Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Milwaukee to Portugal from $399

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 1/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Milwaukee to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:00 am - 8:10 amMKE-LIS
21h 10m2 stops
United Airlines Logo
11:20 am - 3:43 pmLIS-MKE
34h 23m2 stops
$487United Airlines
Find Deal
Thu, Jan 8 - Thu, Jan 15
Lufthansa Logo
11:29 am - 8:10 amMKE-LIS
14h 41m1 stop
Lufthansa Logo
6:10 am - 9:59 pmLIS-MKE
21h 49m2 stops
$489Lufthansa
Find Deal
Fri, Jan 30 - Fri, Feb 6
Delta Logo
10:13 am - 10:30 amMKE-OPO
18h 17m2 stops
Delta Logo
6:05 am - 7:58 pmOPO-MKE
19h 53m2 stops
$492Delta
Find Deal
Fri, Jan 30 - Tue, Feb 3
Lufthansa Logo
11:29 am - 8:10 amMKE-LIS
14h 41m1 stop
Lufthansa Logo
5:00 am - 3:43 pmLIS-MKE
16h 43m2 stops
$493Lufthansa
Find Deal
Fri, Jan 30 - Tue, Feb 3
United Airlines Logo
11:30 am - 8:10 amMKE-LIS
14h 40m2 stops
United Airlines Logo
10:55 am - 8:48 pmLIS-MKE
39h 53m2 stops
$494United Airlines
Find Deal
Fri, Jan 30 - Fri, Feb 6
KLM Logo
7:02 am - 8:00 amMKE-LIS
18h 58m1 stop
KLM Logo
10:00 am - 8:58 pmLIS-MKE
16h 58m1 stop
$506KLM
Find Deal
Fri, Jan 30 - Fri, Feb 6
Air Canada Logo
12:04 pm - 9:20 amMKE-LIS
15h 16m2 stops
Air Canada Logo
10:55 am - 1:44 pmLIS-MKE
32h 49m2 stops
$582Air Canada
Find Deal
Thu, Dec 4 - Thu, Dec 11
KLM Logo
7:05 am - 8:55 amMKE-LIS
19h 50m1 stop
KLM Logo
5:00 am - 4:07 pmLIS-MKE
17h 07m2 stops
$589KLM
Find Deal
Thu, Dec 4 - Thu, Dec 11
Delta Logo
7:02 am - 9:00 amMKE-LIS
19h 58m1 stop
Delta Logo
5:00 am - 7:01 pmLIS-MKE
19h 01m2 stops
$596Delta
Find Deal
Fri, Mar 6 - Fri, Mar 13
American Airlines Logo
3:13 pm - 8:00 pmMKE-OPO
22h 47m2 stops
American Airlines Logo
8:20 am - 9:27 pmOPO-MKE
19h 07m2 stops
$1,354American Airlines
Find Deal
Fri, May 15 - Tue, May 26

Lufthansa flights from Milwaukee to Portugal

Our best Lufthansa deals on Milwaukee to Portugal flight tickets
Lufthansa
Jan 30
MKE11:29 amMilwaukee-Mitchell
14h 41m
1 stop
LIS8:10 amLisbon Humberto Delgado
Feb 6
LIS6:10 amLisbon Humberto Delgado
21h 49m
2 stops
MKE9:59 pmMilwaukee-Mitchell
$489
Find similar
Lufthansa
Jan 30
MKE11:29 amMilwaukee-Mitchell
14h 41m
1 stop
LIS8:10 amLisbon Humberto Delgado
Feb 3
LIS5:00 amLisbon Humberto Delgado
16h 43m
2 stops
MKE3:43 pmMilwaukee-Mitchell
$493
Find similar
Lufthansa
Mar 27
MKE11:00 amMilwaukee-Mitchell
17h 30m
1 stop
OPO9:30 amPorto
Mar 31
OPO6:00 amPorto
17h 54m
2 stops
MKE5:54 pmMilwaukee-Mitchell
$893
Find similar

Air Canada flights from Milwaukee to Portugal

Our best Air Canada deals on Milwaukee to Portugal flight tickets
Air Canada
Dec 4
MKE12:04 pmMilwaukee-Mitchell
15h 16m
2 stops
LIS9:20 amLisbon Humberto Delgado
Dec 11
LIS10:55 amLisbon Humberto Delgado
32h 49m
2 stops
MKE1:44 pmMilwaukee-Mitchell
$582
Find similar
Air Canada
Dec 4
MKE10:54 amMilwaukee-Mitchell
16h 26m
3 stops
LIS9:20 amLisbon Humberto Delgado
Dec 11
LIS10:55 amLisbon Humberto Delgado
17h 35m
3 stops
MKE10:30 pmMilwaukee-Mitchell
$618
Find similar
Air Canada
Jan 8
MKE11:30 amMilwaukee-Mitchell
15h 50m
3 stops
LIS9:20 amLisbon Humberto Delgado
Jan 15
LIS11:20 amLisbon Humberto Delgado
16h 39m
3 stops
MKE9:59 pmMilwaukee-Mitchell
$1,154
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Milwaukee to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 21, 2025.
Use the filters below to find and compare flights from Milwaukee to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Thu 1/8

5:00 am-8:10 am

2 stops21h 10m

Lisbon Humberto Delgado

Thu 1/15

11:20 am-3:43 pm

2 stops34h 23m

$487

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 1/30

11:29 am-8:10 am

1 stop14h 41m

Lisbon Humberto Delgado

Fri 2/6

6:10 am-9:59 pm

2 stops21h 49m

$489

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Fri 1/30

10:13 am-10:30 am

2 stops18h 17m

Porto

Tue 2/3

6:05 am-7:58 pm

2 stops19h 53m

$492

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 1/30

11:29 am-8:10 am

1 stop14h 41m

Lisbon Humberto Delgado

Tue 2/3

5:00 am-3:43 pm

2 stops16h 43m

$493

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 1/30

11:30 am-8:10 am

2 stops14h 40m

Lisbon Humberto Delgado

Fri 2/6

10:55 am-8:48 pm

2 stops39h 53m

$494

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 1/30

7:02 am-8:00 am

1 stop18h 58m

Lisbon Humberto Delgado

Fri 2/6

10:00 am-8:58 pm

1 stop16h 58m

$506

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Thu 12/4

12:04 pm-9:20 am

2 stops15h 16m

Lisbon Humberto Delgado

Thu 12/11

10:55 am-1:44 pm

2 stops32h 49m

$582

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Thu 12/4

7:05 am-8:55 am

1 stop19h 50m

Lisbon Humberto Delgado

Thu 12/11

5:00 am-4:07 pm

2 stops17h 07m

$589

MilwaukeeLisbon

MKE - LIS

MKELIS

Milwaukee-Mitchell

Fri 3/6

7:02 am-9:00 am

1 stop19h 58m

Lisbon Humberto Delgado

Fri 3/13

5:00 am-7:01 pm

2 stops19h 01m

$596

MilwaukeePorto

MKE - OPO

MKEOPO

Milwaukee-Mitchell

Fri 5/15

3:13 pm-8:00 pm

2 stops22h 47m

Porto

Tue 5/26

8:20 am-9:27 pm

2 stops19h 07m

$1,354

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Portugal from

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

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 $742, 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 $830.

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.

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from Milwaukee when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $1,146 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Milwaukee for as low as $734 on momondo.

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

Direct flights

None
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?

  • 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 AirlinesPriceFrom $555Free CancellationRating
7.4
9,030 reviews
Search United Airlines flights
KLMPriceFrom $670Free CancellationRating
7.7
1,416 reviews
Search KLM flights
DeltaPriceFrom $699Free CancellationRating
7.9
8,002 reviews
Search Delta flights
American AirlinesPriceFrom $778Free CancellationRating
7.2
11,047 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
Sun 12/21
Sun 12/28
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo
Flights to Lisbonfrom $361
Flights to Portofrom $350
Flights to Funchalfrom $413
Flights to Farofrom $425
Flights to Ponta Delgadafrom $403
Flights to Lajesfrom $506
Flights to Hortafrom $577
Flights to Pico Islandfrom $566
Flights to Porto Santofrom $757
Flights to Velasfrom $566