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 £46.

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 £46.

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 (13 hours 27 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).

£310+ 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 20 August 2026.

Wed 14/1019:15 -

2 stops35h 28m

Wed 18/1112:22 -

1 stop34h 03m

Deal found 17/8£426

Wed 4/1109:00 -

2 stops19h 15m

Mon 9/1113:29 -

1 stop12h 11m

Deal found 18/8£430

Wed 18/1109:00 -

2 stops19h 15m

Thu 19/1106:00 -

2 stops31h 20m

Deal found 17/8£432

Thu 29/1012:20 -

1 stop17h 23m

Sun 1/1107:07 -

1 stop20h 33m

Deal found 17/8£437

Wed 14/1019:15 -

2 stops35h 28m

Wed 18/1107:00 -

1 stop15h 25m

Deal found 17/8£438

Tue 15/909:40 -

2 stops22h 07m

Tue 22/913:04 -

2 stops34h 11m

Deal found 18/8£439

Thu 3/917:10 -

2 stops37h 35m

Tue 8/906:00 -

1 stop21h 20m

Deal found 19/8£440

Wed 30/907:25 -

2 stops21h 06m

Wed 7/1007:00 -

2 stops15h 55m

Deal found 16/8£441

Thu 3/907:25 -

2 stops18h 46m

Sun 13/913:18 -

1 stop12h 22m

Deal found 15/8£442

Wed 16/910:55 -

1 stop13h 40m

Wed 23/913:04 -

1 stop12h 56m

Deal found 17/8£446

Wed 4/1106:30 -

2 stops21h 00m

Mon 9/1117:53 -

2 stops18h 17m

Deal found 18/8£446

Tue 24/1120:05 -

2 stops35h 53m

Wed 13/107:00 -

2 stops17h 50m

Deal found 17/8£468

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 20 August 2026.

Wed 4/1106:30 -

2 stops21h 00m

Mon 9/1117:53 -

2 stops18h 17m

Deal found 18/8£446

Sat 17/1016:15 -

1 stop14h 36m

Sun 25/1013:35 -

1 stop14h 40m

Deal found 17/8£457

Sat 19/910:55 -

1 stop13h 40m

Sat 26/913:04 -

1 stop12h 56m

Deal found 19/8£478

Mon 14/909:20 -

2 stops45h 20m

Mon 5/1013:04 -

2 stops20h 16m

Deal found 16/8£483

Wed 16/917:00 -

1 stop26h 16m

Mon 5/1014:13 -

1 stop16h 52m

Deal found 18/8£486

Thu 3/919:15 -

2 stops35h 44m

Mon 14/910:25 -

2 stops19h 05m

Deal found 16/8£634

Wed 11/1111:55 -

2 stops17h 45m

Tue 17/1110:05 -

2 stops16h 50m

Deal found 17/8£724

Mon 23/1109:30 -

2 stops18h 45m

Sat 28/1113:29 -

1 stop12h 11m

Deal found 19/8£463

Sat 12/910:25 -

2 stops20h 15m

Sat 19/907:05 -

2 stops18h 15m

Deal found 15/8£479

Sun 6/913:40 -

1 stop16h 19m

Fri 18/906:00 -

1 stop17h 55m

Deal found 17/8£463

Wed 30/917:35 -

2 stops35h 22m

Sat 17/1023:05 -

2 stops33h 30m

Deal found 20/8£1,061

Wed 9/909:20 -

2 stops19h 04m

Wed 16/917:15 -

2 stops15h 25m

Deal found 19/8£490

Wed 14/1014:50 -

1 stop14h 08m

Thu 22/1013:24 -

1 stop15h 01m

Deal found 17/8£466

Fri 18/908:25 -

2 stops23h 22m

Sun 4/1013:04 -

2 stops19h 36m

Deal found 17/8£496

Mon 12/1010:35 -

1 stop15h 01m

Tue 20/1013:52 -

1 stop13h 18m

Deal found 16/8£466

Fri 18/911:25 -

2 stops16h 36m

Sun 4/1005:00 -

2 stops18h 15m

Deal found 17/8£466

Thu 3/910:25 -

2 stops19h 27m

Tue 8/906:00 -

2 stops19h 25m

Deal found 19/8£536

Sat 5/910:00 -

2 stops20h 45m

Sat 19/918:00 -

2 stops39h 20m

Deal found 18/8£716

Thu 17/909:50 -

2 stops21h 46m

Thu 8/1010:25 -

2 stops20h 50m

Deal found 20/8£735

Sat 12/913:40 -

1 stop16h 19m

Fri 18/913:56 -

1 stop13h 14m

Deal found 19/8£488

Thu 10/913:00 -

2 stops18h 24m

Tue 15/915:14 -

2 stops15h 26m

Deal found 19/8£860

Wed 2/914:50 -

1 stop14h 04m

Sat 5/913:18 -

1 stop12h 22m

Deal found 15/8£519

Thu 10/908:25 -

2 stops19h 40m

Thu 17/913:04 -

2 stops19h 36m

Deal found 19/8£647

Wed 4/1107:45 -

2 stops19h 45m

Mon 9/1107:00 -

2 stops16h 15m

Deal found 18/8£1,012

Wed 10/211:55 -

2 stops18h 44m

Wed 17/210:05 -

2 stops16h 50m

Deal found 15/8£1,034

Mon 28/917:35 -

2 stops35h 22m

Mon 5/1022:42 -

2 stops33h 53m

Deal found 19/8£1,158

Thu 17/910:25 -

2 stops20h 15m

Fri 2/1012:19 -

2 stops19h 41m

Deal found 18/8£734

Sun 11/1007:30 -

2 stops22h 50m

Fri 16/1023:05 -

2 stops26h 50m

Deal found 18/8£1,121

Sat 5/915:40 -

2 stops35h 23m

Sat 19/910:47 -

2 stops19h 48m

Deal found 17/8£1,179

Fri 12/211:55 -

2 stops18h 44m

Sat 20/209:05 -

2 stops17h 50m

Deal found 16/8£1,230

Find flight deals to Ontario

Return from	£427
One-way from	£310
Popular in	December
Cheapest in	February
Average price	£528

Virgin Atlantic
3/9-10/9
1 total stop
25h 35m total
London to Los Angeles

Search Deals

4/11
2 total stops
21h 41m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (£11 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 August 2026

Search Deals

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Wed 4/11

06:30-19:30

2 stops21h 00m

Ontario

Mon 9/11

17:53-20:10

2 stops18h 17m

£446

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Sat 17/10

16:15-22:51

1 stop14h 36m

Ontario

Sun 25/10

13:35-11:15

1 stop14h 40m

£457

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Mon 23/11

09:30-20:15

2 stops18h 45m

Ontario

Sat 28/11

13:29-09:40

1 stop12h 11m

£463

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Sun 6/9

13:40-21:59

1 stop16h 19m

Ontario

Fri 18/9

06:00-07:55

1 stop17h 55m

£463

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Wed 14/10

14:50-20:58

1 stop14h 08m

Ontario

Thu 22/10

13:24-12:25

1 stop15h 01m

£466

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Mon 12/10

10:35-17:36

1 stop15h 01m

Ontario

Tue 20/10

13:52-11:10

1 stop13h 18m

£466

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Fri 18/9

11:25-20:01

2 stops16h 36m

Ontario

Sun 4/10

05:00-07:15

2 stops18h 15m

£466

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Sat 19/9

10:55-16:35

1 stop13h 40m

Ontario

Sat 26/9

13:04-10:00

1 stop12h 56m

£478

LondonOntario

LGW London Gatwick - ONT Ontario

LGWONT

London Gatwick

Sat 12/9

10:25-22:40

2 stops20h 15m

Ontario

Sat 19/9

07:05-09:20

2 stops18h 15m

£479

LondonOntario

LCY London City - ONT Ontario

LCYONT

London City

Mon 14/9

09:20-22:40

2 stops45h 20m

Ontario

Mon 5/10

13:04-17:20

2 stops20h 16m

£483

Flights are sorted by cheapest return flights first.

Deals found on 16/8

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

LCY-ONT

LGW-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

LCY-ONT

LGW-ONT

How long is the flight to Ontario?

On average, a flight from London to Ontario takes 16 hours 19 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

8,510 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

8,510 reviews

Delta

7.8

Good

8,510 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

10,104 reviews

Delta

7.8

Good

8,510 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

8,510 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

8,181 reviews

Delta

7.8

Good

8,510 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 £46.
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 £46.
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 (13 hours 27 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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£310+ 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 4/11. 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 20 August 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 20 August 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 20 August 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 20 August 2026.

Last-minute flights to OntarioDiscover last-minute flight deals to Ontario. Data last updated 20 August 2026 and is based on user searches.

Discover last-minute flight deals to Ontario. Data last updated 20 August 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 20 August 2026.

Search for one-way flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated 20 August 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 19 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.

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Some of the lowest fares we’ve come across for flights from 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 20 August 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 20 August 2026.

Last-minute flights to Ontario
Discover last-minute flight deals to Ontario. Data last updated 20 August 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 20 August 2026.