Flying in and out of the new Western Sydney International Airport has been described as "seamless".
Passengers who boarded the first domestic commercial flight say it was easy to get to the airport, access parking and check-in.
The first international flight is scheduled to depart the new airport bound for New Zealand on Monday at 8:55am.
Passengers on the first commercial flights at the new Western Sydney Airport (WSI) were overjoyed at making history, describing the experience as "seamless".
Amid a celebratory atmosphere, Jetstar Flight JQ362 left the curfew-free airport just before 11:30am on Sunday headed for the Gold Coast.
It was one of three domestic services operated by the airline that had the distinction of being first to use the runway at Badgerys Creek.
Another first will happen on Monday, when Air New Zealand's international flight NZ166 to Auckland is scheduled to depart at 8:55am.
Among the passengers bound for the Gold Coast were James Irwin and his parents, who also had tickets on the first aircraft to land at WSI — the 3pm return flight JQ362.
"It's so exciting, this is something that Western Sydney needed for so long," Mr Irwin told the ABC.
James Irwin and his parents were among the first passengers to fly out of Western Sydney International Airport. ( ABC News )
It took the trio 22 minutes to drive to the airport, leaving their car at the nearby parking station at a cost of $24 for the day, and then walking "three to four minutes to the terminal".
"It was a breeze along the Northern Road and the M12 where there is no tolls," he said.
"It just made it a complete breeze compared to the normal Sydney airport which is usually about $15 in tolls and about 55 minutes.
"The signage is great, it tells you which car park you need to go to and follow the sign and you land right where you need to be."
Three Jetstar flights used the new airport for the first time. ( ABC News: Tony Ibrahim )
The self described "plane nerd" recently travelled around the world going through about 12 airports.
He said WSI was "so easy", but admits it is early days.
"It was great, it was seamless. I just was excited by the whole process," he said.
"Just to go straight in and check in, it was all digital and then you walk straight through, scan your boarding pass and you're on, and I reckon you can probably get from the car to boarding in under 10 minutes."
Billions of dollars have been spent on upgrading surrounding roads to WSI, including interchanges and direct access via the new toll-free M12 motorway.
A light rail service from St Marys to WSI is not scheduled to open until late next year. However, there are buses and a free shuttle operating from St Marys train station.
Corinne Leslie and son, Ethan, flew to the Gold Coast and back. ( ABC News: Nick Dole )
It had been a goal for Corinne Leslie and her seven-year-old son, Ethan, to be on board the first flight.
She said the day had been "exhilarating", and very special to have shared the outgoing and return flights to the Gold Coast with her son who is obsessed with planes, adding that everything had "flowed really smoothly".
They live at Baulkham Hills and are about halfway between WSI and Sydney Airport.
"This [WSI] without a doubt is just easy. You don't have the volumes of traffic, there was plenty of parking, we pre-booked parking as well," Ms Leslie said.
Ms Leslie said she would "100 per cent" going to use WSI, saying "it's something we will remember for the rest of our lives".
Ms Leslie says the opening is "something we will remember for the rest of our lives". ( ABC News )
First at the check in bays about 8am was Mark Igantiv from Queensland, who timed his road trip to Melbourne with the opening.
"I drove here to take the flight back and then fly down again," Mr Igantiv said.
"It's very rare, it's rarer than the solar eclipse to be on the first flight from the new airport it's pretty unusual, especially in Australia."
Mark Igantiv scheduled his road trip to Melbourne to coincide with the opening of WSI. ( ABC News )
Mr Igantiv said it had been a memorable day with the flight path providing a different outlook.
"We came over the Blue Mountains so we see a real good view of Western Sydney, normally from the other airport you go over the ocean … this time you see all the different sides of Sydney."
Apart from taking a long time to depart from the Gold Coast, he said there were no glitches.
Jetstar and Air New Zealand are among the seven carriers signed up to operate out of WSI.
Flights to Singapore are scheduled to start soon, with other destinations including Nandi in Fiji, Ho Chi Min City and Doha to follow.
