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Lisbon

$287+ 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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIS
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Cheap 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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$492
(United Airlines)

One-way from

$287
(Mytrip)

Popular in

February

Cheapest in

March

Average price

$779
Provider with most accurate pricing for Ontario-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Ontario-Lisbon Humberto Delgado flights.
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From Ontario to Lisbon Humberto Delgado
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One-way flight from Ontario to Lisbon Humberto Delgado
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Highest demand for flights based on searches. 5% potential increase in price ($62 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($70 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 16, 2025.

This United Airlines deal was found by Cheapflights users on 10/15. 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 11/117:00 amONT - LIS
2 stops17h 10mUnited Airlines
Tue 11/185:00 amLIS - ONT
2 stops23h 44mUnited Airlines
Deal found 10/15$497
This United Airlines deal was found by Cheapflights users on 10/15. 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 10/287:00 amONT - LIS
2 stops18h 10mUnited Airlines
Tue 11/46:10 amLIS - ONT
2 stops22h 34mUnited Airlines
Deal found 10/15$498
This United Airlines deal was found by Cheapflights users on 10/15. 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 11/25:05 amONT - LIS
2 stops34h 25mUnited Airlines
Thu 11/136:10 amLIS - ONT
2 stops24h 41mUnited Airlines
Deal found 10/15$500
This United Airlines deal was found by Cheapflights users on 10/15. 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 11/137:00 amONT - LIS
2 stops17h 10mUnited Airlines
Wed 12/36:10 amLIS - ONT
2 stops19h 27mUnited Airlines
Deal found 10/15$522
This United Airlines deal was found by Cheapflights users on 10/15. 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 12/26:00 amONT - LIS
2 stops18h 10mUnited Airlines
Mon 12/810:15 amLIS - ONT
2 stops18h 27mUnited Airlines
Deal found 10/15$534
This United Airlines deal was found by Cheapflights users on 10/16. 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 11/309:35 pmONT - LIS
2 stops28h 40mUnited Airlines
Sun 12/711:55 amLIS - ONT
2 stops32h 22mUnited Airlines
Deal found 10/16$539
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Sat 11/17:00 amONT - LIS
2 stops44h 15mUnited Airlines
Wed 11/126:10 amLIS - ONT
2 stops24h 21mUnited Airlines
Deal found 10/15$609
This United Airlines deal was found by Cheapflights users on 10/16. 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 11/47:00 amONT - LIS
2 stops17h 10mUnited Airlines
Tue 11/185:00 amLIS - ONT
2 stops23h 44mUnited Airlines
Deal found 10/16$710
This British Airways deal was found by Cheapflights users on 10/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1210:47 amONT - LIS
2 stops20h 03mBritish Airways
Sun 11/167:05 amLIS - ONT
2 stops24h 52mBritish Airways
Deal found 10/15$722

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 October 16, 2025.
Use the filters below to find and compare flights from Ontario to Lisbon that are best for you.

Fly from

Ontario

Fly to

Lisbon

Route

Depart

Return

Price

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 1/13

6:00 am-9:20 am

2 stops19h 20m

Lisbon Humberto Delgado

Wed 2/25

6:10 am-6:00 pm

2 stops19h 50m

$494

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 1/13

5:05 am-9:20 am

2 stops20h 15m

Lisbon Humberto Delgado

Tue 1/20

6:10 am-5:51 pm

2 stops19h 41m

$494

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 1/6

6:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Wed 1/14

5:00 am-8:58 pm

2 stops23h 58m

$497

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 11/11

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

Tue 11/18

5:00 am-8:44 pm

2 stops23h 44m

$497

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 12/9

6:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Wed 1/14

5:00 am-8:58 pm

2 stops23h 58m

$497

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 12/2

6:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Thu 12/11

5:00 am-8:42 pm

2 stops23h 42m

$497

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Mon 1/5

5:05 am-8:10 am

2 stops19h 05m

Lisbon Humberto Delgado

Mon 1/12

5:00 am-8:58 pm

2 stops23h 58m

$696

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 11/4

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

Tue 11/18

5:00 am-8:44 pm

2 stops23h 44m

$710

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Wed 11/12

10:47 am-2:50 pm

2 stops20h 03m

Lisbon Humberto Delgado

Sun 11/16

7:05 am-11:57 pm

2 stops24h 52m

$722

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sat 11/1

7:00 am-10:15 am

2 stops44h 15m

Lisbon Humberto Delgado

Wed 11/12

10:15 am-10:51 pm

3 stops44h 36m

$751

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 21 results
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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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Lisbon flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Lisbon

What is the cheapest month to book a flight from Ontario to Lisbon?

Currently, February is the cheapest month in which you can book a flight from Ontario to Lisbon (average of $474). Flying from Ontario to Lisbon in May is currently the most expensive (average of $695). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 October 16, 2025.
See what other customers who have flown with Delta and 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.
Delta
8.0
Very good
7,984 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,984 reviews
Delta
8.0
Very good
7,984 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,982 reviews
Delta
8.0
Very good
7,984 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 20m. United Airlines provides one of the quickest options available for as low as $494. Airlines will cover a distance of 5634 mi.

  • What are the cheapest airlines flying from Ontario to Lisbon round-trip?

    Cheapflights users have booked flights from Ontario to Lisbon round-trip from $515. Another airline that can offer you cheap pricing is Delta. United Airlines is priced at 48% 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.

  • What is the cheapest month to book a flight from Ontario to Lisbon?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Lisbon (average of $474). Flying from Ontario to Lisbon in May is currently the most expensive (average of $695). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Lisbon?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Lisbon

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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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$515Average$853FlexibilityNo cancel feeOn-time69%
DeltaCheapest$582Average$840FlexibilityNo cancel feeOn-timeN/A

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