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Dallas → Lisbon flights

DFW to Lisbon fares showed a flat $420 median across a 7-day sample — too little variation to recommend a booking window.

DFW–Lisbon fares held flat at $420 — no timing edge visible

Key takeaways

$420 was the price on every single snapshot — low, median, and high all identical.
0% spread means this sample shows zero fare movement, not a stable 'deal' price.
Only 7 days of data were captured — too thin a sample to call this a reliable baseline.
No day-of-week or carrier pattern is visible since the fare never changed.
Treat $420 as a rough reference point, not a target to time around.

30-day price trend

DFW → LIS · cheapest cached fare per day · last 7 days · → flat

$420 low$420 high

See full numbers and stats on the DFW → LIS price history page.

The full picture

The data for this route is unusually flat: all seven snapshots returned the exact same fare of $420, with no variation between the low, median, and high. That kind of uniformity is atypical for airfare data and most likely reflects a thin or static sample — perhaps a single cached fare that didn't refresh across the tracking window — rather than genuine market stability.

Because there's no price movement to analyze, we can't responsibly point to a booking window where fares soften, nor can we identify day-of-week effects or carrier-driven pricing patterns. Normally a 30-day rolling window gives enough fare churn to spot early-bird versus last-minute dynamics; here, with only 7 samples and zero spread, there's simply no signal to extract beyond the single price point itself.

Our honest recommendation: use $420 as a loose reference for what this route has cost recently, but don't treat it as a floor or a deal threshold. If you're pricing out a Dallas-to-Lisbon trip, check current listings directly rather than waiting for a dip this dataset can't confirm exists. The caveat here is significant — a 7-day sample with 0% spread likely indicates a data-collection limitation rather than a genuinely static market, and any booking-timing advice built on top of it would be speculative.

Ready to look at fares?

Search DFW → LIS on Aviasales →See the price history →

Related travel pages

AI-authored from this route's 30-day price index. Article last regenerated Oct 10, 2026. Fares shift continuously — confirm at booking.