August is the cheapest month to fly this route, with average fares around $994 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $996 | $932 | ||
| June 2026 | $1089 | $932 | Peak | |
| July 2026 | $1016 | $963 | ||
| August 2026 | $994 | $963 | Best |
Departing on Sunday offers the lowest average fares at $1002. Friday departures are the most expensive at $1097, a difference of $95.
The best time to fly is August. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Seattle to Amsterdam is August, with average round-trip fares around $994. The lowest fare found in August is $963.
Sunday departures are the cheapest, averaging $1002 round trip. The most expensive day is Friday at $1097.
Based on current pricing trends, booking for August travel offers the best value. Avoid June if possible, as fares average $1089 compared to $994 in the cheapest month. July is a solid middle-ground option at $1016.
Flying in August instead of June can save you approximately $95 per round trip. The cheapest month averages $994 while the most expensive averages $1089.
Airlines, flight times, price calendar, and more for Seattle to Amsterdam
View SEA → AMS Details