June is the cheapest month to fly this route, with average fares around $201 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $211 | $159 | Peak | |
| June 2026 | $201 | $158 | Best | |
| July 2026 | $204 | $188 | ||
| August 2026 | $205 | $185 |
Departing on Friday offers the lowest average fares at $189. Monday departures are the most expensive at $217, a difference of $28.
The best time to fly is June. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Las Vegas to Portland is June, with average round-trip fares around $201. The lowest fare found in June is $158.
Friday departures are the cheapest, averaging $189 round trip. The most expensive day is Monday at $217.
Based on current pricing trends, booking for June travel offers the best value. Avoid May if possible, as fares average $211 compared to $201 in the cheapest month. August is a solid middle-ground option at $205.
Flying in June instead of May can save you approximately $10 per round trip. The cheapest month averages $201 while the most expensive averages $211.
Airlines, flight times, price calendar, and more for Las Vegas to Portland
View LAS → PDX Details