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Cheap flights from Cardiff to Ontario from £128

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 25/8. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — YYZ
17 Aug — 24 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 18 July 2026.

Tue 25/823:15
CWL
-
YYZ
2 stops23h 00m
Multiple Airlines
Mon 31/822:55
YYZ
-
CWL
1 stop18h 55m
Multiple Airlines
Deal found 17/7£303
Thu 3/911:35
CWL
-
YYZ
Nonstop8h 10m
WestJet
Wed 9/922:10
YYZ
-
CWL
Nonstop7h 05m
WestJet
Deal found 16/7£320
Thu 3/911:35
CWL
-
YYZ
Nonstop8h 10m
WestJet
Mon 7/922:10
YYZ
-
CWL
Nonstop7h 05m
WestJet
Deal found 17/7£324
Tue 1/923:15
CWL
-
YYZ
2 stops23h 00m
Multiple Airlines
Wed 16/921:35
YYZ
-
CWL
1 stop19h 50m
Multiple Airlines
Deal found 15/7£326
Fri 4/922:45
CWL
-
YYZ
2 stops28h 00m
Multiple Airlines
Wed 16/921:35
YYZ
-
CWL
1 stop19h 50m
Multiple Airlines
Deal found 15/7£328
Mon 24/822:10
CWL
-
YYZ
1 stop21h 45m
Multiple Airlines
Wed 26/821:35
YYZ
-
CWL
1 stop19h 50m
Multiple Airlines
Deal found 15/7£328
Wed 16/923:50
CWL
-
YYZ
2 stops22h 20m
Multiple Airlines
Thu 24/921:35
YYZ
-
CWL
1 stop19h 45m
Multiple Airlines
Deal found 17/7£329
Wed 16/923:50
CWL
-
YYZ
2 stops20h 10m
Multiple Airlines
Wed 23/921:35
YYZ
-
CWL
1 stop19h 50m
Multiple Airlines
Deal found 17/7£331
Wed 16/923:50
CWL
-
YYZ
1 stop18h 30m
Multiple Airlines
Mon 21/918:20
YYZ
-
CWL
2 stops23h 30m
Multiple Airlines
Deal found 17/7£333
Wed 16/923:50
CWL
-
YYZ
2 stops20h 10m
Multiple Airlines
Sat 19/921:35
YYZ
-
CWL
1 stop18h 45m
Multiple Airlines
Deal found 17/7£336

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 18 July 2026.

Round-trip from

£303

One-way from

£128

Popular in

December

Cheapest in

July

Average price

£402

Good round-trip deal

£402 or less

Good one-way deal

£133 or less
25/8-31/8
  • 25/8-31/8
  • 3 total stops
  • 41h 55m total
  • Cardiff to Ontario
Search Deals
25/8
  • 25/8
  • 2 total stops
  • 27h 30m total
  • Cardiff to Ontario
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£157 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease (£45 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 18 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

Wed 26/8

23:15-15:00

2 stops20h 45m

Toronto Pearson Intl

Mon 31/8

22:10-10:15

Nonstop7h 05m

£436
Fastest return journey

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Thu 3/9

11:35-14:45

Nonstop8h 10m

Toronto Pearson Intl

Thu 17/9

23:55-22:20

1 stop17h 25m

£472

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Wed 12/8

23:15-13:40

2 stops19h 25m

Toronto Pearson Intl

Wed 19/8

23:55-22:25

1 stop17h 30m

£485

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Thu 3/9

11:35-14:45

Nonstop8h 10m

Toronto Pearson Intl

Tue 8/9

23:55-08:35

3 stops27h 40m

£508

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Tue 11/8

11:35-14:45

Nonstop8h 10m

Toronto Pearson Intl

Wed 19/8

11:00-22:25

2 stops30h 25m

£511

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Wed 2/9

23:50-21:45

2 stops26h 55m

Toronto Pearson Intl

Tue 8/9

07:25-23:25

3 stops35h 00m

£523

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Fri 31/7

22:45-13:40

2 stops19h 55m

Toronto Pearson Intl

Mon 3/8

22:55-22:50

1 stop18h 55m

£557

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Sat 15/8

07:30-11:00

2 stops32h 30m

Toronto Pearson Intl

Wed 19/8

22:10-10:15

Nonstop7h 05m

£559

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Fri 14/8

15:35-11:00

2 stops24h 25m

Toronto Pearson Intl

Wed 19/8

23:55-22:25

1 stop17h 30m

£581

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Sat 7/11

08:15-18:15

2 stops15h 00m

Toronto Pearson Intl

Sat 14/11

17:20-13:55

1 stop15h 35m

£653

Flights are sorted by cheapest return flights first.

Deals found on 18/7

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 18 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 21 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 18 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
1,542 reviews
Check prices

Entertainment

7.2

Overall

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Boarding

7.8

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
1,542 reviews
KLM
7.8
Good
1,542 reviews
Check prices

Entertainment

7.2

Overall

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Boarding

7.8

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
3,411 reviews
KLM
7.8
Good
1,542 reviews
Check prices

Entertainment

7.2

Overall

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Boarding

7.8

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 £131. While the most popular route (Cardiff Wales - Toronto Pearson Intl) can be booked for £308 on average, our data indicates £487 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

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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 18 July 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest£309Average£430FlexibilityNo cancel feeOn-time60%
Search WestJet flights
KLMCheapest£544Average£786FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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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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