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$552+ 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BIO
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$680
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$936
Provider with most accurate pricing for Philadelphia-Bilbao flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-Bilbao flights.
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From Philadelphia to Bilbao
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Highest demand for flights based on searches. 19% potential increase in price ($238 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 29, 2025.

This United Airlines deal was found by Cheapflights users on 4/27. 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.
Thu 9/181:03 pmPHL - BIO
2 stops15h 42mUnited Airlines
Tue 9/306:45 amBIO - PHL
1 stop15h 15mUnited Airlines
Deal found 4/27$680
This lol.travel deal was found by Cheapflights users on 4/27. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/153:25 pmPHL - BIO
2 stops17h 20mAir Canada
Wed 9/246:45 amBIO - PHL
2 stops20h 53mAir Canada
Deal found 4/27$681
This FlightHub deal was found by Cheapflights users on 4/27. 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.
Thu 9/185:35 pmPHL - BIO
1 stop18h 45mLufthansa
Tue 9/306:45 amBIO - PHL
1 stop15h 15mLufthansa
Deal found 4/27$695
This Finnair deal was found by Cheapflights users on 4/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:25 pmPHL - BIO
1 stop10h 20mMultiple Airlines
Wed 9/246:45 amBIO - PHL
1 stop15h 10mMultiple Airlines
Deal found 4/27$713
This Finnair deal was found by Cheapflights users on 4/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/18:25 pmPHL - BIO
1 stop19h 30mFinnair
Tue 6/176:45 amBIO - PHL
1 stop15h 00mFinnair
Deal found 4/27$1,118
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/256:00 amPHL - BIO
2 stops47h 05mTurkish Airlines
Sun 6/16:30 pmBIO - PHL
2 stops45h 08mTurkish Airlines
Deal found 4/28$1,189
This Iberia deal was found by Cheapflights users on 4/28. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/218:25 pmPHL - BIO
1 stop20h 50mIberia
Sat 6/285:35 pmBIO - PHL
1 stop28h 10mIberia
Deal found 4/28$1,377
This TAP AIR PORTUGAL deal was found by Cheapflights users on 4/27. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/153:00 pmPHL - BIO
2 stops21h 00mTAP AIR PORTUGAL
Wed 9/2412:25 pmBIO - PHL
3 stops26h 55mTAP AIR PORTUGAL
Deal found 4/27$1,502

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 April 29, 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

Thu 9/18

1:03 pm-10:45 am

2 stops15h 42m

Bilbao

Tue 9/30

6:45 am-4:00 pm

1 stop15h 15m

$680

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Mon 9/15

3:25 pm-2:45 pm

2 stops17h 20m

Bilbao

Wed 9/24

6:45 am-9:38 pm

2 stops20h 53m

$681

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Thu 9/18

5:35 pm-6:20 pm

1 stop18h 45m

Bilbao

Tue 9/30

6:45 am-4:00 pm

1 stop15h 15m

$695

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Mon 9/15

8:25 pm-12:45 pm

1 stop10h 20m

Bilbao

Wed 9/24

6:45 am-3:55 pm

1 stop15h 10m

$713

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Sun 6/1

8:25 pm-9:55 pm

1 stop19h 30m

Bilbao

Tue 6/17

6:45 am-3:45 pm

1 stop15h 00m

$1,118

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Sun 5/25

6:00 am-11:05 am

2 stops47h 05m

Bilbao

Sun 6/1

6:30 pm-9:38 am

2 stops45h 08m

$1,189

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Sat 6/21

8:25 pm-11:15 pm

1 stop20h 50m

Bilbao

Sat 6/28

5:35 pm-3:45 pm

1 stop28h 10m

$1,377

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Mon 9/15

3:00 pm-6:00 pm

2 stops21h 00m

Bilbao

Wed 9/24

12:25 pm-9:20 am

3 stops26h 55m

$1,502

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Fri 8/22

12:29 pm-2:00 pm

3 stops43h 31m

$552

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Fri 8/22

8:30 pm-5:30 pm

1 stop15h 00m

$597

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 12 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 April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Bilbao flight deals on Cheapflights vs. FlightHub >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, January is the cheapest month in which you can book a flight from Philadelphia to Bilbao (average of $541). Flying from Philadelphia to Bilbao in June is currently the most expensive (average of $1,178). 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 April 29, 2025.

Unlike in the morning, 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 afternoon.

Rainfall in Bilbao by month

Plan your trip to Bilbao by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bilbao ranges from 2.4 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Bilbao when rainfall is around 2.4 in.

Temperature in Bilbao by month

Plan your trip to Bilbao by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bilbao, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 April 29, 2025.
Finnair
7.6
Good
1,273 reviews

Boarding

7.6

Comfort

7.4

Crew

8.1

Entertainment

6.9

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Finnair
7.6
Good
1,273 reviews
Finnair
7.6
Good
1,273 reviews

Boarding

7.6

Comfort

7.4

Crew

8.1

Entertainment

6.9

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
United Airlines
7.4
Good
8,696 reviews
Finnair
7.6
Good
1,273 reviews

Boarding

7.6

Comfort

7.4

Crew

8.1

Entertainment

6.9

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Turkish Airlines
7.3
Good
3,785 reviews
Finnair
7.6
Good
1,273 reviews

Boarding

7.6

Comfort

7.4

Crew

8.1

Entertainment

6.9

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
TAP AIR PORTUGAL
7.1
Good
1,850 reviews
Finnair
7.6
Good
1,273 reviews

Boarding

7.6

Comfort

7.4

Crew

8.1

Entertainment

6.9

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Air Canada
7.0
Good
9,240 reviews
Finnair
7.6
Good
1,273 reviews

Boarding

7.6

Comfort

7.4

Crew

8.1

Entertainment

6.9

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

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.

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

    Currently priced at $680, United Airlines will fly you from Philadelphia to Bilbao and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and Lufthansa - these airlines can fly you to your destination from $681 and $695, respectively. United Airlines is priced at 28% 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, January is the cheapest month in which you can book a flight from Philadelphia to Bilbao (average of $541). Flying from Philadelphia to Bilbao in June is currently the most expensive (average of $1,178). 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

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Top 2 airlines flying from Philadelphia to Bilbao

Discover the top 2 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$496Average$1,009FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$725Average$953FlexibilityNo cancel feeOn-time76%

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