Find Cheap Flights from Dublin to Ontario (DUB - ONT)

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Sat 11/18
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When looking for a cheap flight, consider that 25% of our users selected a flight on this route for $596 or less.

FAQs for Booking Dublin to Ontario Flights

How long does a flight from Dublin to Ontario take?
An average nonstop flight takes 18h 56m, covering a distance of 5137 miles.
Which airlines provide the cheapest flights from Dublin to Ontario?
In the past 3 days, the cheapest round-trip tickets were found on British Airways ($571)
Do I need a passport to fly between Dublin and Ontario?
Yes.
What’s the cheapest day of the week to fly Dublin to Ontario?
For Dublin to Ontario, Tuesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Ontario back to Dublin, the best deals are generally found on Friday, with Saturday being the most expensive.

Book cheap flights from Dublin to Ontario (round-trip)

Airports
Origin
Dublin
$571
only
$571
Destination
Ontario
$571
only
$571
Tue, Jan 16
DUB
ONT
18h 56m
Wed, Jan 24
ONT
DUB
16h 25m
Trip: 9 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13331 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
DEN
LHR
Good 6.3

food was good

IFE was not good the equipment is very old and selection is limited

CPT
LHR
Good 6.6

Your staff were truly excellent, helpful and engaging.

My TV worked only intermittently and I therefore could not relax and enjoy the entertainment...

LHR
DEN
Excellent 8.0

I liked the fact that the customer service on board was pretty spectacular & very clean bathrooms.

It was extremely warm throughout the flight and the seats weren’t too comfortable.

VIE
LHR
Excellent 8.0

punctuality

trapped on this plane for over 3 hours and they can't even spring for a lousy soda and bag of crisps.

LAS
LHR
Excellent 8.0

The flight was great. Business class is the way to go if it’s in your budget. However, the British Airways photos of business class does not quite reflect reality. It’s just a regular seat with more leg room.

Wed, Mar 28
DUB
ONT
19h 08m
Wed, Apr 4
ONT
DUB
20h 00m
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13331 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LAS
LHR
Excellent 8.0

The flight was great. Business class is the way to go if it’s in your budget. However, the British Airways photos of business class does not quite reflect reality. It’s just a regular seat with more leg room.

CPT
LHR
Good 6.6

Your staff were truly excellent, helpful and engaging.

My TV worked only intermittently and I therefore could not relax and enjoy the entertainment...

LHR
HYD
Excellent 8.0

The food on the flight was good.

The wheelchair assistance was very bad as no one turned up with a wheelchair. The airways really need to improve their service and make sure that whey they offering wheelchair assistance they in fact do it. This has happened serveral times that no one turned up at the London airport.

LHR
DEN
Excellent 8.0

I liked the fact that the customer service on board was pretty spectacular & very clean bathrooms.

It was extremely warm throughout the flight and the seats weren’t too comfortable.

ORD
LHR
Good 6.6

Excellent vegan meal selection!

No Wifi, average movie selection, cramped space, 2+ hour delay (half of which was spent sitting on plane).

Sun, Feb 11
DUB
ONT
19h 36m
Thu, Feb 22
ONT
DUB
19h 05m
Trip: 12 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13331 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
CPT
LHR
Good 6.6

Your staff were truly excellent, helpful and engaging.

My TV worked only intermittently and I therefore could not relax and enjoy the entertainment...

LHR
DEN
Excellent 8.0

I liked the fact that the customer service on board was pretty spectacular & very clean bathrooms.

It was extremely warm throughout the flight and the seats weren’t too comfortable.

LHR
DEN
Excellent 10.0

Everything

VIE
LHR
Excellent 8.0

punctuality

trapped on this plane for over 3 hours and they can't even spring for a lousy soda and bag of crisps.

LAS
LHR
Excellent 8.0

The flight was great. Business class is the way to go if it’s in your budget. However, the British Airways photos of business class does not quite reflect reality. It’s just a regular seat with more leg room.

Wed, Apr 11
DUB
ONT
19h 08m
Tue, Apr 17
ONT
DUB
17h 23m
Trip: 7 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13331 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
ORD
LHR
Good 6.6

Excellent vegan meal selection!

No Wifi, average movie selection, cramped space, 2+ hour delay (half of which was spent sitting on plane).

LHR
DEN
Excellent 10.0

Everything

CPT
LHR
Good 6.6

Your staff were truly excellent, helpful and engaging.

My TV worked only intermittently and I therefore could not relax and enjoy the entertainment...

LHR
HYD
Excellent 8.0

The food on the flight was good.

The wheelchair assistance was very bad as no one turned up with a wheelchair. The airways really need to improve their service and make sure that whey they offering wheelchair assistance they in fact do it. This has happened serveral times that no one turned up at the London airport.

LHR
DEN
Excellent 10.0

plane was not full so plenty of room to move around etc

Wed, Nov 29
DUB
ONT
21h 34m
Mon, Dec 4
ONT
DUB
18h 15m
Trip: 6 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13331 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
DEN
LHR
Good 6.3

food was good

IFE was not good the equipment is very old and selection is limited

LHR
BUD
Mediocre 2.6

Only card why?? No free food??

LHR
HYD
Excellent 8.0

The food on the flight was good.

The wheelchair assistance was very bad as no one turned up with a wheelchair. The airways really need to improve their service and make sure that whey they offering wheelchair assistance they in fact do it. This has happened serveral times that no one turned up at the London airport.

VIE
LHR
Excellent 8.0

punctuality

trapped on this plane for over 3 hours and they can't even spring for a lousy soda and bag of crisps.

LHR
DEN
Excellent 8.0

I liked the fact that the customer service on board was pretty spectacular & very clean bathrooms.

It was extremely warm throughout the flight and the seats weren’t too comfortable.

Sat, Dec 16
DUB
ONT
30h 35m
Sat, Jan 6
ONT
DUB
37h 36m
Trip: 22 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13331 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
DEN
Excellent 10.0

Everything

LAS
LHR
Excellent 8.0

The flight was great. Business class is the way to go if it’s in your budget. However, the British Airways photos of business class does not quite reflect reality. It’s just a regular seat with more leg room.

DEN
LHR
Good 6.3

food was good

IFE was not good the equipment is very old and selection is limited

LHR
DEN
Excellent 8.0

I liked the fact that the customer service on board was pretty spectacular & very clean bathrooms.

It was extremely warm throughout the flight and the seats weren’t too comfortable.

VIE
LHR
Excellent 8.0

punctuality

trapped on this plane for over 3 hours and they can't even spring for a lousy soda and bag of crisps.

*
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.