Today, we delve into the tangible and intangible intricacies of flying Allegiant Airline from Lehigh Valley International Airport, located in Allentown, Pennsylvania to Melbourne Orlando International Airport, situated in Florida’s Space Coast. This timely exposé brings to light evidence-based data, observational facts and inter-disciplinary resources, all set to enrich the travel experience of the discerning passenger.

Firstly, aircraft are chosen to be efficient and comfortable. Allegiant Air, a low-cost American carrier, operates its Allentown to Melbourne Orlando route with the Airbus A320. This aircraft is renowned for its superior fuel efficiency and comfort, boasting the widest single-aisle cabin in the skies today. Its configuration of leather seats and large overhead storage bins make it an optimal choice for this 874.7-mile journey, ensuring a seamless journey from departure to arrival.

The choice of airports, too, contribute to the experience. Lehigh Valley International Airport, nestled in Allentown, Pennsylvania, is prudently designed to service a smaller number of passengers than the usual large airports, ensuring a more relaxed pre-flight experience. It performs commendably in areas of lesser crowded terminals and shorter security lines.

On the other hand, Melbourne Orlando International Airport is a strategic stopover. The airport, though smaller, offers impressive passenger facilities. It is ideally situated for passengers desiring to explore Florida's Space Coast, home to Kennedy Space Center Visitor Complex and a multitude of wildlife-rich wetland areas. The airport’s vicinity to such marvels offers a unique blend of convenience and engagement, enhancing the overall travel proposition.

En route to Melbourne Orlando, Allegiant Air provides cost-effective comfort. While eschewing the frills associated with legacy carriers, Allegiant pays significant attention to customer comfort. Comprehensive amenities, including Wi-Fi and streaming services, are readily available at an additional cost, allowing passengers the opportunity to customize their flight experience as per their desires. Easy-access to onboard refreshments bolsters the overall in-flight comfort index.

Whilst embarking on a journey usually implies moving from Point A to Point B, certain nuances of flying are paramount, shaping the overall experience. For a time period of approximately 2 hours - the average flight duration of this route - passengers are encapsulated in a flying device, contained within a narrow delineation of personal space, yet disconnected from the grounding manifestations of terrestrial life. No doubt, given the right facilities, services, and overall travel environment, flying can transform from mere travel to an enriching experience.

In conclusion, from reducing travel-related stress through ingeniously designed airports to ensuring passenger comfort with state-of-the-art aircraft and onboard amenities, flying Allegiant air from Allentown to Melbourne Orlando has been methodically curated to provide optimal pleasure for its passengers. In addition, the surrounding bio-diverse attractions of Melbourne Orlando’s airport injects an additional serving of wonder and intrigue into the travel experience.

The understanding of such unique attributes, their intersections and implications, empowers the traveler to better manage expectations and revel in the full breadth of their flying journey. It is my hope that this exposé presents a complexly thrilling yet easily comprehensible narrative of what travelers can anticipate in their allegiant air voyage from Allentown to Melbourne Orlando.