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Cheap flights from London Gatwick Airport to Ontario from £321

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ONT
15 Mar — 22 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Gatwick to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Gatwick to Ontario
Explore the most affordable flight options available from Gatwick to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 February 2026.

Mon 31/812:20
LGW
-
ONT
2 stops41h 08m
American Airlines
Sun 20/920:02
ONT
-
LGW
2 stops28h 38m
American Airlines
Deal found 10/2£393
Fri 15/511:30
LGW
-
ONT
2 stops20h 16m
Iberia
Fri 5/614:18
ONT
-
LGW
2 stops21h 42m
Iberia
Deal found 13/2£495
Wed 1/410:25
LGW
-
ONT
2 stops20h 09m
Delta
Mon 20/407:00
ONT
-
LGW
2 stops24h 45m
Delta
Deal found 10/2£502
Wed 29/411:30
LGW
-
ONT
2 stops20h 16m
Iberia
Wed 20/514:08
ONT
-
LGW
2 stops45h 52m
Iberia
Deal found 10/2£549
Wed 13/511:30
LGW
-
ONT
2 stops20h 16m
Iberia
Wed 3/612:40
ONT
-
LGW
2 stops23h 20m
Iberia
Deal found 11/2£551
Tue 28/420:40
LGW
-
ONT
2 stops35h 06m
Iberia
Wed 20/514:08
ONT
-
LGW
2 stops45h 52m
Iberia
Deal found 10/2£557
Thu 30/411:30
LGW
-
ONT
2 stops20h 16m
Iberia
Wed 20/514:08
ONT
-
LGW
2 stops45h 52m
Iberia
Deal found 10/2£560
Thu 14/511:30
LGW
-
ONT
2 stops20h 16m
Iberia
Thu 4/614:18
ONT
-
LGW
2 stops21h 42m
Iberia
Deal found 12/2£571
Sat 28/219:40
LGW
-
ONT
2 stops34h 49m
British Airways
Fri 20/307:00
ONT
-
LGW
2 stops29h 00m
British Airways
Deal found 10/2£577
Wed 1/711:30
LGW
-
ONT
2 stops20h 29m
Iberia
Mon 20/714:22
ONT
-
LGW
2 stops21h 38m
Iberia
Deal found 10/2£609
Tue 29/910:35
LGW
-
ONT
2 stops19h 21m
Delta
Tue 20/1012:00
ONT
-
LGW
2 stops20h 00m
Delta
Deal found 10/2£613
Tue 30/620:40
LGW
-
ONT
2 stops55h 12m
Iberia
Mon 20/714:22
ONT
-
LGW
2 stops21h 38m
Iberia
Deal found 10/2£617

Find flight deals from Gatwick to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to Ontario (ONT). 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 13 February 2026.

Round-trip from

£502

One-way from

£321

Popular in

December

Cheapest in

September

Average price

£390
Delta
  • Delta
  • 1/4-20/4
  • 4 total stops
  • 44h 54m total
  • London to Ontario
Search Deals
3/3
  • 3/3
  • 3 total stops
  • 45h 04m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£22 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Gatwick 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 February 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Ontario that are best for you.

Fly from

Gatwick

Fly to

Ontario

Route

Depart

Return

Price

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 15/5

11:30-23:46

2 stops20h 16m

Ontario

Fri 5/6

14:18-20:00

2 stops21h 42m

£495

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 1/4

10:25-22:34

2 stops20h 09m

Ontario

Mon 20/4

07:00-15:45

2 stops24h 45m

£502

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 13/5

11:30-23:46

2 stops20h 16m

Ontario

Wed 3/6

12:40-20:00

2 stops23h 20m

£551

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 28/4

20:40-23:46

2 stops35h 06m

Ontario

Wed 20/5

14:08-20:00

2 stops45h 52m

£557

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 14/5

11:30-23:46

2 stops20h 16m

Ontario

Thu 4/6

14:18-20:00

2 stops21h 42m

£571

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 28/2

19:40-22:29

2 stops34h 49m

Ontario

Fri 20/3

07:00-19:00

2 stops29h 00m

£577

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 30/6

20:40-19:52

2 stops55h 12m

Ontario

Mon 20/7

14:22-20:00

2 stops21h 38m

£617

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 29/7

10:25-12:49

2 stops34h 24m

Ontario

Thu 20/8

11:55-16:00

2 stops20h 05m

£847

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 13/3

11:45-13:48

2 stops33h 03m

Ontario

Fri 3/4

14:39-20:00

2 stops21h 21m

£853

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 30/5

10:25-21:54

2 stops19h 29m

Ontario

Sat 20/6

14:00-09:25

2 stops35h 25m

£924

Flights are sorted by cheapest return flights first.

Deals found on 9/2

Showing 1-10 of 22 results
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Best time to book a flight from Gatwick to Ontario

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

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

Currently, September is the cheapest month in which you can book a flight from London Gatwick Airport to Ontario (average of £235). Flying from London Gatwick Airport to Ontario in December is currently the most expensive (average of £444). 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.

Related info for your journey

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

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Ontario from London Gatwick. Booking flights from London Gatwick to Ontario (ONT) should be relatively easy as there are 0 daily inbound flights from London Gatwick from 0 different airlines.

  • How long is the flight from London Gatwick Airport to Ontario?

    Departing from London Gatwick Airport to Ontario will take you 20h 09m. Airlines will cover a distance of 5430 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Gatwick 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.

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

    Currently, September is the cheapest month in which you can book a flight from London Gatwick Airport to Ontario (average of £235). Flying from London Gatwick Airport to Ontario in December is currently the most expensive (average of £444). 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

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Alternative routes for Gatwick to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 Gatwick to Ontario?

Cheapflights makes it easy to find Gatwick to Ontario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Gatwick to Ontario?

Millions of users choose and trust Cheapflights to book the best flight deals from Gatwick to Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Need flexible booking options for your flight to Ontario from Gatwick? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on Gatwick to Ontario 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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