Choosing not to notify the airline about your inability to use the non-refundable tickets might be seen as taking advantage of the situation, but whether it's considered spiteful depends on your intentions and the airline's policies.
Here are some points to consider:
Contractual obligation: When you purchase non-refundable tickets, you agree to the airline's terms and conditions, which usually state that the tickets are non-refundable. While it might be disappointing not to receive a refund, you have entered into a contractual agreement willingly.
Airline's perspective: Airlines often set their refund policies based on various factors, including operational costs, revenue management, and industry standards. Notifying the airline about your inability to use the tickets allows them to potentially resell those seats to other customers.
Impact on others: By not notifying the airline, you might prevent someone else from purchasing those seats, especially if the flight ends up being overbooked. This could inconvenience other travelers and affect the airline's operations.
Personal circumstances: Sometimes, unforeseen events can lead to changes in travel plans, and airlines may make exceptions in certain situations, such as emergencies or medical issues. It might be worth reaching out to the airline's customer service and explaining your circumstances to see if they can offer any assistance, even if it's not a full refund.
Reputation and conscience: Consider how you would feel about the decision in the long run. While the airline might not issue a refund, your actions could affect your conscience or reputation, especially if you feel you are acting against your values.
If you decide not to notify the airline, it's essential to be aware of the potential consequences and understand that the decision may not be well-received by everyone. Ultimately, the decision rests with you, and it's essential to weigh the ethical considerations and make the choice that aligns with your values and principles.