Question 1

What is the cheapest flight from Ontario to Porto?

Accepted Answer

In the last 3 days, the lowest price for a flight from Ontario to Porto was $443 for a one-way ticket and $566 for a round-trip. <a href='/flight-routes/Ontario-ONT/Porto-OPO'>Visit our flight page for the latest deals!>/a>

Question 2

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

Accepted Answer

A passport is required to fly from Ontario to Porto. <a href='/flight-routes/Ontario-ONT/Porto-OPO'>Visit our flight page for the latest deals!>/a>

Question 3

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

Accepted Answer

When flying out of Ontario you will be using Ontario. You will be landing at Porto, also known as Porto. <a href='/flight-routes/Ontario-ONT/Porto-OPO'>Visit our flight page for the latest deals!>/a>

Question 4

Which aircraft models fly most regularly from Ontario to Porto?

Accepted Answer

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

Question 5

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

Accepted Answer

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. <a href='/flight-routes/Ontario-ONT/Porto-OPO'>Visit our flight page for the latest deals!>/a>

Question 6

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

Accepted Answer

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. <a href='/flight-routes/Ontario-ONT/Porto-OPO'>Visit our flight page for the latest deals!>/a>

Question 7

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

Accepted Answer

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. <a href='/flight-routes/Ontario-ONT/Porto-OPO'>Visit our flight page for the latest deals!>/a>

Question 8

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

Accepted Answer

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. <a href='/flight-routes/Ontario-ONT/Porto-OPO'>Visit our flight page for the latest deals!>/a>

Question 9

Which airlines provide the cheapest flights from Ontario to Porto?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Ontario to Porto were found on Delta ($566) and United Airlines ($643).

Question 10

Which airlines provide the cheapest flights from Ontario to Porto?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Ontario to Porto were found on Delta ($566) and United Airlines ($643).

Question 11

What are the most popular airlines flying to Porto?

Accepted Answer

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

ONT - OPO

$443 Find Cheap Flights from Ontario to Porto

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

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

Everything you should know

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 Delta ($566) and United Airlines ($643).

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 $443 for a one-way ticket and $566 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