One Way
Fare Type:
  • Regular
  • Armed ForcesNEW
    Armed Forces Fare

    Applicable for serving and retired personnel of Armed Forces and Paramilitary Forces, their recognised dependants like spouses and children, and war widows. It is mandatory to show a valid ID or dependant card at the airport, without which boarding might be denied.

  • Student
    Student Fare

    Only students above 12 years of age are eligible for special fares and/or additional baggage allowances. Carrying valid student ID cards and student visas (where applicable) is mandatory, else the passenger may be denied boarding or asked to pay for extra baggage.

  • Senior Citizen
    Senior Citizen Fare

    Only senior citizens above the age of 60 years can avail this special fare. It is mandatory to produce proof of Date of Birth at the airport, without which prevailing fares will be charged.

  • Double Seat
    Fly Safer with Double Seat

    Step up physical distancing by booking two or three adjacent seats for one traveller. Opt from ‘Double/ Entire Row’ by Indigo or ‘GoMore’ service by GoAir - available only for domestic one-way economy class bookings.

Popular Filters

One Way Price

₹ 13,602 ₹ 3,24,000

Duration

1 h 20 m 18 h 30 m

Stops From Zurich

Departure From Zurich

6 AM to 12 PM

₹ 18,621

12 PM to 6 PM

₹ 13,602

After
6 PM

₹ 22,407

Arrival at Vienna

6 AM to 12 PM

₹ 19,461

12 PM to 6 PM

₹ 18,621

After
6 PM

₹ 13,602

Alliances & Airlines

Oneworld

(11)

SkyTeam

(11)

Star Alliance

(81)

+ 15 more

Layover Airports

+ 17 more

Layover Duration

50 m 13 h 30 m

Zurich to Vienna Austrian Airlines

Lowest fare from Zurich to Vienna on 14 Dec - ₹10949


Cheap International Zurich to Vienna Austrian Airlines air tickets at MakeMyTrip India. Best Deals at Lowest fares guaranteed on flights from Zurich to Vienna by Austrian Airlines International Travel. Check Austrian Airlines booking, International Flight number, Flight status, Schedules online from Zurich to Vienna.Also book Vienna to Zurich Austrian Airlines flights tickets online.Avail Zero Cancellation for flight bookings.
Sorted By:
Departure
Duration
Arrival
Price
KLM Royal Dutch

₹ 14,202

₹ 13,602

₹ 600 Instant Discount

Get extra 7% off on HDFC bank credit cards using code HDFCCC

Zurich to Vienna , 14 Dec

KLM Royal Dutch KL | 1924

17:30

Sun, 14 Dec 25

Zurich, Switzerland

01 h 45 m

19:15

Sun, 14 Dec 25

Amsterdam, Netherlands

BAGGAGE : CHECK INCABIN

Information not available

KLM Royal Dutch KL | 1907

21:05

Sun, 14 Dec 25

Amsterdam, Netherlands

01 h 40 m

22:45

Sun, 14 Dec 25

Terminal T3

Vienna, Austria

BAGGAGE : CHECK INCABIN

Information not available

FARES
Cabin bagCheck-inCancellationDate ChangeMeal

Economy light

Fare offered by airline.

0 Kgs
0 Kg
Non-refundable fare
Not allowed
Get complimentary meals

₹ 14,202₹ 13,602

Economy standard

Fare offered by airline.

0 Kgs
1 Piece
Non-refundable fare
Date Change Fee starting
₹ 7,195
Get complimentary meals

₹ 18,118₹ 17,518

Economy flex

Fare offered by airline.

0 Kgs
1 Piece
No airline cancellation fee
Free date change allowed
Get complimentary meals

₹ 24,763₹ 24,021

Eurowings

₹ 18,702

₹ 17,552

₹ 1,150 Instant Discount

Get special Rs 1150 OFF using MMTMAXX

Zurich to Vienna , 14 Dec

Eurowings EW | 7763

15:45

Sun, 14 Dec 25

Zurich, Switzerland

01 h 25 m

17:10

Sun, 14 Dec 25

Terminal T1

Hamburg, Germany

BAGGAGE : CHECK INCABIN

Information not available

Eurowings EW | 7754

18:45

Sun, 14 Dec 25

Terminal T1

Hamburg, Germany

01 h 30 m

20:15

Sun, 14 Dec 25

Terminal T3

Vienna, Austria

BAGGAGE : CHECK INCABIN

Information not available

FARES
Cabin bagCheck-inCancellationDate ChangeSeatMeal

Fare Option 1

Fare offered by airline.

Not allowed
0 Kg
Non-refundable fare
Not allowed
Chargeable
No Meals

₹ 18,702₹ 17,552

Fare Option 2

Fare offered by airline.

0 Kgs
1 Piece
Non-refundable fare
Date Change Fee starting
₹ 7,195
----
----

₹ 38,708₹ 37,208

Condor

₹ 19,771

₹ 18,621

₹ 1,150 Instant Discount

Get special Rs 1150 OFF using MMTMAXX

Zurich to Vienna , 14 Dec

Condor DE | 4318

11:35

Sun, 14 Dec 25

Zurich, Switzerland

55 m

12:30

Sun, 14 Dec 25

Terminal T1

Frankfurt, Germany

BAGGAGE : CHECK INCABIN

Information not available

Condor DE | 4345

14:00

Sun, 14 Dec 25

Terminal T1

Frankfurt, Germany

01 h 20 m

15:20

Sun, 14 Dec 25

Terminal T1A

Vienna, Austria

BAGGAGE : CHECK INCABIN

Information not available

FARES
Cabin bagCheck-inCancellationDate ChangeSeatMeal

Fare Option 1

Fare offered by airline.

Not allowed
20 Kgs
Non-refundable fare
Not allowed
Chargeable
No Meals

₹ 19,771₹ 18,621

Condor

₹ 20,057

₹ 18,907

₹ 1,150 Instant Discount

Get special Rs 1150 OFF using MMTMAXX

Zurich to Vienna , 14 Dec

Condor DE | 4310

16:50

Sun, 14 Dec 25

Zurich, Switzerland

55 m

17:45

Sun, 14 Dec 25

Terminal T1

Frankfurt, Germany

BAGGAGE : CHECK INCABIN

Information not available

Condor DE | 4349

19:55

Sun, 14 Dec 25

Terminal T1

Frankfurt, Germany

01 h 20 m

21:15

Sun, 14 Dec 25

Terminal T1A

Vienna, Austria

BAGGAGE : CHECK INCABIN

Information not available

FARES
Cabin bagCheck-inCancellationDate ChangeSeatMeal

Fare Option 1

Fare offered by airline.

Not allowed
20 Kgs
Non-refundable fare
Not allowed
Chargeable
No Meals

₹ 20,057₹ 18,907

Air Malta

₹ 20,611

₹ 19,461

₹ 1,150 Instant Discount

Get special Rs 1150 OFF using MMTMAXX

Zurich to Vienna , 14 Dec

Air Malta KM | 491

17:40

Sun, 14 Dec 25

Zurich, Switzerland

02 h 20 m

20:00

Sun, 14 Dec 25

Malta, Malta

BAGGAGE : CHECK INCABIN

Information not available

Air Malta KM | 514

09:25

Mon, 15 Dec 25

Malta, Malta

02 h 20 m

11:45

Mon, 15 Dec 25

Terminal T1

Vienna, Austria

BAGGAGE : CHECK INCABIN

Information not available

FARES
Cabin bagCheck-inCancellationDate ChangeSeatMeal

Fare Option 1

Fare offered by airline.

Not allowed
0 Kg
Non-refundable fare
Not allowed
Chargeable
No Meals

₹ 20,611₹ 19,461

Condor

₹ 21,851

₹ 20,637

₹ 1,214 Instant Discount

Get special Rs 1214 OFF using MMTMAXX

Zurich to Vienna , 14 Dec

Condor DE | 4312

08:05

Sun, 14 Dec 25

Zurich, Switzerland

55 m

09:00

Sun, 14 Dec 25

Terminal T1

Frankfurt, Germany

BAGGAGE : CHECK INCABIN

Information not available

Condor DE | 4345

14:00

Sun, 14 Dec 25

Terminal T1

Frankfurt, Germany

01 h 20 m

15:20

Sun, 14 Dec 25

Terminal T1A

Vienna, Austria

BAGGAGE : CHECK INCABIN

Information not available

FARES
Cabin bagCheck-inCancellationDate ChangeSeatMeal

Fare Option 1

Fare offered by airline.

Not allowed
20 Kgs
Non-refundable fare
Not allowed
Chargeable
No Meals

₹ 21,851₹ 20,637

Pegasus Airlines

₹ 23,600

₹ 22,289

₹ 1,311 Instant Discount

Get special Rs 1311 OFF using MMTMAXX

Zurich to Vienna , 14 Dec

Pegasus Airlines PC | 948

10:55

Sun, 14 Dec 25

Zurich, Switzerland

02 h 50 m

15:45

Sun, 14 Dec 25

Istanbul-Sabiha Gokcen, Turkey

BAGGAGE : CHECK INCABIN

Information not available

Pegasus Airlines PC | 905

16:55

Sun, 14 Dec 25

Istanbul-Sabiha Gokcen, Turkey

02 h 20 m

17:15

Sun, 14 Dec 25

Vienna, Austria

BAGGAGE : CHECK INCABIN

Information not available

FARES
Cabin bagCheck-inCancellationDate ChangeSeatMeal

Fare Option 1

Fare offered by airline.

Not allowed
20 Kgs
Non-refundable fare
Not allowed
Chargeable
No Meals

₹ 23,600₹ 22,289

KLM Royal Dutch

₹ 23,099

₹ 22,407

₹ 692 Instant Discount

Get extra 7% off on HDFC bank credit cards using code HDFCCC

Zurich to Vienna , 14 Dec

KLM Royal Dutch KL | 1920

11:55

Sun, 14 Dec 25

Zurich, Switzerland

01 h 35 m

13:30

Sun, 14 Dec 25

Amsterdam, Netherlands

BAGGAGE : CHECK INCABIN

Information not available

KLM Royal Dutch KL | 1905

14:30

Sun, 14 Dec 25

Amsterdam, Netherlands

01 h 40 m

16:10

Sun, 14 Dec 25

Terminal T3

Vienna, Austria

BAGGAGE : CHECK INCABIN

Information not available

FARES
Cabin bagCheck-inCancellationDate ChangeMeal

Economy light

Fare offered by airline.

0 Kgs
0 Kg
Non-refundable fare
Not allowed
Get complimentary meals

₹ 23,099₹ 22,407

Economy standard

Fare offered by airline.

0 Kgs
1 Piece
Non-refundable fare
Date Change Fee starting
₹ 7,195
Get complimentary meals

₹ 27,256₹ 26,439

Economy flex

Fare offered by airline.

0 Kgs
1 Piece
No airline cancellation fee
Free date change allowed
Get complimentary meals

₹ 34,018₹ 32,998

Air France

₹ 23,670

₹ 22,960

₹ 710 Instant Discount

Get extra 7% off on HDFC bank credit cards using code HDFCCC

Zurich to Vienna , 14 Dec

Air France AF | 1615

14:50

Sun, 14 Dec 25

Zurich, Switzerland

01 h 20 m

16:10

Sun, 14 Dec 25

Terminal T2F

Paris, France

BAGGAGE : CHECK INCABIN

Information not available

Air France AF | 1238

21:00

Sun, 14 Dec 25

Terminal T2F

Paris, France

01 h 55 m

22:55

Sun, 14 Dec 25

Terminal T1

Vienna, Austria

BAGGAGE : CHECK INCABIN

Information not available

FARES
Cabin bagCheck-inCancellationDate ChangeMeal

Economy light

Fare offered by airline.

0 Kgs
0 Kg
Non-refundable fare
Not allowed
Get complimentary meals

₹ 23,670₹ 22,960

Standard

Fare offered by airline.

0 Kgs
1 Piece
Non-refundable fare
Date Change Fee starting
₹ 7,195
Get complimentary meals

₹ 26,992₹ 26,183

Flex

Fare offered by airline.

0 Kgs
1 Piece
No airline cancellation fee
Free date change allowed
Get complimentary meals

₹ 33,637₹ 32,628

Swiss, Eurowings

₹ 26,075

₹ 24,954

₹ 1,121 Deal

Get extra 7% off on HDFC bank credit cards using code HDFCCC

Zurich to Vienna , 14 Dec

Swiss LX | 1164 | Operated By Helvetic Airways

08:40

Sun, 14 Dec 25

Zurich, Switzerland

45 m

09:25

Sun, 14 Dec 25

Terminal T3

Stuttgart, Germany

BAGGAGE : CHECK INCABIN

Information not available

Eurowings EW | 2758

18:00

Sun, 14 Dec 25

Terminal T3

Stuttgart, Germany

01 h 15 m

19:15

Sun, 14 Dec 25

Terminal T1

Vienna, Austria

BAGGAGE : CHECK INCABIN

Information not available

FARES
Cabin bagCheck-inCancellationDate Change

Fare Option 1

Fare offered by airlines.

7 Kgs
1 Piece
Non-refundable fare
Date Change Fee starting
₹ 7,195

₹ 26,075₹ 24,954

About Zurich (ZRH)

Being the largest city in Switzerland, Zurich is among the most popular cities of the country. With a population of more than 2 million, the city meets all the requisites of a stupendous tourist destination. The city is also the financial centre of Switzerland and the head quarter of FIFA. With its cosmopolitan culture, the city counts among the niche places across the globe. There are over 500 bars and more than 1500 restaurants in the city, which bestows it the much deserved cosmopolitan status. The lavishly designed opera theatres, planned classic concerts, append an urban touch to its surroundings. The city has more than 50 artistically built museums, 59 movie show rooms, and 100 galleries, which enhances its likeability among visitors. The official language of Zurich is standard German, used in all official publications and announcements. You can reach the admirable city by landing down at the Zurich Airport, or can also take help from the other transport mediums, such as train, car, bus or even boat. Spend your time seeing the scenic sights of Grossmünster, Landesmuseum, Schanzengraben, Zurich West, Bahnhofstrasse and many more popular places. One can also indulge in activities like skiing and can also take a trip on the Zurich See. The numerous clubs and restaurants, like Rohstofflager, Hive Club, and K5-Club add spark to your night-life. The city also has respectful laws for the gay and lesbian travellers, which allows them to enjoy freely and confidently. You can roam around the city and can explore different places through the local travelling mediums like trams, S-Bahn, boat, and even the specialised night buses. You can go for shopping and can spend money on buying the world renowned Swiss watches, Swiss Army Knives, and Swiss hand-crafts. Overall the city bequeaths a promising and an unforgettable experience to all its visitors. While you start dreaming of going to the scintillating ambiance of Zurich, remember to keep a check on all the important requisites like ticket booking and fixing a proper accommodation for a comfortable stay at the place. To resolve this problem, MakeMyTrip has designed an easy to follow medium to book tickets online. They also specialise in booking the best hotel for you, as per your choice and budget. With number of profitable deals and cheap offers, the site assures one a budget friendly stay at the destination.

FAQs - Zurich to Vienna Austrian Airlines Flight

What is the luggage limit on Austrian Airlines flights from Zurich to Vienna?

A:
  • Economy passengers are allowed 20 kg of check-in luggage.
  • Hand luggage up to 7 kg is permitted in the cabin.
  • Extra baggage can be purchased in advance at lower rates.
  • Exceeding the limit at the airport may result in additional charges.

Do Austrian Airlines flights from Zurich to Vienna include food service?

A:
  • Austrian Airlines is a no-frills airline; meals are not complimentary.
  • You can add meals during booking.
  • Snacks and drinks are available for sale onboard.
  • Meal availability may vary based on route and timing.

How long does a non-stop Austrian Airlines flight from Zurich to Vienna take?

A:
  • The journey usually lasts about 3 hours and 45 minutes.
  • Duration may differ slightly due to external conditions.
  • This is a direct international flight.
  • Confirm the exact timing at the time of booking.

What is Austrian Airlines's check-in baggage rule for overseas flights?

A:
  • Economy class allows 20 kg check-in baggage per traveler.
  • Overweight baggage incurs extra fees.
  • An infant gets 10 kg additional allowance.
  • Pre-booking extra weight online helps you save money.

Is it possible to pick a seat on Austrian Airlines from Zurich to Vienna?

A:
  • Yes, seat selection is available for an added fee.
  • You can pick window, aisle, or more spacious seats.
  • Some free options may be open during online check-in.
  • Seats can be selected during or after booking.

Are there entertainment features on Austrian Airlines flights?

A:
  • No seat-mounted entertainment is provided onboard.
  • It’s advised to bring your own devices and entertainment.
  • Magazines may be available on select flights.
  • Charging ports are generally not offered.

What is the cabin bag allowance on Austrian Airlines for this route?

A:
  • A cabin bag weighing up to 7 kg is allowed per person.
  • The combined dimensions must not exceed 115 cm.
  • One small personal item such as a laptop is permitted.
  • Extra cabin items may need to be checked in for a fee.

Can I do online check-in with Austrian Airlines for this flight?

A:
  • Yes, web check-in opens 48 hours before departure.
  • It closes two hours before your scheduled flight.
  • You’ll receive a digital boarding pass via email or download.
  • Seat choice during check-in might be free or chargeable.

Does Austrian Airlines provide boarding priority or help for families?

A:
  • Priority boarding can be purchased or is granted to eligible groups.
  • Families with small children or elderly passengers get assistance.
  • As a budget airline, it doesn’t offer loyalty benefits.
  • You can request special services while booking.

What is the usual cost of a ticket from Zurich to Vienna on Austrian Airlines?

A:
  • Fares generally range from ₹9,000 to ₹15,000 for one-way trips.
  • Prices depend on booking date and travel season.
  • Booking early often results in better deals.
  • Charges for bags, seats, and food may be extra.

What are the additional fees besides base fare on Austrian Airlines?

A:
  • You’ll pay extra for baggage beyond the free allowance.
  • Food, insurance, and seat selection cost extra.
  • Taxes and fees are typically included in the total price.
  • Processing or convenience fees may apply.

How can I get the best price for Austrian Airlines flights on MakeMyTrip?

A:
  • Use the fare calendar or cheapest month tools.
  • Book 30 to 45 days in advance for better pricing.
  • Set up alerts for price drops.
  • Compare fares across weekdays and times of day.

Can I make changes to my Austrian Airlines booking on MakeMyTrip?

A:
  • Yes, cancellations and rescheduling are possible through Manage Booking.
  • Fees depend on fare type and notice period.
  • Refunds (if eligible) are processed by MakeMyTrip.
  • Review fare rules before confirming bookings.

If I cancel my Austrian Airlines ticket to Vienna, will I get a refund?

A:
  • It depends on the type of fare and cancellation time.
  • Low-cost tickets often have minimal or no refund value.
  • Airport and government taxes may be refunded.
  • Refunds go back to your original mode of payment.

Which payment methods can I use for booking Austrian Airlines tickets?

A:
  • You can pay via debit/credit cards, UPI, or net banking.
  • EMI plans may be offered for high-value bookings.
  • MakeMyTrip gift cards and wallet are accepted.
  • International cards with 3D Secure are supported.

When should I reach Zurich airport for an international Austrian Airlines flight?

A:
  • Arrive at the airport at least 3 hours ahead of your flight.
  • Check-in counters close 60 minutes before departure.
  • Even with online check-in, baggage drop is mandatory.
  • Busy travel times may lead to longer wait times.

How often does Austrian Airlines operate between Zurich and Vienna?

A:
  • The airline runs this route daily or several times weekly.
  • Schedules may shift depending on demand and season.
  • Visit MakeMyTrip or the airline's site for updates.
  • Flight frequency tends to increase around holidays.

Does this route offer festive deals or discounts?

A:
  • Yes, promotional offers often coincide with festivals or holidays.
  • Watch for flash deals and partner bank offers.
  • Traveling in off-season months can reduce costs.
  • Apply promo codes at checkout to save.

Can I book a group trip on Austrian Airlines from Zurich to Vienna?

A:
  • Yes, group travel is allowed for 10 or more people.
  • Discounts and installment payments may be offered.
  • Group bookings must be made via agents or support teams.
  • Policies on name changes differ for group tickets.

What do I do if my luggage is delayed or missing with Austrian Airlines?

A:
  • Report the issue immediately to the airline staff at the airport.
  • You’ll be issued a Property Irregularity Report (PIR).
  • Compensation might be offered depending on findings.
  • You can follow up with airline support for updates.

Can I buy travel insurance with my Austrian Airlines booking?

A:
  • Yes, insurance can be added while booking your ticket.
  • Policies usually cover delays, cancellations, and health emergencies.
  • Third-party insurers linked with the airline provide coverage.
  • Check the policy documents before purchase.

Are animals permitted on Austrian Airlines flights?

A:
  • Only service animals like guide dogs are allowed in the cabin.
  • Other pets may be transported as checked cargo.
  • Advance notice and approvals are required.
  • Contact the airline for pet travel requirements.

How do I receive a GST invoice for my Austrian Airlines ticket?

A:
  • You can download it via MakeMyTrip if booked there.
  • Enter your GST number during checkout to get the invoice.
  • Some airlines also offer GST invoices on request.
  • This helps with business travel reimbursements.

Is onboard internet available on Austrian Airlines flights?

A:
  • No, Austrian Airlines does not offer in-flight Wi-Fi services.
  • Download entertainment in advance to use offline.
  • No online browsing or messaging is available during the flight.
  • Be prepared to stay offline for the duration.

What are the consequences if I miss my Austrian Airlines flight?

A:
  • No-shows usually result in full fare loss.
  • You may contact the airline to explore rebooking options.
  • Refunds aren't generally given for missed flights.
  • Travel insurance might help depending on the policy.

Can I pay to upgrade my seat on a Austrian Airlines flight?

A:
  • Yes, upgrades to more comfortable seats are available for a fee.
  • There is no business class on Austrian Airlines.
  • Seat upgrades can be done online or at the airport.
  • Upgrades depend on seat availability.

Is there an official app for Austrian Airlines?

A:
  • Yes, the airline has a mobile app for iOS and Android.
  • You can book, check-in, and manage bookings on the app.
  • Flight status updates and offers are also provided.
  • Mobile boarding passes and alerts are supported.

Can I change the passenger name on my Austrian Airlines ticket?

A:
  • Minor name corrections may be allowed.
  • Complete name changes are not permitted.
  • Contact the airline quickly if there's a mistake.
  • Always verify name spelling before booking.
Zurich Address
Unique (Flughafen Zurich AG), 8058 Zurich-Flughafen, Switzerland
Tel: (043) 816 2211 | Fax: (043) 816 5010

About Vienna (VIE)

Renowned for its contemporary look and traditional values, Vienna, the capital city of the Republic of Austria, is the largest city of the country in terms of area and populates. The mark of this city can be seen by the fact that it is named in the list of UNESCO World Heritage. Throughout the year, many festivals and carnivals are celebrated in this city. People here love to lead a life with full of colours and joy, therefore you always admire the warm hospitality of Vienna. The clean roads, wider well planned streets and lush green parks are the specialties of this lively city. Moving in and around the metropolis, you will find that Vienna has a lot to offer for every age-group. To add more charm and fun in your holidays, Vienna has various types of attractions in its lap. There are places like Anchor Clock (Ankeruhr), Belvedere Palace, Burgtheater (National Theater), Danube Tower & Danube Island, St. Stephen's Cathedral, Haas House, Spanish Riding School and many others where you can go and spend quality time with your family and friends. The one thing which tourists never forget while visiting this city is to visit its art museums. You can find world's most renowned collections of famous artists. Due to its pleasant climate, you can come here all through the year but still local people consider the months of May to August best to explore every corner of the city. Vienna International Airport (VIE) connects the city with different parts of the world. One can book the Vienna flights as well as hotels in Vienna at affordable prices via MakeMyTrip.com. It is the best online travel portals in the world which is quite popular for its attractive offers among the travellers. To book your Vienna tour package, you just need to follow few simple steps here. So, enjoy a comfortable and enjoyable tour with MakeMyTrip.

Vienna Address

About Austrian Airlines

Austrian Airlines is Austria’s largest airline as well as flag carrier of Austria and is assumed to be a low cost air carrier. It is headquartered in the grounds of Vienna International Airport in Schwechat. It was established as Österreichische Luftverkehrs AG through the merger of Air Austria and Austrian Airways and began operations on 30 September 1957. The domestic service by this airline was launched on 1 May 1963 and it began transatlantic services on 1 April 1969 with a Vienna via Brussels to New York service in co-operation with Sabena. The first Jet Airliner, “Sud Aviation Caravelle” was ordered by Austrian Airlines on 18 February 1963 and this Jet Airliner started to operate from 1973. Austrian Airlines started to standardize its fleet in a short period of time in favor of 9 Douglas DC-9-32. These Douglas serve for many years on short and medium-haul flights. In year 1977, it became the first Customer for the DC-9-80 (or McDonnell Douglas MD-80) along with Swissair.