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$676+ Cheap flights from Portugal to Ontario (ONT)

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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — ONT
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Portugal to Ontario

Keep the following information in mind while searching for Portugal to Ontario flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$797
(American Airlines)

One-way from

$676
(Booking.com)

Popular in

July

Cheapest in

February

Average price

$768
Provider with most accurate pricing for Lisbon Humberto Delgado-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Los Angeles flights.
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From Portugal to Ontario
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One-way flight from Portugal to Ontario
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Highest demand for flights based on searches. 16% potential increase in price ($168 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Portugal to Ontario

Cheapest flights from Portugal to Ontario
Explore the most affordable flight options available from Portugal to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/126:35 amLIS - ONT
2 stops35h 19mAmerican Airlines
Sun 4/204:35 pmONT - LIS
2 stops22h 25mAmerican Airlines
Deal found 2/19$797
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Sat 4/1210:25 amLIS - ONT
2 stops18h 17mUnited Airlines
Fri 4/186:10 amONT - LIS
2 stops18h 10mUnited Airlines
Deal found 2/20$1,649

Find flights from Portugal to Ontario within your budget

Customize your flight search to find flights from Portugal to Ontario 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 February 20, 2025.

Fly from

Portugal

Fly to

Ontario

Route

Depart

Return

Price

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Sat 4/12

6:35 am-9:54 am

2 stops35h 19m

Ontario

Sun 4/20

4:35 pm-11:00 pm

2 stops22h 25m

$797

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Sat 4/12

10:25 am-8:42 pm

2 stops18h 17m

Ontario

Fri 4/18

6:10 am-8:20 am

2 stops18h 10m

$1,649

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Mon 4/7

12:30 pm-11:50 pm

2 stops19h 20m

$676

FaroOntario

FAO - ONT

FAOONT

Faro

Tue 5/13

11:30 am-11:44 pm

2 stops20h 14m

$683

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Wed 3/26

6:30 am-11:54 pm

2 stops24h 24m

$687

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Tue 4/1

8:25 am-10:27 pm

2 stops22h 02m

$697

FaroOntario

FAO - ONT

FAOONT

Faro

Sun 5/11

11:15 am-9:58 pm

2 stops18h 43m

$700

FaroOntario

FAO - ONT

FAOONT

Faro

Mon 5/12

3:45 pm-6:24 pm

2 stops34h 39m

$712

FaroOntario

FAO - ONT

FAOONT

Faro

Mon 5/19

8:10 am-10:41 pm

2 stops22h 31m

$726

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Sat 7/5

5:55 am-10:37 pm

2 stops24h 42m

$877

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 16 results
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Best time to book a flight from Portugal to Ontario

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

Travel insights for flights from Portugal to Ontario

Get recent, data-driven insights about flights from Portugal to Ontario including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Portugal to Ontario (average of $246). Flying from Portugal to Ontario in March is currently the most expensive (average of $315). 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated February 20, 2025.
KLM
7.8
Good
1,333 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,333 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

United Airlines
7.4
Good
8,766 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Iberia
7.0
Good
2,639 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Lufthansa
6.7
Okay
6,984 reviews
KLM
7.8
Good
1,333 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Boarding

7.8

Entertainment

7.2

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Related info for your journey

Find useful and relevant information for your journey from Portugal to Ontario. 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 Ontario from Portugal?

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

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

    The cheapest airlines for a one-way flight from Portugal to Ontario are British Airways ($676), American Airlines ($683), and Iberia ($697).

  • What are the most popular routes from Portugal to Ontario?

    The most popular route from Portugal to Ontario is Lisbon Humberto Delgado - Ontario. You may also consider Faro - Ontario or Ponta Delgada Nordela - Ontario.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Portugal to Ontario (average of $246). Flying from Portugal to Ontario in March is currently the most expensive (average of $315). 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 Portugal to Ontario

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Top airline flying from Portugal to Ontario

Discover the top airline that operate flights from Portugal to Ontario. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$744Average$879FlexibilityNo cancel feeOn-time75%
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