Houston → Washington flights

Typical fares run $113–$173 — budget around $113 if you're flexible

Key takeaways

• Median fare of $113 was also the observed floor across all snapshots
• Bottom quartile (p25) sat at $113, meaning a meaningful share of fares matched the low end
• Top quartile (p75) reached $156, with the overall high hitting $173
• 53% spread between low and high signals real price variability — timing and flexibility matter here
• Sample size of 12 days is thin, so treat these figures as a directional read, not a precise forecast

30-day price trend

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

The full picture

The IAH–DCA route shows a fairly wide price range for a short-haul domestic trip: fares bottomed out at $113 and topped out at $173 across the snapshots we captured, a 53% spread from low to high. Notably, the median fare matched the low end at $113, which suggests that cheaper fares were fairly common during this window rather than rare outliers — but the p75 figure of $156 shows that a meaningful chunk of snapshots still landed well above the median, so there's no guarantee you'll see the floor price on any given search.

With only 12 data points, we can't responsibly point to specific booking windows or dates within this data that reliably soften prices — the sample simply isn't large enough to isolate a pattern with confidence. What we can say is that the gap between the median ($113) and the high ($173) is wide enough that it's worth checking fares more than once rather than booking the first price you see. If you check and the quote is near $113–$130, that aligns with the bottom half of what we observed; anything pushing past $156 is in the upper quartile of this sample and may be worth waiting on or comparing against nearby dates.

We didn't have enough visibility into carrier-level data to identify a dominant airline or flag any carrier-specific pricing behavior on this route, so we're not making claims there. The honest caveat: with a sample of just 12 snapshots, this read is more of a rough price orientation than a statistically robust forecast — treat the $113–$173 range as a reasonable expectation window, not a guarantee, and verify current fares before booking.

Ready to look at fares?

• When to book
  Houston → Washington
  AI-authored booking-window guide
  Open →
• Price history
  Houston → Washington
  30-day daily price snapshots
  Open →
• Where to stay
  Best hotels in Washington DC
  🇺🇸 USA
  Open →
• When to book
  Houston → Mexico City
  Same origin, different destination
  Open →
• Read
  The Best Jazz Clubs in New Orleans: A Night Music Guide
  USA · 7 min
  Open →