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Ontario

$669+ Cheap flights from Portugal to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — ONT
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
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Cheap flight deals from Portugal to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Portugal (PT0) to Ontario (ONT). 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 enero 21, 2025.

Round-trip from

$669
(Delta)
From Portugal to Ontario
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Find flight deals from Portugal to Ontario

Cheapest flights from Portugal to Ontario
Explore the most affordable flight options available from Portugal to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 21, 2025.

This Delta deal was found by Cheapflights users on 1/21. 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.
jue. 5/155:40 amLIS - ONT
2 stops25h 00mDelta
mar. 5/276:00 amONT - LIS
2 stops24h 50mDelta
Deal found 1/21$669
This KLM deal was found by Cheapflights users on 1/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/195:00 amLIS - ONT
2 stops25h 40mKLM
mié. 5/281:30 pmONT - LIS
2 stops21h 10mKLM
Deal found 1/21$687
This Netflights deal was found by Cheapflights users on 1/21. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/137:00 amLIS - ONT
2 stops23h 04mBritish Airways
mar. 2/184:25 pmONT - LIS
2 stops21h 20mBritish Airways
Deal found 1/21$713
This United Airlines deal was found by Cheapflights users on 1/21. 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.
jue. 2/66:10 amLIS - ONT
2 stops19h 47mUnited Airlines
mar. 2/116:00 amONT - LIS
2 stops18h 10mUnited Airlines
Deal found 1/21$792
This British Airways deal was found by Cheapflights users on 1/20. 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.
lun. 2/36:05 pmFAO - ONT
2 stops32h 32mBritish Airways
dom. 2/910:49 amONT - FAO
2 stops22h 26mBritish Airways
Deal found 1/20$835
This Iberia deal was found by Cheapflights users on 1/21. 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.
jue. 5/1510:10 pmLIS - ONT
2 stops29h 47mIberia
mié. 5/283:00 pmONT - LIS
2 stops56h 45mIberia
Deal found 1/21$868
This Ovago deal was found by Cheapflights users on 1/21. 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.
dom. 5/187:20 amLIS - ONT
2 stops22h 20mMultiple Airlines
mié. 5/2810:54 amONT - LIS
2 stops16h 56mMultiple Airlines
Deal found 1/21$905
This Iberia deal was found by Cheapflights users on 1/21. 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.
mié. 4/238:00 pmFAO - ONT
2 stops34h 11mMultiple Airlines
sáb. 5/310:51 amONT - FAO
2 stops23h 24mMultiple Airlines
Deal found 1/21$1,112

Find flights from Portugal to Ontario within your budget

Customize your flight search to find flights from Portugal to Ontario 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 enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

jue. 5/15

5:40 am-10:40 pm

2 stops25h 00m

Ontario

mar. 5/27

6:00 am-2:50 pm

2 stops24h 50m

$669

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

lun. 5/19

5:00 am-10:40 pm

2 stops25h 40m

Ontario

mié. 5/28

1:30 pm-6:40 pm

2 stops21h 10m

$687

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

jue. 2/13

7:00 am-10:04 pm

2 stops23h 04m

Ontario

mar. 2/18

4:25 pm-9:45 pm

2 stops21h 20m

$713

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

jue. 2/6

6:10 am-5:57 pm

2 stops19h 47m

Ontario

mar. 2/11

6:00 am-8:10 am

2 stops18h 10m

$792

FaroOntario

FAO - ONT

FAOONT

Faro

lun. 2/3

6:05 pm-6:37 pm

2 stops32h 32m

Ontario

dom. 2/9

10:49 am-5:15 pm

2 stops22h 26m

$835

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

jue. 5/15

10:10 pm-7:57 pm

2 stops29h 47m

Ontario

mié. 5/28

3:00 pm-7:45 am

2 stops56h 45m

$868

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

dom. 5/18

7:20 am-9:40 pm

2 stops22h 20m

Ontario

mié. 5/28

10:54 am-11:50 am

2 stops16h 56m

$905

FaroOntario

FAO - ONT

FAOONT

Faro

mié. 4/23

8:00 pm-10:11 pm

2 stops34h 11m

Ontario

sáb. 5/3

10:51 am-6:15 pm

2 stops23h 24m

$1,112

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

vie. 5/30

12:30 pm-11:35 pm

2 stops19h 05m

$672

LisbonOntario

LIS - ONT

LISONT

Lisbon Humberto Delgado

mar. 3/4

11:10 am-9:02 pm

2 stops17h 52m

$678

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 17 results
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Best time to book a flight from Portugal to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Portugal 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.

Travel insights for flights from Portugal to Ontario

Get recent, data-driven insights about flights from Portugal to Ontario including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Portugal to Ontario (average of $246). Flying from Portugal to Ontario in March is currently the most expensive (average of $310). 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.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated enero 21, 2025.
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,984 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Canada
7.0
Good
8,633 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Portugal to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Portugal?

    If you book a flight to Ontario from Portugal, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

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

    The cheapest airlines for a one-way flight from Portugal to Ontario are Iberia ($672), American Airlines ($678), and British Airways ($730).

  • What are the most popular routes from Portugal to Ontario?

    The most popular route from Portugal to Ontario is Lisbon Humberto Delgado - Ontario. You may also consider Faro - Ontario or Ponta Delgada Nordela - Ontario.

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

    Yes. In addition to deals on Portugal to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portugal to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Ontario.

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

    Yes. Cheapflights offers flight deals from Portugal to Ontario 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 Portugal to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Portugal to Ontario (average of $246). Flying from Portugal to Ontario in March is currently the most expensive (average of $310). 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

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Alternative routes for Portugal to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Portugal to Ontario

Discover the top airline that operate flights from Portugal to Ontario. 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 enero 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$744Average$879FlexibilityNo cancel feeOn-time75%
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