What is the cheapest flight from Ontario to Porto?

In the last 3 days, the lowest price for a flight from Ontario to Porto was $511 for a one-way ticket and $542 for a round-trip. Visit our flight page for the latest deals!>/a>

Do I need a passport to fly between Ontario and Porto?

A passport is required to fly from Ontario to Porto. Visit our flight page for the latest deals!>/a>

Which airports will I be using when flying from Ontario to Porto?

When flying out of Ontario you will be using Ontario. You will be landing at Porto, also known as Porto. Visit our flight page for the latest deals!>/a>

Which aircraft models fly most regularly from Ontario to Porto?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Ontario to Porto?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Porto. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Porto?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Ontario is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Ontario to Porto?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Ontario with another airline. Booking your flights between Ontario and OPO can sometimes prove cheaper using this method. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Porto?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

What are the most popular airlines flying to Porto?

The most popular airline among KAYAK users flying to Porto is TAP AIR PORTUGAL, followed by United Airlines and Delta.

$511 CHEAP FLIGHTS from Ontario to Porto (ONT - OPO)

ONT - OPO

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

...and more

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$542

United Airlines

Sun 4/19Sat 5/9

ONT - OPO • 2 stops

Cheapest one-way

$511

Multiple Airlines

Sat 6/20

ONT - OPO • 3 stops

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Porto!

Flight Deals

Cheap Flights from Ontario to Porto (ONT-OPO)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Ontario to Porto

Sun, Apr 19 - Sat, May 9

7:00 am - 9:45 am

ONT

OPO

18h 45m

2 stops

6:00 am - 6:01 pm

OPO

ONT

20h 01m

2 stops

$542United Airlines

Wed, Mar 4 - Wed, Mar 11

10:56 am - 4:45 pm

ONT

OPO

21h 49m

2 stops

6:35 pm - 10:07 pm

OPO

ONT

34h 32m

2 stops

$582British Airways

Mon, Apr 20 - Sun, Apr 26

7:00 am - 9:45 am

ONT

OPO

18h 45m

2 stops

6:00 am - 8:36 pm

OPO

ONT

22h 36m

2 stops

$671United Airlines

Sat, Feb 21 - Sat, Mar 7

6:00 am - 9:30 am

ONT

OPO

19h 30m

2 stops

6:00 am - 10:57 pm

OPO

ONT

24h 57m

2 stops

$693United Airlines

Tue, May 5 - Tue, May 12

7:00 am - 9:45 am

ONT

OPO

18h 45m

2 stops

6:00 am - 8:36 pm

OPO

ONT

22h 36m

2 stops

$730United Airlines

Mon, Mar 2 - Mon, Mar 16

10:56 am - 11:45 am

ONT

OPO

16h 49m

2 stops

8:20 am - 9:24 pm

OPO

ONT

20h 04m

2 stops

$874American Airlines

Sun, Mar 15 - Sun, Mar 22

11:59 pm - 9:30 am

ONT

OPO

26h 31m

2 stops

6:00 am - 10:57 pm

OPO

ONT

23h 57m

2 stops

$878United Airlines

Thu, Jul 23 - Mon, Jul 27

11:59 pm - 7:00 pm

ONT

OPO

35h 01m

2 stops

12:35 pm - 10:09 pm

OPO

ONT

41h 34m

2 stops

$988Multiple Airlines

Sat, May 16 - Sun, May 24

7:00 am - 11:10 am

ONT

OPO

20h 10m

2 stops

9:00 am - 10:28 pm

OPO

ONT

21h 28m

2 stops

$1,008United Airlines

Fri, May 15 - Sun, May 24

1:40 pm - 9:45 am

ONT

OPO

36h 05m

2 stops

9:00 am - 10:28 pm

OPO

ONT

21h 28m

2 stops

$1,068United Airlines

Booking Insights

KAYAK's insights & trends for Ontario to Porto flights

Get data-powered insights and trends into flights from Ontario to Porto to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Ontario to Porto?

In the past 3 days, the cheapest round-trip tickets from Ontario to Porto were found on United Airlines ($542) and British Airways ($582).

Find deals

Cheapest flight	$511

Flight from Ontario to Porto

When to book flights from Ontario to Porto

Are your dates flexible? Find out the best times to travel from Ontario to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What is the cheapest flight from Ontario to Porto?
In the last 3 days, the lowest price for a flight from Ontario to Porto was $511 for a one-way ticket and $542 for a round-trip.
Do I need a passport to fly between Ontario and Porto?
A passport is required to fly from Ontario to Porto.
Which airports will I be using when flying from Ontario to Porto?
When flying out of Ontario you will be using Ontario. You will be landing at Porto, also known as Porto.
Which aircraft models fly most regularly from Ontario to Porto?
We unfortunately don’t have that data for this specific route.
How does KAYAK find such low prices on flights from Ontario to Porto?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Porto.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Porto?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Ontario to Porto?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Ontario with another airline. Booking your flights between Ontario and OPO can sometimes prove cheaper using this method.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Porto?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Ontario to Porto

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Information on your arrival and departure airports

Ontario (ONT)

Porto (OPO)

ONT - OPO

$511 Find Cheap Flights from Ontario to Porto

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

Everything you should know

Cheap Flights from Ontario to Porto (ONT-OPO)

Recent round-trip flight deals from Ontario to Porto

Recent one-way flight deals from Ontario to Porto

Recent last minute flight deals from Ontario to Porto

KAYAK's insights & trends for Ontario to Porto flights

Get data-powered insights and trends into flights from Ontario to Porto to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Ontario to Porto?

In the past 3 days, the cheapest round-trip tickets from Ontario to Porto were found on United Airlines ($542) and British Airways ($582).

Good to know

When to book flights from Ontario to Porto

FAQs for booking flights from Ontario to Porto

What is the cheapest flight from Ontario to Porto?

In the last 3 days, the lowest price for a flight from Ontario to Porto was $511 for a one-way ticket and $542 for a round-trip.

Do I need a passport to fly between Ontario and Porto?

A passport is required to fly from Ontario to Porto.

Which airports will I be using when flying from Ontario to Porto?

When flying out of Ontario you will be using Ontario. You will be landing at Porto, also known as Porto.

Which aircraft models fly most regularly from Ontario to Porto?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Ontario to Porto?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Porto.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Porto?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Ontario to Porto?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Ontario with another airline. Booking your flights between Ontario and OPO can sometimes prove cheaper using this method.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Porto?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Ontario to Porto

Information on your arrival and departure airports

Cabin class types available on flights from Ontario to Porto

Complete your trip to Porto with a hotel stay or car rental

Find direct flights to and from Ontario and Porto

Flights to other popular destinations

Flights from domestic origins to Porto

Choose which airport to fly into in Porto