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$496+ Cheap flights from Philadelphia (PHL) to Bilbao (BIO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BIO
Dez 21 — Dez 281
So 12/21
So 12/28
1 adult, Economy
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Find flight deals from Philadelphia to Bilbao

Best flights from Philadelphia to Bilbao
Discover carefully curated flight deals from Philadelphia to Bilbao that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 21, 2025.

This United Airlines deal was found by Cheapflights users on 11/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 1/71:10 pmPHL - BIO
2 stops16h 55mUnited Airlines
Fr 1/166:45 amBIO - PHL
2 stops42h 10mUnited Airlines
Deal found 11/19$496
This Delta deal was found by Cheapflights users on 11/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 1/308:00 amPHL - BIO
2 stops27h 20mDelta
Di 2/36:50 amBIO - PHL
2 stops23h 06mDelta
Deal found 11/19$535
This FlightHub deal was found by Cheapflights users on 11/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 4/75:35 pmPHL - BIO
1 stop13h 45mMultiple Airlines
Mo 4/139:45 amBIO - PHL
2 stops37h 42mMultiple Airlines
Deal found 11/20$546
This FlightHub deal was found by Cheapflights users on 11/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 4/75:35 pmPHL - BIO
1 stop13h 45mLufthansa
Mo 4/135:50 pmBIO - PHL
1 stop28h 10mLufthansa
Deal found 11/20$559
This FlightHub deal was found by Cheapflights users on 11/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 3/313:30 pmPHL - BIO
2 stops20h 20mMultiple Airlines
Mo 4/62:10 pmBIO - PHL
1 stop31h 50mMultiple Airlines
Deal found 11/19$551
This United Airlines deal was found by Cheapflights users on 11/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 2/75:00 pmPHL - BIO
2 stops41h 10mUnited Airlines
Sa 2/1411:35 amBIO - PHL
2 stops52h 13mUnited Airlines
Deal found 11/19$554

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 November 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$476
(Air Canada)

Popular in

June

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
Highest demand for flights based on searches. 15% potential increase in price ($161 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 November 21, 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

Mi 1/7

1:10 pm-12:05 pm

2 stops16h 55m

Bilbao

Fr 1/16

6:45 am-6:55 pm

2 stops42h 10m

$496

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Fr 1/30

8:00 am-5:20 pm

2 stops27h 20m

Bilbao

Di 2/3

6:50 am-11:56 pm

2 stops23h 06m

$535

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Di 4/7

5:35 pm-1:20 pm

1 stop13h 45m

Bilbao

Mo 4/13

9:45 am-5:27 pm

2 stops37h 42m

$546

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Di 3/31

3:30 pm-5:50 pm

2 stops20h 20m

Bilbao

Mo 4/6

2:10 pm-4:00 pm

1 stop31h 50m

$551

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Sa 2/7

5:00 pm-4:10 pm

2 stops41h 10m

Bilbao

Sa 2/14

11:35 am-9:48 am

2 stops52h 13m

$554

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Di 4/7

5:35 pm-1:20 pm

1 stop13h 45m

Bilbao

Mo 4/13

5:50 pm-4:00 pm

1 stop28h 10m

$559

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

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 $356). Flying from Philadelphia to Bilbao in August is currently the most expensive (average of $635). 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 November 21, 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 November 21, 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
9,029 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

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
9,029 reviews
United Airlines
7.4
Good
9,029 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

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
3,027 reviews
United Airlines
7.4
Good
9,029 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

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
7,579 reviews
United Airlines
7.4
Good
9,029 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

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 16h 55m. Fly via United Airlines or Delta to get the fastest option. The distance between Philadelphia and Bilbao is about 3622 mi. This flight may include one or multiple stops.

  • 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 33% lower than the current average price of a flight leaving 3 months from now.

  • 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 $356). Flying from Philadelphia to Bilbao in August is currently the most expensive (average of $635). 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

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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 November 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$580Average$1,021FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$587Average$921FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$685Average$1,065FlexibilityNo cancel feeOn-time69%

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