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$497+ Cheap flights from Ontario (ONT) to Porto (OPO)

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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OPO
Feb 9 — Feb 161
Sun 2/9
Sun 2/16
1 adult, Economy
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Cheap flight deals from Ontario to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 4, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$841
(United Airlines)

One-way from

$497
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$762
Provider with most accurate pricing for Ontario-Porto flight deals.
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Provider most trusted by Cheapflights users for Ontario-Porto flights.
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From Ontario to Porto
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One-way flight from Ontario to Porto
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Highest demand for flights based on searches. 15% potential increase in price ($180 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($23 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 Ontario to Porto

Cheapest flights from Ontario to Porto
Explore the most affordable flight options available from Ontario to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2025.

This United Airlines deal was found by Cheapflights users on 2/3. 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.
Sun 3/306:05 amONT - OPO
2 stops19h 40mUnited Airlines
Tue 4/86:00 amOPO - ONT
2 stops22h 42mUnited Airlines
Deal found 2/3$841
This Delta deal was found by Cheapflights users on 2/3. 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.
Tue 2/186:00 amONT - OPO
2 stops20h 35mDelta
Tue 2/256:00 amOPO - ONT
2 stops24h 52mDelta
Deal found 2/3$1,023
This United Airlines deal was found by Cheapflights users on 2/3. 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.
Tue 2/186:00 amONT - OPO
2 stops25h 15mMultiple Airlines
Tue 2/256:00 amOPO - ONT
3 stops22h 52mMultiple Airlines
Deal found 2/3$1,033
This Iberia deal was found by Cheapflights users on 2/3. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2310:54 amONT - OPO
2 stops16h 46mIberia
Tue 10/712:20 pmOPO - ONT
2 stops19h 42mIberia
Deal found 2/3$1,248
This Air Canada deal was found by Cheapflights users on 2/2. 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.
Sat 6/146:00 amONT - OPO
2 stops19h 30mAir Canada
Sun 6/2212:15 pmOPO - ONT
2 stops37h 10mAir Canada
Deal found 2/2$1,716
This Booking.com deal was found by Cheapflights users on 2/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/810:54 amONT - OPO
2 stops16h 46mBritish Airways
Wed 4/1612:20 pmOPO - ONT
2 stops19h 30mBritish Airways
Deal found 2/2$2,119

Find flights from Ontario to Porto within your budget

Customize your flight search to find flights from Ontario to Porto 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 4, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sun 3/30

6:05 am-9:45 am

2 stops19h 40m

Porto

Tue 4/8

6:00 am-8:42 pm

2 stops22h 42m

$841

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 2/18

6:00 am-10:35 am

2 stops20h 35m

Porto

Tue 2/25

6:00 am-10:52 pm

2 stops24h 52m

$1,023

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 2/18

6:00 am-3:15 pm

2 stops25h 15m

Porto

Tue 2/25

6:00 am-8:52 pm

3 stops22h 52m

$1,033

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Fri 3/28

2:54 pm-10:40 am

2 stops36h 46m

Porto

Mon 4/7

12:20 pm-11:51 pm

2 stops19h 31m

$1,325

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sat 6/14

6:00 am-9:30 am

2 stops19h 30m

Porto

Sun 6/22

12:15 pm-5:25 pm

2 stops37h 10m

$1,716

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 4/8

10:54 am-11:40 am

2 stops16h 46m

Porto

Wed 4/16

12:20 pm-11:50 pm

2 stops19h 30m

$2,119

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Wed 7/30

6:00 am-8:25 pm

3 stops30h 25m

$497

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Mon 2/24

7:40 pm-3:15 pm

2 stops35h 35m

$682

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sun 4/27

2:44 pm-3:55 pm

2 stops17h 11m

$770

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Fri 7/4

6:32 pm-9:30 am

2 stops30h 58m

$813

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 12 results
1
2

Compare providers for flights from Ontario to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Porto in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Porto

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

Travel insights for flights from Ontario to Porto

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

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Porto (average of $523). Flying from Ontario to Porto in June is currently the most expensive (average of $1,089). 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 OPO?

Find hourly flight availability from Ontario to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 4, 2025.

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

Rainfall in Porto by month

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

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

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

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated February 4, 2025.
Delta
8.0
Very good
8,408 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Entertainment

7.9

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
8,408 reviews
Delta
8.0
Very good
8,408 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Entertainment

7.9

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
1,334 reviews
Delta
8.0
Very good
8,408 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Entertainment

7.9

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
8,887 reviews
Delta
8.0
Very good
8,408 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Entertainment

7.9

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
8,667 reviews
Delta
8.0
Very good
8,408 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Entertainment

7.9

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.

Iberia
7.0
Good
2,643 reviews
Delta
8.0
Very good
8,408 reviews

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Comfort

8.0

Entertainment

7.9

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 Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    $682 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 Iberia and Air Canada, with prices starting from $770 and $813, respectively.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Ontario to Porto (average of $523). Flying from Ontario to Porto in June is currently the most expensive (average of $1,089). 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

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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