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Cheap flights from Ontario to Belfast from $322

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Belfast 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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0 bags

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Find the cheapest flights from Ontario to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
9:55 am - 4:55 pm
ONT
-
BHD
23h 00m
2 stops
Delta Logo
9:50 am - 11:44 pm
BHD
-
ONT
21h 54m
2 stops
$948Delta
Mon, Aug 17 - Fri, Sep 4
British Airways Logo
4:59 pm - 6:45 pm
ONT
-
BHD
17h 46m
2 stops
British Airways Logo
6:30 am - 11:06 pm
BHD
-
ONT
24h 36m
2 stops
$1,046British Airways
Sun, Sep 13 - Thu, Sep 17
British Airways Logo
4:59 pm - 6:45 pm
ONT
-
BHD
17h 46m
2 stops
British Airways Logo
9:35 am - 9:08 pm
BHD
-
ONT
19h 33m
2 stops
$1,097British Airways
Sun, Sep 13 - Thu, Sep 17
British Airways Logo
12:59 pm - 8:35 pm
ONT
-
BHD
23h 36m
2 stops
British Airways Logo
9:35 am - 10:58 pm
BHD
-
ONT
21h 23m
2 stops
$1,101British Airways
Sun, Aug 16 - Thu, Aug 20
British Airways Logo
12:33 pm - 5:40 pm
ONT
-
BHD
21h 07m
2 stops
British Airways Logo
9:35 am - 10:58 pm
BHD
-
ONT
21h 23m
2 stops
$1,102British Airways
Sun, Aug 16 - Thu, Aug 20
British Airways Logo
12:33 pm - 3:20 pm
ONT
-
BHD
18h 47m
2 stops
British Airways Logo
2:35 pm - 6:15 pm
BHD
-
ONT
35h 40m
2 stops
$1,110British Airways
Tue, Aug 18 - Tue, Sep 1
British Airways Logo
4:59 pm - 6:45 pm
ONT
-
BHD
17h 46m
2 stops
British Airways Logo
8:35 pm - 5:48 pm
BHD
-
ONT
29h 13m
2 stops
$1,119British Airways
Sun, Sep 13 - Thu, Sep 17
British Airways Logo
12:19 pm - 3:20 pm
ONT
-
BHD
19h 01m
2 stops
British Airways Logo
9:40 am - 10:38 pm
BHD
-
ONT
20h 58m
2 stops
$1,339British Airways
Tue, May 12 - Tue, May 26
British Airways Logo
11:59 pm - 10:30 am
ONT
-
BHD
26h 31m
2 stops
British Airways Logo
7:05 pm - 7:15 pm
BHD
-
ONT
32h 10m
2 stops
$1,347British Airways
Sat, Aug 29 - Sat, Sep 5
British Airways Logo
4:52 pm - 6:55 pm
ONT
-
BHD
18h 03m
2 stops
British Airways Logo
9:40 am - 7:56 pm
BHD
-
ONT
18h 16m
2 stops
$1,359British Airways
Tue, May 12 - Tue, May 26

British Airways flights from Ontario to Belfast

Our best British Airways deals on Ontario to Belfast flight tickets
British Airways
Sep 13
ONT4:59 pmOntario
17h 46m
2 stops
BHD6:45 pmBelfast City
Sep 17
BHD6:30 amBelfast City
24h 36m
2 stops
ONT11:06 pmOntario
$1,046
British Airways
Sep 13
ONT4:59 pmOntario
17h 46m
2 stops
BHD6:45 pmBelfast City
Sep 17
BHD9:35 amBelfast City
19h 33m
2 stops
ONT9:08 pmOntario
$1,097
British Airways
Aug 16
ONT12:59 pmOntario
23h 36m
2 stops
BHD8:35 pmBelfast City
Aug 20
BHD9:35 amBelfast City
21h 23m
2 stops
ONT10:58 pmOntario
$1,101

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Belfast 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, momondo users made 832,500 searches. Data last updated April 27, 2026.
Use the filters below to find and compare flights from Ontario to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 8/17

9:55 am-4:55 pm

2 stops23h 00m

Belfast City

Fri 9/4

9:50 am-11:44 pm

2 stops21h 54m

$948

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 9/13

4:59 pm-6:45 pm

2 stops17h 46m

Belfast City

Thu 9/17

6:30 am-11:06 pm

2 stops24h 36m

$1,046

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 9/13

4:59 pm-6:45 pm

2 stops17h 46m

Belfast City

Thu 9/17

9:35 am-9:08 pm

2 stops19h 33m

$1,097

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 8/16

12:59 pm-8:35 pm

2 stops23h 36m

Belfast City

Thu 8/20

9:35 am-10:58 pm

2 stops21h 23m

$1,101

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 8/16

12:33 pm-5:40 pm

2 stops21h 07m

Belfast City

Thu 8/20

9:35 am-10:58 pm

2 stops21h 23m

$1,102

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 8/18

12:33 pm-3:20 pm

2 stops18h 47m

Belfast City

Tue 9/1

2:35 pm-6:15 pm

2 stops35h 40m

$1,110

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 9/13

4:59 pm-6:45 pm

2 stops17h 46m

Belfast City

Thu 9/17

8:35 pm-5:48 pm

2 stops29h 13m

$1,119

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 5/12

12:19 pm-3:20 pm

2 stops19h 01m

Belfast City

Tue 5/26

9:40 am-10:38 pm

2 stops20h 58m

$1,339

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 8/29

11:59 pm-10:30 am

2 stops26h 31m

Belfast City

Sat 9/5

7:05 pm-7:15 pm

2 stops32h 10m

$1,347
Quickest round-trip

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 5/12

4:52 pm-6:55 pm

2 stops18h 03m

Belfast City

Tue 5/26

9:40 am-7:56 pm

2 stops18h 16m

$1,359

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from Ontario to Belfast

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Belfast?

Delta, KLM, and British Airways are the most popular carriers operating from Ontario to Belfast

Cheap Ontario to Belfast flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Belfast

Fastest flight time

15h 50m

Direct flights

None
The fastest flight from Ontario to Belfast takes 15h 50m
There are no direct flights from Ontario to Belfast. There are no popular flight routes from Ontario to Belfast.
Search flight deals

Frequently asked questions about flying from Ontario to Belfast

  • How far is Ontario to Belfast by plane?

    The straight-line distance from Ontario to Belfast is 5095.8 mi. By plane, this route typically takes 15h 50m.

  • When did momondo last update prices for flights from Ontario Airport to Belfast?

    Prices for flights from Ontario Airport to Belfast are refreshed on a daily basis.

  • How old do you have to be to fly from Ontario Airport to Belfast?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Belfast.

  • What documentation or ID do you need to fly to Belfast?

    The required travel and health documents for your Belfast 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 Belfast. 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 from Ontario to Belfast?

Finding the right flight to Belfast from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Belfast quick and easy, saving you time and money.

Can I find flights from Ontario to Belfast with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Belfast from Ontario with this policy.

How can momondo help me find flights from Ontario to Belfast?

Once all potential Ontario to Belfast flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Belfast right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Belfast from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport