PHL - BIO

$349 Find Cheap Flights from Philadelphia to Bilbao

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Bilbao departing on 5/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Bilbao

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Bilbao, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Bilbao, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$551
Lufthansa
Tue 3/31Mon 4/6
PHL - BIO • 1 stop
Cheapest one-way
$349
Multiple Airlines
Mon 5/4
PHL - BIO • 2 stops
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We hope you love your trip to Bilbao!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Philadelphia to Bilbao (PHL-BIO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Bilbao that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Bilbao

Tue, Mar 31 - Mon, Apr 6
Lufthansa Logo
5:35 pm - 5:10 pm
PHL
-
BIO
17h 35m1 stop
Lufthansa Logo
6:40 pm - 4:00 pm
BIO
-
PHL
27h 20m2 stops
$551Lufthansa
Tue, Mar 31 - Mon, Apr 6
Lufthansa Logo
5:35 pm - 5:10 pm
PHL
-
BIO
17h 35m1 stop
Lufthansa Logo
2:10 pm - 4:00 pm
BIO
-
PHL
31h 50m1 stop
$561Lufthansa
Wed, Jan 7 - Fri, Jan 16
KLM Logo
5:32 pm - 4:30 pm
PHL
-
BIO
16h 58m2 stops
KLM Logo
6:50 am - 7:41 pm
BIO
-
PHL
18h 51m2 stops
$567KLM
Tue, Mar 31 - Mon, Apr 6
Lufthansa Logo
5:35 pm - 5:50 pm
PHL
-
BIO
18h 15m2 stops
Lufthansa Logo
6:35 pm - 4:00 pm
BIO
-
PHL
27h 25m2 stops
$573Lufthansa
Sat, Feb 7 - Sat, Feb 14
Air France Logo
2:00 pm - 5:20 pm
PHL
-
BIO
21h 20m2 stops
Air France Logo
7:25 am - 7:23 pm
BIO
-
PHL
17h 58m2 stops
$591Air France
Fri, Jan 9 - Sun, Jan 18
American Airlines Logo
1:49 pm - 8:30 am
PHL
-
BIO
12h 41m2 stops
American Airlines Logo
9:15 am - 3:40 pm
BIO
-
PHL
12h 25m1 stop
$596American Airlines
Sat, Feb 7 - Sat, Feb 14
American Airlines Logo
7:55 pm - 12:50 pm
PHL
-
BIO
10h 55m1 stop
American Airlines Logo
6:45 am - 6:53 pm
BIO
-
PHL
18h 08m2 stops
$601American Airlines
Sat, Feb 7 - Sat, Feb 14
Iberia Logo
7:55 pm - 12:50 pm
PHL
-
BIO
10h 55m1 stop
Iberia Logo
5:35 pm - 3:35 pm
BIO
-
PHL
28h 00m1 stop
$602Iberia
Fri, Mar 20 - Tue, Mar 24
United Airlines Logo
7:50 am - 12:00 pm
PHL
-
BIO
23h 10m2 stops
United Airlines Logo
6:45 am - 5:05 pm
BIO
-
PHL
15h 20m1 stop
$606United Airlines
Fri, Jan 9 - Sun, Jan 18
American Airlines Logo
11:00 am - 8:30 am
PHL
-
BIO
15h 30m2 stops
American Airlines Logo
9:15 am - 10:02 pm
BIO
-
PHL
18h 47m2 stops
$619American Airlines
Booking Insights

KAYAK's insights & trends for Philadelphia to Bilbao flights

Get data-powered insights and trends into flights from Philadelphia to Bilbao to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly non-stop between Philadelphia and Bilbao?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Philadelphia to Bilbao.

There are 2 airlines that fly nonstop from Philadelphia to Bilbao. They are Iberia and Lufthansa. The cheapest airline for this route is Lufthansa, with the best round-trip deal found costing $673. On average, the best prices for this route can be found at Lufthansa.

Good to know

Low seasonFebruary
Cheapest flight$349
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Philadelphia to Bilbao

When to book flights from Philadelphia to Bilbao

Are your dates flexible? Find out the best times to travel from Philadelphia to Bilbao based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Bilbao

  • What is the cheapest flight from Philadelphia to Bilbao?

    In the last 3 days, the lowest price for a flight from Philadelphia to Bilbao was $349 for a one-way ticket and $551 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Bilbao?

    Yes, you’ll need a passport to travel to Bilbao from Philadelphia.

  • Which aircraft models fly most regularly from Philadelphia to Bilbao?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to Bilbao?

    Star Alliance, and oneworld are the airline alliances operating flights between Philadelphia and Bilbao, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Philadelphia to Bilbao, Iberia or Lufthansa?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Bilbao are Iberia and Lufthansa. With an average price for the route of $1,021 and an overall rating of 7.0, Iberia is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $921 and an overall rating of 6.8.

  • How does KAYAK find such low prices on flights from Philadelphia to Bilbao?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Bilbao.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Bilbao?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bilbao from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Bilbao?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Bilbao with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and BIO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Bilbao?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bilbao from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Philadelphia to Bilbao

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Bilbao. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Bilbao? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
IberiaOverall score based on 3053 reviews
7.1Boarding
6.7Comfort
7.7Crew
6.6Entertainment
6.3Food
Airline reviews

It was fine, older plane with limited entertainment, otherwise fine.

8.0 ExcellentMike, Dec 2025
TFS - MAD
Read more Iberia reviews

It was fine, older plane with limited entertainment, otherwise fine.

the seats were bad and uncomfortable and the food was not tasty.

the seats were so cramped you could barely move. it was difficult to eat when passengers would recline their seats. the seats were so flimsy and unstable that whenever someone got in and out of their seat, it bounced like a spring back in your face. the movies were nice. the food was terrible. even though the conditions were terrible, they tried to pressure passengers to relocate their seats to accommodate adults who were related and wanted to sit next to each other, even after the passengers expressed that they did not want to move for that purpose. on the connecting flight, the “service” consisted of items for purchase. even though the flight was only 45 minutes, once again passengers (including me) were pressured to relocate for people to sit next to each other. they couldn’t be apart for 45 minutes? this was much less compelling than being apart for an 8 hour flight.

Everything went smoothly, and we even arrived 40min earlier than scheduled, on an Orland-Madrid route.

It was budget airline Veuling, even though we booked Iberia.

The staff was very nice and helpful. Some of the best crew I have met.

Bad experience. The seat room are very tight. The food is not good and the breakfast has no hot drink.

Suddenly, I don't find my flight back on the app Help Ticket 0757345716866 Hoeflich Flight back Sunday ib5333 Ib2629 Ib4268

Great : The crew was awesome ♥️ To improve : - The rice in the "Rice with chicken" was rather s kind of rice pudding, not good at all - No power outlet to charge your phone. 😒

It was a good flight overall. Nothing to add. Keep it up!

Ground staff and cabin crew were excellent. Flight was perfectly on time. Zero issues.

Even after a delay, getting off the ground, thanks for keeping me safe, the airline made certain that my connecting flight was rebooked to get me to my final destination. It was actually rebooked twice, and my luggage still managed to meet me. The airline gave me a credit for food and beverage to be used at the airport vendors, regretfully, the credit did not transfer to my final boarding pass. Oh, well…

Trip was smooth, good drew, average meal, almost cold coffee. Excellent landing. Did not enjoy going down the stairs, walking to the gate, walking up the stairs, going a long walk to the exchange gate, and going down the stairs again to be bussed all the way where we originally landed to take our next flight! Over all an average experience. Thank you.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

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

Information on your arrival and departure airports