What are the most profitable flights?

Top 10 Highest Revenue Routes by Airline Only one route breaks the billion dollar barrier: British Airways' service between London Heathrow Airport (LHR) and New York's John F. Kennedy Airport (JFK). Air Canada's route between Vancouver and Toronto bottoms out the list with $541 million of revenue in 2019.



In 2026, the most profitable flights are typically those on "Blue Ribbon" long-haul routes that carry a high volume of premium cabin passengers (First and Business Class). Historically, the New York (JFK) to London (LHR) corridor remains the world's most lucrative route, often generating over $1 billion in annual revenue for carriers like British Airways. Other high-margin routes include London to Dubai and Singapore to London. The profitability of these flights isn't just about the ticket price; it's also about belly cargo. In 2026, many "profitable" flights are actually those where the cargo revenue from e-commerce and time-sensitive electronics pays for the fuel, allowing the passenger fares to be pure profit. Domestically, routes like Sydney to Melbourne and New York to Chicago remain high-frequency, high-profit "cash cows" for regional carriers due to the consistent demand from corporate travelers who book expensive last-minute fares.

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Here's the full top ten busiest air routes in the world right now, along with the number of scheduled seats over the past 12 months.
  • Cairo to Jeddah (3,234,683 seats)
  • Dubai to Riyadh (3,191,090)
  • London Heathrow to New York JFK (2,848,044)
  • London Heathrow to Dubai (2,697,593)
  • Kuala Lumpur to Singapore (2,443,176)


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United Airlines: Newark (EWR) - San Francisco (SFO) United Airlines earned the most revenue on a domestic route in the US with its Newark to San Francisco route. The Chicago-based airline with hubs on both ends of the route brought in $689,371,368 through 53,516 scheduled flight hours that earned $12,882 per hour.

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At the moment, the world's longest nonstop flight is the route between New York and Singapore. With a calculated distance of 15,349km and almost 19 hours of flying, the route operated by Singapore Airlines is the longest in the world.

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Hartsfield–Jackson Atlanta International: Delta Air Lines Hub. In the realm of airline hubs within the United States, Delta Air Lines proudly takes the top spot for the total number of scheduled departing seats in the 12-month period concluding in April 2023.

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1) American Airlines (AA) As of July 2022, major US carrier American Airlines (AA) flies to 350 destinations, including 269 domestic destinations and 81 international destinations in 50 countries.

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Airlines get an average of just under $189 of revenue for each passenger they fly, which include the base fare, ancillaries such as bag fees, fuel surcharges, and revenue for any cargo carried.

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Delta brought in adjusted revenue of nearly $14.6 billion for the period, up 13% year over year and in line with analysts' expectations. Net income for the period was $1.11 billion, or $1.72 per share, up 59% from $695 million, or $1.08 per share, during the same period a year earlier.

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The Bottom Line. Overall, Delta is consistently rated the more reliable airline. And when it comes to first-class flying, Delta's amenities possess a posh factor that United doesn't quite match, though it comes close. However, in many ways, the choice is a toss-up.

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Delta's fleet consists of 943 Airbus and Boeing aircraft. As of July 2023, Delta has 501 aircraft from Boeing or about 55 percent of the fleet and 421 aircraft from Airbus or about 45 percent of the fleet.

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Theoretically it is possible but even a supersonic jet would be hindered by factors such as speed restrictions and in-flight refuelling.

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The simple answer is yes, pilots do, and are allowed to sleep during flight but there are strict rules controlling this practice. Pilots would only normally sleep on long haul flights, although sleep on short haul flights is permitted to avoid the effects of fatigue.

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