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 $346 for a one-way ticket and $818 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.

$376 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

Travelers love KAYAK

41 299 237 searches in the past 7 days on KAYAK

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Bundle and saveSave money when you bundle your flight + hotel.

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

Cheapest round-trip

$818

Multiple Airlines

Tue 7/28Thu 8/20

ONT - OPO • 2 stops

Cheapest one-way

$376

United Airlines

Sun 8/16

ONT - OPO • 2 stops

Nonstop flights

Not available

There are currently no direct flights between Ontario and Porto. You'll need at least 2 connections.

Insights

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

Tue, Jul 28 - Thu, Aug 20

6:30 am - 7:00 am

ONT

OPO

16h 30m

2 stops

11:50 am - 9:59 pm

OPO

ONT

18h 09m

2 stops

$818Multiple Airlines

Wed, Oct 14 - Wed, Nov 4

6:00 am - 9:45 am

ONT

OPO

19h 45m

2 stops

6:00 am - 8:20 pm

OPO

ONT

22h 20m

2 stops

$828United Airlines

Wed, Sep 23 - Sun, Nov 8

5:00 am - 7:00 am

ONT

OPO

18h 00m

2 stops

12:35 pm - 8:20 pm

OPO

ONT

39h 45m

2 stops

$851United Airlines

Tue, Aug 18 - Sat, Aug 29

7:00 am - 7:00 am

ONT

OPO

16h 00m

2 stops

11:20 am - 9:59 pm

OPO

ONT

18h 39m

2 stops

$878Multiple Airlines

Fri, Aug 14 - Thu, Aug 20

5:00 am - 7:10 am

ONT

OPO

18h 10m

2 stops

11:50 am - 9:59 pm

OPO

ONT

18h 09m

2 stops

$908Multiple Airlines

Sat, Oct 24 - Sun, Nov 1

6:00 am - 10:30 am

ONT

OPO

20h 30m

2 stops

6:00 am - 9:20 pm

OPO

ONT

22h 20m

2 stops

$964United Airlines

Thu, Sep 10 - Thu, Sep 24

5:45 am - 6:55 am

ONT

OPO

17h 10m

2 stops

6:00 am - 8:52 pm

OPO

ONT

22h 52m

2 stops

$965United Airlines

Sun, Jul 19 - Tue, Jul 28

5:45 am - 9:45 am

ONT

OPO

20h 00m

2 stops

9:00 am - 10:51 pm

OPO

ONT

21h 51m

2 stops

$966United Airlines

Thu, Sep 10 - Thu, Sep 24

5:45 am - 6:55 am

ONT

OPO

17h 10m

2 stops

6:00 am - 8:52 pm

OPO

ONT

22h 52m

2 stops

$969United Airlines

Wed, Sep 9 - Wed, Oct 28

5:45 am - 6:55 am

ONT

OPO

17h 10m

2 stops

6:00 am - 8:20 pm

OPO

ONT

21h 20m

2 stops

$981United 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 ($828) and Delta ($1,120).

Find deals

Cheapest flight	$376

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 $346 for a one-way ticket and $818 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

$346 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 ($828) and Delta ($1,120).

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 $346 for a one-way ticket and $818 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