HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bilbao

$695+ 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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BIO
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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.

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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$801
(American Airlines)

Popular in

June

Cheapest in

January

Average price

$656
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. 11% potential increase in price ($115 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

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 March 28, 2025.

This Orbitz deal was found by Cheapflights users on 3/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/19:05 pmPHL - BIO
2 stops34h 45mIberia
Sun 11/99:15 amBIO - PHL
1 stop12h 20mIberia
Deal found 3/27$695
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 11/16:35 pmPHL - BIO
2 stops36h 20mUnited Airlines
Sun 11/96:45 amBIO - PHL
2 stops15h 06mUnited Airlines
Deal found 3/27$700
This Gurufare deal was found by Cheapflights users on 3/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/19:00 pmPHL - BIO
1 stop30h 30mMultiple Airlines
Sun 11/99:15 amBIO - PHL
1 stop12h 20mMultiple Airlines
Deal found 3/27$782
This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/111:35 pmPHL - BIO
2 stops17h 10mAmerican Airlines
Fri 8/226:45 amBIO - PHL
1 stop15h 05mAmerican Airlines
Deal found 3/27$801
This KAYAK deal was found by Cheapflights users on 3/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/195:35 pmPHL - BIO
1 stop18h 45mLufthansa
Mon 6/302:10 pmBIO - PHL
1 stop31h 50mLufthansa
Deal found 3/26$924
This Mytrip deal was found by Cheapflights users on 3/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/223:30 pmPHL - BIO
2 stops20h 20mAir Canada
Sun 4/277:40 amBIO - PHL
2 stops37h 07mAir Canada
Deal found 3/26$1,078
This Delta deal was found by Cheapflights users on 3/26. 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.
Wed 4/1611:31 amPHL - BIO
2 stops16h 54mDelta
Sun 4/206:50 amBIO - PHL
2 stops20h 19mDelta
Deal found 3/26$1,090
This Gurufare deal was found by Cheapflights users on 3/26. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/248:30 pmPHL - BIO
1 stop15h 00mAer Lingus
Sun 8/36:10 pmBIO - PHL
1 stop30h 50mAer Lingus
Deal found 3/26$1,207

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 March 28, 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

Wed 4/23

7:00 am-10:40 pm

3 stops33h 40m

Bilbao

Tue 4/29

7:40 am-10:58 am

3 stops33h 18m

$812

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Tue 6/10

3:20 pm-6:20 pm

2 stops21h 00m

Bilbao

Tue 6/17

6:45 am-2:33 pm

2 stops37h 48m

$818

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Fri 6/20

10:35 am-5:50 pm

2 stops25h 15m

Bilbao

Thu 6/26

6:45 am-2:33 pm

2 stops37h 48m

$891

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Tue 4/22

8:35 pm-6:50 pm

1 stop16h 15m

Bilbao

Tue 4/29

9:15 am-3:55 pm

1 stop12h 40m

$896

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Thu 6/19

5:35 pm-6:20 pm

1 stop18h 45m

Bilbao

Mon 6/30

2:10 pm-4:00 pm

1 stop31h 50m

$924

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Wed 4/16

11:31 am-10:25 am

2 stops16h 54m

Bilbao

Sun 4/20

6:50 am-9:09 pm

2 stops20h 19m

$1,090

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Mon 4/14

8:35 pm-4:55 pm

1 stop14h 20m

Bilbao

Sun 4/20

9:15 am-3:55 pm

1 stop12h 40m

$2,208

PhiladelphiaBilbao

PHL - BIO

PHLBIO

Philadelphia

Wed 4/16

8:30 pm-5:30 pm

1 stop15h 00m

Bilbao

Sun 4/20

6:10 pm-7:00 pm

1 stop30h 50m

$2,260

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

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 March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*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 FlightHub the most. FlightHub 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 March 28, 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 March 28, 2025.
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,603 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Lufthansa
6.7
Okay
6,955 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 $801, American Airlines will fly you from Philadelphia to Bilbao and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Lufthansa - these airlines can fly you to your destination from $891 and $1,022, respectively. American Airlines is priced at 13% 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

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

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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$587Average$900FlexibilityNo cancel feeOn-time76%
IberiaCheapest$664Average$1,021FlexibilityNo cancel feeOn-time77%
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.