HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bilbao

$406+ Cheap flights from Ontario (ONT) 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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BIO
déc. 6 — déc. 131
sam. 12/6
sam. 12/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario 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 Ontario to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) 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 novembre 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$485
(United Airlines)

One-way from

$406
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$1,226
Provider with most accurate pricing for Ontario-Bilbao flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Bilbao flights.
Search Deals
From Ontario to Bilbao
Search Deals
One-way flight from Ontario to Bilbao
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($281 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($75 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Ontario to Bilbao

Cheapest flights from Ontario to Bilbao
Explore the most affordable flight options available from Ontario to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on novembre 6, 2025.

This United Airlines deal was found by Cheapflights users on 11/5. 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.
mar. 12/91:50 pmONT - BIO
2 stops23h 05mUnited Airlines
mer. 12/1711:35 amBIO - ONT
2 stops20h 14mUnited Airlines
Deal found 11/5$485
This United Airlines deal was found by Cheapflights users on 11/6. 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.
dim. 11/307:00 amONT - BIO
2 stops24h 10mUnited Airlines
dim. 12/76:45 amBIO - ONT
2 stops24h 04mUnited Airlines
Deal found 11/6$685
This United Airlines deal was found by Cheapflights users on 11/6. 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.
lun. 12/15:05 amONT - BIO
2 stops26h 35mUnited Airlines
dim. 12/76:45 amBIO - ONT
2 stops24h 04mUnited Airlines
Deal found 11/6$696
This Iberia deal was found by Cheapflights users on 11/6. 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.
jeu. 12/116:00 amONT - BIO
2 stops17h 30mIberia
lun. 12/159:35 pmBIO - ONT
2 stops21h 19mIberia
Deal found 11/6$900
This Iberia deal was found by Cheapflights users on 11/5. 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.
jeu. 11/66:10 amONT - BIO
2 stops17h 20mIberia
mer. 11/129:35 pmBIO - ONT
2 stops23h 18mIberia
Deal found 11/5$935
This United Airlines deal was found by Cheapflights users on 11/6. 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.
jeu. 12/111:50 pmONT - BIO
2 stops23h 05mUnited Airlines
jeu. 12/187:40 amBIO - ONT
2 stops22h 27mUnited Airlines
Deal found 11/6$1,084
This Iberia deal was found by Cheapflights users on 11/6. 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.
jeu. 12/116:00 amONT - BIO
2 stops17h 30mIberia
mer. 12/175:35 pmBIO - ONT
2 stops27h 18mIberia
Deal found 11/6$1,190
This United Airlines deal was found by Cheapflights users on 11/6. 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.
sam. 11/156:38 pmONT - BIO
2 stops38h 27mUnited Airlines
sam. 11/2211:35 amBIO - ONT
2 stops38h 59mUnited Airlines
Deal found 11/6$2,031
This United Airlines deal was found by Cheapflights users on 11/5. 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.
sam. 12/276:39 pmONT - BIO
2 stops19h 41mUnited Airlines
dim. 1/46:45 amBIO - ONT
2 stops24h 40mUnited Airlines
Deal found 11/5$6,715

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario 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 novembre 6, 2025.
Use the filters below to find and compare flights from Ontario to Bilbao that are best for you.

Fly from

Ontario

Fly to

Bilbao

Route

Depart

Return

Price

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

mar. 12/9

1:50 pm-9:55 pm

2 stops23h 05m

Bilbao

mer. 12/17

11:35 am-10:49 pm

2 stops20h 14m

$485

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

dim. 11/30

7:00 am-4:10 pm

2 stops24h 10m

Bilbao

dim. 12/7

6:45 am-9:49 pm

2 stops24h 04m

$685

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

lun. 12/1

5:05 am-4:40 pm

2 stops26h 35m

Bilbao

dim. 12/7

6:45 am-9:49 pm

2 stops24h 04m

$696

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

jeu. 12/11

6:00 am-8:30 am

2 stops17h 30m

Bilbao

lun. 12/15

9:35 pm-9:54 am

2 stops21h 19m

$900

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

dim. 4/26

11:01 am-12:45 pm

2 stops16h 44m

Bilbao

jeu. 4/30

6:45 am-11:40 pm

2 stops25h 55m

$1,009

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

dim. 1/4

6:10 am-8:30 am

2 stops17h 20m

Bilbao

sam. 1/10

7:45 pm-2:18 pm

2 stops51h 33m

$1,011

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

jeu. 12/11

1:50 pm-9:55 pm

2 stops23h 05m

Bilbao

jeu. 12/18

7:40 am-9:07 pm

2 stops22h 27m

$1,084

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

ven. 3/27

5:40 am-11:20 pm

2 stops33h 40m

Bilbao

mar. 3/31

2:05 pm-11:06 pm

2 stops18h 01m

$1,092

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

ven. 5/1

4:15 pm-5:50 pm

2 stops16h 35m

Bilbao

dim. 5/17

11:50 am-11:06 pm

2 stops20h 16m

$1,164

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

jeu. 12/11

6:00 am-8:30 am

2 stops17h 30m

Bilbao

mer. 12/17

5:35 pm-11:53 am

2 stops27h 18m

$1,190

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 12 results
1
2
  • Most accurate provider: When it comes to deals on Ontario-Bilbao flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Bilbao flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-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 Ontario-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 Ontario to Bilbao

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

What is the cheapest month to book a flight from Ontario to Bilbao?

Currently, January is the cheapest month in which you can book a flight from Ontario to Bilbao (average of $525). Flying from Ontario to Bilbao in June is currently the most expensive (average of $1,005). 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.

Related info for your journey

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

  • How long is the flight from Ontario to Bilbao?

    For as low as $900, United Airlines can have you in Bilbao from Ontario in 17h 30m. There are 5689 mi between Ontario and Bilbao. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Ontario to Bilbao (average of $525). Flying from Ontario to Bilbao in June is currently the most expensive (average of $1,005). 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.

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.