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Cheap flights from Dublin to Ontario from £369

DUB — ONT
5 Oct — 12 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dublin to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Dublin to Ontario

Tue 13/1012:40 -
1 stop18h 00m
Thu 22/1012:43 -
1 stop13h 02m
Deal found 4/9£528
Mon 23/1109:40 -
1 stop19h 04m
Mon 7/1207:05 -
1 stop16h 40m
Deal found 31/8£606
Tue 8/912:40 -
1 stop14h 07m
Sun 20/912:37 -
1 stop13h 08m
Deal found 4/9£624
Thu 29/1009:40 -
1 stop17h 45m
Wed 11/1107:05 -
1 stop16h 40m
Deal found 4/9£628
Wed 30/907:30 -
2 stops23h 07m
Fri 11/1214:22 -
2 stops16h 53m
Deal found 3/9£630
Mon 28/911:35 -
1 stop19h 14m
Fri 11/1218:40 -
3 stops28h 50m
Deal found 3/9£631
Mon 28/911:00 -
1 stop15h 07m
Mon 14/1207:05 -
1 stop16h 40m
Deal found 3/9£639
Sat 17/1009:50 -
2 stops15h 56m
Sat 24/1013:52 -
2 stops33h 18m
Deal found 2/9£640
Tue 8/912:40 -
1 stop14h 07m
Sun 27/912:37 -
1 stop13h 08m
Deal found 4/9£641
Sat 3/1009:50 -
2 stops15h 56m
Sat 17/1008:03 -
2 stops15h 42m
Deal found 3/9£642
Sat 19/905:55 -
2 stops24h 45m
Wed 23/906:00 -
2 stops20h 00m
Deal found 4/9£645
Sat 17/1009:50 -
2 stops15h 56m
Sat 24/1005:00 -
3 stops18h 10m
Deal found 2/9£648

Find flight deals from Dublin to Ontario

Round-trip from

£475

One-way from

£369

Popular in

July

Cheapest in

January

Average price

£532
British Airways
  • British Airways
  • 14/1-17/1
  • 4 total stops
  • 40h 19m total
  • Dublin to Ontario
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American Airlines
  • American Airlines
  • 23/12-31/12
  • 2 total stops
  • 18h 27m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£91 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

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

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Route

Depart

Return

Price

Cheapest return flight

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Sun 27/12

08:45-23:59

2 stops23h 14m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£462

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Thu 14/1

10:50-21:59

2 stops19h 09m

Ontario

Sun 17/1

07:00-12:10

2 stops21h 10m

£475
Fastest return journey

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Sat 31/10

12:55-21:11

1 stop15h 16m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£492

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Sat 14/11

05:45-16:24

2 stops18h 39m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£557

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Sat 5/12

09:40-19:56

1 stop18h 16m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£563

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Tue 22/9

11:30-20:57

1 stop17h 27m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£605

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Mon 23/11

09:40-20:44

1 stop19h 04m

Ontario

Mon 7/12

07:05-07:45

1 stop16h 40m

£606

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Thu 14/1

10:40-18:44

1 stop16h 04m

Ontario

Sun 17/1

07:00-08:10

1 stop17h 10m

£628

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Mon 14/12

11:30-21:40

2 stops18h 10m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£651

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Wed 16/9

11:30-20:57

1 stop17h 27m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£673

Flights are sorted by cheapest return flights first.

Deals found on 4/9

Showing 1-10 of 21 resultsSorted by cheapest first
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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

Related info for your journey

  • How long is the flight from Dublin to Ontario?

    For as low as £628, British Airways can have you in Ontario from Dublin in 16h 04m. The distance between Dublin and Ontario is about 5132 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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.

See more FAQs

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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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