Montreal Pierre Elliott Trudeau Intl
Dublin
1 stop
23h 30mAir Transat
Toronto Pearson Intl
Dublin
2 stops
34h 25mMultiple Airlines
Toronto Pearson Intl
Dublin
Nonstop
6h 45mAer Lingus
Toronto Pearson Intl
Dublin
2 stops
34h 25mMultiple Airlines
Toronto Pearson Intl
Dublin
2 stops
34h 25mMultiple Airlines
Toronto Pearson Intl
Dublin
2 stops
18h 00mAustrian Airlines
Toronto Pearson Intl
Dublin
1 stop
9h 50mDublin
Toronto Pearson Intl
1 stop
12h 05mIcelandair
Toronto Pearson Intl
Dublin
1 stop
9h 05mDublin
Toronto Pearson Intl
2 stops
15h 05mMultiple Airlines
Toronto Pearson Intl
Dublin
Nonstop
6h 35mDublin
Toronto Pearson Intl
Nonstop
7h 35mAir Transat
Toronto Pearson Intl
Dublin
1 stop
13h 00mDublin
Toronto Pearson Intl
2 stops
25h 00mScandinavian Airlines
Toronto Pearson Intl
Dublin
1 stop
17h 40mDublin
Toronto Pearson Intl
2 stops
24h 20mAir France
Calgary
Dublin
Nonstop
7h 55mDublin
Calgary
Nonstop
8h 21mWestJet
January
C$ 1,529
February
C$ 1,016
March
C$ 1,631
April
C$ 1,793
May
C$ 1,362
June
C$ 1,599
July
C$ 1,809
August
C$ 1,508
September
C$ 1,601
October
C$ 1,542
November
C$ 1,345
December
C$ 969
At the present moment the cheapest month to fly business class to Ireland is currently December; with July being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.