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Alsie Express is a Danish airline based in Sonderborg and was founded in May 2013. It's a sister airline of Air Alsie and both airlines are owned by Sandma Holding A/S. The airline has grown over the years from its first flight between Sonderborg and Copenhagen to now flying to six destinations in Denmark and the United Kingdom. At one point in 2014, the airline even operated to London Luton Airport.

All staff at Alsie Express are trained to deliver the best safety standard with the best care even if you're a nervous flyer. A fleet of ATR 72 is equipped at the airline, giving passengers the safest flights possible from its base Sonderborg.

Baggage Policy

Alsie Express has different baggage policies for carry-on and checked baggage.

Carry-on Baggage

All passengers are allowed to bring one 8kg carry-on baggage, as long as it doesn't exceed 55cm x 40cm x 23cm in three dimensions. A personal item such as a laptop, a camera bag or a purse is also allowed onboard for every passenger.

Any larger items would have to be transported as checked baggage. Items such as a stroller can be carried to the boarding gate but it has to go into the aircraft cargo hold at the boarding gate as it cannot be stored onboard.

No dangerous goods and prohibited items are allowed onboard including any liquid over 100ml.

Checked Baggage

The baggage allowance for each passenger should be clearly stated on the e-ticket, please check the e-ticket issued or contact us for further information if you've booked with Alternative Airlines. As a general rule, any baggage weighing over 32kg wouldn't be accepted by the airline.

Excess baggage can be added to the booking at checkout too when you buy flights with Alternative Airlines.


Find out about Alsie Express' check-in policy, including check-in closing and opening times.

Online Check-in

Online check-in is available via the airline website, it's open 24 hours before and closes one hour before the scheduled departure time.

Once online check-in is done, passengers would obtain a boarding pass in the email address provided. Passengers travelling with carry-on baggage only can go straight to airport security with the boarding pass. Other passengers travelling with checked baggage must proceed to the bag-drop area at the airport before going to airport security.

Airport Check-in

Check-in at Sonderborg Airport must be completed 15 minutes before departure, whereas flights from Copenhagen Airport and Bornholm Airport, check-in must be completed 30 minutes before departure.

Frequent Flyer Programme

There's no frequent flyer programme available for customers but frequent flyers can buy a multi-trip discount card with the airline.

Airline Alliance

The airline isn't part of any airline alliances but it has interline agreements with multiple airlines including SAS Scandinavian AirlinesFinnairQatar AirwaysAir GreenlandDAT Danish Air TransportKLMAir France and FlexFlight.

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Destinations that Alsie Express flies to

As of September 2020, the airline is flying to six destinations and other charter routes. These destinations include three destinations in Demark and three in the United Kingdom like Copenhagen, Jersey and Bornholm.

Alternatives to Alsie Express

Please click on the logos below to find out more about airlines that fly similar routes:

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Hub Airport

Sønderborg Airport

Sønderborg Airport (SGD) is located 7km from the centre of Sønderborg, Denmark officially opened in 1968 and has an active asphalt runway and one passenger terminal. It accommodated 72 thousand passenger in 2018. Alsie Express is the only airline flying to the airport.


As of September 2020, the airline operates a fleet of ATR 72-500 twin-turboprop aircraft. These aircraft can accommodate between 48 to 64 passengers.

Seat Class

For these short flights, Economy Class is the only class available. Depending on the aircraft configuration, the ATR 72 can either accommodate 48 or 64 passengers. Their aircraft is in a 2 x 2 configuration with either 43" or 32" seat pitch.