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Cheap flights from Milwaukee to Portugal from $388

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 2/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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 - 3:43 pmLIS-MKE
40h 43m2 stops
$445Lufthansa
Find Deal
Sun, Jan 11 - Sun, Jan 18
United Airlines Logo
5:00 am - 8:10 amMKE-LIS
21h 10m2 stops
United Airlines Logo
11:20 am - 3:43 pmLIS-MKE
34h 23m2 stops
$487United Airlines
Find Deal
Thu, Jan 8 - Thu, Jan 15
Lufthansa Logo
11:29 am - 8:10 amMKE-LIS
14h 41m1 stop
Lufthansa Logo
5:00 am - 3:43 pmLIS-MKE
16h 43m2 stops
$493Lufthansa
Find Deal
Fri, Jan 30 - Tue, Feb 3
Delta Logo
7:05 am - 8:00 amMKE-LIS
18h 55m1 stop
Delta Logo
5:00 am - 7:58 pmLIS-MKE
20h 58m2 stops
$496Delta
Find Deal
Fri, Jan 30 - Fri, Feb 6
United Airlines Logo
11:30 am - 8:10 amMKE-LIS
14h 40m2 stops
United Airlines Logo
5:00 am - 3:43 pmLIS-MKE
16h 43m2 stops
$497United Airlines
Find Deal
Fri, Jan 30 - Tue, Feb 3
Delta Logo
12:17 pm - 11:20 amMKE-LIS
17h 03m2 stops
Delta Logo
5:00 am - 7:58 pmLIS-MKE
20h 58m2 stops
$500Delta
Find Deal
Fri, Jan 30 - Fri, Feb 6
Scandinavian Airlines Logo
7:05 am - 4:05 pmMKE-LIS
27h 00m2 stops
Scandinavian Airlines Logo
4:55 pm - 8:58 pmLIS-MKE
34h 03m2 stops
$504Scandinavian Airlines
Find Deal
Sun, Jan 11 - Sun, Jan 18
Multiple Airlines Logo
2:32 pm - 2:50 pmMKE-LIS
18h 18m2 stops
Multiple Airlines Logo
11:20 am - 9:44 pmLIS-MKE
16h 24m2 stops
$522Multiple Airlines
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Wed, Feb 11 - Wed, Feb 18
KLM Logo
1:18 pm - 10:30 amMKE-OPO
15h 12m2 stops
KLM Logo
6:35 am - 8:58 pmOPO-MKE
20h 23m2 stops
$567KLM
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Tue, Jan 6 - Thu, Jan 15
Multiple Airlines Logo
8:15 pm - 11:50 amMKE-OPO
33h 35m3 stops
Multiple Airlines Logo
6:00 pm - 10:02 pmOPO-MKE
34h 02m3 stops
$1,287Multiple Airlines
Find Deal
Tue, Jan 6 - Thu, Jan 15

Lufthansa flights from Milwaukee to Portugal

Our best Lufthansa deals on Milwaukee to Portugal flight tickets
Lufthansa
Jan 11
MKE11:29 amMilwaukee-Mitchell
14h 41m
1 stop
LIS8:10 amLisbon Humberto Delgado
Jan 18
LIS5:00 amLisbon Humberto Delgado
40h 43m
2 stops
MKE3:43 pmMilwaukee-Mitchell
$445
Find similar
Lufthansa
Jan 30
MKE11:29 amMilwaukee-Mitchell
14h 41m
1 stop
LIS8:10 amLisbon Humberto Delgado
Feb 3
LIS5:00 amLisbon Humberto Delgado
16h 43m
2 stops
MKE3:43 pmMilwaukee-Mitchell
$493
Find similar
Lufthansa
Mar 29
MKE5:30 pmMilwaukee-Mitchell
23h 15m
2 stops
LIS10:45 pmLisbon Humberto Delgado
Apr 5
LIS4:25 pmLisbon Humberto Delgado
34h 23m
2 stops
MKE8:48 pmMilwaukee-Mitchell
$726
Find similar

United Airlines flights from Milwaukee to Portugal

Our best United Airlines deals on Milwaukee to Portugal flight tickets
United Airlines
Jan 8
MKE5:00 amMilwaukee-Mitchell
21h 10m
2 stops
LIS8:10 amLisbon Humberto Delgado
Jan 15
LIS11:20 amLisbon Humberto Delgado
34h 23m
2 stops
MKE3:43 pmMilwaukee-Mitchell
$487
Find similar
United Airlines
Jan 30
MKE11:30 amMilwaukee-Mitchell
14h 40m
2 stops
LIS8:10 amLisbon Humberto Delgado
Feb 3
LIS5:00 amLisbon Humberto Delgado
16h 43m
2 stops
MKE3:43 pmMilwaukee-Mitchell
$497
Find similar
United Airlines
Jan 8
MKE5:00 amMilwaukee-Mitchell
21h 10m
2 stops
LIS8:10 amLisbon Humberto Delgado
Jan 15
LIS10:15 amLisbon Humberto Delgado
12h 43m
1 stop
MKE4:58 pmMilwaukee-Mitchell
$510
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 November 19, 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 1/11

11:29 am-8:10 am

1 stop14h 41m

Lisbon Humberto Delgado

Sun 1/18

5:00 am-3:43 pm

2 stops40h 43m

$445

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Thu 1/8

5:00 am-8:10 am

2 stops21h 10m

Lisbon Humberto Delgado

Thu 1/15

11:20 am-3:43 pm

2 stops34h 23m

$487

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 1/30

11:29 am-8:10 am

1 stop14h 41m

Lisbon Humberto Delgado

Tue 2/3

5:00 am-3:43 pm

2 stops16h 43m

$493

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 1/30

7:05 am-8:00 am

1 stop18h 55m

Lisbon Humberto Delgado

Fri 2/6

5:00 am-7:58 pm

2 stops20h 58m

$496

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 1/30

11:30 am-8:10 am

2 stops14h 40m

Lisbon Humberto Delgado

Tue 2/3

5:00 am-3:43 pm

2 stops16h 43m

$497

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 1/30

12:17 pm-11:20 am

2 stops17h 03m

Lisbon Humberto Delgado

Fri 2/6

5:00 am-7:58 pm

2 stops20h 58m

$500

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 1/11

7:05 am-4:05 pm

2 stops27h 00m

Lisbon Humberto Delgado

Sun 1/18

4:55 pm-8:58 pm

2 stops34h 03m

$504

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 2/11

2:32 pm-2:50 pm

2 stops18h 18m

Lisbon Humberto Delgado

Wed 2/18

11:20 am-9:44 pm

2 stops16h 24m

$522

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 1/6

1:18 pm-10:30 am

2 stops15h 12m

Porto

Thu 1/15

6:35 am-8:58 pm

2 stops20h 23m

$567

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 1/6

8:15 pm-11:50 am

3 stops33h 35m

Porto

Thu 1/15

6:00 pm-10:02 pm

3 stops34h 02m

$1,287

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 November. Flight prices, which tend to average around $742, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Portugal from Milwaukee during February instead. Flights to Portugal in February, while not as cheap as those in November, still average around $830.

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 $1,146 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 $734 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

Direct flights

None
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 $555Free CancellationRating
7.4
9,020 reviews
Search United Airlines flights
KLMPriceFrom $670Free CancellationRating
7.7
1,412 reviews
Search KLM flights
DeltaPriceFrom $699Free CancellationRating
7.9
8,002 reviews
Search Delta flights
American AirlinesPriceFrom $778Free CancellationRating
7.2
11,045 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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