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Boston to Paris fares show a $249 median over 30 days of tracking, with the lowest quartile at $235–$277 — watch this window before booking.
Written from this route's 30-day price index (30 daily samples). Article last regenerated Oct 17, 2026.
See full numbers and stats on the BOS → CDG price history page.
Over the 30-day window we tracked, BOS–CDG fares held a median of $249, with a floor of $234 and a ceiling of $306. That's a 31% spread — enough to reward some flexibility, but not so wide that this route is wildly volatile. If you see a fare in the $235–$249 range, you're in the bottom quartile of what we observed, which is a reasonable signal to book rather than wait.
Our data doesn't capture the full 6-12 month booking horizon, just a 30-day rolling snapshot of cached fares, so we can't make strong claims about how far in advance to book. What we can say is that the bulk of fares clustered between $235 and $277 (the p25-p75 range), meaning roughly half of the days we sampled offered fares in that band. Prices above $277 were the exception rather than the rule during this period, so if you're quoted something near $300, it's worth checking back or trying alternate dates.
We don't have reliable carrier or day-of-week breakdowns in this dataset to say whether certain airlines or departure days consistently underprice others on this route — so we won't speculate there. The honest takeaway: this is a moderately stable route where $249 is a fair target price, $235 is a strong deal, and anything approaching $300 is on the expensive end of what we've seen. Keep in mind this reflects a single month of snapshots, not a full seasonal cycle, so prices could shift with holidays or summer peak travel that falls outside our sample.
Why we regenerated this article: Price spread tightened by 19 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 Oct 17, 2026. Fares shift continuously — confirm at booking.