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Cheap flights from Ontario to London Gatwick Airport from £295

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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LGW
9 Jul — 16 Jul1
1 adult

Cheap flight deals from Ontario to Gatwick

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Gatwick (LGW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 4 July 2025.

Round-trip from

£601

One-way from

£295

Popular in

December

Cheapest in

October

Average price

£596
Iberia
  • Iberia
  • 17/8-24/8
  • 4 total stops
  • 56h 57m total
  • Ontario to London
KLM
  • KLM
  • 4/8
  • 2 total stops
  • 18h 55m total
  • Ontario to London
Highest demand for flights based on searches. 9% potential increase in price (£40 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£12 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Ontario to Gatwick

Cheapest flights from Ontario to Gatwick
Explore the most affordable flight options available from Ontario to Gatwick. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Sun 17/814:31ONT - LGW
2 stops36h 24mIberia
Sun 24/811:35LGW - ONT
2 stops20h 33mIberia
Deal found 3/7£601
Fri 1/807:05ONT - LGW
2 stops18h 55mKLM
Sun 31/812:00LGW - ONT
2 stops39h 11mKLM
Deal found 3/7£702
Tue 12/814:21ONT - LGW
2 stops16h 19mMultiple Airlines
Tue 19/813:00LGW - ONT
2 stops19h 15mMultiple Airlines
Deal found 2/7£777
Wed 9/707:05ONT - LGW
2 stops18h 55mDelta
Wed 16/712:00LGW - ONT
2 stops19h 42mDelta
Deal found 2/7£939
Thu 3/710:54ONT - LGW
2 stops25h 06mBritish Airways
Thu 10/711:35LGW - ONT
2 stops19h 22mBritish Airways
Deal found 2/7£4,160

Cheapflights Fare Finder

Customise your flight search to find flights from Ontario to Gatwick 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 4 July 2025.
Use the filters below to find and compare flights from Ontario to London Gatwick Airport that are best for you.

Fly from

Ontario

Fly to

Gatwick

Route

Depart

Return

Price

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sun 17/8

14:31-10:55

2 stops36h 24m

London Gatwick

Sun 24/8

11:35-00:08

2 stops20h 33m

£601

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Fri 1/8

07:05-10:00

2 stops18h 55m

London Gatwick

Sun 31/8

12:00-19:11

2 stops39h 11m

£702

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 12/8

14:21-14:40

2 stops16h 19m

London Gatwick

Tue 19/8

13:00-00:15

2 stops19h 15m

£777

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sat 9/8

07:05-10:00

2 stops18h 55m

London Gatwick

Fri 22/8

12:00-23:40

2 stops19h 40m

£975

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Mon 4/8

07:05-10:00

2 stops18h 55m

£295

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 8/10

07:02-17:55

2 stops26h 53m

£306

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sun 13/7

07:05-10:00

2 stops18h 55m

£365

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sun 21/9

14:30-20:00

2 stops21h 30m

£401

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 16/7

12:00-11:45

2 stops15h 45m

£1,495

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Best time to book a flight from Ontario to Gatwick

Have a flexible travel schedule? Discover the best time to fly to Gatwick from Ontario 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 Ontario to London Gatwick Airport

What is the cheapest month to book a flight from Ontario to London Gatwick Airport?

Currently, April is the cheapest month in which you can book a flight from Ontario to London Gatwick Airport (average of £102). Flying from Ontario to London Gatwick Airport in July is currently the most expensive (average of £142). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Gatwick

Get insights into the airlines that provide service to Gatwick. 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 Gatwick. Reviews last updated 4 July 2025.
Get a feel of what it's like to fly with Delta, KLM, andIcelandair from Ontario to London Gatwick Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very Good

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Gatwick. 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 Ontario to London Gatwick?

    Most people fly from Ontario (ONT) if they book a flight from Ontario to London Gatwick. On average, Ontario has 0 outbound flights to London Gatwick per day from 0 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • What are the cheapest airlines flying from Ontario to London Gatwick Airport round-trip?

    According to our current data, Iberia (£601), KLM (£702), and Delta (£975) offers the cheapest pricing from Ontario to London Gatwick Airport.

  • What are the cheapest airlines to fly from Ontario to London Gatwick Airport one-way?

    The cheapet airlines for a one-way flight from Ontario to London Gatwick Airport are KLM (£295), Delta (£365), and Iberia (£401).

  • Can I find deals for flights from Ontario to Gatwick that include hotel bookings?

    Yes. In addition to deals on Ontario to Gatwick flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Gatwick?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Gatwick.

  • Can I find deals for business class flights from Ontario to Gatwick?

    Yes. Cheapflights offers flight deals from Ontario to Gatwick by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to London Gatwick Airport?

    Currently, April is the cheapest month in which you can book a flight from Ontario to London Gatwick Airport (average of £102). Flying from Ontario to London Gatwick Airport in July is currently the most expensive (average of £142). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Hounslow
Croydon
Milton Keynes
Deal
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Hayes
Folkestone
Southend-on-Sea
Watford
Ipswich
Winchester
Maidstone
Guildford
Chichester

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

Certainly. Search results for flights to Gatwick from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Ontario to Gatwick flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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