AUD/AU
Find cheap flights to Sion in 2026/2027 from $2,500 This is the cheapest return flight found to Sion from Australia on FlightsFinder on September 16th 2026 at 10:50. This offer may no longer be available. Click the offer to check live prices & dates of travel.
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Our Flight Finder compares the cheapest flights to Sion from the most established flight comparison sites.
Fly to Sion and visit sites like Valère Basilica, Château de Tourbillon, Thyon & Saint-Léonard underground lake.
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2. Compare the best Sion deals from top comparison engines
3. Book your Sion flight at the cheapest price
These economy flights were found on FlightsFinder from Australia to Sion in the last few days. Prices subject to availability.
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These economy flights were found on FlightsFinder from Australia to Sion in the last few days. Prices subject to availability.
No flights found for this month.
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According to our data, October is on average the cheapest time to book flights to Sion.
You can get flights from $2,500 return.
According to our data, December is on average the most expensive time to book flights to Sion.
A return flight could set you back more than $3,458.
Nestled in the heart of the Swiss Alps, Sion is a captivating blend of old-world charm and modern sophistication. The city’s picturesque setting, with the imposing Valère and Tourbillon castles overlooking the quaint town, creates a mesmerising backdrop for exploring its rich history and cultural heritage. Wander through its cobbled streets lined with charming boutiques and cafes, or venture into the surrounding vineyards to sample the renowned local wines. With a perfect balance of natural beauty, historic treasures, and contemporary amenities, Sion promises an unforgettable experience for travellers seeking a unique destination in Switzerland.
A good price for a flight to Sion is $2250 - $2750.
The popular airports near Sion are Geneva Airport, Zurich Airport, and Milan Malpensa Airport.
The flight to Sion (SIR) is roughly 23 hours 32 minutes and 10,369 miles (16,687 kilometres) from Sydney, Australia - Kingsford Smith Airport (SYD).
The best way is to compare flights to Sion from leading comparison sites using our search engine dashboard.
We have currently found no direct flights to Sion.
Here is the average weather forecast in Sion by month:
• Jan: 4°C
• Feb: 7°C
• Mar: 13°C
• Apr: 17°C
• May: 21°C
• Jun: 25°C
• Jul: 27°C
• Aug: 26°C
• Sep: 22°C
• Oct: 17°C
• Nov: 10°C
• Dec: 5°C
The main airport in Sion is approximately 2 kilometers from the city center.
Typically, flights are cheapest to Sion 2 months before departure.
Studies show flights to Sion are typically cheaper on Tuesdays and Wednesdays.
22.9 °C
Fri, 18 Sep 2026
Average Temperature
4°C
Jan
7°C
Feb
13°C
Mar
17°C
Apr
21°C
May
25°C
Jun
27°C
Jul
26°C
Aug
22°C
Sep
17°C
Oct
10°C
Nov
5°C
Dec
Sydney, Australia - Kingsford Smith Airport (SYD) to Sion (SIR)
Distance:
10,369 miles (16,687 kilometres)
Average flight time (direct 23 hours 32 minutes)
Brisbane, Australia - Brisbane International Airport (BNE) to Sion (SIR)
Distance:
10,168 miles (16,363 kilometres)
Average flight time (direct 23 hours 5 minutes)
Melbourne, Australia - All Airports (MEL) to Sion (SIR)
Distance:
10,204 miles (16,422 kilometres)
Average flight time (direct 23 hours 10 minutes)
Perth, Australia - Perth International Airport (PER) to Sion (SIR)
Distance:
8,618 miles (13,869 kilometres)
Average flight time (direct 19 hours 39 minutes)
Cairns, Australia - Cairns International Airport (CNS) to Sion (SIR)
Distance:
9,316 miles (14,993 kilometres)
Average flight time (direct 21 hours 12 minutes)
Adelaide, Australia - Adelaide International Airport (ADL) to Sion (SIR)
Distance:
9,806 miles (15,781 kilometres)
Average flight time (direct 22 hours 17 minutes)
Darwin, Australia - Darwin International Airport (DRW) to Sion (SIR)
Distance:
8,424 miles (13,556 kilometres)
Average flight time (direct 19 hours 13 minutes)
Gold Coast, Australia - Coolangatta Airport (OOL) to Sion (SIR)
Distance:
10,222 miles (16,451 kilometres)
Average flight time (direct 23 hours 12 minutes)
Townsville, Australia - Townsville International Airport (TSV) to Sion (SIR)
Distance:
9,483 miles (15,261 kilometres)
Average flight time (direct 21 hours 34 minutes)
Mount Isa, Australia - Mount Isa Airport (ISA) to Sion (SIR)
Distance:
9,229 miles (14,853 kilometres)
Average flight time (direct 21 hours)
Kununurra, Australia - Kununurra Airport (KNX) to Sion (SIR)
Distance:
8,491 miles (13,665 kilometres)
Average flight time (direct 19 hours 22 minutes)
Newcastle, Australia - Williamtown Metropolitan Area Airport (NTL) to Sion (SIR)
Distance:
10,353 miles (16,661 kilometres)
Average flight time (direct 23 hours 30 minutes)
Mackay, Australia - Mackay Airport (MKY) to Sion (SIR)
Distance:
9,686 miles (15,588 kilometres)
Average flight time (direct 22 hours 1 minute)
Hobart, Australia - Hobart International Airport (HBA) to Sion (SIR)
Distance:
10,482 miles (16,870 kilometres)
Average flight time (direct 23 hours 47 minutes)
Launceston, Australia - Launceston Airport (LST) to Sion (SIR)
Distance:
10,435 miles (16,794 kilometres)
Average flight time (direct 23 hours 41 minutes)
Cloncurry, Australia - Cloncurry Airport (CNJ) to Sion (SIR)
Distance:
9,276 miles (14,928 kilometres)
Average flight time (direct 21 hours 6 minutes)
Paraburdoo, Australia - Paraburdoo Airport (PBO) to Sion (SIR)
Distance:
8,319 miles (13,388 kilometres)
Average flight time (direct 18 hours 59 minutes)
Karratha, Australia - Karratha Airport (KTA) to Sion (SIR)
Distance:
8,159 miles (13,131 kilometres)
Average flight time (direct 18 hours 37 minutes)
Kalgoorlie-Boulder, Australia - Kalgoorlie-Boulder Airport (KGI) to Sion (SIR)
Distance:
8,829 miles (14,208 kilometres)
Average flight time (direct 20 hours 7 minutes)
Learmonth, Australia - Learmonth Airport (LEA) to Sion (SIR)
Distance:
8,101 miles (13,038 kilometres)
Average flight time (direct 18 hours 30 minutes)
Port Macquarie, Australia - Port Macquarie Airport (PQQ) to Sion (SIR)
Distance:
10,342 miles (16,644 kilometres)
Average flight time (direct 23 hours 28 minutes)
Port Hedland, Australia - Port Hedland International Airport (PHE) to Sion (SIR)
Distance:
8,232 miles (13,248 kilometres)
Average flight time (direct 18 hours 47 minutes)
Canberra, Australia - Canberra Airport (CBR) to Sion (SIR)
Distance:
10,328 miles (16,621 kilometres)
Average flight time (direct 23 hours 27 minutes)
From Sydney (SYD), Australia to Sion, Switzerland (SIR): $2,500
Depart: 16 Oct 2026 · Return: 22 Oct 2026 Price found 16 Sep 2026, 10:50
From Melbourne (MEL), Australia to Sion, Switzerland (SIR): $2,674
Depart: 29 Oct 2026 · Return: 05 Nov 2026 Price found 14 Sep 2026, 10:30
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