What are the cheapest airlines flying from Dublin to Ontario round-trip?

Cheapflights users have booked flights from Dublin to Ontario round-trip from £404. Other airlines that can offer you cheap pricing are United Airlines, from £407, and British Airways, from £446.

What are the cheapest airlines to fly from Dublin to Ontario one-way?

£450 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on British Airways and Delta, with prices starting from £481 and £490, respectively.

What is the cheapest day to fly from Dublin to Ontario?

Travellers seeking maximum savings on their Dublin to Ontario flight should consider departing on Tuesday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

How far in advance should I book a flight from Dublin to Ontario?

To save up to 45% on this flight, we recommend booking at least 41 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Dublin to Ontario from £432 1-2 weeks out and tickets from £601 for flights departing within the next 72 hours.

What is the cheapest month to fly from Dublin to Ontario?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, February can be a great choice for travel to Ontario. Flights to Ontario from Dublin in February are about £504 on average during February, but can be found for as low as £322.

What is the cheapest time of day to fly from DUB to ONT?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Dublin to Ontario as you normally would.

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

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

How can I find direct flights from Dublin to Ontario?

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

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

Yes. Cheapflights offers flight deals from Dublin 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.

£404+ Flights from Dublin to Ontario

Cheap flight deals from Dublin to Ontario

Round-trip from	£404
Popular in	July
Cheapest in	February
Average price	£581

American Airlines
26/9-4/10
4 total stops
37h 49m total
Dublin to Ontario

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£79 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Find flight deals from Dublin to Ontario

Cheapest flights from Dublin to Ontario
Explore the most affordable flight options available from Dublin to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 6月 2025.

週五 26/908:35DUB - ONT

2 stops18h 19mAmerican Airlines

週六 4/1013:10ONT - DUB

2 stops19h 30mAmerican Airlines

Deal found 11/6£404

週四 4/909:50DUB - ONT

2 stops20h 40mUnited Airlines

週五 12/907:00ONT - DUB

2 stops40h 10mUnited Airlines

Deal found 11/6£407

週二 24/610:30DUB - ONT

2 stops19h 08mBritish Airways

週六 6/913:10ONT - DUB

2 stops36h 30mBritish Airways

Deal found 12/6£446

週四 13/1105:55DUB - ONT

2 stops19h 22mDelta

週三 3/1207:00ONT - DUB

2 stops17h 45mDelta

Deal found 11/6£497

週四 31/711:45DUB - ONT

1 stop15h 08mIberia

週三 6/808:15ONT - DUB

1 stop17h 30mIberia

Deal found 11/6£541

週四 19/611:00DUB - ONT

1 stop16h 54mKLM

週五 4/707:05ONT - DUB

1 stop17h 40mKLM

Deal found 12/6£564

週二 17/605:55DUB - ONT

2 stops23h 09mMultiple Airlines

週四 2/1007:02ONT - DUB

1 stop18h 43mMultiple Airlines

Deal found 11/6£647

週五 1/809:50DUB - ONT

2 stops39h 35mAir Canada

週日 3/805:05ONT - DUB

2 stops18h 40mAir Canada

Deal found 11/6£782

週六 2/811:00DUB - ONT

1 stop16h 20mAir France

週一 4/811:40ONT - DUB

1 stop13h 05mAir France

Deal found 11/6£865

Best flights from Dublin to Ontario
Discover carefully curated flight deals from Dublin to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 6月 2025.

週五 26/908:35DUB - ONT

2 stops18h 19mAmerican Airlines

週六 4/1013:10ONT - DUB

2 stops19h 30mAmerican Airlines

Deal found 11/6£404

週四 4/909:50DUB - ONT

2 stops20h 40mUnited Airlines

週五 12/907:00ONT - DUB

2 stops40h 10mUnited Airlines

Deal found 11/6£407

週二 24/610:30DUB - ONT

2 stops19h 08mBritish Airways

週六 6/913:10ONT - DUB

2 stops36h 30mBritish Airways

Deal found 12/6£446

週四 13/1105:55DUB - ONT

2 stops19h 22mDelta

週三 3/1207:00ONT - DUB

1 stop16h 45mDelta

Deal found 11/6£497

週四 31/711:45DUB - ONT

1 stop19h 12mIberia

週二 5/812:46ONT - DUB

1 stop12h 59mIberia

Deal found 11/6£541

週三 25/611:00DUB - ONT

1 stop19h 25mKLM

週三 2/707:05ONT - DUB

1 stop17h 40mKLM

Deal found 11/6£624

週五 1/809:50DUB - ONT

2 stops39h 35mAir Canada

週日 3/805:05ONT - DUB

2 stops18h 40mAir Canada

Deal found 11/6£782

週六 2/811:00DUB - ONT

1 stop16h 20mAir France

週一 4/811:40ONT - DUB

1 stop13h 05mAir France

Deal found 11/6£865

週二 5/814:15DUB - ONT

2 stops15h 50mMultiple Airlines

週六 9/809:15ONT - DUB

2 stops17h 50mMultiple Airlines

Deal found 11/6£1,228

Last-minute flights from Dublin to Ontario
Discover last-minute flight deals from Dublin to Ontario. Data last updated 13 6月 2025 and is based on user searches.

週二 17/605:55DUB - ONT

2 stops23h 09mMultiple Airlines

週四 2/1007:02ONT - DUB

1 stop18h 43mMultiple Airlines

Deal found 11/6£647

週三 18/611:35DUB - ONT

1 stop18h 51mUnited Airlines

週三 1/1007:02ONT - DUB

2 stops19h 18mUnited Airlines

Deal found 11/6£532

週三 18/611:00DUB - ONT

1 stop16h 54mDelta

週四 2/1007:00ONT - DUB

2 stops18h 15mDelta

Deal found 11/6£665

週四 19/611:00DUB - ONT

1 stop16h 54mKLM

週四 3/707:05ONT - DUB

1 stop17h 40mKLM

Deal found 12/6£564

週四 19/614:15DUB - ONT

2 stops17h 40mMultiple Airlines

週四 26/612:00ONT - DUB

2 stops15h 05mMultiple Airlines

Deal found 10/6£1,161

週二 24/610:30DUB - ONT

2 stops19h 08mBritish Airways

週二 2/916:54ONT - DUB

2 stops18h 36mBritish Airways

Deal found 12/6£446

週六 26/711:00DUB - ONT

1 stop16h 20mDelta

週六 2/811:40ONT - DUB

1 stop13h 05mDelta

Deal found 10/6£634

週四 31/711:45DUB - ONT

1 stop15h 08mIberia

週三 6/808:15ONT - DUB

1 stop17h 30mIberia

Deal found 11/6£541

One-way flights from Dublin to Ontario
Search for one-way flight options from Dublin to Ontario. Find affordable one-way fares based on user searches. Data last updated 13 6月 2025.

週一 8/1214:05DUB - ONT

1 stop27h 29mMultiple Airlines

Deal found 10/6£447

週四 10/711:30DUB - ONT

1 stop18h 29mJetBlue

Deal found 11/6£450

週日 14/910:55DUB - ONT

2 stops19h 22mBritish Airways

Deal found 11/6£481

週三 10/1209:45DUB - ONT

1 stop17h 57mDelta

Deal found 10/6£490

週三 19/1109:45DUB - ONT

1 stop17h 57mKLM

Deal found 11/6£494

週五 25/711:45DUB - ONT

1 stop19h 12mIberia

Deal found 12/6£595

週二 24/613:45DUB - ONT

2 stops18h 14mAmerican Airlines

Deal found 11/6£739

週三 23/709:20DUB - ONT

2 stops40h 23mAir Canada

Deal found 12/6£926

週六 28/609:20DUB - ONT

2 stops19h 34mUnited Airlines

Deal found 11/6£938

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

DublinOntario

DUB - ONT

DUBONT

Dublin

週五 26/9

08:35-18:54

2 stops18h 19m

Ontario

週六 4/10

13:10-16:40

2 stops19h 30m

£404

DublinOntario

DUB - ONT

DUBONT

Dublin

週四 4/9

09:50-22:30

2 stops20h 40m

Ontario

週五 12/9

07:00-07:10

2 stops40h 10m

£407

DublinOntario

DUB - ONT

DUBONT

Dublin

週二 24/6

10:30-21:38

2 stops19h 08m

Ontario

週二 2/9

16:54-19:30

2 stops18h 36m

£446

DublinOntario

DUB - ONT

DUBONT

Dublin

週四 13/11

05:55-17:17

2 stops19h 22m

Ontario

週三 3/12

07:00-07:45

1 stop16h 45m

£497

DublinOntario

DUB - ONT

DUBONT

Dublin

週四 31/7

11:45-18:53

1 stop15h 08m

Ontario

週四 7/8

08:14-09:45

1 stop17h 31m

£541

DublinOntario

DUB - ONT

DUBONT

Dublin

週三 25/6

11:00-22:25

1 stop19h 25m

Ontario

週三 2/7

07:05-08:45

1 stop17h 40m

£624

DublinOntario

DUB - ONT

DUBONT

Dublin

週五 1/8

09:50-17:25

2 stops39h 35m

Ontario

週日 3/8

05:05-07:45

2 stops18h 40m

£782

DublinOntario

DUB - ONT

DUBONT

Dublin

週六 2/8

11:00-19:20

1 stop16h 20m

Ontario

週一 4/8

11:40-08:45

1 stop13h 05m

£865

DublinOntario

DUB - ONT

DUBONT

Dublin

週二 5/8

14:15-22:05

2 stops15h 50m

Ontario

週六 9/8

09:15-11:05

2 stops17h 50m

£1,228

DublinOntario

DUB - ONT

DUBONT

Dublin

週一 8/12

14:05-09:34

1 stop27h 29m

£447

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Showing 1-10 of 18 results

Best time to book a flight from Dublin to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Dublin 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 Dublin to Ontario

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

Currently, March is the cheapest month in which you can book a flight from Dublin to Ontario (average of £516). Flying from Dublin to Ontario in August is currently the most expensive (average of £827). 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.

Rainfall in Ontario by month

In terms of precipitation, rainfall in Ontario ranges from 3.0 - 86.0 inches per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

Temperature in Ontario by month

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

Reviews of airlines servicing Ontario

Peruse reviews from past customers who have flown with Delta, KLM and Air France from Dublin to Ontario to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,950 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France

7.5

Good

1,463 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

JetBlue

7.3

Good

2,923 reviews

Delta

8.0

Very Good

7,950 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines flying from Dublin to Ontario round-trip?
Cheapflights users have booked flights from Dublin to Ontario round-trip from £404. Other airlines that can offer you cheap pricing are United Airlines, from £407, and British Airways, from £446.
What are the cheapest airlines to fly from Dublin to Ontario one-way?
£450 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on British Airways and Delta, with prices starting from £481 and £490, respectively.
Can I find deals for flights from Dublin to Ontario that include hotel bookings?
Yes. In addition to deals on Dublin to Ontario flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Dublin to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to Ontario.
Can I find deals for business class flights from Dublin to Ontario?
Yes. Cheapflights offers flight deals from Dublin 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 Dublin to Ontario?
Currently, March is the cheapest month in which you can book a flight from Dublin to Ontario (average of £516). Flying from Dublin to Ontario in August is currently the most expensive (average of £827). 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

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How does Cheapflights help users find flights from Dublin to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Dublin to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from Dublin.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Dublin to Ontario, users can toggle the no change fees filter when performing a flight search.

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

Of course! You can now track prices for flights from Dublin to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Dublin to Ontario from £404

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Dublin to Ontario

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Dublin to Ontario

Cheapest flights from Dublin to OntarioExplore the most affordable flight options available from Dublin to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 6月 2025.

Explore the most affordable flight options available from Dublin to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 6月 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Dublin to Ontario

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

Cheapflights Insights

Everything you need to know about your flight from Dublin to Ontario

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

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

Reviews of airlines servicing Ontario

Peruse reviews from past customers who have flown with Delta, KLM and Air France from Dublin to Ontario to help guide your decision. You can also see how each airline compares 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 Dublin to Ontario. 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 flying from Dublin to Ontario round-trip?

What are the cheapest airlines to fly from Dublin to Ontario one-way?

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

How can I find direct flights from Dublin to Ontario?

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

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

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 Dublin to Ontario

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 Dublin to Ontario?

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

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

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

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Dublin to Ontario
Explore the most affordable flight options available from Dublin to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 6月 2025.