But analysts expect this year's show to be relatively subdued, with slowing economies, trade tensions and geopolitical uncertainties unsettling airlines - highlighted by a profit warning from Germany's Lufthansa late on Sunday.
It has so far used the annual Paris show - traditionally the largest marketplace for both civilian and military aircraft - to offer further apologies and reassurances over two fatal 737 Max crashes.
Speaking on Sunday before the Paris Air Show, Muilenburg told reporters that Boeing engineers learned in 2017 that a warning light in the cockpit of its top-selling Max, created to alert pilots when the two angle-of-attack sensors disagreed, didn't work as intended.
Airbus will unveil an order for its A330neo wide-body jet from Philippines carrier Cebu Air after a tough battle with Boeing, as well as at least 10 A321XLRs from the same airline, industry sources said. If all of the 35 options also announced are taken up, Saudia could be looking at a 100-plane A320neo fleet.
Several Boeing 777X aircraft are seen in various stages of production during a media tour of the Boeing 777X at the Boeing production facility in Everett, Washington, U.S., February 27, 2019.
Raptors’ president encounter with deputy being investigated
It was a memorable occasion, with the Toronto Raptors winning the league title on the Golden State Warriors' home court. Golden State's three-peat bid was ended on Thursday after the Raptors dethroned the Warriors with a 4-2 series victory.
Airbus unveiled an aircraft deal with Taiwan's China Airlines on Wednesday, snatching the carrier's medium-haul fleet renewal from Boeing a day after its US rival made a shock entry into the single-aisle fleet of British Airways owner IAG. The aircraft are scheduled for delivery between 2021 and 2026.
The airliner, set to be rolled out in 2023, has an "unprecedented" long range of up to 4,700nm (nautical miles), Airbus said.
Walsh isn't a stranger to Boeing, however, having started his career as a pilot flying 737-200s, the precursor to the MAX.
Its shares rose more than 3 per cent.
However, the cabin of an A320-series jet is typically pressurised to the equivalent of 7,000-8,000 feet above sea level, compared to an equivalent 6,000 feet for modern jets such as the Airbus A350 and Boeing 787.
Given the pressure on Boeing to secure a marquee order, IAG is likely to have locked in a good deal, with the bonus that big orders tend to come with steeper discounts.