How to Find the Cheapest First Class Flights on US Routes
Briefly

"At the right price, the domestic transcontinental flights that operate are really sophisticated. Between New York City and LA, you can expect top meals, some good wines, often lounge access, and generally fully flat beds with nice bedding and amenity kits."
"US airlines that offer premium cabins on domestic flights each have their own take on the 'first class' experience, whether they call it first, business, or something in between."
Read at Conde Nast Traveler
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