Skyscanner home

Cheap flight tickets from Ontario International to Lisbon

Compare Ontario International to Lisbon flight deals

Find the cheapest month or even day of the year to fly to Lisbon

Book the best Lisbon fare with no extra fees

Flight deals from Ontario International to Lisbon

Looking for a cheap last-minute deal or the best return flight from Ontario International to Lisbon? Find the lowest prices on one-way and return tickets right here.
Lisbon.RM2,582 per passenger.Departing Sat, 28 Feb, returning Sat, 7 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Sat, 28 Feb, arriving in Lisbon.Inbound indirect flight with Delta, departs from Lisbon on Sat, 7 Mar, arriving in Ontario International.Price includes taxes and charges.From RM2,582, select.
Lisbon.RM2,818 per passenger.Departing Fri, 10 Apr, returning Fri, 17 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Fri, 10 Apr, arriving in Lisbon.Inbound indirect flight with Delta, departs from Lisbon on Fri, 17 Apr, arriving in Ontario International.Price includes taxes and charges.From RM2,818, select.
Lisbon.RM3,313 per passenger.Departing Sun, 1 Mar, returning Tue, 17 Mar.Return flight with British Airways and Iberia.Outbound indirect flight with British Airways, departs from Ontario International on Sun, 1 Mar, arriving in Lisbon.Inbound indirect flight with Iberia, departs from Lisbon on Tue, 17 Mar, arriving in Ontario International.Price includes taxes and charges.From RM3,313, select.
Lisbon.RM3,496 per passenger.Departing Tue, 26 May, returning Mon, 8 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Tue, 26 May, arriving in Lisbon.Inbound indirect flight with Delta, departs from Lisbon on Mon, 8 Jun, arriving in Ontario International.Price includes taxes and charges.From RM3,496, select.
Lisbon.RM3,777 per passenger.Departing Tue, 8 Sep, returning Mon, 14 Sep.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Ontario International on Tue, 8 Sep, arriving in Lisbon.Inbound indirect flight with Turkish Airlines, departs from Lisbon on Mon, 14 Sep, arriving in Ontario International.Price includes taxes and charges.From RM3,777, select.
Lisbon.RM3,937 per passenger.Departing Mon, 31 Aug, returning Mon, 7 Sep.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Ontario International on Mon, 31 Aug, arriving in Lisbon.Inbound indirect flight with Turkish Airlines, departs from Lisbon on Mon, 7 Sep, arriving in Ontario International.Price includes taxes and charges.From RM3,937, select.
Lisbon.RM4,636 per passenger.Departing Sat, 28 Mar, returning Thu, 2 Apr.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Ontario International on Sat, 28 Mar, arriving in Lisbon.Inbound indirect flight with British Airways, departs from Lisbon on Thu, 2 Apr, arriving in Ontario International.Price includes taxes and charges.From RM4,636, select.
Lisbon.RM4,865 per passenger.Departing Thu, 10 Sep, returning Thu, 1 Oct.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Ontario International on Thu, 10 Sep, arriving in Lisbon.Inbound indirect flight with Turkish Airlines, departs from Lisbon on Thu, 1 Oct, arriving in Ontario International.Price includes taxes and charges.From RM4,865, select.

Find the cheapest month to fly from Ontario International to Lisbon

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Lisbon flights are currently cheapest in April.
Feb
Find prices
Mar
from RM3,313
Apr
from RM2,818
May
from RM5,820
Jun
from RM5,813
Jul
from RM6,971
Aug
Find prices
Sep
from RM3,777
Oct
from RM5,533
Nov
Find prices
Dec
Find prices
Jan
Find prices

Ontario International to Lisbon: Alternative routes

Compare routes from Ontario International to Lisbon below. You may find an airport to fly into that's cheaper, faster, or easier than Lisbon.

Lisbon

8km from central Lisbon
ClosestCheapest
from RM2,582
Search flights

Cascais Municipal Aerodrome

19km from central Lisbon
Search flights

Ontario to Lisbon: Flight information

The things to know before you go.
Cheapest flight foundRM2,582
Cheapest month to flyFebruary

Finding cheap flights from Ontario International to Lisbon: Frequently asked questions

The best price we found for a return flight from Ontario International to Lisbon is RM2,582. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Ontario International to Lisbon. But we found flights with one or more stops from RM2,582.
As of February 2026, there are no flights flying from Ontario International to Lisbon.
The cheapest month to fly from Ontario International to Lisbon is usually February.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Lisbon Airport on Saturday, 28 February 2026.
No airlines currently offer direct flights between Ontario International Airport and Lisbon Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Lisbon but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Lisbon is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to Lisbon.

Travelling from Ontario International Airport (ONT) to Lisbon Portela Airport (LIS): what you need to know

  • Lisbon is seven hours ahead of Ontario and is in the UTC+0 timezone.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for hassle-free flying. Show up at the airport on time to board your ONT to LIS flight.

  • Be prepared for longer lines in popular months such as August. Arriving up to four hours in advance for an international flight and two hours for a domestic departure is a good idea.

How to find the cheapest flights from Ontario International Airport (ONT) to Lisbon Portela Airport (LIS)

  • The cheapest price we've found for a one-way Ontario International Airport to Lisbon Portela Airport flight is RM1,101. A return ticket right now is RM2,582. Depending on the availability and when you book, these fares may change.

  • To pick up cheap tickets from ONT to LIS, book early. Airlines typically offer the most competitive fares when flights are first released.

  • Getting cheap flights from Ontario International Airport to Lisbon Portela Airport is easy if you're flexible with your trip dates. Use the 'Whole month' function to see the best prices across each month and bag a great deal.

  • Finding cheap flights from ONT to LIS is a piece of cake with Price Alerts. Simply set up one of these automatic alerts and we'll let you know when a lower fare pops up.

  • Find the perfect flight for you by using the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Ontario International Airport to Lisbon Portela Airport, use the 'Sort by' tool. You can also filter results by airline, arrival and departure times, and journey duration.

Handy information about Ontario International Airport (ONT)

  • ONT is located at 2900 E. Airport Drive.

  • Ontario International Airport has an excellent on-time performance, making delays less likely. Departures from ONT land on schedule 83.6% of the time.

  • Central Ontario to Ontario International Airport is around 6 kilometres. Depending on traffic, it'll take you about 10 minutes to get there if you're driving, ride-sharing or catching a cab.

  • The trip on public transport takes about 1 hour 30 minutes.

  • Get your travels off to a relaxed start by staying near ONT. Whether you're catching an early flight from Ontario International Airport to Lisbon Portela Airport or want to avoid feeling rushed, these hotels are perfect:

Arriving at Lisbon Portela Airport (LIS)

Getting from Lisbon Portela Airport (LIS) to central Lisbon

  • From Lisbon Portela Airport, Lisbon is approximately 10 kilometres away. It takes around 20 minutes to drive to the centre.

  • Getting to the centre by public transport takes around 1 hour.

When to fly to Lisbon Portela Airport (LIS)

  • June is the most popular month for flights from Ontario International Airport to Lisbon Portela Airport. To avoid the crowds, head to Lisbon in January.

  • Lock in your flight from Ontario International Airport to Lisbon Portela Airport for August if you'd like to go to Lisbon during its warmest month. Expect temperatures of between 16ºC (61ºF) and 29ºC (84ºF).

  • January sees average temperatures of between 8ºC (46ºF) and 16ºC (61ºF). Search for cheap tickets from ONT to LIS around that time if you want to travel in cooler conditions.

Explore more of Portugal

  • Lisbon has loads to offer, but there are so many other corners of Portugal waiting to be discovered. Around 274 kilometres north of Lisbon, a visit to Porto will keep your itinerary packed. Start with leading sights like Livraria Lello, Ribeira District and The Douro River.

  • If you want to check out another corner of Portugal, consider Amadora, about 8 kilometres north-west of Lisbon. Jardim Porta do Viveiro Alfragide, Jardim Caracol do Victor Alfragide and Jardim e estatua Eduardo Jorge are key reasons to visit.

Plan the rest of your trip from Ontario to Lisbon

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.