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

Aer Lingus and American Airlines are the most popular carriers 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 68% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 16 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 October 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.

$388 Cheap Flights from Milwaukee to Portugal in 2026/27

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.

6:00 am - 8:10 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

20h 10m1 stop Newark

5:00 am - 10:15 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

23h 15m2 stops Frankfurt am Main Chicago O'Hare Intl

$733United Airlines

Wed, Nov 11 - Wed, Nov 18

8:50 am - 8:10 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

17h 20m2 stops Chicago O'Hare Intl Newark

5:00 am - 6:06 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

19h 06m2 stops Frankfurt am Main Newark

$738United Airlines

Wed, Nov 11 - Wed, Nov 18

11:07 am - 8:10 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

15h 03m1 stop Newark

10:15 am - 6:06 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

13h 51m1 stop Newark

$746United Airlines

Wed, Nov 11 - Wed, Nov 18

2:51 pm - 2:55 pmMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

18h 04m2 stops Chicago O'Hare Intl London Heathrow

6:30 am - 6:43 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

18h 13m2 stops Madrid Barajas Chicago O'Hare Intl

$769Multiple Airlines

Fri, Dec 4 - Wed, Dec 9

2:30 pm - 9:00 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

12h 30m1 stop Boston Logan Intl

11:15 am - 8:27 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

15h 12m1 stop Boston Logan Intl

$775Virgin Atlantic

Tue, Nov 17 - Tue, Nov 24

7:45 am - 8:00 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

18h 15m1 stop New York John F Kennedy Intl

5:00 am - 9:31 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

22h 31m2 stops Amsterdam Schiphol Minneapolis St Paul

$785Delta

Fri, Dec 4 - Wed, Dec 9

7:45 am - 8:00 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

18h 15m1 stop New York John F Kennedy Intl

10:00 am - 8:52 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

16h 52m1 stop New York John F Kennedy Intl

$796Air France

Fri, Dec 4 - Wed, Dec 9

11:29 am - 8:55 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

15h 26m1 stop Boston Logan Intl

5:00 am - 9:01 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

22h 01m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$800Delta

Sun, Nov 1 - Tue, Nov 17

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

14h 28m1 stop Philadelphia

7:05 am - 7:03 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

17h 58m2 stops London Heathrow Chicago O'Hare Intl

$1,066American Airlines

Thu, Nov 19 - Mon, Nov 30

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

14h 28m1 stop Philadelphia

11:05 am - 10:49 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

17h 44m1 stop Philadelphia

$1,208American Airlines

Thu, Nov 19 - Mon, Nov 30

Cheap last minute flights

Enter your travel dates to find the best prices.

11:29 am - 10:45 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

17h 16m1 stop Boston Logan Intl

5:00 am - 9:13 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

22h 13m2 stops Amsterdam Schiphol Minneapolis St Paul

$1,224Delta

Tue, Oct 6 - Mon, Oct 12

4:56 pm - 2:55 pmMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

15h 59m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

5:00 am - 9:13 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

22h 13m2 stops Amsterdam Schiphol Minneapolis St Paul

$1,228Delta

Tue, Oct 6 - Mon, Oct 12

6:00 am - 8:20 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

20h 20m1 stop Newark

5:05 am - 7:10 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

20h 05m2 stops Frankfurt am Main Chicago O'Hare Intl

$1,255United Airlines

Tue, Oct 6 - Mon, Oct 12

6:00 am - 8:20 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

20h 20m1 stop Newark

10:25 am - 10:48 amLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

30h 23m1 stop Newark

$1,345United Airlines

Tue, Oct 6 - Mon, Oct 12

6:10 am - 9:05 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

20h 55m1 stop Philadelphia

11:05 am - 11:34 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

18h 29m1 stop Philadelphia

$1,533American Airlines

Tue, Oct 6 - Mon, Oct 12

12:05 pm - 10:50 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

16h 45m3 stops Chicago O'Hare Intl Toronto Pearson Intl London Heathrow

11:25 am - 9:25 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

16h 00m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$2,514Multiple Airlines

Tue, Oct 6 - Mon, Oct 12

12:05 pm - 10:50 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

16h 45m3 stops Chicago O'Hare Intl Toronto Pearson Intl London Heathrow

1:00 pm - 10:59 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

15h 59m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$2,519Multiple Airlines

Tue, Oct 6 - Mon, Oct 12

8:45 am - 2:10 pmMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

47h 25m3 stops Chicago O'Hare Intl Hong Kong Intl London Heathrow

5:55 am - 7:58 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

44h 03m3 stops Zurich Hong Kong Intl Chicago O'Hare Intl

$13,274Multiple Airlines

Tue, Oct 6 - Mon, Oct 12

7:45 am - 10:05 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

44h 20m3 stops Chicago O'Hare Intl Hong Kong Intl London Heathrow

5:05 am - 7:58 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

44h 53m3 stops Frankfurt am Main Hong Kong Intl Chicago O'Hare Intl

$13,291Multiple Airlines

Tue, Oct 6 - Mon, Oct 12

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Virgin Atlantic flights from Milwaukee to Portugal

Our best Virgin Atlantic deals on Milwaukee to Portugal flight tickets

Virgin Atlantic

Nov 17

MKE2:30 pmMilwaukee-Mitchell

12h 30m

1 stop

LIS9:00 amLisbon Humberto Delgado

Nov 24

LIS11:15 amLisbon Humberto Delgado

15h 12m

1 stop

MKE8:27 pmMilwaukee-Mitchell

$775

Virgin Atlantic

Nov 1

MKE11:29 amMilwaukee-Mitchell

15h 26m

1 stop

LIS8:55 amLisbon Humberto Delgado

Nov 17

LIS11:15 amLisbon Humberto Delgado

15h 12m

1 stop

MKE8:27 pmMilwaukee-Mitchell

$811

Lufthansa flights from Milwaukee to Portugal

Our best Lufthansa deals on Milwaukee to Portugal flight tickets

Lufthansa

Nov 1

MKE6:18 pmMilwaukee-Mitchell

35h 12m

2 stops

LIS11:30 amLisbon Humberto Delgado

Nov 17

LIS5:00 amLisbon Humberto Delgado

21h 52m

2 stops

MKE8:52 pmMilwaukee-Mitchell

$871

Lufthansa

Nov 14

MKE6:10 amMilwaukee-Mitchell

21h 20m

1 stop

OPO9:30 amPorto

Nov 21

OPO12:35 pmPorto

16h 15m

1 stop

MKE10:50 pmMilwaukee-Mitchell

$891

Lufthansa

Nov 26

MKE10:48 amMilwaukee-Mitchell

31h 07m

2 stops

OPO11:55 pmPorto

Nov 30

OPO1:45 pmPorto

37h 10m

2 stops

MKE8:55 pmMilwaukee-Mitchell

$898

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Wed 11/11

6:00 am-8:10 am

1 stop20h 10m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-10:15 pm

2 stops23h 15m

$733

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Wed 11/11

8:50 am-8:10 am

2 stops17h 20m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-6:06 pm

2 stops19h 06m

$738

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Wed 11/11

11:07 am-8:10 am

1 stop15h 03m

Lisbon Humberto Delgado

Wed 11/18

10:15 am-6:06 pm

1 stop13h 51m

$746

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Fri 12/4

2:51 pm-2:55 pm

2 stops18h 04m

Lisbon Humberto Delgado

Wed 12/9

6:30 am-6:43 pm

2 stops18h 13m

$769

Quickest round-trip

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Tue 11/17

2:30 pm-9:00 am

1 stop12h 30m

Lisbon Humberto Delgado

Tue 11/24

11:15 am-8:27 pm

1 stop15h 12m

$775

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Fri 12/4

7:45 am-8:00 am

1 stop18h 15m

Lisbon Humberto Delgado

Wed 12/9

5:00 am-9:31 pm

2 stops22h 31m

$785

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Fri 12/4

7:45 am-8:00 am

1 stop18h 15m

Lisbon Humberto Delgado

Wed 12/9

10:00 am-8:52 pm

1 stop16h 52m

$796

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Sun 11/1

11:29 am-8:55 am

1 stop15h 26m

Lisbon Humberto Delgado

Tue 11/17

5:00 am-9:01 pm

2 stops22h 01m

$800

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Thu 11/19

12:37 pm-9:05 am

1 stop14h 28m

Lisbon Humberto Delgado

Mon 11/30

7:05 am-7:03 pm

2 stops17h 58m

$1,066

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Thu 11/19

12:37 pm-9:05 am

1 stop14h 28m

Lisbon Humberto Delgado

Mon 11/30

11:05 am-10:49 pm

1 stop17h 44m

$1,208

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	$388
Fastest flight time	15h 03m
Direct flights	None

The best one-way flight to Portugal from Milwaukee in the past 72 hours is $388. The best round-trip flight deal from Milwaukee to Portugal found on momondo in the last 72 hours is $733.

The fastest flight from Milwaukee to Portugal takes 15h 03m

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 October 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 8,626 reviews	Search Delta flights
United Airlines	PriceFrom $509	Free Cancellation	Rating 7.4 10,283 reviews	Search United Airlines flights
American Airlines	PriceFrom $808	Free Cancellation	Rating 7.0 12,129 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 $398

Flights to Portofrom $406

Flights to Funchalfrom $418

Flights to Farofrom $407

Flights to Ponta Delgadafrom $557

Flights to Lajesfrom $571

Flights to Hortafrom $577

Flights to Pico Islandfrom $812

Flights to Porto Santofrom $935

Flights to Velasfrom $578

Cheap flights from Milwaukee to Portugal from $388

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 1/7. 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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Virgin Atlantic flights from Milwaukee to Portugal

Our best Virgin Atlantic deals on Milwaukee to Portugal flight tickets

Lufthansa flights from Milwaukee to Portugal

Our best Lufthansa 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