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Cheap flights from Cardiff to Ontario from £165

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — YYZ
29 Aug — 5 Sep1
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 30 July 2026.

Tue 22/923:15
CWL
-
YYZ
2 stops20h 45m
Multiple Airlines
Wed 30/921:35
YYZ
-
CWL
1 stop19h 50m
Multiple Airlines
Deal found 26/7£347
Tue 8/923:15
CWL
-
YYZ
1 stop19h 05m
Multiple Airlines
Tue 15/921:35
YYZ
-
CWL
1 stop20h 50m
Multiple Airlines
Deal found 29/7£351
Tue 8/923:15
CWL
-
YYZ
1 stop19h 05m
Multiple Airlines
Wed 16/921:55
YYZ
-
CWL
2 stops19h 30m
Multiple Airlines
Deal found 29/7£360
Thu 27/822:50
CWL
-
YYZ
1 stop21h 05m
Multiple Airlines
Mon 7/921:35
YYZ
-
CWL
1 stop20h 15m
Multiple Airlines
Deal found 25/7£362
Tue 8/911:35
CWL
-
YYZ
Nonstop8h 10m
Multiple Airlines
Sun 13/921:55
YYZ
-
CWL
2 stops43h 55m
Multiple Airlines
Deal found 29/7£363
Tue 8/911:35
CWL
-
YYZ
Nonstop8h 10m
Multiple Airlines
Tue 22/918:15
YYZ
-
CWL
2 stops24h 10m
Multiple Airlines
Deal found 28/7£367
Tue 8/923:15
CWL
-
YYZ
2 stops20h 45m
Multiple Airlines
Mon 14/923:55
YYZ
-
CWL
1 stop17h 55m
Multiple Airlines
Deal found 26/7£375
Tue 8/923:15
CWL
-
YYZ
2 stops20h 45m
Multiple Airlines
Fri 11/922:10
YYZ
-
CWL
Nonstop7h 05m
Multiple Airlines
Deal found 27/7£376

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 30 July 2026.

Round-trip from

£347

One-way from

£165

Popular in

December

Cheapest in

July

Average price

£406

Good round-trip deal

£431 or less

Good one-way deal

£135 or less
22/9-30/9
  • 22/9-30/9
  • 3 total stops
  • 40h 35m total
  • Cardiff to Ontario
Search Deals
22/9
  • 22/9
  • 2 total stops
  • 23h 00m 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 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 30 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
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

£461

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Tue 25/8

23:15-11:25

1 stop17h 10m

Toronto Pearson Intl

Tue 1/9

18:20-23:25

2 stops24h 05m

£463

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Thu 27/8

22:50-14:10

2 stops20h 20m

Toronto Pearson Intl

Thu 3/9

23:55-22:20

1 stop17h 25m

£542

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Mon 17/8

22:10-13:20

1 stop20h 10m

Toronto Pearson Intl

Sun 23/8

22:10-10:15

Nonstop7h 05m

£543

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Tue 1/9

23:15-15:00

2 stops20h 45m

Toronto Pearson Intl

Sun 6/9

22:45-21:45

2 stops18h 00m

£600

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Tue 13/10

17:15-15:50

3 stops27h 35m

Toronto Pearson Intl

Sun 18/10

22:15-21:45

2 stops18h 30m

£614

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Sat 12/12

10:20-15:40

1 stop10h 20m

Toronto Pearson Intl

Thu 17/12

20:30-17:00

2 stops15h 30m

£701

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Fri 4/9

22:45-22:04

3 stops28h 19m

Toronto Pearson Intl

Fri 11/9

15:20-17:05

3 stops20h 45m

£711
Cheapest one-way

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Tue 25/8

23:15-21:45

2 stops27h 30m

£174

CardiffToronto

CWL - YYZ

CWLYYZ

Cardiff Wales

Mon 24/8

22:10-14:10

2 stops21h 00m

£287

Flights are sorted by cheapest return flights first.

Deals found on 26/7

Showing 1-10 of 17 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 30 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?

Airfare is below average for this route at the moment.
Cardiff to Region of Ontario flights typically cost between £433 and £637 in September.
The cheapest return price found within the last 5 days was £347 on Multiple Airlines (22 Sept–30 Sept).

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 30 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
1,551 reviews
Check prices

Overall

7.8

Entertainment

7.2

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
1,551 reviews
KLM
7.8
Good
1,551 reviews
Check prices

Overall

7.8

Entertainment

7.2

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
3,416 reviews
KLM
7.8
Good
1,551 reviews
Check prices

Overall

7.8

Entertainment

7.2

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.

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

    WestJet can get you from Cardiff to Region of Ontario in just under 8h 10m. Your travel time will be generally consistent. Airlines will cover a distance of 3432 mi. Most flights are nonstop.

  • 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 £408 on average, our data indicates £374 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 30 July 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest£312Average£435FlexibilityNo cancel feeOn-time60%
Search WestJet flights
KLMCheapest£550Average£795FlexibilityNo 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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