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Cheap flights from Cardiff to Ontario from £143

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — YYZ
21 Jul — 28 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cardiff to Ontario

Enter your travel dates to find the best prices.

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 21 June 2026.

Mon 22/622:10
CWL
-
YYZ
2 stops24h 00m
Multiple Airlines
Fri 3/722:10
YYZ
-
CWL
Nonstop7h 05m
Multiple Airlines
Deal found 17/6£311
Tue 1/911:35
CWL
-
YYZ
Nonstop8h 10m
WestJet
Mon 7/922:10
YYZ
-
CWL
Nonstop7h 05m
WestJet
Deal found 16/6£313
Tue 1/911:35
CWL
-
YYZ
Nonstop8h 10m
WestJet
Wed 9/922:10
YYZ
-
CWL
Nonstop7h 05m
WestJet
Deal found 16/6£314
Fri 26/622:45
CWL
-
YYZ
1 stop20h 15m
Multiple Airlines
Fri 3/722:10
YYZ
-
CWL
Nonstop7h 05m
Multiple Airlines
Deal found 17/6£316
Tue 7/711:35
CWL
-
YYZ
Nonstop8h 10m
WestJet
Mon 13/722:10
YYZ
-
CWL
Nonstop7h 05m
WestJet
Deal found 20/6£319
Wed 15/723:15
CWL
-
YYZ
1 stop19h 05m
Multiple Airlines
Sun 26/722:10
YYZ
-
CWL
Nonstop7h 05m
Multiple Airlines
Deal found 18/6£320
Thu 2/711:35
CWL
-
YYZ
Nonstop8h 10m
WestJet
Mon 6/722:10
YYZ
-
CWL
Nonstop7h 05m
WestJet
Deal found 19/6£322
Mon 24/822:10
CWL
-
YYZ
1 stop20h 10m
Multiple Airlines
Mon 31/822:55
YYZ
-
CWL
1 stop18h 55m
Multiple Airlines
Deal found 21/6£323
Tue 25/823:15
CWL
-
YYZ
1 stop19h 05m
Multiple Airlines
Mon 31/821:35
YYZ
-
CWL
1 stop20h 15m
Multiple Airlines
Deal found 20/6£324
Thu 3/911:35
CWL
-
YYZ
Nonstop8h 10m
WestJet
Mon 7/922:10
YYZ
-
CWL
Nonstop7h 05m
WestJet
Deal found 20/6£325
Thu 3/911:35
CWL
-
YYZ
Nonstop8h 10m
WestJet
Wed 9/922:10
YYZ
-
CWL
Nonstop7h 05m
WestJet
Deal found 16/6£326

Find flight deals from Cardiff to Ontario

Keep the following information in mind while searching for Cardiff to Ontario flight deals. Data was last updated 21 June 2026.

Round-trip from

£313

One-way from

£143

Popular in

December

Cheapest in

June

Average price

£418

Good round-trip deal

£334 or less

Good one-way deal

£207 or less
WestJet
  • WestJet
  • 1/9-7/9
  • Nonstop
  • 15h 15m total
  • Cardiff to Ontario
Search Deals
WestJet
  • WestJet
  • 3/9
  • Nonstop
  • 8h 10m total
  • Cardiff to Ontario
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£160 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease (£46 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Cardiff Wales to Ontario.
Search Deals
Price to beat on a one-way flight from Cardiff Wales to Ontario.
Search Deals

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 21 June 2026.
Use the filters below to find and compare flights from Cardiff to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Thu 3/9

11:35-14:45

Nonstop8h 10m

Toronto Pearson Intl

Mon 7/9

22:10-10:15

Nonstop7h 05m

£325

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Thu 1/10

09:45-22:59

2 stops18h 14m

Toronto Pearson Intl

Mon 5/10

18:10-16:45

2 stops17h 35m

£624

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Wed 28/10

10:20-16:40

1 stop10h 20m

Toronto Pearson Intl

Sun 1/11

21:15-17:00

2 stops14h 45m

£624

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Wed 30/9

09:45-23:24

2 stops18h 39m

Toronto Pearson Intl

Mon 5/10

18:10-16:45

2 stops17h 35m

£624

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Mon 31/8

09:45-21:00

2 stops16h 15m

Toronto Pearson Intl

Thu 10/9

21:55-09:15

1 stop30h 20m

£655

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Fri 17/7

22:45-17:15

2 stops23h 30m

Toronto Pearson Intl

Fri 24/7

22:10-10:15

Nonstop7h 05m

£666

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Fri 17/7

09:45-21:00

2 stops16h 15m

Toronto Pearson Intl

Fri 24/7

19:24-17:05

2 stops16h 41m

£784

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Thu 9/7

09:45-21:00

2 stops16h 15m

Toronto Pearson Intl

Thu 16/7

18:29-16:45

2 stops17h 16m

£794

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Mon 5/10

17:15-13:20

1 stop25h 05m

Toronto Pearson Intl

Tue 13/10

16:45-09:15

1 stop11h 30m

£874

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Thu 13/8

09:45-21:00

2 stops16h 15m

Toronto Pearson Intl

Fri 21/8

23:30-17:05

2 stops12h 35m

£940

Flights are sorted by cheapest return flights first.

Deals found on 18/6

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 time of day to fly from CWL to ON?

Find hourly flight availability from Cardiff to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 June 2026.

When flying from Cardiff to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Cardiff to Region of Ontario?

How far ahead should I book a flight from Cardiff to Region of Ontario?

The price you pay for your flight from Cardiff to Region of Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 45 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 21 June 2026.
Check out reviews from past customers who have flown with KLM and WestJet 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.
KLM
7.8
Good
1,530 reviews
Check prices

Comfort

7.7

Boarding

7.8

Overall

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,530 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Comfort

7.7

Boarding

7.8

Overall

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
WestJet
7.2
Good
3,375 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Comfort

7.7

Boarding

7.8

Overall

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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.

  • How long is the flight from Cardiff to Region of Ontario?

    WestJet and KLM can get you from Cardiff to Region of Ontario in just under 8h 10m. Your travel time can differ by up to 2h 10m. Airlines will cover a distance of 3432 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest flights from Cardiff to Region of Ontario?

    Looking at all options, your cheapest flight can be booked for £199. While the most popular route (Cardiff Wales - Toronto Pearson Intl) can be booked for £360 on average, our data indicates £305 when flying from Cardiff to Region of Ontario.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Cardiff to Ontario

Discover the top 2 airlines 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 21 June 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest£311Average£443FlexibilityNo cancel feeOn-time60%
Search WestJet flights
KLMCheapest£536Average£719FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for Cardiff to Ontario flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Cardiff to Ontario for you. Better yet — we are completely free to use.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Cardiff to Ontario flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Cardiff to Ontario become cheaper?

Of course! You can now track prices for flights from Cardiff to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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