PHL - BIO

$312 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 7/7. 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

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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Cheap Flights from Philadelphia to Bilbao

 
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.

Recent round-trip flight deals from Philadelphia to Bilbao

KAYAK's recommended round-trip deals from the most popular airlines that fly from Philadelphia to Bilbao.
Discover the best prices for you by selecting your travel dates on KAYAK.
American Airlines Logo
1:35 pm - 8:30 amPHL-BIO
12h 55m2 stops
American Airlines Logo
9:15 am - 8:20 pmBIO-PHL
17h 05m2 stops
$653American Airlines
Find Deal
Thu, Sep 18 - Tue, Sep 30
United Airlines Logo
10:10 am - 10:45 amPHL-BIO
18h 35m2 stops
United Airlines Logo
6:45 am - 4:00 pmBIO-PHL
15h 15m1 stop
$680United Airlines
Find Deal
Thu, Sep 18 - Tue, Sep 30
Lufthansa Logo
5:35 pm - 1:20 pmPHL-BIO
13h 45m1 stop
Lufthansa Logo
6:45 am - 4:00 pmBIO-PHL
15h 15m1 stop
$695Lufthansa
Find Deal
Thu, Sep 18 - Tue, Sep 30
 Logo
7:45 am - 8:00 pmPHL-BIO
30h 15m2 stops
 Logo
9:05 pm - 6:30 amBIO-PHL
39h 25m3 stops
Sun, May 18 - Sat, May 24
 Logo
7:45 am - 11:00 pmPHL-BIO
33h 15m3 stops
 Logo
12:45 pm - 6:30 amBIO-PHL
47h 45m3 stops
Sun, May 18 - Sat, May 24
Lufthansa Logo
5:35 pm - 6:20 pmPHL-BIO
18h 45m1 stop
Lufthansa Logo
6:45 am - 4:00 pmBIO-PHL
15h 15m1 stop
$1,135Lufthansa
Find Deal
Tue, Jun 17 - Tue, Jul 1
Aer Lingus Logo
6:10 pm - 5:30 pmPHL-BIO
41h 20m2 stops
Aer Lingus Logo
6:10 pm - 7:00 pmBIO-PHL
30h 50m1 stop
$1,161Aer Lingus
Find Deal
Sat, Jul 5 - Sun, Aug 17
Aer Lingus Logo
6:10 pm - 5:30 pmPHL-BIO
41h 20m2 stops
Aer Lingus Logo
6:10 pm - 5:50 pmBIO-PHL
29h 40m2 stops
$1,166Aer Lingus
Find Deal
Sat, Jul 5 - Sun, Aug 17
Air Canada Logo
9:45 am - 1:25 pmPHL-BIO
21h 40m2 stops
Air Canada Logo
6:45 am - 2:33 pmBIO-PHL
37h 48m2 stops
$1,193Air Canada
Find Deal
Fri, Jun 20 - Thu, Jun 26
Air Canada Logo
3:20 pm - 11:05 amPHL-BIO
13h 45m2 stops
Air Canada Logo
6:45 am - 2:33 pmBIO-PHL
37h 48m2 stops
$1,194Air Canada
Find Deal
Fri, Jun 13 - Fri, Jun 20
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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.

What is the cheapest month to fly from Philadelphia to Bilbao?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Bilbao, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Bilbao is January, where tickets cost $580 (return) on average. On the other hand, the most expensive months are June and November, where the average cost of round-trip tickets is $1,402 and $1,272 respectively.

Good to know

Low seasonFebruary
High seasonJune
Cheapest flight$312
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 46% 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 $312 for a one-way ticket and $653 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.

  • 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.

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 2700 reviews
6.7Comfort
7.1Boarding
6.3Food
7.6Crew
6.6Entertainment
Airline reviews

Flight from Costa Rica to Madrid was excellent. Good food and service. The flight from Madrid to Brussels was very poor . No food , no entertainment, no usb … Total package was quite expensive so you should give same service on the second flight

10.0 ExcellentAnonymous, Apr 2025SJO - MAD
Read more Iberia reviews

Flight from Costa Rica to Madrid was excellent. Good food and service. The flight from Madrid to Brussels was very poor . No food , no entertainment, no usb … Total package was quite expensive so you should give same service on the second flight

We travelled with Level, which is a subsidiary of Iberia. They mixed up all our seats, downgraded few from premium economy fo economy. The crew were not professional, they seem to be in a rush! Also some with an attitude

business class food was pretty average otherwise it was a good experience

Everything OK , except the plane left more than an hour late so I couldn’t participate in an excursion I had that morning in Brcelona

Flight from Madrid to Dakar had no onboard entertainment for a business class. Not even a single screen . That was disappointing. The WiFi only worked for the first 45 mins of the flight.

I paid to upgrade to Business Class. The queue to check in at the Business Class aisle was full of people without Business Class tickets, the fast-track immigration line was “closed” but the representative opened it up for his friends, regardless (there was a lot of fist-bumping), and the lounge was an absolute mess…..4 staff sitting playing with their phones while every table had dirty plates and glasses waiting to be cleared…..and the least said about the rude lady on the reception desk at the lounge , the better!

Great flight, short and good attention. Didn't took any food so can't say thing about it

A 13 hour flight with no food apart from what they offered from a menu you had to pay for. On top of that, there were no blankets, so during the flight when the cabin temperature dropped, everyone was very cold. Neither of these things were highlighted at the time of booking. This is the worst long-haul flight I’ve ever encountered.

Horrible. Paid for seats for my family. Iberia changed planes and never notified us that the seats we paid extra for did not even exist on the plane. We were randomly placed on the plane. Thankfully, we were seated together. Upon boarding, my youngest daughter was pulled from the line and they just arbitrarily changed her seat 7 rows back from the rest of the family. I had to wait at the gate while they tried to see us back together. One of the most uncomfortable small spaces on a plane I’ve ever experienced. When I called Iberia, they first told me that no mistake was made that the plane was never changed. Yet my receipt for my paid seats were for rows that did not even exist on this type of plane we were getting on. They said that they would reimburse my money and I would get an email, but I’ve never received any information or emails regarding a refund for the seats that I had paid extra for. Then when we arrived in Madrid, one of the pieces of luggage that we had checked in was damaged to the point that the handle that was stowed in to the luggage was broken off by the crew members handling the luggage. The crew on the plane was very nice, but as far as the rest of the experience, I would be very hesitant to ever use Iberia again.

Bad business class. Staff totally not helping. Lights and chargers not working

The row of seats were so cramped it was difficult to get in and out of your seat. I even upgraded. A long flight and sad accommodations 😵‍💫 the shorter flight was very comfortable and the seating was spacious

Smooth Flight, Friendly crew, food offering on board was limited.

I bought a ticket and paid for for our luggage but I had to pay for my luggage again. I’m so disappointed! We had a 30 min delay and because of that we missed our connecting flight and were told that we would be on the next flight (9am flight ) but we were landed we were booked at 12pm flight. I had a little baby w me, it was very stressful. I begged to leave at 10 am at least. I was emailed that we get a voucher but they didn’t work when we were at a breakfast store. I’ve been always happy w Lufthansa but this time was awful.

Good service … bus transfer upon arrival from plane to terminal: atrocious!!!

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

We had a 1 1/2 hour delay before we left Denver. When we arrive to Frankfort, they didn’t announce that people with connecting flights to exit the plane first. My next flight was already boarding when we we taxiing in to the gate. I waited another 10 minutes to get off the plane. I had to run to catch my next flight. I mean run! I made it with one minute to spare, but my luggage did not. My luggage came two hours later on a different flight.

My flight was late from US to Frankfurt so I missed my connecting flight flight and I had to wait for long to catch the next flight which was very tiring. Otherwise everyone was very nice.

It would have been nice if my luggage had made it onto my connecting flight as well. Now I have to wait for my luggage to be delivered and that might take a while, which certainly put a damper on the entire experience.

Crew was not happy. Very uncomfortable seats. When person leans back in front of you the screen is too close to me. Food was awful.

They lost my luggage and despite all follow ups through emails and phone calls they don’t give me an update

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

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