$628+ Cheap flights from Milwaukee (MKE) to Porto (OPO)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Milwaukee to Porto with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Milwaukee to Porto
Discover tips and strategies to find the most affordable flight options for your journey from Milwaukee (MKE) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.
Round-trip from | $729 (United Airlines) |
|---|---|
One-way from | $628 (FlightHub) |
Find flight deals from Milwaukee to Porto
Cheapest flights from Milwaukee to PortoExplore the most affordable flight options available from Milwaukee to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from Milwaukee to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Lufthansa deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KAYAK deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air France deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Milwaukee to Porto 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Milwaukee to Porto that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
MilwaukeePorto
MKE - OPO
MKEOPO
Milwaukee-Mitchell
Wed 8/13
11:48 am-6:05 am
1 stop12h 17m
Porto
Tue 8/26
12:50 pm-10:58 am
2 stops28h 08m
MilwaukeePorto
MKE - OPO
MKEOPO
Milwaukee-Mitchell
Tue 8/12
5:31 pm-9:20 am
2 stops33h 49m
Porto
Tue 8/26
12:50 pm-4:56 pm
2 stops34h 06m
MilwaukeePorto
MKE - OPO
MKEOPO
Milwaukee-Mitchell
Tue 8/12
5:31 pm-11:20 pm
2 stops23h 49m
Porto
Fri 8/29
6:00 am-4:56 pm
2 stops16h 56m
MilwaukeePorto
MKE - OPO
MKEOPO
Milwaukee-Mitchell
Sun 8/17
9:38 am-9:35 pm
2 stops29h 57m
Porto
Mon 9/1
4:20 pm-4:25 pm
2 stops30h 05m
MilwaukeePorto
MKE - OPO
MKEOPO
Milwaukee-Mitchell
Thu 8/14
1:06 pm-11:40 am
2 stops16h 34m
Porto
Sat 8/30
8:15 am-8:00 pm
2 stops17h 45m
MilwaukeePorto
MKE - OPO
MKEOPO
Milwaukee-Mitchell
Sat 8/9
5:30 pm-3:30 pm
2 stops16h 00m
Porto
Mon 8/25
11:30 am-11:36 pm
2 stops18h 06m
MilwaukeePorto
MKE - OPO
MKEOPO
Milwaukee-Mitchell
Wed 8/20
12:05 pm-9:20 am
2 stops15h 15m
MilwaukeePorto
MKE - OPO
MKEOPO
Milwaukee-Mitchell
Fri 9/19
11:39 am-6:50 am
1 stop13h 11m
Best time to book a flight from Milwaukee to Porto
Have a flexible travel schedule? Discover the best time to fly to Porto from Milwaukee with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Milwaukee to Porto
What is the cheapest month to book a flight from Milwaukee to Porto?
Currently, January is the cheapest month in which you can book a flight from Milwaukee to Porto (average of $523). Flying from Milwaukee to Porto in June is currently the most expensive (average of $1,047). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Rainfall in Porto by month
Plan your trip to Porto by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.
Temperature in Porto by month
Plan your trip to Porto by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).
Reviews of airlines servicing Porto
Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated June 12, 2025.
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC