San Francisco → London flights
SFO to London runs a $324 median fare over 30 days, with the cheapest quarter of fares under $301 — watch the range, it's wide.
Median SFO–LHR fare is $324 — bottom quartile sits near $301
Key takeaways
- $324 median fare across 30 daily snapshots
- Bottom quartile (p25: $301) is tightly clustered, a good reference point for a solid deal
- Top quartile jumps to $332+, and the high end reaches $423
- Observed low of $229 shows real discounts surface occasionally, not routinely
- 85% spread between low and high — this route's pricing is volatile, not stable
30-day price trend
See full numbers and stats on the SFO → LHR price history page.
The full picture
The $324 median on SFO–LHR sits close to the p25 mark of $301, which tells us a meaningful share of fares cluster in the low-$300s rather than drifting evenly across the full range. That's a useful anchor: fares near or under $310 represent the better end of what's actually available, not a rare fluke. The $423 high and $229 low, however, show this route can swing hard in either direction — an 85% spread is wide, and it means a single snapshot in time can be misleading about what 'normal' pricing looks like here.
We don't have booking-date (days-to-departure) data in this sample — only 30 daily snapshots of cached fares — so we can't responsibly say when in the booking window prices soften. What we can say is that the tight band between p25 ($301) and p75 ($332) suggests that most days, fares hover in a fairly narrow $30 window, with the $229 and $423 extremes being outliers rather than the typical experience. If you see something at or below $310, that's consistent with the cheaper quartile of observed fares; anything pushing past $350 is trending toward the expensive side of this route's recent history.
No carrier or day-of-week pattern is visible in this dataset, so we won't speculate on which airline or weekday performs better — that would be guessing beyond the evidence. The honest caveat: 30 snapshots is a decent sample, but it's a snapshot of cached fares over one month, not a multi-season view, so seasonal effects (holidays, summer peak) aren't captured here. Treat these numbers as a recent-trend signal, not a year-round guarantee.
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Related travel pages
Why we regenerated this article: Top quartile ↓ 14% ($384 → $332). 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 Oct 10, 2026. Fares shift continuously — confirm at booking.