What airport do you fly into for flights to Ontario?

If you book a flight to Ontario, you will be flying into Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

Can I find cheaper flights to Ontario if I am willing to have stopovers?

Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Ontario on Cheapflights that require 1 or 2 stops for potential cost savings.

What is the best airline to fly to Ontario?

Based on reviews from Cheapflights users, United Airlines is rated the highest out of the airlines that fly to Ontario.

What is the cheapest airport to fly to in Ontario?

Ontario is currently the cheapest airport to fly to in Ontario. One-way flights to Ontario typically cost £117, while return flights cost around £47.

How much is a return flight to Ontario?

A return flight to Ontario will typically cost around £101, however they can be found for as little as £47.

Where does the fastest flight to Ontario depart from?

For those looking to save time traveling to Ontario, London offers the quickest one-way flight (14 hours 8 minutes).

Does Ontario have car hire?

Yes. Those touching down at Ontario can take advantage of the car hire services offered upon their arrival.

Are there hotels close to Ontario?

Yes. Ontario has hotels nearby for those requiring accommodations. Delta Hotels by Marriott Ontario Airport is the closest property to Ontario (0.0 mi away from Ontario).

£322+ Cheap Flights to Ontario, California

Flights to Ontario in 2026

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights to Ontario
Explore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on 1 September 2026.

Fri 16/1008:40 -

2 stops22h 11m

Sat 31/1005:00 -

1 stop21h 40m

Deal found 29/8£377

Wed 4/1109:00 -

2 stops19h 15m

Fri 4/1218:40 -

2 stops17h 55m

Deal found 29/8£378

Tue 15/908:45 -

2 stops19h 16m

Mon 30/1105:00 -

1 stop20h 40m

Deal found 28/8£379

Fri 20/1107:30 -

2 stops20h 45m

Sun 29/1106:00 -

1 stop17h 25m

Deal found 31/8£382

Wed 7/1007:25 -

2 stops21h 06m

Thu 5/1109:25 -

1 stop17h 50m

Deal found 28/8£382

Mon 12/1007:30 -

2 stops21h 01m

Mon 19/1005:00 -

2 stops18h 15m

Deal found 28/8£383

Mon 26/1009:30 -

2 stops17h 45m

Fri 8/113:00 -

1 stop12h 40m

Deal found 27/8£384

Wed 7/1011:45 -

2 stops20h 10m

Thu 5/1106:20 -

2 stops40h 30m

Deal found 28/8£395

Thu 10/911:40 -

1 stop19h 00m

Wed 23/911:54 -

1 stop15h 26m

Deal found 1/9£399

Mon 12/1007:30 -

2 stops23h 21m

Mon 9/1107:00 -

2 stops15h 40m

Deal found 29/8£399

Tue 29/912:25 -

2 stops43h 22m

Tue 6/1011:56 -

1 stop15h 24m

Deal found 1/9£402

Fri 30/1016:45 -

2 stops36h 58m

Sun 15/1107:00 -

2 stops42h 00m

Deal found 1/9£438

Best flights to Ontario
Discover carefully curated flight deals to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Sat 26/913:40 -

1 stop16h 19m

Fri 27/1113:35 -

1 stop13h 40m

Deal found 31/8£405

Tue 13/1010:55 -

1 stop21h 00m

Tue 20/1006:00 -

1 stop21h 00m

Deal found 28/8£423

Sun 31/110:45 -

1 stop13h 27m

Fri 5/212:00 -

1 stop13h 00m

Deal found 29/8£430

Sat 27/214:45 -

1 stop15h 54m

Mon 8/306:00 -

1 stop22h 20m

Deal found 29/8£436

Wed 4/1107:50 -

2 stops33h 50m

Mon 23/1107:00 -

2 stops23h 15m

Deal found 31/8£529

Tue 6/1014:50 -

1 stop14h 08m

Tue 13/1013:22 -

1 stop12h 18m

Deal found 31/8£405

Sat 24/1011:40 -

1 stop19h 03m

Thu 7/107:00 -

1 stop16h 50m

Deal found 27/8£424

Mon 19/1017:00 -

1 stop14h 42m

Thu 7/107:00 -

1 stop21h 20m

Deal found 27/8£437

Fri 30/1016:45 -

2 stops36h 58m

Sun 15/1107:00 -

2 stops42h 00m

Deal found 1/9£438

Fri 23/1013:00 -

1 stop15h 31m

Sat 31/1013:29 -

1 stop13h 11m

Deal found 30/8£405

Fri 16/1013:00 -

1 stop15h 31m

Fri 23/1013:24 -

1 stop12h 16m

Deal found 1/9£406

Sun 8/1113:45 -

2 stops34h 39m

Thu 26/1106:00 -

2 stops26h 35m

Deal found 31/8£473

Mon 21/913:00 -

1 stop15h 01m

Sun 27/913:52 -

1 stop13h 18m

Deal found 28/8£407

Wed 16/1211:45 -

2 stops29h 59m

Sun 10/110:40 -

2 stops24h 20m

Deal found 31/8£543

Wed 7/1009:20 -

2 stops21h 23m

Thu 5/1107:07 -

2 stops16h 08m

Deal found 28/8£473

Thu 1/1017:35 -

2 stops35h 22m

Mon 5/1022:42 -

2 stops33h 53m

Deal found 30/8£1,158

Sun 25/1012:05 -

1 stop16h 36m

Fri 8/113:00 -

1 stop12h 40m

Deal found 27/8£407

Tue 3/1119:15 -

2 stops31h 27m

Mon 23/1107:00 -

2 stops23h 15m

Deal found 31/8£568

Sun 8/1113:45 -

2 stops34h 39m

Wed 25/1107:00 -

2 stops25h 35m

Deal found 31/8£473

Thu 21/110:25 -

1 stop16h 19m

Mon 25/106:00 -

1 stop17h 25m

Deal found 28/8£413

Wed 28/1010:00 -

2 stops41h 25m

Sat 9/106:00 -

2 stops25h 45m

Deal found 27/8£506

Wed 28/1019:15 -

2 stops30h 29m

Mon 11/107:00 -

2 stops23h 15m

Deal found 27/8£660

Wed 28/1010:00 -

2 stops41h 25m

Fri 8/117:05 -

2 stops55h 55m

Deal found 27/8£508

Wed 28/1019:15 -

2 stops30h 29m

Sun 10/107:00 -

2 stops23h 15m

Deal found 27/8£660

Tue 27/1019:15 -

2 stops45h 20m

Sun 10/107:00 -

2 stops23h 15m

Deal found 27/8£669

Mon 2/1111:55 -

2 stops17h 54m

Sun 8/1108:05 -

2 stops18h 50m

Deal found 28/8£946

Tue 27/1019:15 -

2 stops45h 20m

Mon 11/107:00 -

2 stops23h 15m

Deal found 27/8£669

Mon 28/910:50 -

2 stops42h 07m

Mon 19/1023:05 -

2 stops33h 30m

Deal found 27/8£1,163

Mon 21/917:35 -

2 stops59h 22m

Sun 4/1022:39 -

2 stops57h 56m

Deal found 27/8£1,165

Mon 12/1009:10 -

2 stops22h 32m

Mon 19/1014:13 -

2 stops22h 32m

Deal found 28/8£1,060

Find flight deals to Ontario

Return from	£429
One-way from	£322
Popular in	December
Cheapest in	February
Average price	£440

KLM
25/1-5/2
2 total stops
44h 40m total
London to Los Angeles

Search Deals

19/10
3 total stops
52h 41m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 1% potential increase in price (£9 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).

Search Deals

Average for return flights in September 2026

Search Deals

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Sat 26/9

13:40-21:59

1 stop16h 19m

Ontario

Fri 27/11

13:35-11:15

1 stop13h 40m

£405

Fastest return journey

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Tue 6/10

14:50-20:58

1 stop14h 08m

Ontario

Tue 13/10

13:22-09:40

1 stop12h 18m

£405

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Fri 23/10

13:00-20:31

1 stop15h 31m

Ontario

Sat 31/10

13:29-09:40

1 stop13h 11m

£405

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Fri 16/10

13:00-20:31

1 stop15h 31m

Ontario

Fri 23/10

13:24-09:40

1 stop12h 16m

£406

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Mon 21/9

13:00-20:01

1 stop15h 01m

Ontario

Sun 27/9

13:52-11:10

1 stop13h 18m

£407

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Sun 25/10

12:05-21:41

1 stop16h 36m

Ontario

Fri 8/1

13:00-09:40

1 stop12h 40m

£407

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Thu 21/1

10:25-18:44

1 stop16h 19m

Ontario

Mon 25/1

06:00-07:25

1 stop17h 25m

£413

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Tue 13/10

10:55-23:55

1 stop21h 00m

Ontario

Tue 20/10

06:00-11:00

1 stop21h 00m

£423

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Sat 24/10

11:40-22:43

1 stop19h 03m

Ontario

Thu 7/1

07:00-07:50

1 stop16h 50m

£424

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Sun 31/1

10:45-16:12

1 stop13h 27m

Ontario

Fri 5/2

12:00-09:00

1 stop13h 00m

£430

Flights are sorted by cheapest return flights first.

Deals found on 30/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario with our price prediction graph.

LON-ONT

LHR-ONT

LGW-ONT

LCY-ONT

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 to Ontario

LON-ONT

LHR-ONT

LGW-ONT

LCY-ONT

How long is the flight to Ontario?

On average, a flight from London to Ontario takes 16 hours 44 minutes. Flights to Ontario from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Ontario?

The most popular airlines flying from London to Ontario are British Airways, Virgin Atlantic and United Airlines.

What are the cheapest airlines that fly to Ontario?

The cheapest airlines flying from London to Ontario are United Airlines, Virgin Atlantic and British Airways.

Rainfall in Ontario by month

In terms of precipitation, rainfall in Ontario ranges from 3.0 - 86.0 inches per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

Temperature in Ontario 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 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

Reviews of airlines servicing Ontario

Get a feel of what it's like to fly with Delta,United Airlines, andVirgin Atlantic to the United States by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.8

Good

8,538 reviews

Check prices

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

7.8

Good

8,538 reviews

Delta

7.8

Good

8,538 reviews

Check prices

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

United Airlines

7.4

Good

10,157 reviews

Delta

7.8

Good

8,538 reviews

Check prices

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

695 reviews

Delta

7.8

Good

8,538 reviews

Check prices

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

6.7

Okay

8,195 reviews

Delta

7.8

Good

8,538 reviews

Check prices

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

FAQs about flying to Ontario

Ontario airport overview

At just 3.7km (2.3 miles) east of downtown Ontario, Ontario International Airport is a small but well-equipped alternative to Los Angeles Airport and John Wayne Airport for passengers flying to California.

The number of flights to Ontario International Airport has been declining steadily in recent years (there were 4.8 million passengers in 2010, but the terminals are built to handle twice that) – some say due to the lack of direct flights to major destinations, in comparison with other airports nearby. However, those who use the airport agree that it is a convenient alternative, well connected to nearby air fields and towns, easy to get in and out of, clean and with good basic facilities.

What airport do you fly into for flights to Ontario?
If you book a flight to Ontario, you will be flying into Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.
Can I find cheaper flights to Ontario if I am willing to have stopovers?
Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Ontario on Cheapflights that require 1 or 2 stops for potential cost savings.
What is the best airline to fly to Ontario?
Based on reviews from Cheapflights users, United Airlines is rated the highest out of the airlines that fly to Ontario.
What is the cheapest airport to fly to in Ontario?
Ontario is currently the cheapest airport to fly to in Ontario. One-way flights to Ontario typically cost £117, while return flights cost around £47.
How much is a return flight to Ontario?
A return flight to Ontario will typically cost around £101, however they can be found for as little as £47.
Where does the fastest flight to Ontario depart from?
For those looking to save time traveling to Ontario, London offers the quickest one-way flight (14 hours 8 minutes).
Does Ontario have car hire?
Yes. Those touching down at Ontario can take advantage of the car hire services offered upon their arrival.
Are there hotels close to Ontario?
Yes. Ontario has hotels nearby for those requiring accommodations. Delta Hotels by Marriott Ontario Airport is the closest property to Ontario (0.0 mi away from Ontario).

See more FAQs

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How does Cheapflights help users find flights to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario.

Can Cheapflights find flights to Ontario with no change fees?

Yes, we can. To see specific flights to Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights offers price alerts on Ontario flights so you can book your flight when prices are ideal. Enable price alerts 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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£322+ Cheap flights to Ontario

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 19/10. Fares are subject to change and may not be available on all flights or dates of travel.

Flights to Ontario in 2026

Cheapest flights to OntarioExplore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on 1 September 2026.

Explore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on 1 September 2026.

Best flights to OntarioDiscover carefully curated flight deals to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Discover carefully curated flight deals to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Last-minute flights to OntarioDiscover last-minute flight deals to Ontario. Data last updated 1 September 2026 and is based on user searches.

Discover last-minute flight deals to Ontario. Data last updated 1 September 2026 and is based on user searches.

One-way flights to OntarioSearch for one-way flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated 1 September 2026.

Search for one-way flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated 1 September 2026.

Find flight deals to Ontario

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

Best time to book a flight to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario with our price prediction graph.

Cheapflights Insights

How long is the flight to Ontario?

On average, a flight from London to Ontario takes 16 hours 44 minutes. Flights to Ontario from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Ontario?

The most popular airlines flying from London to Ontario are British Airways, Virgin Atlantic and United Airlines.

What are the cheapest airlines that fly to Ontario?

The cheapest airlines flying from London to Ontario are United Airlines, Virgin Atlantic and British Airways.

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 3.0 - 86.0 inches per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

Temperature in Ontario by month

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

Reviews of airlines servicing Ontario

Get a feel of what it's like to fly with Delta,United Airlines, andVirgin Atlantic to the United States by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

FAQs about flying to Ontario

Ontario airport overview

What airport do you fly into for flights to Ontario?

Can I find cheaper flights to Ontario if I am willing to have stopovers?

What is the best airline to fly to Ontario?

What is the cheapest airport to fly to in Ontario?

How much is a return flight to Ontario?

Where does the fastest flight to Ontario depart from?

Does Ontario have car hire?

Are there hotels close to Ontario?

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.

Search flights to Ontario by cabin class

Find flights to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Find the best flight deals from Ontario

Some of the lowest fares we’ve come across for flights from Ontario.

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Reserve a car hire and hotel room to complete your trip to Ontario.

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How does Cheapflights help users find flights to Ontario?

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

Can Cheapflights find flights to Ontario with no change fees?

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

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Travel Smart

Cheapest flights to Ontario
Explore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on 1 September 2026.

Best flights to Ontario
Discover carefully curated flight deals to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Last-minute flights to Ontario
Discover last-minute flight deals to Ontario. Data last updated 1 September 2026 and is based on user searches.

One-way flights to Ontario
Search for one-way flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated 1 September 2026.