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 49% lower than the current average price of a flight leaving 3 months from now.

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.

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.

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).

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 45% by booking at least 53 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 $834.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to Lisbon. Flights to Lisbon from Ontario in February are about $915 on average during February, but can be found for as low as $469.

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.

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.

$325+ Cheap Flights from Ontario to Lisbon

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Cheap flight deals from Ontario to Lisbon

Round-trip from	$499 (United Airlines)
One-way from	$325 (Trip.com)
Popular in	February
Cheapest in	March
Average price	$1,500

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. 14% potential increase in price ($194 potential increase over avg. RT price).

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Cheapest flight prices on average. 13% potential price decrease ($136 potential savings vs. average RT price).

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Average for round-trip flights in August 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 agosto 14, 2025.

mar. 10/287:00 amONT - LIS

2 stops18h 10mUnited Airlines

mar. 11/45:00 amLIS - ONT

2 stops20h 34mUnited Airlines

Deal found 8/13

$503

mar. 11/117:00 amONT - LIS

2 stops17h 10mUnited Airlines

mar. 11/185:00 amLIS - ONT

2 stops20h 34mUnited Airlines

Deal found 8/14

$504

dom. 11/25:05 amONT - LIS

2 stops21h 10mUnited Airlines

jue. 11/136:10 amLIS - ONT

2 stops43h 24mUnited Airlines

Deal found 8/14

$514

vie. 11/285:05 amONT - LIS

2 stops19h 05mUnited Airlines

vie. 12/55:00 amLIS - ONT

2 stops39h 32mUnited Airlines

Deal found 8/13

$553

mié. 11/197:00 amONT - LIS

2 stops17h 10mUnited Airlines

mié. 11/2611:55 amLIS - ONT

2 stops18h 36mUnited Airlines

Deal found 8/12

$593

jue. 10/167:02 amONT - LIS

2 stops20h 03mUnited Airlines

jue. 10/236:15 amLIS - ONT

2 stops24h 37mUnited Airlines

Deal found 8/13

$627

mar. 9/166:50 pmONT - LIS

2 stops30h 30mUnited Airlines

mar. 9/2312:55 pmLIS - ONT

2 stops41h 35mUnited Airlines

Deal found 8/14

$647

dom. 10/1911:59 pmONT - LIS

2 stops31h 41mBritish Airways

dom. 10/2612:55 pmLIS - ONT

2 stops36h 58mBritish Airways

Deal found 8/14

$656

mié. 8/206:04 amONT - LIS

2 stops18h 16mUnited Airlines

mié. 8/2712:20 pmLIS - ONT

2 stops18h 10mUnited Airlines

Deal found 8/12

$670

lun. 9/86:04 amONT - LIS

2 stops20h 26mUnited Airlines

mié. 10/85:05 amLIS - ONT

2 stops25h 47mUnited Airlines

Deal found 8/13

$676

lun. 10/136:36 pmONT - LIS

2 stops30h 44mUnited Airlines

lun. 10/275:00 amLIS - ONT

2 stops24h 45mUnited Airlines

Deal found 8/13

$677

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 agosto 14, 2025.

mar. 2/37:00 amONT - LIS

2 stops18h 20mUnited Airlines

mar. 2/175:00 amLIS - ONT

2 stops23h 45mUnited Airlines

Deal found 8/13

$499

sáb. 1/175:40 amONT - LIS

3 stops19h 15mMultiple Airlines

sáb. 1/3111:20 amLIS - ONT

2 stops19h 06mMultiple Airlines

Deal found 8/13

$606

mar. 10/287:00 amONT - LIS

2 stops18h 10mUnited Airlines

mar. 11/45:00 amLIS - ONT

2 stops20h 34mUnited Airlines

Deal found 8/13

$503

mar. 11/117:00 amONT - LIS

2 stops17h 10mUnited Airlines

mar. 11/185:00 amLIS - ONT

2 stops20h 34mUnited Airlines

Deal found 8/14

$504

dom. 11/25:05 amONT - LIS

2 stops21h 10mUnited Airlines

jue. 11/136:10 amLIS - ONT

2 stops43h 24mUnited Airlines

Deal found 8/14

$514

vie. 11/286:00 amONT - LIS

2 stops20h 15mUnited Airlines

vie. 12/55:00 amLIS - ONT

2 stops23h 42mUnited Airlines

Deal found 8/13

$553

dom. 2/17:00 amONT - LIS

2 stops17h 10mUnited Airlines

sáb. 2/285:00 amLIS - ONT

2 stops23h 45mUnited Airlines

Deal found 8/13

$553

mié. 11/197:00 amONT - LIS

2 stops17h 10mUnited Airlines

mié. 11/2611:55 amLIS - ONT

2 stops18h 36mUnited Airlines

Deal found 8/12

$593

sáb. 1/175:40 amONT - LIS

2 stops19h 15mUnited Airlines

sáb. 1/315:00 amLIS - ONT

2 stops23h 17mUnited Airlines

Deal found 8/13

$599

jue. 10/167:02 amONT - LIS

2 stops20h 03mUnited Airlines

jue. 10/236:15 amLIS - ONT

2 stops24h 37mUnited Airlines

Deal found 8/13

$627

Last-minute flights from Ontario to Lisbon
Discover last-minute flight deals from Ontario to Lisbon. Data last updated agosto 14, 2025 and is based on user searches.

mar. 8/197:00 amONT - LIS

2 stops17h 20mUnited Airlines

sáb. 9/69:50 amLIS - ONT

2 stops44h 40mUnited Airlines

Deal found 8/13

$1,570

mié. 8/206:04 amONT - LIS

2 stops18h 16mUnited Airlines

mié. 8/2712:20 pmLIS - ONT

2 stops18h 10mUnited Airlines

Deal found 8/12

$670

mié. 8/206:04 amONT - LIS

2 stops18h 16mUnited Airlines

lun. 8/2512:20 pmLIS - ONT

2 stops18h 10mUnited Airlines

Deal found 8/13

$730

mié. 8/206:04 amONT - LIS

2 stops18h 16mUnited Airlines

mar. 8/2610:25 amLIS - ONT

2 stops20h 05mUnited Airlines

Deal found 8/13

$770

mié. 8/206:04 amONT - LIS

2 stops18h 16mUnited Airlines

dom. 8/2412:20 pmLIS - ONT

2 stops18h 10mUnited Airlines

Deal found 8/13

$1,163

jue. 8/216:04 amONT - LIS

2 stops18h 16mUnited Airlines

jue. 8/2812:20 pmLIS - ONT

2 stops18h 10mUnited Airlines

Deal found 8/13

$1,286

jue. 8/216:04 amONT - LIS

2 stops18h 16mUnited Airlines

vie. 8/228:10 pmLIS - ONT

2 stops32h 33mUnited Airlines

Deal found 8/13

$1,313

sáb. 8/237:00 amONT - LIS

2 stops17h 20mUnited Airlines

dom. 8/315:05 amLIS - ONT

2 stops23h 28mUnited Airlines

Deal found 8/14

$1,318

mié. 9/312:45 pmONT - LIS

2 stops26h 25mBritish Airways

sáb. 9/136:55 pmLIS - ONT

2 stops31h 59mBritish Airways

Deal found 8/13

$782

lun. 9/86:04 amONT - LIS

2 stops20h 26mUnited Airlines

mié. 10/85:05 amLIS - ONT

2 stops25h 47mUnited Airlines

Deal found 8/13

$676

mar. 9/166:50 pmONT - LIS

2 stops30h 30mUnited Airlines

mar. 9/2312:55 pmLIS - ONT

2 stops41h 35mUnited Airlines

Deal found 8/14

$647

mar. 9/1611:55 amONT - LIS

2 stops18h 55mMultiple Airlines

mié. 9/2410:00 amLIS - ONT

2 stops20h 23mMultiple Airlines

Deal found 8/14

$740

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 agosto 14, 2025.

dom. 11/167:47 amONT - LIS

2 stops25h 58mMultiple Airlines

Deal found 8/14

$325

mar. 10/215:05 amONT - LIS

3 stops20h 15mUnited Airlines

Deal found 8/14

$336

mar. 10/149:36 amONT - LIS

2 stops17h 29mUnited Airlines

Deal found 8/13

$343

lun. 10/136:36 pmONT - LIS

2 stops30h 44mUnited Airlines

Deal found 8/13

$347

lun. 9/295:05 amONT - LIS

2 stops20h 15mUnited Airlines

Deal found 8/14

$355

sáb. 9/277:02 amONT - LIS

2 stops19h 33mUnited Airlines

Deal found 8/13

$360

sáb. 11/227:00 amONT - LIS

2 stops43h 15mUnited Airlines

Deal found 8/13

$361

dom. 9/285:05 amONT - LIS

3 stops20h 15mAir Canada

Deal found 8/13

$362

lun. 10/66:36 pmONT - LIS

2 stops30h 44mUnited Airlines

Deal found 8/13

$366

vie. 9/266:27 pmONT - LIS

2 stops32h 38mAir Canada

Deal found 8/13

$367

dom. 8/314:54 pmONT - LIS

2 stops33h 11mBritish Airways

Deal found 8/14

$380

lun. 9/1512:45 pmONT - LIS

2 stops21h 10mBritish Airways

Deal found 8/13

$385

Fly from

Fly to

Route

Depart

Return

Price

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

mar. 2/3

7:00 am-9:20 am

2 stops18h 20m

Lisbon Humberto Delgado

mar. 2/17

5:00 am-8:45 pm

2 stops23h 45m

$499

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

mar. 10/28

7:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

mar. 11/4

5:00 am-5:34 pm

2 stops20h 34m

$503

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

mar. 11/11

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

mar. 11/18

5:00 am-5:34 pm

2 stops20h 34m

$504

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

dom. 11/2

5:05 am-10:15 am

2 stops21h 10m

Lisbon Humberto Delgado

jue. 11/13

6:10 am-5:34 pm

2 stops43h 24m

$514

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

vie. 11/28

6:00 am-10:15 am

2 stops20h 15m

Lisbon Humberto Delgado

vie. 12/5

5:00 am-8:42 pm

2 stops23h 42m

$553

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

dom. 2/1

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

sáb. 2/28

5:00 am-8:45 pm

2 stops23h 45m

$553

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

mié. 11/19

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

mié. 11/26

11:55 am-10:31 pm

2 stops18h 36m

$593

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

sáb. 1/17

5:40 am-8:55 am

2 stops19h 15m

Lisbon Humberto Delgado

sáb. 1/31

5:00 am-8:17 pm

2 stops23h 17m

$599

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

sáb. 1/17

5:40 am-8:55 am

3 stops19h 15m

Lisbon Humberto Delgado

sáb. 1/31

11:20 am-10:26 pm

2 stops19h 06m

$606

OntarioLisbon

ONT - LIS

ONTLIS

Ontario

jue. 10/16

7:02 am-11:05 am

2 stops20h 03m

Lisbon Humberto Delgado

jue. 10/23

6:15 am-10:52 pm

2 stops24h 37m

$627

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 20 results

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 $1,128). 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

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

8,916 reviews

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

8,916 reviews

United Airlines

7.4

Good

8,916 reviews

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

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 49% 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 $1,128). 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

Oeiras

Nazaré

Ericeira

Costa da Caparica

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Sesimbra

Colares

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Other flights to Lisbon

Top airline flying from Ontario to Lisbon

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$568	Average$1,175	FlexibilityNo cancel fee	On-time69%

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$325+ 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 11/16. 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

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 agosto 14, 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 agosto 14, 2025.

Cheapflights Fare Finder

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

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?

Reviews of airlines servicing Lisbon

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.

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

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 Lisbon?

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

See prices for flight routes from nearby airports that may be better suited for you.

Top airline 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 agosto 14, 2025.