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

According to our current data, KLM (£506), Iberia (£558), and American Airlines (£622) offers the cheapest pricing from Ontario to London Gatwick Airport.

In terms of precipitation, rainfall in London Gatwick Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Gatwick Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Gatwick Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

How far in advance should I book a flight from Ontario to London Gatwick Airport?

Travelers have found it’s best to book a flight 32 days in advance to save up to 37% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 32 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Ontario to London Gatwick Airport 1-2 weeks in advance for as low as £516, or £715 for flights within the next 24 hours.

What is the cheapest month to fly from Ontario to London Gatwick Airport?

The best pricing can be found in the month of October. Prices to London Gatwick Airport from Ontario average £538. You can even find prices in October for less than £538, as users have found deals to London Gatwick Airport from as low as £337. The month of December appears to be one of the more expensive times to travel to London Gatwick Airport from Ontario. Flying in the targeted month can save you up to 35%.

What is the cheapest time of day to fly from ONT to LGW?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to London Gatwick Airport as you normally would.

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.

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.

£246+ Flights from Ontario to London Gatwick Airport

Cheap flight deals from Ontario to Gatwick

Round-trip from	£506
One-way from	£246
Popular in	December
Cheapest in	October
Average price	£585

KLM
26/8-31/8
4 total stops
58h 06m total
Ontario to London

Search Deals

13/8
2 total stops
26h 58m total
Ontario to London

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£47 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

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 18 7月 2025.

週二 26/807:05ONT - LGW

2 stops18h 55mKLM

週日 31/812:00LGW - ONT

2 stops39h 11mKLM

Deal found 17/7£506

週二 9/908:15ONT - LGW

2 stops27h 45mIberia

週二 7/1011:35LGW - ONT

2 stops19h 07mIberia

Deal found 17/7£558

週三 10/906:10ONT - LGW

2 stops18h 00mAmerican Airlines

週二 7/1012:20LGW - ONT

2 stops52h 36mAmerican Airlines

Deal found 17/7£622

週三 1/1015:06ONT - LGW

2 stops15h 34mMultiple Airlines

週四 30/1011:55LGW - ONT

2 stops18h 45mMultiple Airlines

Deal found 17/7£724

週五 1/807:05ONT - LGW

2 stops18h 55mDelta

週五 8/812:00LGW - ONT

2 stops19h 42mDelta

Deal found 16/7£808

週一 22/1211:00ONT - LGW

2 stops23h 50mBritish Airways

週二 6/111:00LGW - ONT

2 stops43h 02mBritish Airways

Deal found 18/7£1,411

Best flights from Ontario to Gatwick
Discover carefully curated flight deals from Ontario to Gatwick that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 7月 2025.

週二 26/807:05ONT - LGW

2 stops18h 55mKLM

週日 31/812:00LGW - ONT

2 stops39h 11mKLM

Deal found 17/7£506

週二 9/908:15ONT - LGW

2 stops27h 45mIberia

週二 7/1011:35LGW - ONT

2 stops19h 07mIberia

Deal found 17/7£558

週三 10/906:10ONT - LGW

2 stops18h 00mAmerican Airlines

週二 7/1012:20LGW - ONT

2 stops52h 36mAmerican Airlines

Deal found 17/7£622

週三 1/1015:06ONT - LGW

2 stops15h 34mMultiple Airlines

週四 30/1011:55LGW - ONT

2 stops18h 45mMultiple Airlines

Deal found 17/7£724

週五 1/807:05ONT - LGW

2 stops18h 55mDelta

週五 8/812:00LGW - ONT

2 stops19h 42mDelta

Deal found 16/7£808

週一 22/1211:00ONT - LGW

2 stops23h 50mBritish Airways

週二 6/111:00LGW - ONT

2 stops43h 02mBritish Airways

Deal found 18/7£1,411

Last-minute flights from Ontario to Gatwick
Discover last-minute flight deals from Ontario to Gatwick. Data last updated 18 7月 2025 and is based on user searches.

週四 17/714:40ONT - LGW

2 stops21h 20mIberia

週三 23/707:10LGW - ONT

2 stops19h 43mIberia

Deal found 17/7£2,114

週五 1/807:05ONT - LGW

2 stops18h 55mDelta

週五 8/812:00LGW - ONT

2 stops19h 42mDelta

Deal found 16/7£808

週三 6/812:20ONT - LGW

2 stops15h 25mMultiple Airlines

週二 19/813:00LGW - ONT

2 stops19h 15mMultiple Airlines

Deal found 16/7£820

週二 26/807:05ONT - LGW

2 stops18h 55mKLM

週日 31/812:00LGW - ONT

2 stops39h 11mKLM

Deal found 17/7£506

One-way flights from Ontario to Gatwick
Search for one-way flight options from Ontario to Gatwick. Find affordable one-way fares based on user searches. Data last updated 18 7月 2025.

週三 13/819:22ONT - LGW

2 stops26h 58mMultiple Airlines

Deal found 18/7£246

週一 6/1014:46ONT - LGW

2 stops21h 14mIberia

Deal found 16/7£309

週日 27/707:05ONT - LGW

2 stops18h 55mKLM

Deal found 16/7£313

週四 31/707:05ONT - LGW

2 stops18h 55mDelta

Deal found 18/7£350

週六 20/922:35ONT - LGW

2 stops25h 15mAmerican Airlines

Deal found 15/7£375

週一 13/1014:46ONT - LGW

2 stops45h 14mBritish Airways

Deal found 17/7£498

週日 12/1013:31ONT - LGW

2 stops17h 09mIcelandair

Deal found 16/7£1,093

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioLondon

ONT - LGW

ONTLGW

Ontario

週二 26/8

07:05-10:00

2 stops18h 55m

London Gatwick

週日 31/8

12:00-19:11

2 stops39h 11m

£506

OntarioLondon

ONT - LGW

ONTLGW

Ontario

週二 9/9

08:15-20:00

2 stops27h 45m

London Gatwick

週二 7/10

11:35-22:42

2 stops19h 07m

£558

OntarioLondon

ONT - LGW

ONTLGW

Ontario

週三 10/9

06:10-08:10

2 stops18h 00m

London Gatwick

週二 7/10

12:20-08:56

2 stops52h 36m

£622

OntarioLondon

ONT - LGW

ONTLGW

Ontario

週三 1/10

15:06-14:40

2 stops15h 34m

London Gatwick

週四 30/10

11:55-23:40

2 stops18h 45m

£724

OntarioLondon

ONT - LGW

ONTLGW

Ontario

週五 1/8

07:05-10:00

2 stops18h 55m

London Gatwick

週五 8/8

12:00-23:42

2 stops19h 42m

£808

OntarioLondon

ONT - LGW

ONTLGW

Ontario

週一 22/12

11:00-18:50

2 stops23h 50m

London Gatwick

週二 6/1

11:00-22:02

2 stops43h 02m

£1,411

OntarioLondon

ONT - LGW

ONTLGW

Ontario

週三 13/8

19:22-06:20

2 stops26h 58m

£246

OntarioLondon

ONT - LGW

ONTLGW

Ontario

週一 6/10

14:46-20:00

2 stops21h 14m

£309

OntarioLondon

ONT - LGW

ONTLGW

Ontario

週日 27/7

07:05-10:00

2 stops18h 55m

£313

OntarioLondon

ONT - LGW

ONTLGW

Ontario

週四 31/7

07:05-10:00

2 stops18h 55m

£350

Flights are sorted by cheapest return flights first.

Deals found on 18/7

Showing 1-10 of 13 results

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 a feel of what it's like to fly with Delta, KLM, andAmerican Airlines 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.

Delta

8.0

Very Good

7,958 reviews

Check prices

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.

Delta

8.0

Very Good

7,958 reviews

Delta

8.0

Very Good

7,958 reviews

Check prices

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.

KLM

7.8

Good

1,374 reviews

Delta

8.0

Very Good

7,958 reviews

Check prices

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.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

7,958 reviews

Check prices

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.

Icelandair

7.0

Good

518 reviews

Delta

8.0

Very Good

7,958 reviews

Check prices

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.

Iberia

7.0

Good

2,843 reviews

Delta

8.0

Very Good

7,958 reviews

Check prices

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

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, KLM (£506), Iberia (£558), and American Airlines (£622) 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 Iberia (£309), KLM (£313), and Delta (£350).
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

Milton Keynes

Croydon

Hounslow

Deal

Gatwick

Slough

Luton

Wembley

Crawley

Eastbourne

Ilford

Hayes

Ipswich

Southend-on-Sea

Folkestone

Watford

Winchester

Maidstone

Guildford

Chichester

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How does Cheapflights help users find flights from Ontario to Gatwick?

Cheapflights makes it easy to find Ontario to Gatwick 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 Ontario to Gatwick?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ontario to Gatwick.

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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Cheap flights from Ontario to London Gatwick Airport from £246

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 13/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ontario to Gatwick

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Gatwick

Cheapest flights from Ontario to GatwickExplore 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 18 7月 2025.

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 18 7月 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to London Gatwick Airport that are best for you.

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.

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?

Reviews of airlines servicing Gatwick

Get a feel of what it's like to fly with Delta, KLM, andAmerican Airlines 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.

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?

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

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

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

How can I find direct flights from Ontario to Gatwick?

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

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

Travelling to a place near London Gatwick Airport?

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.

Alternative routes for Ontario to Gatwick

See prices for flight routes from nearby airports that may be better suited for you.

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 Ontario to Gatwick?

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

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

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

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Travel Smart

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 18 7月 2025.