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Ontario

$807+ Cheap flights from Belfast to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — ONT
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Find flight deals from Belfast to Ontario

Cheapest flights from Belfast to Ontario
Explore the most affordable flight options available from Belfast to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This American Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:35 amBHD - ONT
2 stops19h 17mAmerican Airlines
Wed 11/510:47 amONT - BHD
2 stops19h 28mAmerican Airlines
Deal found 10/16$848

Cheap flight deals from Belfast to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Belfast (BF1) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 16, 2025.

Round-trip from

$807
(American Airlines)

Popular in

February

Cheapest in

January

Average price

$646
From Belfast to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Belfast to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from Belfast to Ontario that are best for you.

Fly from

Belfast

Fly to

Ontario

Route

Depart

Return

Price

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 3/5

6:35 am-9:57 pm

2 stops23h 22m

Ontario

Mon 3/9

10:57 am-2:15 pm

2 stops20h 18m

$807

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 2/26

11:05 am-11:43 pm

2 stops20h 38m

Ontario

Mon 3/2

11:05 am-2:15 pm

2 stops19h 10m

$811

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Sat 11/1

6:35 am-6:52 pm

2 stops19h 17m

Ontario

Wed 11/5

10:47 am-2:15 pm

2 stops19h 28m

$848

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Best time to book a flight from Belfast to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Belfast with our price prediction graph.
Estimated round-trip 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 from Belfast to Ontario

What is the cheapest month to book a flight from Belfast to Ontario?

Currently, November is the cheapest month in which you can book a flight from Belfast to Ontario (average of $477). Flying from Belfast to Ontario in December is currently the most expensive (average of $678). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Belfast to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Belfast?

    If you book a flight to Ontario from Belfast, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Belfast to Ontario per day from 0 different airlines.

  • How long is the flight from Belfast to Ontario?

    American Airlines can get you from Belfast to Ontario in just under 23h 22m. Your travel time can differ by up to . Airlines will cover a distance of 5095 mi.

  • Can I find deals for flights from Belfast to Ontario that include hotel bookings?

    Yes. In addition to deals on Belfast to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Belfast to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to Ontario.

  • Can I find deals for business class flights from Belfast to Ontario?

    Yes. Cheapflights offers flight deals from Belfast to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Belfast to Ontario?

    Currently, November is the cheapest month in which you can book a flight from Belfast to Ontario (average of $477). Flying from Belfast to Ontario in December is currently the most expensive (average of $678). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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