Open interactive map →Cheap flights from Porto to Bilbao
Fares on the Porto to Bilbao route vary noticeably by season and demand. Right now the lowest available price is €17. Non-stop flights are available, making it a convenient option if you want to skip layovers. Booking further in advance typically unlocks lower prices, especially around school holidays and peak travel months. The calendar below maps out the cheapest and most expensive months so you can plan before committing to dates.
The cheapest fares on popular routes like this tend to sell out first, so it pays to book early once you spot a good price. Early-morning and late-night departures from Porto are often priced lower than midday flights. SkyHopp refreshes fares regularly - if the current price doesn't fit your budget, check back in a few days as availability changes.
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Cheapest month to fly
- October 2026€17DirectCheapest
Based on tracked fares, October is the cheapest month to fly this route at around €17.
Prices last updated: September 2026
October in Bilbao
Avg 18°C~15 rainy days
Historical averages from Open-Meteo. Shown for the cheapest travel month.
Entry requirements for Spain
EU passportFree movement (EU/Schengen)
US passportVisa-free, 90 days
Requirements vary by nationality and change without notice. Check requirements for your nationality →
About Bilbao
The Basque city that put itself on the global cultural map with the titanium-clad Guggenheim Museum, Bilbao has also become one of Spain's leading food destinations - the pintxos bars of the Casco Viejo are among the most rewarding eating experiences in Europe. Bilbao Airport (BIO) connects to European hubs, and San Sebastian is an hour's drive east.
Alternative routes
Other ways to reach Bilbao
Frequently asked questions
How much does a flight from Porto to Bilbao cost?
The cheapest fare currently available from Porto to Bilbao is €17. Prices on this route vary by season, day of week, and how far in advance you book. The month-by-month price calendar on this page shows exactly when fares are highest and lowest, so you can pick the most cost-effective window before searching for specific dates. Fares are refreshed regularly as our flight partners publish new availability.
Are there direct flights from Porto to Bilbao?
Yes - non-stop flights are currently available from Porto to Bilbao. The cheapest direct fare starts at €17, making it a convenient option if you want to avoid layover time. Direct flights are generally quicker and less stressful, especially for shorter trips to Spain. Click through to the booking site to check live availability and schedules for your dates.
When is the cheapest time to fly from Porto to Bilbao?
Prices on this route typically dip during shoulder-season months, away from school holidays and public holiday windows. Mid-week departures - particularly Tuesday to Thursday - tend to be cheaper than flights on Fridays and Sundays from Porto. The month-by-month price calendar above is the fastest way to identify the cheapest window - look for the months with the lowest fares before committing to travel dates. Booking 3-6 weeks in advance generally offers the best balance of price and seat availability on this route.