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Cheap flights from Cardiff to Ontario from £177

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 14/8. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — YYZ
11 Aug — 18 Aug1
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 12 July 2026.

Tue 25/823:15
CWL
-
YYZ
2 stops23h 00m
Multiple Airlines
Mon 31/821:35
YYZ
-
CWL
1 stop20h 15m
Multiple Airlines
Deal found 10/7£311
Wed 2/923:50
CWL
-
YYZ
2 stops20h 10m
Multiple Airlines
Tue 8/921:35
YYZ
-
CWL
1 stop20h 50m
Multiple Airlines
Deal found 7/7£327
Thu 3/911:35
CWL
-
YYZ
Nonstop8h 10m
WestJet
Mon 7/922:10
YYZ
-
CWL
Nonstop7h 05m
WestJet
Deal found 8/7£329
Thu 3/922:50
CWL
-
YYZ
1 stop21h 05m
Multiple Airlines
Tue 8/921:35
YYZ
-
CWL
1 stop20h 50m
Multiple Airlines
Deal found 7/7£335
Thu 3/922:50
CWL
-
YYZ
1 stop21h 05m
Multiple Airlines
Wed 9/921:55
YYZ
-
CWL
2 stops19h 30m
Multiple Airlines
Deal found 7/7£336
Wed 2/923:50
CWL
-
YYZ
2 stops20h 10m
Multiple Airlines
Wed 9/922:10
YYZ
-
CWL
Nonstop7h 05m
Multiple Airlines
Deal found 7/7£351
Tue 1/911:35
CWL
-
YYZ
Nonstop8h 10m
Multiple Airlines
Wed 9/921:55
YYZ
-
CWL
2 stops43h 25m
Multiple Airlines
Deal found 7/7£352
Thu 20/822:50
CWL
-
YYZ
1 stop21h 05m
Multiple Airlines
Tue 25/821:55
YYZ
-
CWL
2 stops19h 55m
Multiple Airlines
Deal found 10/7£355

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 12 July 2026.

Round-trip from

£307

One-way from

£177

Popular in

December

Cheapest in

July

Average price

£404

Good round-trip deal

£374 or less

Good one-way deal

£134 or less
26/8-31/8
  • 26/8-31/8
  • 3 total stops
  • 39h 40m total
  • Cardiff to Ontario
Search Deals
14/8
  • 14/8
  • 1 total stop
  • 20h 15m total
  • Cardiff to Ontario
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£158 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 11% potential price decrease (£46 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 12 July 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

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Tue 25/8

11:00-17:15

3 stops35h 15m

Toronto Pearson Intl

Mon 31/8

22:55-22:50

1 stop18h 55m

£428

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Sun 23/8

21:45-10:00

2 stops41h 15m

Toronto Pearson Intl

Sun 30/8

22:10-10:15

Nonstop7h 05m

£432

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Sat 10/10

07:30-15:50

1 stop13h 20m

Toronto Pearson Intl

Sat 17/10

23:55-21:20

1 stop16h 25m

£433

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Sun 11/10

21:45-15:50

1 stop23h 05m

Toronto Pearson Intl

Sat 17/10

21:35-21:20

1 stop18h 45m

£454

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Wed 2/9

09:45-23:18

2 stops18h 33m

Toronto Pearson Intl

Tue 8/9

18:10-16:45

2 stops17h 35m

£663

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Wed 2/9

09:45-23:18

2 stops18h 33m

Toronto Pearson Intl

Thu 10/9

18:10-16:45

2 stops17h 35m

£663

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Wed 2/9

09:45-23:18

2 stops18h 33m

Toronto Pearson Intl

Wed 9/9

12:15-09:15

2 stops16h 00m

£678
Fastest return journey

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Thu 8/10

09:45-19:55

1 stop15h 10m

Toronto Pearson Intl

Fri 16/10

16:45-09:15

1 stop11h 30m

£686

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Thu 3/9

09:45-23:03

2 stops18h 18m

Toronto Pearson Intl

Tue 8/9

18:10-16:45

2 stops17h 35m

£693

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Fri 7/8

17:45-10:00

3 stops45h 15m

Toronto Pearson Intl

Fri 14/8

16:15-09:15

3 stops36h 00m

£694

Flights are sorted by cheapest return flights first.

Deals found on 8/7

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 12 July 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 1 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 12 July 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
1,537 reviews
Check prices

Boarding

7.8

Overall

7.8

Food

7.3

Crew

8.4

Entertainment

7.2

Comfort

7.7

Reviews

1 / 20
10.0
Excellent

Bobby,Sept 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent
KLM
7.8
Good
1,537 reviews
KLM
7.8
Good
1,537 reviews
Check prices

Boarding

7.8

Overall

7.8

Food

7.3

Crew

8.4

Entertainment

7.2

Comfort

7.7

Reviews

1 / 20
10.0
Excellent

Bobby,Sept 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent
WestJet
7.2
Good
3,409 reviews
KLM
7.8
Good
1,537 reviews
Check prices

Boarding

7.8

Overall

7.8

Food

7.3

Crew

8.4

Entertainment

7.2

Comfort

7.7

Reviews

1 / 20
10.0
Excellent

Bobby,Sept 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent

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.

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

    Looking at all options, your cheapest flight can be booked for £132. While the most popular route (Cardiff Wales - Toronto Pearson Intl) can be booked for £353 on average, our data indicates £490 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 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 12 July 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest£310Average£431FlexibilityNo cancel feeOn-time60%
Search WestJet 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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