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

$622 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 $691 and $750, respectively.

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 5/30.

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 $994). 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.

Can I find flights from Ontario to Porto for under $800 on Cheapflights?

Yes, there are multiple flights from Ontario to Porto for under $800. The cheapest flight booked recently is on United Airlines for just $783, but on average you can expect to pay $998.

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 $622

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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 12 days before your planned departure. Booking around this time can save you about 40% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $698 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,279.

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 $1,043 per person but you can even find prices for as low as $504. The most expensive prices can be found in the month of June. Opting for a January flight can save you 32% on your journey compared to booking in June

What is the cheapest time of day to fly from ONT to 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 Iberia flights from Ontario to Porto

Consider these cheap Iberia 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.

Mon 9/22:39 pmONT - OPO

2 stops17h 16mIberia

Wed 9/1112:25 pmOPO - ONT

2 stops19h 01mIberia

Deal found 5/30$837

Mon 9/22:39 pmONT - OPO

2 stops17h 16mIberia

Mon 9/912:20 pmOPO - ONT

2 stops19h 06mIberia

Deal found 5/30$937

Sun 10/132:52 pmONT - OPO

2 stops17h 03mIberia

Wed 10/2312:25 pmOPO - ONT

2 stops19h 01mIberia

Deal found 5/29$1,010

Sun 10/132:52 pmONT - OPO

2 stops17h 03mIberia

Wed 10/2312:25 pmOPO - ONT

2 stops19h 01mIberia

Deal found 5/30$1,012

Sun 10/132:52 pmONT - OPO

2 stops17h 03mIberia

Wed 10/2312:25 pmOPO - ONT

2 stops19h 01mIberia

Deal found 5/29$1,013

Sun 10/132:52 pmONT - OPO

2 stops17h 03mIberia

Wed 10/2312:25 pmOPO - ONT

2 stops19h 01mIberia

Deal found 5/30$1,015

Wed 10/1612:45 pmONT - OPO

2 stops23h 10mIberia

Wed 10/2312:25 pmOPO - ONT

2 stops19h 01mIberia

Deal found 5/29$1,068

Fri 9/272:52 pmONT - OPO

2 stops21h 03mIberia

Tue 10/812:25 pmOPO - ONT

2 stops19h 01mIberia

Deal found 5/28$1,071

Thu 9/262:52 pmONT - OPO

2 stops17h 03mIberia

Mon 10/78:35 pmOPO - ONT

2 stops34h 51mIberia

Deal found 5/28$1,078

Cheap United Airlines flights from Ontario to Porto

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

Tue 11/56:00 amONT - OPO

2 stops25h 25mUnited Airlines

Tue 12/106:00 amOPO - ONT

2 stops22h 17mUnited Airlines

Deal found 5/29$783

Sun 11/310:34 amONT - OPO

2 stops20h 51mUnited Airlines

Wed 11/66:00 amOPO - ONT

2 stops24h 21mUnited Airlines

Deal found 5/30$892

Thu 11/2110:34 amONT - OPO

2 stops20h 51mUnited Airlines

Tue 11/266:00 amOPO - ONT

2 stops24h 21mUnited Airlines

Deal found 5/29$987

Sun 10/135:15 amONT - OPO

2 stops20h 30mUnited Airlines

Wed 10/236:00 amOPO - ONT

2 stops19h 17mUnited Airlines

Deal found 5/30$1,035

Wed 10/96:00 amONT - OPO

2 stops19h 45mUnited Airlines

Wed 10/236:00 amOPO - ONT

2 stops22h 32mUnited Airlines

Deal found 5/29$1,100

Tue 9/245:15 amONT - OPO

2 stops20h 30mUnited Airlines

Mon 10/76:00 amOPO - ONT

2 stops19h 43mUnited Airlines

Deal found 5/28$1,171

Tue 8/275:15 amONT - OPO

2 stops20h 30mUnited Airlines

Fri 9/66:00 amOPO - ONT

2 stops23h 02mUnited Airlines

Deal found 5/29$1,235

Sat 9/285:15 amONT - OPO

2 stops20h 30mUnited Airlines

Tue 10/812:15 pmOPO - ONT

2 stops18h 41mUnited Airlines

Deal found 5/28$1,237

Wed 10/165:15 amONT - OPO

2 stops20h 30mUnited Airlines

Sun 10/276:00 amOPO - ONT

2 stops23h 21mUnited Airlines

Deal found 5/29$1,242

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.

Mon 6/246:00 amONT - OPO

2 stops40h 55mUnited Airlines

Mon 7/19:00 amOPO - ONT

2 stops21h 45mUnited Airlines

Deal found 5/30$1,245

Mon 6/105:15 amONT - OPO

2 stops17h 40mUnited Airlines

Tue 6/259:00 amOPO - ONT

2 stops19h 48mUnited Airlines

Deal found 5/30$1,275

Tue 6/185:15 amONT - OPO

2 stops20h 30mUnited Airlines

Tue 6/259:00 amOPO - ONT

2 stops19h 48mUnited Airlines

Deal found 5/29$1,276

Mon 6/1711:59 pmONT - OPO

2 stops35h 16mBritish Airways

Tue 7/28:25 pmOPO - ONT

2 stops35h 34mBritish Airways

Deal found 5/29$1,405

Mon 6/245:15 amONT - OPO

2 stops20h 30mUnited Airlines

Thu 7/49:00 amOPO - ONT

2 stops20h 11mUnited Airlines

Deal found 5/30$1,410

Thu 6/272:44 pmONT - OPO

2 stops17h 11mIberia

Thu 7/412:20 pmOPO - ONT

2 stops38h 30mIberia

Deal found 5/28$2,441

Wed 6/268:10 amONT - OPO

2 stops19h 30mIberia

Mon 7/112:20 pmOPO - ONT

2 stops19h 39mIberia

Deal found 5/30$3,454

Mon 6/2412:49 pmONT - OPO

3 stops19h 06mAmerican Airlines

Mon 7/18:15 amOPO - ONT

2 stops22h 44mAmerican Airlines

Deal found 5/30$3,845

Thu 6/272:44 pmONT - OPO

2 stops17h 11mIberia

Thu 7/48:15 amOPO - ONT

2 stops18h 42mIberia

Deal found 5/28$5,613

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.

Tue 11/56:00 amONT - OPO

2 stops25h 25mUnited Airlines

Tue 12/106:00 amOPO - ONT

2 stops22h 17mUnited Airlines

Deal found 5/29$783

Sun 8/41:21 pmONT - OPO

2 stops24h 54mDelta

Fri 9/136:30 amOPO - ONT

2 stops25h 21mDelta

Deal found 5/30$813

Mon 9/22:39 pmONT - OPO

2 stops17h 16mIberia

Wed 9/1112:25 pmOPO - ONT

2 stops19h 01mIberia

Deal found 5/30$837

Sun 11/310:34 amONT - OPO

2 stops20h 51mUnited Airlines

Wed 11/66:00 amOPO - ONT

2 stops24h 21mUnited Airlines

Deal found 5/30$892

Sun 8/42:47 pmONT - OPO

2 stops21h 08mAmerican Airlines

Fri 9/1312:25 pmOPO - ONT

2 stops39h 19mAmerican Airlines

Deal found 5/29$898

Mon 9/22:39 pmONT - OPO

2 stops17h 16mIberia

Mon 9/912:20 pmOPO - ONT

2 stops19h 06mIberia

Deal found 5/30$937

Sun 10/2710:34 amONT - OPO

2 stops21h 51mUnited Airlines

Sun 11/35:00 amOPO - ONT

2 stops23h 52mUnited Airlines

Deal found 5/30$948

Wed 11/2010:34 amONT - OPO

2 stops20h 51mUnited Airlines

Mon 12/26:00 amOPO - ONT

2 stops22h 25mUnited Airlines

Deal found 5/30$953

Tue 11/511:11 pmONT - OPO

2 stops24h 29mAmerican Airlines

Tue 12/108:20 amOPO - ONT

3 stops32h 21mAmerican Airlines

Deal found 5/29$975

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.

Tue 10/82:52 pmONT - OPO

2 stops17h 03mIberia

Deal found 5/29$622

Sat 11/1611:11 pmONT - OPO

2 stops36h 49mAmerican Airlines

Deal found 5/29$691

Wed 9/42:52 pmONT - OPO

2 stops21h 03mIberia

Deal found 5/29$720

Sat 11/166:00 amONT - OPO

3 stops25h 25mUnited Airlines

Deal found 5/29$750

Thu 6/275:20 amONT - OPO

2 stops20h 25mUnited Airlines

Deal found 5/29$813

Sun 6/166:25 pmONT - OPO

2 stops28h 30mUnited Airlines

Deal found 5/29$816

Thu 6/275:20 amONT - OPO

2 stops20h 25mUnited Airlines

Deal found 5/29$888

Fri 6/1411:59 pmONT - OPO

2 stops27h 16mMultiple Airlines

Deal found 5/28$1,377

Sun 6/305:20 amONT - OPO

2 stops17h 35mUnited Airlines

Deal found 5/29$1,452

Find flights from Ontario to Porto within your budget

Fly from

Fly to

Budget

$783 - $1,405

Route

Depart

Return

Price

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 11/5

2 stops25h 25m

Porto

Tue 12/10

2 stops22h 17m

$783

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sun 8/4

2 stops24h 54m

Porto

Fri 9/13

2 stops25h 21m

$813

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Mon 9/2

2 stops17h 16m

Porto

Wed 9/11

2 stops19h 01m

$837

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sun 11/3

2 stops20h 51m

Porto

Wed 11/6

2 stops24h 21m

$892

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sun 8/4

2 stops21h 08m

Porto

Fri 9/13

2 stops39h 19m

$898

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Mon 9/2

2 stops17h 16m

Porto

Mon 9/9

2 stops19h 06m

$937

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 11/5

2 stops24h 29m

Porto

Tue 12/10

3 stops32h 21m

$975

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Thu 11/21

2 stops20h 51m

Porto

Tue 11/26

2 stops24h 21m

$987

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Mon 6/17

2 stops35h 16m

Porto

Tue 7/2

2 stops35h 34m

$1,405

Flights are sorted by cheapest first

Deals found on 5/29

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

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

Reviews of airlines servicing Porto

Read reviews from past customers who have flown Iberia, United Airlines 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.

Delta

8.0

Very good

10,457 reviews

Check prices

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Delta

8.0

Very good

10,457 reviews

Delta

8.0

Very good

10,457 reviews

Check prices

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

United Airlines

7.4

Good

10,777 reviews

Delta

8.0

Very good

10,457 reviews

Check prices

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

American Airlines

7.3

Good

14,284 reviews

Delta

8.0

Very good

10,457 reviews

Check prices

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Iberia

7.1

Good

2,742 reviews

Delta

8.0

Very good

10,457 reviews

Check prices

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

British Airways

6.8

Okay

6,765 reviews

Delta

8.0

Very good

10,457 reviews

Check prices

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

Can I find flights from Ontario to Porto for under $800 on Cheapflights?
Yes, there are multiple flights from Ontario to Porto for under $800. The cheapest flight booked recently is on United Airlines for just $783, but on average you can expect to pay $998.
What are the cheapest airlines to fly from Ontario to Porto one-way?
$622 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 $691 and $750, 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 5/30.
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 $994). 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

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 30, 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 $622

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 10/8. 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?

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

Cheap Iberia flights from Ontario to Porto

Consider these cheap Iberia 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 United Airlines flights from Ontario to Porto

Browse through some of the cheapest United Airlines 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 2,784,634 searches. Prices were last updated on May 30, 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 2,784,634 searches. Data last updated May 30, 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.

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

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.

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 30, 2024.

Read reviews from past customers who have flown Iberia, United Airlines 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 $800 on Cheapflights?

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?

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

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.