Washington → Dublin flights

Target $334–$372 for Washington–Dublin and book early

Key takeaways

• Median fare is $372 across 30 daily snapshots of the cheapest available fares on this route.
• Bottom 25% of fares came in at $334 or less — a credible target if you have flexibility and lead time.
• The spread is wide: $277 low to $584 high (111% spread), meaning timing and flexibility matter significantly on this route.
• Fares above $418 (the 75th percentile) suggest you're catching the route at a high point — worth waiting or adjusting dates if possible.
• The $277 floor is real but rare — treat it as a lucky outcome, not a reliable planning baseline.

30-day price trend

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

The full picture

Washington Dulles–Dublin fares in our 30-day snapshot window show a median of $372, with a middle 50% range of $334 to $418. That $84 interquartile band is reasonably tight as transatlantic routes go, but the full observed range — $277 to $584 — tells a more important story: this route has an 111% spread, meaning fares can more than double depending on when you look and how far out the departure sits. If you're planning a trip to Dublin from the DC area, calibrate your expectations around the $334–$418 corridor and treat anything below $334 as a genuine win.

On transatlantic routes of this length, fares historically soften in two windows: roughly 3–6 months before departure for peak summer travel, and 4–8 weeks out for shoulder-season travel when seats remain unsold. Our data doesn't tag specific departure dates, so we can't confirm exactly where in that horizon these low fares were captured — but the presence of fares at $277 suggests the bottom end is achievable with meaningful lead time or travel during lower-demand periods. Fares clustering above $418 are consistent with late booking or high-demand departure windows, not a route that's just expensive by nature.

No dominant carrier is identifiable from this dataset, so we can't credibly tell you one airline prices this route more aggressively than another. What the data does support: set a price alert around $350, consider $372 a fair market price if you need to commit, and treat $418-plus as a signal to look at alternate departure dates before confirming. One honest caveat — 30 snapshots reflect cached lowest fares at the moment of capture, not a guarantee of availability. The $277 low, in particular, may have reflected a flash sale or limited-seat promotional fare that cleared quickly.

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• When to book
  Washington → Dublin
  AI-authored booking-window guide
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• Price history
  Washington → Dublin
  30-day daily price snapshots
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