$458 Cheap Flights from Raleigh (RDU) to Bilbao (BIO)

View $458 flight on Mon, Sep 22, 2025Opens in a new window

Popular airlines from Raleigh-Durham International Airport (RDU) to Bilbao Airport (BIO)

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Cheap Flights from Raleigh to Bilbao (RDU-BIO)

Prices were available within the past 7 days and start at $458 for one-way flights and $573 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Aug 19 - Fri, Sep 5
RDU
Raleigh
BIO
Bilbao
$573 Roundtrip, found 20 hours ago
$573
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Aug 19 from Raleigh to Bilbao, returning Fri, Sep 5, priced at $573 found 20 hours ago
United
Mon, Sep 22 - Tue, Oct 7
RDU
Raleigh
BIO
Bilbao
$584 Roundtrip, found 20 hours ago
$584
Roundtrip
found 20 hours ago
Select United flight, departing Mon, Sep 22 from Raleigh to Bilbao, returning Tue, Oct 7, priced at $584 found 20 hours ago
United
Tue, Aug 19 - Thu, Sep 4
RDU
Raleigh
BIO
Bilbao
$592 Roundtrip, found 20 hours ago
$592
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Aug 19 from Raleigh to Bilbao, returning Thu, Sep 4, priced at $592 found 20 hours ago
United
Mon, Aug 18 - Fri, Sep 5
RDU
Raleigh
BIO
Bilbao
$595 Roundtrip, found 20 hours ago
$595
Roundtrip
found 20 hours ago
Select United flight, departing Mon, Aug 18 from Raleigh to Bilbao, returning Fri, Sep 5, priced at $595 found 20 hours ago
Lufthansa
Tue, Oct 7 - Tue, Oct 14
RDU
Raleigh
BIO
Bilbao
$595 Roundtrip, found 5 days ago
$595
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Tue, Oct 7 from Raleigh to Bilbao, returning Tue, Oct 14, priced at $595 found 5 days ago
United
Tue, Sep 30 - Wed, Oct 15
RDU
Raleigh
BIO
Bilbao
$599 Roundtrip, found 20 hours ago
$599
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Sep 30 from Raleigh to Bilbao, returning Wed, Oct 15, priced at $599 found 20 hours ago
British Airways
Wed, Jan 21 - Wed, Feb 11
RDU
Raleigh
BIO
Bilbao
$604 Roundtrip, found 2 days ago
$604
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, Jan 21 from Raleigh to Bilbao, returning Wed, Feb 11, priced at $604 found 2 days ago
Swiss International Air Lines
Wed, Jan 21 - Wed, Feb 11
RDU
Raleigh
BIO
Bilbao
$610 Roundtrip, found 2 days ago
$610
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Wed, Jan 21 from Raleigh to Bilbao, returning Wed, Feb 11, priced at $610 found 2 days ago
Delta
Sun, Aug 17 - Fri, Sep 5
RDU
Raleigh
BIO
Bilbao
$615 Roundtrip, found 20 hours ago
$615
Roundtrip
found 20 hours ago
Select Delta flight, departing Sun, Aug 17 from Raleigh to Bilbao, returning Fri, Sep 5, priced at $615 found 20 hours ago
Iberia
Tue, Feb 3 - Mon, Feb 9
RDU
Raleigh
BIO
Bilbao
$620 Roundtrip, found 16 hours ago
$620
Roundtrip
found 16 hours ago
Select Iberia flight, departing Tue, Feb 3 from Raleigh to Bilbao, returning Mon, Feb 9, priced at $620 found 16 hours ago

Alternative airports near Bilbao

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

Select flight to Bilbao Airport BIO. Cheapest and Closest option available. Average driving time to city center is 13 minutes. Flights from $728
BIO
Bilbao Airport
CheapestClosest
Average driving time to city center13 min
Flights from $728
Flights from Raleigh (RDU) to Bilbao (BIO)
Origin airport
Raleigh - Durham Intl.
Destination airport
Bilbao
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, KLM, Lufthansa, Scandinavian Airlines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$572
Distance
3932 mi

Raleigh to Bilbao Flights

The cheapest times to fly from Raleigh to Bilbao

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 Raleigh to Bilbao are during the month of August. You can find some of the cheapest flights from Raleigh to Bilbao with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Raleigh to Bilbao

Sunday is one of the best days to book for cheap flights from Raleigh to Bilbao: 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 Raleigh to Bilbao

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 Raleigh to Bilbao in 2025. You can also book with separate airlines for your outbound and return journeys, from $458 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 Raleigh to Bilbao 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 Raleigh to Bilbao 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 Raleigh - Durham Intl. Airport (RDU) to Bilbao Airport (BIO) cost?
Discover the latest flight deals from RDU to BIO by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from RDU to BIO?
The cheapest flights from RDU to BIO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from RDU to BIO?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from RDU to BIO. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Raleigh - Durham Intl. Airport (RDU) to Bilbao Airport (BIO)?
There aren't any daily nonstop flights available from Raleigh - Durham Intl. Airport (RDU) to Bilbao Airport (BIO). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time at all.
What day of the week has the most flights from RDU to BIO?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on various factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Raleigh - Durham Intl. Airport (RDU) to Bilbao Airport (BIO)?
Select a flight from Raleigh - Durham Intl. Airport (RDU) to Bilbao Airport (BIO) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 22% more likely to be canceled.**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.
Is it cheaper to buy a plane ticket from Raleigh - Durham Intl. Airport (RDU) to Bilbao Airport (BIO) last-minute?
Booking your plane ticket from RDU to BIO just before your getaway is usually more expensive. However, if there's some wiggle room with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a RDU to BIO flight and hotel package?
Compared with arranging hotels and flights separately, booking a RDU to BIO flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one easy place takes the hassle out of planning your trip. Simply secure your flights and choose from our extensive range of stays, then customize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Raleigh - Durham Intl. Airport (RDU) to Bilbao Airport (BIO)?
In most instances, you can cancel or reschedule your RDU to BIO flight. However, additional fees may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want further information, go to our Customer Service portal.

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*Available to One Key members.