August is the cheapest month to fly this route, with average fares around $236 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $246 | $220 | ||
| June 2026 | $268 | $230 | Peak | |
| July 2026 | $252 | $210 | ||
| August 2026 | $236 | $210 | Best |
Departing on Wednesday offers the lowest average fares at $228. Sunday departures are the most expensive at $289, a difference of $61.
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 Atlanta is August, with average round-trip fares around $236. The lowest fare found in August is $210.
Wednesday departures are the cheapest, averaging $228 round trip. The most expensive day is Sunday at $289.
Based on current pricing trends, booking for August travel offers the best value. Avoid June if possible, as fares average $268 compared to $236 in the cheapest month. July is a solid middle-ground option at $252.
Flying in August instead of June can save you approximately $32 per round trip. The cheapest month averages $236 while the most expensive averages $268.
Airlines, flight times, price calendar, and more for Seattle to Atlanta
View SEA → ATL Details