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$436+ Cheap flights from Gatwick (LGW) to Ontario (ONT)

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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ONT
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap 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 July 29, 2025.

Round-trip from

$557
(American Airlines)

One-way from

$436
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$811
From London Gatwick to Ontario
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One-way flight from London Gatwick to Ontario
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Highest demand for flights based on searches. 13% potential increase in price ($102 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Gatwick to Ontario

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 July 29, 2025.

This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2810:40 amLGW - ONT
2 stops18h 59mAmerican Airlines
Wed 9/106:10 amONT - LGW
2 stops18h 00mAmerican Airlines
Deal found 7/27$557
This British Airways deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2111:35 amLGW - ONT
2 stops20h 33mBritish Airways
Tue 9/168:15 amONT - LGW
2 stops27h 45mBritish Airways
Deal found 7/27$622
This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/103:05 pmLGW - ONT
2 stops35h 30mMultiple Airlines
Wed 10/226:10 amONT - LGW
2 stops18h 00mMultiple Airlines
Deal found 7/28$663
This Iberia deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/197:10 amLGW - ONT
2 stops19h 44mIberia
Sun 9/212:30 pmONT - LGW
2 stops21h 30mIberia
Deal found 7/27$1,022
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1212:00 pmLGW - ONT
2 stops19h 40mDelta
Sun 8/177:05 amONT - LGW
2 stops18h 55mDelta
Deal found 7/28$2,023
This The Travel House deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/912:00 pmLGW - ONT
2 stops42h 27mKLM
Fri 8/157:05 amONT - LGW
2 stops18h 55mKLM
Deal found 7/27$2,884

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated July 29, 2025.
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

Thu 8/28

10:40 am-9:39 pm

2 stops18h 59m

Ontario

Wed 9/10

6:10 am-8:10 am

2 stops18h 00m

$557

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 8/21

11:35 am-12:08 am

2 stops20h 33m

Ontario

Tue 9/16

8:15 am-8:00 pm

2 stops27h 45m

$622

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 10/10

3:05 pm-6:35 pm

2 stops35h 30m

Ontario

Wed 10/22

6:10 am-8:10 am

2 stops18h 00m

$663

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 9/19

7:10 am-6:54 pm

2 stops19h 44m

Ontario

Sun 9/21

2:30 pm-8:00 pm

2 stops21h 30m

$1,022

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 8/12

12:00 pm-11:40 pm

2 stops19h 40m

Ontario

Sun 8/17

7:05 am-10:00 am

2 stops18h 55m

$2,023

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 8/9

12:00 pm-10:27 pm

2 stops42h 27m

Ontario

Fri 8/15

7:05 am-10:00 am

2 stops18h 55m

$2,884

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 9/11

2:00 pm-7:23 am

2 stops25h 23m

$436

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 9/17

7:10 am-10:33 pm

2 stops23h 23m

$978

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 12/27

7:35 pm-1:42 pm

2 stops26h 07m

$1,021

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 10/25

3:05 pm-11:58 am

2 stops28h 53m

$1,534

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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 round-trip 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, August is the cheapest month in which you can book a flight from London Gatwick Airport to Ontario (average of $246). Flying from London Gatwick Airport to Ontario in March is currently the most expensive (average of $328). 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 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 July 29, 2025.
Get a feel of what it's like to fly with Delta, KLM, and American Airlines from London Gatwick Airport to Ontario 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
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Iberia
7.0
Good
2,859 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.6
Okay
7,208 reviews
Delta
8.0
Very good
7,979 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from London Gatwick to Ontario. 0 airlines have flights to Ontario from London Gatwick on a regular basis. Booking flights from London Gatwick to Ontario should not be difficult; the airport handles an average of 0 inbound flights from London Gatwick per day.

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

    The cheapest airlines for a one-way flight from London Gatwick Airport to Ontario are Iberia ($978), British Airways ($1,021), and American Airlines ($1,534).

  • 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 vacation 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, August is the cheapest month in which you can book a flight from London Gatwick Airport to Ontario (average of $246). Flying from London Gatwick Airport to Ontario in March is currently the most expensive (average of $328). 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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