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Cheap flights from Milwaukee to Portugal from $495

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 9/19. 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.
United Airlines Logo
6:00 am - 11:05 am
MKE
-
LIS
23h 05m
2 stops
United Airlines Logo
11:25 am - 3:04 pm
LIS
-
MKE
33h 39m
2 stops
$861United Airlines
Wed, Oct 7 - Wed, Oct 14
Delta Logo
1:00 pm - 2:55 pm
MKE
-
LIS
19h 55m
2 stops
Delta Logo
5:35 am - 6:59 pm
LIS
-
MKE
19h 24m
2 stops
$887Delta
Wed, Oct 7 - Wed, Oct 14
Delta Logo
5:48 pm - 2:55 pm
MKE
-
LIS
15h 07m
2 stops
Delta Logo
5:00 am - 3:09 pm
LIS
-
MKE
16h 09m
2 stops
$941Delta
Mon, May 11 - Sun, May 17
KLM Logo
5:48 pm - 2:35 pm
MKE
-
LIS
14h 47m
2 stops
KLM Logo
5:00 am - 4:06 pm
LIS
-
MKE
17h 06m
2 stops
$944KLM
Mon, May 11 - Sun, May 17
Delta Logo
1:00 pm - 2:55 pm
MKE
-
LIS
19h 55m
2 stops
Delta Logo
10:00 am - 8:08 pm
LIS
-
MKE
16h 08m
1 stop
$955Delta
Wed, Oct 7 - Wed, Oct 14
American Airlines Logo
6:05 am - 9:05 am
MKE
-
LIS
21h 00m
1 stop
American Airlines Logo
6:35 am - 5:40 pm
LIS
-
MKE
17h 05m
2 stops
$992American Airlines
Sat, Oct 10 - Sun, Oct 18
Multiple Airlines Logo
4:26 pm - 7:30 pm
MKE
-
OPO
21h 04m
2 stops
Multiple Airlines Logo
8:40 pm - 10:24 pm
OPO
-
MKE
31h 44m
2 stops
$1,079Multiple Airlines
Tue, May 19 - Tue, May 26
Multiple Airlines Logo
11:30 am - 10:45 am
MKE
-
LIS
17h 15m
1 stop
Multiple Airlines Logo
5:35 am - 6:17 pm
LIS
-
MKE
18h 42m
2 stops
$1,089Multiple Airlines
Mon, Jul 6 - Mon, Jul 20
KLM Logo
7:15 am - 10:30 am
MKE
-
OPO
21h 15m
1 stop
KLM Logo
5:00 am - 3:09 pm
OPO
-
MKE
16h 09m
2 stops
$1,156KLM
Tue, May 26 - Thu, Jun 4
British Airways Logo
4:26 pm - 7:30 pm
MKE
-
OPO
21h 04m
2 stops
British Airways Logo
8:20 am - 9:04 pm
OPO
-
MKE
18h 44m
2 stops
$1,187British Airways
Tue, May 19 - Tue, May 26

KLM flights from Milwaukee to Portugal

Our best KLM deals on Milwaukee to Portugal flight tickets
KLM
Apr 22
MKE11:56 amMilwaukee-Mitchell
16h 49m
1 stop
LIS10:45 amLisbon Humberto Delgado
Apr 29
LIS5:00 amLisbon Humberto Delgado
17h 24m
2 stops
MKE4:24 pmMilwaukee-Mitchell
$760
KLM
Apr 22
MKE7:10 amMilwaukee-Mitchell
18h 50m
1 stop
LIS8:00 amLisbon Humberto Delgado
Apr 29
LIS10:00 amLisbon Humberto Delgado
16h 25m
1 stop
MKE8:25 pmMilwaukee-Mitchell
$771
KLM
May 11
MKE5:48 pmMilwaukee-Mitchell
14h 47m
2 stops
LIS2:35 pmLisbon Humberto Delgado
May 17
LIS5:00 amLisbon Humberto Delgado
17h 06m
2 stops
MKE4:06 pmMilwaukee-Mitchell
$944

American Airlines flights from Milwaukee to Portugal

Our best American Airlines deals on Milwaukee to Portugal flight tickets
American Airlines
Oct 10
MKE6:05 amMilwaukee-Mitchell
21h 00m
1 stop
LIS9:05 amLisbon Humberto Delgado
Oct 18
LIS6:35 amLisbon Humberto Delgado
17h 05m
2 stops
MKE5:40 pmMilwaukee-Mitchell
$992
American Airlines
Oct 10
MKE3:01 pmMilwaukee-Mitchell
12h 04m
2 stops
LIS9:05 amLisbon Humberto Delgado
Oct 18
LIS6:35 amLisbon Humberto Delgado
17h 05m
2 stops
MKE5:40 pmMilwaukee-Mitchell
$1,099
American Airlines
Oct 10
MKE6:05 amMilwaukee-Mitchell
21h 00m
1 stop
LIS9:05 amLisbon Humberto Delgado
Oct 18
LIS11:05 amLisbon Humberto Delgado
13h 45m
1 stop
MKE6:50 pmMilwaukee-Mitchell
$1,167

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 April 18, 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

Wed 10/7

6:00 am-11:05 am

2 stops23h 05m

Lisbon Humberto Delgado

Wed 10/14

11:25 am-3:04 pm

2 stops33h 39m

$861

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 10/7

1:00 pm-2:55 pm

2 stops19h 55m

Lisbon Humberto Delgado

Wed 10/14

5:35 am-6:59 pm

2 stops19h 24m

$887
Quickest round-trip

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Mon 5/11

5:48 pm-2:55 pm

2 stops15h 07m

Lisbon Humberto Delgado

Sun 5/17

5:00 am-3:09 pm

2 stops16h 09m

$941

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Mon 5/11

5:48 pm-2:35 pm

2 stops14h 47m

Lisbon Humberto Delgado

Sun 5/17

5:00 am-4:06 pm

2 stops17h 06m

$944

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 10/7

1:00 pm-2:55 pm

2 stops19h 55m

Lisbon Humberto Delgado

Wed 10/14

10:00 am-8:08 pm

1 stop16h 08m

$955

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sat 10/10

6:05 am-9:05 am

1 stop21h 00m

Lisbon Humberto Delgado

Sun 10/18

6:35 am-5:40 pm

2 stops17h 05m

$992

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 5/19

4:26 pm-7:30 pm

2 stops21h 04m

Porto

Tue 5/26

8:40 pm-10:24 pm

2 stops31h 44m

$1,079

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Mon 7/6

11:30 am-10:45 am

1 stop17h 15m

Lisbon Humberto Delgado

Mon 7/20

5:35 am-6:17 pm

2 stops18h 42m

$1,089

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 5/26

7:15 am-10:30 am

1 stop21h 15m

Porto

Thu 6/4

5:00 am-3:09 pm

2 stops16h 09m

$1,156

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Tue 5/19

4:26 pm-7:30 pm

2 stops21h 04m

Porto

Tue 5/26

8:20 am-9:04 pm

2 stops18h 44m

$1,187

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

Can stopping save me money on Milwaukee to Portugal flights?

You could potentially save up to 28% 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

12h 30m

Direct flights

None
The fastest flight from Milwaukee to Portugal takes 12h 30m
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
United AirlinesPriceFrom $509Free CancellationRating
7.4
9,605 reviews
Search United Airlines flights
American AirlinesPriceFrom $778Free CancellationRating
7.1
11,604 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

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