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$647+ Cheap flights from Ontario (ONT) to Galway, Ireland

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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SNN
Dec 19 — Dec 261
Fri 12/19
Fri 12/26
1 adult, Economy
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Cheap flight deals from Ontario to Galway

Keep the following information in mind while searching for Ontario to Galway flight deals. Data was last updated November 19, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$673
(American Airlines)

One-way from

$647
(Cheapflightsfares)

Popular in

December

Cheapest in

March

Average price

$894
Provider with most accurate pricing for Los Angeles-Shannon flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Shannon flights.
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From Ontario to Galway
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One-way flight from Ontario to Galway
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Highest demand for flights based on searches. 23% potential increase in price ($272 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($78 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Ontario to Galway

Cheapest flights from Ontario to Galway
Explore the most affordable flight options available from Ontario to Galway. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 19, 2025.

This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/112:49 pmONT - SNN
2 stops19h 56mAmerican Airlines
Tue 12/97:50 amSNN - ONT
2 stops34h 04mAmerican Airlines
Deal found 11/19$934
This British Airways deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/112:49 pmONT - SNN
2 stops22h 36mBritish Airways
Mon 12/85:30 pmSNN - ONT
2 stops36h 58mBritish Airways
Deal found 11/19$936
This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/112:49 pmONT - SNN
2 stops19h 56mAmerican Airlines
Fri 12/122:45 pmSNN - ONT
2 stops55h 14mAmerican Airlines
Deal found 11/19$951
This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/112:49 pmONT - SNN
2 stops19h 56mAmerican Airlines
Sun 12/77:50 amSNN - ONT
2 stops46h 38mAmerican Airlines
Deal found 11/19$952
This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/112:49 pmONT - SNN
2 stops19h 56mAmerican Airlines
Sat 12/132:00 pmSNN - ONT
2 stops34h 02mAmerican Airlines
Deal found 11/19$969
This British Airways deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2210:47 amONT - SNN
2 stops16h 43mBritish Airways
Sat 11/297:50 amSNN - ONT
2 stops19h 38mBritish Airways
Deal found 11/18$2,167

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Galway that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 19, 2025.
Use the filters below to find and compare flights from Ontario to Galway that are best for you.

Fly from

Ontario

Fly to

Galway

Route

Depart

Return

Price

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 3/26

5:02 pm-4:45 pm

2 stops16h 43m

Shannon

Mon 3/30

9:15 pm-5:49 pm

2 stops28h 34m

$865

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Mon 12/1

12:49 pm-4:45 pm

2 stops19h 56m

Shannon

Thu 12/11

7:50 am-10:19 pm

2 stops22h 29m

$934

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Mon 12/1

12:49 pm-4:45 pm

2 stops19h 56m

Shannon

Wed 12/10

7:50 am-10:19 pm

2 stops46h 29m

$934

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Mon 12/1

12:49 pm-4:45 pm

2 stops19h 56m

Shannon

Tue 12/9

7:50 am-9:54 am

2 stops34h 04m

$934

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Mon 12/1

12:49 pm-7:25 pm

2 stops22h 36m

Shannon

Mon 12/8

5:30 pm-10:28 pm

2 stops36h 58m

$936

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Mon 12/1

12:49 pm-4:45 pm

2 stops19h 56m

Shannon

Sun 12/7

7:50 am-10:28 pm

2 stops46h 38m

$952

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Mon 12/1

12:49 pm-4:45 pm

2 stops19h 56m

Shannon

Sat 12/13

2:00 pm-4:02 pm

2 stops34h 02m

$969

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Wed 5/6

11:01 am-11:20 am

2 stops16h 19m

Shannon

Thu 5/7

9:15 pm-5:45 pm

2 stops28h 30m

$1,047

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Mon 3/23

5:02 pm-4:45 pm

2 stops16h 43m

$647

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/17

Best time to book a flight from Ontario to Galway

Have a flexible travel schedule? Discover the best time to fly to Galway 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 Galway

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

Currently, August is the cheapest month in which you can book a flight from Ontario to Galway (average of $510). Flying from Ontario to Galway in December is currently the most expensive (average of $988). 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.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Galway. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Galway?

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Galway from Ontario. Booking flights from Ontario (ONT) to Galway should be relatively easy as there are 0 daily outbound flights to Galway from 0 different airlines.

  • How long is the flight from Ontario to Galway?

    A quick flight from Ontario to Galway can take about 16h 43m. American Airlines provides one of the quickest options available for as low as $865. Ontario and Galway are separated by a distance of 5072 mi.

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

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

  • How can I find direct flights from Ontario to Galway?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Galway 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 Galway?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Galway (average of $510). Flying from Ontario to Galway in December is currently the most expensive (average of $988). 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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