Find flights
Airlines
Travel Guide

£295+ 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 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

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 27 November 2025.

Return from

£440

One-way from

£295

Popular in

December

Cheapest in

September

Average price

£482
Virgin Atlantic
  • Virgin Atlantic
  • 4/4-20/4
  • 2 total stops
  • 49h 45m total
  • London to Los Angeles
Search Deals
21/1
  • 21/1
  • 3 total stops
  • 55h 03m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£31 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for return flights in November 2025
Search Deals

Find flight deals to Ontario

Enter your travel dates to find the best prices.

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 27 November 2025.

Tue 30/1210:45LHR - ONT
1 stop21h 09mVirgin Atlantic
Mon 19/107:30ONT - LHR
1 stop19h 00mVirgin Atlantic
Deal found 26/11£429
Tue 30/1210:45LHR - ONT
1 stop21h 09mVirgin Atlantic
Sun 18/112:41ONT - LHR
1 stop35h 09mVirgin Atlantic
Deal found 26/11£437
Thu 11/1216:30LHR - ONT
1 stop15h 25mAmerican Airlines
Sat 21/217:06ONT - LHR
1 stop12h 09mAmerican Airlines
Deal found 24/11£445
Thu 4/1211:45LHR - ONT
1 stop17h 22mBritish Airways
Tue 9/1212:46ONT - LHR
1 stop13h 14mBritish Airways
Deal found 24/11£450
Wed 10/1206:30LHR - ONT
2 stops24h 17mVirgin Atlantic
Wed 31/1206:00ONT - LHR
1 stop20h 00mVirgin Atlantic
Deal found 26/11£451
Wed 3/1212:20LHR - ONT
1 stop18h 27mVirgin Atlantic
Wed 17/1213:29ONT - LHR
1 stop12h 31mVirgin Atlantic
Deal found 26/11£453
Fri 12/1211:45LHR - ONT
1 stop15h 54mAmerican Airlines
Sun 11/116:45ONT - LHR
1 stop12h 30mAmerican Airlines
Deal found 24/11£458
Tue 30/1210:45LHR - ONT
1 stop21h 09mVirgin Atlantic
Fri 16/113:10ONT - LHR
1 stop12h 50mVirgin Atlantic
Deal found 26/11£460
Wed 3/1210:05LHR - ONT
1 stop16h 12mBritish Airways
Wed 25/206:10ONT - LHR
1 stop16h 40mBritish Airways
Deal found 25/11£461
Tue 30/1210:45LHR - ONT
1 stop21h 09mVirgin Atlantic
Sat 17/106:00ONT - LHR
2 stops17h 50mVirgin Atlantic
Deal found 24/11£461
Thu 11/1207:50LCY - ONT
2 stops22h 29mBritish Airways
Fri 9/123:59ONT - LCY
2 stops48h 51mBritish Airways
Deal found 26/11£593
Wed 24/1211:45LGW - ONT
2 stops34h 07mBritish Airways
Sun 15/314:47ONT - LGW
2 stops45h 13mBritish Airways
Deal found 26/11£607

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 27 November 2025.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 18/2

12:30-13:56

2 stops33h 26m

Ontario

Sun 22/2

22:40-07:30

2 stops48h 50m

£420

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 21/3

15:05-22:38

1 stop14h 33m

Ontario

Mon 13/4

13:00-09:50

1 stop12h 50m

£436

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/4

11:20-17:16

1 stop13h 56m

Ontario

Tue 28/4

13:00-09:50

1 stop12h 50m

£442

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 18/2

12:20-13:54

1 stop33h 34m

Ontario

Sun 22/2

07:30-10:30

1 stop19h 00m

£451

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sun 14/12

11:45-21:07

1 stop17h 22m

Ontario

Sat 10/1

16:45-13:15

1 stop12h 30m

£458

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 24/3

09:55-19:45

1 stop16h 50m

Ontario

Wed 15/4

11:01-08:05

1 stop13h 04m

£464

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 25/3

11:45-21:24

1 stop16h 39m

Ontario

Thu 16/4

11:01-08:05

1 stop13h 04m

£464

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 24/12

06:20-22:33

2 stops24h 13m

Ontario

Wed 31/12

06:00-10:00

1 stop20h 00m

£469

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 28/3

15:05-22:38

1 stop14h 33m

Ontario

Wed 15/4

13:00-09:50

1 stop12h 50m

£475

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 31/1

06:30-22:51

2 stops24h 21m

Ontario

Thu 5/2

12:41-11:40

1 stop14h 59m

£483

Flights are sorted by cheapest return flights first.

Deals found on 24/11

Showing 1-10 of 60 results
1
2
3
...
6

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?

Use this chart to determine the optimal time to book a return flight from London to Ontario. Price data was last updated on 21 November 2025.

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 81 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 53 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 Lufthansa.

British Airways
British Airways
From £374
Virgin Atlantic
Virgin Atlantic
From £366
Lufthansa
Lufthansa
From £396
KLM
KLM
From £375

What are the cheapest airlines that fly to Ontario?

The cheapest airlines flying from London to Ontario are Finnair, 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.

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 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 27 November 2025.
Get a feel of what it's like to fly with Finnair, Virgin Atlantic, andUnited Airlines 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.
Finnair
7.6
Good
1,334 reviews
Check prices

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,334 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Virgin Atlantic
7.5
Good
675 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
United Airlines
7.4
Good
9,050 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Lufthansa
6.8
Okay
7,594 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,539 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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.

  • 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 17 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

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.
First Class
Business Class
Prem Econ Class
Economy 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?

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.