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663 € Cheap Flights from Ontario International to Lisbon

Compare Ontario International to Lisbon flight deals

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Flight deals from Ontario International to Lisbon

Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Lisbon Airport? If you want to travel next month, return fares start from 908 €. Find the lowest prices on one-way and return tickets right here.
Lisbon.663 € per passenger.Departing Tue, 3 Nov, returning Tue, 10 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Tue, 3 Nov, arriving in Lisbon.Inbound indirect flight with Delta, departs from Lisbon on Tue, 10 Nov, arriving in Ontario International.Price includes taxes and charges.From 663 €, select.
Lisbon.742 € per passenger.Departing Fri, 9 Oct, returning Thu, 5 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Fri, 9 Oct, arriving in Lisbon.Inbound indirect flight with Delta, departs from Lisbon on Thu, 5 Nov, arriving in Ontario International.Price includes taxes and charges.From 742 €, select.
Lisbon.756 € per passenger.Departing Mon, 17 Aug, returning Tue, 1 Sep.Return flight with Frontier Airlines and Aer Lingus.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Mon, 17 Aug, arriving in Lisbon.Inbound indirect flight with Aer Lingus, departs from Lisbon on Tue, 1 Sep, arriving in Ontario International.Price includes taxes and charges.From 756 €, select.
Lisbon.768 € per passenger.Departing Thu, 29 Apr, returning Thu, 6 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Thu, 29 Apr, arriving in Lisbon.Inbound indirect flight with Delta, departs from Lisbon on Thu, 6 May, arriving in Ontario International.Price includes taxes and charges.From 768 €, select.
Lisbon.782 € per passenger.Departing Sat, 5 Sep, returning Fri, 18 Sep.Return flight with Frontier Airlines and Ryanair.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Sat, 5 Sep, arriving in Lisbon.Inbound indirect flight with Ryanair, departs from Lisbon on Fri, 18 Sep, arriving in Ontario International.Price includes taxes and charges.From 782 €, select.
Lisbon.889 € per passenger.Departing Sat, 10 Oct, returning Wed, 14 Oct.Return flight with Frontier Airlines and Ryanair.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Sat, 10 Oct, arriving in Lisbon.Inbound indirect flight with Ryanair, departs from Lisbon on Wed, 14 Oct, arriving in Ontario International.Price includes taxes and charges.From 889 €, select.
Lisbon.908 € per passenger.Departing Fri, 21 Aug, returning Fri, 28 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Fri, 21 Aug, arriving in Lisbon.Inbound indirect flight with Delta, departs from Lisbon on Fri, 28 Aug, arriving in Ontario International.Price includes taxes and charges.From 908 €, select.
Lisbon.1.021 € per passenger.Departing Wed, 16 Dec, returning Thu, 7 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Wed, 16 Dec, arriving in Lisbon.Inbound indirect flight with Delta, departs from Lisbon on Thu, 7 Jan, arriving in Ontario International.Price includes taxes and charges.From 1.021 €, select.
Lisbon.1.080 € per passenger.Departing Mon, 22 Mar, returning Tue, 30 Mar.Return flight with Alaska Airlines and Iberia.Outbound indirect flight with Alaska Airlines, departs from Ontario International on Mon, 22 Mar, arriving in Lisbon.Inbound indirect flight with Iberia, departs from Lisbon on Tue, 30 Mar, arriving in Ontario International.Price includes taxes and charges.From 1.080 €, select.
Lisbon.1.639 € per passenger.Departing Mon, 28 Sep, returning Mon, 5 Oct.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Ontario International on Mon, 28 Sep, arriving in Lisbon.Inbound indirect flight with Turkish Airlines, departs from Lisbon on Mon, 5 Oct, arriving in Ontario International.Price includes taxes and charges.From 1.639 €, select.
Lisbon.2.164 € per passenger.Departing Fri, 24 Jul, returning Fri, 31 Jul.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Ontario International on Fri, 24 Jul, arriving in Lisbon.Inbound indirect flight with Turkish Airlines, departs from Lisbon on Fri, 31 Jul, arriving in Ontario International.Price includes taxes and charges.From 2.164 €, 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 November.
Jul
from 2.164 €
Aug
from 908 €
Sep
from 782 €
Oct
from 889 €
Nov
from 663 €
Dec
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Jan
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Feb
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Mar
from 1.080 €
Apr
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May
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Jun
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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 663 €
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Cascais Municipal Aerodrome

19km from central Lisbon
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Ontario to Lisbon: Flight information

The things to know before you go.
Cheapest flight found663 €
Cheapest month to flyNovember

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 663 €. 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 663 €.
As of July 2026, there are no flights flying from Ontario International to Lisbon.
The cheapest month to fly from Ontario International to Lisbon is usually November.
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 Tuesday, 3 November 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.

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

  • Lisbon's timezone is UTC+0, which makes Lisbon eight hours ahead of Ontario.

  • Get to the airport on time so you don't miss your ONT to LIS flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid sprinting to your gate.

  • Be prepared for bigger queues during popular months such as July. Arriving up to four hours in advance for international flights and two hours for a domestic departure will give you ample time for security and boarding.

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

  • The cheapest price we've seen for a one-way Ontario International Airport to Lisbon Airport flight is 340 €. A round-trip plane ticket is currently 663 €. Depending on the availability and when you book, these fares may change.

  • To get your hands on cheap tickets from ONT to LIS, book early. Airlines tend to offer their most competitively priced fares when flights are first made available.

  • If you're willing to be flexible with your trip dates, use the 'Whole month' search tool. It'll show you the cheapest price across each month when looking for your flight from Ontario International Airport to Lisbon Airport.

  • Finding cheap flights from ONT to LIS is easy with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you when fares go down.

  • Secure the ideal flight for you with the help of the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Ontario International Airport to Lisbon Airport, use the 'Sort by' function. You can also filter by arrival and departure times, airline, and number of stops.

Handy information about Ontario International Airport (ONT)

  • The address for ONT is 2900 E. Airport Drive.

  • Ontario International Airport gets top marks for its on-time performance. 83% of flights that depart ONT reach their destination without delay.

  • Ontario International Airport is about 10 kilometres from central Ontario. If you're ride-sharing, catching a taxi or driving from the centre, it'll take you 15 minutes or so to arrive, depending on the traffic.

  • Expect a trip time of roughly 45 minutes on public transport.

  • Get your holiday off to a stress-free start by staying near ONT. Whether you have an early flight from Ontario International Airport to Lisbon Airport or just don't like being rushed, these hotels are ideal:

Arriving at Lisbon Airport (LIS)

  • The last thing you need is a lengthy journey to your hotel if you're arriving on a late Ontario International Airport to Lisbon Airport flight. Stay at one of these accommodation options near LIS instead:

  • Explore without limits with a Lisbon Airport rental car. Pick up a set of wheels from Klass Wagen, Goldcar or OK Mobility and venture far and wide through Lisbon and beyond.

  • To get the lowest price, book your ride from Lisbon Airport about two weeks before travelling.

Getting from Lisbon Airport (LIS) to central Lisbon

  • Lisbon Airport to the centre of Lisbon has a drive time of around 20 minutes. It's approximately 8 kilometres away.

  • If you're taking public transport, expect a journey time of about 25 minutes.

When to fly to Lisbon Airport (LIS)

  • It's time to work out your dates for your flight from Ontario International Airport to Lisbon Airport. August is the most popular month to visit Lisbon. If you want a more relaxed vibe, go in March.

  • Book your flight from Ontario International Airport to Lisbon Airport for August if you want to go to Lisbon during its warmest month. You can expect temperatures of between 16ºC (61ºF) and 29ºC (84ºF).

  • Search for cheap tickets from ONT to LIS in January if you like cooler conditions. Temperatures are at their lowest then, ranging between 8ºC (46ºF) and 16ºC (61ºF) on average.

Explore more of Portugal

  • Lisbon has plenty going for it, but there are so many other parts of Portugal waiting to be explored. About 274 kilometres north of Lisbon, a trip to Porto will keep you on the go. Start with leading attractions like Ribeira District, Rio Douro and Livraria Lello.

  • Amadora is another must-experience destination in Portugal and is around 8 kilometres north-west of Lisbon. No trip is complete without experiencing Roman Villa, Park Fantasia and Palácio dos Condes da Lousã.

Plan the rest of your trip from Ontario to Lisbon

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.