How to use the FlightCast Inventory Planner, Forecasting, and check VAST Fill Rates

How to Read and Use the Inventory Planner in FlightCast

1. Open the Inventory Planner to forecast available ad inventory 0:00

• The Inventory Planner shows:
• How many ad impressions you’re likely to get
• How many impressions are already booked or sold
• How your programmatic fill rate is performing
• Use it to understand how much inventory you still have available to sell.

2. Review the overall forecast for the next 7 days 0:18

• The example view is set to the next seven days.
• In the sample forecast:
• About 2.5 million total ad impressions are projected
• About 200,000 are already committed to current sponsors/campaigns
• About 2.3 million impressions remain available to sell
• This works out to roughly a 7.6% sell-through.

3. Drill into inventory by country 0:42

• Scroll down to see the forecast broken out by country.
• For example, in the United States:
• About 2.48 million impressions are projected
• About 147,000 are expected to be delivered
• About 42,000 are already booked
• The remaining inventory is what you should consider selling to additional sponsors
• This helps identify where your biggest inventory opportunities are.

4. Check programmatic fill rate to see how often ads are actually served 1:08

• After sponsor and campaign inventory, review the programmatic ads section.
• Fill rate shows how often an available ad opportunity actually got filled with a paid ad.
• In the example, the U.S. programmatic fill rate is 58%.
• That means ads were served in the U.S. about 58% of the times an opportunity existed.

5. Use the fill-rate data to spot under-monetized regions 1:51

• If you want to know whether you’re getting as many ads as possible, this screen helps identify weak spots.
• Look for countries with:
• High audience volume
• Low fill rates
• Those are the places where you may be leaving money on the table.

6. Add custom VAST tags to improve fill in specific markets 2:00

• FlightCast supports custom VAST tags from advertisers.
• If a country has strong audience volume but weak FlightCast ad fill, you can:
• Find an advertiser in that market
• Get their VAST tag
• Plug it into FlightCast
• This can increase fill rate and improve revenue in that region.

7. Ask FlightCast to help improve low-fill countries 2:27

• If you notice countries with low fill rates, let the FlightCast team know.
• They can try to build more advertiser relationships in those regions.
• This is the best way to understand and improve your inventory performance.

Updated on: 06/15/2026