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

Cheapflights users have booked flights from Ontario to Dublin round-trip from $691. Other airlines that can offer you cheap pricing are American Airlines, from $695, and United Airlines, from $769. Users have found that Iberia is 10% cheaper than the other options available to this destination.

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

One-way options have recently been found by users for as low as $453 on Iberia. Other airlines that offer cheap prices include American Airlines from $470 and KLM from $493 one-way.

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

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

What are the most popular airlines that fly from Ontario to Dublin?

American Airlines, Delta and Iberia are the most popular airlines when flying from Ontario to Dublin.

What is the cheapest day to fly round-trip from Ontario to Dublin?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 27% on your flight compared to booking on days when demand is much higher.

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

To save up to 32% on this flight, we recommend booking at least 21 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Ontario to Dublin from $728 1-2 weeks out and tickets from $918 for flights departing within the next 72 hours.

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

Flights from Ontario to Dublin lean towards being more expensive in June. Prices are generally better when you fly from Ontario to Dublin in January, with the cheapest ticket starting at $409.

Most accurate provider : When it comes to deals on Ontario-Dublin flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Dublin flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Ontario-Dublin flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-Dublin flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Dublin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Ontario to Dublin?

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

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

Yes. Cheapflights offers flight deals from Ontario to Dublin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$380+ Flights from Ontario to Dublin

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Find cheap flights from Ontario to Dublin with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheap flight deals from Ontario to Dublin

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$675 (Air Canada)
One-way from	$380 (Kiwi.com)
Popular in	July
Cheapest in	November
Average price	$851

Provider with most accurate pricing for Ontario-Dublin flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-Dublin flights.

Search Deals

From Ontario to Dublin

Search Deals

One-way flight from Ontario to Dublin

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($167 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 2025

Search Deals

Find flight deals from Ontario to Dublin

Cheapest flights from Ontario to Dublin
Explore the most affordable flight options available from Ontario to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mayo 1, 2025.

mié. 10/2910:55 amONT - DUB

1 stop13h 20mIberia

jue. 11/62:05 pmDUB - ONT

1 stop15h 55mIberia

Deal found 4/30

$612

mié. 10/2910:55 amONT - DUB

1 stop13h 20mAmerican Airlines

jue. 11/611:30 amDUB - ONT

2 stops18h 11mAmerican Airlines

Deal found 4/30

$616

mié. 10/2910:33 amONT - DUB

2 stops13h 42mMultiple Airlines

jue. 11/611:30 amDUB - ONT

2 stops18h 11mMultiple Airlines

Deal found 4/30

$656

lun. 9/15:10 amONT - DUB

2 stops18h 35mUnited Airlines

jue. 9/119:20 amDUB - ONT

2 stops19h 13mUnited Airlines

Deal found 4/28

$769

dom. 7/2011:40 amONT - DUB

1 stop13h 05mDelta

mié. 7/3011:00 amDUB - ONT

1 stop16h 20mDelta

Deal found 4/29

$781

lun. 7/146:10 amONT - DUB

2 stops17h 35mAir Canada

mar. 7/299:20 amDUB - ONT

2 stops40h 23mAir Canada

Deal found 4/28

$832

lun. 5/2610:59 pmONT - DUB

1 stop25h 21mJetBlue

mar. 6/1011:30 amDUB - ONT

1 stop17h 40mJetBlue

Deal found 4/29

$833

jue. 10/1612:00 pmONT - DUB

1 stop12h 45mKLM

dom. 10/1911:00 amDUB - ONT

1 stop16h 42mKLM

Deal found 4/29

$964

Best flights from Ontario to Dublin
Discover carefully curated flight deals from Ontario to Dublin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated mayo 1, 2025.

lun. 8/187:00 amONT - DUB

2 stops16h 45mMultiple Airlines

lun. 8/259:20 amDUB - ONT

3 stops35h 12mMultiple Airlines

Deal found 4/30

$675

lun. 8/2510:51 amONT - DUB

1 stop14h 54mIberia

vie. 9/1212:40 pmDUB - ONT

1 stop18h 56mIberia

Deal found 4/29

$691

lun. 8/2512:47 pmONT - DUB

1 stop12h 58mAmerican Airlines

vie. 9/1211:45 amDUB - ONT

2 stops17h 55mAmerican Airlines

Deal found 4/29

$695

lun. 9/15:10 amONT - DUB

2 stops18h 35mUnited Airlines

jue. 9/119:20 amDUB - ONT

2 stops19h 13mUnited Airlines

Deal found 4/28

$769

dom. 7/2011:40 amONT - DUB

1 stop13h 05mDelta

mié. 7/3011:00 amDUB - ONT

1 stop16h 20mDelta

Deal found 4/29

$781

lun. 7/146:10 amONT - DUB

2 stops17h 35mAir Canada

mar. 7/299:20 amDUB - ONT

2 stops40h 23mAir Canada

Deal found 4/28

$832

lun. 5/2610:59 pmONT - DUB

1 stop25h 21mJetBlue

mar. 6/1011:30 amDUB - ONT

1 stop17h 40mJetBlue

Deal found 4/29

$833

jue. 10/1612:00 pmONT - DUB

1 stop12h 45mKLM

dom. 10/1911:00 amDUB - ONT

1 stop16h 42mKLM

Deal found 4/29

$964

Last-minute flights from Ontario to Dublin
Discover last-minute flight deals from Ontario to Dublin. Data last updated mayo 1, 2025 and is based on user searches.

sáb. 5/36:00 amONT - DUB

2 stops17h 45mAir Canada

mié. 5/79:20 amDUB - ONT

2 stops37h 05mAir Canada

Deal found 4/29

$984

lun. 5/57:00 amONT - DUB

1 stop17h 45mKLM

mié. 5/711:00 amDUB - ONT

1 stop19h 29mKLM

Deal found 4/29

$1,297

mié. 5/712:45 pmONT - DUB

2 stops17h 50mMultiple Airlines

mar. 5/1312:40 pmDUB - ONT

1 stop19h 03mMultiple Airlines

Deal found 4/30

$986

mié. 5/77:30 amONT - DUB

1 stop18h 15mIberia

mar. 5/1312:40 pmDUB - ONT

1 stop19h 03mIberia

Deal found 4/30

$987

mié. 5/76:00 amONT - DUB

2 stops18h 15mAir Canada

dom. 5/189:20 amDUB - ONT

2 stops19h 14mAir Canada

Deal found 4/28

$1,067

sáb. 5/1012:41 pmONT - DUB

1 stop13h 04mAmerican Airlines

dom. 6/112:40 pmDUB - ONT

1 stop13h 56mAmerican Airlines

Deal found 4/30

$1,234

sáb. 5/106:08 amONT - DUB

2 stops17h 02mUnited Airlines

dom. 6/111:35 amDUB - ONT

2 stops19h 10mUnited Airlines

Deal found 4/30

$1,478

lun. 5/1211:46 amONT - DUB

2 stops15h 19mMultiple Airlines

mié. 5/2812:15 pmDUB - ONT

2 stops18h 31mMultiple Airlines

Deal found 4/29

$957

mar. 5/136:08 amONT - DUB

2 stops17h 02mUnited Airlines

mar. 5/2011:35 amDUB - ONT

2 stops16h 59mUnited Airlines

Deal found 4/29

$785

mar. 5/137:05 amONT - DUB

1 stop17h 40mKLM

mar. 5/2011:00 amDUB - ONT

1 stop19h 29mKLM

Deal found 4/29

$981

lun. 5/1912:45 pmONT - DUB

1 stop13h 00mIberia

mar. 6/312:40 pmDUB - ONT

1 stop19h 03mIberia

Deal found 4/30

$809

lun. 5/1912:45 pmONT - DUB

1 stop13h 00mAmerican Airlines

mié. 6/412:40 pmDUB - ONT

1 stop13h 56mAmerican Airlines

Deal found 4/29

$908

One-way flights from Ontario to Dublin
Search for one-way flight options from Ontario to Dublin. Find affordable one-way fares based on user searches. Data last updated mayo 1, 2025.

lun. 7/147:36 pmONT - DUB

3 stops44h 54mMultiple Airlines

Deal found 4/28

$380

lun. 7/2812:46 pmONT - DUB

1 stop12h 59mIberia

Deal found 4/29

$453

mar. 5/1312:45 pmONT - DUB

1 stop13h 00mAmerican Airlines

Deal found 4/29

$470

mar. 5/137:05 amONT - DUB

1 stop17h 40mKLM

Deal found 4/29

$493

vie. 9/55:10 amONT - DUB

2 stops18h 35mUnited Airlines

Deal found 4/30

$523

mar. 9/22:59 pmONT - DUB

2 stops16h 46mBritish Airways

Deal found 4/30

$543

mié. 5/1410:59 pmONT - DUB

1 stop25h 21mJetBlue

Deal found 4/30

$570

lun. 7/146:39 pmONT - DUB

2 stops29h 06mAir Canada

Deal found 4/28

$622

vie. 5/161:10 pmONT - DUB

2 stops15h 25mDelta

Deal found 4/29

$712

lun. 6/236:25 amONT - DUB

2 stops44h 25mWestJet

Deal found 4/29

$2,398

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

OntarioDublin

ONT - DUB

ONTDUB

Ontario

lun. 8/18

7:00 am-7:45 am

2 stops16h 45m

Dublin

lun. 8/25

9:20 am-12:32 pm

3 stops35h 12m

$675

OntarioDublin

ONT - DUB

ONTDUB

Ontario

lun. 8/25

10:51 am-9:45 am

1 stop14h 54m

Dublin

vie. 9/12

12:40 pm-11:36 pm

1 stop18h 56m

$691

OntarioDublin

ONT - DUB

ONTDUB

Ontario

lun. 8/25

6:17 am-5:30 am

2 stops15h 13m

Dublin

vie. 9/12

9:30 am-5:51 pm

2 stops16h 21m

$695

OntarioDublin

ONT - DUB

ONTDUB

Ontario

lun. 9/1

5:10 am-7:45 am

2 stops18h 35m

Dublin

jue. 9/11

9:20 am-8:33 pm

2 stops19h 13m

$769

OntarioDublin

ONT - DUB

ONTDUB

Ontario

dom. 7/20

11:40 am-8:45 am

1 stop13h 05m

Dublin

mié. 7/30

11:00 am-7:20 pm

1 stop16h 20m

$781

OntarioDublin

ONT - DUB

ONTDUB

Ontario

lun. 7/14

6:10 am-7:45 am

2 stops17h 35m

Dublin

mar. 7/29

9:20 am-5:43 pm

2 stops40h 23m

$832

OntarioDublin

ONT - DUB

ONTDUB

Ontario

lun. 5/26

10:59 pm-8:20 am

1 stop25h 21m

Dublin

mar. 6/10

11:30 am-9:10 pm

1 stop17h 40m

$833

OntarioDublin

ONT - DUB

ONTDUB

Ontario

jue. 10/16

12:00 pm-8:45 am

1 stop12h 45m

Dublin

dom. 10/19

11:00 am-7:42 pm

1 stop16h 42m

$964

OntarioDublin

ONT - DUB

ONTDUB

Ontario

lun. 7/14

7:36 pm-12:30 am

3 stops44h 54m

$380

OntarioDublin

ONT - DUB

ONTDUB

Ontario

lun. 7/28

12:46 pm-9:45 am

1 stop12h 59m

$453

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 18 results

Compare providers for flights from Ontario to Dublin

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Dublin in May.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Justfly.com	Price Accuracy3 stars	Trust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Ontario-Dublin flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Dublin flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Ontario-Dublin flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-Dublin flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Dublin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Dublin

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

Estimated round-trip 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 Ontario to Dublin

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

Currently, November is the cheapest month in which you can book a flight from Ontario to Dublin (average of $509). Flying from Ontario to Dublin in June is currently the most expensive (average of $981). 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.

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

One of the essential ways to save on airfare from Ontario to Dublin is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 6% on airfare.

Rainfall in Dublin by month

In terms of precipitation, rainfall in Dublin ranges from 1.9 - 3.1 inches per month. October is typically the wettest month, when rainfall can reach 3.1 in. February is typically the driest time to visit Dublin when rainfall is around 1.9 in.

Temperature in Dublin by month

If weather is an important factor for your trip to Dublin, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Dublin

See what other customers who have flown with Delta, KLM and United Airlines from Ontario to Dublin have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,934 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

JetBlue

7.3

Good

2,922 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from Ontario to Dublin round-trip?
Cheapflights users have booked flights from Ontario to Dublin round-trip from $691. Other airlines that can offer you cheap pricing are American Airlines, from $695, and United Airlines, from $769. Users have found that Iberia is 10% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Ontario to Dublin one-way?
One-way options have recently been found by users for as low as $453 on Iberia. Other airlines that offer cheap prices include American Airlines from $470 and KLM from $493 one-way.
Can I find deals for flights from Ontario to Dublin that include hotel bookings?
Yes. In addition to deals on Ontario to Dublin flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Dublin?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Dublin.
Can I find deals for business class flights from Ontario to Dublin?
Yes. Cheapflights offers flight deals from Ontario to Dublin 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 Ontario to Dublin?
Currently, November is the cheapest month in which you can book a flight from Ontario to Dublin (average of $509). Flying from Ontario to Dublin in June is currently the most expensive (average of $981). 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

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Other flights to Dublin

Top 5 airlines flying from Ontario to Dublin

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$507	Average$572	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$557	Average$922	FlexibilityNo cancel fee	On-time71%
Iberia	Cheapest$580	Average$808	FlexibilityNo cancel fee	On-time77%
KLM	Cheapest$607	Average$893	FlexibilityNo cancel fee	On-time75%
Delta	Cheapest$677	Average$861	FlexibilityNo cancel fee	On-timeN/A

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$380+ Cheap flights from Ontario (ONT) to Dublin (DUB)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Dublin with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Dublin

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Dublin

Cheapest flights from Ontario to DublinExplore the most affordable flight options available from Ontario to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mayo 1, 2025.

Explore the most affordable flight options available from Ontario to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mayo 1, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Ontario to Dublin

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Dublin in May.

Best time to book a flight from Ontario to Dublin

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

Cheapflights Insights

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

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

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

Find hourly flight availability from Ontario to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated mayo 1, 2025.

Rainfall in Dublin by month

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

Temperature in Dublin by month

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

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dublin. Reviews last updated mayo 1, 2025.

See what other customers who have flown with Delta, KLM and United Airlines from Ontario to Dublin have to say. Users can see the overall rating for each airline as well as how each is rated 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 Ontario to Dublin. 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 Ontario to Dublin round-trip?

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

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

How can I find direct flights from Ontario to Dublin?

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

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

Traveling to a place near Ontario?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Dublin

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Ontario to Dublin

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Cheapest flights from Ontario to Dublin
Explore the most affordable flight options available from Ontario to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on mayo 1, 2025.