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$544+ Cheap flights from Gatwick (LGW) to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ONT
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
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 June 18, 2025.

Round-trip from

$544
(American Airlines)

Popular in

August

Cheapest in

February

Average price

$668
From London Gatwick to Ontario
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 18, 2025.

This American Airlines deal was found by Cheapflights users on 6/17. 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.
Mon 8/253:05 pmLGW - ONT
2 stops52h 27mMultiple Airlines
Sat 9/206:10 amONT - LGW
2 stops18h 00mMultiple Airlines
Deal found 6/17$544
This TravelUp deal was found by Cheapflights users on 6/17. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2712:00 pmLGW - ONT
2 stops39h 11mKLM
Fri 9/57:05 amONT - LGW
2 stops18h 55mKLM
Deal found 6/17$566
This Delta deal was found by Cheapflights users on 6/18. 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.
Fri 6/2712:00 pmLGW - ONT
2 stops18h 25mDelta
Sat 7/511:49 amONT - LGW
2 stops38h 11mDelta
Deal found 6/18$661
This Iberia deal was found by Cheapflights users on 6/16. 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.
Sat 11/17:35 pmLGW - ONT
2 stops24h 01mIberia
Sat 11/86:38 amONT - LGW
2 stops19h 37mIberia
Deal found 6/16$702
This Netflights deal was found by Cheapflights users on 6/17. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2412:00 pmLGW - ONT
2 stops19h 46mVirgin Atlantic
Wed 7/27:05 amONT - LGW
2 stops18h 55mVirgin Atlantic
Deal found 6/17$1,209
This TravelUp deal was found by Cheapflights users on 6/17. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/412:00 pmLGW - ONT
2 stops36h 08mAir France
Sat 9/66:05 amONT - LGW
2 stops19h 55mAir France
Deal found 6/17$3,518

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 June 18, 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

Mon 8/25

3:05 pm-11:32 am

2 stops52h 27m

Ontario

Sat 9/20

6:10 am-8:10 am

2 stops18h 00m

$544

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 8/27

12:00 pm-7:11 pm

2 stops39h 11m

Ontario

Fri 9/5

7:05 am-10:00 am

2 stops18h 55m

$566

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 11/1

7:35 pm-12:36 pm

2 stops24h 01m

Ontario

Sat 11/8

6:38 am-10:15 am

2 stops19h 37m

$702

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 7/17

12:00 pm-11:42 pm

2 stops19h 42m

Ontario

Thu 7/24

7:05 am-10:00 am

2 stops18h 55m

$1,433

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 7/15

12:00 pm-11:42 pm

2 stops19h 42m

Ontario

Tue 7/22

7:05 am-10:00 am

2 stops18h 55m

$1,625

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 9/4

12:00 pm-4:08 pm

2 stops36h 08m

Ontario

Sat 9/6

6:05 am-10:00 am

2 stops19h 55m

$3,518

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 11/28

11:20 am-11:45 pm

2 stops20h 25m

$898

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 9/17

7:10 am-10:33 pm

2 stops23h 23m

$998

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sun 10/19

11:35 am-12:02 am

2 stops20h 27m

$1,039

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 9/15

3:05 pm-1:50 pm

2 stops30h 45m

$1,401

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

Showing 1-10 of 13 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 June 18, 2025.
To help decide which airline to fly from London to Ontario, see what other customers have to say about Delta, KLM and Air France. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,964 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

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
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

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
1,364 reviews
Delta
8.0
Very good
7,964 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

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
Air France
7.5
Good
1,467 reviews
Delta
8.0
Very good
7,964 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

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
Virgin Atlantic
7.4
Good
653 reviews
Delta
8.0
Very good
7,964 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

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
7,964 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

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 ($998), British Airways ($1,039), and American Airlines ($1,401).

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