Calgary
Dublin
Nonstop
7h 55mWestJet
Toronto Pearson Intl
Dublin
1 stop
12h 55mTAP AIR PORTUGAL
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
Calgary
Dublin
Nonstop
7h 55mWestJet
Toronto Pearson Intl
Dublin
1 stop
9h 05mDublin
Toronto Pearson Intl
1 stop
14h 40mIcelandair
Toronto Pearson Intl
Dublin
Nonstop
6h 35mDublin
Toronto Pearson Intl
Nonstop
7h 35mAir Transat
Toronto Pearson Intl
Dublin
1 stop
9h 05mDublin
Toronto Pearson Intl
Nonstop
7h 35mMultiple Airlines
Toronto Pearson Intl
Dublin
2 stops
20h 10mDublin
Toronto Pearson Intl
1 stop
25h 30mScandinavian Airlines
Calgary
Dublin
Nonstop
7h 55mDublin
Calgary
Nonstop
8h 21mWestJet
Toronto Pearson Intl
Dublin
Nonstop
6h 40mDublin
Toronto Pearson Intl
Nonstop
7h 05mLufthansa
January
C$ 2,009
February
C$ 1,017
March
C$ 1,059
April
C$ 1,532
May
C$ 963
June
C$ 1,560
July
C$ 1,635
August
C$ 1,640
September
C$ 1,637
October
C$ 1,541
November
C$ 1,216
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.