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Cheap flights from Milwaukee to Portugal from $396

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 5/13. 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 am
MKE
-
LIS
14h 41m1 stop
Lufthansa Logo
5:00 am - 9:59 pm
LIS
-
MKE
22h 59m2 stops
$424Lufthansa
Sun, Jan 18 - Sun, Jan 25
Delta Logo
7:05 am - 8:00 am
MKE
-
LIS
18h 55m1 stop
Delta Logo
10:00 am - 8:58 pm
LIS
-
MKE
16h 58m1 stop
$456Delta
Wed, Jan 21 - Tue, Feb 3
Delta Logo
7:05 am - 8:00 am
MKE
-
LIS
18h 55m1 stop
Delta Logo
5:00 am - 5:34 pm
LIS
-
MKE
18h 34m2 stops
$471Delta
Sun, Jan 25 - Sun, Feb 1
Multiple Airlines Logo
5:11 pm - 5:30 pm
MKE
-
LIS
18h 19m2 stops
Multiple Airlines Logo
10:00 am - 8:36 pm
LIS
-
MKE
16h 36m1 stop
$475Multiple Airlines
Tue, Feb 10 - Thu, Feb 19
Delta Logo
10:13 am - 8:00 am
MKE
-
LIS
15h 47m2 stops
Delta Logo
11:25 am - 11:46 pm
LIS
-
MKE
18h 21m2 stops
$476Delta
Sun, Jan 25 - Mon, Feb 2
Delta Logo
7:05 am - 8:00 am
MKE
-
LIS
18h 55m1 stop
Delta Logo
10:00 am - 8:58 pm
LIS
-
MKE
16h 58m1 stop
$481Delta
Thu, Jan 22 - Wed, Feb 4
Multiple Airlines Logo
3:20 pm - 9:20 am
MKE
-
LIS
36h 00m2 stops
Multiple Airlines Logo
5:00 am - 9:59 pm
LIS
-
MKE
22h 59m2 stops
$490Multiple Airlines
Sun, Jan 18 - Sun, Jan 25
KLM Logo
9:28 am - 10:30 am
MKE
-
OPO
19h 02m2 stops
KLM Logo
5:00 am - 7:58 pm
OPO
-
MKE
20h 58m2 stops
$492KLM
Sat, Jan 17 - Sat, Jan 24
United Airlines Logo
11:30 am - 11:40 am
MKE
-
OPO
18h 10m2 stops
United Airlines Logo
6:00 am - 9:59 pm
OPO
-
MKE
21h 59m2 stops
$503United Airlines
Fri, Jan 30 - Tue, Feb 3
American Airlines Logo
6:53 pm - 8:00 pm
MKE
-
OPO
19h 07m2 stops
American Airlines Logo
8:20 am - 11:27 pm
OPO
-
MKE
21h 07m2 stops
$1,354American Airlines
Fri, May 15 - Tue, May 26

Delta flights from Milwaukee to Portugal

Our best Delta deals on Milwaukee to Portugal flight tickets
Delta
Jan 21
MKE7:05 amMilwaukee-Mitchell
18h 55m
1 stop
LIS8:00 amLisbon Humberto Delgado
Jan 29
LIS10:00 amLisbon Humberto Delgado
16h 58m
1 stop
MKE8:58 pmMilwaukee-Mitchell
$456
Find similar
Delta
Jan 25
MKE7:05 amMilwaukee-Mitchell
18h 55m
1 stop
LIS8:00 amLisbon Humberto Delgado
Feb 1
LIS5:00 amLisbon Humberto Delgado
18h 34m
2 stops
MKE5:34 pmMilwaukee-Mitchell
$471
Find similar
Delta
Jan 25
MKE10:13 amMilwaukee-Mitchell
15h 47m
2 stops
LIS8:00 amLisbon Humberto Delgado
Feb 2
LIS11:25 amLisbon Humberto Delgado
18h 21m
2 stops
MKE11:46 pmMilwaukee-Mitchell
$476
Find similar

Air Canada flights from Milwaukee to Portugal

Our best Air Canada deals on Milwaukee to Portugal flight tickets
Air Canada
Jan 21
MKE3:20 pmMilwaukee-Mitchell
36h 00m
2 stops
LIS9:20 amLisbon Humberto Delgado
Feb 3
LIS11:20 amLisbon Humberto Delgado
40h 39m
2 stops
MKE9:59 pmMilwaukee-Mitchell
$489
Find similar
Air Canada
Jan 21
MKE3:20 pmMilwaukee-Mitchell
36h 00m
2 stops
LIS9:20 amLisbon Humberto Delgado
Jan 30
LIS11:20 amLisbon Humberto Delgado
30h 49m
2 stops
MKE12:09 pmMilwaukee-Mitchell
$493
Find similar
Air Canada
Jan 22
MKE10:30 amMilwaukee-Mitchell
40h 50m
2 stops
LIS9:20 amLisbon Humberto Delgado
Jan 30
LIS11:20 amLisbon Humberto Delgado
30h 49m
2 stops
MKE12:09 pmMilwaukee-Mitchell
$496
Find similar

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 5, 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

Sun 1/18

11:29 am-8:10 am

1 stop14h 41m

Lisbon Humberto Delgado

Sun 1/25

5:00 am-9:59 pm

2 stops22h 59m

$424

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 1/21

7:05 am-8:00 am

1 stop18h 55m

Lisbon Humberto Delgado

Tue 2/3

10:00 am-8:58 pm

1 stop16h 58m

$456

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 1/25

7:05 am-8:00 am

1 stop18h 55m

Lisbon Humberto Delgado

Sun 2/1

5:00 am-5:34 pm

2 stops18h 34m

$471

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 2/10

5:11 pm-5:30 pm

2 stops18h 19m

Lisbon Humberto Delgado

Thu 2/19

10:00 am-8:36 pm

1 stop16h 36m

$475

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 1/25

10:13 am-8:00 am

2 stops15h 47m

Lisbon Humberto Delgado

Mon 2/2

11:25 am-11:46 pm

2 stops18h 21m

$476

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Thu 1/22

7:05 am-8:00 am

1 stop18h 55m

Lisbon Humberto Delgado

Wed 2/4

10:00 am-8:58 pm

1 stop16h 58m

$481

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 1/18

3:20 pm-9:20 am

2 stops36h 00m

Lisbon Humberto Delgado

Sun 1/25

5:00 am-9:59 pm

2 stops22h 59m

$490

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sat 1/17

9:28 am-10:30 am

2 stops19h 02m

Porto

Sat 1/24

5:00 am-7:58 pm

2 stops20h 58m

$492

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Fri 1/30

11:30 am-11:40 am

2 stops18h 10m

Porto

Tue 2/3

6:00 am-9:59 pm

2 stops21h 59m

$503

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Fri 5/15

6:53 pm-8:00 pm

2 stops19h 07m

Porto

Tue 5/26

8:20 am-11:27 pm

2 stops21h 07m

$1,354

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

14h 31m

Direct flights

None
The fastest flight from Milwaukee to Portugal takes 14h 31m
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
9,065 reviews
Search United Airlines flights
KLMPriceFrom $670Free CancellationRating
7.7
1,430 reviews
Search KLM flights
DeltaPriceFrom $695Free CancellationRating
7.9
8,010 reviews
Search Delta flights
American AirlinesPriceFrom $703Free CancellationRating
7.2
11,047 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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