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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 10/30. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Milwaukee to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:10 am - 8:10 amMKE  Milwaukee-Mitchell-LIS Lisbon Humberto Delgado
20h 00m1 stop Newark
United Airlines Logo
11:20 am - 6:08 pmLIS  Lisbon Humberto Delgado-MKE Milwaukee-Mitchell
36h 48m2 stops Montreal Pierre Elliott Trudeau Intl Newark
$726United Airlines
Tue, Dec 1 - Fri, Dec 11
United Airlines Logo
7:00 pm - 6:55 amMKE  Milwaukee-Mitchell-LIS Lisbon Humberto Delgado
29h 55m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl
United Airlines Logo
11:20 am - 6:08 pmLIS  Lisbon Humberto Delgado-MKE Milwaukee-Mitchell
36h 48m2 stops Montreal Pierre Elliott Trudeau Intl Newark
$730United Airlines
Tue, Dec 1 - Fri, Dec 11
Iberia Logo
2:58 pm - 11:25 pmMKE  Milwaukee-Mitchell-LIS Lisbon Humberto Delgado
27h 27m2 stops Chicago O'Hare Intl Madrid Barajas
Iberia Logo
6:30 am - 6:34 pmLIS  Lisbon Humberto Delgado-MKE Milwaukee-Mitchell
18h 04m2 stops Madrid Barajas Chicago O'Hare Intl
$732Iberia
Wed, Oct 28 - Thu, Nov 5
United Airlines Logo
11:06 am - 8:10 amMKE  Milwaukee-Mitchell-LIS Lisbon Humberto Delgado
16h 04m1 stop Newark
United Airlines Logo
5:00 am - 6:58 pmLIS  Lisbon Humberto Delgado-MKE Milwaukee-Mitchell
19h 58m2 stops Frankfurt am Main Chicago O'Hare Intl
$734United Airlines
Wed, Oct 28 - Thu, Nov 5
Delta Logo
7:00 am - 9:00 amMKE  Milwaukee-Mitchell-LIS Lisbon Humberto Delgado
20h 00m1 stop Boston Logan Intl
Delta Logo
11:15 am - 9:33 pmLIS  Lisbon Humberto Delgado-MKE Milwaukee-Mitchell
16h 18m1 stop Boston Logan Intl
$745Delta
Tue, Dec 1 - Fri, Dec 11
KLM Logo
8:00 am - 8:00 amMKE  Milwaukee-Mitchell-LIS Lisbon Humberto Delgado
19h 00m1 stop New York John F Kennedy Intl
KLM Logo
10:00 am - 8:35 pmLIS  Lisbon Humberto Delgado-MKE Milwaukee-Mitchell
16h 35m1 stop New York John F Kennedy Intl
$746KLM
Wed, Oct 28 - Thu, Nov 5
Delta Logo
6:35 pm - 10:45 amMKE  Milwaukee-Mitchell-LIS Lisbon Humberto Delgado
10h 10m1 stop Boston Logan Intl
Delta Logo
5:00 am - 8:06 pmLIS  Lisbon Humberto Delgado-MKE Milwaukee-Mitchell
21h 06m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
$765Delta
Wed, Oct 14 - Fri, Oct 23
Lufthansa Logo
12:05 pm - 10:45 pmMKE  Milwaukee-Mitchell-LIS Lisbon Humberto Delgado
28h 40m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
Lufthansa Logo
6:05 am - 10:15 pmLIS  Lisbon Humberto Delgado-MKE Milwaukee-Mitchell
21h 10m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl
$778Lufthansa
Tue, Oct 13 - Tue, Oct 27
American Airlines Logo
6:02 pm - 3:40 pmMKE  Milwaukee-Mitchell-LIS Lisbon Humberto Delgado
15h 38m2 stops Philadelphia London Heathrow
American Airlines Logo
6:35 am - 6:31 pmLIS  Lisbon Humberto Delgado-MKE Milwaukee-Mitchell
17h 56m2 stops Madrid Barajas Chicago O'Hare Intl
$825American Airlines
Wed, Oct 14 - Sat, Oct 24
American Airlines Logo
6:10 am - 9:05 amMKE  Milwaukee-Mitchell-LIS Lisbon Humberto Delgado
20h 55m1 stop Philadelphia
American Airlines Logo
7:20 am - 7:58 pmLIS  Lisbon Humberto Delgado-MKE Milwaukee-Mitchell
18h 38m2 stops London Heathrow Chicago O'Hare Intl
$945American Airlines
Sat, Oct 10 - Sun, Oct 18

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Lufthansa flights from Milwaukee to Portugal

Our best Lufthansa deals on Milwaukee to Portugal flight tickets
Lufthansa
Oct 13
MKE12:05 pmMilwaukee-Mitchell
28h 40m
2 stops
LIS10:45 pmLisbon Humberto Delgado
Oct 27
LIS6:05 amLisbon Humberto Delgado
21h 10m
2 stops
MKE10:15 pmMilwaukee-Mitchell
$778
Lufthansa
Oct 17
MKE6:47 pmMilwaukee-Mitchell
36h 53m
2 stops
LIS1:40 pmLisbon Humberto Delgado
Oct 27
LIS6:05 amLisbon Humberto Delgado
21h 10m
2 stops
MKE10:15 pmMilwaukee-Mitchell
$783
Lufthansa
Oct 13
MKE12:05 pmMilwaukee-Mitchell
28h 40m
2 stops
LIS10:45 pmLisbon Humberto Delgado
Oct 26
LIS2:20 pmLisbon Humberto Delgado
36h 55m
2 stops
MKE10:15 pmMilwaukee-Mitchell
$788

Air Canada flights from Milwaukee to Portugal

Our best Air Canada deals on Milwaukee to Portugal flight tickets
Air Canada
Oct 15
MKE6:15 amMilwaukee-Mitchell
21h 05m
2 stops
LIS9:20 amLisbon Humberto Delgado
Oct 22
LIS11:25 amLisbon Humberto Delgado
54h 05m
2 stops
MKE11:30 amMilwaukee-Mitchell
$838
Air Canada
Oct 15
MKE6:15 amMilwaukee-Mitchell
21h 05m
2 stops
LIS9:20 amLisbon Humberto Delgado
Oct 21
LIS11:25 amLisbon Humberto Delgado
30h 05m
2 stops
MKE11:30 amMilwaukee-Mitchell
$868
Air Canada
Oct 15
MKE6:15 amMilwaukee-Mitchell
21h 05m
2 stops
LIS9:20 amLisbon Humberto Delgado
Oct 26
LIS11:20 amLisbon Humberto Delgado
31h 28m
2 stops
MKE1:48 pmMilwaukee-Mitchell
$874

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 August 5, 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 Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Tue 12/1

6:10 am-8:10 am

1 stop20h 00m

Lisbon Humberto Delgado

Fri 12/11

11:20 am-6:08 pm

2 stops36h 48m

$726

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Tue 12/1

7:00 pm-6:55 am

2 stops29h 55m

Lisbon Humberto Delgado

Fri 12/11

11:20 am-6:08 pm

2 stops36h 48m

$730

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Wed 10/28

2:58 pm-11:25 pm

2 stops27h 27m

Lisbon Humberto Delgado

Thu 11/5

6:30 am-6:34 pm

2 stops18h 04m

$732

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Wed 10/28

11:06 am-8:10 am

1 stop16h 04m

Lisbon Humberto Delgado

Thu 11/5

5:00 am-6:58 pm

2 stops19h 58m

$734

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Tue 12/1

7:00 am-9:00 am

1 stop20h 00m

Lisbon Humberto Delgado

Fri 12/11

11:15 am-9:33 pm

1 stop16h 18m

$745

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Wed 10/28

8:00 am-8:00 am

1 stop19h 00m

Lisbon Humberto Delgado

Thu 11/5

10:00 am-8:35 pm

1 stop16h 35m

$746
Quickest round-trip

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Wed 10/14

6:35 pm-10:45 am

1 stop10h 10m

Lisbon Humberto Delgado

Fri 10/23

5:00 am-8:06 pm

2 stops21h 06m

$765

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Tue 10/13

12:05 pm-10:45 pm

2 stops28h 40m

Lisbon Humberto Delgado

Tue 10/27

6:05 am-10:15 pm

2 stops21h 10m

$778

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Wed 10/14

6:02 pm-3:40 pm

2 stops15h 38m

Lisbon Humberto Delgado

Sat 10/24

6:35 am-6:31 pm

2 stops17h 56m

$825

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Sat 10/10

6:10 am-9:05 am

1 stop20h 55m

Lisbon Humberto Delgado

Sun 10/18

7:20 am-7:58 pm

2 stops18h 38m

$945

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 March. Flight prices, which tend to average around $595, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Portugal from Milwaukee during February instead. Flights to Portugal in February, while not as cheap as those in March, still average around $714.

Can stopping save me money on Milwaukee to Portugal flights?

You could potentially save up to 15% 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 10m

Direct flights

None
The fastest flight from Milwaukee to Portugal takes 10h 10m
There are no direct flights from Milwaukee to Portugal. There are no popular flight routes from Milwaukee to Portugal.
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Frequently asked questions about flying from Milwaukee to Portugal

  • 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
DeltaPriceFrom $509Free CancellationRating
7.8
8,490 reviews
Search Delta flights
United AirlinesPriceFrom $509Free CancellationRating
7.4
10,058 reviews
Search United Airlines flights
American AirlinesPriceFrom $778Free CancellationRating
7.1
11,848 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
Flights to Lisbonfrom $552
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Flights to Pico Islandfrom $725
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Flights to Velasfrom $695