MSN - OPO

$461 Find Cheap Flights from Madison to Porto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Madison to Porto departing on 11/20. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$723
Air France, KLM
Tue 10/27Tue 11/3
MSN - OPO • 2 stops
Cheapest one-way
$461
United Airlines
Fri 11/20
MSN - OPO • 2 stops
Top airlines
Cheapest • from $745 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Madison and Porto. You'll need at least 2 connections.
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We hope you love your trip to Porto!
Flight Deals
Booking Insights
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

Tue, Oct 27 - Tue, Nov 3
Multiple Airlines Logo
1:45 pm - 10:35 am
MSN
-
OPO
15h 50m
2 stops
Multiple Airlines Logo
9:55 am - 8:45 pm
OPO
-
MSN
16h 50m
2 stops
$723Multiple Airlines
Sun, Dec 6 - Tue, Dec 8
United Airlines Logo
8:00 am - 9:30 am
MSN
-
OPO
19h 30m
1 stop
United Airlines Logo
12:35 pm - 10:50 pm
OPO
-
MSN
16h 15m
2 stops
$745United Airlines
Tue, Oct 27 - Tue, Nov 3
United Airlines Logo
8:00 am - 9:30 am
MSN
-
OPO
20h 30m
1 stop
United Airlines Logo
6:00 am - 12:12 am
OPO
-
MSN
24h 12m
2 stops
$746United Airlines
Sun, Dec 6 - Tue, Dec 8
United Airlines Logo
6:45 am - 9:30 am
MSN
-
OPO
20h 45m
2 stops
United Airlines Logo
12:35 pm - 12:12 am
OPO
-
MSN
17h 37m
2 stops
$750United Airlines
Sun, Dec 6 - Tue, Dec 8
United Airlines Logo
8:00 am - 9:30 am
MSN
-
OPO
19h 30m
1 stop
United Airlines Logo
12:35 pm - 7:56 pm
OPO
-
MSN
13h 21m
1 stop
$754United Airlines
Sun, Dec 6 - Tue, Dec 8
United Airlines Logo
8:00 am - 9:30 am
MSN
-
OPO
19h 30m
1 stop
United Airlines Logo
12:35 pm - 7:56 pm
OPO
-
MSN
13h 21m
1 stop
$755United Airlines
Tue, Oct 27 - Tue, Nov 3
Lufthansa Logo
8:00 am - 9:30 am
MSN
-
OPO
20h 30m
1 stop
Lufthansa Logo
12:35 pm - 7:56 pm
OPO
-
MSN
13h 21m
1 stop
$880Lufthansa
Tue, Jul 14 - Tue, Jul 21
United Airlines Logo
10:45 am - 6:15 am
MSN
-
OPO
13h 30m
1 stop
United Airlines Logo
12:15 pm - 11:49 am
OPO
-
MSN
29h 34m
2 stops
$926United Airlines
Tue, Jul 14 - Tue, Jul 21
Delta Logo
2:45 pm - 3:25 pm
MSN
-
OPO
18h 40m
2 stops
Delta Logo
5:00 am - 5:59 pm
OPO
-
MSN
18h 59m
2 stops
$931Delta
Tue, Jul 14 - Tue, Jul 21
United Airlines Logo
10:45 am - 6:15 am
MSN
-
OPO
13h 30m
1 stop
United Airlines Logo
12:35 pm - 8:39 pm
OPO
-
MSN
14h 04m
1 stop
$1,037United Airlines
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 provide the cheapest flights from Madison to Porto?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Madison to Porto were found on United Airlines ($745) and Lufthansa ($880).

Good to know

Cheapest flight$461
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 5 days, the lowest price for a flight from Madison to Porto was $461 for a one-way ticket and $723 for a round-trip.

  • 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, KLM or Delta?

    The two airlines most popular with KAYAK users for flights from Madison to Porto are KLM and Delta. With an average price for the route of $846 and an overall rating of 7.8, KLM is the most popular choice. Delta is also a great choice for the route, with an average price of $842 and an overall rating of 7.8.

  • 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.
7.8
KLMOverall score based on 1530 reviews
7.7Comfort
8.4Crew
7.3Food
7.8Boarding
7.2Entertainment
Airline reviews

As always, it’s a pleasure to travel with KLM. It is one of my favorite airlines.

10.0 ExcellentGeorge, May 2026
OTP - AMS
Read more KLM reviews

As always, it’s a pleasure to travel with KLM. It is one of my favorite airlines.

Brand new plane lots of room the snack was very flavourful and enjoyable

It was really nice journey i personally recommend klm flight

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Flight was on time, staff are friendly and helpful onboard.

Terrible last row seats many seats available but no offer to move to better seat

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

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

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

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

Information on your arrival and departure airports