What are the cheapest airlines to fly from Region of Ontario to Northern Ireland one-way?

The cheapet airlines for a one-way flight from Region of Ontario to Northern Ireland are British Airways (£391), Aer Lingus (£557), and Delta (£601).

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Northern Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

What is the cheapest month to fly from Region of Ontario to Northern Ireland?

Our data shows that October tends to be the cheapest month to fly to Northern Ireland from Region of Ontario. Users have commonly found prices around £700 for the month, but tickets can be as low as £522. Due to multiple factors, prepare for potentially higher prices in December.

What is the cheapest time of day to fly from ON to NIR?

When flying from Region of Ontario to Northern Ireland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Ontario to Northern Ireland that include hotel bookings?

Yes. In addition to deals on Ontario to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Ontario to Northern Ireland?

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

Can I find deals for business class flights from Ontario to Northern Ireland?

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

£170+ Flights from Ontario to Northern Ireland

Cheap flight deals from Ontario to Northern Ireland

Round-trip from	£422
One-way from	£170
Popular in	December
Cheapest in	October
Average price	£733

20/8-27/8
2 total stops
27h 45m total
Ontario to Northern Ireland

Search Deals

23/8
1 total stop
28h 35m total
Ontario to Northern Ireland

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£64 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from Ontario to Northern Ireland

Cheapest flights from Ontario to Northern Ireland
Explore the most affordable flight options available from Ontario to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 heinäkuu 2025.

ke 20/822:15YYZ - BFS

1 stop15h 20mMultiple Airlines

ke 27/805:45BFS - YYZ

1 stop12h 25mMultiple Airlines

Deal found 9/7£422

ma 6/1018:00YYZ - BHD

2 stops14h 45mMultiple Airlines

ma 13/1008:50BHD - YYZ

1 stop11h 50mMultiple Airlines

Deal found 10/7£472

ke 19/1119:40YUL - BFS

1 stop21h 25mMultiple Airlines

su 30/1115:45BFS - YUL

1 stop25h 25mMultiple Airlines

Deal found 10/7£483

ke 19/1117:45YUL - BHD

2 stops14h 50mMultiple Airlines

su 30/1107:20BHD - YUL

2 stops17h 05mMultiple Airlines

Deal found 10/7£516

ke 19/1120:40YUL - BHD

1 stop12h 35mBritish Airways

su 30/1106:30BHD - YUL

1 stop17h 15mBritish Airways

Deal found 11/7£593

ke 19/1119:10YUL - BHD

1 stop20h 50mKLM

su 30/1117:20BHD - YUL

1 stop29h 00mKLM

Deal found 10/7£595

su 24/808:45YTZ - BFS

3 stops20h 45mMultiple Airlines

su 31/822:55BFS - YTZ

3 stops40h 25mMultiple Airlines

Deal found 10/7£648

pe 11/717:10YTZ - BHD

2 stops15h 30mMultiple Airlines

pe 25/707:00BHD - YTZ

2 stops16h 07mMultiple Airlines

Deal found 8/7£1,054

Best flights from Ontario to Northern Ireland
Discover carefully curated flight deals from Ontario to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 heinäkuu 2025.

ke 20/822:15YYZ - BFS

1 stop15h 20mMultiple Airlines

ke 27/805:45BFS - YYZ

1 stop12h 25mMultiple Airlines

Deal found 9/7£422

ke 19/1120:40YUL - BHD

1 stop12h 35mBritish Airways

su 30/1106:30BHD - YUL

1 stop17h 15mBritish Airways

Deal found 11/7£593

ke 19/1119:10YUL - BHD

1 stop20h 50mKLM

su 30/1117:20BHD - YUL

1 stop29h 00mKLM

Deal found 10/7£595

ma 6/1018:00YYZ - BHD

2 stops14h 45mMultiple Airlines

ma 13/1008:50BHD - YYZ

1 stop11h 50mMultiple Airlines

Deal found 10/7£472

ke 19/1119:40YUL - BFS

1 stop21h 25mMultiple Airlines

su 30/1115:45BFS - YUL

1 stop25h 25mMultiple Airlines

Deal found 10/7£483

ke 19/1117:45YUL - BHD

2 stops14h 50mMultiple Airlines

su 30/1107:20BHD - YUL

2 stops17h 05mMultiple Airlines

Deal found 10/7£516

su 24/808:45YTZ - BFS

3 stops20h 45mMultiple Airlines

su 31/822:55BFS - YTZ

3 stops40h 25mMultiple Airlines

Deal found 10/7£648

pe 1/815:25YTZ - BHD

2 stops13h 00mMultiple Airlines

pe 8/806:35BHD - YTZ

2 stops15h 11mMultiple Airlines

Deal found 10/7£1,600

Last-minute flights from Ontario to Northern Ireland
Discover last-minute flight deals from Ontario to Northern Ireland. Data last updated 11 heinäkuu 2025 and is based on user searches.

pe 11/717:10YTZ - BHD

2 stops15h 30mMultiple Airlines

pe 25/707:00BHD - YTZ

2 stops16h 07mMultiple Airlines

Deal found 8/7£1,054

ke 6/813:16YYZ - BHD

2 stops21h 19mIberia

ke 13/810:00BHD - YYZ

2 stops16h 31mIberia

Deal found 9/7£700

ke 6/823:30YYZ - BHD

2 stops16h 45mKLM

ke 13/806:30BHD - YYZ

2 stops15h 53mKLM

Deal found 9/7£791

pe 8/810:45YYZ - BHD

2 stops17h 40mAmerican Airlines

ma 11/809:50BHD - YYZ

2 stops16h 41mAmerican Airlines

Deal found 9/7£694

ke 13/819:15YYZ - BHD

1 stop16h 25mMultiple Airlines

ke 20/812:10BHD - YYZ

1 stop27h 50mMultiple Airlines

Deal found 10/7£494

ke 13/815:14YYZ - BHD

2 stops15h 41mBritish Airways

ke 20/810:00BHD - YYZ

2 stops16h 31mBritish Airways

Deal found 10/7£660

ke 20/822:15YYZ - BFS

1 stop15h 20mMultiple Airlines

ke 27/805:45BFS - YYZ

1 stop12h 25mMultiple Airlines

Deal found 9/7£422

su 24/808:45YTZ - BFS

3 stops20h 45mMultiple Airlines

su 31/822:55BFS - YTZ

3 stops40h 25mMultiple Airlines

Deal found 10/7£648

One-way flights from Ontario to Northern Ireland
Search for one-way flight options from Ontario to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated 11 heinäkuu 2025.

la 23/822:15YYZ - BFS

1 stop28h 35mMultiple Airlines

Deal found 9/7£170

la 23/805:55YOW - BFS

2 stops35h 35mMultiple Airlines

Deal found 9/7£239

la 23/808:50YTZ - BFS

3 stops21h 10mMultiple Airlines

Deal found 9/7£245

su 24/823:00YYZ - CAL

3 stops37h 15mMultiple Airlines

Deal found 9/7£255

su 24/806:45YUL - BFS

2 stops28h 10mMultiple Airlines

Deal found 10/7£277

ma 13/1022:10YUL - BHD

1 stop9h 45mBritish Airways

Deal found 10/7£391

ke 31/1217:25YYZ - BHD

2 stops14h 10mAer Lingus

Deal found 11/7£557

ke 31/1217:50YYZ - BHD

1 stop18h 00mDelta

Deal found 10/7£601

Cheapflights 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

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

ke 20/8

22:15-18:35

1 stop15h 20m

Belfast Intl

ke 27/8

05:45-13:10

1 stop12h 25m

£422

TorontoBelfast

YYZ - BHD

YYZBHD

Toronto Pearson Intl

ma 6/10

18:00-13:45

2 stops14h 45m

Belfast City

ma 13/10

08:50-15:40

1 stop11h 50m

£472

MontrealBelfast

YUL - BFS

YULBFS

Montreal Pierre Elliott Trudeau Intl

ke 19/11

19:40-22:05

1 stop21h 25m

Belfast Intl

su 30/11

15:45-12:10

1 stop25h 25m

£483

MontrealBelfast

YUL - BHD

YULBHD

Montreal Pierre Elliott Trudeau Intl

ke 19/11

17:45-13:35

2 stops14h 50m

Belfast City

su 30/11

07:20-19:25

2 stops17h 05m

£516

MontrealBelfast

YUL - BHD

YULBHD

Montreal Pierre Elliott Trudeau Intl

ke 19/11

20:40-14:15

1 stop12h 35m

Belfast City

su 30/11

06:30-18:45

1 stop17h 15m

£593

MontrealBelfast

YUL - BHD

YULBHD

Montreal Pierre Elliott Trudeau Intl

ke 19/11

19:10-21:00

1 stop20h 50m

Belfast City

su 30/11

17:20-17:20

1 stop29h 00m

£595

TorontoBelfast

YTZ - BFS

YTZBFS

Toronto Island

su 24/8

08:45-10:30

3 stops20h 45m

Belfast Intl

su 31/8

22:55-10:20

3 stops40h 25m

£648

TorontoBelfast

YTZ - BHD

YTZBHD

Toronto Island

pe 1/8

15:25-09:25

2 stops13h 00m

Belfast City

pe 8/8

06:35-16:46

2 stops15h 11m

£1,600

TorontoBelfast

YYZ - BFS

YYZBFS

Toronto Pearson Intl

la 23/8

22:15-07:50

1 stop28h 35m

£170

OttawaBelfast

YOW - BFS

YOWBFS

Ottawa

la 23/8

05:55-22:30

2 stops35h 35m

£239

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 16 results

Best time to book a flight from Ontario to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Ontario with our price prediction graph.

Estimated return 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 Ontario to Northern Ireland

What is the cheapest month to book a flight from Region of Ontario to Northern Ireland?

Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Northern Ireland (average of £67). Flying from Region of Ontario to Northern Ireland in July is currently the most expensive (average of £90). 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.

Reviews of airlines servicing Northern Ireland

Check out reviews from past customers who have flown with Delta, KLM, andAer Lingus from Ontario to Northern Ireland to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,951 reviews

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,372 reviews

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aer Lingus

7.1

Good

1,154 reviews

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

British Airways

6.6

Okay

7,109 reviews

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines to fly from Region of Ontario to Northern Ireland one-way?
The cheapet airlines for a one-way flight from Region of Ontario to Northern Ireland are British Airways (£391), Aer Lingus (£557), and Delta (£601).
Can I find deals for flights from Ontario to Northern Ireland that include hotel bookings?
Yes. In addition to deals on Ontario to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ontario to Northern Ireland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Northern Ireland.
Can I find deals for business class flights from Ontario to Northern Ireland?
Yes. Cheapflights offers flight deals from Ontario to Northern Ireland 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 Region of Ontario to Northern Ireland?
Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Northern Ireland (average of £67). Flying from Region of Ontario to Northern Ireland in July is currently the most expensive (average of £90). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Ontario to Northern Ireland

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Direct flights to United Kingdom

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How does Cheapflights help users find flights from Ontario to Northern Ireland?

Cheapflights makes it easy to find Ontario to Northern Ireland flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Northern Ireland?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario to Northern Ireland for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Ontario to Northern Ireland with no change fees?

Need flexible booking options for your flight to Northern Ireland from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Northern Ireland become cheaper?

Not ready to book yet? You can track prices for flights from Ontario to Northern Ireland on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Ontario to Northern Ireland from £170

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ontario to Northern Ireland

Keep the following information in mind while searching for Ontario to Northern Ireland flight deals. Data was last updated 11 heinäkuu 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Northern Ireland

Cheapest flights from Ontario to Northern IrelandExplore the most affordable flight options available from Ontario to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 heinäkuu 2025.

Explore the most affordable flight options available from Ontario to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 heinäkuu 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Ontario to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Northern Ireland

What is the cheapest month to book a flight from Region of Ontario to Northern Ireland?

Reviews of airlines servicing Northern Ireland

Check out reviews from past customers who have flown with Delta, KLM, andAer Lingus from Ontario to Northern Ireland to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the cheapest airlines to fly from Region of Ontario to Northern Ireland one-way?

Can I find deals for flights from Ontario to Northern Ireland that include hotel bookings?

How can I find direct flights from Ontario to Northern Ireland?

Can I find deals for business class flights from Ontario to Northern Ireland?

What is the cheapest month to book a flight from Region of Ontario to Northern Ireland?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Northern Ireland?

Why should you use Cheapflights to find cheap flight tickets from Ontario to Northern Ireland?

Can Cheapflights find flights from Ontario to Northern Ireland with no change fees?

Can Cheapflights notify me if prices for flights from Ontario to Northern Ireland become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Ontario to Northern Ireland
Explore the most affordable flight options available from Ontario to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 heinäkuu 2025.