A few months ago, air travel intelligence firm Official Airline Guide (OAG) revealed that Emirates airline is one of the most punctual in the world. That punctuality applies to all routes. But, what doesn't apply to all routes is the amount of money made. A number of routes are proven to be more lucrative than others, and that's what OAG's latest report pointed out. 

In it, it was revealed that Emirates airline's London Heathrow route is the third most lucrative in the world. The carrier's Dubai-London route brought in revenues of $796 million last year. Emirates operates seven daily flights on the route with seven others in the opposite direction. 

Emirates is not the only Arab airline part of the list. Qatar Airways' route to London is also among the list of the top 10 highest revenue routes in the world. The carrier made a total of $639 million in the stated period. 

"For every airline there are a small selection of lucrative routes where either competitive advantage, market circumstances or limited competition make for very attractive revenues," John Grant of OAG said.

Top 10 Highest Revenue Routes by Airline (April 2018 - March 2019)

Source: OAG

The most lucrative route in the world is the Heathrow service to JFK New York, with revenues surpassing $1 billion. In fact, five of the top 10 most lucrative routes operate from Heathrow - serving New York, Dubai, Singapore, Doha, and Hong Kong.

Yes, Emirates' route to London is one of the most lucrative in the world, but that doesn't mean the carrier's financials have been increasing. In fact, according to OAG's numbers, Emirates actually saw a decrease in its revenues. In 2017, the carrier recorded revenues of $829 million. 

Emirates Group, the parent company of the Dubai-based carrier, released its 2018-2019 annual report back in May, revealing it has suffered a "tough" financial year.

In light of increasing fuel prices and decreasing travel demand in regional economies, Emirates Group reported a profit of 871 million dirhams ($237 million), marking the airline's lowest earnings in a decade.