Calgary
Dublin
1 stop
21h 15mAir Transat
Calgary
Dublin
Nonstop
7h 55mWestJet
Toronto Pearson Intl
Dublin
2 stops
34h 25mMultiple Airlines
Calgary
Dublin
Nonstop
7h 55mWestJet
Vancouver Intl
Dublin
1 stop
19h 25mDelta
Vancouver Intl
Dublin
Nonstop
8h 40mLufthansa
Toronto Pearson Intl
Dublin
1 stop
9h 50mDublin
Toronto Pearson Intl
1 stop
14h 40mIcelandair
Toronto Pearson Intl
Dublin
2 stops
18h 00mDublin
Toronto Pearson Intl
1 stop
14h 40mMultiple Airlines
Toronto Pearson Intl
Dublin
Nonstop
6h 35mDublin
Toronto Pearson Intl
Nonstop
7h 35mAir Transat
Toronto Pearson Intl
Dublin
1 stop
21h 25mDublin
Toronto Pearson Intl
2 stops
25h 00mScandinavian Airlines
Toronto Pearson Intl
Dublin
Nonstop
6h 40mDublin
Toronto Pearson Intl
Nonstop
7h 05mLufthansa
Ottawa
Dublin
1 stop
18h 55mDublin
Ottawa
1 stop
13h 45mAir France
January
C$ 2,009
February
C$ 1,017
March
C$ 1,059
April
C$ 1,532
May
C$ 963
June
C$ 1,566
July
C$ 1,644
August
C$ 1,640
September
C$ 1,630
October
C$ 1,541
November
C$ 1,234
December
C$ 986
At the present moment the cheapest month to fly business class to Ireland is currently May; with January being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.