August is the cheapest month to fly this route, with average fares around $205 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $263 | $218 | Peak | |
| June 2026 | $227 | $190 | ||
| July 2026 | $216 | $190 | ||
| August 2026 | $205 | $190 | Best |
Departing on Tuesday offers the lowest average fares at $204. Sunday departures are the most expensive at $243, a difference of $39.
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 Detroit to Dallas is August, with average round-trip fares around $205. The lowest fare found in August is $190.
Tuesday departures are the cheapest, averaging $204 round trip. The most expensive day is Sunday at $243.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $263 compared to $205 in the cheapest month. June is a solid middle-ground option at $227.
Flying in August instead of May can save you approximately $58 per round trip. The cheapest month averages $205 while the most expensive averages $263.
Airlines, flight times, price calendar, and more for Detroit to Dallas
View DTW → DFW Details