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Lisbon

$264+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIS
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 December 4, 2025.

This United Airlines deal was found by Cheapflights users on 12/2. 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 12/36:00 amONT - LIS
2 stops18h 10mUnited Airlines
Wed 12/106:10 amLIS - ONT
2 stops19h 27mUnited Airlines
Deal found 12/2$498
This Delta deal was found by Cheapflights users on 12/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:00 amONT - LIS
2 stops18h 00mDelta
Wed 12/245:30 amLIS - ONT
2 stops25h 03mDelta
Deal found 12/2$506
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/106:00 amONT - LIS
2 stops18h 10mUnited Airlines
Wed 12/1710:15 amLIS - ONT
2 stops18h 27mUnited Airlines
Deal found 12/3$510
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/46:00 amONT - LIS
2 stops19h 20mUnited Airlines
Thu 12/115:00 amLIS - ONT
2 stops23h 42mUnited Airlines
Deal found 12/3$519
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/36:00 amONT - LIS
2 stops18h 10mUnited Airlines
Mon 12/86:10 amLIS - ONT
2 stops19h 27mUnited Airlines
Deal found 12/3$523
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Fri 12/56:00 amONT - LIS
2 stops18h 10mUnited Airlines
Thu 12/2511:55 amLIS - ONT
2 stops18h 30mUnited Airlines
Deal found 12/2$534
This Delta deal was found by Cheapflights users on 12/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:05 amONT - LIS
2 stops16h 55mDelta
Wed 12/245:30 amLIS - ONT
2 stops25h 03mDelta
Deal found 12/2$556
This Air Canada deal was found by Cheapflights users on 12/3. 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.
Thu 12/45:05 amONT - LIS
2 stops20h 15mMultiple Airlines
Thu 12/1110:55 amLIS - ONT
3 stops43h 54mMultiple Airlines
Deal found 12/3$614
This British Airways deal was found by Cheapflights users on 12/2. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:47 amONT - LIS
2 stops22h 53mBritish Airways
Sun 1/116:40 pmLIS - ONT
2 stops30h 42mBritish Airways
Deal found 12/2$701
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/156:00 amONT - LIS
2 stops18h 10mUnited Airlines
Wed 12/2411:00 amLIS - ONT
2 stops43h 25mUnited Airlines
Deal found 12/3$724
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/156:00 amONT - LIS
2 stops18h 10mUnited Airlines
Thu 12/2511:55 amLIS - ONT
2 stops18h 30mUnited Airlines
Deal found 12/3$740
This oojo deal was found by Cheapflights users on 12/4. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:55 pmONT - LIS
2 stops25h 00mBritish Airways
Fri 1/167:05 amLIS - ONT
2 stops23h 08mBritish Airways
Deal found 12/4$741

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$456
(oojo)

One-way from

$264
(oojo)

Popular in

February

Cheapest in

November

Average price

$1,122
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. 12% potential increase in price ($134 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($86 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 4, 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

Thu 1/29

6:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Mon 2/2

11:20 am-12:47 pm

2 stops33h 27m

$494

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 1/13

5:05 am-9:20 am

2 stops20h 15m

Lisbon Humberto Delgado

Fri 1/23

5:00 am-5:43 pm

2 stops20h 43m

$496

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Thu 1/15

5:05 am-9:20 am

2 stops20h 15m

Lisbon Humberto Delgado

Mon 1/19

5:00 am-5:43 pm

2 stops20h 43m

$496

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Thu 2/26

7:30 am-5:30 pm

2 stops26h 00m

Lisbon Humberto Delgado

Sun 3/1

5:30 am-11:49 pm

2 stops26h 19m

$506

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Thu 1/8

6:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Fri 1/16

10:15 am-10:53 pm

2 stops20h 38m

$510

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 4/14

1:33 pm-10:05 am

2 stops36h 32m

Lisbon Humberto Delgado

Tue 4/28

11:00 am-5:46 pm

2 stops38h 46m

$521

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 4/7

7:00 am-8:20 am

2 stops17h 20m

Lisbon Humberto Delgado

Tue 4/14

12:20 pm-5:47 pm

3 stops37h 27m

$570

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 4/7

7:00 am-8:20 am

2 stops17h 20m

Lisbon Humberto Delgado

Thu 4/23

10:25 am-11:06 pm

2 stops20h 41m

$570

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 4/7

7:00 am-8:20 am

2 stops17h 20m

Lisbon Humberto Delgado

Fri 4/24

12:20 pm-12:38 pm

2 stops32h 18m

$570

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 4/7

7:00 am-8:20 am

2 stops17h 20m

Lisbon Humberto Delgado

Tue 4/21

12:20 pm-11:06 pm

2 stops18h 46m

$570

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 22 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 December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Lisbon flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $481). Flying from Ontario to Lisbon in June is currently the most expensive (average of $672). 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 December 4, 2025.
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
9,066 reviews

Crew

8.1

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,066 reviews
United Airlines
7.4
Good
9,066 reviews

Crew

8.1

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 18h 10m. United Airlines provides one of the quickest options available for as low as $494. 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 44% 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 $481). Flying from Ontario to Lisbon in June is currently the most expensive (average of $672). 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
Fátima
Oeiras
Ericeira
Costa da Caparica
Torres Vedras
Beja
Nazaré
Sesimbra
Colares

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Top airline flying from Ontario to Lisbon

Discover the top airline 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$515Average$740FlexibilityNo cancel feeOn-time69%

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