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Lisbon

$336+ 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LIS
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 June 30, 2025.

Round-trip from

$570
(American Airlines)

One-way from

$336
(United Airlines)

Popular in

February

Cheapest in

March

Average price

$1,243
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. 12% potential increase in price ($171 potential increase over avg. RT price).
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Cheapest flight prices on average. 11% potential price decrease ($121 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 30, 2025.

This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1112:47 pmONT - LIS
2 stops19h 18mAmerican Airlines
Wed 8/279:00 amLIS - ONT
2 stops21h 48mAmerican Airlines
Deal found 6/30$570
This Iberia deal was found by Cheapflights users on 6/30. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1110:50 amONT - LIS
2 stops21h 15mIberia
Wed 8/276:35 amLIS - ONT
2 stops24h 13mIberia
Deal found 6/30$579
This Ovago deal was found by Cheapflights users on 6/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/122:57 pmONT - LIS
2 stops24h 03mBritish Airways
Tue 8/196:35 amLIS - ONT
2 stops37h 17mBritish Airways
Deal found 6/28$592
This Delta deal was found by Cheapflights users on 6/28. 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 10/14:40 pmONT - LIS
2 stops18h 00mDelta
Wed 10/155:40 amLIS - ONT
2 stops19h 37mDelta
Deal found 6/28$672
This United Airlines deal was found by Cheapflights users on 6/29. 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 10/166:00 amONT - LIS
2 stops18h 20mUnited Airlines
Fri 10/315:00 amLIS - ONT
2 stops19h 34mUnited Airlines
Deal found 6/29$698
This Air Canada deal was found by Cheapflights users on 6/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/75:10 amONT - LIS
3 stops20h 10mMultiple Airlines
Sun 9/1412:55 pmLIS - ONT
2 stops31h 37mMultiple Airlines
Deal found 6/29$1,359

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 June 30, 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

Mon 8/11

12:47 pm-4:05 pm

2 stops19h 18m

Lisbon Humberto Delgado

Wed 8/27

9:00 am-10:48 pm

2 stops21h 48m

$570

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Mon 8/11

10:50 am-4:05 pm

2 stops21h 15m

Lisbon Humberto Delgado

Wed 8/27

6:35 am-10:48 pm

2 stops24h 13m

$579

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 8/12

2:57 pm-11:00 pm

2 stops24h 03m

Lisbon Humberto Delgado

Tue 8/19

6:35 am-11:52 am

2 stops37h 17m

$592

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Wed 10/1

4:40 pm-6:40 pm

2 stops18h 00m

Lisbon Humberto Delgado

Wed 10/15

5:40 am-5:17 pm

2 stops19h 37m

$672

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Thu 10/16

6:00 am-8:20 am

2 stops18h 20m

Lisbon Humberto Delgado

Fri 10/31

5:00 am-5:34 pm

2 stops19h 34m

$698

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sun 9/7

5:10 am-9:20 am

3 stops20h 10m

Lisbon Humberto Delgado

Sun 9/14

12:55 pm-12:32 pm

2 stops31h 37m

$1,359

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Mon 11/24

6:09 am-8:10 am

2 stops18h 01m

$336

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sun 9/28

7:05 am-8:00 am

2 stops16h 55m

$339

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sun 8/10

5:05 am-11:05 am

2 stops22h 00m

$362

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sun 9/7

2:30 pm-8:05 pm

2 stops21h 35m

$394

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 12 results
1
2

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 $1,134). 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 June 30, 2025.
See what other customers who have flown with Delta, United Airlines, and American 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
7,969 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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
7,969 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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
8,852 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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.
Air Canada
7.1
Good
9,657 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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.
Iberia
7.0
Good
2,811 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

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.

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

    Cheapflights users have booked flights from Ontario to Lisbon round-trip from $570. Other airlines that can offer you cheap pricing are Iberia, from $579, and British Airways, from $592. American Airlines is priced at 50% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Ontario to Lisbon one-way?

    $336 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Delta and Air Canada, with prices starting from $339 and $362, respectively.

  • 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 $1,134). 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 Ontario?

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

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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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$568Average$1,175FlexibilityNo cancel feeOn-time69%

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