Cheap flights from Klagenfurt to Porto

One-way fares from € 198 · KLU → OPO · prices found by travellers in the last 48 hours

Compare all dates Porto → Klagenfurt
Cheapest fare
€ 198

SkyAlps · Thu, 15 Apr

Cheapest month
April

from € 198

Direct flights
Not recently

Usually 1+ stop

Quickest trip
4h 40m

1,930 km

Get a price alert

We'll email you when Klagenfurt → Porto drops to your price. It's free, and you can stop any time.

Today's cheapest fare is € 198. We'll send one email to confirm. See our privacy policy.

Cheapest month to fly from Klagenfurt to Porto

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 € 287
  2. March 2027 € 216
  3. April 2027 Cheapest € 198
  4. May 2027 € 219

Cheapest dates in April 2027

The lowest fares we've seen for each day, cheapest first.

SkyAlps
Depart12:10 Thu, 15 AprKLU → OPO 4h 45m · 1 stop
€ 198one way, per person
View deal
See every date in April 2027 →

Plan the rest of your trip to Porto

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in PortoCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in PortoTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in PortoPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in PortoCompare rental cars from major brands on EconomyBookings Compare cars →

Stay connected

eSIM for PortugalMobile data from the moment you land, by Airalo Get eSIM →

About flights from Klagenfurt to Porto

Klagenfurt (KLU) and Porto (OPO) are about 1,930 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 4h 40m. Over the next few months, one-way fares start from € 198, and April 2027 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Klagenfurt to Porto?

The cheapest one-way fare we've seen recently is € 198 with SkyAlps, departing Thursday, 15 April 2027. Over the coming months, the lowest fare in each month ranges from € 198 to € 287.

What is the cheapest month to fly from Klagenfurt to Porto?

April 2027 currently has the lowest fares, from € 198 one way.

Are there direct flights from Klagenfurt to Porto?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Klagenfurt to Porto?

The quickest journey we've seen takes about 4h 40m. Klagenfurt and Porto are around 1,930 km apart.

Which airlines fly from Klagenfurt to Porto?

Recent fares on this route were with SkyAlps and Austrian Airlines.

More cheap flights from Klagenfurt

Compare flights to Porto from other cities →