August is the cheapest month to fly this route, with average fares around $251 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $266 | $237 | ||
| June 2026 | $296 | $237 | Peak | |
| July 2026 | $254 | $210 | ||
| August 2026 | $251 | $237 | Best |
Departing on Tuesday offers the lowest average fares at $259. Sunday departures are the most expensive at $292, a difference of $33.
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 Los Angeles to Boston is August, with average round-trip fares around $251. The lowest fare found in August is $237.
Tuesday departures are the cheapest, averaging $259 round trip. The most expensive day is Sunday at $292.
Based on current pricing trends, booking for August travel offers the best value. Avoid June if possible, as fares average $296 compared to $251 in the cheapest month. May is a solid middle-ground option at $266.
Flying in August instead of June can save you approximately $45 per round trip. The cheapest month averages $251 while the most expensive averages $296.
Airlines, flight times, price calendar, and more for Los Angeles to Boston
View LAX → BOS Details