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Ontario

$559+ 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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — ONT
ene. 3 — ene. 101
sáb. 1/3
sáb. 1/10
1 adult, Economy
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Cheap 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 diciembre 4, 2025.

This American Airlines deal was found by Cheapflights users on 12/3. 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.
mié. 12/2411:05 amLIS - ONT
2 stops32h 48mAmerican Airlines
mié. 1/283:09 pmONT - LIS
2 stops18h 31mAmerican Airlines
Deal found 12/3$879
This American Airlines deal was found by Cheapflights users on 12/3. 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.
mié. 12/2411:05 amLIS - ONT
2 stops34h 47mAmerican Airlines
mar. 3/109:53 amONT - LIS
2 stops16h 22mAmerican Airlines
Deal found 12/3$892
This Delta deal was found by Cheapflights users on 12/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/245:30 amLIS - ONT
2 stops19h 38mDelta
jue. 1/226:00 amONT - LIS
2 stops18h 00mDelta
Deal found 12/3$980
This Delta deal was found by Cheapflights users on 12/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/2011:15 amLIS - ONT
2 stops20h 08mDelta
jue. 1/226:00 amONT - LIS
2 stops18h 00mDelta
Deal found 12/3$991
This United Airlines deal was found by Cheapflights users on 12/3. 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.
sáb. 12/2011:55 amLIS - ONT
2 stops18h 30mUnited Airlines
sáb. 1/246:00 amONT - LIS
2 stops18h 10mUnited Airlines
Deal found 12/3$1,010
This American Airlines deal was found by Cheapflights users on 12/4. 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.
mar. 12/307:00 pmFAO - ONT
2 stops31h 16mMultiple Airlines
lun. 1/510:50 amONT - FAO
2 stops23h 15mMultiple Airlines
Deal found 12/4$1,544

Find flight deals from Portugal to Ontario

Keep the following information in mind while searching for Portugal to Ontario flight deals. Data was last updated diciembre 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$745
(American Airlines)

One-way from

$559
(Iberia)

Popular in

August

Cheapest in

February

Average price

$898
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
One-way flight from Portugal to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
Search Deals

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 diciembre 4, 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

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

jue. 2/19

6:10 am-10:57 pm

2 stops24h 47m

Ontario

lun. 2/23

1:45 pm-10:15 am

2 stops36h 30m

$820

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

mié. 12/24

11:05 am-11:53 am

2 stops32h 48m

Ontario

mié. 1/28

3:09 pm-5:40 pm

2 stops18h 31m

$879

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

jue. 2/19

8:20 am-9:29 pm

2 stops21h 09m

Ontario

lun. 2/23

10:59 am-2:55 pm

2 stops19h 56m

$880

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

mié. 12/24

5:30 am-5:08 pm

2 stops19h 38m

Ontario

jue. 1/22

6:00 am-8:00 am

2 stops18h 00m

$980

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

sáb. 12/20

11:15 am-11:23 pm

2 stops20h 08m

Ontario

mié. 1/21

6:00 am-8:00 am

2 stops18h 00m

$991

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

sáb. 12/20

11:15 am-11:23 pm

2 stops20h 08m

Ontario

jue. 1/22

6:00 am-8:00 am

2 stops18h 00m

$991

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

sáb. 12/20

11:55 am-10:25 pm

2 stops18h 30m

Ontario

sáb. 1/24

6:00 am-8:10 am

2 stops18h 10m

$1,010

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

sáb. 1/10

10:15 am-8:58 pm

2 stops18h 43m

Ontario

vie. 1/30

6:00 am-8:10 am

2 stops18h 10m

$1,070

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

vie. 5/1

6:05 am-10:38 pm

2 stops24h 33m

Ontario

vie. 5/15

11:25 pm-11:35 pm

2 stops40h 10m

$1,281

FaroOntario

FAO - ONT

FAOONT

Faro

mar. 12/30

7:00 pm-6:16 pm

2 stops31h 16m

Ontario

lun. 1/5

10:50 am-6:05 pm

2 stops23h 15m

$1,544

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 26 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, May is the cheapest month in which you can book a flight from Portugal to Ontario (average of $305). Flying from Portugal to Ontario in August is currently the most expensive (average of $732). 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 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.

  • How long is the flight from Portugal to Ontario?

    There are many flights that can get you from Portugal to Ontario in 21h 09m. Fly via American Airlines or British Airways to get the fastest option. The distance from Portugal to Ontario is about 5634 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, May is the cheapest month in which you can book a flight from Portugal to Ontario (average of $305). Flying from Portugal to Ontario in August is currently the most expensive (average of $732). 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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