Washington → Chicago flights

DCA–Chicago hovers near $117 — the spread is wide but sample is thin

Key takeaways

• Median fare is $117, with the bottom quartile (p25) at $112 — a reasonable target price to watch for.
• Spread is 44% between low ($93) and high ($134), wider than typical, signaling real day-to-day volatility on this route.
• Only 12 snapshots were sampled, so patterns here should be treated as directional, not definitive.
• The middle 50% of fares (p25–p75) fell between $112 and $122, a tighter band than the full range suggests.
• No dominant carrier was identifiable in this data, so we can't attribute price swings to a specific airline's pricing behavior.

30-day price trend

See full numbers and stats on the DCA → ORD price history page.

The full picture

The DCA–Chicago route shows a median fare of $117, but the 44% spread between the $93 low and $134 high tells us this isn't a route with a single predictable price point. Fares swing meaningfully even within a short sample window, which is common on short-to-medium-haul routes with multiple daily departures and competing carriers. The tighter p25–p75 band of $112–$122 is probably a more realistic planning range than the full low-high spread, since it reflects where most fares actually cluster rather than the outliers.

With only 12 days of snapshots, we can't confidently map out a booking-horizon curve — that typically requires 30+ days of data to distinguish real softening patterns from noise. What we can say is that fares at or below the $112 p25 mark represent good value relative to this sample, while anything above $122 is in the pricier upper quartile. Travelers with flexibility should treat $117 as a benchmark: if you see something notably below that, it's worth booking rather than waiting for a theoretical dip later.

We don't have enough visibility into carrier mix or day-of-week patterns in this dataset to make claims about specific airlines or departure days — the data doesn't show a dominant carrier, and 12 samples is too thin to isolate weekday effects reliably. The honest takeaway: this route has real price variability, but the sample size here means our confidence in any specific timing advice is limited. Treat the $112–$122 range as a useful target, and expand the data window before drawing firmer conclusions about seasonal or weekly trends.

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