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$770+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
MSN — OPO
Apr 29 — May 61
Wed 4/29
Wed 5/6
1 adult, Economy
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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 March 30, 2026.

This United Airlines deal was found by Cheapflights users on 3/29. 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.
Sun 12/65:30 pm
MSN
-
OPO
2 stops36h 10m
United Airlines
Wed 12/96:00 am
OPO
-
MSN
2 stops20h 54m
United Airlines
Deal found 3/29$770
This KLM deal was found by Cheapflights users on 3/25. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:29 pm
MSN
-
OPO
2 stops17h 41m
KLM
Sat 5/165:00 am
OPO
-
MSN
2 stops18h 49m
KLM
Deal found 3/25$947
This United Airlines deal was found by Cheapflights users on 3/28. 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 9/38:30 pm
MSN
-
OPO
2 stops28h 40m
United Airlines
Wed 9/92:25 pm
OPO
-
MSN
2 stops25h 19m
United Airlines
Deal found 3/28$1,039
This Air France deal was found by Cheapflights users on 3/25. 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.
Thu 9/34:25 pm
MSN
-
OPO
2 stops17h 00m
Multiple Airlines
Wed 9/95:00 am
OPO
-
MSN
2 stops17h 36m
Multiple Airlines
Deal found 3/25$1,040
This United Airlines deal was found by Cheapflights users on 3/25. 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 5/96:30 am
MSN
-
OPO
2 stops27h 15m
United Airlines
Sat 5/1612:35 pm
OPO
-
MSN
1 stop14h 10m
United Airlines
Deal found 3/25$1,091
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 7/47:17 pm
MSN
-
OPO
2 stops29h 33m
United Airlines
Sat 7/1810:15 am
OPO
-
MSN
2 stops42h 44m
United Airlines
Deal found 3/27$1,181
This United Airlines deal was found by Cheapflights users on 3/29. 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 7/1710:40 am
MSN
-
OPO
2 stops14h 15m
United Airlines
Sun 7/2612:15 pm
OPO
-
MSN
2 stops39h 02m
United Airlines
Deal found 3/29$1,200
This Air France deal was found by Cheapflights users on 3/29. 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.
Sat 6/66:20 pm
MSN
-
OPO
2 stops17h 50m
Multiple Airlines
Sun 6/219:25 am
OPO
-
MSN
2 stops19h 18m
Multiple Airlines
Deal found 3/29$1,311

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 March 30, 2026.

Round-trip from

$947
(KLM)
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 March 30, 2026.
Use the filters below to find and compare flights from Madison to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MadisonPorto

MSN - OPO

MSNOPO

Madison Truax Field

Thu 9/3

8:30 pm-7:10 am

2 stops28h 40m

Porto

Wed 9/9

2:25 pm-9:44 am

2 stops25h 19m

$1,039
Quickest round-trip

MadisonPorto

MSN - OPO

MSNOPO

Madison Truax Field

Thu 9/3

4:25 pm-3:25 pm

2 stops17h 00m

Porto

Wed 9/9

5:00 am-4:36 pm

2 stops17h 36m

$1,040

MadisonPorto

MSN - OPO

MSNOPO

Madison Truax Field

Sat 5/9

6:30 am-3:45 pm

2 stops27h 15m

Porto

Sat 5/16

12:35 pm-8:45 pm

1 stop14h 10m

$1,091

MadisonPorto

MSN - OPO

MSNOPO

Madison Truax Field

Sat 7/4

7:17 pm-6:50 am

2 stops29h 33m

Porto

Sat 7/18

10:15 am-10:59 pm

2 stops42h 44m

$1,181

MadisonPorto

MSN - OPO

MSNOPO

Madison Truax Field

Fri 7/17

10:40 am-6:55 am

2 stops14h 15m

Porto

Sun 7/26

12:15 pm-9:17 pm

2 stops39h 02m

$1,200

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/28

Sorted by cheapest first

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 March 30, 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
8,359 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Food

7.2

Boarding

8.1

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
8,359 reviews
Delta
7.9
Good
8,359 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Food

7.2

Boarding

8.1

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
7.8
Good
1,480 reviews
Delta
7.9
Good
8,359 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Food

7.2

Boarding

8.1

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 $947, KLM can have you in Porto from Madison in 17h 41m. The distance between Madison and Porto is about 3958 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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

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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 March 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$700Average$846FlexibilityNo cancel feeOn-time75%
DeltaCheapest$711Average$842FlexibilityNo cancel feeOn-timeN/A

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