When did momondo last update prices for flights from Ontario Airport to Northern Ireland?

Prices for flights from Ontario Airport to Northern Ireland are updated daily.

How old do you have to be to fly from Ontario Airport to Northern Ireland?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Northern Ireland.

What documentation or ID do you need to fly to Northern Ireland?

The travel and health documents you'll need for your trip to Northern Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Northern Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$592 Cheap Flights from Ontario to Northern Ireland in 2026/27

Find the cheapest flights from Ontario to Northern Ireland

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:25 pm - 4:55 pmONT Ontario-BHD Belfast City

17h 30m2 stops Phoenix Sky Harbor Intl London Heathrow

11:35 am - 10:13 pmBHD Belfast City-ONT Ontario

18h 38m2 stops London Heathrow Phoenix Sky Harbor Intl

$906British Airways

Wed, Mar 24 - Wed, Mar 31

2:17 pm - 4:50 pmONT Ontario-BHD Belfast City

18h 33m2 stops Dallas/Fort Worth London Heathrow

8:40 am - 10:06 pmBHD Belfast City-ONT Ontario

21h 26m2 stops London Heathrow Charlotte Douglas

$1,145British Airways

Sun, Feb 28 - Wed, Mar 3

2:17 pm - 4:50 pmONT Ontario-BHD Belfast City

18h 33m2 stops Dallas/Fort Worth London Heathrow

8:40 am - 10:06 pmBHD Belfast City-ONT Ontario

21h 26m2 stops London Heathrow Charlotte Douglas

$1,146British Airways

Sun, Feb 28 - Wed, Mar 3

1:25 pm - 4:45 pmONT Ontario-BHD Belfast City

19h 20m2 stops Dallas/Fort Worth London Heathrow

9:20 am - 9:50 pmBHD Belfast City-ONT Ontario

20h 30m2 stops London Heathrow Dallas/Fort Worth

$1,256British Airways

Sat, Mar 6 - Sun, Mar 14

12:51 pm - 3:55 pmONT Ontario-BHD Belfast City

19h 04m2 stops Dallas/Fort Worth London Heathrow

10:00 am - 10:54 pmBHD Belfast City-ONT Ontario

20h 54m2 stops London Heathrow Charlotte Douglas

$1,307American Airlines

Mon, Dec 28 - Tue, Jan 5

5:44 am - 10:50 amONT Ontario-BHD Belfast City

21h 06m2 stops Dallas/Fort Worth London Heathrow

10:00 am - 10:54 pmBHD Belfast City-ONT Ontario

20h 54m2 stops London Heathrow Charlotte Douglas

$1,308American Airlines

Mon, Dec 28 - Tue, Jan 5

11:59 pm - 10:50 amONT Ontario-BHD Belfast City

26h 51m2 stops Dallas/Fort Worth London Heathrow

2:20 pm - 3:33 pmBHD Belfast City-ONT Ontario

57h 13m3 stops Manchester London Heathrow Seattle/Tacoma Intl

$1,372Multiple Airlines

Mon, Dec 28 - Tue, Jan 5

11:59 pm - 10:50 amONT Ontario-BHD Belfast City

26h 51m2 stops Dallas/Fort Worth London Heathrow

10:00 am - 3:33 pmBHD Belfast City-ONT Ontario

61h 33m3 stops Manchester London Heathrow Seattle/Tacoma Intl

$1,373Multiple Airlines

Mon, Dec 28 - Tue, Jan 5

4:25 pm - 6:50 pmONT Ontario-BHD Belfast City

18h 25m2 stops Phoenix Sky Harbor Intl London Heathrow

11:40 am - 9:57 pmBHD Belfast City-ONT Ontario

18h 17m2 stops London Heathrow Phoenix Sky Harbor Intl

$1,574British Airways

Sun, Dec 6 - Tue, Dec 22

10:34 am - 1:30 pmONT Ontario-BHD Belfast City

18h 56m2 stops Dallas/Fort Worth London Heathrow

8:30 pm - 6:50 pmBHD Belfast City-ONT Ontario

30h 20m2 stops London Heathrow Dallas/Fort Worth

$2,081British Airways

Sun, Dec 27 - Sun, Jan 3

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British Airways flights from Ontario to Northern Ireland

Our best British Airways deals on Ontario to Northern Ireland flight tickets

British Airways

Mar 24

ONT4:25 pmOntario

17h 30m

2 stops

BHD4:55 pmBelfast City

Mar 31

BHD11:35 amBelfast City

18h 38m

2 stops

ONT10:13 pmOntario

$906

British Airways

Feb 28

ONT2:17 pmOntario

18h 33m

2 stops

BHD4:50 pmBelfast City

Mar 3

BHD8:40 amBelfast City

21h 26m

2 stops

ONT10:06 pmOntario

$1,145

British Airways

Feb 28

ONT2:17 pmOntario

18h 33m

2 stops

BHD4:50 pmBelfast City

Mar 3

BHD8:40 amBelfast City

21h 26m

2 stops

ONT10:06 pmOntario

$1,146

American Airlines flights from Ontario to Northern Ireland

Our best American Airlines deals on Ontario to Northern Ireland flight tickets

American Airlines

Dec 28

ONT12:51 pmOntario

19h 04m

2 stops

BHD3:55 pmBelfast City

Jan 5

BHD10:00 amBelfast City

20h 54m

2 stops

ONT10:54 pmOntario

$1,307

American Airlines

Dec 28

ONT5:44 amOntario

21h 06m

2 stops

BHD10:50 amBelfast City

Jan 5

BHD10:00 amBelfast City

20h 54m

2 stops

ONT10:54 pmOntario

$1,308

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioBelfast

ONT Ontario - BHD Belfast City

ONTBHD

Ontario

Wed 3/24

4:25 pm-4:55 pm

2 stops17h 30m

Belfast City

Wed 3/31

11:35 am-10:13 pm

2 stops18h 38m

$906

OntarioBelfast

ONT Ontario - BHD Belfast City

ONTBHD

Ontario

Sun 2/28

2:17 pm-4:50 pm

2 stops18h 33m

Belfast City

Wed 3/3

8:40 am-10:06 pm

2 stops21h 26m

$1,145

OntarioBelfast

ONT Ontario - BHD Belfast City

ONTBHD

Ontario

Sun 2/28

2:17 pm-4:50 pm

2 stops18h 33m

Belfast City

Wed 3/3

8:40 am-10:06 pm

2 stops21h 26m

$1,146

OntarioBelfast

ONT Ontario - BHD Belfast City

ONTBHD

Ontario

Sat 3/6

1:25 pm-4:45 pm

2 stops19h 20m

Belfast City

Sun 3/14

9:20 am-9:50 pm

2 stops20h 30m

$1,256

OntarioBelfast

ONT Ontario - BHD Belfast City

ONTBHD

Ontario

Mon 12/28

12:51 pm-3:55 pm

2 stops19h 04m

Belfast City

Tue 1/5

10:00 am-10:54 pm

2 stops20h 54m

$1,307

OntarioBelfast

ONT Ontario - BHD Belfast City

ONTBHD

Ontario

Mon 12/28

5:44 am-10:50 am

2 stops21h 06m

Belfast City

Tue 1/5

10:00 am-10:54 pm

2 stops20h 54m

$1,308

OntarioBelfast

ONT Ontario - BHD Belfast City

ONTBHD

Ontario

Mon 12/28

11:59 pm-10:50 am

2 stops26h 51m

Belfast City

Tue 1/5

2:20 pm-3:33 pm

3 stops57h 13m

$1,372

OntarioBelfast

ONT Ontario - BHD Belfast City

ONTBHD

Ontario

Mon 12/28

11:59 pm-10:50 am

2 stops26h 51m

Belfast City

Tue 1/5

10:00 am-3:33 pm

3 stops61h 33m

$1,373

OntarioBelfast

ONT Ontario - BHD Belfast City

ONTBHD

Ontario

Sun 12/6

4:25 pm-6:50 pm

2 stops18h 25m

Belfast City

Tue 12/22

11:40 am-9:57 pm

2 stops18h 17m

$1,574

OntarioBelfast

ONT Ontario - BHD Belfast City

ONTBHD

Ontario

Sun 12/27

10:34 am-1:30 pm

2 stops18h 56m

Belfast City

Sun 1/3

8:30 pm-6:50 pm

2 stops30h 20m

$2,081

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Northern Ireland

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 Northern Ireland?

American Airlines is the most popular carrier operating from Ontario to Northern Ireland

Cheap Ontario to Northern Ireland flight deals and tips

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

Best Price Found	$592
Fastest flight time	18h 05m
Direct flights	None

The best one-way flight to Northern Ireland from Ontario in the past 72 hours is $592. The best round-trip flight deal from Ontario to Northern Ireland found on momondo in the last 72 hours is $906.

The fastest flight from Ontario to Northern Ireland takes 18h 05m

There are no direct flights from Ontario to Northern Ireland. There are no popular flight routes from Ontario to Northern Ireland.

Search flight deals

Frequently asked questions about flying from Ontario to Northern Ireland

When did momondo last update prices for flights from Ontario Airport to Northern Ireland?
Prices for flights from Ontario Airport to Northern Ireland are updated daily.
How old do you have to be to fly from Ontario Airport to Northern Ireland?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Northern Ireland.
What documentation or ID do you need to fly to Northern Ireland?
The travel and health documents you'll need for your trip to Northern Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Northern Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Northern Ireland?

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 Northern Ireland from Ontario.

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

All flight searches from Ontario to Northern Ireland on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Northern Ireland?

momondo provides multiple filters to help you find the best flight to Northern Ireland from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Ontario to Northern Ireland flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.