MSN - OPO

$727 Find Cheap Flights from Madison to Porto

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Madison to Porto departing on 3/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Madison to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Madison to Porto, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Madison to Porto (MSN-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Madison to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Madison to Porto

Fri, Mar 27 - Tue, Mar 31
United Airlines Logo
12:37 pm - 9:30 amMSN-OPO
15h 53m2 stops
United Airlines Logo
6:00 am - 8:54 pmOPO-MSN
20h 54m2 stops
$727United Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
United Airlines Logo
2:40 pm - 9:30 amMSN-OPO
13h 50m2 stops
United Airlines Logo
12:35 pm - 7:56 pmOPO-MSN
13h 21m1 stop
$875United Airlines
Find Deal

Everything you should know

Cheapest round-trip
$727
United Airlines
Fri 3/27Tue 3/31
MSN - OPO • 2 stops
Cheapest one-way
Multiple Airlines
Mon 11/3
MSN - OPO • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Porto!
Booking Insights

KAYAK's insights & trends for Madison to Porto flights

Get data-powered insights and trends into flights from Madison to Porto to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly non-stop between Madison and Porto?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Madison to Porto.

There are 2 airlines that fly nonstop from Madison to Porto. They are Delta and KLM. The cheapest airline for this route is KLM, with the best round-trip deal found costing $700. On average, the best prices for this route can be found at Delta.

Good to know

Cheapest flight$727
Flight from Madison to Porto

When to book flights from Madison to Porto

Are your dates flexible? Find out the best times to travel from Madison to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Madison to Porto

  • What is the cheapest flight from Madison to Porto?

    In the last 3 days, the lowest price for a flight from Madison to Porto was $727 for a round-trip ticket.

  • Do I need a passport to fly between Madison and Porto?

    Yes

  • Which airports will I be using when flying from Madison to Porto?

    When flying out of Madison you will be using Madison Truax Field. You will be landing at Porto, also known as Porto.

  • Which aircraft models fly most regularly from Madison to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Madison to Porto?

    SkyTeam is the only airline alliance operating flights between Madison and Porto.

  • Which is the best airline for flights from Madison to Porto, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Madison to Porto are Delta and KLM. With an average price for the route of $842 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $846 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from Madison to Porto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Madison to Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Madison to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Madison is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Madison to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Madison with another airline. Booking your flights between Madison and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Madison to Porto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Madison up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Madison to Porto

 
See real verified KAYAK customer reviews for airlines flying from Madison to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Madison to Porto? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8001 reviews
7.9Comfort
8.5Crew
7.9Entertainment
7.3Food
8.2Boarding
Airline reviews

I truly love flying with Delta. They have always treated me with the upmost respect

10.0 ExcellentMAYRA, Nov 2025JFK - MIA
Read more Delta reviews

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Old plane and old configuration/seats but still comfortable for a morning flight

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

The service was great. However the lounge only gets passing grade

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Everything you need to know for your flight from Madison to Porto

Information on your arrival and departure airports

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