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.

What is the cheapest month to fly to Ontario?

Currently, March is the cheapest month in which you can book a flight to Ontario . Flying to Ontario in August will prove the most costly. There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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, Finnair 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 £38, while return flights cost around £63.

How much is a return flight to Ontario?

A return flight to Ontario will typically cost around £98, however they can be found for as little as £86.

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 34 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).

£392+ Flights to Ontario, California

Flights to Ontario in 2025

Return from	£372
One-way from	£435
Popular in	August
Cheapest in	February
Average price	£582

Norse Atlantic UK
27/8-27/8
Nonstop
21h 40m total
London to Los Angeles

Search Deals

British Airways
28/10
1 total stop
15h 06m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£38 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).

Search Deals

Average for return flights in July 2025

Search Deals

Find flight deals to Ontario

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 8 July 2025.

Sun 24/810:55LHR - ONT

1 stop20h 45mKLM

Tue 9/911:40ONT - LHR

1 stop18h 35mKLM

Deal found 7/7£392

Thu 28/815:05LGW - ONT

2 stops28h 27mMultiple Airlines

Wed 10/906:10ONT - LGW

2 stops18h 00mMultiple Airlines

Deal found 6/7£413

Sun 24/810:55LHR - ONT

1 stop20h 45mVirgin Atlantic

Tue 9/906:05ONT - LHR

2 stops40h 20mVirgin Atlantic

Deal found 7/7£416

Sun 31/815:10LHR - ONT

1 stop15h 04mFinnair

Sat 13/914:54ONT - LHR

1 stop13h 51mFinnair

Deal found 6/7£419

Fri 26/912:00LHR - ONT

1 stop14h 54mBritish Airways

Wed 8/1016:49ONT - LHR

1 stop12h 01mBritish Airways

Deal found 8/7£425

Mon 24/1119:05LHR - ONT

2 stops22h 23mIberia

Fri 5/1210:57ONT - LHR

1 stop15h 03mIberia

Deal found 7/7£428

Tue 25/1106:30LHR - ONT

2 stops24h 12mDelta

Fri 5/1211:29ONT - LHR

1 stop15h 31mDelta

Deal found 7/7£430

Mon 1/915:40LHR - ONT

1 stop13h 59mAmerican Airlines

Wed 17/916:45ONT - LHR

1 stop12h 05mAmerican Airlines

Deal found 8/7£443

Wed 3/912:00LHR - ONT

1 stop14h 54mMultiple Airlines

Tue 9/912:45ONT - LHR

1 stop14h 05mMultiple Airlines

Deal found 6/7£476

Sun 10/816:20LCY - ONT

2 stops51h 32mBritish Airways

Thu 21/810:50ONT - LCY

2 stops19h 35mBritish Airways

Deal found 6/7£535

Sat 15/1119:35LGW - ONT

2 stops30h 14mBritish Airways

Fri 21/1108:46ONT - LGW

2 stops26h 04mBritish Airways

Deal found 7/7£576

Thu 21/812:00LGW - ONT

2 stops42h 20mKLM

Mon 1/907:05ONT - LGW

2 stops42h 55mKLM

Deal found 7/7£609

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 8 July 2025.

Sun 24/810:55LHR - ONT

1 stop20h 45mKLM

Tue 9/911:40ONT - LHR

1 stop18h 35mKLM

Deal found 7/7£392

Thu 28/815:05LGW - ONT

2 stops28h 27mMultiple Airlines

Wed 10/906:10ONT - LGW

2 stops18h 00mMultiple Airlines

Deal found 6/7£413

Sun 24/810:55LHR - ONT

1 stop20h 45mVirgin Atlantic

Tue 9/906:05ONT - LHR

2 stops40h 20mVirgin Atlantic

Deal found 7/7£416

Sun 31/815:10LHR - ONT

1 stop15h 04mFinnair

Sat 13/914:54ONT - LHR

1 stop13h 51mFinnair

Deal found 6/7£419

Fri 26/912:00LHR - ONT

1 stop14h 54mBritish Airways

Wed 8/1016:49ONT - LHR

1 stop12h 01mBritish Airways

Deal found 8/7£425

Mon 24/1119:05LHR - ONT

2 stops22h 23mIberia

Fri 5/1210:57ONT - LHR

1 stop15h 03mIberia

Deal found 7/7£428

Tue 25/1106:30LHR - ONT

2 stops24h 11mDelta

Fri 5/1206:00ONT - LHR

2 stops22h 15mDelta

Deal found 7/7£430

Mon 1/915:40LHR - ONT

1 stop13h 59mAmerican Airlines

Wed 17/916:45ONT - LHR

1 stop12h 05mAmerican Airlines

Deal found 8/7£443

Wed 3/912:00LHR - ONT

1 stop14h 54mMultiple Airlines

Tue 9/912:45ONT - LHR

1 stop14h 05mMultiple Airlines

Deal found 6/7£476

Sun 10/816:20LCY - ONT

2 stops51h 32mBritish Airways

Thu 21/810:50ONT - LCY

2 stops19h 35mBritish Airways

Deal found 6/7£535

Thu 21/812:00LGW - ONT

2 stops42h 20mKLM

Mon 1/907:05ONT - LGW

2 stops42h 55mKLM

Deal found 7/7£609

Wed 10/908:40LCY - ONT

2 stops22h 02mVirgin Atlantic

Wed 17/907:05ONT - LCY

2 stops16h 10mVirgin Atlantic

Deal found 7/7£622

Last-minute flights to Ontario
Discover last-minute flight deals to Ontario. Data last updated 8 July 2025 and is based on user searches.

Sun 13/715:40LHR - ONT

1 stop13h 58mAmerican Airlines

Sat 26/716:45ONT - LHR

1 stop12h 05mAmerican Airlines

Deal found 6/7£572

Sun 13/706:30LHR - ONT

2 stops25h 12mVirgin Atlantic

Wed 20/813:15ONT - LHR

2 stops19h 00mVirgin Atlantic

Deal found 7/7£1,019

Sun 13/714:10LHR - ONT

2 stops30h 04mAir Canada

Sun 3/818:31ONT - LHR

2 stops28h 04mAir Canada

Deal found 7/7£1,359

Mon 14/712:00LHR - ONT

1 stop14h 53mIberia

Mon 11/812:47ONT - LHR

1 stop14h 03mIberia

Deal found 7/7£507

Mon 14/713:40LHR - ONT

1 stop15h 57mUnited Airlines

Tue 22/713:34ONT - LHR

1 stop12h 06mUnited Airlines

Deal found 7/7£783

Mon 14/711:55LHR - ONT

1 stop18h 04mJetBlue

Wed 16/723:59ONT - LHR

1 stop25h 31mJetBlue

Deal found 7/7£905

Tue 15/715:40LHR - ONT

1 stop13h 58mFinnair

Sun 20/723:59ONT - LHR

2 stops22h 21mFinnair

Deal found 7/7£538

Tue 15/710:55LHR - ONT

1 stop13h 34mKLM

Tue 22/713:15ONT - LHR

1 stop12h 35mKLM

Deal found 7/7£555

Tue 15/710:55LHR - ONT

1 stop13h 34mMultiple Airlines

Sat 9/813:15ONT - LHR

1 stop12h 35mMultiple Airlines

Deal found 7/7£557

Tue 15/712:00LGW - ONT

2 stops19h 42mVirgin Atlantic

Tue 22/707:05ONT - LGW

2 stops18h 55mVirgin Atlantic

Deal found 7/7£844

Wed 16/711:15LHR - ONT

1 stop14h 53mBritish Airways

Sat 2/816:45ONT - LHR

1 stop13h 55mBritish Airways

Deal found 7/7£498

Wed 16/713:25LHR - ONT

1 stop17h 22mDelta

Tue 29/713:15ONT - LHR

1 stop12h 35mDelta

Deal found 7/7£532

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 8 July 2025.

Tue 28/1008:20LHR - ONT

1 stop15h 06mBritish Airways

Deal found 7/7£435

Tue 21/1014:10LHR - ONT

2 stops16h 32mWestJet

Deal found 7/7£488

Wed 17/912:00LHR - ONT

1 stop14h 54mIberia

Deal found 6/7£489

Sat 9/808:15LHR - ONT

1 stop21h 55mJetBlue

Deal found 5/7£509

Sat 13/911:15LHR - ONT

1 stop15h 01mMultiple Airlines

Deal found 8/7£519

Mon 1/922:05LHR - ONT

2 stops31h 50mAvianca

Deal found 6/7£598

Fri 26/912:00LHR - ONT

1 stop14h 54mFinnair

Deal found 6/7£663

Thu 13/1106:20LHR - ONT

2 stops17h 54mVirgin Atlantic

Deal found 8/7£670

Fri 21/1119:35LGW - ONT

2 stops26h 07mBritish Airways

Deal found 6/7£677

Fri 1/809:50LGW - ONT

3 stops20h 57mMultiple Airlines

Deal found 6/7£679

Wed 17/907:10LGW - ONT

2 stops19h 44mIberia

Deal found 7/7£742

Fri 19/909:20LCY - ONT

2 stops21h 20mVirgin Atlantic

Deal found 7/7£1,206

Cheapflights Fare Finder

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

Fly from

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 24/8

10:55-23:40

1 stop20h 45m

Ontario

Tue 9/9

11:40-14:15

1 stop18h 35m

£392

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 28/8

15:05-11:32

2 stops28h 27m

Ontario

Wed 10/9

06:10-08:10

2 stops18h 00m

£413

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 24/8

10:55-23:40

1 stop20h 45m

Ontario

Tue 9/9

06:05-06:25

2 stops40h 20m

£416

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 31/8

15:10-22:14

1 stop15h 04m

Ontario

Sat 13/9

14:54-12:45

1 stop13h 51m

£419

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 26/9

12:00-18:54

1 stop14h 54m

Ontario

Wed 8/10

16:49-12:50

1 stop12h 01m

£425

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 24/11

19:05-09:28

2 stops22h 23m

Ontario

Fri 5/12

10:57-10:00

1 stop15h 03m

£428

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 25/11

06:30-22:41

2 stops24h 11m

Ontario

Fri 5/12

06:00-12:15

2 stops22h 15m

£430

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 1/9

15:40-21:39

1 stop13h 59m

Ontario

Wed 17/9

16:45-12:50

1 stop12h 05m

£443

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 3/9

12:00-18:54

1 stop14h 54m

Ontario

Tue 9/9

12:45-10:50

1 stop14h 05m

£476

LondonOntario

LCY - ONT

LCYONT

London City

Sun 10/8

16:20-11:52

2 stops51h 32m

Ontario

Thu 21/8

10:50-14:25

2 stops19h 35m

£535

Flights are sorted by cheapest return flights first.

Deals found on 7/7

Showing 1-10 of 35 results

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.

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

When is the best time to book a flight to Ontario?

The price you pay for your flight to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

How long is the flight to Ontario?

On average, a flight from London to Ontario takes 17 hours 37 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 Virgin Atlantic, British Airways and Lufthansa.

What are the cheapest airlines that fly to Ontario?

The cheapest airlines flying from London to Ontario are Finnair, British Airways and KLM.

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, KLM, andFinnair 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

8.0

Very Good

7,962 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

8.0

Very Good

7,962 reviews

Delta

8.0

Very Good

7,962 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

KLM

7.8

Good

1,370 reviews

Delta

8.0

Very Good

7,962 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

Finnair

7.6

Good

1,311 reviews

Delta

8.0

Very Good

7,962 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

652 reviews

Delta

8.0

Very Good

7,962 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

JetBlue

7.3

Good

2,910 reviews

Delta

8.0

Very Good

7,962 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, Finnair 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 £38, while return flights cost around £63.
How much is a return flight to Ontario?
A return flight to Ontario will typically cost around £98, however they can be found for as little as £86.
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 34 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

Browse thousands of different options on Cheapflights for your next trip

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Fly with Cheapflights

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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£392+ 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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.

Flights to Ontario in 2025

Find the latest flights to Ontario in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 8 July 2025.

Return from

One-way from

Popular in

Cheapest in

Average price

Find flight deals to Ontario

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 8 July 2025.

Explore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on 8 July 2025.

Cheapflights Fare Finder

Locate flights to Ontario that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 8 July 2025.

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

Everything you need to know about your flight to Ontario

When is the best time to book a flight to Ontario?

Use this chart to determine the optimal time to book a return flight from London to Ontario. Price data was last updated on 27 June 2025.

How long is the flight to Ontario?

What are the most popular airlines that fly to Ontario?

What are the cheapest airlines that fly to Ontario?

Rainfall in Ontario by month

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

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 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 8 July 2025.

Get a feel of what it's like to fly with Delta, KLM, andFinnair 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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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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 8 July 2025.