The price is for the first flight on Thursday 2 July 2020, returning a week later.
On the same days, BA has an economy fare of just £558 return for the 12,000 mile round trip to Hong Kong.
Passengers on the 70-minute flight to Newquay airport will have to pay extra for food and drink onboard – though they could upgrade to business class at a fare of £873 return.
In contrast, travellers on the 12-hour long-haul to Hong Kong will get complimentary meals and drinks, as well as inflight entertainment.
While no checked baggage is included for the Hong Kong fare, British Airways offers the most generous cabin luggage allowance: 46kg per person.
On the same dates, GWR will sell a “walk-up” train ticket from London Paddington to Newquay for £119 return – though cheaper rail deals will be available when advance booking opens.
BA’s rival, Flybe, has an air fare from Gatwick of £132 on the same dates, or from Southend at £187.
British Airways has assigned an Airbus A319 jet to the 210-mile route for five round-trips per week between 2 July and 7 September.
For a few dates British Airways has a one-way fare for £90 from Heathrow, but most of the prices checked for the summer are around the same £640 return.
The Independent has asked BA for a comment.