Best Time to Book

San Francisco → Bangkok flights

Median SFO–Bangkok fare over 30 days is $373; watch for dips toward $342, the bottom-quartile mark, before booking.

SFO–Bangkok fares hover near $373 — bottom quartile hits $342

Key takeaways

$373 median fare across 30 daily snapshots — a reasonable benchmark for this route
Bottom quartile fares sit at $342 or lower, worth waiting for if your dates are flexible
Prices ranged from a low of $272 to a high of $409, a 50% spread — meaningfully wide
Top quartile fares climb to $374 and up, so most days land in a fairly tight middle band above that low
Only one low outlier ($272) stands out — treat it as an opportunity, not the norm

30-day price trend

SFO → BKK · cheapest cached fare per day · last 30 days · ↓ 9%

$272 low$427 high

See full numbers and stats on the SFO → BKK price history page.

The full picture

Over the 30-day snapshot window, SFO–Bangkok fares showed real variability: a median of $373, but a spread of 50% between the $272 low and $409 high. That's a wide enough range to justify some patience — the bottom quartile of observed fares ($342 or below) represents a meaningful discount versus the median, and it's worth checking prices across multiple days rather than booking on the first fare you see.

We don't have booking-horizon data (i.e., days-before-departure) in this sample — only 30 daily snapshots of cached fares — so we can't say definitively when in the booking window prices soften. What we can say is that the fare distribution itself has enough spread that timing your search across a couple of weeks, rather than a single session, gives you a real shot at landing near the p25 mark instead of the median or higher.

No dominant carrier or day-of-week pattern is visible in this data, so we can't responsibly claim one exists. The 50% spread is on the higher end for a long-haul route like this, suggesting either fare-class volatility or a mix of routing/carrier options feeding the cache — but without carrier-level detail, that's an inference, not a fact. The honest takeaway: $373 is a fair reference point, sub-$350 is a good deal, and anything near $272 was likely a short-lived anomaly rather than a repeatable target.

Ready to look at fares?

Search SFO → BKK on Aviasales →See the price history →

Related travel pages

Why we regenerated this article: Price spread widened by 28 points. We only rewrite when the underlying price index actually moves — stable weeks keep the previous take.

AI-authored from this route's 30-day price index. Article last regenerated Sep 19, 2026. Fares shift continuously — confirm at booking.