PreviewPal · Letter routes · Press · Start writing — it's free
How long does a letter take from San Francisco to Singapore?
Flight time: 16h 52m · Distance: 8,440 miles · With Premium: 8h 26m
On PreviewPal, a letter from San Francisco, United States to Singapore, Singapore flies the real 8,440-mile great-circle distance at 500 mph, so it lands in 16h 52m. Your penpal in Singapore can peek at every word the moment you seal it. They just can't reply until it lands.
The trip home takes the same 16h 52m: Singapore to San Francisco is the same distance both ways.
Questions
- Can my penpal in Singapore read the letter before it lands?
- Yes. They can open it and read every word while it's in the air, and watch it cross the map. The reply unlocks when it lands, 16h 52m after you send it.
- Is it faster with Premium?
- Premium letters fly twice as fast, so San Francisco to Singapore takes 8h 26m. Every flight takes at least a minute and never more than 72 hours.
- Is PreviewPal free? Do I need an app?
- Writing letters is free. There's nothing to install: PreviewPal works in the browser on any phone or laptop. Letters are sealed end to end, so only you and your penpal can read them.