August is the cheapest month to fly this route, with average fares around $889 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $1012 | $868 | Peak | |
| June 2026 | $985 | $868 | ||
| July 2026 | $944 | $880 | ||
| August 2026 | $889 | $880 | Best |
Departing on Tuesday offers the lowest average fares at $914. Friday departures are the most expensive at $1065, a difference of $151.
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 Washington DC to Paris is August, with average round-trip fares around $889. The lowest fare found in August is $880.
Tuesday departures are the cheapest, averaging $914 round trip. The most expensive day is Friday at $1065.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $1012 compared to $889 in the cheapest month. June is a solid middle-ground option at $985.
Flying in August instead of May can save you approximately $123 per round trip. The cheapest month averages $889 while the most expensive averages $1012.
Airlines, flight times, price calendar, and more for Washington DC to Paris
View IAD → CDG Details