A round-trip fare on Delta and United for $642 makes Shanghai more affordable. (Peter Parks / AFP/Getty Images)

Here’s an airfare deal to one of the world’s most exciting cities at a price that will keep your budget calm: Delta and United are offering a round-trip fare from LAX to Shanghai for $647, including all taxes and fees.

It comes with caveats, including a purchase-by date of Friday. It is for travel between Feb. 25 and March 31 and is subject to availability.

Info: Delta, (800) 221-1212; United, (800) 864-8331.

Source: Airfarewatchdog