£347 Cheap flights to Ontario
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Ontario departing on 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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What is the cheapest month to fly to Ontario?
The month of February is, on average, the cheapest month to fly to Ontario from United Kingdom, with most prices found around £402. If you’re not able to fly to Ontario in February, then January is your next best option. Flight prices from United Kingdom to Ontario during January average around £410.
What is the cheapest day to depart on your flight to Ontario?
The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as £484. This is often the case because there is less demand to fly during this day of the week. Flights from United Kingdom to Ontario on a Sunday will generally be more expensive and average around £559. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Ontario?
Flying to Ontario from United Kingdom in the evening is the least expensive time of day to depart. momondo users have found prices as low as £473 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to Ontario is at midday when prices are around £556.
How far in advance should I book a flight to Ontario?
You are more likely to see cheaper flights to Ontario from United Kingdom when booking 26 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around £524 when searching 26 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from United Kingdom for as low as £405 on momondo.
Cheapest flights to Ontario
Find the cheapest flights to Ontario from your nearest city or airport
| CHEAPEST MONTH TO FLY TO ONTARIO FROM LONDON HEATHROW AIRPORT | February | 18% cheaper | Flying from London Heathrow Airport to Ontario costs on average just £433 in February |
| MOST EXPENSIVE MONTH TO FLY TO ONTARIO FROM LONDON HEATHROW AIRPORT | August | 34% more expensive | It costs about £707 for flights to Ontario from London Heathrow Airport in August |
| MOST POPULAR MONTH TO FLY TO ONTARIO FROM LONDON HEATHROW AIRPORT | November | 573% more users visited | More momondo users searched in flights to Ontario from London Heathrow Airport in November than any other month |
Cheap Ontario flight deals and tips
Summary info about Ontario flight prices, duration and airlines
Best One-Way Price | £347 |
|---|---|
Best Round-Trip Price | £356 |
Fastest flight time | 13h 58m |
Popular in | August |
Frequently asked questions about flying to Ontario
How far in advance should I book a flight to Ontario?
Most flyers found that booking tickets 77 days in advance of their planned departure date is the best time to get cheap flights to Ontario. During this timeframe, flight prices are around £543. However, in the past 72 hours, people saw flights from United Kingdom for as low as £390.
Is there an alternative airport near Ontario?
Ontario Airport, San Bernardino Int Airport, Santa Ana J. Wayne/Orange Cnty Airport, Long Beach Municipal Airport or Burbank Bob Hope Airport can be an alternative airport used for travel to Ontario.
Is there a cheaper alternative to flying into Ontario?
The cheapest airport near Ontario is typically Santa Ana J. Wayne/Orange Cnty Airport, with an average price of £172/person. These prices vary based on where travellers are coming from. It is suggested that travellers looking to save money try momondo’s Airport-to-Airport Pricing Tool.
What is the absolute cheapest flight to Ontario?
The best deal found on momondo in the last two weeks was a flight to Ontario from Las Vegas for £46. This is 75% cheaper than most flight deals to Ontario. To find the cheapest price to Ontario from your area, use momondo’s Airport-to-Airport Pricing Tool.
When did momondo last update prices for flights to Ontario Airport?
Prices for flights to Ontario Airport are updated daily.
How many operators does momondo search for flights to Ontario Airport?
The number of operators available for flights to Ontario Airport is 7 as of June 2025.
How old do you have to be to fly to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Why use momondo?
Why should I use momondo to find a flight deal to Ontario?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario.
Can I find flights to Ontario with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for flights to Ontario to just show those with flexible booking policies.
How can momondo help me find flights to Ontario?
momondo helps you find the best flight to Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select fights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight to Ontario right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Ontario, momondo offers a useful price alert feature which will track prices for flights to Ontario and alert you when they change.