Cheap flights from Porto to Karlsruhe

One-way fares from €29 · OPO → FKB · prices found by travellers in the last 48 hours

Cheapest fare
€29

Ryanair · Sat, 12 Dec

Cheapest month
December

from €29

Direct flights
Yes

Ryanair

Flight time
2h 40m

1,590 km

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Cheapest month to fly from Porto to Karlsruhe

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

  1. November 2026 €56
  2. December 2026 Cheapest €29

Cheapest dates in December 2026

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

Ryanair
Depart16:20 Sat, 12 DecOPO → FKB 2h 40m · Direct
€29one way, per person
View deal
Ryanair
Depart09:50 Fri, 11 DecOPO → FKB 2h 40m · Direct
€53one way, per person
View deal
Ryanair
Depart16:20 Sat, 5 DecOPO → FKB 2h 40m · Direct
€105one way, per person
View deal
Ryanair
Depart07:05 Wed, 2 DecOPO → FKB 3h 50m · 1 stop
€116one way, per person
View deal
Ryanair
Depart15:20 Thu, 3 DecOPO → FKB 3h 50m · 1 stop
€123one way, per person
View deal
Ryanair
Depart14:00 Fri, 4 DecOPO → FKB 3h 50m · 1 stop
€128one way, per person
View deal
See every date in December 2026 →

Plan the rest of your trip to Karlsruhe

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

About flights from Porto to Karlsruhe

Porto (OPO) and Karlsruhe (FKB) are about 1,590 km apart. Direct flights take around 2h 40m, and recent direct fares were with Ryanair. Over the next few months, one-way fares start from €29, and December 2026 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 Porto to Karlsruhe?

The cheapest one-way fare we've seen recently is €29 with Ryanair, departing Saturday, 12 December 2026. Over the coming months, the lowest fare in each month ranges from €29 to €56.

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

December 2026 currently has the lowest fares, from €29 one way.

Are there direct flights from Porto to Karlsruhe?

Yes. Recent direct fares were with Ryanair.

How long is the flight from Porto to Karlsruhe?

A direct flight takes about 2h 40m. Porto and Karlsruhe are around 1,590 km apart.

Which airlines fly from Porto to Karlsruhe?

Recent fares on this route were with Ryanair.

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