Flight Price History

Boston to Washington · 30-day trend

Median fare $56 · 30-day low $55. Snapshots updated daily (last: Oct 10, 2026).

BOS → DCA · cheapest cached fare per day · last 13 days · ↑ 48%

$55 low$83 high

Median fare

$56

Across 13 daily snapshots

30-day low

$55

Cheapest seen

30-day high

$83

Most expensive seen

Now vs typical

+48%

Above typical — wait or flex

What this means

Each point on the chart above is the cheapest cached round-trip fare from Boston (BOS) to Washington (DCA) on that snapshot day, sourced nightly from our travel-data partner Travelpayouts.

The median is the typical asking price for this route across a rolling 30-day window — half of recent snapshots were cheaper, half more expensive. The low is what your fare-floor target should be if your dates are flexible; the high tells you what to walk away from.

Ready to book?

Cached prices give you the baseline. For your exact dates, search live fares — Aviasales checks every major OTA in one query.

Search BOS → DCA flights →Live prices on Aviasales →

See our best-time-to-book guide for BOS → DCA →Target price, booking window, weekday pattern.

Related travel pages

Data: 30-day rolling window of cheapest cached round-trip fares from Travelpayouts, snapshotted nightly. Actual fares for your specific dates and travel class will vary — we link to live search above for current pricing. Index last updated Oct 10, 2026.