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 36 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).

£347+ 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 7 September 2026.

Wed 25/1109:00 -

2 stops19h 02m

Sun 6/1216:03 -

1 stop31h 22m

Deal found 3/9£377

Wed 4/1109:00 -

2 stops19h 15m

Wed 11/1106:00 -

1 stop17h 40m

Deal found 2/9£378

Mon 19/1006:55 -

2 stops35h 28m

Mon 26/1009:25 -

1 stop15h 00m

Deal found 7/9£381

Thu 15/1007:30 -

2 stops21h 01m

Tue 20/1011:10 -

2 stops17h 50m

Deal found 4/9£382

Fri 23/1007:30 -

2 stops21h 01m

Fri 30/1006:00 -

1 stop18h 40m

Deal found 6/9£382

Mon 19/1007:30 -

2 stops21h 01m

Sun 25/1006:00 -

2 stops19h 30m

Deal found 4/9£388

Wed 4/1108:40 -

2 stops46h 03m

Fri 4/1213:11 -

2 stops57h 54m

Deal found 3/9£388

Wed 25/1112:20 -

1 stop18h 40m

Sun 6/1207:05 -

1 stop17h 55m

Deal found 3/9£399

Mon 19/1011:40 -

1 stop19h 03m

Sun 25/1012:16 -

1 stop13h 44m

Deal found 3/9£402

Mon 19/1017:10 -

2 stops38h 45m

Mon 26/1013:35 -

2 stops44h 45m

Deal found 7/9£423

Fri 11/910:25 -

2 stops20h 15m

Mon 28/911:54 -

2 stops20h 06m

Deal found 4/9£425

Mon 2/1116:45 -

2 stops37h 58m

Mon 9/1107:00 -

2 stops24h 45m

Deal found 5/9£425

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 7 September 2026.

Sun 4/1010:00 -

1 stop19h 59m

Sat 10/1013:52 -

1 stop13h 18m

Deal found 4/9£405

Mon 19/1017:10 -

2 stops38h 45m

Mon 26/1013:35 -

2 stops44h 45m

Deal found 7/9£423

Thu 1/1010:25 -

2 stops19h 59m

Wed 14/1007:07 -

2 stops18h 18m

Deal found 4/9£425

Tue 5/114:45 -

1 stop15h 56m

Wed 3/211:36 -

1 stop16h 44m

Deal found 6/9£434

Wed 30/919:15 -

2 stops36h 21m

Mon 12/1007:00 -

2 stops22h 20m

Deal found 4/9£620

Thu 8/1014:50 -

1 stop14h 08m

Thu 15/1013:24 -

1 stop12h 16m

Deal found 5/9£406

Fri 11/1211:55 -

2 stops18h 45m

Tue 22/1208:50 -

2 stops18h 05m

Deal found 7/9£815

Tue 26/110:00 -

2 stops33h 27m

Sat 30/107:00 -

2 stops24h 45m

Deal found 3/9£431

Wed 4/1110:00 -

2 stops44h 11m

Tue 10/1112:18 -

2 stops20h 17m

Deal found 2/9£433

Thu 22/1017:00 -

1 stop14h 42m

Thu 5/1112:02 -

1 stop16h 18m

Deal found 6/9£434

Sat 3/1014:50 -

1 stop14h 08m

Sat 10/1008:03 -

1 stop19h 07m

Deal found 5/9£406

Mon 5/1017:00 -

1 stop14h 42m

Wed 14/1011:13 -

1 stop19h 52m

Deal found 2/9£435

Wed 7/1016:15 -

1 stop14h 36m

Wed 21/1013:52 -

1 stop13h 18m

Deal found 5/9£406

Thu 29/1011:55 -

2 stops18h 47m

Fri 25/1206:00 -

2 stops20h 55m

Deal found 3/9£1,015

Thu 29/1014:45 -

1 stop15h 57m

Fri 25/1206:00 -

1 stop22h 20m

Deal found 3/9£435

Tue 6/1010:35 -

1 stop15h 06m

Sat 17/1013:52 -

1 stop13h 18m

Deal found 5/9£406

Mon 28/917:35 -

2 stops35h 22m

Mon 5/1022:42 -

2 stops33h 53m

Deal found 6/9£1,158

Wed 28/1014:45 -

1 stop26h 32m

Thu 24/1206:00 -

1 stop22h 20m

Deal found 3/9£442

Thu 21/110:25 -

1 stop16h 19m

Mon 25/106:00 -

1 stop17h 25m

Deal found 6/9£413

Wed 30/919:15 -

2 stops36h 21m

Thu 15/1014:22 -

2 stops34h 38m

Deal found 4/9£627

Mon 19/1010:00 -

2 stops20h 43m

Sun 25/1006:20 -

2 stops42h 50m

Deal found 4/9£573

Wed 30/909:35 -

2 stops46h 01m

Wed 7/1012:43 -

2 stops42h 32m

Deal found 2/9£675

Mon 1/211:55 -

2 stops18h 46m

Sun 7/211:25 -

2 stops15h 30m

Deal found 7/9£837

Fri 2/1019:15 -

2 stops57h 54m

Wed 14/1014:22 -

2 stops58h 38m

Deal found 4/9£704

Thu 4/307:50 -

2 stops23h 55m

Thu 25/306:00 -

2 stops20h 10m

Deal found 3/9£724

Thu 1/1009:50 -

2 stops21h 46m

Thu 15/1010:25 -

2 stops26h 45m

Deal found 4/9£749

Fri 30/1011:55 -

2 stops18h 47m

Fri 25/1206:00 -

2 stops20h 55m

Deal found 3/9£1,118

Tue 29/917:35 -

2 stops35h 22m

Tue 6/1022:42 -

2 stops33h 58m

Deal found 6/9£1,158

Mon 5/1007:05 -

2 stops24h 37m

Mon 26/1014:50 -

2 stops24h 45m

Deal found 7/9£1,093

Sat 31/1011:45 -

2 stops38h 57m

Thu 24/1205:44 -

2 stops21h 06m

Deal found 3/9£766

Find flight deals to Ontario

Return from	£419
One-way from	£347
Popular in	December
Cheapest in	February
Average price	£450

SWISS
13/1-27/1
2 total stops
44h 45m total
London to Los Angeles

Search Deals

Alaska Airlines
23/10-31/12
1 total stop
25h 17m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 1% potential increase in price (£8 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

Thu 17/12

14:45-23:56

1 stop17h 11m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£354

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Wed 11/11

06:15-23:46

2 stops25h 31m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£370

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Mon 16/11

08:45-23:46

2 stops23h 01m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£370

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Sun 4/10

10:00-21:59

1 stop19h 59m

Ontario

Sat 10/10

13:52-11:10

1 stop13h 18m

£405

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Thu 8/10

14:50-20:58

1 stop14h 08m

Ontario

Thu 15/10

13:24-09:40

1 stop12h 16m

£406

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Sat 3/10

14:50-20:58

1 stop14h 08m

Ontario

Sat 10/10

08:03-11:10

1 stop19h 07m

£406

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Wed 7/10

16:15-22:51

1 stop14h 36m

Ontario

Wed 21/10

13:52-11:10

1 stop13h 18m

£406

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Tue 6/10

10:35-17:41

1 stop15h 06m

Ontario

Sat 17/10

13:52-11:10

1 stop13h 18m

£406

LondonOntario

LHR London Heathrow - ONT Ontario

LHRONT

London Heathrow

Sat 3/10

08:15-20:57

1 stop20h 42m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£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

Flights are sorted by cheapest return flights first.

Deals found on 2/9

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 21 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

8,548 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

8,548 reviews

Delta

7.8

Good

8,548 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

10,178 reviews

Delta

7.8

Good

8,548 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

694 reviews

Delta

7.8

Good

8,548 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

8,209 reviews

Delta

7.8

Good

8,548 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 36 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).

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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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£347+ Cheap flights to Ontario

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/10. 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 7 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 7 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 7 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 7 September 2026.

Last-minute flights to OntarioDiscover last-minute flight deals to Ontario. Data last updated 7 September 2026 and is based on user searches.

Discover last-minute flight deals to Ontario. Data last updated 7 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 7 September 2026.

Search for one-way flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated 7 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 21 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.

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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 7 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 7 September 2026.

Last-minute flights to Ontario
Discover last-minute flight deals to Ontario. Data last updated 7 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 7 September 2026.