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Cheap flights from Cardiff to Ontario from £252

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — YYZ
16 Jul — 23 Jul1
1 adult

Cheap flight deals from Cardiff to Ontario

Keep the following information in mind while searching for Cardiff to Ontario flight deals. Data was last updated 11 July 2025.

Round-trip from

£541

One-way from

£252

Popular in

July

Cheapest in

March

Average price

£991
KLM
  • KLM
  • 3/9-8/9
  • 2 total stops
  • 55h 10m total
  • Cardiff to Ontario
Search Deals
1/10
  • 1/10
  • 3 total stops
  • 25h 40m total
  • Cardiff to Ontario
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£127 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Cardiff to Ontario

Cheapest flights from Cardiff to Ontario
Explore the most affordable flight options available from Cardiff to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Wed 3/917:15CWL - YYZ
1 stop25h 05mKLM
Mon 8/922:10YYZ - CWL
1 stop30h 05mKLM
Deal found 10/7£541
Wed 3/909:50CWL - YYZ
2 stops18h 21mDelta
Mon 8/918:19YYZ - CWL
2 stops17h 26mDelta
Deal found 10/7£565
Sat 9/809:00CWL - YYZ
1 stop11h 50mMultiple Airlines
Sat 16/818:20YYZ - CWL
1 stop11h 15mMultiple Airlines
Deal found 11/7£752
Sat 9/809:45CWL - YYZ
2 stops18h 29mVirgin Atlantic
Sat 16/806:30YYZ - CWL
2 stops21h 45mVirgin Atlantic
Deal found 10/7£781

Cheapflights Fare Finder

Customise your flight search to find flights from Cardiff 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 858,174 searches. Data last updated 11 July 2025.
Use the filters below to find and compare flights from Cardiff to Ontario that are best for you.

Fly from

Cardiff

Fly to

Ontario

Route

Depart

Return

Price

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Wed 3/9

17:15-13:20

1 stop25h 05m

Toronto Pearson Intl

Mon 8/9

22:10-09:15

1 stop30h 05m

£541

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Wed 3/9

09:50-23:11

2 stops18h 21m

Toronto Pearson Intl

Mon 8/9

18:19-16:45

2 stops17h 26m

£565

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Sat 9/8

09:00-15:50

1 stop11h 50m

Toronto Pearson Intl

Sat 16/8

18:20-10:35

1 stop11h 15m

£752

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Sat 9/8

09:45-23:14

2 stops18h 29m

Toronto Pearson Intl

Sat 16/8

06:30-09:15

2 stops21h 45m

£781

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Wed 1/10

20:30-17:10

3 stops25h 40m

£252

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Wed 16/7

09:50-19:55

1 stop15h 05m

£1,208

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Best time to book a flight from Cardiff to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Cardiff with our price prediction graph.
Estimated return 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 Cardiff to Ontario

What is the cheapest month to book a flight from Cardiff to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from Cardiff to Region of Ontario (average of £490). Flying from Cardiff to Region of Ontario in July is currently the most expensive (average of £708). 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 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 11 July 2025.
Check out reviews from past customers who have flown with Delta, KLM, andVirgin Atlantic from Cardiff to Ontario to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,951 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Delta
8.0
Very Good
7,951 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
KLM
7.8
Good
1,372 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Virgin Atlantic
7.4
Good
654 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Related info for your journey

Find useful and relevant information for your journey from Cardiff 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 from for flights from Cardiff to Ontario?

    Cardiff Wales (CWL) is the airport you will fly out of if you book a flight from Cardiff to Ontario. It is only a 9.1 mi journey to Cardiff Wales (CWL) from Cardiff’s city center.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Cardiff 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 Cardiff to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Cardiff to Region of Ontario (average of £490). Flying from Cardiff to Region of Ontario in July is currently the most expensive (average of £708). 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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Top airline flying from Cardiff to Ontario

Discover the top airline that operate flights from Cardiff 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 858,174 searches. Data last updated 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£457Average£658FlexibilityNo cancel feeOn-time75%
Search KLM flights

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How does Cheapflights help users find flights from Cardiff to Ontario?

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Why should you use Cheapflights to find cheap flight tickets from Cardiff to Ontario?

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Can Cheapflights find flights from Cardiff to Ontario with no change fees?

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