Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Sebastian (average of $415). Flying from Washington, D.C. Dulles Intl Airport to San Sebastian in June is currently the most expensive (average of $921). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Iberia | Cheapest$566 | Average$762 | FlexibilityNo cancel fee | On-time77% |