Seattle → Reykjavík flights

Budget $375 for Seattle–Reykjavik, but $312 fares do appear

Key takeaways

• Median fare is $375, based on 22 daily snapshots of the cheapest cached fares on the SEA–KEF route.
• Bottom-quartile fares hit $312 — meaning roughly one in four observed prices landed at or below that level, so it's achievable but not the norm.
• The top quartile starts at $440, and the observed ceiling reached $480 — a 54% spread from low to high, which is wide enough to reward patience.
• A 54% price spread signals meaningful volatility on this route; fares are not locked in a tight band, so timing your purchase matters more than on low-spread corridors.
• No single dominant carrier is identifiable from the current data snapshot, so comparing across airlines — rather than defaulting to one — is worth the extra step.

30-day price trend

See full numbers and stats on the SEA → KEF price history page.

The full picture

Seattle to Reykjavik is a long transatlantic hop with relatively limited nonstop options, and the fare data reflects that tension: a $375 median is reasonable for the distance, but the 54% spread between the observed low ($312) and high ($480) tells you this is a route where timing genuinely moves the needle. The interquartile range — $312 to $440 — spans $128, meaning the middle half of all observed prices varied by more than a third. That's not a market where you can assume any given search will return something close to the median.

On routes with this level of volatility, the standard evidence-based guidance holds: fares for transatlantic itineraries tend to be most competitive in the 60–120 day booking window before departure, before last-minute scarcity pricing kicks in. If you're seeing prices above $440, you're in the top quartile of what this snapshot captured — that's a signal to wait or widen your departure-date flexibility rather than commit. Conversely, fares near or below $340 are in the bottom half of the observed range and worth booking on sight if your dates work.

One honest caveat: this analysis draws on 22 daily snapshots, which is a reasonable but not large sample. Seasonal demand — particularly the spike in summer travel to Iceland — can push fares well above these figures for peak departure weeks, and the data window may not fully capture that seasonality. Treat the $375 median as a useful anchor, not a guarantee of what you'll find on any given search day.

Ready to look at fares?

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