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Cheap flights from Dublin to Ontario from £539

DUB — ONT
27 Sep — 4 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 3/1120:40 -
2 stops30h 02m
Tue 24/1110:37 -
2 stops19h 43m
Deal found 24/8£539
Wed 4/1118:30 -
2 stops23h 10m
Wed 25/1106:00 -
1 stop17h 15m
Deal found 24/8£542
Thu 5/1112:55 -
2 stops16h 58m
Thu 26/1107:00 -
1 stop16h 10m
Deal found 24/8£546
Sat 5/912:40 -
1 stop14h 18m
Tue 15/912:37 -
1 stop13h 08m
Deal found 24/8£550
Thu 8/1012:40 -
1 stop16h 31m
Thu 15/1014:22 -
2 stops34h 43m
Deal found 24/8£558
Thu 8/1011:45 -
2 stops19h 08m
Thu 15/1007:00 -
2 stops15h 30m
Deal found 24/8£560
Wed 11/1113:00 -
1 stop18h 43m
Thu 19/1106:00 -
1 stop17h 15m
Deal found 27/8£587
Wed 11/1110:40 -
1 stop16h 07m
Thu 19/1106:00 -
2 stops19h 55m
Deal found 27/8£607
Tue 3/1110:40 -
1 stop16h 07m
Tue 24/1107:00 -
1 stop17h 10m
Deal found 24/8£607
Mon 12/1005:55 -
2 stops26h 00m
Mon 19/1009:45 -
2 stops24h 40m
Deal found 28/8£643
Wed 2/909:20 -
2 stops18h 41m
Fri 18/905:00 -
2 stops18h 30m
Deal found 25/8£651

Find flight deals from Dublin to Ontario

Round-trip from

£475

Popular in

July

Cheapest in

January

Average price

£677
British Airways
  • British Airways
  • 21/1-25/1
  • 4 total stops
  • 40h 50m total
  • Dublin to Ontario
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£88 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 August 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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Cheapest return flight

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Thu 5/11

08:50-23:46

2 stops22h 56m

Ontario

Thu 26/11

09:20-17:35

2 stops24h 15m

£539

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Wed 4/11

10:30-23:46

2 stops21h 16m

Ontario

Thu 26/11

09:20-17:35

2 stops24h 15m

£539

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Wed 4/11

18:30-09:40

2 stops23h 10m

Ontario

Wed 25/11

06:00-07:15

1 stop17h 15m

£542

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Thu 21/1

09:00-20:26

2 stops19h 26m

Ontario

Mon 25/1

07:00-08:10

1 stop17h 10m

£602

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Wed 11/11

09:30-18:47

2 stops17h 17m

Ontario

Thu 19/11

06:00-09:55

2 stops19h 55m

£607
Fastest return journey

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Tue 3/11

10:40-18:47

1 stop16h 07m

Ontario

Tue 24/11

07:00-08:10

1 stop17h 10m

£607

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Thu 14/1

10:40-18:44

1 stop16h 04m

Ontario

Sun 17/1

06:45-08:10

1 stop17h 25m

£628

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Fri 11/9

09:20-22:59

3 stops21h 39m

Ontario

Tue 15/9

07:00-07:20

2 stops16h 20m

£651

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Tue 19/1

11:30-22:41

2 stops19h 11m

Ontario

Wed 3/3

10:03-10:15

2 stops16h 12m

£674

DublinOntario

DUB Dublin - ONT Ontario

DUBONT

Dublin

Thu 22/10

14:15-23:42

2 stops17h 27m

Ontario

Wed 4/11

10:05-10:15

2 stops16h 10m

£860

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 23 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 £602, British Airways can have you in Ontario from Dublin in 19h 26m. 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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