Toronto-based airline currently employs about 100 people in the capital.
Airport authority boss Mark Laroche says just one million passengers are expected to pass through the Ottawa terminal in 2021, down from 5.1 million two years ago.
Shorter, regional routes are likely to be among the first to be restored as airlines meet demand from visiting friends as well as business passengers resuming travel to nearby destinations.
Toronto-based carrier blamed the latest deferral on a recent surge in COVID-19 cases and ongoing travel restrictions aimed at curbing the spread of the virus.
The airline had already reduced the frequency of flights between Ottawa and the Nova Scotia city from once daily to twice weekly during the pandemic.
Airport says changes will speed up passenger flow and allow for more physical distancing while travellers and their carry-on items are being screened.
YOW plays key role in eastern Arctic supply chain, but position cannot be taken for granted, officials say
PAL Airlines says new five-day-a-week service connecting St. John’s with Moncton, N.B., will be extended to Ottawa once restrictions on travel to Atlantic Canada are lifted.
As travellers return to YOW, they’ll see several new protective measures – some subtle, others more noticeable – aimed at keeping them, airport employees and the wider community healthy.
YOW now expects only about 2.5 million passengers to pass through its gates in 2020, down from its original forecast of 5.2 million before COVID-19 hit.