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Cheap flights from Ontario to Bilbao from $365

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Bilbao departing on 9/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Ontario to Bilbao

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:00 am - 11:25 pm
ONT
-
BIO
33h 25m
2 stops
United Airlines Logo
7:15 am - 10:03 am
BIO
-
ONT
35h 48m
2 stops
$794United Airlines
Wed, Sep 23 - Tue, Oct 6
United Airlines Logo
5:45 am - 10:45 am
ONT
-
BIO
20h 00m
2 stops
United Airlines Logo
6:50 am - 8:16 pm
BIO
-
ONT
22h 26m
2 stops
$1,029United Airlines
Thu, Sep 17 - Sat, Oct 3
United Airlines Logo
7:00 am - 10:45 am
ONT
-
BIO
18h 45m
2 stops
United Airlines Logo
7:15 am - 6:11 pm
BIO
-
ONT
19h 56m
2 stops
$1,064United Airlines
Sat, Sep 12 - Fri, Sep 18
KLM Logo
1:35 pm - 10:45 pm
ONT
-
BIO
24h 10m
2 stops
KLM Logo
12:00 pm - 10:34 pm
BIO
-
ONT
19h 34m
2 stops
$1,156KLM
Fri, May 8 - Tue, May 12
Iberia Logo
2:22 pm - 8:30 am
ONT
-
BIO
33h 08m
2 stops
Iberia Logo
9:35 pm - 11:06 pm
BIO
-
ONT
34h 31m
2 stops
$1,209Iberia
Thu, Sep 17 - Sat, Oct 3
United Airlines Logo
6:00 am - 5:55 pm
ONT
-
BIO
26h 55m
2 stops
United Airlines Logo
6:50 am - 10:35 pm
BIO
-
ONT
24h 45m
2 stops
$1,227United Airlines
Mon, May 11 - Mon, May 18
Turkish Airlines Logo
11:09 pm - 11:10 am
ONT
-
BIO
27h 01m
2 stops
Turkish Airlines Logo
6:20 pm - 10:01 pm
BIO
-
ONT
60h 41m
2 stops
$1,257Turkish Airlines
Sat, Jun 20 - Thu, Jul 2
Iberia Logo
2:22 pm - 4:55 pm
ONT
-
BIO
17h 33m
2 stops
Iberia Logo
9:35 pm - 11:06 pm
BIO
-
ONT
34h 31m
2 stops
$1,355Iberia
Thu, Sep 17 - Sat, Oct 3
Multiple Airlines Logo
11:50 pm - 11:10 am
ONT
-
BIO
26h 20m
2 stops
Multiple Airlines Logo
12:10 pm - 8:13 pm
BIO
-
ONT
65h 03m
2 stops
$1,377Multiple Airlines
Wed, Sep 2 - Tue, Sep 15
Multiple Airlines Logo
6:00 am - 5:20 pm
ONT
-
BIO
26h 20m
2 stops
Multiple Airlines Logo
12:10 pm - 8:13 pm
BIO
-
ONT
41h 03m
2 stops
$1,395Multiple Airlines
Sat, Sep 12 - Fri, Sep 18

United Airlines flights from Ontario to Bilbao

Our best United Airlines deals on Ontario to Bilbao flight tickets
United Airlines
Sep 23
ONT5:00 amOntario
33h 25m
2 stops
BIO11:25 pmBilbao
Oct 6
BIO7:15 amBilbao
35h 48m
2 stops
ONT10:03 amOntario
$794
United Airlines
Sep 17
ONT5:45 amOntario
20h 00m
2 stops
BIO10:45 amBilbao
Oct 3
BIO6:50 amBilbao
22h 26m
2 stops
ONT8:16 pmOntario
$1,029
United Airlines
Sep 12
ONT7:00 amOntario
18h 45m
2 stops
BIO10:45 amBilbao
Sep 18
BIO7:15 amBilbao
19h 56m
2 stops
ONT6:11 pmOntario
$1,064

Iberia flights from Ontario to Bilbao

Our best Iberia deals on Ontario to Bilbao flight tickets
Iberia
Sep 17
ONT2:22 pmOntario
33h 08m
2 stops
BIO8:30 amBilbao
Oct 3
BIO9:35 pmBilbao
34h 31m
2 stops
ONT11:06 pmOntario
$1,209
Iberia
Sep 17
ONT2:22 pmOntario
17h 33m
2 stops
BIO4:55 pmBilbao
Oct 3
BIO9:35 pmBilbao
34h 31m
2 stops
ONT11:06 pmOntario
$1,355
Iberia
May 28
ONT2:18 pmOntario
21h 22m
2 stops
BIO8:40 pmBilbao
Aug 20
BIO7:15 pmBilbao
32h 32m
2 stops
ONT6:47 pmOntario
$1,486

momondo 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, momondo users made 832,500 searches. Data last updated April 24, 2026.
Use the filters below to find and compare flights from Ontario to Bilbao that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Wed 9/23

5:00 am-11:25 pm

2 stops33h 25m

Bilbao

Tue 10/6

7:15 am-10:03 am

2 stops35h 48m

$794

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Thu 9/17

5:45 am-10:45 am

2 stops20h 00m

Bilbao

Sat 10/3

6:50 am-8:16 pm

2 stops22h 26m

$1,029
Quickest round-trip

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Sat 9/12

7:00 am-10:45 am

2 stops18h 45m

Bilbao

Fri 9/18

7:15 am-6:11 pm

2 stops19h 56m

$1,064

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Fri 5/8

1:35 pm-10:45 pm

2 stops24h 10m

Bilbao

Tue 5/12

12:00 pm-10:34 pm

2 stops19h 34m

$1,156

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Thu 9/17

2:22 pm-8:30 am

2 stops33h 08m

Bilbao

Sat 10/3

9:35 pm-11:06 pm

2 stops34h 31m

$1,209

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Mon 5/11

6:00 am-5:55 pm

2 stops26h 55m

Bilbao

Mon 5/18

6:50 am-10:35 pm

2 stops24h 45m

$1,227

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Sat 6/20

11:09 pm-11:10 am

2 stops27h 01m

Bilbao

Thu 7/2

6:20 pm-10:01 pm

2 stops60h 41m

$1,257

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Thu 9/17

2:22 pm-4:55 pm

2 stops17h 33m

Bilbao

Sat 10/3

9:35 pm-11:06 pm

2 stops34h 31m

$1,355

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Wed 9/2

11:50 pm-11:10 am

2 stops26h 20m

Bilbao

Tue 9/15

12:10 pm-8:13 pm

2 stops65h 03m

$1,377

OntarioBilbao

ONT - BIO

ONTBIO

Ontario

Sat 9/12

6:00 am-5:20 pm

2 stops26h 20m

Bilbao

Fri 9/18

12:10 pm-8:13 pm

2 stops41h 03m

$1,395

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bilbao from

How to get the cheapest flight ticket from Ontario to Bilbao

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Bilbao?

United Airlines is the most popular carrier operating from Ontario to Bilbao

What airlines fly to Bilbao?

Lufthansa, Iberia and United Airlines are the top three most popular airlines that fly to Bilbao from Ontario according to our data. Lufthansa is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Bilbao. Keep in mind that there are 8 different airlines that fly to Bilbao on a routine basis, so you have a few additional options to choose from.

When to book flights from Ontario to Bilbao

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Bilbao according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Bilbao (ONT to BIO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Bilbao

Fastest flight time

17h 20m

Direct flights

None
The fastest flight from Ontario to Bilbao takes 17h 20m
There are no direct flights from Ontario to Bilbao. There are no popular flight routes from Ontario to Bilbao.
Search flight deals

Frequently asked questions about flying from Ontario to Bilbao

  • How far is Ontario to Bilbao by plane?

    A flight from Ontario to Bilbao will travel around 5691.9 mi. By plane, this route typically takes 17h 20m.

  • When did momondo last update prices for flights from Ontario Airport to Bilbao Airport?

    Prices for flights from Ontario Airport to Bilbao Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Ontario Airport to Bilbao Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Bilbao Airport.

  • What documentation or ID do you need to fly to Bilbao Airport?

    The required travel and health documents for your Bilbao Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bilbao Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Bilbao?

Book flights to Bilbao if you plan to visit one of these locations
Getxo
Laredo
Lekeitio

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Bilbao?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Bilbao. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Bilbao with flexible booking policies on momondo?

momondo does allow users to show only those flights to Bilbao from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Bilbao?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bilbao from Ontario.

I’m not ready to book a flight from Ontario to Bilbao right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Bilbao from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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