$757+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Ontario to Porto with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 January 2, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $758 (United Airlines) |
One-way from | $757 (United Airlines) |
Find flight deals from Ontario to Porto
Cheapest flights from Ontario to PortoExplore 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 January 2, 2025.
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 January 2, 2025.
This United Airlines deal was found by Cheapflights users on 1/1. 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.
This Cheapflightsfares deal was found by Cheapflights users on 1/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 1/1. 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.
This KAYAK deal was found by Cheapflights users on 1/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This British Airways deal was found by Cheapflights users on 1/1. 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.
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 January 2, 2025.
Fly from
Fly to
Route
Depart
Return
Price
OntarioPorto
ONT - OPO
ONTOPO
Ontario
Sun 3/9
1:40 pm-3:10 pm
2 stops18h 30m
Porto
Wed 3/19
6:00 am-8:57 pm
2 stops21h 57m
OntarioPorto
ONT - OPO
ONTOPO
Ontario
Sun 2/2
2:44 pm-4:00 pm
2 stops17h 16m
Porto
Sun 2/16
8:20 am-11:53 pm
2 stops23h 33m
OntarioPorto
ONT - OPO
ONTOPO
Ontario
Wed 5/14
3:00 pm-6:40 pm
2 stops19h 40m
Porto
Fri 5/16
8:15 am-11:35 pm
2 stops23h 20m
OntarioPorto
ONT - OPO
ONTOPO
Ontario
Tue 4/1
10:57 am-11:40 am
2 stops16h 43m
Porto
Wed 4/9
12:20 pm-11:51 pm
2 stops19h 31m
OntarioPorto
ONT - OPO
ONTOPO
Ontario
Wed 4/30
6:05 am-9:45 am
2 stops19h 40m
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 January.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Porto flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.
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 $1,080). 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 January 2, 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 January 2, 2025.
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.