Flight Deals from Washington Dulles Airport to San Jose from $143

Prices peak mid-December and late March, while early January and November offer the lowest fares for flights from Washington to San Jose.

When planning your flights from Washington to San Jose, anticipate higher prices during peak seasons, particularly mid-December, where prices surge to their highest at over $900. The most pronounced expensive months are late March and June, where prices can reach around $600. Conversely, consider traveling in early January or early November, where prices can dip significantly to below $400, providing an opportunity for budget-conscious travelers. The transition into high season is abrupt around mid-March, while low prices tend to emerge in late October, making this timeframe a cost-effective choice for your travel.

Book your tickets from Washington to San Jose 49 to 83 days in advance for the best price; avoid waiting until 43 days or less before departure to prevent higher costs.

When planning your trip from Washington to San Jose, the best time to buy tickets is between 49 to 83 days before departure, with the lowest prices around 63 days at approximately $422. Booking earlier can lead to prices as high as $507. If you don't book until around 43 days before departure, anticipate volatility and increasing prices, peaking near departure at about $466. Therefore, if your journey is within 43 days, do not hesitate to purchase your tickets, as delaying can lead to significantly higher costs.