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$1,243+ Cheap flights from Phoenix 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — BIO
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Phoenix to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Phoenix (PH1) 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 August 14, 2025.

Round-trip from

$5,001
(United Airlines)

Popular in

May

Cheapest in

September

Average price

$872
From Phoenix to Bilbao
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($220 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($100 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from Phoenix to Bilbao

Cheapest flights from Phoenix to Bilbao
Explore the most affordable flight options available from Phoenix to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Mytrip deal was found by Cheapflights users on 8/14. 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.
Fri 8/227:40 amPHX - BIO
2 stops25h 45mMultiple Airlines
Mon 9/17:00 amBIO - PHX
3 stops36h 59mMultiple Airlines
Deal found 8/14$1,243
This United Airlines deal was found by Cheapflights users on 8/13. 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 10/2311:42 amPHX - BIO
2 stops21h 08mUnited Airlines
Wed 10/2911:35 amBIO - PHX
2 stops39h 14mUnited Airlines
Deal found 8/13$5,001

Cheapflights Fare Finder

 
Customize your flight search to find flights from Phoenix 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 August 14, 2025.
Use the filters below to find and compare flights from Phoenix to Bilbao that are best for you.

Fly from

Phoenix

Fly to

Bilbao

Route

Depart

Return

Price

PhoenixBilbao

PHX - BIO

PHXBIO

Phoenix Sky Harbor Intl

Thu 10/23

11:42 am-5:50 pm

2 stops21h 08m

Bilbao

Wed 10/29

11:35 am-6:49 pm

2 stops39h 14m

$5,001

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Best time to book a flight from Phoenix to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Phoenix 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 Phoenix to Bilbao

What is the cheapest time of day to fly from PHX to BIO?

Find hourly flight availability from Phoenix 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 August 14, 2025.

One of the essential ways to save on airfare from Phoenix to Bilbao is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 24% on airfare.

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 August 14, 2025.
Get a feel of what it's like to fly with Delta and United Airlines from Phoenix to Bilbao by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Phoenix to Bilbao. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Bilbao from Phoenix?

    Bilbao (BIO), located 3.0 mi from the city center, is the airport you fly into when you book flights from Phoenix to Bilbao. 2 airlines have flights to Bilbao from Phoenix on a regular basis. Booking flights from Phoenix to Bilbao should not be difficult; the airport handles an average of 0 inbound flights from Phoenix per day.

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

    Cheapflights users have booked flights from Phoenix to Bilbao round-trip from $342. Another airline that can offer you cheap pricing is United Airlines. These flights start at 70% lower than the current average price 3 months from now.

  • Can I find deals for flights from Phoenix to Bilbao that include hotel bookings?

    Yes. In addition to deals on Phoenix to Bilbao flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Phoenix to Bilbao?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Phoenix to Bilbao.

  • Can I find deals for business class flights from Phoenix to Bilbao?

    Yes. Cheapflights offers flight deals from Phoenix 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 Phoenix to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from Phoenix to Bilbao (average of $541). Flying from Phoenix to Bilbao in June is currently the most expensive (average of $1,139). 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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Alternative routes for Phoenix to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Phoenix to Bilbao

Discover the top 2 airlines that operate flights from Phoenix 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$342Average$1,335FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$683Average$1,020FlexibilityNo cancel feeOn-time69%

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