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

Delta is the most popular carrier operating from Milwaukee-Mitchell to Portugal

What airlines fly to Portugal?

TAP AIR PORTUGAL, United Airlines and American Airlines 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 67% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 17 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 3 operators available for flights from Milwaukee-Mitchell Airport to Portugal as of September 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.

$463 Cheap Flights from Milwaukee to Portugal in 2026

Discover deals from 900+ travel sites with momondo.

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.

12:36 pm - 10:35 amMKE Milwaukee-Mitchell-OPO Porto

16h 59m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

5:00 am - 7:30 pmOPO Porto-MKE Milwaukee-Mitchell

20h 30m2 stops Amsterdam Schiphol Minneapolis St Paul

$726Multiple Airlines

Mon, Oct 26 - Wed, Nov 4

5:53 pm - 6:55 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

31h 02m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

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

11:10 am - 8:10 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

15h 00m1 stop Newark

11:20 am - 6:08 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

36h 48m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$732United Airlines

Wed, Jan 6 - Fri, Jan 15

7:35 am - 9:00 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

19h 25m1 stop Boston Logan Intl

5:00 am - 9:51 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

22h 51m2 stops Amsterdam Schiphol Minneapolis St Paul

$736Delta

Tue, Dec 1 - Fri, Dec 11

8:29 am - 8:10 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

17h 41m2 stops Chicago O'Hare Intl Newark

11:20 am - 5:31 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

36h 11m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$736United Airlines

Wed, Jan 6 - Fri, Jan 15

12:37 pm - 9:05 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

14h 28m1 stop Philadelphia

11:05 am - 10:55 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

17h 50m1 stop Philadelphia

$747American Airlines

Tue, Dec 1 - Fri, Dec 11

8:00 am - 8:00 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

18h 00m1 stop New York John F Kennedy Intl

10:00 am - 8:08 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

16h 08m1 stop New York John F Kennedy Intl

$751Air France

Wed, Jan 6 - Fri, Jan 15

11:29 am - 9:00 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

16h 31m1 stop Boston Logan Intl

11:30 am - 11:53 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

18h 23m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$786Delta

Tue, Oct 27 - Mon, Nov 2

2:23 pm - 9:20 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

36h 57m2 stops Chicago O'Hare Intl Toronto Pearson Intl

12:50 pm - 9:56 amLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

27h 06m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$854Air Canada

Sat, Nov 21 - Tue, Dec 1

6:00 am - 9:05 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

21h 05m1 stop Philadelphia

11:05 am - 8:18 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

15h 13m1 stop Philadelphia

$959American Airlines

Sat, Nov 21 - Tue, Dec 1

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

United Airlines flights from Milwaukee to Portugal

Our best United Airlines deals on Milwaukee to Portugal flight tickets

United Airlines

Dec 1

MKE5:53 pmMilwaukee-Mitchell

31h 02m

2 stops

LIS6:55 amLisbon Humberto Delgado

Dec 11

LIS11:20 amLisbon Humberto Delgado

36h 48m

2 stops

MKE6:08 pmMilwaukee-Mitchell

$730

United Airlines

Jan 6

MKE11:10 amMilwaukee-Mitchell

15h 00m

1 stop

LIS8:10 amLisbon Humberto Delgado

Jan 15

LIS11:20 amLisbon Humberto Delgado

36h 48m

2 stops

MKE6:08 pmMilwaukee-Mitchell

$732

United Airlines

Oct 20

MKE6:00 amMilwaukee-Mitchell

20h 20m

1 stop

LIS8:20 amLisbon Humberto Delgado

Oct 27

LIS6:05 amLisbon Humberto Delgado

16h 38m

2 stops

MKE5:43 pmMilwaukee-Mitchell

$816

Aer Lingus flights from Milwaukee to Portugal

Our best Aer Lingus deals on Milwaukee to Portugal flight tickets

Aer Lingus

Sep 14

MKE1:18 pmMilwaukee-Mitchell

26h 17m

2 stops

LIS9:35 pmLisbon Humberto Delgado

Sep 22

LIS10:15 pmLisbon Humberto Delgado

29h 39m

2 stops

MKE9:54 pmMilwaukee-Mitchell

$1,104

Aer Lingus

Sep 15

MKE11:37 amMilwaukee-Mitchell

27h 58m

2 stops

LIS9:35 pmLisbon Humberto Delgado

Sep 22

LIS10:15 pmLisbon Humberto Delgado

29h 39m

2 stops

MKE9:54 pmMilwaukee-Mitchell

$1,142

Aer Lingus

Sep 14

MKE1:18 pmMilwaukee-Mitchell

26h 17m

2 stops

LIS9:35 pmLisbon Humberto Delgado

Sep 22

LIS10:15 pmLisbon Humberto Delgado

39h 46m

2 stops

MKE8:01 amMilwaukee-Mitchell

$1,144

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MilwaukeePorto

MKE Milwaukee-Mitchell - OPO Porto

MKEOPO

Milwaukee-Mitchell

Mon 10/26

12:36 pm-10:35 am

2 stops16h 59m

Porto

Wed 11/4

5:00 am-7:30 pm

2 stops20h 30m

$726

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Tue 12/1

5:53 pm-6:55 am

2 stops31h 02m

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 1/6

11:10 am-8:10 am

1 stop15h 00m

Lisbon Humberto Delgado

Fri 1/15

11:20 am-6:08 pm

2 stops36h 48m

$732

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Tue 12/1

7:35 am-9:00 am

1 stop19h 25m

Lisbon Humberto Delgado

Fri 12/11

5:00 am-9:51 pm

2 stops22h 51m

$736

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Wed 1/6

8:29 am-8:10 am

2 stops17h 41m

Lisbon Humberto Delgado

Fri 1/15

11:20 am-5:31 pm

2 stops36h 11m

$736

Quickest round-trip

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Tue 12/1

12:37 pm-9:05 am

1 stop14h 28m

Lisbon Humberto Delgado

Fri 12/11

11:05 am-10:55 pm

1 stop17h 50m

$747

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Wed 1/6

8:00 am-8:00 am

1 stop18h 00m

Lisbon Humberto Delgado

Fri 1/15

10:00 am-8:08 pm

1 stop16h 08m

$751

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Tue 10/27

11:29 am-9:00 am

1 stop16h 31m

Lisbon Humberto Delgado

Mon 11/2

11:30 am-11:53 pm

2 stops18h 23m

$786

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Sat 11/21

2:23 pm-9:20 am

2 stops36h 57m

Lisbon Humberto Delgado

Tue 12/1

12:50 pm-9:56 am

2 stops27h 06m

$854

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Sat 11/21

6:00 am-9:05 am

1 stop21h 05m

Lisbon Humberto Delgado

Tue 12/1

11:05 am-8:18 pm

1 stop15h 13m

$959

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 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 3% 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

Best Price Found	$463
Fastest flight time	14h 11m
Direct flights	None

The best one-way flight to Portugal from Milwaukee in the past 72 hours is $463. The best round-trip flight deal from Milwaukee to Portugal found on momondo in the last 72 hours is $726.

The fastest flight from Milwaukee to Portugal takes 14h 11m

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 3 operators available for flights from Milwaukee-Mitchell Airport to Portugal as of September 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
Delta	PriceFrom $509	Free Cancellation	Rating 7.8 8,549 reviews	Search Delta flights
United Airlines	PriceFrom $509	Free Cancellation	Rating 7.4 10,173 reviews	Search United Airlines flights
American Airlines	PriceFrom $808	Free Cancellation	Rating 7.1 12,042 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

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Wed 10/7

Wed 10/14

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Popular cities

Other flights from Milwaukee

Other flights to Portugal

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $396

Flights to Portofrom $526

Flights to Funchalfrom $589

Flights to Farofrom $574

Flights to Ponta Delgadafrom $554

Flights to Lajesfrom $577

Flights to Hortafrom $591

Flights to Pico Islandfrom $588

Flights to Porto Santofrom $942

Flights to Velasfrom $583

Cheap flights from Milwaukee to Portugal from $463

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 11/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Milwaukee to Portugal

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

United Airlines flights from Milwaukee to Portugal

Our best United Airlines deals on Milwaukee to Portugal flight tickets

Aer Lingus flights from Milwaukee to Portugal

Our best Aer Lingus deals on Milwaukee to Portugal flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Milwaukee to Portugal that are best for you.

See travel insights to Portugal from

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

Best Price Found

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