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Lisbon

$384+ Cheap flights from Ontario (ONT) to Lisbon (LIS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIS
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
1 adult, Economy
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Cheap flight deals from Ontario to Lisbon

Cheapest flights from Ontario to Lisbon
Explore the most affordable flight options available from Ontario to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2026.

This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/256:00 am
ONT
-
LIS
2 stops19h 10m
United Airlines
Wed 11/1810:15 am
LIS
-
ONT
2 stops18h 36m
United Airlines
Deal found 7/29$770
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:00 am
ONT
-
LIS
2 stops18h 20m
United Airlines
Tue 11/310:15 am
LIS
-
ONT
2 stops19h 25m
United Airlines
Deal found 8/1$771
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:07 am
ONT
-
LIS
2 stops19h 13m
United Airlines
Wed 11/410:15 am
LIS
-
ONT
2 stops18h 36m
United Airlines
Deal found 7/30$774
This Air Canada deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:25 am
ONT
-
LIS
2 stops15h 55m
Multiple Airlines
Tue 11/1711:20 am
LIS
-
ONT
2 stops17h 31m
Multiple Airlines
Deal found 8/2$783
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:03 am
ONT
-
LIS
2 stops17h 17m
United Airlines
Wed 12/25:00 am
LIS
-
ONT
2 stops20h 47m
United Airlines
Deal found 7/30$788
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:00 am
ONT
-
LIS
2 stops18h 20m
United Airlines
Wed 10/2110:25 am
LIS
-
ONT
2 stops20h 24m
United Airlines
Deal found 8/1$801
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:07 am
ONT
-
LIS
2 stops19h 13m
United Airlines
Wed 10/2810:15 am
LIS
-
ONT
2 stops18h 25m
United Airlines
Deal found 7/30$804
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:03 am
ONT
-
LIS
2 stops17h 17m
United Airlines
Tue 10/275:00 am
LIS
-
ONT
2 stops20h 01m
United Airlines
Deal found 8/2$818
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:00 am
ONT
-
LIS
2 stops18h 20m
United Airlines
Fri 11/612:20 pm
LIS
-
ONT
2 stops18h 28m
United Airlines
Deal found 8/1$821
This Air Canada deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/155:00 am
ONT
-
LIS
2 stops20h 20m
Air Canada
Wed 12/3011:20 am
LIS
-
ONT
2 stops32h 55m
Air Canada
Deal found 7/30$847
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:00 am
ONT
-
LIS
2 stops18h 20m
United Airlines
Sun 11/1512:20 pm
LIS
-
ONT
2 stops18h 28m
United Airlines
Deal found 7/29$870
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:00 am
ONT
-
LIS
2 stops18h 10m
United Airlines
Wed 11/1110:15 am
LIS
-
ONT
2 stops18h 36m
United Airlines
Deal found 7/29$872

Find flight deals from Ontario to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Lisbon (LIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 2, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$765
(United Airlines)

One-way from

$384
(United Airlines)

Popular in

April

Cheapest in

October

Average price

$923
Provider with most accurate pricing for Ontario-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Lisbon Humberto Delgado flights.
Search Deals
From Ontario to Lisbon Humberto Delgado
Search Deals
One-way flight from Ontario to Lisbon Humberto Delgado
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($83 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($61 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Lisbon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 2, 2026.
Use the filters below to find and compare flights from Ontario to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sun 10/25

6:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Wed 11/18

10:15 am-8:51 pm

2 stops18h 36m

$770
Quickest round-trip

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 11/3

9:25 am-9:20 am

2 stops15h 55m

Lisbon Humberto Delgado

Tue 11/17

11:20 am-8:51 pm

2 stops17h 31m

$783

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Mon 10/19

6:00 am-8:20 am

2 stops18h 20m

Lisbon Humberto Delgado

Sat 10/31

10:15 am-9:40 pm

2 stops18h 25m

$876

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Fri 10/23

6:00 am-8:20 am

2 stops18h 20m

Lisbon Humberto Delgado

Sun 11/15

12:20 pm-10:48 pm

2 stops18h 28m

$885

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sun 11/1

6:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Sat 11/7

10:15 am-9:40 pm

2 stops19h 25m

$892

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Wed 9/16

9:01 am-10:30 am

2 stops17h 29m

Lisbon Humberto Delgado

Wed 9/23

11:25 am-8:58 pm

2 stops41h 33m

$975

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 9/15

5:00 am-10:30 am

2 stops21h 30m

Lisbon Humberto Delgado

Wed 9/23

11:25 am-8:58 pm

2 stops41h 33m

$975

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sun 9/13

7:05 am-11:15 am

2 stops20h 10m

Lisbon Humberto Delgado

Tue 9/22

11:55 am-4:35 pm

2 stops36h 40m

$984

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 10/13

8:03 am-9:20 am

2 stops17h 17m

Lisbon Humberto Delgado

Tue 10/20

7:35 am-8:58 pm

2 stops21h 23m

$1,038

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Mon 10/19

6:07 am-9:20 am

2 stops19h 13m

Lisbon Humberto Delgado

Sun 11/1

10:15 am-8:51 pm

2 stops18h 36m

$1,044

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Ontario to Lisbon

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Lisbon in August.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Lisbon flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Ontario-Lisbon flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Ontario-Lisbon flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Lisbon flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Lisbon. Reviews last updated August 2, 2026.
See what other customers who have flown with United Airlines from Ontario to Lisbon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,061 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
10,061 reviews
United Airlines
7.4
Good
10,061 reviews

Crew

8.1

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Lisbon?

    A quick flight from Ontario to Lisbon can take about 19h 13m. United Airlines provides one of the quickest options available for as low as $809. Airlines will cover a distance of 5634 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Ontario to Lisbon round-trip?

    Cheapflights users have booked flights from Ontario to Lisbon round-trip from $515. United Airlines is priced at 42% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Ontario to Lisbon that include hotel bookings?

    Yes. In addition to deals on Ontario to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Lisbon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Lisbon.

  • Can I find deals for business class flights from Ontario to Lisbon?

    Yes. Cheapflights offers flight deals from Ontario to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Fátima
Ericeira
Oeiras
Beja
Torres Vedras
Nazaré
Colares
Sesimbra

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Ontario to Lisbon

Discover the top 2 airlines that operate flights from Ontario to Lisbon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$515Average$727FlexibilityNo cancel feeOn-time69%
DeltaCheapest$582Average$1,282FlexibilityNo cancel feeOn-timeN/A

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