Great sale from the West Coast to Greece on full service carriers. Full service carriers include baggage, meals, and in-flight entertainment. Fares start at $512 all-in.
Select dates in May and June
Great availability starting September to December
Flight availability from; Phoenix, Salt Lake, Seattle, Portland, San Jose
These flights are heavily discounted for Summer, Labor Day, and Thanksgiving. Generally you can expect to pay $700+ from the West Coast to Greece on full service carriers. Flight deals are available on Star Alliance and Sky Team carriers.
I recommend searching for pricing and dates on Google Flights first. Once you find your preferred dates, continue to the carrier’s site for booking. Remember, you have 24 hours to cancel any US originated flight so long as you book more than 7 days in advance. I would find a date and lock it in ASAP. Within the next 24 hours, check to see if you can make the other accommodations work.