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Cheap flights from Milwaukee to Portugal from $455

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 7/19. 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.
Multiple Airlines Logo
4:26 pm - 5:55 pm
MKE
-
LIS
19h 29m
2 stops
Multiple Airlines Logo
6:35 am - 8:06 pm
LIS
-
MKE
19h 31m
2 stops
$668Multiple Airlines
Wed, Apr 22 - Wed, Apr 29
Lufthansa Logo
7:41 pm - 10:15 pm
MKE
-
LIS
20h 34m
2 stops
Lufthansa Logo
7:25 am - 10:33 pm
LIS
-
MKE
21h 08m
2 stops
$670Lufthansa
Wed, Apr 22 - Thu, Apr 30
British Airways Logo
6:40 pm - 11:05 pm
MKE
-
LIS
22h 25m
2 stops
British Airways Logo
11:00 am - 10:00 pm
LIS
-
MKE
17h 00m
2 stops
$693British Airways
Sun, Apr 19 - Mon, Apr 27
Delta Logo
6:00 am - 8:00 am
MKE
-
LIS
20h 00m
1 stop
Delta Logo
5:35 am - 7:16 pm
LIS
-
MKE
19h 41m
2 stops
$723Delta
Sun, Apr 19 - Wed, Apr 29
United Airlines Logo
12:07 pm - 6:55 am
MKE
-
OPO
12h 48m
1 stop
United Airlines Logo
12:35 pm - 12:11 am
OPO
-
MKE
17h 36m
2 stops
$753United Airlines
Tue, Aug 11 - Wed, Aug 19
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
$764KLM
Mon, Apr 27 - Tue, May 5
Delta Logo
7:00 am - 10:30 am
MKE
-
OPO
21h 30m
1 stop
Delta Logo
5:00 am - 4:42 pm
OPO
-
MKE
17h 42m
2 stops
$777Delta
Mon, Aug 10 - Fri, Aug 21
KLM Logo
7:00 am - 10:30 am
MKE
-
OPO
21h 30m
1 stop
KLM Logo
12:45 pm - 8:09 pm
OPO
-
MKE
13h 24m
1 stop
$784KLM
Tue, Aug 11 - Fri, Aug 21
British Airways Logo
6:40 pm - 7:30 pm
MKE
-
OPO
42h 50m
2 stops
British Airways Logo
8:20 am - 6:00 pm
OPO
-
MKE
15h 40m
2 stops
$786British Airways
Mon, Apr 27 - Tue, May 5
United Airlines Logo
1:30 pm - 9:45 am
MKE
-
OPO
14h 15m
2 stops
United Airlines Logo
12:35 pm - 12:11 am
OPO
-
MKE
17h 36m
2 stops
$813United Airlines
Sat, Aug 8 - Wed, Aug 19

American Airlines flights from Milwaukee to Portugal

Our best American Airlines deals on Milwaukee to Portugal flight tickets
American Airlines
May 3
MKE6:00 amMilwaukee-Mitchell
21h 05m
1 stop
LIS9:05 amLisbon Humberto Delgado
May 10
LIS6:35 amLisbon Humberto Delgado
16h 32m
2 stops
MKE5:07 pmMilwaukee-Mitchell
$852
American Airlines
Apr 16
MKE6:00 amMilwaukee-Mitchell
21h 05m
1 stop
LIS9:05 amLisbon Humberto Delgado
Apr 27
LIS8:25 amLisbon Humberto Delgado
14h 46m
2 stops
MKE5:11 pmMilwaukee-Mitchell
$853
American Airlines
Apr 22
MKE1:10 pmMilwaukee-Mitchell
13h 55m
1 stop
LIS9:05 amLisbon Humberto Delgado
Apr 29
LIS11:05 amLisbon Humberto Delgado
16h 36m
1 stop
MKE9:41 pmMilwaukee-Mitchell
$892

Lufthansa flights from Milwaukee to Portugal

Our best Lufthansa deals on Milwaukee to Portugal flight tickets
Lufthansa
Apr 22
MKE7:41 pmMilwaukee-Mitchell
20h 34m
2 stops
LIS10:15 pmLisbon Humberto Delgado
Apr 30
LIS7:25 amLisbon Humberto Delgado
21h 08m
2 stops
MKE10:33 pmMilwaukee-Mitchell
$670
Lufthansa
Apr 20
MKE12:13 pmMilwaukee-Mitchell
28h 32m
2 stops
LIS10:45 pmLisbon Humberto Delgado
Apr 30
LIS7:25 amLisbon Humberto Delgado
21h 08m
2 stops
MKE10:33 pmMilwaukee-Mitchell
$671
Lufthansa
Apr 19
MKE12:13 pmMilwaukee-Mitchell
28h 02m
2 stops
LIS10:15 pmLisbon Humberto Delgado
Apr 26
LIS5:05 amLisbon Humberto Delgado
21h 43m
2 stops
MKE8:48 pmMilwaukee-Mitchell
$683

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 21, 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

4:26 pm-5:55 pm

2 stops19h 29m

Lisbon Humberto Delgado

Wed 4/29

6:35 am-8:06 pm

2 stops19h 31m

$668

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 4/22

7:41 pm-10:15 pm

2 stops20h 34m

Lisbon Humberto Delgado

Thu 4/30

7:25 am-10:33 pm

2 stops21h 08m

$670

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 4/19

6:40 pm-11:05 pm

2 stops22h 25m

Lisbon Humberto Delgado

Mon 4/27

11:00 am-10:00 pm

2 stops17h 00m

$693

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 4/19

6:00 am-8:00 am

1 stop20h 00m

Lisbon Humberto Delgado

Wed 4/29

5:35 am-7:16 pm

2 stops19h 41m

$723
Quickest round-trip

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 8/11

12:07 pm-6:55 am

1 stop12h 48m

Porto

Wed 8/19

12:35 pm-12:11 am

2 stops17h 36m

$753

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

$764

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Mon 8/10

7:00 am-10:30 am

1 stop21h 30m

Porto

Fri 8/21

5:00 am-4:42 pm

2 stops17h 42m

$777

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 8/11

7:00 am-10:30 am

1 stop21h 30m

Porto

Fri 8/21

12:45 pm-8:09 pm

1 stop13h 24m

$784

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Mon 4/27

6:40 pm-7:30 pm

2 stops42h 50m

Porto

Tue 5/5

8:20 am-6:00 pm

2 stops15h 40m

$786

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sat 8/8

1:30 pm-9:45 am

2 stops14h 15m

Porto

Wed 8/19

12:35 pm-12:11 am

2 stops17h 36m

$813

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portugal from

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

12h 40m

Direct flights

None
The fastest flight from Milwaukee to Portugal takes 12h 40m
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
9,452 reviews
Search United Airlines flights
American AirlinesPriceFrom $778Free CancellationRating
7.1
11,488 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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