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Cheap flights from Milwaukee to Portugal from $324

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 5/10. 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.
Lufthansa Logo
11:29 am - 8:10 amMKE-LIS
14h 41m1 stop
Lufthansa Logo
5:00 am - 9:59 pmLIS-MKE
22h 59m2 stops
$425Lufthansa
Find Deal
Tue, Jan 13 - Sun, Jan 18
Lufthansa Logo
11:29 am - 8:10 amMKE-LIS
14h 41m1 stop
Lufthansa Logo
5:00 am - 9:59 pmLIS-MKE
22h 59m2 stops
$426Lufthansa
Find Deal
Tue, Jan 13 - Sun, Jan 18
American Airlines Logo
4:58 pm - 2:45 pmMKE-LIS
15h 47m2 stops
American Airlines Logo
8:20 am - 11:04 pmLIS-MKE
19h 44m2 stops
$450American Airlines
Find Deal
Tue, Mar 3 - Wed, Mar 11
Virgin Atlantic Logo
7:10 am - 8:00 amMKE-LIS
18h 50m1 stop
Virgin Atlantic Logo
11:15 am - 6:40 pmLIS-MKE
12h 25m1 stop
$456Virgin Atlantic
Find Deal
Tue, Mar 3 - Wed, Mar 11
American Airlines Logo
4:58 pm - 2:45 pmMKE-LIS
15h 47m2 stops
American Airlines Logo
11:15 am - 9:56 amLIS-MKE
27h 41m1 stop
$457American Airlines
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Tue, Mar 3 - Wed, Mar 11
British Airways Logo
1:04 pm - 5:40 pmMKE-LIS
22h 36m2 stops
British Airways Logo
12:55 pm - 10:05 pmLIS-MKE
39h 10m2 stops
$458British Airways
Find Deal
Wed, Jan 14 - Mon, Jan 19
Delta Logo
7:00 am - 8:00 amMKE-LIS
19h 00m2 stops
Delta Logo
5:00 am - 3:19 pmLIS-MKE
16h 19m2 stops
$476Delta
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Tue, Jan 13 - Sun, Jan 18
Delta Logo
7:03 am - 9:00 amMKE-LIS
19h 57m1 stop
Delta Logo
5:30 am - 6:11 pmLIS-MKE
18h 41m2 stops
$477Delta
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Tue, Feb 24 - Sat, Mar 7
KLM Logo
1:18 pm - 1:20 pmMKE-OPO
18h 02m2 stops
KLM Logo
11:15 am - 10:42 pmOPO-MKE
17h 27m2 stops
$494KLM
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Thu, Jan 15 - Fri, Jan 23
United Airlines Logo
10:45 am - 8:40 amMKE-PDL
16h 55m2 stops
United Airlines Logo
11:00 am - 6:08 pmPDL-MKE
12h 08m1 stop
$819United Airlines
Find Deal
Thu, May 7 - Fri, May 15

American Airlines flights from Milwaukee to Portugal

Our best American Airlines deals on Milwaukee to Portugal flight tickets
American Airlines
Mar 3
MKE4:58 pmMilwaukee-Mitchell
15h 47m
2 stops
LIS2:45 pmLisbon Humberto Delgado
Mar 11
LIS8:20 amLisbon Humberto Delgado
19h 44m
2 stops
MKE11:04 pmMilwaukee-Mitchell
$450
Find similar
American Airlines
Mar 3
MKE4:58 pmMilwaukee-Mitchell
15h 47m
2 stops
LIS2:45 pmLisbon Humberto Delgado
Mar 11
LIS11:15 amLisbon Humberto Delgado
27h 41m
1 stop
MKE9:56 amMilwaukee-Mitchell
$457
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Virgin Atlantic flights from Milwaukee to Portugal

Our best Virgin Atlantic deals on Milwaukee to Portugal flight tickets
Virgin Atlantic
Mar 3
MKE7:10 amMilwaukee-Mitchell
18h 50m
1 stop
LIS8:00 amLisbon Humberto Delgado
Mar 11
LIS11:15 amLisbon Humberto Delgado
12h 25m
1 stop
MKE6:40 pmMilwaukee-Mitchell
$456
Find similar
Virgin Atlantic
Dec 5
MKE7:00 amMilwaukee-Mitchell
19h 00m
1 stop
LIS8:00 amLisbon Humberto Delgado
Dec 18
LIS10:40 amLisbon Humberto Delgado
16h 46m
1 stop
MKE9:26 pmMilwaukee-Mitchell
$9,645
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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 December 2, 2025.
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

Tue 1/13

11:29 am-8:10 am

1 stop14h 41m

Lisbon Humberto Delgado

Sun 1/18

5:00 am-9:59 pm

2 stops22h 59m

$425

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 1/13

11:29 am-8:10 am

1 stop14h 41m

Lisbon Humberto Delgado

Sun 1/18

5:00 am-9:59 pm

2 stops22h 59m

$426

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 3/3

4:58 pm-2:45 pm

2 stops15h 47m

Lisbon Humberto Delgado

Wed 3/11

8:20 am-11:04 pm

2 stops19h 44m

$450

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 3/3

7:10 am-8:00 am

1 stop18h 50m

Lisbon Humberto Delgado

Wed 3/11

11:15 am-6:40 pm

1 stop12h 25m

$456

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 3/3

4:58 pm-2:45 pm

2 stops15h 47m

Lisbon Humberto Delgado

Wed 3/11

11:15 am-9:56 am

1 stop27h 41m

$457

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 1/14

1:04 pm-5:40 pm

2 stops22h 36m

Lisbon Humberto Delgado

Mon 1/19

12:55 pm-10:05 pm

2 stops39h 10m

$458

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 1/13

7:00 am-8:00 am

2 stops19h 00m

Lisbon Humberto Delgado

Sun 1/18

5:00 am-3:19 pm

2 stops16h 19m

$476

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 2/24

7:03 am-9:00 am

1 stop19h 57m

Lisbon Humberto Delgado

Sat 3/7

5:30 am-6:11 pm

2 stops18h 41m

$477

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Thu 1/15

1:18 pm-1:20 pm

2 stops18h 02m

Porto

Fri 1/23

11:15 am-10:42 pm

2 stops17h 27m

$494

MilwaukeePonta Delgada

MKE - PDL

MKEPDL

Milwaukee-Mitchell

Thu 5/7

10:45 am-8:40 am

2 stops16h 55m

Ponta Delgada Nordela

Fri 5/15

11:00 am-6:08 pm

1 stop12h 08m

$819

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

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Milwaukee is in February. Flight prices, which tend to average around $702, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Portugal from Milwaukee during November instead. Flights to Portugal in November, while not as cheap as those in February, still average around $742.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Sunday is the cheapest day to fly to Portugal from Milwaukee. The lowest ticket price found for a Sunday departure recently was $911. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Saturday, with ticket prices averaging around $1,186.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is at noon. Flights from Milwaukee to Portugal during this time can be as low as $905. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,072 per ticket.

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from Milwaukee when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $1,119 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Milwaukee for as low as $696 on momondo.

Can stopping save me money on Milwaukee to Portugal flights?

You could potentially save up to 38% 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

10h 39m

Direct flights

None
The fastest flight from Milwaukee to Portugal takes 10h 39m
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
9,063 reviews
Search United Airlines flights
KLMPriceFrom $670Free CancellationRating
7.7
1,426 reviews
Search KLM flights
DeltaPriceFrom $695Free CancellationRating
7.9
8,011 reviews
Search Delta flights
American AirlinesPriceFrom $703Free CancellationRating
7.2
11,043 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

Popular cities in Portugal

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