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 May , June 2026

30 May - 07 Jun $ 1,160.00
ONT
Ontario
United Airlines
1 STOPS
SNN
Shannon
SNN
Shannon
United Airlines
2 STOPS
ONT
Ontario
Pick dates
30 May - 06 Jun $ 1,160.00
ONT
Ontario
United Airlines
1 STOPS
SNN
Shannon
SNN
Shannon
United Airlines
2 STOPS
ONT
Ontario
Pick dates
31 May - 09 Jun $ 1,287.00
ONT
Ontario
United Airlines
1 STOPS
SNN
Shannon
SNN
Shannon
United Airlines
2 STOPS
ONT
Ontario
Pick dates

Last minute flights from Ontario to Shannon

28 May - 31 May $ 1,700.00
ONT
Ontario
Alaska Airlines
2 STOPS
SNN
Shannon
SNN
Shannon
Alaska Airlines
2 STOPS
ONT
Ontario
Pick dates
27 May - 31 May $ 1,702.00
ONT
Ontario
Alaska Airlines
2 STOPS
SNN
Shannon
SNN
Shannon
Alaska Airlines
2 STOPS
ONT
Ontario
Pick dates
26 May - 31 May $ 1,711.00
ONT
Ontario
Alaska Airlines
2 STOPS
SNN
Shannon
SNN
Shannon
Alaska Airlines
2 STOPS
ONT
Ontario
Pick dates

One-way flights to Shannon from Ontario

6:30 AM - 6:05 PM
United Airlines
1 Stops
17h
ONT - SNN
$ 717
Kiwi
Pick dates
6:30 AM - 6:05 PM
United Airlines
1 Stops
17h
ONT - SNN
$ 829
Kiwi
Pick dates
6:30 AM - 6:05 PM
United Airlines
1 Stops
17h
ONT - SNN
$ 839
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.