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Lisbon

$291+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIS
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$494
(United Airlines)

One-way from

$291
(United Airlines)

Popular in

February

Cheapest in

March

Average price

$812
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. 19% potential increase in price ($261 potential increase over avg. RT price).
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Cheapest flight prices on average. 15% potential price decrease ($141 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/14. 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 12/1711:00 amLIS - ONT
2 stops42h 52mUnited Airlines
Deal found 9/14$494
This Delta deal was found by Cheapflights users on 9/14. 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.
Sun 11/27:35 amONT - LIS
2 stops23h 35mDelta
Thu 11/135:30 amLIS - ONT
2 stops25h 34mDelta
Deal found 9/14$510
This United Airlines deal was found by Cheapflights users on 9/14. 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 11/1810:15 amLIS - ONT
2 stops18h 29mUnited Airlines
Deal found 9/14$511
This Air Canada deal was found by Cheapflights users on 9/13. 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 11/115:05 amONT - LIS
2 stops20h 15mAir Canada
Wed 11/1911:20 amLIS - ONT
2 stops17h 24mAir Canada
Deal found 9/13$513
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 12/86:00 amONT - LIS
2 stops18h 10mUnited Airlines
Mon 12/1510:15 amLIS - ONT
2 stops18h 27mUnited Airlines
Deal found 9/15$561
This United Airlines deal was found by Cheapflights users on 9/14. 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 12/86:00 amONT - LIS
2 stops18h 10mUnited Airlines
Mon 12/2211:55 amLIS - ONT
2 stops18h 30mUnited Airlines
Deal found 9/14$592
This Delta deal was found by Cheapflights users on 9/13. 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.
Fri 10/244:35 pmONT - LIS
2 stops18h 05mDelta
Fri 10/315:30 amLIS - ONT
2 stops22h 50mDelta
Deal found 9/13$626
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/216:00 amONT - LIS
2 stops18h 20mUnited Airlines
Tue 10/285:00 amLIS - ONT
2 stops19h 34mUnited Airlines
Deal found 9/14$632
This United Airlines deal was found by Cheapflights users on 9/14. 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 11/21:29 pmONT - LIS
2 stops26h 01mUnited Airlines
Thu 11/1310:15 amLIS - ONT
3 stops44h 36mUnited Airlines
Deal found 9/14$634
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/79:50 amONT - LIS
2 stops24h 00mDelta
Fri 10/245:00 amLIS - ONT
2 stops25h 41mDelta
Deal found 9/15$635
This United Airlines deal was found by Cheapflights users on 9/14. 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 11/235:05 amONT - LIS
2 stops19h 05mUnited Airlines
Mon 12/810:15 amLIS - ONT
2 stops18h 27mUnited Airlines
Deal found 9/14$644

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 September 15, 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

Wed 1/7

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

Wed 1/21

11:20 am-10:26 pm

2 stops43h 06m

$494

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Wed 2/25

6:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Fri 3/6

5:00 am-8:17 pm

2 stops23h 17m

$504

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 1/6

5:05 am-9:20 am

2 stops20h 15m

Lisbon Humberto Delgado

Tue 1/13

11:20 am-10:26 pm

2 stops19h 06m

$506

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sun 11/2

5:00 am-2:10 pm

2 stops25h 10m

Lisbon Humberto Delgado

Thu 11/13

5:30 am-11:04 pm

2 stops25h 34m

$510

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 11/18

7:00 am-9:20 am

2 stops18h 20m

Lisbon Humberto Delgado

Thu 11/27

6:10 am-5:34 pm

2 stops19h 24m

$510

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 11/11

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

Thu 11/20

10:15 am-10:31 pm

2 stops20h 16m

$511

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Wed 12/3

6:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Wed 12/17

10:15 am-9:49 pm

2 stops19h 34m

$511

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Wed 11/12

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

Wed 11/19

11:55 am-10:31 pm

2 stops18h 36m

$511

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Mon 12/8

6:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Mon 12/15

10:15 am-8:42 pm

2 stops18h 27m

$561

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Thu 2/12

5:40 am-7:55 am

2 stops18h 15m

Lisbon Humberto Delgado

Fri 2/20

10:15 am-9:19 pm

2 stops19h 04m

$561

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 18 results
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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, January is the cheapest month in which you can book a flight from Ontario to Lisbon (average of $612). Flying from Ontario to Lisbon in June is currently the most expensive (average of $1,127). 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 September 15, 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
8,929 reviews

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

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
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

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 17h 10m. United Airlines provides one of the quickest options available for as low as $494. Airlines will cover a distance of 5634 mi.

  • 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 $568. United Airlines is priced at 47% 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, January is the cheapest month in which you can book a flight from Ontario to Lisbon (average of $612). Flying from Ontario to Lisbon in June is currently the most expensive (average of $1,127). 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
Beja
Nazaré
Ericeira
Costa da Caparica
Torres Vedras
Sesimbra
Colares

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Lisbon

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$568Average$1,023FlexibilityNo cancel feeOn-time69%

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