Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Cardiff to Ontario from £164

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
12 Sep — 19 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 13 August 2026.

Mon 7/922:10 -
1 stop20h 10m
Wed 9/921:35 -
1 stop19h 50m
Deal found 13/8£338
Mon 7/922:10 -
1 stop20h 10m
Mon 14/922:15 -
2 stops19h 35m
Deal found 12/8£342
Thu 10/911:35 -
Nonstop8h 10m
Thu 17/921:35 -
1 stop28h 20m
Deal found 11/8£372
Mon 24/811:35 -
Nonstop8h 10m
Thu 17/921:35 -
1 stop28h 20m
Deal found 12/8£378
Mon 24/811:35 -
Nonstop8h 10m
Wed 16/921:35 -
1 stop19h 50m
Deal found 12/8£381
Mon 24/811:35 -
Nonstop8h 10m
Mon 14/922:15 -
2 stops19h 35m
Deal found 12/8£384
Mon 24/811:35 -
Nonstop8h 10m
Tue 15/922:15 -
2 stops20h 10m
Deal found 12/8£401

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 13 August 2026.

Round-trip from

£342

One-way from

£210

Popular in

December

Cheapest in

September

Average price

£516

Good round-trip deal

£522 or less

Good one-way deal

£200 or less
7/9-14/9
  • 7/9-14/9
  • 3 total stops
  • 39h 45m total
  • Cardiff to Ontario
Search Deals
WestJet
  • WestJet
  • 22/8
  • Nonstop
  • 8h 10m total
  • Cardiff to Ontario
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£169 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 August 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 13 August 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 Cardiff Wales - YYZ Toronto Pearson Intl

CWLYYZ

Cardiff Wales

Mon 7/9

22:10-13:20

1 stop20h 10m

Toronto Pearson Intl

Wed 9/9

21:35-22:25

1 stop19h 50m

£338

CardiffToronto

CWL Cardiff Wales - YYZ Toronto Pearson Intl

CWLYYZ

Cardiff Wales

Wed 9/9

23:50-15:00

2 stops20h 10m

Toronto Pearson Intl

Wed 16/9

21:35-22:25

1 stop19h 50m

£438

CardiffToronto

CWL Cardiff Wales - YYZ Toronto Pearson Intl

CWLYYZ

Cardiff Wales

Thu 10/9

22:50-15:40

2 stops21h 50m

Toronto Pearson Intl

Thu 17/9

21:35-22:20

1 stop19h 45m

£441
Fastest return journey

CardiffToronto

CWL Cardiff Wales - YYZ Toronto Pearson Intl

CWLYYZ

Cardiff Wales

Mon 7/9

11:35-14:45

Nonstop8h 10m

Toronto Pearson Intl

Wed 9/9

22:10-10:15

Nonstop7h 05m

£446

CardiffToronto

CWL Cardiff Wales - YYZ Toronto Pearson Intl

CWLYYZ

Cardiff Wales

Wed 16/9

17:15-19:10

3 stops30h 55m

Toronto Pearson Intl

Tue 22/9

20:45-09:15

3 stops31h 30m

£717

CardiffToronto

CWL Cardiff Wales - YYZ Toronto Pearson Intl

CWLYYZ

Cardiff Wales

Tue 25/8

23:15-21:45

2 stops27h 30m

Toronto Pearson Intl

Fri 28/8

21:55-11:30

2 stops32h 35m

£797

CardiffToronto

CWL Cardiff Wales - YYZ Toronto Pearson Intl

CWLYYZ

Cardiff Wales

Tue 8/9

09:45-17:35

2 stops36h 50m

Toronto Pearson Intl

Tue 15/9

16:45-09:15

1 stop11h 30m

£815

CardiffToronto

CWL Cardiff Wales - YYZ Toronto Pearson Intl

CWLYYZ

Cardiff Wales

Fri 11/12

10:20-15:40

1 stop10h 20m

Toronto Pearson Intl

Thu 31/12

06:00-09:50

2 stops22h 50m

£837

CardiffToronto

CWL Cardiff Wales - YYZ Toronto Pearson Intl

CWLYYZ

Cardiff Wales

Fri 4/9

09:45-19:55

1 stop15h 10m

Toronto Pearson Intl

Fri 11/9

21:55-17:05

1 stop14h 10m

£845
Cheapest one-way
Fastest single journey

CardiffToronto

CWL Cardiff Wales - YYZ Toronto Pearson Intl

CWLYYZ

Cardiff Wales

Tue 8/9

11:35-14:45

Nonstop8h 10m

£206

Flights are sorted by cheapest return flights first.

Deals found on 13/8

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 13 August 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 £428 and £654 in September.
The cheapest return price found within the last 5 days was £338 on Multiple Airlines (7 Sept–9 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 13 August 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
1,557 reviews
Check prices

Entertainment

7.2

Crew

8.4

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

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
1,557 reviews
KLM
7.8
Good
1,557 reviews
Check prices

Entertainment

7.2

Crew

8.4

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

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
3,433 reviews
KLM
7.8
Good
1,557 reviews
Check prices

Entertainment

7.2

Crew

8.4

Boarding

7.8

Food

7.3

Comfort

7.7

Overall

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 £132. While the most popular route (Cardiff Wales - Toronto Pearson Intl) can be booked for £342 on average, our data indicates £493 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 13 August 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest£306Average£430FlexibilityNo cancel feeOn-time60%
Search WestJet flights
KLMCheapest£542Average£783FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.