HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Algarve

$341+ Cheap flights from Ontario (ONT) to Algarve

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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FAO
Dec 18 — Dec 251
Thu 12/18
Thu 12/25
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Algarve 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.

Find flight deals from Ontario to Algarve

Cheapest flights from Ontario to Algarve
Explore the most affordable flight options available from Ontario to Algarve. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 18, 2025.

This KLM deal was found by Cheapflights users on 11/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:00 amONT - FAO
2 stops28h 15mKLM
Sun 12/149:55 amFAO - ONT
2 stops38h 14mKLM
Deal found 11/16$811
This United Airlines deal was found by Cheapflights users on 11/17. 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.
Wed 12/106:41 pmONT - FAO
2 stops57h 54mUnited Airlines
Sun 12/141:30 pmFAO - ONT
2 stops36h 07mUnited Airlines
Deal found 11/17$1,435
This British Airways deal was found by Cheapflights users on 11/18. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1312:44 pmONT - FAO
2 stops21h 31mBritish Airways
Wed 12/246:40 pmFAO - ONT
2 stops31h 38mBritish Airways
Deal found 11/18$3,547

Cheap flight deals from Ontario to Algarve

Keep the following information in mind while searching for Ontario to Algarve flight deals. Data was last updated November 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$802
(Iberia)

One-way from

$341
(KLM)

Popular in

July

Cheapest in

August

Average price

$755
Provider with most accurate pricing for Los Angeles-Faro flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Faro flights.
Search Deals
From Ontario to Algarve
Search Deals
One-way flight from Ontario to Algarve
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($139 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Algarve 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 November 18, 2025.
Use the filters below to find and compare flights from Ontario to Algarve that are best for you.

Fly from

Ontario

Fly to

Algarve

Route

Depart

Return

Price

OntarioFaro

ONT - FAO

ONTFAO

Ontario

Fri 4/17

11:01 am-12:30 pm

2 stops17h 29m

Faro

Fri 5/1

7:50 pm-11:40 pm

2 stops35h 50m

$802

OntarioFaro

ONT - FAO

ONTFAO

Ontario

Wed 12/10

6:00 am-6:15 pm

2 stops28h 15m

Faro

Sun 12/14

9:55 am-4:09 pm

2 stops38h 14m

$811

OntarioFaro

ONT - FAO

ONTFAO

Ontario

Wed 12/10

6:41 pm-12:35 pm

2 stops57h 54m

Faro

Sun 12/14

1:30 pm-5:37 pm

2 stops36h 07m

$1,435

OntarioFaro

ONT - FAO

ONTFAO

Ontario

Sat 12/13

12:44 pm-6:15 pm

2 stops21h 31m

Faro

Wed 12/24

6:40 pm-6:18 pm

2 stops31h 38m

$3,547

OntarioFaro

ONT - FAO

ONTFAO

Ontario

Sun 2/15

1:09 pm-6:25 pm

2 stops21h 16m

$341

OntarioFaro

ONT - FAO

ONTFAO

Ontario

Wed 2/18

10:59 am-6:10 pm

2 stops23h 11m

$353

OntarioFaro

ONT - FAO

ONTFAO

Ontario

Tue 2/17

10:59 am-10:00 am

2 stops39h 01m

$437

OntarioFaro

ONT - FAO

ONTFAO

Ontario

Sat 3/7

11:59 pm-5:20 pm

2 stops33h 21m

$442

OntarioFaro

ONT - FAO

ONTFAO

Ontario

Wed 3/11

5:15 am-11:40 am

3 stops23h 25m

$465

OntarioFaro

ONT - FAO

ONTFAO

Ontario

Tue 3/10

11:59 pm-11:40 am

2 stops28h 41m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/17

Showing 1-10 of 15 results
1
2

Best time to book a flight from Ontario to Algarve

Have a flexible travel schedule? Discover the best time to fly to Algarve 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 Algarve

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

Currently, August is the cheapest month in which you can book a flight from Ontario to Algarve (average of $480). Flying from Ontario to Algarve in July is currently the most expensive (average of $1,049). 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 Algarve. 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 from for flights from Ontario to Algarve?

    If you book a flight to Algarve from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Ontario to Algarve?

    Departing from Ontario to Algarve will take you 21h 31m. Ontario and Algarve are separated by a distance of 5759 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Ontario to Algarve one-way?

    For one-way options, check prices for KLM. According to our data, you can fly for as low as $341. Users have also found prices from $353 and $442 on British Airways and American Airlines, respectively.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Ontario to Algarve (average of $480). Flying from Ontario to Algarve in July is currently the most expensive (average of $1,049). 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.

Alternative routes for Ontario to Algarve

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to Lisbon flights
Los Angeles to Lisbon flights
San Diego to Lisbon flights
Santa Ana to Lisbon flights
Ontario to Lisbon flights
San Francisco to Porto flights
San Jose to Lisbon flights
Los Angeles to Porto flights
Sacramento to Lisbon flights
Las Vegas to Lisbon flights
Oakland to Lisbon flights
Sacramento to Porto flights
Los Angeles to Funchal flights
San Francisco to Faro flights
Los Angeles to Ponta Delgada flights
San Diego to Porto flights
San Francisco to Ponta Delgada flights
San Francisco to Funchal flights
Reno to Lisbon flights
Los Angeles to Faro flights
Ontario to Porto flights
Burbank to Lisbon flights
San Francisco to Lajes flights
Santa Ana to Porto flights
Palm Springs to Lisbon flights
Santa Barbara to Lisbon flights
San Diego to Faro flights
Monterey to Lisbon flights
San Jose to Porto flights
Long Beach to Lisbon flights
Ontario to Faro flights
Fresno to Lisbon flights
Santa Rosa to Lisbon flights
Oakland to Faro flights
San Diego to Ponta Delgada flights
Burbank to Porto flights
San Jose to Funchal flights
San Francisco to Porto Santo flights
Oakland to Funchal flights
Oakland to Porto flights
Las Vegas to Faro flights
San Francisco to Horta flights
Santa Ana to Faro flights
Burbank to Faro flights
Las Vegas to Funchal flights
San Jose to Faro flights
Los Angeles to Lajes flights
Oakland to Ponta Delgada flights
Long Beach to Faro flights

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.