The Indian discount airline needs to ramp up its 43-plane fleet quickly to pose a meaningful threat to IndiGo, which controls 38.5 per cent of the market and flies 108 aircraft.
IndiGo's owner, InterGlobe Aviation, has placed orders for 430 Airbus A320neo planes, with a target to build a 1,000-jet fleet eventually.
A SpiceJet spokesman confirmed that Singh is attending this week's Farnborough Air Show in the UK, but declined to say whether an order announcement is imminent.
"We will continue to work with them on the fleet needs and look forward to delivering their first 737Max," Dinesh Keskar, Boeing's senior vice president for sales, said in an e-mail.
"Airbus enjoys 70 per cent market share in India and most Indian carriers are growing their business with us," said Airbus spokesman Justin Dubon. "We'd be delighted to help SpiceJet too."
Bombardier, which is enjoying a revival with its C Series narrow-body jet starting service and winning a benchmark deal with Delta Air Lines, is in a separate race for more than 50 smaller planes that SpiceJet is buying. The Canadian aircraft producer will be competing against Brazil's Embraer SA and the Avions de Transport Regional, or ATR, joint venture of Airbus and Italy's Leonardo-Finmeccanica SpA.
Airbus enjoys 70 per cent market share in India and most Indian carriers are growing their business with us.
At least eight budget carriers dot the skies of India, where air travel grew more than 20 percent last year, according to the International Air Transport Association. In comparison, passenger traffic in China rose about 10 per cent and less than 5 per cent in the US, IATA said in December.
India also poses risks, with some carriers failing due to fuel taxes, tariffs and low fares.
As many as 17 airlines in India have shut down in the past two decades, while accumulated losses of operating airlines have reached 600 billion rupees ($8.9 billion), according to a research paper published in June by consulting company KPMG and the Associated Chambers of Commerce of India.
Liquor baron Vijay Mallya's Kingfisher Airlines was the most recent carrier to stop flying in 2012 after defaulting on payments to banks, vendors, airports and staff. SpiceJet was almost about to go down that path in December 2014, when it grounded the fleet for a day after oil companies refused to fuel its planes on credit, before retrenching and bouncing back.
Looking at the delivery schedule of existing orders, there's clearly space for more.
Shares of SpiceJet have more than tripled in the past year after co-founder Singh returned to the helm, compared with a 0.9 per cent decline in the benchmark S&P BSE Sensex. The stock rose 0.4 per cent to 66.35 rupees as of 10:27am in Mumbai.
A boom in Asian air travel may provide the bright spot that the planemakers are looking for as last month's so-called Brexit referendum for the UK to leave the European Union adds to uncertainty clouding the global economy while low fuel prices sap demand for new, more efficient jets.
On Monday, the first day of the Farnborough expo, Asian airlines were set to give the biggest boost to both Boeing and Airbus.
China's Xiamen Airlines signed an agreement to buy 30 Boeing 737 Max 200 planes valued at $3.39 billion at list price. India's Go Airlines India Pvt. is in talks with Airbus to purchase approximately 70 more A320neos worth $7.5 billion, adding to the 72 ordered two years ago, people familiar with the matter said.
The Indian market can absorb as many as 60 narrow-body aircraft a year, said KPMG's Dubey, adding that Prime Minister Narendra Modi's push for regional connectivity will help expand the flier base "significantly."
"Looking at the delivery schedule of existing orders, there's clearly space for more," Dubey said.