What is the cheapest airline that flies from Milwaukee-Mitchell to Portugal?

Delta, United Airlines, and Air Canada are the most popular carriers operating from Milwaukee-Mitchell to Portugal

What airlines fly to Portugal?

TAP AIR PORTUGAL, United Airlines and British Airways are the top three most popular airlines that fly to Portugal from Milwaukee according to our data. TAP AIR PORTUGAL is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 18 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

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?

There are 4 operators available for flights from Milwaukee-Mitchell Airport to Portugal as of December 2025.

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.

$371 Cheap Flights from Milwaukee to Portugal in 2025/26

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Find the cheapest flights from Milwaukee to Portugal

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:29 am - 8:10 am

MKE

LIS

14h 41m1 stop

3:55 pm - 9:59 pm

LIS

MKE

36h 04m2 stops

$448Lufthansa

Tue, Jan 20 - Sun, Jan 25

8:33 am - 9:20 am

MKE

LIS

18h 47m2 stops

5:00 am - 9:59 pm

LIS

MKE

22h 59m2 stops

$497Multiple Airlines

Tue, Jan 20 - Sun, Jan 25

10:30 am - 8:10 am

MKE

LIS

15h 40m2 stops

5:00 am - 8:48 pm

LIS

MKE

21h 48m2 stops

$498United Airlines

Fri, Jan 23 - Tue, Jan 27

8:33 am - 11:40 am

MKE

OPO

21h 07m2 stops

6:00 am - 6:53 pm

OPO

MKE

18h 53m2 stops

$505United Airlines

Thu, Jan 22 - Mon, Jan 26

7:05 am - 8:00 am

MKE

LIS

18h 55m1 stop

10:00 am - 8:58 pm

LIS

MKE

16h 58m1 stop

$506KLM

Tue, Jan 20 - Sun, Jan 25

10:30 am - 2:45 pm

MKE

OPO

22h 15m2 stops

6:00 am - 10:56 pm

OPO

MKE

22h 56m2 stops

$506United Airlines

Thu, Jan 22 - Mon, Jan 26

10:30 am - 8:10 am

MKE

LIS

15h 40m2 stops

10:15 am - 4:58 pm

LIS

MKE

12h 43m1 stop

$510United Airlines

Fri, Jan 23 - Tue, Jan 27

7:03 am - 9:00 am

MKE

LIS

19h 57m1 stop

5:00 am - 8:06 pm

LIS

MKE

20h 06m2 stops

$596Delta

Fri, Mar 6 - Fri, Mar 13

7:03 am - 9:00 am

MKE

LIS

19h 57m1 stop

10:00 am - 8:06 pm

LIS

MKE

15h 06m1 stop

$606KLM

Fri, Mar 6 - Fri, Mar 13

12:14 pm - 2:50 pm

MKE

LIS

20h 36m2 stops

10:40 am - 11:05 pm

LIS

MKE

17h 25m2 stops

$607British Airways

Fri, Mar 6 - Fri, Mar 13

United Airlines flights from Milwaukee to Portugal

Our best United Airlines deals on Milwaukee to Portugal flight tickets

United Airlines

Jan 23

MKE10:30 amMilwaukee-Mitchell

15h 40m

2 stops

LIS8:10 amLisbon Humberto Delgado

Jan 27

LIS5:00 amLisbon Humberto Delgado

21h 48m

2 stops

MKE8:48 pmMilwaukee-Mitchell

$498

Find similar

United Airlines

Jan 22

MKE8:33 amMilwaukee-Mitchell

21h 07m

2 stops

OPO11:40 amPorto

Jan 26

OPO6:00 amPorto

18h 53m

2 stops

MKE6:53 pmMilwaukee-Mitchell

$505

Find similar

United Airlines

Jan 22

MKE10:30 amMilwaukee-Mitchell

22h 15m

2 stops

OPO2:45 pmPorto

Jan 26

OPO6:00 amPorto

22h 56m

2 stops

MKE10:56 pmMilwaukee-Mitchell

$506

Find similar

Air France flights from Milwaukee to Portugal

Our best Air France deals on Milwaukee to Portugal flight tickets

Air France

Mar 28

MKE1:10 pmMilwaukee-Mitchell

16h 05m

2 stops

LIS10:15 amLisbon Humberto Delgado

Apr 4

LIS10:00 amLisbon Humberto Delgado

16h 06m

1 stop

MKE8:06 pmMilwaukee-Mitchell

$1,232

Find similar

Air France

Dec 19

MKE7:05 amMilwaukee-Mitchell

19h 55m

1 stop

LIS9:00 amLisbon Humberto Delgado

Dec 26

LIS5:30 amLisbon Humberto Delgado

17h 13m

2 stops

MKE4:43 pmMilwaukee-Mitchell

$1,487

Find similar

Air France

Dec 19

MKE11:29 amMilwaukee-Mitchell

14h 31m

2 stops

LIS8:00 amLisbon Humberto Delgado

Dec 26

LIS5:30 amLisbon Humberto Delgado

17h 44m

2 stops

MKE5:14 pmMilwaukee-Mitchell

$1,492

Find similar

Fly from

Fly to

Route

Depart

Return

Price

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 1/20

11:29 am-8:10 am

1 stop14h 41m

Lisbon Humberto Delgado

Sun 1/25

3:55 pm-9:59 pm

2 stops36h 04m

$448

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 1/20

8:33 am-9:20 am

2 stops18h 47m

Lisbon Humberto Delgado

Sun 1/25

5:00 am-9:59 pm

2 stops22h 59m

$497

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 1/23

10:30 am-8:10 am

2 stops15h 40m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-8:48 pm

2 stops21h 48m

$498

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Thu 1/22

8:33 am-11:40 am

2 stops21h 07m

Porto

Mon 1/26

6:00 am-6:53 pm

2 stops18h 53m

$505

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Tue 1/20

7:05 am-8:00 am

1 stop18h 55m

Lisbon Humberto Delgado

Sun 1/25

10:00 am-8:58 pm

1 stop16h 58m

$506

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Thu 1/22

10:30 am-2:45 pm

2 stops22h 15m

Porto

Mon 1/26

6:00 am-10:56 pm

2 stops22h 56m

$506

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 1/23

10:30 am-8:10 am

2 stops15h 40m

Lisbon Humberto Delgado

Tue 1/27

10:15 am-4:58 pm

1 stop12h 43m

$510

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 3/6

7:03 am-9:00 am

1 stop19h 57m

Lisbon Humberto Delgado

Fri 3/13

5:00 am-8:06 pm

2 stops20h 06m

$596

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 3/6

7:03 am-9:00 am

1 stop19h 57m

Lisbon Humberto Delgado

Fri 3/13

10:00 am-8:06 pm

1 stop15h 06m

$606

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 3/6

12:14 pm-2:50 pm

2 stops20h 36m

Lisbon Humberto Delgado

Fri 3/13

10:40 am-11:05 pm

2 stops17h 25m

$607

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 $673, 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 $698.

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.

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 40m
Direct flights	None

The fastest flight from Milwaukee to Portugal takes 14h 40m

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?
There are 4 operators available for flights from Milwaukee-Mitchell Airport to Portugal as of December 2025.
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 Airlines	PriceFrom $509	Free Cancellation	Rating 7.4 9,094 reviews	Search United Airlines flights
Delta	PriceFrom $668	Free Cancellation	Rating 7.9 8,008 reviews	Search Delta flights
American Airlines	PriceFrom $703	Free Cancellation	Rating 7.2 11,049 reviews	Search American Airlines flights
KLM	PriceFrom $827	Free Cancellation	Rating 7.7 1,432 reviews	Search KLM 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.