Earn point on your loyalty program!arrow arc left

Cheap flights from Ontario (ONT) to Shannon (SNN)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Ontario (ONT) to Shannon (SNN)

How to find the cheapest flight from Ontario (ONT) to Shannon (SNN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to Shannon (SNN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to Shannon (SNN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Ontario to Shannon in November , December 2026

26 Nov - 06 Dec $ 1,205.00
ONT
Ontario
Alaska Airlines
3 STOPS
SNN
Shannon
SNN
Shannon
Alaska Airlines
2 STOPS
ONT
Ontario
Pick dates
24 Nov - 06 Dec $ 1,331.00
ONT
Ontario
Alaska Airlines
3 STOPS
SNN
Shannon
SNN
Shannon
Alaska Airlines
2 STOPS
ONT
Ontario
Pick dates
24 Nov - 07 Dec $ 1,335.00
ONT
Ontario
Alaska Airlines
3 STOPS
SNN
Shannon
SNN
Shannon
Alaska Airlines
2 STOPS
ONT
Ontario
Pick dates

Last minute flights from Ontario to Shannon

26 Nov - 02 Dec $ 1,223.00
ONT
Ontario
Frontier Airlines
3 STOPS
SNN
Shannon
SNN
Shannon
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates
24 Nov - 02 Dec $ 1,348.00
ONT
Ontario
Frontier Airlines
3 STOPS
SNN
Shannon
SNN
Shannon
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates
24 Nov - 02 Dec $ 1,349.00
ONT
Ontario
Frontier Airlines
3 STOPS
SNN
Shannon
SNN
Shannon
Frontier Airlines
3 STOPS
ONT
Ontario
Pick dates

One-way flights to Shannon from Ontario

2:01 PM - 10:00 AM
Aer Lingus
3 Stops
37h 29m
ONT - SNN
$ 486
Kiwi
Pick dates
9:25 AM - 6:05 PM
Aer Lingus
3 Stops
26h
ONT - SNN
$ 610
Kiwi
Pick dates
9:25 AM - 3:15 PM
Aer Lingus
3 Stops
23h 20m
ONT - SNN
$ 612
Kiwi
Pick dates

How to find the cheapest flight from Ontario (ONT) to Shannon (SNN)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to Shannon (SNN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to Shannon (SNN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.