$25 Cheap Flights from Bilbao (BIO) to Porto (OPO)

View $25 flight on Sat, Nov 22, 2025Opens in a new window

Popular airlines from Bilbao Airport (BIO) to Porto Airport (OPO)

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Cheap Flights from Bilbao to Porto (BIO-OPO)

Prices were available within the past 7 days and start at $25 for one-way flights and $102 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Vueling Airlines
Thu, Oct 2 - Thu, Oct 16
BIO
Bilbao
OPO
Porto
$102 Roundtrip, found 6 days ago
$102
Roundtrip
found 6 days ago
Select Vueling Airlines flight, departing Thu, Oct 2 from Bilbao to Porto, returning Thu, Oct 16, priced at $102 found 6 days ago
Volotea
Thu, Sep 25 - Thu, Oct 2
BIO
Bilbao
OPO
Porto
$107 Roundtrip, found 4 days ago
$107
Roundtrip
found 4 days ago
Select Volotea flight, departing Thu, Sep 25 from Bilbao to Porto, returning Thu, Oct 2, priced at $107 found 4 days ago
Volotea
Thu, Sep 25 - Thu, Oct 2
BIO
Bilbao
OPO
Porto
$113 Roundtrip, found 4 days ago
$113
Roundtrip
found 4 days ago
Select Volotea flight, departing Thu, Sep 25 from Bilbao to Porto, returning Thu, Oct 2, priced at $113 found 4 days ago
Volotea
Thu, Oct 2 - Thu, Oct 16
BIO
Bilbao
OPO
Porto
$115 Roundtrip, found 6 days ago
$115
Roundtrip
found 6 days ago
Select Volotea flight, departing Thu, Oct 2 from Bilbao to Porto, returning Thu, Oct 16, priced at $115 found 6 days ago
Volotea
Thu, Oct 2 - Thu, Oct 16
BIO
Bilbao
OPO
Porto
$116 Roundtrip, found 3 days ago
$116
Roundtrip
found 3 days ago
Select Volotea flight, departing Thu, Oct 2 from Bilbao to Porto, returning Thu, Oct 16, priced at $116 found 3 days ago
TAP Portugal
Thu, Nov 13 - Tue, Nov 25
BIO
Bilbao
OPO
Porto
$121 Roundtrip, found 6 days ago
$121
Roundtrip
found 6 days ago
Select TAP Portugal flight, departing Thu, Nov 13 from Bilbao to Porto, returning Tue, Nov 25, priced at $121 found 6 days ago
TAP Portugal
Tue, Sep 30 - Tue, Oct 14
BIO
Bilbao
OPO
Porto
$122 Roundtrip, found 3 days ago
$122
Roundtrip
found 3 days ago
Select TAP Portugal flight, departing Tue, Sep 30 from Bilbao to Porto, returning Tue, Oct 14, priced at $122 found 3 days ago
Iberia
Sat, Jan 24 - Sat, Jan 31
BIO
Bilbao
OPO
Porto
$123 Roundtrip, found 1 day ago
$123
Roundtrip
found 1 day ago
Select Iberia flight, departing Sat, Jan 24 from Bilbao to Porto, returning Sat, Jan 31, priced at $123 found 1 day ago
Volotea
Sun, Sep 28 - Thu, Oct 16
BIO
Bilbao
OPO
Porto
$125 Roundtrip, found 3 days ago
$125
Roundtrip
found 3 days ago
Select Volotea flight, departing Sun, Sep 28 from Bilbao to Porto, returning Thu, Oct 16, priced at $125 found 3 days ago
Air Europa
Sun, Sep 14 - Thu, Sep 25
BIO
Bilbao
OPO
Porto
$135 Roundtrip, found 3 days ago
$135
Roundtrip
found 3 days ago
Select Air Europa flight, departing Sun, Sep 14 from Bilbao to Porto, returning Thu, Sep 25, priced at $135 found 3 days ago

Find the cheapest month to fly from Bilbao (BIO) to Porto (OPO)

November is typically the cheapest month to fly

From $44 - $209 per traveler.

Graph displaying average flight prices per month

Alternative airports near Porto

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Dr. Francisco de Sa Carneiro OPO. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $212
OPO
Dr. Francisco de Sa Carneiro
CheapestClosest
Average driving time to city center14 min
Flights from $212
Flights from Bilbao (BIO) to Porto (OPO)
Origin airport
Bilbao
Destination airport
Dr. Francisco de Sa Carneiro
Airlines serving
Air Europa, Brussels Airlines, Iberia, Lufthansa, Swiss International Air Lines, TAP Portugal
Roundtrip price
$101
Distance
327 mi
Average flight time
1 hour 20 mins

Bilbao to Porto Flights

The cheapest times to fly from Bilbao to Porto

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Bilbao to Porto are during the month of October. You can find some of the cheapest flights from Bilbao to Porto with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Bilbao to Porto

Sunday is one of the best days to book for cheap flights from Bilbao to Porto: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Bilbao to Porto

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Bilbao to Porto in 2025. You can also book with separate airlines for your outbound and return journeys, from $25 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Bilbao to Porto flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Bilbao to Porto airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO) cost?
You can book cheap return fares starting at $105 from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Volotea flight leaving BIO on July 25 2025 and touching down at OPO. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from BIO to OPO?
The cheapest flights from BIO to OPO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Board a nonstop flight with Vueling and fly straight from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO).
What is the cheapest airline that flies from BIO to OPO?
Right now, the cheapest airline operating one-way flights from BIO to OPO is Volotea. You can book a seat on this route from $51. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BIO on October 2 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO)?
On average, Bilbao Airport (BIO) has 2 nonstop flights to Dr. Francisco de Sa Carneiro Airport (OPO) per week. For more options, take advantage of Expedia's filters to look for flights with one or two stops. Squeeze in a quick visit to another destination or simply break up your journey.
What are the most popular departure times for flights from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO)?
More travelers fly between BIO and OPO at 7 PM than at any other time. Prefer a quieter experience? Pick a flight outside the busiest times and you're likely to save on your ticket as well.
What day of the week has the most flights from BIO to OPO?
Thursday has the most flights from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO). Consider leaving on this day and you'll have a greater chance of finding a departure that fits your plans.
What is the earliest flight from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Take the earliest flight at around 7:00PM UTC+1, departing from Bilbao Airport (BIO). You'll be flying for approximately 1h 20m, reaching Dr. Francisco de Sa Carneiro Airport (OPO) at approximately 7:20PM UTC+0.
How long does it take to fly from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Flights from BIO to OPO have an average travel time of 1 hour and 20 minutes. The total distance between these two airports is 330 mi.
What airline has the least delays from BIO to OPO?
Volotea has the best performance for on-time direct flights from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO), with an on-time score of 87%. Use the Expedia App to view your flight status before you leave and get immediate updates about any changes.
What is the best time to fly from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO)?
To avoid possible delays on the Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO) route, aim to travel before 3 PM. Later departures have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Porto from Bilbao Airport (BIO)?
Browse your flight options from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO). This is the only Porto airport you can jet into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO) last-minute?
Last-minute fares from BIO to OPO are generally more expensive. For the lowest prices, start looking for flights ahead of time. That being said, if your travel plans are flexible, it's possible to find a cheap fare just before your departure.
Is it cheaper to book a BIO to OPO flight and hotel package?
Compared with arranging flights and hotels separately, booking a BIO to OPO flight and hotel package with Expedia could result in significant savings. What's more, having everything in one easy place takes the hassle out of planning your trip. Just secure your flights and choose from our wide range of stays, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Bilbao Airport (BIO) to Dr. Francisco de Sa Carneiro Airport (OPO)?
If you reserved your BIO to OPO flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

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*Available to One Key members.