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Cheap flights from Ontario to Belfast from $354

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 4/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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.
American Airlines Logo
2:31 pm - 6:55 pm
ONT
-
BHD
20h 24m
2 stops
American Airlines Logo
9:40 am - 10:14 pm
BHD
-
ONT
20h 34m
2 stops
$824American Airlines
Tue, Aug 18 - Tue, Sep 1
British Airways Logo
1:00 pm - 8:35 pm
ONT
-
BHD
23h 35m
2 stops
British Airways Logo
9:40 am - 10:14 pm
BHD
-
ONT
20h 34m
2 stops
$888British Airways
Mon, Aug 17 - Tue, Sep 1
American Airlines Logo
11:59 pm - 10:30 am
ONT
-
BHD
26h 31m
2 stops
American Airlines Logo
6:30 am - 6:17 pm
BHD
-
ONT
19h 47m
2 stops
$1,024American Airlines
Sat, Aug 15 - Wed, Sep 2
American Airlines Logo
4:54 pm - 6:45 pm
ONT
-
BHD
17h 51m
2 stops
American Airlines Logo
3:20 pm - 6:17 pm
BHD
-
ONT
34h 57m
2 stops
$1,074American Airlines
Thu, Aug 20 - Mon, Aug 31
British Airways Logo
4:52 pm - 6:10 pm
ONT
-
BHD
17h 18m
2 stops
British Airways Logo
7:30 pm - 10:36 pm
BHD
-
ONT
35h 06m
2 stops
$1,118British Airways
Fri, Apr 24 - Tue, Apr 28
British Airways Logo
7:00 am - 6:50 pm
ONT
-
BHD
28h 50m
2 stops
British Airways Logo
7:05 pm - 10:07 pm
BHD
-
ONT
35h 02m
2 stops
$1,345British Airways
Thu, Mar 26 - Sat, Apr 4
British Airways Logo
12:47 pm - 2:35 pm
ONT
-
BHD
17h 48m
2 stops
British Airways Logo
9:35 am - 10:14 pm
BHD
-
ONT
20h 39m
2 stops
$1,452British Airways
Sun, Aug 16 - Fri, Aug 21
British Airways Logo
10:25 am - 3:05 pm
ONT
-
BHD
20h 40m
2 stops
British Airways Logo
7:05 am - 7:59 pm
BHD
-
ONT
20h 54m
2 stops
$1,964British Airways
Sat, Jul 18 - Sat, Jul 25
British Airways Logo
12:39 pm - 2:35 pm
ONT
-
BHD
17h 56m
2 stops
British Airways Logo
1:10 pm - 9:44 pm
BHD
-
ONT
16h 34m
2 stops
$2,140British Airways
Sun, Jul 19 - Sun, Jul 26
British Airways Logo
12:40 pm - 2:35 pm
ONT
-
BHD
17h 55m
2 stops
British Airways Logo
1:10 pm - 9:44 pm
BHD
-
ONT
16h 34m
2 stops
$3,171British Airways
Sun, Jun 21 - Sun, Jul 5

American Airlines flights from Ontario to Belfast

Our best American Airlines deals on Ontario to Belfast flight tickets
American Airlines
Aug 18
ONT2:31 pmOntario
20h 24m
2 stops
BHD6:55 pmBelfast City
Sep 1
BHD9:40 amBelfast City
20h 34m
2 stops
ONT10:14 pmOntario
$824
American Airlines
Aug 15
ONT10:29 pmOntario
28h 01m
2 stops
BHD10:30 amBelfast City
Aug 31
BHD3:20 pmBelfast City
35h 05m
2 stops
ONT6:25 pmOntario
$1,024
American Airlines
Aug 20
ONT4:54 pmOntario
17h 51m
2 stops
BHD6:45 pmBelfast City
Aug 31
BHD3:20 pmBelfast City
34h 57m
2 stops
ONT6:17 pmOntario
$1,074

British Airways flights from Ontario to Belfast

Our best British Airways deals on Ontario to Belfast flight tickets
British Airways
Aug 17
ONT1:00 pmOntario
23h 35m
2 stops
BHD8:35 pmBelfast City
Sep 1
BHD9:40 amBelfast City
20h 34m
2 stops
ONT10:14 pmOntario
$888
British Airways
Apr 24
ONT4:52 pmOntario
17h 18m
2 stops
BHD6:10 pmBelfast City
Apr 28
BHD7:30 pmBelfast City
35h 06m
2 stops
ONT10:36 pmOntario
$1,118
British Airways
Mar 26
ONT7:00 amOntario
28h 50m
2 stops
BHD6:50 pmBelfast City
Apr 4
BHD7:05 pmBelfast City
35h 02m
2 stops
ONT10:07 pmOntario
$1,345

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 March 11, 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

Tue 8/18

2:31 pm-6:55 pm

2 stops20h 24m

Belfast City

Tue 9/1

9:40 am-10:14 pm

2 stops20h 34m

$824

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Mon 8/17

1:00 pm-8:35 pm

2 stops23h 35m

Belfast City

Tue 9/1

9:40 am-10:14 pm

2 stops20h 34m

$888

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 8/15

11:59 pm-10:30 am

2 stops26h 31m

Belfast City

Wed 9/2

6:30 am-6:17 pm

2 stops19h 47m

$1,024

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 8/20

4:54 pm-6:45 pm

2 stops17h 51m

Belfast City

Mon 8/31

3:20 pm-6:17 pm

2 stops34h 57m

$1,074

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Fri 4/24

4:52 pm-6:10 pm

2 stops17h 18m

Belfast City

Tue 4/28

7:30 pm-10:36 pm

2 stops35h 06m

$1,118

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 3/26

7:00 am-6:50 pm

2 stops28h 50m

Belfast City

Sat 4/4

7:05 pm-10:07 pm

2 stops35h 02m

$1,345

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 8/16

12:47 pm-2:35 pm

2 stops17h 48m

Belfast City

Fri 8/21

9:35 am-10:14 pm

2 stops20h 39m

$1,452

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 7/18

10:25 am-3:05 pm

2 stops20h 40m

Belfast City

Sat 7/25

7:05 am-7:59 pm

2 stops20h 54m

$1,964

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 7/19

12:39 pm-2:35 pm

2 stops17h 56m

Belfast City

Sun 7/26

1:10 pm-9:44 pm

2 stops16h 34m

$2,140
Quickest round-trip

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sun 6/21

12:40 pm-2:35 pm

2 stops17h 55m

Belfast City

Sun 7/5

1:10 pm-9:44 pm

2 stops16h 34m

$3,171

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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?

British Airways and American Airlines 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

17h 55m

Direct flights

None
The fastest flight from Ontario to Belfast takes 17h 55m
There are no direct flights from Ontario to Belfast. There are no popular flight routes from Ontario to Belfast.
Search flight deals

  • 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 17h 55m.

  • 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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Fri 4/10
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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