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 16 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?

Delta and United Airlines 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 3 operators available for flights from Milwaukee-Mitchell Airport to Portugal as of November 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.

$386 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.

4:15 pm - 2:55 pmMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

16h 40m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

9:20 am - 9:09 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

17h 49m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$751Multiple Airlines

Tue, Apr 20 - Tue, Apr 27

3:34 pm - 4:50 pmMKE Milwaukee-Mitchell-OPO Porto

19h 16m2 stops Chicago O'Hare Intl London Heathrow

8:40 pm - 7:32 pmOPO Porto-MKE Milwaukee-Mitchell

28h 52m2 stops Madrid Barajas Chicago O'Hare Intl

$770British Airways

Wed, Jan 6 - Tue, Jan 19

6:00 am - 10:35 amMKE Milwaukee-Mitchell-OPO Porto

22h 35m2 stops Boston Logan Intl Paris Charles de Gaulle

5:00 am - 8:12 pmOPO Porto-MKE Milwaukee-Mitchell

21h 12m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$774Delta

Wed, Jan 6 - Tue, Jan 19

10:38 am - 8:10 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

15h 32m2 stops Chicago O'Hare Intl Newark

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

18h 51m2 stops Frankfurt am Main Chicago O'Hare Intl

$776United Airlines

Mon, Dec 7 - Tue, Dec 22

7:10 pm - 8:10 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

31h 00m1 stop Newark

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

18h 51m2 stops Frankfurt am Main Chicago O'Hare Intl

$777United Airlines

Mon, Dec 7 - Tue, Dec 22

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

21h 05m1 stop Philadelphia

11:05 am - 9:40 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

16h 35m1 stop Philadelphia

$784American Airlines

Mon, Dec 7 - Tue, Dec 22

11:40 am - 8:10 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

14h 30m1 stop Newark

11:20 am - 5:01 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

35h 41m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$798United Airlines

Mon, Feb 22 - Thu, Feb 25

7:00 pm - 1:40 pmMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

36h 40m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

7:25 am - 10:39 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

21h 14m2 stops Frankfurt am Main Chicago O'Hare Intl

$801Lufthansa

Tue, Apr 6 - Tue, Apr 13

12:21 pm - 11:20 amMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

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

5:00 am - 6:04 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

19h 04m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$849Delta

Wed, Jan 13 - Sun, Apr 18

3:26 pm - 3:10 pmMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

17h 44m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

5:35 am - 4:07 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

16h 32m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County

$857Delta

Wed, Jan 13 - Sat, Apr 17

Cheap last minute flights

Enter your travel dates to find the best prices.

8:00 am - 8:15 amMKE Milwaukee-Mitchell-OPO Porto

18h 15m1 stop New York John F Kennedy Intl

5:55 am - 11:54 pmOPO Porto-MKE Milwaukee-Mitchell

23h 59m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson

$873Delta

Sun, Nov 8 - Sun, Nov 15

1:24 pm - 10:35 amMKE Milwaukee-Mitchell-OPO Porto

15h 11m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

5:55 am - 11:54 pmOPO Porto-MKE Milwaukee-Mitchell

23h 59m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson

$876Delta

Sun, Nov 8 - Sun, Nov 15

7:29 pm - 12:05 pmMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

34h 36m2 stops Chicago O'Hare Intl London Heathrow

7:05 am - 10:37 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

21h 32m2 stops London Heathrow Chicago O'Hare Intl

$895British Airways

Tue, Nov 10 - Sun, Nov 15

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

19h 25m1 stop Boston Logan Intl

5:30 am - 9:03 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

21h 33m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson

$954Delta

Tue, Nov 10 - Sun, Nov 15

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

15h 03m1 stop Newark

10:15 am - 10:50 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

18h 35m1 stop Newark

$1,250United Airlines

Tue, Nov 10 - Sun, Nov 15

7:03 pm - 9:30 amMKE Milwaukee-Mitchell-OPO Porto

32h 27m1 stop Newark

12:35 pm - 10:50 pmOPO Porto-MKE Milwaukee-Mitchell

16h 15m1 stop Newark

$1,746Lufthansa

Sun, Nov 8 - Sun, Nov 15

6:10 am - 8:20 amMKE Milwaukee-Mitchell-PDL Ponta Delgada Nordela

21h 10m2 stops Newark Lisbon Humberto Delgado

6:30 am - 10:50 pmPDL Ponta Delgada Nordela-MKE Milwaukee-Mitchell

21h 20m2 stops Lisbon Humberto Delgado Newark

$2,752TAP AIR PORTUGAL

Sat, Nov 7 - Sat, Nov 14

5:00 am - 6:25 amMKE Milwaukee-Mitchell-PDL Ponta Delgada Nordela

20h 25m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

6:30 am - 12:36 pmPDL Ponta Delgada Nordela-MKE Milwaukee-Mitchell

35h 06m3 stops Lisbon Humberto Delgado Toronto Pearson Intl Detroit Metropolitan Wayne County

$3,105Multiple Airlines

Sat, Nov 7 - Sat, Nov 14

2:23 pm - 6:50 amMKE Milwaukee-Mitchell-PDL Ponta Delgada Nordela

35h 27m3 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

6:30 am - 12:36 pmPDL Ponta Delgada Nordela-MKE Milwaukee-Mitchell

35h 06m3 stops Lisbon Humberto Delgado Toronto Pearson Intl Detroit Metropolitan Wayne County

$3,191Multiple Airlines

Sat, Nov 7 - Sat, Nov 14

7:40 am - 12:05 pmMKE Milwaukee-Mitchell-LIS Lisbon Humberto Delgado

46h 25m3 stops Chicago O'Hare Intl Hong Kong Intl London Heathrow

7:45 am - 6:34 pmLIS Lisbon Humberto Delgado-MKE Milwaukee-Mitchell

40h 49m3 stops Madrid Barajas Hong Kong Intl Chicago O'Hare Intl

$13,261Multiple Airlines

Tue, Nov 10 - Sun, Nov 15

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Lufthansa flights from Milwaukee to Portugal

Our best Lufthansa deals on Milwaukee to Portugal flight tickets

Lufthansa

Apr 6

MKE7:00 pmMilwaukee-Mitchell

36h 40m

2 stops

LIS1:40 pmLisbon Humberto Delgado

Apr 13

LIS7:25 amLisbon Humberto Delgado

21h 14m

2 stops

MKE10:39 pmMilwaukee-Mitchell

$801

Lufthansa

Mar 17

MKE6:20 pmMilwaukee-Mitchell

24h 10m

2 stops

LIS11:30 pmLisbon Humberto Delgado

Mar 29

LIS2:30 pmLisbon Humberto Delgado

38h 09m

2 stops

MKE10:39 pmMilwaukee-Mitchell

$807

Lufthansa

Nov 11

MKE2:23 pmMilwaukee-Mitchell

27h 07m

2 stops

LIS11:30 pmLisbon Humberto Delgado

Nov 16

LIS2:20 pmLisbon Humberto Delgado

36h 32m

2 stops

MKE8:52 pmMilwaukee-Mitchell

$828

Iberia flights from Milwaukee to Portugal

Our best Iberia deals on Milwaukee to Portugal flight tickets

Iberia

Nov 13

MKE2:55 pmMilwaukee-Mitchell

23h 10m

2 stops

LIS8:05 pmLisbon Humberto Delgado

Nov 16

LIS6:50 pmLisbon Humberto Delgado

29h 44m

2 stops

MKE6:34 pmMilwaukee-Mitchell

$897

Iberia

May 1

MKE1:53 pmMilwaukee-Mitchell

24h 07m

2 stops

OPO8:00 pmPorto

May 10

OPO8:40 pmPorto

29h 17m

2 stops

MKE7:57 pmMilwaukee-Mitchell

$948

Iberia

Mar 21

MKE2:23 pmMilwaukee-Mitchell

20h 42m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Mar 31

LIS8:45 pmLisbon Humberto Delgado

29h 15m

2 stops

MKE8:00 pmMilwaukee-Mitchell

$974

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Tue 4/20

4:15 pm-2:55 pm

2 stops16h 40m

Lisbon Humberto Delgado

Tue 4/27

9:20 am-9:09 pm

2 stops17h 49m

$751

MilwaukeePorto

MKE Milwaukee-Mitchell - OPO Porto

MKEOPO

Milwaukee-Mitchell

Wed 1/6

3:34 pm-4:50 pm

2 stops19h 16m

Porto

Tue 1/19

8:40 pm-7:32 pm

2 stops28h 52m

$770

MilwaukeePorto

MKE Milwaukee-Mitchell - OPO Porto

MKEOPO

Milwaukee-Mitchell

Wed 1/6

6:00 am-10:35 am

2 stops22h 35m

Porto

Tue 1/19

5:00 am-8:12 pm

2 stops21h 12m

$774

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Mon 12/7

10:38 am-8:10 am

2 stops15h 32m

Lisbon Humberto Delgado

Tue 12/22

5:00 am-5:51 pm

2 stops18h 51m

$776

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Mon 12/7

7:10 pm-8:10 am

1 stop31h 00m

Lisbon Humberto Delgado

Tue 12/22

5:00 am-5:51 pm

2 stops18h 51m

$777

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Mon 12/7

6:00 am-9:05 am

1 stop21h 05m

Lisbon Humberto Delgado

Tue 12/22

11:05 am-9:40 pm

1 stop16h 35m

$784

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Mon 2/22

11:40 am-8:10 am

1 stop14h 30m

Lisbon Humberto Delgado

Thu 2/25

11:20 am-5:01 pm

2 stops35h 41m

$798

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Tue 4/6

7:00 pm-1:40 pm

2 stops36h 40m

Lisbon Humberto Delgado

Tue 4/13

7:25 am-10:39 pm

2 stops21h 14m

$801

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Wed 1/13

12:21 pm-11:20 am

2 stops16h 59m

Lisbon Humberto Delgado

Sun 4/18

5:00 am-6:04 pm

2 stops19h 04m

$849

Quickest round-trip

MilwaukeeLisbon

MKE Milwaukee-Mitchell - LIS Lisbon Humberto Delgado

MKELIS

Milwaukee-Mitchell

Wed 1/13

3:26 pm-3:10 pm

2 stops17h 44m

Lisbon Humberto Delgado

Sat 4/17

5:35 am-4:07 pm

2 stops16h 32m

$857

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 34% 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	$386
Fastest flight time	14h 30m
Direct flights	None

The best one-way flight to Portugal from Milwaukee in the past 72 hours is $386. The best round-trip flight deal from Milwaukee to Portugal found on momondo in the last 72 hours is $751.

The fastest flight from Milwaukee to Portugal takes 14h 30m

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 November 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 8,696 reviews	Search Delta flights
United Airlines	PriceFrom $509	Free Cancellation	Rating 7.3 10,459 reviews	Search United Airlines flights
American Airlines	PriceFrom $808	Free Cancellation	Rating 7.0 12,229 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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Popular cities

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Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $364

Flights to Portofrom $400

Flights to Funchalfrom $585

Flights to Farofrom $549

Flights to Ponta Delgadafrom $310

Flights to Lajesfrom $313

Flights to Hortafrom $883

Flights to Pico Islandfrom $699

Flights to Porto Santofrom $791

Flights to Velasfrom $691

Cheap flights from Milwaukee to Portugal from $386

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 3/17. 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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Lufthansa flights from Milwaukee to Portugal

Our best Lufthansa deals on Milwaukee to Portugal flight tickets

Iberia flights from Milwaukee to Portugal

Our best Iberia deals on Milwaukee to Portugal flight tickets

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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