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

Cheapflights users have booked flights from Ontario to Lisbon round-trip from $666. Other airlines that can offer you cheap pricing are Air Canada, from $804, and British Airways, from $813. United Airlines is priced at 45% 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?

$438 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 Air Canada and Iberia, with prices starting from $660 and $2,231, respectively.

What is the cheapest day to fly from Ontario to Lisbon?

Travelers seeking maximum savings on their Ontario to Lisbon flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Ontario to Lisbon?

Air Canada, Delta and United Airlines are the most popular airlines when flying from Ontario to Lisbon.

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

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 92% on the overall cost on flights from Ontario to Lisbon.

How far in advance should I book a flight from Ontario to Lisbon?

Find a great deal and save up to 29% by booking at least 25 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Ontario to Lisbon within the next two weeks, with the cheapest ticket starting at $857.

What is the cheapest month to fly from Ontario to Lisbon?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, February can be a great choice for travel to Lisbon. Flights to Lisbon from Ontario in February are about $945 on average during February, but can be found for as low as $470.

Most accurate provider : When it comes to deals on Ontario-Lisbon flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Lisbon flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

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.

$438+ Flights from Ontario to Lisbon

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheap flight deals from Ontario to Lisbon

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$666 (United Airlines)
One-way from	$438 (United Airlines)
Popular in	February
Cheapest in	March
Average price	$1,109

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

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($103 potential increase over avg. RT price).

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Cheapest flight prices on average. 10% potential price decrease ($115 potential savings vs. average RT price).

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Average for round-trip flights in May 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 May 1, 2025.

Sat 10/116:38 pmONT - LIS

2 stops54h 42mUnited Airlines

Fri 11/2111:55 amLIS - ONT

2 stops40h 22mUnited Airlines

Deal found 4/30

$666

Sun 9/211:15 pmONT - LIS

2 stops36h 05mAir Canada

Sat 10/49:50 amLIS - ONT

2 stops39h 42mAir Canada

Deal found 4/30

$804

Mon 10/65:02 pmONT - LIS

2 stops22h 08mBritish Airways

Mon 10/136:45 pmLIS - ONT

2 stops31h 00mBritish Airways

Deal found 4/30

$813

Mon 9/293:00 pmONT - LIS

2 stops21h 05mIberia

Wed 10/89:00 amLIS - ONT

2 stops23h 02mIberia

Deal found 4/30

$921

Wed 7/25:08 pmONT - LIS

2 stops17h 32mDelta

Wed 7/911:40 amLIS - ONT

2 stops20h 02mDelta

Deal found 4/29

$939

Tue 7/14:50 pmONT - LIS

2 stops22h 10mAmerican Airlines

Wed 7/911:05 amLIS - ONT

2 stops20h 49mAmerican Airlines

Deal found 4/29

$1,477

Tue 12/1610:57 amONT - LIS

2 stops16h 53mMultiple Airlines

Sun 1/410:45 amLIS - ONT

2 stops19h 18mMultiple Airlines

Deal found 4/30

$3,530

Best flights from Ontario to Lisbon
Discover carefully curated flight deals from Ontario to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Sat 10/116:38 pmONT - LIS

2 stops54h 42mUnited Airlines

Fri 11/2111:55 amLIS - ONT

2 stops40h 22mUnited Airlines

Deal found 4/30

$666

Sun 9/211:15 pmONT - LIS

2 stops36h 05mAir Canada

Sat 10/49:50 amLIS - ONT

2 stops39h 42mAir Canada

Deal found 4/30

$804

Mon 10/65:02 pmONT - LIS

2 stops22h 08mBritish Airways

Mon 10/136:45 pmLIS - ONT

2 stops31h 00mBritish Airways

Deal found 4/30

$813

Mon 9/293:00 pmONT - LIS

2 stops21h 05mIberia

Wed 10/89:00 amLIS - ONT

2 stops23h 02mIberia

Deal found 4/30

$921

Wed 7/25:08 pmONT - LIS

2 stops17h 32mDelta

Wed 7/911:40 amLIS - ONT

2 stops20h 02mDelta

Deal found 4/29

$939

Tue 7/14:50 pmONT - LIS

2 stops22h 10mAmerican Airlines

Wed 7/911:05 amLIS - ONT

2 stops20h 49mAmerican Airlines

Deal found 4/29

$1,477

Last-minute flights from Ontario to Lisbon
Discover last-minute flight deals from Ontario to Lisbon. Data last updated May 1, 2025 and is based on user searches.

Thu 5/110:54 amONT - LIS

2 stops16h 56mMultiple Airlines

Thu 5/88:25 amLIS - ONT

2 stops18h 11mMultiple Airlines

Deal found 4/30

$4,125

Mon 5/56:48 pmONT - LIS

2 stops30h 32mUnited Airlines

Thu 5/1511:25 amLIS - ONT

2 stops33h 13mUnited Airlines

Deal found 4/30

$1,733

Wed 5/211:10 pmONT - LIS

2 stops21h 30mDelta

Sat 5/315:00 amLIS - ONT

2 stops25h 35mDelta

Deal found 4/30

$1,223

Sun 5/251:33 pmONT - LIS

2 stops35h 47mUnited Airlines

Wed 6/2511:25 amLIS - ONT

2 stops42h 46mUnited Airlines

Deal found 4/30

$811

Fri 5/302:44 pmONT - LIS

2 stops17h 21mIberia

Fri 6/612:30 pmLIS - ONT

2 stops18h 32mIberia

Deal found 4/30

$2,469

One-way flights from Ontario to Lisbon
Search for one-way flight options from Ontario to Lisbon. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Sat 7/195:05 amONT - LIS

2 stops21h 30mUnited Airlines

Deal found 4/30

$438

Tue 6/36:41 pmONT - LIS

2 stops32h 24mAir Canada

Deal found 4/30

$660

Sat 5/102:44 pmONT - LIS

2 stops17h 21mIberia

Deal found 4/30

$2,231

Wed 5/146:00 amONT - LIS

2 stops19h 20mMultiple Airlines

Deal found 4/30

$7,802

Cheapflights Fare Finder

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

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sat 10/11

6:38 pm-9:20 am

2 stops54h 42m

Lisbon Humberto Delgado

Fri 11/21

11:55 am-8:17 pm

2 stops40h 22m

$666

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sun 9/21

1:15 pm-9:20 am

2 stops36h 05m

Lisbon Humberto Delgado

Sat 10/4

9:50 am-5:32 pm

2 stops39h 42m

$804

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Mon 10/6

5:02 pm-11:10 pm

2 stops22h 08m

Lisbon Humberto Delgado

Mon 10/13

6:45 pm-5:45 pm

2 stops31h 00m

$813

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Mon 9/29

3:00 pm-8:05 pm

2 stops21h 05m

Lisbon Humberto Delgado

Wed 10/8

9:00 am-12:02 am

2 stops23h 02m

$921

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Wed 7/2

5:08 pm-6:40 pm

2 stops17h 32m

Lisbon Humberto Delgado

Wed 7/9

11:40 am-11:42 pm

2 stops20h 02m

$939

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 7/1

4:50 pm-11:00 pm

2 stops22h 10m

Lisbon Humberto Delgado

Wed 7/9

11:05 am-11:54 pm

2 stops20h 49m

$1,477

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sat 7/19

5:05 am-10:35 am

2 stops21h 30m

$438

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Tue 6/3

6:41 pm-11:05 am

2 stops32h 24m

$660

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Sat 5/10

2:44 pm-4:05 pm

2 stops17h 21m

$2,231

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

Wed 5/14

6:00 am-9:20 am

2 stops19h 20m

$7,802

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Compare providers for flights from Ontario to Lisbon

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Lisbon in May.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Lisbon flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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, 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 $1,178). 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.

What is the cheapest time of day to fly from ONT to LIS?

It’s optimal to fly from Ontario to Lisbon in the afternoon. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight at noon.

Rainfall in Lisbon by month

In terms of precipitation, rainfall in Lisbon ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Lisbon when rainfall is around 0.2 in.

Temperature in Lisbon by month

If weather is an important factor for your trip to Lisbon, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Lisbon

Delta

8.0

Very good

7,934 reviews

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

7,934 reviews

Delta

8.0

Very good

7,934 reviews

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

8,696 reviews

Delta

8.0

Very good

7,934 reviews

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

7,934 reviews

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

7.0

Good

9,245 reviews

Delta

8.0

Very good

7,934 reviews

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

2,700 reviews

Delta

8.0

Very good

7,934 reviews

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

What are the cheapest airlines flying from Ontario to Lisbon round-trip?
Cheapflights users have booked flights from Ontario to Lisbon round-trip from $666. Other airlines that can offer you cheap pricing are Air Canada, from $804, and British Airways, from $813. United Airlines is priced at 45% 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?
$438 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 Air Canada and Iberia, with prices starting from $660 and $2,231, 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 $1,178). 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

Sintra

Beja

Nazaré

Costa da Caparica

Evora

Torres Vedras

Oeiras

Sesimbra

Fátima

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Other flights to Lisbon

Top 3 airlines flying from Ontario to Lisbon

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$568	Average$1,023	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$691	Average$1,247	FlexibilityNo cancel fee	On-time67%
Delta	Cheapest$733	Average$1,242	FlexibilityNo cancel fee	On-timeN/A

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$438+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Lisbon with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Lisbon

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Lisbon

Cheapest flights from Ontario to LisbonExplore 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 May 1, 2025.

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 May 1, 2025.

Cheapflights Fare Finder

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

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 May.

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.

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?

What is the cheapest time of day to fly from ONT to LIS?

Find hourly flight availability from Ontario to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Rainfall in Lisbon by month

Plan your trip to Lisbon by taking into account the average rainfall totals by month.

Temperature in Lisbon by month

Plan your trip to Lisbon by taking into account the average temperature totals by month.

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 May 1, 2025.

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?

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

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

How can I find direct flights from Ontario to Lisbon?

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

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

Traveling to a place near Ontario?

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 3 airlines flying from Ontario to Lisbon

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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 May 1, 2025.