WarBird Flight is an independent booking service, not affiliated with United Airlines. Fares are recorded lows for the route across carriers; the agent quotes United Airlines's current fare on the call.

SJC → ATH · about 13h 39m nonstop · 6,798 miles · 4 airlines
Fares shown are recorded lows. An agent confirms today's live price on the call.
United Airlines serves SJC–ATH through its hub network, usually with one connection. The nonstop flight time is about 13h 39m.
Fare classes available: Basic Economy, Economy, Economy Plus, Premium Plus / First / Polaris. United has no change fees on Economy and above for travel within the US or between the US and Mexico, the Caribbean, or international destinations originating in the US. Fare difference applies.
Recorded lows on SJC–ATH start at $1,077 one-way. That figure comes from cached search data and moves with demand, so treat it as a benchmark for what a good price looks like rather than a guaranteed fare.
Delta Air Lines and United Airlines both operate hubs at one end of this route, so nonstop or single-connection service is usually available, along with Southwest Airlines and Alaska Airlines. Our agents can book any of them and compare fare classes side by side.
Covering 6,798 miles, the flight runs around 13h 39m nonstop. On sectors this long, one-stop itineraries through a hub are often priced well below the nonstop and add only a few hours; the agent will show both.
Lowest United Airlines fares seen in recent searches. Recorded lows, not live quotes.
Lowest recorded one-way fare per month. Green marks the cheapest month.
For long-haul travel, mid-January to March and the shoulder months of October and November usually bring the lowest fares; June through August and the December holidays cost the most.
On this specific route our fare history shows September as the cheapest month and October as the most expensive, a spread of $407 between the two.
Midweek travel almost always beats weekends on price here. If your dates are flexible by a day or two, tell the agent; shifting a Friday departure to Thursday or a Sunday return to Monday is the single most reliable way to cut the fare.
For international travel, booking two to five months ahead usually gets the best fares; inside three weeks, prices rise sharply. Peak-season travel in summer and over the December holidays should be booked as early as possible.
Fares from a neighboring airport are sometimes far lower than the drive is long. Agents quote all of these on one call.
Licensed agents at our partner agency handle these by phone, 24/7. No charge for a quote.
United Airlines usually connects through one of its hubs on this route. The agent will compare nonstop options on other carriers.
The lowest one-way fare we have recorded recently is $1,077. Fares change daily; call (708) 866-8751 for today's price.
A nonstop flight takes about 13h 39m to cover 6,798 miles. Connecting itineraries add two to five hours depending on the layover.
Delta Air Lines, United Airlines, Southwest Airlines, and Alaska Airlines are the carriers most likely to serve this route. We book all of them.
Yes. Licensed agents at our partner agency book United and United Express flights in every cabin and can compare them with other carriers on your route.
On most domestic routes, no. Only a personal item is included. Economy fares include a full-size carry-on.