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Ontario

$715+ Cheap flights from Portugal to Ontario (ONT)

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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — ONT
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$715
(lol.travel)

Popular in

July

Cheapest in

February

Average price

$848
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
Search Deals
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. 2% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 31, 2025.

This lol.travel deal was found by Cheapflights users on 3/29. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/24:55 pmFAO - ONT
2 stops37h 03mMultiple Airlines
Fri 5/97:30 amONT - FAO
2 stops21h 00mMultiple Airlines
Deal found 3/29$715
This United Airlines deal was found by Cheapflights users on 3/31. 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 4/510:25 amLIS - ONT
2 stops18h 17mUnited Airlines
Wed 4/96:10 amONT - LIS
2 stops18h 10mUnited Airlines
Deal found 3/31$1,000

Cheapflights Fare Finder

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 March 31, 2025.
Use the filters below to find and compare flights from Portugal to Ontario that are best for you.

Fly from

Portugal

Fly to

Ontario

Route

Depart

Return

Price

FaroOntario

FAO - ONT

FAOONT

Faro

Fri 5/2

4:55 pm-9:58 pm

2 stops37h 03m

Ontario

Fri 5/9

7:30 am-12:30 pm

2 stops21h 00m

$715

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Tue 6/17

7:15 am-7:01 pm

2 stops19h 46m

$720

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Fri 7/4

5:00 pm-10:30 pm

1 stop37h 30m

$883

FaroOntario

FAO - ONT

FAOONT

Faro

Wed 5/14

7:55 am-9:58 pm

2 stops22h 03m

$887

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Fri 5/30

11:25 am-12:31 pm

2 stops33h 06m

$921

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Sat 5/31

8:35 am-9:10 pm

2 stops20h 35m

$963

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Thu 7/24

12:30 pm-10:58 pm

2 stops18h 28m

$997

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Mon 6/30

6:35 am-7:01 pm

2 stops20h 26m

$1,001

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

Tue 7/29

8:25 am-10:58 pm

2 stops22h 33m

$1,018

FaroOntario

FAO - ONT

FAOONT

Faro

Fri 8/1

7:50 pm-6:59 pm

2 stops31h 09m

$1,024

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 12 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.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Ontario

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 $326). 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 March 31, 2025.
United Airlines
7.4
Good
8,614 reviews

Comfort

7.3

Entertainment

7.0

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.
United Airlines
7.4
Good
8,614 reviews
United Airlines
7.4
Good
8,614 reviews

Comfort

7.3

Entertainment

7.0

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,614 reviews

Comfort

7.3

Entertainment

7.0

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.
TAP AIR PORTUGAL
7.1
Good
1,831 reviews
United Airlines
7.4
Good
8,614 reviews

Comfort

7.3

Entertainment

7.0

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.
Iberia
7.0
Good
2,653 reviews
United Airlines
7.4
Good
8,614 reviews

Comfort

7.3

Entertainment

7.0

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.
Lufthansa
6.7
Okay
6,961 reviews
United Airlines
7.4
Good
8,614 reviews

Comfort

7.3

Entertainment

7.0

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.

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 TAP AIR PORTUGAL ($883), Iberia ($887), and United Airlines ($921).

  • 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 $326). 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$744Average$879FlexibilityNo cancel feeOn-time75%
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