American, Delta and United. They are the three major US airlines, which together operate approximately 3,000 aircraft.

So they need to know a thing or two about flying people from A to B.

But how much they know is being put to the test by the travel site's experts The points manwho film their experiences flying economy class on American, Delta and United on perhaps the most prestigious domestic US route: New York JFK to Los Angeles.

The images are fascinating, with negatives such as doorbells going unanswered and 'sadly disappointing food' to a chair with 'nice padding' and a 'soft and warm blanket'.

Read on for the full statements.

DELTA AIRLINES

Putting Delta Air Lines to the Test is Editor at Large Nicky Kelvinwho flies a state-of-the-art Airbus A330-900neo for $305.

He told the Mail: 'Check-in was easy and smooth and once on board I found the seat to be very comfortable and supportive, with nice padding.

'Legroom was good and there was a large entertainment screen on board, larger than you would expect from a budget product.'

Is there anything else on the 'first impressions' list?

“There were multiple charging ports,” Nicky added.

Once the flight was underway, Nicky was given a blanket “which was soft and warm” and headphones, although he recommends a Bluetooth dongle so you can use your own.

He continued: 'There was a wide choice of complimentary drinks available – water, tea, coffee and fruit juices – along with spirits and beer. I also got a free snack. There was no substantial free food available during the flight, so I went for a snack box for $12 [£9.50]which made for a hearty little meal.”

Final verdict? Nicky approved Delta's economy offer.

He said: 'Overall I was very impressed with the flight, especially the range of free drinks and snacks, as well as full size drinks. The meals you could buy on board were also fresh and tasty.'

UNITED AIRLINES

Mark Ramos was assigned to put United Airlines to the test.

He paid $254 for his Boeing 777 ticket to the City of Angels.

His experience? A bit of a mixed bag.

He told the Mail he checked in via the United app, 'which saved a lot of time at the airport', and then got into trouble.

He revealed: 'I boarded a full flight and sat between two people. It was quite tight. The seat had no leg room or extra room to stretch your legs. During the flight I was given a blanket, but no pillow.'

Entertainment screen? Only a tablet/phone holder and two charging ports, Mark noted – but no USB port.

“On the whole, very basic accommodation,” he said.

On the food front, Mark received a free coffee and speculoos biscuit, noting that 'United also offers edibles, from snack boxes to hot dishes from their bistro with many options'.

There were no serious complaints about the service, but when Mark rang the bell it went unanswered.

AMERICAN SOCIETY

Testing American's ability was senior marketing manager Liam Spencer.

He paid $428 to fly economy in an Airbus A321T.

The advantages?

He told the Mail: 'Check-in was clear, clean and pleasant. The self-service checkouts were quick and easy to use.

'In the cabin, the seats immediately felt like a significant step up from those of low-cost airlines such as Spirit or Ryanair. The chair is large and comfortable, with an adjustable headrest.

'There was a fair amount of recline with plenty of legroom and a handy charging port attached to the seat and tray.

'In addition, although small, there was an entertainment screen on board, always a nice bonus when flying economy. The screen also has a headphone jack and a port to charge your phone.

'The flight had a free dining service, which became available 40 minutes into the flight – always nice to have free food in economy class.

'I wasn't given a pillow or blanket, but I was given headphones for the onboard entertainment.'

Liam concluded it was a 'very good flight' – apart from his dining experience. “The food was unfortunately disappointing and dry,” the travel guru complained.

For more information from The Points Guy, visit thepointsguy.com. Click to see the original American vs Delta vs United video here.

London to Sydney is a very long way – over 10,000 miles. And a popular airline for the epic 22-hour journey is Australia’s national carrier, Qantas.

It is deploying an aviation titan on this route – the A380 – and offering passengers a choice of four classes: economy, premium economy, business and first class.

Should passengers be afraid of flying economy? A travel expert answers this question in a fascinating video.

The points man Nicky Kelvin films his experience in this class on a Qantas A380 between Sydney and Singapore stopover – and offers an enchanting bonus. He also puts the other three classes to the test, revealing the difference in comfort between a £1,181 ticket at the back of the plane, a £2,992 premium economy offering, a £5,590 business class seat and a £5,590 first class seat 10,000. berth.

Read on for more…

ECONOMY – 3-4-3 configuration. Sydney to Singapore – fares from around £467 for this leg, £1,181 for London to Sydney

Points Guy editor-in-chief Nicky is ‘really impressed’ with his ‘spacious’ economy berth and praises the seat’s padding and adjustable headrest in the video. There’s also “decent” legroom, he notes, along with an IFE screen and a universal socket for charging devices.

He tells MailOnline Travel: ‘This is one of the most comfortable economy seats I’ve tried, with a particularly deep backrest.

‘The snacks were plentiful, such as the large bag of goodies that came with the drinks service, and the large Magnum ice cream was a godsend, but the meal itself was a bit on the small side.

“The headphones were possibly the best I’ve experienced in economics.”

PREMIUM ECONOMY – 2-3-2 configuration. Singapore to Sydney – fares from around £1,055 for this leg, £2,992 for London to Sydney

‘Crisp and beautiful’ is how Nicky describes his premium economy Qantas berth in the video, saying it has a footrest, universal socket, USB charging port and a ‘super chic’ light in the shoulder of the seat.

He tells MailOnline Travel: ‘The seats were chic and comfortable, but a big tip would be to get a window seat, which benefits from the storage bins and extra space between the seat and the torso.

‘I was sitting aisle on this very busy flight.

‘The food was exceptionally good. I loved the hot, tasty and generous portion of beef noodles. That meal, along with the pillow and blanket, was more like what you might find elsewhere in business class.”

BUSINESS CLASS – 1-2-1 configuration. London to Singapore – fares from £4,488 for this leg, £5,590 for London to Sydney

Nicky is very pleased with his ‘super comfortable’ lie-flat business class seat, which in the video, he notes, has a massage function and a ‘large and crystal clear IFE screen’.

The business class fare also gives access to an onboard lounge area, which Yorkshire-born Nicky says is an ‘incredible benefit’.

He tells MailOnline Travel: ‘On the A380, business class access to the lounge area on board the aircraft is an incredible advantage. And I absolutely loved having three crew members on this flight who came from Leeds and York, they brought a real sense of home and provided exceptional service.

‘The food was fantastic and I was lucky enough to take advantage of premium champagne as we had run out of business champagne.

‘One downside was how narrow the footwell was when you were trying to sleep.’

FIRST CLASS – 1-1-1 configuration. Singapore to London – fares from £6,575 for this leg, £10,063 for London to Sydney

“It’s wow,” Nicky says in the video after sitting in his first-class seat. He describes it as “huge” and reveals that it “kind of hugs you when you’re in it.”

The berth comes with all kinds of extras, including a perch for ‘buddy dining’, an ‘incredibly large tray table’ and ‘fairly chic’ pajamas.

Nicky is offered Pommery champagne and a caviar snack before he takes off – and once in the air he reveals the almost mind-boggling dining options: a choice of five starters, four main courses, ‘all kinds of different desserts’ and a ‘very extensive breakfast menu’.

Also available are cocktails, wines and champagnes.

Nicky tells MailOnline Travel: ‘The premier lounges in both Sydney and Singapore are exceptional with an incredible food offering.

‘The food on board was also excellent.

‘The pajamas and amenities were lovely, but the real standout feature of Qantas first class is the bed.

‘With a memory foam mattress, two or four inches thick, and cozy, soft pillows and duvets, I was in for a fantastic night’s sleep. On a 14-hour overnight flight this was very important to me and Qantas’ offering far exceeds many others.’

Click to watch the full original video here. For more information from The Points Guy, visit thepointsguy.com/uk-travel.