HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$507+ Cheap flights from Madison (MSN) 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
MSN — OPO
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Madison 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 Madison to Porto

Cheapest flights from Madison to Porto
Explore the most affordable flight options available from Madison to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This United Airlines deal was found by Cheapflights users on 1/25. 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 3/410:49 am
MSN
-
OPO
2 stops18h 51m
United Airlines
Sun 3/86:00 am
OPO
-
MSN
2 stops21h 32m
United Airlines
Deal found 1/25$507
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Sat 7/46:45 am
MSN
-
OPO
2 stops18h 10m
United Airlines
Sat 7/1812:05 pm
OPO
-
MSN
2 stops38h 49m
United Airlines
Deal found 1/25$1,146
This FlightHub deal was found by Cheapflights users on 1/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/41:04 pm
MSN
-
OPO
2 stops35h 46m
Multiple Airlines
Sat 7/186:00 am
OPO
-
MSN
2 stops20h 54m
Multiple Airlines
Deal found 1/27$1,169
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 3/137:25 pm
MSN
-
OPO
2 stops35h 15m
United Airlines
Fri 3/206:00 am
OPO
-
MSN
2 stops37h 57m
United Airlines
Deal found 1/27$1,207
This KAYAK deal was found by Cheapflights users on 1/27. 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.
Sat 7/41:04 pm
MSN
-
OPO
2 stops15h 16m
Lufthansa
Sat 7/189:00 am
OPO
-
MSN
1 stop16h 56m
Lufthansa
Deal found 1/27$1,271

Find flight deals from Madison to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Madison (MSN) 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 January 27, 2026.

Round-trip from

$507
(United Airlines)
From Madison Truax Field to Porto
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Madison 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 January 27, 2026.
Use the filters below to find and compare flights from Madison to Porto that are best for you.

Fly from

Madison

Fly to

Porto

Route

Depart

Return

Price

MadisonPorto

MSN - OPO

MSNOPO

Madison Truax Field

Wed 3/4

2:48 pm-2:45 pm

2 stops41h 57m

Porto

Sun 3/8

12:30 pm-10:12 am

2 stops26h 42m

$507

MadisonPorto

MSN - OPO

MSNOPO

Madison Truax Field

Sat 7/4

6:45 am-6:55 am

2 stops18h 10m

Porto

Sat 7/18

12:05 pm-8:54 pm

2 stops38h 49m

$1,146

MadisonPorto

MSN - OPO

MSNOPO

Madison Truax Field

Sat 7/4

1:04 pm-10:20 am

2 stops15h 16m

Porto

Sat 7/18

9:00 am-7:56 pm

1 stop16h 56m

$1,271

MadisonPorto

MSN - OPO

MSNOPO

Madison Truax Field

Fri 3/13

3:54 pm-2:45 pm

2 stops17h 51m

Porto

Fri 3/20

12:45 pm-10:37 pm

1 stop14h 52m

$1,483

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Best time to book a flight from Madison to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Madison with our price prediction graph.
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.

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 January 27, 2026.
See what other customers who have flown with Delta and KLM from Madison to Porto have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,119 reviews

Boarding

8.1

Comfort

7.9

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,119 reviews
Delta
7.9
Good
8,119 reviews

Boarding

8.1

Comfort

7.9

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
KLM
7.7
Good
1,443 reviews
Delta
7.9
Good
8,119 reviews

Boarding

8.1

Comfort

7.9

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Madison to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Madison to Porto?

    For as low as $507, United Airlines can have you in Porto from Madison in 18h 51m. The distance between Madison and Porto is about 3958 mi.

  • What are the cheapest airlines flying from Madison to Porto round-trip?

    According to our current data, KLM ($700), and Delta ($711) offers the cheapest pricing from Madison to Porto.

  • Can I find deals for flights from Madison to Porto that include hotel bookings?

    Yes. In addition to deals on Madison to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Madison to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Madison to Porto.

  • Can I find deals for business class flights from Madison to Porto?

    Yes. Cheapflights offers flight deals from Madison to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Aveiro
Arcos de Valdevez
Coimbra

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Madison to Porto

Discover the top 2 airlines that operate flights from Madison to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$700Average$846FlexibilityNo cancel feeOn-time75%
DeltaCheapest$711Average$842FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.