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Portugal

$442+ Cheap flights from Ontario (ONT) to Portugal

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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIS
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheap flight deals from Ontario to Portugal

Keep the following information in mind while searching for Ontario to Portugal flight deals. Data was last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$808
(United Airlines)

One-way from

$442
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$772
Provider with most accurate pricing for Los Angeles-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Lisbon Humberto Delgado flights.
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From Ontario to Portugal
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One-way flight from Ontario to Portugal
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Highest demand for flights based on searches. 19% potential increase in price ($224 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($30 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 Ontario to Portugal

Cheapest flights from Ontario to Portugal
Explore the most affordable flight options available from Ontario to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Air Canada deal was found by Cheapflights users on 3/27. 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.
Tue 10/76:00 amONT - LIS
2 stops19h 20mAir Canada
Tue 11/411:00 amLIS - ONT
2 stops43h 35mAir Canada
Deal found 3/27$703
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 5/63:10 pmONT - LIS
2 stops33h 10mUnited Airlines
Tue 5/1311:25 amLIS - ONT
2 stops33h 13mUnited Airlines
Deal found 3/27$808
This Delta deal was found by Cheapflights users on 3/27. 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.
Wed 9/247:00 amONT - LIS
2 stops17h 00mDelta
Fri 10/310:00 amLIS - ONT
2 stops20h 29mDelta
Deal found 3/27$816
This United Airlines deal was found by Cheapflights users on 3/27. 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 9/105:45 amONT - OPO
2 stops19h 40mUnited Airlines
Thu 9/2512:10 pmOPO - ONT
2 stops18h 43mUnited Airlines
Deal found 3/27$860
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Sun 10/193:00 pmONT - LIS
2 stops17h 05mMultiple Airlines
Sun 10/2610:45 amLIS - ONT
2 stops20h 17mMultiple Airlines
Deal found 3/27$864
This Air Canada deal was found by Cheapflights users on 3/27. 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.
Tue 6/246:41 pmONT - OPO
2 stops30h 39mMultiple Airlines
Thu 7/2412:10 pmOPO - ONT
2 stops37h 15mMultiple Airlines
Deal found 3/27$903
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Sun 5/111:45 pmONT - FAO
2 stops40h 45mUnited Airlines
Sun 5/183:25 pmFAO - ONT
2 stops37h 09mUnited Airlines
Deal found 3/26$916
This United Airlines deal was found by Cheapflights users on 3/25. 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 5/106:00 amONT - FAO
2 stops22h 35mMultiple Airlines
Sat 5/1711:40 amFAO - ONT
2 stops32h 58mMultiple Airlines
Deal found 3/25$959
This Ovago deal was found by Cheapflights users on 3/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/244:35 pmONT - LIS
2 stops22h 25mBritish Airways
Tue 4/297:15 amLIS - ONT
2 stops22h 43mBritish Airways
Deal found 3/27$979
This Iberia deal was found by Cheapflights users on 3/27. 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.
Sat 9/2010:54 amONT - LIS
2 stops23h 31mIberia
Sun 9/286:35 amLIS - ONT
2 stops25h 01mIberia
Deal found 3/27$992
This United Airlines deal was found by Cheapflights users on 3/25. 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.
Tue 7/17:00 amONT - PDL
2 stops18h 40mUnited Airlines
Tue 7/1511:00 amPDL - ONT
2 stops18h 11mUnited Airlines
Deal found 3/25$1,002
This Iberia deal was found by Cheapflights users on 3/27. 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.
Fri 8/12:39 pmONT - OPO
2 stops17h 16mIberia
Mon 8/1812:20 pmOPO - ONT
2 stops19h 09mIberia
Deal found 3/27$1,004

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Portugal 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 28, 2025.
Use the filters below to find and compare flights from Ontario to Portugal that are best for you.

Fly from

Ontario

Fly to

Portugal

Route

Depart

Return

Price

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 5/6

3:10 pm-8:20 am

2 stops33h 10m

Lisbon Humberto Delgado

Tue 5/13

11:25 am-12:38 pm

2 stops33h 13m

$808

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 9/23

10:59 pm-8:00 am

2 stops25h 01m

Lisbon Humberto Delgado

Wed 10/1

10:00 am-10:29 pm

2 stops20h 29m

$816

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Wed 9/10

5:45 am-9:25 am

2 stops19h 40m

Porto

Thu 9/25

12:10 pm-10:53 pm

2 stops18h 43m

$860

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 6/24

6:41 pm-9:20 am

2 stops30h 39m

Porto

Thu 7/24

12:10 pm-5:25 pm

2 stops37h 15m

$903

OntarioFaro

ONT - FAO

ONTFAO

Ontario

Sun 5/11

1:45 pm-2:30 pm

2 stops40h 45m

Faro

Sun 5/18

3:25 pm-8:34 pm

2 stops37h 09m

$916

OntarioFaro

ONT - FAO

ONTFAO

Ontario

Sat 5/10

6:00 am-12:35 pm

2 stops22h 35m

Faro

Sat 5/17

11:40 am-12:38 pm

2 stops32h 58m

$959

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Thu 4/24

4:35 pm-11:00 pm

2 stops22h 25m

Lisbon Humberto Delgado

Tue 4/29

7:15 am-9:58 pm

2 stops22h 43m

$979

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sat 9/20

10:54 am-6:25 pm

2 stops23h 31m

Lisbon Humberto Delgado

Sun 9/28

6:35 am-11:36 pm

2 stops25h 01m

$992

OntarioPonta Delgada

ONT - PDL

ONTPDL

Ontario

Tue 7/1

7:00 am-8:40 am

2 stops18h 40m

Ponta Delgada Nordela

Tue 7/15

11:00 am-10:11 pm

2 stops18h 11m

$1,002

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Fri 8/1

2:39 pm-3:55 pm

2 stops17h 16m

Porto

Mon 8/18

12:20 pm-11:29 pm

2 stops19h 09m

$1,004

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 33 results
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Best time to book a flight from Ontario to Portugal

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

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Portugal (average of $612). Flying from Ontario to Portugal in June is currently the most expensive (average of $1,213). 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.

What is the cheapest time of day to fly from ONT to PT?

Find hourly flight availability from Ontario to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Portugal as you normally would.

Rainfall in Portugal by month

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

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

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

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated March 28, 2025.
Read through reviews of airlines operating flights from Ontario to Portugal, such as Delta, KLM and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,896 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,603 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
8,986 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Comfort

8.0

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Portugal from Ontario.

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

    $487 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on American Airlines and Iberia, with prices starting from $617 and $621, respectively.

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

    When deciding which route to take from Ontario to Portugal consider Ontario - Lisbon Humberto Delgado, Ontario - Porto or Ontario - Faro as they are the most popular.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Ontario to Portugal (average of $612). Flying from Ontario to Portugal in June is currently the most expensive (average of $1,213). 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 Ontario to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Ontario to Portugal

Discover the top 4 airlines that operate flights from Ontario to Portugal. 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 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$691Average$1,247FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$708Average$1,175FlexibilityNo cancel feeOn-time69%
DeltaCheapest$749Average$1,242FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$782Average$1,123FlexibilityNo cancel feeOn-time71%
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