$716+ Cheap flights from Milwaukee (MKE) to Porto (OPO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — OPO
Nov 26 — Dec 31
Round-trip
1 adult, Economy
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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
Cheapest
Best
Last-minute
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 October 27, 2026.
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 October 27, 2026.
This KLM deal was found by Cheapflights users on 10/22. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:45 am -
1 stop18h 30m
Thu 12/1011:15 am -
2 stops18h 44m
Deal found 10/22![KLM logo]()
$766
This Expedia deal was found by Cheapflights users on 10/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:51 pm -
2 stops14h 54m
Thu 12/108:20 am -
2 stops16h 23m
Deal found 10/22![Iberia logo]()
$769
This Air France deal was found by Cheapflights users on 10/22. 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.
Wed 12/27:45 am -
1 stop18h 30m
Thu 12/1010:15 am -
1 stop16h 37m
Deal found 10/22![Air France logo]()
$774
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Thu 11/196:00 am -
1 stop21h 30m
Thu 11/266:00 am -
2 stops22h 50m
Deal found 10/22![United Airlines logo]()
$815
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Mon 12/710:55 am -
1 stop16h 35m
Fri 12/116:00 am -
2 stops17h 18m
Deal found 10/22![United Airlines logo]()
$1,084
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Sat 11/216:28 pm -
2 stops33h 02m
Sat 11/2812:30 pm -
2 stops38h 20m
Deal found 10/24![United Airlines logo]()
$1,349
This Gurufare deal was found by Cheapflights users on 10/24. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:03 pm -
1 stop32h 27m
Sat 11/284:10 pm -
2 stops34h 40m
Deal found 10/24![Lufthansa logo]()
$1,499
Best flights from Milwaukee to PortoDiscover carefully curated flight deals from Milwaukee to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
Discover carefully curated flight deals from Milwaukee to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
This Air France deal was found by Cheapflights users on 10/25. 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.
Wed 3/31:00 pm -
2 stops15h 35m
Wed 3/105:00 am -
2 stops18h 45m
Deal found 10/25![Multiple Airlines logo]()
$716
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Wed 3/311:40 am -
1 stop15h 50m
Wed 3/106:00 am -
2 stops33h 49m
Deal found 10/25![United Airlines logo]()
$722
This Delta deal was found by Cheapflights users on 10/22. 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.
Wed 1/67:00 am -
2 stops21h 35m
Tue 1/195:00 am -
2 stops17h 07m
Deal found 10/22![Delta logo]()
$764
This KLM deal was found by Cheapflights users on 10/22. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:45 am -
1 stop18h 30m
Thu 12/1011:15 am -
2 stops18h 44m
Deal found 10/22![KLM logo]()
$766
This American Airlines deal was found by Cheapflights users on 10/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/612:35 pm -
2 stops17h 10m
Tue 1/198:20 am -
3 stops20h 16m
Deal found 10/25![American Airlines logo]()
$1,048
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Thu 11/196:00 am -
1 stop21h 30m
Thu 11/266:00 am -
2 stops22h 50m
Deal found 10/22![United Airlines logo]()
$815
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Mon 12/710:55 am -
1 stop16h 35m
Fri 12/116:00 am -
2 stops17h 18m
Deal found 10/22![United Airlines logo]()
$1,084
Last-minute flights from Milwaukee to PortoDiscover last-minute flight deals from Milwaukee to Porto. Data last updated October 27, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Porto. Data last updated October 27, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Thu 11/196:00 am -
1 stop21h 30m
Thu 11/266:00 am -
2 stops22h 50m
Deal found 10/22![United Airlines logo]()
$815
This Mytrip deal was found by Cheapflights users on 10/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:23 pm -
3 stops19h 52m
Thu 11/267:50 pm -
3 stops27h 36m
Deal found 10/22![Multiple Airlines logo]()
$2,719
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Sat 11/216:28 pm -
2 stops33h 02m
Sat 11/2812:30 pm -
2 stops38h 20m
Deal found 10/24![United Airlines logo]()
$1,349
This Gurufare deal was found by Cheapflights users on 10/24. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:03 pm -
1 stop32h 27m
Sat 11/284:10 pm -
2 stops34h 40m
Deal found 10/24![Lufthansa logo]()
$1,499
This Ovago deal was found by Cheapflights users on 10/24. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:10 am -
1 stop21h 20m
Sat 11/2812:35 pm -
1 stop16h 15m
Deal found 10/24![Brussels Airlines logo]()
$2,078
Find 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 October 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $716 (Air France) |
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 7,457,451 searches. Data last updated October 27, 2026.
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
Cheapest round-trip
MilwaukeePorto
MKE Milwaukee-Mitchell - OPO Porto
MKEOPO
Milwaukee-Mitchell
Wed 3/3
1:00 pm-10:35 am
2 stops15h 35m
Porto
Wed 3/10
5:00 am-5:45 pm
2 stops18h 45m
$716
MilwaukeePorto
MKE Milwaukee-Mitchell - OPO Porto
MKEOPO
Milwaukee-Mitchell
Wed 3/3
11:40 am-9:30 am
1 stop15h 50m
Porto
Wed 3/10
6:00 am-9:49 am
2 stops33h 49m
$722
MilwaukeePorto
MKE Milwaukee-Mitchell - OPO Porto
MKEOPO
Milwaukee-Mitchell
Wed 1/6
7:00 am-10:35 am
2 stops21h 35m
Porto
Tue 1/19
5:00 am-4:07 pm
2 stops17h 07m
$764
MilwaukeePorto
MKE Milwaukee-Mitchell - OPO Porto
MKEOPO
Milwaukee-Mitchell
Wed 12/2
7:45 am-8:15 am
1 stop18h 30m
Porto
Thu 12/10
11:15 am-11:59 pm
2 stops18h 44m
$766
MilwaukeePorto
MKE Milwaukee-Mitchell - OPO Porto
MKEOPO
Milwaukee-Mitchell
Thu 11/19
6:00 am-9:30 am
1 stop21h 30m
Porto
Thu 11/26
6:00 am-10:50 pm
2 stops22h 50m
$815
MilwaukeePorto
MKE Milwaukee-Mitchell - OPO Porto
MKEOPO
Milwaukee-Mitchell
Wed 1/6
12:35 pm-11:45 am
2 stops17h 10m
Porto
Tue 1/19
8:20 am-10:36 pm
3 stops20h 16m
$1,048
Quickest round-trip
MilwaukeePorto
MKE Milwaukee-Mitchell - OPO Porto
MKEOPO
Milwaukee-Mitchell
Mon 12/7
10:55 am-9:30 am
1 stop16h 35m
Porto
Fri 12/11
6:00 am-5:18 pm
2 stops17h 18m
$1,084
Sorted by cheapest first
Compare providers for flights from Milwaukee to Porto
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Milwaukee to Porto in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Milwaukee-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Milwaukee-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Milwaukee-Porto flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Milwaukee-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Milwaukee-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
MKE-OPO
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Related info for your journey
Find useful and relevant information for your journey from Milwaukee to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsVila Nova de Gaia
Arcos de Valdevez
Coimbra
Aveiro
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