✈ SYD → HEL

18H 51M IN ECONOMY = A FELONY AGAINST YOURSELF. UPGRADE.

Flight time
18h 51m
Distance
9,445 mi
Or
15,200 km
Jet lag
7h

Flight from Sydney to Helsinki

From Kingsford Smith (SYD), Australia Oceania  →  Vantaa (HEL), Finland Europe

↔ Flying the other way? Helsinki → Sydney

How long is the flight from Sydney to Helsinki?

A nonstop flight from Sydney (SYD) to Helsinki (HEL) takes about 18 hours 51 minutes, covering a great-circle distance of 9,445 miles (15,200 km). Actual scheduled time varies by airline, routing, and wind — expect ±15 to 30 minutes from this estimate.

Avg flight time

18h 51m

Nonstop, scheduled

Distance

9,445 mi

15,200 km · great-circle

Avg speed

807 km/h

Door-to-door including taxi

Time zones & jet lag

Sydney timezone

UTC+10

Australia/Sydney

Helsinki timezone

UTC+3

Europe/Helsinki

Time difference

-7h

7 hours behind

Jet lag (rough)

~4.9d

Westward — easier

CO₂ footprint per passenger

Economy class, single passenger. Source: DEFRA 2024 averages.

✈ Flight 2250 kg CO₂
🚗 Car (alone) 2599 kg CO₂
🚆 Train 623 kg CO₂

This flight emits roughly 3.6× the CO₂ of an equivalent train trip and 0.9× a car driven alone over the same distance.