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 64% 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.

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

WestJet, Air France, and KLM are the most popular carriers operating from Milwaukee-Mitchell 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?

There are 2 operators available for flights from Milwaukee-Mitchell Airport to Portugal as of May 2026.

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.

$585 Cheap Flights from Milwaukee to Portugal in 2026

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Find the cheapest flights from Milwaukee to Portugal

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 8:00 am

MKE

LIS

19h 00m

1 stop

5:00 am - 8:08 pm

LIS

MKE

21h 08m

2 stops

$786Delta

Sun, Nov 1 - Sat, Nov 7

5:45 am - 8:00 am

MKE

LIS

20h 15m

2 stops

5:00 am - 9:09 pm

LIS

MKE

22h 09m

2 stops

$790Delta

Sun, Nov 1 - Sat, Nov 7

11:15 am - 9:00 am

MKE

LIS

15h 45m

1 stop

10:00 am - 8:08 pm

LIS

MKE

16h 08m

1 stop

$797Multiple Airlines

Sun, Nov 1 - Sat, Nov 7

8:50 am - 6:50 am

MKE

OPO

40h 00m

2 stops

12:15 pm - 10:29 pm

OPO

MKE

40h 14m

2 stops

$930Air Canada

Sat, Jul 4 - Tue, Jul 14

5:29 pm - 6:50 am

MKE

OPO

55h 21m

2 stops

12:15 pm - 10:29 pm

OPO

MKE

40h 14m

2 stops

$936Air Canada

Fri, Jul 3 - Tue, Jul 14

8:45 pm - 9:20 am

MKE

LIS

30h 35m

2 stops

6:15 am - 4:46 pm

LIS

MKE

16h 31m

2 stops

$939United Airlines

Sun, Aug 16 - Wed, Aug 26

6:05 am - 9:05 am

MKE

LIS

21h 00m

1 stop

6:35 am - 5:40 pm

LIS

MKE

17h 05m

2 stops

$945American Airlines

Wed, Oct 7 - Wed, Oct 14

6:16 am - 9:05 am

MKE

LIS

20h 49m

1 stop

11:05 am - 11:23 pm

LIS

MKE

18h 18m

1 stop

$953American Airlines

Sun, Aug 16 - Wed, Aug 26

6:36 pm - 8:20 am

MKE

LIS

31h 44m

1 stop

7:25 am - 10:24 pm

LIS

MKE

20h 59m

2 stops

$970United Airlines

Sat, Oct 17 - Sat, Oct 24

9:36 am - 6:45 am

MKE

PDL

16h 09m

2 stops

6:05 pm - 8:46 am

PDL

MKE

19h 41m

1 stop

$1,501Multiple Airlines

Wed, Jun 17 - Wed, Jun 24

KLM flights from Milwaukee to Portugal

Our best KLM deals on Milwaukee to Portugal flight tickets

KLM

Aug 16

MKE6:45 amMilwaukee-Mitchell

19h 15m

1 stop

LIS8:00 amLisbon Humberto Delgado

Aug 26

LIS11:55 amLisbon Humberto Delgado

17h 58m

2 stops

MKE11:53 pmMilwaukee-Mitchell

$986

KLM

Jul 6

MKE11:30 amMilwaukee-Mitchell

17h 15m

1 stop

LIS10:45 amLisbon Humberto Delgado

Jul 20

LIS5:00 amLisbon Humberto Delgado

17h 02m

2 stops

MKE4:02 pmMilwaukee-Mitchell

$1,056

KLM

Jul 2

MKE12:07 pmMilwaukee-Mitchell

16h 33m

2 stops

OPO10:40 amPorto

Jul 12

OPO5:00 amPorto

17h 02m

2 stops

MKE4:02 pmMilwaukee-Mitchell

$1,216

British Airways flights from Milwaukee to Portugal

Our best British Airways deals on Milwaukee to Portugal flight tickets

British Airways

Aug 4

MKE6:55 pmMilwaukee-Mitchell

22h 05m

2 stops

LIS11:00 pmLisbon Humberto Delgado

Aug 10

LIS6:45 pmLisbon Humberto Delgado

32h 15m

2 stops

MKE9:00 pmMilwaukee-Mitchell

$1,030

British Airways

Sep 5

MKE6:46 pmMilwaukee-Mitchell

22h 24m

2 stops

LIS11:10 pmLisbon Humberto Delgado

Sep 14

LIS7:10 amLisbon Humberto Delgado

18h 27m

2 stops

MKE7:37 pmMilwaukee-Mitchell

$1,142

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 11/1

7:00 am-8:00 am

1 stop19h 00m

Lisbon Humberto Delgado

Sat 11/7

5:00 am-8:08 pm

2 stops21h 08m

$786

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 11/1

5:45 am-8:00 am

2 stops20h 15m

Lisbon Humberto Delgado

Sat 11/7

5:00 am-9:09 pm

2 stops22h 09m

$790

Quickest round-trip

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 11/1

11:15 am-9:00 am

1 stop15h 45m

Lisbon Humberto Delgado

Sat 11/7

10:00 am-8:08 pm

1 stop16h 08m

$797

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Sat 7/4

8:50 am-6:50 am

2 stops40h 00m

Porto

Tue 7/14

12:15 pm-10:29 pm

2 stops40h 14m

$930

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Fri 7/3

5:29 pm-6:50 am

2 stops55h 21m

Porto

Tue 7/14

12:15 pm-10:29 pm

2 stops40h 14m

$936

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 8/16

8:45 pm-9:20 am

2 stops30h 35m

Lisbon Humberto Delgado

Wed 8/26

6:15 am-4:46 pm

2 stops16h 31m

$939

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Wed 10/7

6:05 am-9:05 am

1 stop21h 00m

Lisbon Humberto Delgado

Wed 10/14

6:35 am-5:40 pm

2 stops17h 05m

$945

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sun 8/16

6:16 am-9:05 am

1 stop20h 49m

Lisbon Humberto Delgado

Wed 8/26

11:05 am-11:23 pm

1 stop18h 18m

$953

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Sat 10/17

6:36 pm-8:20 am

1 stop31h 44m

Lisbon Humberto Delgado

Sat 10/24

7:25 am-10:24 pm

2 stops20h 59m

$970

MilwaukeePonta Delgada

MKE - PDL

MKEPDL

Milwaukee-Mitchell

Wed 6/17

9:36 am-6:45 am

2 stops16h 09m

Ponta Delgada Nordela

Wed 6/24

6:05 pm-8:46 am

1 stop19h 41m

$1,501

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 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 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	14h 14m
Direct flights	None

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

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?
There are 2 operators available for flights from Milwaukee-Mitchell Airport to Portugal as of May 2026.
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 9,690 reviews		Search United Airlines flights
American Airlines	PriceFrom $778	Free Cancellation	Rating 7.1 11,669 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.

An easier way to manage your Portugal trip

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Popular cities

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Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $434

Flights to Portofrom $426

Flights to Funchalfrom $594

Flights to Farofrom $579

Flights to Ponta Delgadafrom $630

Flights to Lajesfrom $694

Flights to Pico Islandfrom $628

Flights to Hortafrom $866

Flights to Porto Santofrom $845

Flights to Velasfrom $754

Cheap flights from Milwaukee to Portugal from $585

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 8/28. 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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KLM flights from Milwaukee to Portugal

Our best KLM deals on Milwaukee to Portugal flight tickets

British Airways flights from Milwaukee to Portugal

Our best British Airways deals on Milwaukee to Portugal flight tickets

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How to get the cheapest flight ticket from Milwaukee to Portugal

What is the cheapest month to fly to Portugal?

Can stopping save me money on Milwaukee to Portugal flights?

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

What airlines fly to Portugal?

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

Direct flights

Frequently asked questions about flying from Milwaukee to Portugal

Best airlines flying from Milwaukee to Portugal

Compare and see reviews for airlines that fly from Milwaukee to Portugal with momondo

Why use momondo?

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Popular cities in Portugal

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

Milwaukee flight routes

According to popular flight searches on momondo this year

Portugal flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Portugal

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Portugal

List of cabin classes available on flights landing in Portugal. Availability may vary depending on flight origin and airline.

Complete your trip to Portugal

Explore popular destinations other users love

According to popular flight searches on momondo this year