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

$669 is the cheapest one-way deal found within the past few days, from Iberia. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $769 and $881, respectively.

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 $1,027). 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.

How recently were the Ontario to Porto flight deals updated?

The Ontario to Porto flight deals you see on this page were last updated on 5/3.

Can I find flights from Ontario to Porto for under $1,000 on Cheapflights?

Yes, there are multiple flights from Ontario to Porto for under $1,000. The cheapest flight booked recently is on United Airlines for just $987, but on average you can expect to pay $1,510.

Are there last-minute flights available from Ontario to Porto for under $1,500?

There are currently 1+ open flights from Ontario to Porto within the next 7 days for less than $1,500.

What does ONT to OPO mean?

Ontario Airport is ONT and Porto Airport is OPO. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

Can I find deals for flights from Ontario to Porto that include extra baggage allowance?

The amount of baggage you can bring on your Ontario to Porto flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Can I find deals on flights from Ontario to Porto with specific airlines?

Yes, Cheapflights allows you to browse and filter Ontario to Porto flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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.

Can I find deals for flights from Ontario to Porto that allow pets onboard?

Many airlines flying from Ontario to Porto offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Can I find deals on last-minute flights from Ontario to Porto?

Yes, you can often find last-minute deals on Ontario to Porto flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

Flights from Ontario, CA to Porto, Portugal from $669

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How far in advance should I book a flight from Ontario to Porto?

To save on the cost of your flight from Ontario to Porto, book at least 43 days before your planned departure. Booking around this time can save you about 82% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $759 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,357.

What is the cheapest month to fly from Ontario to Porto?

January is one of the best times of the year to fly to Porto from Ontario. Prices for January average $1,148 per person but you can even find prices for as low as $509. The most expensive prices can be found in the month of July. Opting for a January flight can save you 45% on your journey compared to booking in July

When is the cheapest time to fly from Ontario to Porto (ONT - OPO)?

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.

Cheap United Airlines flights from Ontario to Porto

Consider these cheap United Airlines flights we've found departing from Ontario to Porto. Be sure to come back soon if the deals available don't appeal to you at this time.

Sun 10/66:02 amONT - OPO

2 stops19h 43mUnited Airlines

Wed 11/66:00 amOPO - ONT

2 stops24h 05mUnited Airlines

Deal found 5/2$987

Sun 9/295:15 amONT - OPO

2 stops20h 30mUnited Airlines

Mon 10/146:00 amOPO - ONT

2 stops19h 43mUnited Airlines

Deal found 5/2$1,040

Sat 8/105:20 amONT - OPO

2 stops17h 35mUnited Airlines

Mon 8/196:00 amOPO - ONT

2 stops19h 56mUnited Airlines

Deal found 5/1$1,191

Wed 7/176:00 amONT - OPO

2 stops16h 55mUnited Airlines

Wed 7/249:00 amOPO - ONT

2 stops19h 48mUnited Airlines

Deal found 5/2$1,197

Mon 7/156:00 amONT - OPO

2 stops19h 45mUnited Airlines

Mon 7/299:00 amOPO - ONT

2 stops19h 48mUnited Airlines

Deal found 5/2$1,247

Sun 9/110:49 amONT - OPO

2 stops20h 56mUnited Airlines

Tue 9/106:00 amOPO - ONT

2 stops19h 56mUnited Airlines

Deal found 5/2$1,272

Sun 7/146:00 amONT - OPO

2 stops19h 45mUnited Airlines

Wed 7/249:00 amOPO - ONT

2 stops19h 48mUnited Airlines

Deal found 5/2$1,292

Thu 6/205:15 amONT - OPO

2 stops20h 30mUnited Airlines

Sun 10/2012:10 pmOPO - ONT

2 stops18h 46mUnited Airlines

Deal found 5/1$1,406

Thu 5/95:15 amONT - OPO

2 stops20h 30mUnited Airlines

Sun 5/1912:10 pmOPO - ONT

2 stops42h 54mUnited Airlines

Deal found 5/2$1,450

Cheap Iberia flights from Ontario to Porto

Browse through some of the cheapest Iberia flights traveling from Ontario to Porto. Ensure the flight price, dates, time, and airline match your criteria before you book.

Tue 6/112:44 pmONT - OPO

2 stops36h 56mIberia

Mon 6/174:35 pmOPO - ONT

2 stops39h 24mIberia

Deal found 5/2$1,405

Sun 6/162:44 pmONT - OPO

2 stops21h 11mIberia

Sun 6/3012:20 pmOPO - ONT

2 stops19h 39mIberia

Deal found 5/2$1,726

Wed 7/32:44 pmONT - OPO

2 stops17h 11mIberia

Sat 7/1312:20 pmOPO - ONT

2 stops19h 29mIberia

Deal found 5/2$2,003

Sun 10/132:52 pmONT - OPO

2 stops17h 03mIberia

Fri 10/1812:20 pmOPO - ONT

2 stops19h 06mIberia

Deal found 5/2$2,051

Sat 7/62:40 pmONT - OPO

2 stops17h 15mIberia

Tue 7/168:15 amOPO - ONT

2 stops18h 35mIberia

Deal found 5/3$2,179

Tue 5/1412:50 pmONT - OPO

2 stops34h 45mIberia

Tue 6/412:25 pmOPO - ONT

2 stops19h 30mIberia

Deal found 5/2$2,201

Wed 5/1512:50 pmONT - OPO

2 stops23h 05mIberia

Mon 6/38:35 pmOPO - ONT

2 stops31h 33mIberia

Deal found 5/2$2,301

Wed 7/312:40 pmONT - OPO

2 stops17h 15mIberia

Thu 8/88:15 amOPO - ONT

2 stops21h 48mIberia

Deal found 5/2$3,180

Tue 9/172:52 pmONT - OPO

2 stops17h 03mIberia

Tue 10/112:20 pmOPO - ONT

2 stops19h 06mIberia

Deal found 5/2$5,073

Cheap Ontario to Porto flights in May & June 2024

Listed are some of the best fares we've found on flights departing from Ontario to Porto in 2024. More deals are always being added, so be sure to check back regularly.

Sun 5/192:50 pmONT - OPO

2 stops32h 45mAmerican Airlines

Mon 5/2712:20 pmOPO - ONT

2 stops19h 36mAmerican Airlines

Deal found 5/2$1,190

Tue 6/112:44 pmONT - OPO

2 stops36h 56mIberia

Mon 6/174:35 pmOPO - ONT

2 stops39h 24mIberia

Deal found 5/2$1,405

Thu 6/205:15 amONT - OPO

2 stops20h 30mUnited Airlines

Sun 10/2012:10 pmOPO - ONT

2 stops18h 46mUnited Airlines

Deal found 5/1$1,406

Thu 6/68:10 amONT - OPO

2 stops23h 45mIberia

Mon 6/104:35 pmOPO - ONT

2 stops39h 24mIberia

Deal found 5/3$1,446

Thu 5/95:15 amONT - OPO

2 stops20h 30mUnited Airlines

Sun 5/1912:10 pmOPO - ONT

2 stops42h 54mUnited Airlines

Deal found 5/2$1,450

Sun 6/165:15 amONT - OPO

2 stops20h 30mUnited Airlines

Sun 6/309:00 amOPO - ONT

2 stops21h 48mUnited Airlines

Deal found 5/2$1,494

Sun 6/162:44 pmONT - OPO

2 stops21h 11mIberia

Sun 6/3012:20 pmOPO - ONT

2 stops19h 39mIberia

Deal found 5/3$1,726

Tue 5/1412:50 pmONT - OPO

2 stops34h 45mIberia

Tue 6/412:25 pmOPO - ONT

2 stops19h 30mIberia

Deal found 5/2$2,201

Wed 5/1512:50 pmONT - OPO

2 stops23h 05mIberia

Mon 6/38:35 pmOPO - ONT

2 stops31h 33mIberia

Deal found 5/2$2,301

Ontario to Porto 2024 flight deals

Listed are some of the best fares we've found on flights departing from Ontario to Porto in 2024. More deals are always being added, so be sure to check back regularly.

Thu 12/56:00 amONT - OPO

2 stops44h 30mKLM

Mon 12/911:45 amOPO - ONT

2 stops39h 37mKLM

Deal found 5/2$976

Sun 10/66:02 amONT - OPO

2 stops19h 43mUnited Airlines

Wed 11/66:00 amOPO - ONT

2 stops24h 05mUnited Airlines

Deal found 5/2$987

Sun 9/295:15 amONT - OPO

2 stops20h 30mUnited Airlines

Mon 10/146:00 amOPO - ONT

2 stops19h 43mUnited Airlines

Deal found 5/2$1,040

Sun 8/252:39 pmONT - OPO

2 stops32h 56mIberia

Mon 9/2312:20 pmOPO - ONT

2 stops19h 06mIberia

Deal found 5/3$1,094

Sun 5/192:50 pmONT - OPO

2 stops32h 45mAmerican Airlines

Mon 5/2712:20 pmOPO - ONT

2 stops19h 36mAmerican Airlines

Deal found 5/2$1,190

Sat 8/105:20 amONT - OPO

2 stops17h 35mUnited Airlines

Mon 8/196:00 amOPO - ONT

2 stops19h 56mUnited Airlines

Deal found 5/1$1,191

Wed 7/176:00 amONT - OPO

2 stops16h 55mUnited Airlines

Wed 7/249:00 amOPO - ONT

2 stops19h 48mUnited Airlines

Deal found 5/2$1,197

Sat 11/91:00 pmONT - OPO

2 stops18h 45mUnited Airlines

Sat 11/306:00 amOPO - ONT

2 stops24h 05mUnited Airlines

Deal found 5/2$1,236

Mon 7/156:00 amONT - OPO

2 stops19h 45mUnited Airlines

Mon 7/299:00 amOPO - ONT

2 stops19h 48mUnited Airlines

Deal found 5/2$1,247

Ontario to Porto flights leaving soon

Users seeking a last-minute flight from Ontario to Porto should consider booking one of these fares. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.

Thu 5/95:15 amONT - OPO

2 stops20h 30mUnited Airlines

Sun 5/1912:10 pmOPO - ONT

2 stops42h 54mUnited Airlines

Deal found 5/2$1,450

One-way flights to Porto from Ontario

Take a look at some of the best available options we've come across on one-way flights from Ontario to Porto. Those seeking round-trip flights from Ontario to Porto should utilize the search form at the the top of the page.

Mon 7/222:40 pmONT - OPO

2 stops17h 15mIberia

Deal found 5/2$669

Thu 7/252:47 pmONT - OPO

2 stops17h 08mAmerican Airlines

Deal found 5/2$769

Sun 10/612:58 amONT - OPO

3 stops30h 17mMultiple Airlines

Deal found 5/2$868

Sat 10/510:50 amONT - OPO

2 stops21h 05mIberia

Deal found 5/2$875

Sun 6/95:15 amONT - OPO

2 stops20h 30mUnited Airlines

Deal found 5/1$881

Mon 10/711:49 pmONT - OPO

2 stops27h 21mMultiple Airlines

Deal found 5/2$892

Sun 10/611:49 pmONT - OPO

2 stops26h 26mMultiple Airlines

Deal found 5/2$907

Sun 7/712:59 amONT - OPO

2 stops46h 36mAmerican Airlines

Deal found 5/2$914

Thu 10/311:49 pmONT - OPO

2 stops27h 06mMultiple Airlines

Deal found 5/2$957

Find flights from Ontario to Porto within your budget

Fly from

Fly to

Budget

$987 - $1,726

Route

Depart

Return

Price

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sun 10/6

2 stops19h 43m

Porto

Wed 11/6

2 stops24h 05m

$987

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sun 9/29

2 stops20h 30m

Porto

Mon 10/14

2 stops19h 43m

$1,040

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sun 5/19

2 stops32h 45m

Porto

Mon 5/27

2 stops19h 36m

$1,190

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sat 8/10

2 stops17h 35m

Porto

Mon 8/19

2 stops19h 56m

$1,191

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Wed 7/17

2 stops16h 55m

Porto

Wed 7/24

2 stops19h 48m

$1,197

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Mon 7/15

2 stops19h 45m

Porto

Mon 7/29

2 stops19h 48m

$1,247

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Mon 10/14

2 stops16h 50m

Porto

Mon 10/21

2 stops19h 06m

$1,378

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 6/11

2 stops36h 56m

Porto

Mon 6/17

2 stops39h 24m

$1,405

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sun 6/16

2 stops21h 11m

Porto

Sun 6/30

2 stops19h 39m

$1,726

Flights are sorted by cheapest first

Deals found on 5/2

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Porto

Read reviews from past customers who have flown United Airlines, Iberia and American Airlines from Ontario to Porto. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.9

Good

1,608 reviews

Check prices

Reviews

1 / 10

Departure was late. Plane much too small for an 11 hour flight. One bathroom was out of order in a completely full flight.

KLM

7.9

Good

1,608 reviews

KLM

7.9

Good

1,608 reviews

Check prices

Reviews

1 / 10

Departure was late. Plane much too small for an 11 hour flight. One bathroom was out of order in a completely full flight.

United Airlines

7.4

Good

11,143 reviews

KLM

7.9

Good

1,608 reviews

Check prices

Reviews

1 / 10

Departure was late. Plane much too small for an 11 hour flight. One bathroom was out of order in a completely full flight.

American Airlines

7.3

Good

14,767 reviews

KLM

7.9

Good

1,608 reviews

Check prices

Reviews

1 / 10

Departure was late. Plane much too small for an 11 hour flight. One bathroom was out of order in a completely full flight.

Iberia

7.1

Good

2,756 reviews

KLM

7.9

Good

1,608 reviews

Check prices

Reviews

1 / 10

Departure was late. Plane much too small for an 11 hour flight. One bathroom was out of order in a completely full flight.

British Airways

6.8

Okay

6,875 reviews

KLM

7.9

Good

1,608 reviews

Check prices

Reviews

1 / 10

Departure was late. Plane much too small for an 11 hour flight. One bathroom was out of order in a completely full flight.

Related info for your journey

Can I find flights from Ontario to Porto for under $1,000 on Cheapflights?
Yes, there are multiple flights from Ontario to Porto for under $1,000. The cheapest flight booked recently is on United Airlines for just $987, but on average you can expect to pay $1,510.
Are there last-minute flights available from Ontario to Porto for under $1,500?
There are currently 1+ open flights from Ontario to Porto within the next 7 days for less than $1,500.
What are the cheapest airlines to fly from Ontario to Porto one-way?
$669 is the cheapest one-way deal found within the past few days, from Iberia. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $769 and $881, respectively.
What does ONT to OPO mean?
Ontario Airport is ONT and Porto Airport is OPO. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.
Can I find deals for flights from Ontario to Porto that include extra baggage allowance?
The amount of baggage you can bring on your Ontario to Porto flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.
Can I find deals on flights from Ontario to Porto with specific airlines?
Yes, Cheapflights allows you to browse and filter Ontario to Porto flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.
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.
Can I find deals for flights from Ontario to Porto that allow pets onboard?
Many airlines flying from Ontario to Porto offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.
Can I find deals on last-minute flights from Ontario to Porto?
Yes, you can often find last-minute deals on Ontario to Porto flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.
How recently were the Ontario to Porto flight deals updated?
The Ontario to Porto flight deals you see on this page were last updated on 5/3.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Ontario to Porto
See prices for flight routes from nearby airports that may be better suited for you.

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Other flights to Porto
Explore flights to Porto departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 3, 2024.

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How does Cheapflights help users find flights from Ontario to Porto?

Cheapflights helps you search for flights from Ontario to Porto via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Porto?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ontario to Porto.

Can Cheapflights find flights from Ontario to Porto with no change fees?

Certainly. Search results for flights to Porto from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Ontario to Porto become cheaper?

Of course! You can now track prices for flights from Ontario to Porto and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Ontario (ONT) to Porto (OPO) from $669

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 7/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.

How far in advance should I book a flight from Ontario to Porto?

What is the cheapest month to fly from Ontario to Porto?

When is the cheapest time to fly from Ontario to Porto (ONT - OPO)?

Cheap United Airlines flights from Ontario to Porto

Consider these cheap United Airlines flights we've found departing from Ontario to Porto. Be sure to come back soon if the deals available don't appeal to you at this time.

Cheap Iberia flights from Ontario to Porto

Browse through some of the cheapest Iberia flights traveling from Ontario to Porto. Ensure the flight price, dates, time, and airline match your criteria before you book.

Cheap Ontario to Porto flights in May & June 2024

Find cheap flight options from Ontario to Porto specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Prices were last updated on May 3, 2024.

Listed are some of the best fares we've found on flights departing from Ontario to Porto in 2024. More deals are always being added, so be sure to check back regularly.

Ontario to Porto 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Porto in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 3, 2024.

Listed are some of the best fares we've found on flights departing from Ontario to Porto in 2024. More deals are always being added, so be sure to check back regularly.

Ontario to Porto flights leaving soon

Users seeking a last-minute flight from Ontario to Porto should consider booking one of these fares. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.

One-way flights to Porto from Ontario

Take a look at some of the best available options we've come across on one-way flights from Ontario to Porto. Those seeking round-trip flights from Ontario to Porto should utilize the search form at the the top of the page.

Find flights from Ontario to Porto within your budget

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 May 3, 2024.

Read reviews from past customers who have flown United Airlines, Iberia and American Airlines from Ontario to Porto. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

Can I find flights from Ontario to Porto for under $1,000 on Cheapflights?

Are there last-minute flights available from Ontario to Porto for under $1,500?

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

What does ONT to OPO mean?

Can I find deals for flights from Ontario to Porto that include extra baggage allowance?

Can I find deals on flights from Ontario to Porto with specific airlines?

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

How can I find direct flights from Ontario to Porto?

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

Can I find deals for flights from Ontario to Porto that allow pets onboard?

Can I find deals on last-minute flights from Ontario to Porto?

How recently were the Ontario to Porto flight deals updated?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to PortoSee prices for flight routes from nearby airports that may be better suited for you.

See prices for flight routes from nearby airports that may be better suited for you.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2024

Search flights from Ontario to Porto by cabin class

Find flights from Ontario to Porto, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Porto?

Why should you use Cheapflights to find cheap flight tickets from Ontario to Porto?

Can Cheapflights find flights from Ontario to Porto with no change fees?

Can Cheapflights notify me if prices for flights from Ontario to Porto become cheaper?

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Alternative routes for Ontario to Porto
See prices for flight routes from nearby airports that may be better suited for you.