$346 Find Cheap Flights from Ontario to Portugal - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Portugal departing on 12/28. 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.
1 adult
1 adult, Economy, 0 bags

Save 20% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$761
Porto
Porto2 stops$755
Lisbon
Lisbon2 stops$761
Porto
Porto2 stops$755

Book Cheap Ontario to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Portugal

Wed, Nov 4 - Wed, Nov 11
British Airways Logo
2:22 pm - 5:50 pm
ONT
-
OPO
19h 28m
2 stops
British Airways Logo
8:40 pm - 9:40 am
OPO
-
ONT
21h 00m
2 stops
$755British Airways
Wed, Oct 28 - Wed, Nov 4
United Airlines Logo
5:00 am - 6:55 am
ONT
-
LIS
18h 55m
2 stops
United Airlines Logo
5:00 am - 8:15 pm
LIS
-
ONT
23h 15m
2 stops
$761United Airlines
Wed, Nov 4 - Wed, Nov 11
British Airways Logo
2:22 pm - 5:50 pm
ONT
-
OPO
19h 28m
2 stops
British Airways Logo
8:40 pm - 9:40 am
OPO
-
ONT
21h 00m
2 stops
$761British Airways
Wed, Dec 2 - Wed, Jan 20
United Airlines Logo
5:00 am - 6:55 am
ONT
-
LIS
17h 55m
2 stops
United Airlines Logo
5:00 am - 5:47 pm
LIS
-
ONT
20h 47m
2 stops
$762United Airlines
Wed, Dec 9 - Wed, Jan 13
United Airlines Logo
5:00 am - 6:55 am
ONT
-
LIS
17h 55m
2 stops
United Airlines Logo
5:00 am - 5:47 pm
LIS
-
ONT
20h 47m
2 stops
$762United Airlines
Tue, Dec 29 - Thu, Jan 7
Delta Logo
10:59 pm - 10:35 am
ONT
-
OPO
27h 36m
2 stops
Delta Logo
5:00 am - 11:48 pm
OPO
-
ONT
26h 48m
2 stops
$781Delta
Tue, Dec 29 - Wed, Jan 6
Delta Logo
10:59 pm - 10:35 am
ONT
-
OPO
27h 36m
2 stops
Delta Logo
11:15 am - 10:43 pm
OPO
-
ONT
43h 28m
2 stops
$781Delta
Wed, Dec 30 - Thu, Jan 7
Delta Logo
6:00 am - 10:35 am
ONT
-
OPO
44h 35m
2 stops
Delta Logo
5:00 am - 11:48 pm
OPO
-
ONT
26h 48m
2 stops
$783Delta
Mon, Nov 2 - Wed, Nov 18
Multiple Airlines Logo
9:25 am - 9:20 am
ONT
-
LIS
15h 55m
2 stops
Multiple Airlines Logo
11:20 am - 8:51 pm
LIS
-
ONT
17h 31m
2 stops
$889Multiple Airlines
Tue, Nov 10 - Tue, Nov 17
Multiple Airlines Logo
9:25 am - 9:20 am
ONT
-
LIS
15h 55m
2 stops
Multiple Airlines Logo
11:20 am - 8:51 pm
LIS
-
ONT
17h 31m
2 stops
$889Multiple Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Portugal flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Portugal is December, when tickets cost $0 (return) on average. On the other hand, the most expensive months are April and June, when the average cost of round-trip tickets is $1,494 and $1,165 respectively.

Find deals

Good to know

Low season

October

Cheapest flight

$346
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from Ontario to Porto

FAQs - booking Portugal flights

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

    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 Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Portugal 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 Portugal?

    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 from Ontario to Portugal with an airline and back with another airline.

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

    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 from Ontario to Portugal 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 Portugal

Information on your arrival and departure airports

Ontario (ONT)