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Ontario

$674+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — ONT
ago. 25 — sep. 11
lun. 8/25
lun. 9/1
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 agosto 20, 2025.

Round-trip from

$836
(United Airlines)

One-way from

$674
(Trip.com)

Popular in

August

Cheapest in

February

Average price

$1,067
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. 12% potential increase in price ($120 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in August 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 agosto 20, 2025.

This American Airlines deal was found by Cheapflights users on 8/19. 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.
jue. 11/610:55 amLIS - ONT
2 stops19h 28mAmerican Airlines
jue. 11/271:31 pmONT - LIS
2 stops20h 29mAmerican Airlines
Deal found 8/19$849
This British Airways deal was found by Cheapflights users on 8/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/67:00 amLIS - ONT
2 stops24h 57mBritish Airways
sáb. 11/294:47 pmONT - LIS
2 stops17h 08mBritish Airways
Deal found 8/19$861
This Air Canada deal was found by Cheapflights users on 8/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/312:50 pmLIS - ONT
2 stops31h 42mMultiple Airlines
mié. 9/106:00 amONT - LIS
2 stops19h 20mMultiple Airlines
Deal found 8/20$918
This American Airlines deal was found by Cheapflights users on 8/19. 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.
sáb. 8/306:35 amLIS - ONT
2 stops24h 13mAmerican Airlines
sáb. 9/136:10 amONT - LIS
2 stops18h 55mAmerican Airlines
Deal found 8/19$942
This KLM deal was found by Cheapflights users on 8/18. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/47:05 pmFAO - ONT
2 stops29h 09mKLM
lun. 12/87:00 amONT - FAO
2 stops27h 55mKLM
Deal found 8/18$951
This Iberia deal was found by Cheapflights users on 8/20. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/27:40 pmFAO - ONT
2 stops34h 53mMultiple Airlines
mar. 10/72:51 pmONT - FAO
2 stops20h 19mMultiple Airlines
Deal found 8/20$1,067
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/15:40 amLIS - ONT
2 stops21h 31mDelta
mié. 9/1011:45 amONT - LIS
2 stops19h 05mDelta
Deal found 8/19$1,071
This American Airlines deal was found by Cheapflights users on 8/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/207:20 amLIS - ONT
2 stops19h 04mAmerican Airlines
mié. 9/36:10 amONT - LIS
2 stops18h 55mAmerican Airlines
Deal found 8/18$1,170
This Justfly.com deal was found by Cheapflights users on 8/18. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/2512:55 pmLIS - ONT
2 stops31h 56mAir Canada
lun. 9/296:27 pmONT - LIS
2 stops32h 38mAir Canada
Deal found 8/18$1,190
This Iberia deal was found by Cheapflights users on 8/19. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/112:30 pmFAO - ONT
2 stops19h 37mIberia
dom. 9/710:55 amONT - FAO
2 stops16h 55mIberia
Deal found 8/19$2,644
This British Airways deal was found by Cheapflights users on 8/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/1911:15 amFAO - ONT
2 stops18h 34mBritish Airways
jue. 10/3012:48 pmONT - FAO
2 stops20h 57mBritish Airways
Deal found 8/19$4,560

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 agosto 20, 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. 2/5

5:00 am-8:17 pm

2 stops23h 17m

Ontario

dom. 2/8

7:00 am-8:10 am

2 stops17h 10m

$836

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

vie. 2/13

11:05 am-11:43 pm

2 stops20h 38m

Ontario

mar. 2/17

11:05 am-5:40 pm

2 stops22h 35m

$849

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

jue. 11/6

10:55 am-10:23 pm

2 stops19h 28m

Ontario

jue. 11/27

1:31 pm-6:00 pm

2 stops20h 29m

$849

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

jue. 11/6

7:00 am-11:57 pm

2 stops24h 57m

Ontario

sáb. 11/29

4:47 pm-5:55 pm

2 stops17h 08m

$861

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

jue. 1/8

10:10 pm-10:02 pm

2 stops31h 52m

Ontario

mié. 1/21

10:57 am-4:05 pm

2 stops21h 08m

$885

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

jue. 1/8

10:10 pm-10:02 pm

2 stops31h 52m

Ontario

dom. 1/18

10:57 am-4:05 pm

2 stops21h 08m

$885

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

jue. 1/8

10:10 pm-10:02 pm

2 stops31h 52m

Ontario

jue. 1/22

6:37 am-7:40 am

2 stops17h 03m

$885

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

jue. 1/8

10:10 pm-10:02 pm

2 stops31h 52m

Ontario

sáb. 1/24

8:43 am-11:50 am

2 stops19h 07m

$885

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

dom. 1/11

10:10 pm-10:02 pm

2 stops31h 52m

Ontario

dom. 1/18

10:57 am-4:05 pm

2 stops21h 08m

$886

FaroOntario

FAO - ONT

FAOONT

Faro

jue. 12/4

7:05 pm-4:14 pm

2 stops29h 09m

Ontario

lun. 12/8

7:00 am-6:55 pm

2 stops27h 55m

$951

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 27 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 $328). 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.

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 agosto 20, 2025.
Read through reviews of airlines operating flights from Portugal to Ontario, such as KLM. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,388 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Entertainment

7.1

Overall

7.8

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,388 reviews
KLM
7.8
Good
1,388 reviews

Crew

8.4

Food

7.3

Comfort

7.7

Entertainment

7.1

Overall

7.8

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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 20h 38m. Fly via United Airlines, 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 Faro - Ontario. You may also consider Lisbon Humberto Delgado - 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 $328). 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.

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Alternative routes for Portugal to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 agosto 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$744Average$879FlexibilityNo cancel feeOn-time75%

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