Seattle → Reykjavík flights

Target $365–$431 for Seattle–Reykjavik flights

Key takeaways

• Median fare is $431 across 30 daily snapshots of the cheapest available fares on this route.
• Bottom 25% of fares came in at $365 or less — that's the realistic target for a genuinely good deal.
• The price floor hit $324, but the ceiling reached $529, a 63% spread that signals meaningful volatility worth monitoring.
• The middle 50% of fares fell between $365 and $480 — budgeting anywhere in that band is consistent with what the market has been showing.
• No dominant carrier pattern was visible in this dataset, so comparing across airlines at booking time is especially worthwhile.

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-haul transatlantic route with limited nonstop options, and the fare data reflects that reality. Over 30 daily snapshots, the cheapest available fares ranged from $324 to $529 — a 63% spread that is wide enough to make timing genuinely consequential. The median of $431 is a reasonable baseline expectation, but the interquartile range ($365–$480) is where most shoppers will actually land. If you're seeing something below $365, that's a bottom-quartile fare and worth acting on.

On routes with this level of volatility, price tends to respond to two forces: how far out you're booking and how full the limited transatlantic inventory is. While this dataset doesn't capture a time-stamped booking horizon, the $100+ gap between the floor and the median strongly suggests that fares soften meaningfully when demand is lighter — likely outside peak summer travel windows and when booked well in advance of departure. Shoppers who set a fare alert at the $365 p25 threshold give themselves a credible target grounded in what the market has actually produced, rather than an optimistic guess.

No dominant carrier emerged clearly from this data, which matters practically: on a thin-frequency route like SEA–KEF, a single airline or a connecting-itinerary mix can drive prices up or down considerably depending on which carriers are running promotions or opening inventory. That makes cross-platform comparison — checking both direct booking sites and aggregators — more valuable here than on a route dominated by one operator.

One honest caveat: 30 snapshots capture a slice of market behavior, not a full seasonal cycle. Fares on this route can shift substantially based on the travel season, and prices observed in one period may not reflect what you'll find when booking for summer peak versus shoulder months.

Ready to look at fares?

• When to book
  Seattle → Reykjavík
  AI-authored booking-window guide
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• Price history
  Seattle → Reykjavík
  30-day daily price snapshots
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• Where to stay
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• When to book
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