Austrian Airlines Flight 456 Deals & Information (2025/2026)

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Austrian Airlines Flight 456 Route Deals From $137

The cheapest prices found with in the last 7 days for return flights were $157 and $137 for one-way flights to Vienna Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Mar 16 - Sun, Mar 22
LHR
Heathrow
VIE
Vienna Intl.
$157 Roundtrip, found 5 days ago
$157
Roundtrip
found 5 days ago
Select Austrian Airlines flight, departing Mon, Mar 16 from Heathrow to Vienna Intl., returning Sun, Mar 22, priced at $157 found 5 days ago
Sat, Dec 6 - Sat, Dec 13
LHR
Heathrow
VIE
Vienna Intl.
$178 Roundtrip, found 11 hours ago
$178
Roundtrip
found 11 hours ago
Select Austrian Airlines flight, departing Sat, Dec 6 from Heathrow to Vienna Intl., returning Sat, Dec 13, priced at $178 found 11 hours ago
Mon, Mar 16 - Sun, Mar 22
LHR
Heathrow
VIE
Vienna Intl.
$185 Roundtrip, found 5 days ago
$185
Roundtrip
found 5 days ago
Select Austrian Airlines flight, departing Mon, Mar 16 from Heathrow to Vienna Intl., returning Sun, Mar 22, priced at $185 found 5 days ago
Mon, Mar 16 - Sun, Mar 22
LHR
Heathrow
VIE
Vienna Intl.
$188 Roundtrip, found 5 days ago
$188
Roundtrip
found 5 days ago
Select Austrian Airlines flight, departing Mon, Mar 16 from Heathrow to Vienna Intl., returning Sun, Mar 22, priced at $188 found 5 days ago
Thu, Jun 19 - Sun, Jun 22
LHR
Heathrow
VIE
Vienna Intl.
$343 Roundtrip, found 3 hours ago
$343
Roundtrip
found 3 hours ago
Select Austrian Airlines flight, departing Thu, Jun 19 from Heathrow to Vienna Intl., returning Sun, Jun 22, priced at $343 found 3 hours ago

Frequently asked questions

What route does flight number OS456 take?
OS456 jets between Heathrow Airport and Vienna Airport (VIE-Vienna Intl.) and is a direct flight. This journey usually takes 2 hours and 15 minutes.
How often is OS456 on time?
Around 61% of flight number OS456 services depart on time — so you may want to leave a bit of space in your travel plans. If you experience a delay, the typical wait is approximately 17 minutes. Take this into account if you have a connecting flight or your special someone is picking you up from the airport. This route has a 1.9-star rating.
What terminal does OS456 fly out of?
Flights between Heathrow Airport (LHR) and Vienna Intl. Airport (VIE) are served by flight number OS456, and those traveling on this route usually leave from Terminal 2.
What kind of plane is on flight number OS456?
Get set to jump on board an Airbus A321 if you’re traveling on flight OS456. The majority of flights from London Airport (LHR-Heathrow) to Vienna Airport use this kind of plane.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your OS456 flight with Travelocity, please visit our Customer Service Portal.