Melbourne
Porto
2 stops
30h 55mPorto
Melbourne
2 stops
29h 50mMultiple Airlines
Melbourne
Lisbon Humberto Delgado
2 stops
36h 35mLisbon Humberto Delgado
Melbourne
2 stops
28h 20mFinnair
Melbourne
Porto
2 stops
37h 05mPorto
Melbourne
2 stops
32h 50mSWISS
Sydney Kingsford Smith
Lisbon Humberto Delgado
2 stops
32h 55mLisbon Humberto Delgado
Sydney Kingsford Smith
2 stops
35h 45mTurkish Airlines
Melbourne
Lisbon Humberto Delgado
1 stop
26h 00mLisbon Humberto Delgado
Melbourne
2 stops
37h 00mEtihad Airways
Sydney Kingsford Smith
Lisbon Humberto Delgado
1 stop
32h 55mLisbon Humberto Delgado
Sydney Kingsford Smith
1 stop
34h 40mQatar Airways
January
$7,047
February
$3,924
March
$3,701
April
$3,855
May
$3,744
June
$3,888
July
$3,061
August
$4,035
September
$4,008
October
$3,854
November
$3,676
December
$3,834
At the present moment the cheapest month to fly business class to Portugal is currently July; with January being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.