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Cheap flights from Milwaukee to Portugal from $338

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 10/20. 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.
Lufthansa Logo
6:32 pm - 10:45 pm
MKE
-
LIS
22h 13m
2 stops
Lufthansa Logo
5:00 am - 8:55 pm
LIS
-
MKE
21h 55m
2 stops
$729Lufthansa
Tue, Oct 20 - Wed, Nov 4
United Airlines Logo
11:35 am - 8:20 am
MKE
-
LIS
14h 45m
1 stop
United Airlines Logo
11:20 am - 11:28 am
LIS
-
MKE
30h 08m
2 stops
$731United Airlines
Tue, Oct 20 - Wed, Nov 4
United Airlines Logo
6:10 am - 8:10 am
MKE
-
LIS
21h 00m
1 stop
United Airlines Logo
12:25 pm - 10:45 pm
LIS
-
MKE
16h 20m
2 stops
$734United Airlines
Sun, Oct 25 - Wed, Nov 11
American Airlines Logo
7:19 pm - 2:50 pm
MKE
-
LIS
14h 31m
2 stops
American Airlines Logo
6:30 am - 6:36 pm
LIS
-
MKE
18h 06m
2 stops
$735American Airlines
Wed, Oct 28 - Wed, Nov 11
American Airlines Logo
12:38 pm - 9:05 am
MKE
-
LIS
14h 27m
1 stop
American Airlines Logo
6:30 am - 6:36 pm
LIS
-
MKE
18h 06m
2 stops
$739American Airlines
Tue, Oct 20 - Wed, Nov 4
Delta Logo
1:30 pm - 8:00 am
MKE
-
LIS
12h 30m
1 stop
Delta Logo
5:30 am - 8:56 pm
LIS
-
MKE
21h 26m
2 stops
$741Delta
Sun, Nov 8 - Thu, Nov 12
Delta Logo
7:00 am - 8:00 am
MKE
-
LIS
19h 00m
1 stop
Delta Logo
10:00 am - 8:08 pm
LIS
-
MKE
16h 08m
1 stop
$745Delta
Sun, Nov 8 - Fri, Nov 13
KLM Logo
8:11 am - 10:25 am
MKE
-
OPO
20h 14m
1 stop
KLM Logo
5:00 am - 2:24 pm
OPO
-
MKE
15h 24m
2 stops
$876KLM
Sun, Sep 20 - Tue, Oct 6
KLM Logo
8:11 am - 10:25 am
MKE
-
OPO
20h 14m
1 stop
KLM Logo
1:05 pm - 8:35 pm
OPO
-
MKE
13h 30m
1 stop
$884KLM
Sun, Sep 20 - Tue, Oct 6
WestJet Logo
12:07 pm - 8:10 am
MKE
-
PDL
15h 03m
2 stops
WestJet Logo
11:30 am - 6:00 pm
PDL
-
MKE
35h 30m
2 stops
$1,937WestJet
Wed, Jul 15 - Sat, Jul 25

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United Airlines flights from Milwaukee to Portugal

Our best United Airlines deals on Milwaukee to Portugal flight tickets
United Airlines
Oct 20
MKE11:35 amMilwaukee-Mitchell
14h 45m
1 stop
LIS8:20 amLisbon Humberto Delgado
Nov 4
LIS11:20 amLisbon Humberto Delgado
30h 08m
2 stops
MKE11:28 amMilwaukee-Mitchell
$731
United Airlines
Oct 25
MKE6:10 amMilwaukee-Mitchell
21h 00m
1 stop
LIS8:10 amLisbon Humberto Delgado
Nov 11
LIS12:25 pmLisbon Humberto Delgado
16h 20m
2 stops
MKE10:45 pmMilwaukee-Mitchell
$734
United Airlines
Oct 28
MKE9:30 amMilwaukee-Mitchell
16h 25m
2 stops
LIS6:55 amLisbon Humberto Delgado
Nov 12
LIS5:00 amLisbon Humberto Delgado
19h 48m
2 stops
MKE6:48 pmMilwaukee-Mitchell
$737

American Airlines flights from Milwaukee to Portugal

Our best American Airlines deals on Milwaukee to Portugal flight tickets
American Airlines
Oct 28
MKE7:19 pmMilwaukee-Mitchell
14h 31m
2 stops
LIS2:50 pmLisbon Humberto Delgado
Nov 11
LIS6:30 amLisbon Humberto Delgado
18h 06m
2 stops
MKE6:36 pmMilwaukee-Mitchell
$735
American Airlines
Oct 20
MKE12:38 pmMilwaukee-Mitchell
14h 27m
1 stop
LIS9:05 amLisbon Humberto Delgado
Nov 4
LIS6:30 amLisbon Humberto Delgado
18h 06m
2 stops
MKE6:36 pmMilwaukee-Mitchell
$739

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 July 6, 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

Tue 10/20

6:32 pm-10:45 pm

2 stops22h 13m

Lisbon Humberto Delgado

Wed 11/4

5:00 am-8:55 pm

2 stops21h 55m

$729

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 10/20

11:35 am-8:20 am

1 stop14h 45m

Lisbon Humberto Delgado

Wed 11/4

11:20 am-11:28 am

2 stops30h 08m

$731

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 10/25

6:10 am-8:10 am

1 stop21h 00m

Lisbon Humberto Delgado

Wed 11/11

12:25 pm-10:45 pm

2 stops16h 20m

$734

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 10/28

7:19 pm-2:50 pm

2 stops14h 31m

Lisbon Humberto Delgado

Wed 11/11

6:30 am-6:36 pm

2 stops18h 06m

$735
Quickest round-trip

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 10/20

12:38 pm-9:05 am

1 stop14h 27m

Lisbon Humberto Delgado

Wed 11/4

6:30 am-6:36 pm

2 stops18h 06m

$739

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 11/8

1:30 pm-8:00 am

1 stop12h 30m

Lisbon Humberto Delgado

Thu 11/12

5:30 am-8:56 pm

2 stops21h 26m

$741

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 11/8

7:00 am-8:00 am

1 stop19h 00m

Lisbon Humberto Delgado

Fri 11/13

10:00 am-8:08 pm

1 stop16h 08m

$745

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sun 9/20

8:11 am-10:25 am

1 stop20h 14m

Porto

Tue 10/6

5:00 am-2:24 pm

2 stops15h 24m

$876

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sun 9/20

8:11 am-10:25 am

1 stop20h 14m

Porto

Tue 10/6

1:05 pm-8:35 pm

1 stop13h 30m

$884

MilwaukeePonta Delgada

MKE - PDL

MKEPDL

Milwaukee-Mitchell

Wed 7/15

12:07 pm-8:10 am

2 stops15h 03m

Ponta Delgada Nordela

Sat 7/25

11:30 am-6:00 pm

2 stops35h 30m

$1,937

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 December. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of December, then book flights to Portugal from Milwaukee during February instead. Flights to Portugal in February, while not as cheap as those in December, still average around $509.

Can stopping save me money on Milwaukee to Portugal flights?

You could potentially save up to 26% 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

13h 15m

Direct flights

None
The fastest flight from Milwaukee to Portugal takes 13h 15m
There are no direct flights from Milwaukee to Portugal. There are no popular flight routes from Milwaukee to Portugal.
Search flight deals

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
8,453 reviews
Search Delta flights
United AirlinesPriceFrom $509Free CancellationRating
7.4
9,938 reviews
Search United Airlines flights
American AirlinesPriceFrom $833Free CancellationRating
7.1
11,784 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 $533
Flights to Portofrom $534
Flights to Funchalfrom $566
Flights to Farofrom $578
Flights to Ponta Delgadafrom $569
Flights to Lajesfrom $585
Flights to Hortafrom $752
Flights to Pico Islandfrom $730
Flights to Porto Santofrom $670
Flights to Velasfrom $580