In my limited experience I cannot stress enough how much I prefer small regional airports.

Walk in, bags checked and through security in 5 minutes, walk a short distance through an area that’s not crowded and not full of shops, and be seated near the gate with a coffee a few minutes later. After a short wait, because you don’t need to get there an hour or more early, walk across a bit of open tarmac to a plane that’s not bursting at the seams, then take off after hardly any taxiing. So good.

Portland, OR is easy and has some nice carpet

Tampa International Airport

I give thanks every time we land at home. Our airport is really awesome. Good layout, beautiful, long security line usually but otherwise so good.

https://news.tampaairport.com/

My old home airport, Berlin-Tegel, was wonderful. Only 50m from the entrance to the plane. Now they closed and I have to use that abomination in Schönefeld.

Otherwise, Singapore-Changi deserves all the praise. Tons of food, monorails to everywhere (except that one cheap terminal), gigantic shopping mall, orchids, immigration without being interviewed by some stupid agent, check-in for Singapore Airlines even possible at the wrong terminal.

My favorite ones are:

Singapore - Beautiful, plenty to do and explore, and great lounges in general.
Istanbul - The Turkish Airlines lounge is among the best I’ve ever visited. A bit crowded though.
Amsterdam - Lots to do, efficient design, and fun to explore.
Copenhagen - Very efficient design

Honorable mention: Aberdeen. Small, simple, and with a nice pub. Could’ve used a better eatery, though.

No

Madeira is pretty cool. The runway is on stilts, the approach is tricky and requires training, the cafe has a big balcony so you can watch the pilots do a tricky landing on a stilted runway with a beer.

Doha and Bengaluru

Hollywood Burbank Airport

Its the only airport I’ve ever flown in or out of that lets you board an deplane from both the front and back doors on a 737.

Baggage claim is actually outdoors! You get your bag and are standing about 30 feet from the arrivals pickup road.

Its a fun small airport with a prime location.

Denver on a slow day, which is rare, and only for the weird airport lore, gargoyles and also Blucifer, the demon mustang with big ole blue balls and a huge asshole. The trams are really good, but everything else kinda sucks.

Kansas City International Airport is now up there as one of the best! In my local opinion.

Denver has quite a nice one. Or did last time I was through there, which to be fair was like 2002.