Cheap flights from Porto to Bilbao from $23 OPO → BIO

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $43 to $118.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

No. We hold 3-night return fares on 1 other departure date within 3 days of 17 Dec, and it is not cheaper.

Every date we hold

13 fares on 10 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $47.

Found recently, and the cheapest we hold

What have prices looked like?

Over 46 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $18 to $30.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 24 Dec to compare.

Every date we hold

7 fares on 7 departure dates

Which month looks cheapest?

February 2027 is the cheapest month — from $18.

Return

Fares 60 to 89 days before departure were typically 46% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

The cheapest fares were 60 to 89 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (46 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from Porto to Bilbao?

The cheapest return found recently is $55 with Volotea, 17 Dec to 20 Dec, found 2 days ago. The cheapest return we hold, of any age, is $47 with Vueling, 17 Dec to 20 Dec, found 6 days ago. The cheapest return fare on each of 10 departure dates is usually $78 to $131.

How much is a one-way flight from Porto to Bilbao?

The cheapest one-way found recently is $23 with Vueling, 24 Dec, found 2 days ago. The cheapest one-way we hold, of any age, is $18 with Vueling, 27 Feb 2027, found 4 days ago. The cheapest one-way fare on each of 7 departure dates is usually $24 to $28.

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

December 2026 is the cheapest month for a return, from $47, 17 Dec to 20 Dec, found 6 days ago. February 2027 is the cheapest month for a one-way, from $18, 27 Feb 2027, found 4 days ago.

How far ahead should I book a flight from Porto to Bilbao?

In 49 days of prices between 24 Sept and 11 Nov, return fares 60 to 89 days before departure were typically 46% lower than 0 to 6 days before departure. In 46 days of prices between 24 Sept and 11 Nov, one-way fares were cheapest 60 to 89 days before departure.

Is there a direct flight from Porto to Bilbao?

Yes, the cheapest nonstop return found recently is $55 with Volotea, 17 Dec to 20 Dec, found 2 days ago. The cheapest nonstop one-way found recently is $23 with Vueling, 24 Dec, found 2 days ago.

How long is the flight from Porto to Bilbao?

The cheapest nonstop one-way found recently, with Vueling on 24 Dec, takes 1 h 15 min from Porto Airport (OPO) to Bilbao Airport (BIO).

Which airlines have the cheapest flights from Porto to Bilbao?

Between 13 Nov and 15 Feb 2027, Vueling has the cheapest return on 7 of the 10 departure dates we hold, Iberia on 1 and Volotea on 1. Between 26 Nov and 16 Jun 2027, Volotea has the cheapest one-way on 4 of the 7 departure dates we hold, and Vueling on 3.