Wed 4/15

1:53 pm-11:45 am

2 stops15h 52m

Porto

Mon 4/20

8:40 pm-8:06 pm

2 stops29h 26m

$921
Quickest round-trip

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Wed 7/22

1:30 pm-9:45 am

2 stops14h 15m

Porto

Tue 8/4

9:00 am-7:51 pm

2 stops16h 51m

$940

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 52m

Direct flights

None
The fastest flight from Milwaukee to Portugal takes 14h 52m
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
9,499 reviews
Search United Airlines flights
American AirlinesPriceFrom $778Free CancellationRating
7.1
11,520 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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