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$384+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ONT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$489
(American Airlines)

One-way from

$384
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$560
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. 3% potential increase in price ($22 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 September 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 September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/11. 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 9/2612:20 pmLGW - ONT
2 stops33h 34mAmerican Airlines
Fri 10/107:27 pmONT - LGW
2 stops28h 43mAmerican Airlines
Deal found 9/11$523
This American Airlines deal was found by Cheapflights users on 9/11. 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 stops49h 51mMultiple Airlines
Wed 10/226:10 amONT - LGW
2 stops18h 00mMultiple Airlines
Deal found 9/11$558
This American Airlines deal was found by Cheapflights users on 9/11. 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 9/2612:20 pmLGW - ONT
2 stops18h 13mMultiple Airlines
Fri 10/1011:59 pmONT - LGW
2 stops24h 11mMultiple Airlines
Deal found 9/11$719
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2511:35 amLGW - ONT
2 stops20h 24mIberia
Sun 9/282:30 pmONT - LGW
2 stops21h 30mIberia
Deal found 9/11$802
This lastminute.com deal was found by Cheapflights users on 9/10. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/411:55 amLGW - ONT
2 stops31h 10mMultiple Airlines
Fri 2/66:00 amONT - LGW
2 stops20h 55mMultiple Airlines
Deal found 9/10$892
This Justfly.com deal was found by Cheapflights users on 9/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3011:55 amLGW - ONT
2 stops18h 37mMultiple Airlines
Tue 11/46:00 amONT - LGW
2 stops20h 55mMultiple Airlines
Deal found 9/10$937
This Justfly.com deal was found by Cheapflights users on 9/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2911:55 amLGW - ONT
2 stops20h 19mMultiple Airlines
Fri 1/306:00 amONT - LGW
2 stops20h 55mMultiple Airlines
Deal found 9/10$1,165
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sun 9/212:45 pmLGW - ONT
2 stops31h 09mMultiple Airlines
Sun 10/56:10 amONT - LGW
2 stops17h 40mMultiple Airlines
Deal found 9/10$1,179
This Icelandair deal was found by Cheapflights users on 9/10. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2711:55 amLGW - ONT
2 stops18h 45mMultiple Airlines
Fri 10/319:40 amONT - LGW
2 stops18h 15mMultiple Airlines
Deal found 9/10$1,436
This Justfly.com deal was found by Cheapflights users on 9/9. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/911:55 amLGW - ONT
2 stops19h 37mMultiple Airlines
Tue 11/116:00 amONT - LGW
2 stops20h 55mMultiple Airlines
Deal found 9/9$1,612
This Justfly.com deal was found by Cheapflights users on 9/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1011:55 amLGW - ONT
2 stops38h 37mMultiple Airlines
Fri 12/126:00 amONT - LGW
2 stops20h 55mMultiple Airlines
Deal found 9/10$1,628

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 September 11, 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 2/26

12:30 pm-8:24 pm

2 stops39h 54m

Ontario

Mon 3/2

6:47 am-7:30 am

2 stops16h 43m

$489

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 9/26

12:20 pm-1:54 pm

2 stops33h 34m

Ontario

Fri 10/10

7:27 pm-8:10 am

2 stops28h 43m

$523

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 10/10

3:05 pm-8:56 am

2 stops49h 51m

Ontario

Wed 10/22

6:10 am-8:10 am

2 stops18h 00m

$558

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 9/26

12:20 pm-10:33 pm

2 stops18h 13m

Ontario

Fri 10/10

11:59 pm-8:10 am

2 stops24h 11m

$719

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 9/25

11:35 am-11:59 pm

2 stops20h 24m

Ontario

Sun 9/28

2:30 pm-8:00 pm

2 stops21h 30m

$802

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sun 1/25

11:55 am-10:39 am

2 stops30h 44m

Ontario

Wed 2/4

6:00 am-10:55 am

2 stops20h 55m

$902

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 10/30

11:55 am-11:32 pm

2 stops18h 37m

Ontario

Tue 11/4

6:00 am-10:55 am

2 stops20h 55m

$937

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 2/20

11:55 am-10:37 pm

2 stops18h 42m

Ontario

Tue 2/24

6:00 am-10:55 am

2 stops20h 55m

$940

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sun 9/21

2:45 pm-1:54 pm

2 stops31h 09m

Ontario

Sun 10/5

6:10 am-7:50 am

2 stops17h 40m

$1,179

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 10/27

11:55 am-11:40 pm

2 stops18h 45m

Ontario

Fri 10/31

9:40 am-10:55 am

2 stops18h 15m

$1,436

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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 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.

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.

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

    Airlines like American Airlines fly from London Gatwick Airport to Ontario in about 39h 54m. The time it takes to get you to your destination can typically vary by up to . London Gatwick Airport and Ontario are separated by a distance of 5430 mi.

  • 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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