HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bilbao

$351+ Cheap flights from Philadelphia (PHL) to Bilbao (BIO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BIO
dic. 4 — dic. 111
jue. 12/4
jue. 12/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to Bilbao with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Philadelphia to Bilbao

Cheapest flights from Philadelphia to Bilbao
Explore the most affordable flight options available from Philadelphia to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 4, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/191:46 pmPHL - BIO
2 stops26h 49mMultiple Airlines
vie. 12/264:50 pmBIO - PHL
1 stop29h 10mMultiple Airlines
Deal found 11/4$1,677

Cheap flight deals from Philadelphia to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Bilbao (BIO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$485
(United Airlines)

One-way from

$351
(Kiwi.com)

Popular in

October

Cheapest in

February
Provider with most accurate pricing for Philadelphia-Bilbao flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Bilbao flights.
Search Deals
From Philadelphia to Bilbao
Search Deals
One-way flight from Philadelphia to Bilbao
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Bilbao that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 4, 2025.
Use the filters below to find and compare flights from Philadelphia to Bilbao that are best for you.

Fly from

Philadelphia

Fly to

Bilbao

Route

Depart

Return

Price

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

mar. 3/31

7:20 pm-4:40 pm

2 stops15h 20m

Bilbao

lun. 4/6

6:50 am-5:16 pm

2 stops16h 26m

$484

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

mar. 4/7

7:20 pm-4:40 pm

2 stops15h 20m

Bilbao

lun. 4/13

6:50 am-5:14 pm

2 stops16h 24m

$484

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

mié. 1/7

5:00 pm-6:05 pm

2 stops19h 05m

Bilbao

vie. 1/16

6:45 am-9:51 pm

2 stops21h 06m

$485

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

mié. 1/7

7:45 pm-6:05 pm

2 stops16h 20m

Bilbao

vie. 1/16

6:45 am-6:54 pm

2 stops18h 09m

$485

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

mar. 2/17

3:30 pm-12:50 pm

2 stops15h 20m

Bilbao

lun. 2/23

12:50 pm-2:47 pm

2 stops31h 57m

$490

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

mar. 2/17

1:40 pm-11:15 pm

2 stops27h 35m

Bilbao

lun. 2/23

9:35 pm-3:35 pm

1 stop24h 00m

$505

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

mié. 1/7

9:20 pm-11:15 pm

2 stops19h 55m

Bilbao

vie. 1/16

6:45 am-3:40 pm

1 stop14h 55m

$521

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

sáb. 2/7

7:45 pm-10:50 am

2 stops33h 05m

Bilbao

sáb. 2/14

11:35 am-9:38 pm

2 stops40h 03m

$546

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

mar. 1/6

5:29 pm-12:20 pm

3 stops36h 51m

$351

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

mar. 1/6

12:11 pm-11:30 am

2 stops17h 19m

$422

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 15 results
1
2

Compare providers for flights from Philadelphia to Bilbao

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Bilbao in November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Bilbao flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Philadelphia-Bilbao flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Philadelphia-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Bilbao flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Bilbao flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to Bilbao

What is the cheapest month to book a flight from Philadelphia to Bilbao?

Currently, October is the cheapest month in which you can book a flight from Philadelphia to Bilbao (average of $361). Flying from Philadelphia to Bilbao in August is currently the most expensive (average of $638). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHL to BIO?

Find hourly flight availability from Philadelphia to Bilbao. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 4, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 29% on flights from Philadelphia to Bilbao by exploring options for tickets in the evening.

Reviews of airlines servicing Bilbao

Get insights into the airlines that provide service to Bilbao. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bilbao. Reviews last updated noviembre 4, 2025.
See what other customers who have flown with United Airlines, Iberia, and Lufthansa from Philadelphia to Bilbao have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,998 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,998 reviews
United Airlines
7.4
Good
8,998 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Iberia
7.0
Good
3,006 reviews
United Airlines
7.4
Good
8,998 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Lufthansa
6.8
Okay
7,547 reviews
United Airlines
7.4
Good
8,998 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Bilbao. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Philadelphia to Bilbao?

    There are many flights that can get you from Philadelphia to Bilbao in 19h 05m. Fly via United Airlines to get the fastest option. The distance between Philadelphia and Bilbao is about 3622 mi.

  • What are the cheapest airlines flying from Philadelphia to Bilbao round-trip?

    Currently priced at $580, Iberia will fly you from Philadelphia to Bilbao and back. In addition to Iberia, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and United Airlines - these airlines can fly you to your destination from $587 and $685, respectively. Iberia is priced at 36% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Philadelphia to Bilbao one-way?

    To fly one-way, consider booking your trip with Air France, which is currently one of the cheapest options available, starting at $422. Delta flights start at $423 while deals on Lufthansa start at $436 one-way.

  • Can I find deals for flights from Philadelphia to Bilbao that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Bilbao flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Bilbao?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Bilbao.

  • Can I find deals for business class flights from Philadelphia to Bilbao?

    Yes. Cheapflights offers flight deals from Philadelphia to Bilbao by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to Bilbao?

    Currently, October is the cheapest month in which you can book a flight from Philadelphia to Bilbao (average of $361). Flying from Philadelphia to Bilbao in August is currently the most expensive (average of $638). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Philadelphia to Bilbao

Discover the top 3 airlines that operate flights from Philadelphia to Bilbao. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$580Average$1,021FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$587Average$921FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$685Average$1,065FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.