diff --git a/src/lib/utils/getDistanceBetween.ts b/src/lib/utils/getDistanceBetween.ts
new file mode 100644
index 0000000..64335a3
--- /dev/null
+++ b/src/lib/utils/getDistanceBetween.ts
@@ -0,0 +1,107 @@
+import { Sector } from "../classes/managers/LocationManager";
+import { Planet } from "../classes/managers/PlanetManager";
+import SystemManager from "../classes/managers/SystemManager";
+
+const PLANET_TO_SYSTEM = 120;
+const BETWEEN_PLANETS = 300;
+const BETWEEN_SYSTEMS = 1000;
+const BETWEEN_SECTORS = 10000;
+const BETWEEN_GALAXIES = 100000;
+
+export default function getDistanceBetween(a: Planet | SystemManager | Sector, b: Planet | SystemManager | Sector) {
+    if("fields" in a) { // a is planet
+        // b is planet
+        if("fields" in b) {
+            // same planet
+            if(a._id.equals(b._id)) return 0;
+            // same system
+            if(a.system.data._id.equals(b.system.data._id)) return BETWEEN_PLANETS;
+            // same sector
+            if(a.system.data.sector._id.equals(b.system.data.sector._id)) return BETWEEN_PLANETS + BETWEEN_SYSTEMS;
+            // same galaxy
+            if(a.system.data.sector.galaxy._id.equals(b.system.data.sector.galaxy._id)) return BETWEEN_PLANETS + BETWEEN_SYSTEMS + BETWEEN_SECTORS;
+            // different galaxy
+            return BETWEEN_PLANETS + BETWEEN_SYSTEMS + BETWEEN_SECTORS + BETWEEN_GALAXIES;
+        }
+        // b is system
+        else if("planets" in b) {
+            // same system
+            if(a.system.data._id.equals(b.data._id)) return PLANET_TO_SYSTEM;
+            // same sector
+            if(a.system.data.sector._id.equals(b.data.sector._id)) return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS;
+            // same galaxy
+            if(a.system.data.sector.galaxy._id.equals(b.data.sector.galaxy._id)) return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS + BETWEEN_SECTORS;
+            // different galaxy
+            return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS + BETWEEN_SECTORS + BETWEEN_GALAXIES;
+        }
+        // b is sector
+        else {
+            // same sector
+            if(a.system.data.sector._id.equals(b._id)) return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS;
+            // same galaxy
+            if(a.system.data.sector.galaxy._id.equals(b.galaxy._id)) return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS + BETWEEN_SECTORS;
+            // different galaxy
+            return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS + BETWEEN_SECTORS + BETWEEN_GALAXIES;
+        }
+    } else if("planets" in a) { // a is system
+        // b is planet
+        if("fields" in b) {
+            // same system
+            if(a.data._id.equals(b.system.data._id)) return BETWEEN_PLANETS;
+            // same sector
+            if(a.data.sector._id.equals(b.system.data.sector._id)) return BETWEEN_PLANETS + BETWEEN_SYSTEMS;
+            // same galaxy
+            if(a.data.sector.galaxy._id.equals(b.system.data.sector.galaxy._id)) return BETWEEN_PLANETS + BETWEEN_SYSTEMS + BETWEEN_SECTORS;
+            // different galaxy
+            return BETWEEN_PLANETS + BETWEEN_SYSTEMS + BETWEEN_SECTORS + BETWEEN_GALAXIES;
+        }
+        // b is system
+        else if("planets" in b) {
+            // same system
+            if(a.data._id.equals(b.data._id)) return 0;
+            // same sector
+            if(a.data.sector._id.equals(b.data.sector._id)) return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS;
+            // same galaxy
+            if(a.data.sector.galaxy._id.equals(b.data.sector.galaxy._id)) return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS + BETWEEN_SECTORS;
+            // different galaxy
+            return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS + BETWEEN_SECTORS + BETWEEN_GALAXIES;
+        }
+        // b is sector
+        else {
+            // same sector
+            if(a.data.sector._id.equals(b._id)) return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS;
+            // same galaxy
+            if(a.data.sector.galaxy._id.equals(b.galaxy._id)) return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS + BETWEEN_SECTORS;
+            // different galaxy
+            return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS + BETWEEN_SECTORS + BETWEEN_GALAXIES;
+        }
+    } else { // a is sector
+        // b is planet
+        if("fields" in b) {
+            // same sector
+            if(a._id.equals(b.system.data.sector._id)) return BETWEEN_PLANETS + BETWEEN_SYSTEMS;
+            // same galaxy
+            if(a.galaxy._id.equals(b.system.data.sector.galaxy._id)) return BETWEEN_PLANETS + BETWEEN_SYSTEMS + BETWEEN_SECTORS;
+            // different galaxy
+            return BETWEEN_PLANETS + BETWEEN_SYSTEMS + BETWEEN_SECTORS + BETWEEN_GALAXIES;
+        }
+        // b is system
+        else if("planets" in b) {
+            // same sector
+            if(a._id.equals(b.data.sector._id)) return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS;
+            // same galaxy
+            if(a.galaxy._id.equals(b.data.sector.galaxy._id)) return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS + BETWEEN_SECTORS;
+            // different galaxy
+            return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS + BETWEEN_SECTORS + BETWEEN_GALAXIES;
+        }
+        // b is sector
+        else {
+            // same sector
+            if(a._id.equals(b._id)) return 0;
+            // same galaxy
+            if(a.galaxy._id.equals(b.galaxy._id)) return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS + BETWEEN_SECTORS;
+            // different galaxy
+            return PLANET_TO_SYSTEM + BETWEEN_SYSTEMS + BETWEEN_SECTORS + BETWEEN_GALAXIES;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/pages/api/fleet/send.ts b/src/pages/api/fleet/send.ts
index 8b540b8..7f72581 100644
--- a/src/pages/api/fleet/send.ts
+++ b/src/pages/api/fleet/send.ts
@@ -10,6 +10,7 @@ import MissionType from "../../../types/MissionType";
 import { getAllResources } from "../../../lib/db/resources";
 import FleetManager from "../../../lib/classes/managers/FleetManager";
 import SystemManager from "../../../lib/classes/managers/SystemManager";
+import getDistanceBetween from "../../../lib/utils/getDistanceBetween";
 
 export const POST: APIRoute = async({ request }) => {
     const response = await validateAccessToken(request);
@@ -74,12 +75,14 @@ export const POST: APIRoute = async({ request }) => {
         dest = checkDestination.planetOrSystem;
     }
 
+    const flightTime = getDistanceBetween(source, dest);
+
     const fleetManager = new FleetManager(
         new ObjectId(),
         source,
         dest,
         new Date(),
-        new Date(Date.now() + 1000 * 30), //TODO: calculate time based on distance
+        new Date(Date.now() + 1000 * flightTime),
         false,
         body.mission,
         body.ships,