From one side of the world to the other: The 5 longest flights you can take

Etihad flies a Boeing 777-200LR from Abu Dhabi to Los Angeles. On average this flight lasts 16 hours and 35 minutes.

For more info about these flights, check out The 5 longest flights you can take.

Like the other Middle East airlines, the interior of Etihad's planes are quite lovely.

A round trip coach seat will cost you around $1,100 round-trip, though it varies a lot depending on when you want to fly.

Seat-back entertainment is common, and usually free, on most long-distance flights.

Spend a bit more, and you'll have a lot more room. These lay flat. Sleep those miles away.

Qantas will take you from Dallas to Sydney in, on average, 16 hours and 50 minutes.

Qantas uses the massive Airbus A380 for the flight.

I don't know about you, but if the seat next to me was empty, I'd be sprawled out on it.

This is Qantas's Premium Economy section, which looks nicer than some business class seating I've experienced.

The lush first class seating. These seats are at the front of the plane on the lower deck. The upper deck is mostly business class.

The main coach cabin on a Qantas A380-800 lower deck has a three-four-three layout. Even in Economy this is a pretty expensive ticket, around $1,866 round-trip.

The A380 has a range of 8,500 nautical miles or about 9,755 miles or 15,700km, which is why it's the plane of choice for two of the longest commercial flights.

Qantas will fly between Perth and London nonstop in 2018, which will likely be number three on this list, depending on when several other long haul routes (ahem) take off. This is a CG representation of what the coach section will look like.

Delta flies from Johannesburg to Atlanta in just under 17 hours. I've flown this route, and it's as long as it seems.

Delta uses a Boeing 777-200LR for this flight, with each GE90 engine putting out incredible amounts of thrust, between 110,000 and 115,300 pounds -- or between 489 and 513 kilonewtons.

Delta charges around $1,137 for a round-trip from Joburg to Atlanta and back. If 17 hours seems like a lot, I flew from Cape Town to LA, with this flight in the middle. That was nearly 24 hours in the air.

Emirates will get you from Auckland to Dubai in an estimated 17 hours, 25 minutes.

Emirates uses an A380 to get you there, with fares starting at $1,729 round-trip.

I've flown in an Emirates A380 on a different route. It was quite pleasant, though perhaps not as much as these two make it seem.

Emirates does business (shown here) and first class really well.

If you're paying for the big seats, you also get a walk-up bar, which is undeniably cool.

Emirates teamed up with Google to do a StreetView inside an A380.

Lasting just a little bit longer, is a Qatar fight from Auckland to Doha in about 17 hours, 40 minutes.

The longest flight arrives in Auckland for the first time to a traditional water cannon salute. The eastbound flight to Doha is slightly faster than the westbound flight to Auckland.

Qatar doesn't squeeze ten seats across in its Boeing 777-200LR in Economy, as some airlines do, opting for nine-across instead. 

The flight doesn't come cheap, with coach fares starting at around $2,486, round-trip.

Splurge on a business class seat, and you've got a lot more room.

You've also got some sizeable screens to watch many, many, many movies on.

A Qatar 777 above the clouds.

For more info about these flights, check out The 5 longest flights you can take.