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

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Looking for a cheap flight? 25% of our users found flights on this route for $791 or less.

FAQs for Booking Ontario to Dublin Flights

How long does a flight from Ontario to Dublin take?
An average nonstop flight takes 17h 50m, covering a distance of 5137 miles.
Which airlines provide the cheapest flights from Ontario to Dublin?
In the past 3 days, the cheapest round-trip tickets were found on British Airways ($662), Multiple Airlines ($662) and United ($979).
Do I need a passport to fly between Ontario and Dublin?
Yes.
What’s the cheapest day of the week to fly Ontario to Dublin?
For Ontario to Dublin, Wednesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Dublin back to Ontario, the best deals are generally found on Wednesday, with Saturday being the most expensive.

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

Airports
Origin
Ontario
$662
only
$662
Destination
Dublin
$662
only
$662
Wed, Apr 11
ONT
DUB
17h 50m
Wed, Apr 18
DUB
ONT
18h 56m
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
IAH
LHR
Excellent 8.0

Crew on the flight home was extremely friendly! Flights were all on time. Food service and drinks were very good. Great in flight entertainment options

Customer service personnel over the phone was so rude to me. Flight crew on the flight from dfw to lhr wasn’t friendly at all.

LHR
BIO
Mediocre 3.0

Arrived safely, only a little late.

Duty free? Marks and Spencer? The cart and crew kept going by but never offered drinks. So thirsty!

ZRH
LHR
Excellent 10.0

Flight was onetime, food on the flight was for purchase but it was vert nice, boarding was onetime and smooth.

LHR
LYS
Mediocre 3.3

Safe landing

Was charged 65 pounds for checking one bag. This was a big news to me. BA claims it was because I booked through Kayak. Would not have booked the flight. Luggage cost is almost superior to flight cost. Forced me to check my overhead luggage. Flight was delayed one hour because we had to go back to gate to rebLANCE WEIGHT

FAO
LGW
Mediocre 3.6

nice employees

for the second time on this flight, the onboard devise for credit cards would not accept mine. this is the same card i used to book the flight. i complained to british air last time but they obviously haven't fixed the problem. there seems to be a problem using american credit cards these flights. is is a problem because nothing is free. luck;y a flight attendant did feel bad about it and gave me a glass of water

Fri, Apr 20
ONT
DUB
18h 25m
Sat, Apr 28
DUB
ONT
20h 52m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Mar 8
ONT
DUB
33h 25m
Sun, Mar 11
DUB
ONT
21h 42m
Trip: 4 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54764 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PWM
IAD
Mediocre 2.0

Nothing was good about this airline with the exception of the baggage crew that finally helped me in Washington Ronald Regan Airport

My flight out of Portland was canceled and it took hours to rebook. I had to fly American Airline to Washington DCA where I roamed the airport at 9pm looking for someone from United. The crew in Portland ME told me the gate person would have a hotel for me.... The baggage crew had to help me.

EWR
TPA
Excellent 8.0

Made up time for delayed departure

So cramped. Sat next to very obese person....spilled onto my seat

MUC
IAD
Excellent 9.6

Flexibility in changing reservation at the last minute. Excellent service on board, good food.

IAD
PHX
Mediocre 2.0

I never flew to Phoenix from Washington. I was held over at DCA for the night so I lost a full day of my vacation! Had to fly to Chicago and then to Phoenix. Was a total pain!!!

EWR
SYR
Mediocre 2.0

Nothing

Taxied for 45 minutes, got on runway then determined we were low on fuel. Back to gate, refuel, two hour delay

Wed, Feb 28
ONT
DUB
19h 20m
Mon, Mar 5
DUB
ONT
19h 49m
$1079
Trip: 6 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 16166 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
JFK
MCO
Excellent 8.0

Entertainment system great. Individual choices include recent movies. On board staff very nice

We had issues with baggage. Delta was supposed to transfer 4 bags to Disney for Magic Express transportation. Only 3 went. Disney tried hard to fix problem, and even gave us something to ameliorate the situation. Delta took hard line, wasn't helpful and gave nothing. It took 2 days to find bag.

FLL
BOS
Good 6.3

Food and nice crew

No tvs and bad WiFi

ATL
PIT
Excellent 9.0

Pilots and crew did an amazing job during unstable air coming into Pittsburgh. Great job.

MSP
CZM
Excellent 10.0

Everything went smoothly.

All was good.

SLC
YYZ
Excellent 8.0

was a difficult transition from delta to west jet in Toronto and we almost missed the flight

Wed, Apr 18
ONT
DUB
17h 50m
Tue, May 1
DUB
ONT
20h 31m
Trip: 14 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
BOS
Good 7.0

Crew were cooperative

There were no veg sandwiches.

IAH
LHR
Excellent 8.0

Crew on the flight home was extremely friendly! Flights were all on time. Food service and drinks were very good. Great in flight entertainment options

Customer service personnel over the phone was so rude to me. Flight crew on the flight from dfw to lhr wasn’t friendly at all.

MAA
LHR
Okay 5.6

Seats are not comfortable. The crew are OK. No fruit juice or cool drinks.

ZRH
LHR
Excellent 10.0

Flight was onetime, food on the flight was for purchase but it was vert nice, boarding was onetime and smooth.

LHR
SEA
Excellent 8.6

The crew and the plan and the service were all top notch. However, their new policy as of 1/1/2018 in which they even charge for coffee and water seems very misplaced and excessive.

Their new policy as of 1/1/2018 in which they even charge for coffee and water on short flights (Madrid to London in this case) seems excessive, even in this day of ala carte flying. :-(

Sat, Apr 21
ONT
DUB
19h 49m
Wed, May 2
DUB
ONT
20h 31m
Trip: 12 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
PRG
LHR
Okay 4.6

The crew was sick and one lady kept running to the bathroom?!? The plane was old...

LHR
BOS
Good 7.0

Crew were cooperative

There were no veg sandwiches.

MAA
LHR
Okay 5.6

Seats are not comfortable. The crew are OK. No fruit juice or cool drinks.

LHR
BIO
Mediocre 3.0

Arrived safely, only a little late.

Duty free? Marks and Spencer? The cart and crew kept going by but never offered drinks. So thirsty!

LHR
MAD
Good 6.0

It was just ok.

Nothing was complimentary.

Thu, Apr 12
ONT
DUB
20h 00m
Tue, Apr 24
DUB
ONT
18h 56m
Trip: 13 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Apr 24
ONT
DUB
19h 49m
Tue, May 1
DUB
ONT
20h 31m
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
ZRH
LHR
Excellent 10.0

Flight was onetime, food on the flight was for purchase but it was vert nice, boarding was onetime and smooth.

LHR
BWI
Okay 4.0

Quick boarding

Service was poor, flight attendants were rude.

IAH
LHR
Excellent 8.0

Crew on the flight home was extremely friendly! Flights were all on time. Food service and drinks were very good. Great in flight entertainment options

Customer service personnel over the phone was so rude to me. Flight crew on the flight from dfw to lhr wasn’t friendly at all.

LHR
LYS
Mediocre 3.3

Safe landing

Was charged 65 pounds for checking one bag. This was a big news to me. BA claims it was because I booked through Kayak. Would not have booked the flight. Luggage cost is almost superior to flight cost. Forced me to check my overhead luggage. Flight was delayed one hour because we had to go back to gate to rebLANCE WEIGHT

FAO
LGW
Mediocre 3.6

nice employees

for the second time on this flight, the onboard devise for credit cards would not accept mine. this is the same card i used to book the flight. i complained to british air last time but they obviously haven't fixed the problem. there seems to be a problem using american credit cards these flights. is is a problem because nothing is free. luck;y a flight attendant did feel bad about it and gave me a glass of water

Wed, Apr 18
ONT
DUB
21h 47m
Wed, May 2
DUB
ONT
28h 20m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Mar 19
ONT
DUB
19h 15m
Thu, Apr 12
DUB
ONT
20h 42m
Trip: 25 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
SEA
Excellent 8.6

The crew and the plan and the service were all top notch. However, their new policy as of 1/1/2018 in which they even charge for coffee and water seems very misplaced and excessive.

Their new policy as of 1/1/2018 in which they even charge for coffee and water on short flights (Madrid to London in this case) seems excessive, even in this day of ala carte flying. :-(

LHR
MAD
Good 6.0

It was just ok.

Nothing was complimentary.

IAH
LHR
Excellent 8.0

Crew on the flight home was extremely friendly! Flights were all on time. Food service and drinks were very good. Great in flight entertainment options

Customer service personnel over the phone was so rude to me. Flight crew on the flight from dfw to lhr wasn’t friendly at all.

LHR
NBO
Good 6.0

Crew was very nice and helpful

Did not get the seat according to the seatplan.I booked exit row seat 30..got 30..but exit row was 28.

LHR
BOS
Good 7.0

Crew were cooperative

There were no veg sandwiches.

Thu, Apr 19
ONT
DUB
24h 25m
Fri, Apr 27
DUB
ONT
27h 20m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Fri, May 25
ONT
DUB
34h 55m
Fri, Jun 1
DUB
ONT
16h 12m
$1025
Trip: 8 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54764 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
LAX
ORD
Good 7.0

Crew was nice

Plane was delayed for 4 hours, should have given us miles or a voucher

LAX
NRT
Good 7.6

Staff was ind and friendly. Generous

Wish there was better food. It was okay.

IAD
MUC
Excellent 9.3

United was flexible when I had to change my reservation at the last minute. Good service on board.

IAD
PHX
Mediocre 2.0

I never flew to Phoenix from Washington. I was held over at DCA for the night so I lost a full day of my vacation! Had to fly to Chicago and then to Phoenix. Was a total pain!!!

PWM
IAD
Mediocre 2.0

Nothing was good about this airline with the exception of the baggage crew that finally helped me in Washington Ronald Regan Airport

My flight out of Portland was canceled and it took hours to rebook. I had to fly American Airline to Washington DCA where I roamed the airport at 9pm looking for someone from United. The crew in Portland ME told me the gate person would have a hotel for me.... The baggage crew had to help me.

Wed, Apr 18
ONT
DUB
19h 43m
Sun, Apr 29
DUB
ONT
20h 31m
Trip: 12 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
FAO
LGW
Mediocre 3.6

nice employees

for the second time on this flight, the onboard devise for credit cards would not accept mine. this is the same card i used to book the flight. i complained to british air last time but they obviously haven't fixed the problem. there seems to be a problem using american credit cards these flights. is is a problem because nothing is free. luck;y a flight attendant did feel bad about it and gave me a glass of water

MAA
LHR
Okay 5.6

Seats are not comfortable. The crew are OK. No fruit juice or cool drinks.

LHR
BWI
Okay 4.0

Quick boarding

Service was poor, flight attendants were rude.

LHR
NBO
Good 6.0

Crew was very nice and helpful

Did not get the seat according to the seatplan.I booked exit row seat 30..got 30..but exit row was 28.

LHR
SEA
Excellent 8.6

The crew and the plan and the service were all top notch. However, their new policy as of 1/1/2018 in which they even charge for coffee and water seems very misplaced and excessive.

Their new policy as of 1/1/2018 in which they even charge for coffee and water on short flights (Madrid to London in this case) seems excessive, even in this day of ala carte flying. :-(

Sat, Apr 7
ONT
DUB
37h 00m
Thu, Apr 12
DUB
ONT
16h 12m
$1041
Trip: 6 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54764 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
IAD
MUC
Excellent 9.3

United was flexible when I had to change my reservation at the last minute. Good service on board.

IAD
NRT
Excellent 10.0

For a little over $2000 you get an economy seat non-stop from DC to Tokyo and back. Meals were good. As economy seats go, it's comfortable. Midweek the flight is about half to two thirds full. So you might be able to stretch out even!

MUC
IAD
Excellent 9.6

Flexibility in changing reservation at the last minute. Excellent service on board, good food.

DSM
DEN
Excellent 8.0

I had to check my carry on from DEN to DSM because flight was full which I was told I could pickup at gate.. at the gate the TSA agent was very rude to me as I was confused as where my bag was, which I had to to baggage claim.

PWM
IAD
Mediocre 2.0

Nothing was good about this airline with the exception of the baggage crew that finally helped me in Washington Ronald Regan Airport

My flight out of Portland was canceled and it took hours to rebook. I had to fly American Airline to Washington DCA where I roamed the airport at 9pm looking for someone from United. The crew in Portland ME told me the gate person would have a hotel for me.... The baggage crew had to help me.

Thu, Apr 19
ONT
DUB
18h 43m
Tue, May 1
DUB
ONT
18h 56m
Trip: 13 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
LYS
Mediocre 3.3

Safe landing

Was charged 65 pounds for checking one bag. This was a big news to me. BA claims it was because I booked through Kayak. Would not have booked the flight. Luggage cost is almost superior to flight cost. Forced me to check my overhead luggage. Flight was delayed one hour because we had to go back to gate to rebLANCE WEIGHT

LHR
SEA
Excellent 8.6

The crew and the plan and the service were all top notch. However, their new policy as of 1/1/2018 in which they even charge for coffee and water seems very misplaced and excessive.

Their new policy as of 1/1/2018 in which they even charge for coffee and water on short flights (Madrid to London in this case) seems excessive, even in this day of ala carte flying. :-(

LHR
BWI
Okay 4.0

Quick boarding

Service was poor, flight attendants were rude.

FAO
LGW
Mediocre 3.6

nice employees

for the second time on this flight, the onboard devise for credit cards would not accept mine. this is the same card i used to book the flight. i complained to british air last time but they obviously haven't fixed the problem. there seems to be a problem using american credit cards these flights. is is a problem because nothing is free. luck;y a flight attendant did feel bad about it and gave me a glass of water

LHR
NBO
Good 6.0

Crew was very nice and helpful

Did not get the seat according to the seatplan.I booked exit row seat 30..got 30..but exit row was 28.

Tue, Mar 13
ONT
DUB
19h 15m
Fri, Mar 23
DUB
ONT
21h 57m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Apr 20
ONT
DUB
19h 15m
Tue, May 1
DUB
ONT
20h 31m
Trip: 12 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
BIO
Mediocre 3.0

Arrived safely, only a little late.

Duty free? Marks and Spencer? The cart and crew kept going by but never offered drinks. So thirsty!

IAH
LHR
Excellent 8.0

Crew on the flight home was extremely friendly! Flights were all on time. Food service and drinks were very good. Great in flight entertainment options

Customer service personnel over the phone was so rude to me. Flight crew on the flight from dfw to lhr wasn’t friendly at all.

LHR
BOS
Good 7.0

Crew were cooperative

There were no veg sandwiches.

LHR
NBO
Good 6.0

Crew was very nice and helpful

Did not get the seat according to the seatplan.I booked exit row seat 30..got 30..but exit row was 28.

MAA
LHR
Okay 5.6

Seats are not comfortable. The crew are OK. No fruit juice or cool drinks.

Sat, Apr 21
ONT
DUB
19h 49m
Sun, Apr 29
DUB
ONT
19h 31m
Trip: 9 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
BOS
Good 7.0

Crew were cooperative

There were no veg sandwiches.

LHR
SEA
Excellent 8.6

The crew and the plan and the service were all top notch. However, their new policy as of 1/1/2018 in which they even charge for coffee and water seems very misplaced and excessive.

Their new policy as of 1/1/2018 in which they even charge for coffee and water on short flights (Madrid to London in this case) seems excessive, even in this day of ala carte flying. :-(

LHR
BWI
Okay 4.0

Quick boarding

Service was poor, flight attendants were rude.

MAA
LHR
Okay 5.6

Seats are not comfortable. The crew are OK. No fruit juice or cool drinks.

LHR
BIO
Mediocre 3.0

Arrived safely, only a little late.

Duty free? Marks and Spencer? The cart and crew kept going by but never offered drinks. So thirsty!

Wed, Feb 28
ONT
DUB
22h 03m
Tue, Mar 6
DUB
ONT
30h 38m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Apr 22
ONT
DUB
19h 15m
Tue, May 1
DUB
ONT
20h 31m
Trip: 10 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
SEA
Excellent 8.6

The crew and the plan and the service were all top notch. However, their new policy as of 1/1/2018 in which they even charge for coffee and water seems very misplaced and excessive.

Their new policy as of 1/1/2018 in which they even charge for coffee and water on short flights (Madrid to London in this case) seems excessive, even in this day of ala carte flying. :-(

LHR
LYS
Mediocre 3.3

Safe landing

Was charged 65 pounds for checking one bag. This was a big news to me. BA claims it was because I booked through Kayak. Would not have booked the flight. Luggage cost is almost superior to flight cost. Forced me to check my overhead luggage. Flight was delayed one hour because we had to go back to gate to rebLANCE WEIGHT

IAH
LHR
Excellent 8.0

Crew on the flight home was extremely friendly! Flights were all on time. Food service and drinks were very good. Great in flight entertainment options

Customer service personnel over the phone was so rude to me. Flight crew on the flight from dfw to lhr wasn’t friendly at all.

MAA
LHR
Okay 5.6

Seats are not comfortable. The crew are OK. No fruit juice or cool drinks.

LHR
BIO
Mediocre 3.0

Arrived safely, only a little late.

Duty free? Marks and Spencer? The cart and crew kept going by but never offered drinks. So thirsty!

Ontario to Dublin Flight Information

Flights Arrive in Dublin
Flights Depart from Ontario
Flight Price $662
Distance 5137 miles
Airlines British Airways, United, Delta
*
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