Flight Price History

Seattle to Reykjavík · 30-day trend

Median fare $448 · 30-day low $323. Snapshots updated daily (last: Sep 25, 2026).

SEA → KEF · cheapest cached fare per day · last 23 days · ↑ 53%

$323 low$495 high

Median fare

$448

Across 23 daily snapshots

30-day low

$323

Cheapest seen

30-day high

$495

Most expensive seen

Now vs typical

+10%

Above typical — wait or flex

What this means

Each point on the chart above is the cheapest cached round-trip fare from Seattle (SEA) to Reykjavík (KEF) on that snapshot day, sourced nightly from our travel-data partner Travelpayouts.

The median is the typical asking price for this route across a rolling 30-day window — half of recent snapshots were cheaper, half more expensive. The low is what your fare-floor target should be if your dates are flexible; the high tells you what to walk away from.

Prices on this route swing meaningfully — the cheapest quarter of snapshots are at $371 or below, a 17% savings off median. Worth being patient or flexing dates by a few days.

Ready to book?

Cached prices give you the baseline. For your exact dates, search live fares — Aviasales checks every major OTA in one query.

Search SEA → KEF flights →Live prices on Aviasales →

See our best-time-to-book guide for SEA → KEF →Target price, booking window, weekday pattern.

Related travel pages

Data: 30-day rolling window of cheapest cached round-trip fares from Travelpayouts, snapshotted nightly. Actual fares for your specific dates and travel class will vary — we link to live search above for current pricing. Index last updated Sep 25, 2026.