diff --git a/src/Locations/ui/CompanyLocation.tsx b/src/Locations/ui/CompanyLocation.tsx
index 1d69b3ff7..ca8a0b442 100644
--- a/src/Locations/ui/CompanyLocation.tsx
+++ b/src/Locations/ui/CompanyLocation.tsx
@@ -57,7 +57,7 @@ export function CompanyLocation(props: IProps): React.ReactElement {
    */
   const currentPosition = jobTitle ? CompanyPositions[jobTitle] : null;
 
-  Player.location = companyNameAsLocationName(props.companyName);
+  Player.gotoLocation(companyNameAsLocationName(props.companyName));
 
   function startInfiltration(e: React.MouseEvent<HTMLElement>): void {
     if (!e.isTrusted) {
diff --git a/src/Locations/ui/TravelAgencyRoot.tsx b/src/Locations/ui/TravelAgencyRoot.tsx
index 97389b778..b2784559d 100644
--- a/src/Locations/ui/TravelAgencyRoot.tsx
+++ b/src/Locations/ui/TravelAgencyRoot.tsx
@@ -24,14 +24,12 @@ import Button from "@mui/material/Button";
 import { useRerender } from "../../ui/React/hooks";
 
 function travel(to: CityName): void {
-  const cost = CONSTANTS.TravelCost;
-  if (!Player.canAfford(cost)) {
+  if (!Player.travel(to)) {
     return;
   }
-
-  Player.loseMoney(cost, "other");
-  Player.travel(to);
-  if (!Settings.SuppressTravelConfirmation) dialogBoxCreate(`You are now in ${to}!`);
+  if (!Settings.SuppressTravelConfirmation) {
+    dialogBoxCreate(`You are now in ${to}!`);
+  }
   Router.toPage(Page.City);
 }
 
@@ -41,8 +39,7 @@ export function TravelAgencyRoot(): React.ReactElement {
   useRerender(1000);
 
   function startTravel(city: CityName): void {
-    const cost = CONSTANTS.TravelCost;
-    if (!Player.canAfford(cost)) {
+    if (!Player.canAfford(CONSTANTS.TravelCost)) {
       return;
     }
     if (Settings.SuppressTravelConfirmation) {
diff --git a/src/Locations/ui/TravelConfirmationModal.tsx b/src/Locations/ui/TravelConfirmationModal.tsx
index 5a16822d0..ee8bdd04d 100644
--- a/src/Locations/ui/TravelConfirmationModal.tsx
+++ b/src/Locations/ui/TravelConfirmationModal.tsx
@@ -14,7 +14,6 @@ interface IProps {
 }
 
 export function TravelConfirmationModal(props: IProps): React.ReactElement {
-  const cost = CONSTANTS.TravelCost;
   function travel(): void {
     props.travel();
   }
@@ -22,7 +21,8 @@ export function TravelConfirmationModal(props: IProps): React.ReactElement {
   return (
     <Modal open={props.open} onClose={props.onClose}>
       <Typography>
-        Would you like to travel to {props.city}? The trip will cost <Money money={cost} forPurchase={true} />.
+        Would you like to travel to {props.city}? The trip will cost{" "}
+        <Money money={CONSTANTS.TravelCost} forPurchase={true} />.
       </Typography>
       <br />
       <br />
diff --git a/src/NetscriptFunctions/Singularity.ts b/src/NetscriptFunctions/Singularity.ts
index e0628ceae..cde24fea3 100644
--- a/src/NetscriptFunctions/Singularity.ts
+++ b/src/NetscriptFunctions/Singularity.ts
@@ -269,7 +269,7 @@ export function NetscriptSingularity(): InternalAPI<ISingularity> {
               );
               return false;
             }
-            Player.location = LocationName.Sector12RothmanUniversity;
+            Player.gotoLocation(LocationName.Sector12RothmanUniversity);
             break;
           case LocationName.VolhavenZBInstituteOfTechnology.toLowerCase():
             if (Player.city != CityName.Volhaven) {
@@ -279,7 +279,7 @@ export function NetscriptSingularity(): InternalAPI<ISingularity> {
               );
               return false;
             }
-            Player.location = LocationName.VolhavenZBInstituteOfTechnology;
+            Player.gotoLocation(LocationName.VolhavenZBInstituteOfTechnology);
             break;
           default:
             helpers.log(ctx, () => `Invalid university name: '${universityName}'.`);
@@ -327,7 +327,7 @@ export function NetscriptSingularity(): InternalAPI<ISingularity> {
               );
               return false;
             }
-            Player.location = LocationName.AevumCrushFitnessGym;
+            Player.gotoLocation(LocationName.AevumCrushFitnessGym);
             break;
           case LocationName.AevumSnapFitnessGym.toLowerCase():
             if (Player.city != CityName.Aevum) {
@@ -338,7 +338,7 @@ export function NetscriptSingularity(): InternalAPI<ISingularity> {
               );
               return false;
             }
-            Player.location = LocationName.AevumSnapFitnessGym;
+            Player.gotoLocation(LocationName.AevumSnapFitnessGym);
             break;
           case LocationName.Sector12IronGym.toLowerCase():
             if (Player.city != CityName.Sector12) {
@@ -349,7 +349,7 @@ export function NetscriptSingularity(): InternalAPI<ISingularity> {
               );
               return false;
             }
-            Player.location = LocationName.Sector12IronGym;
+            Player.gotoLocation(LocationName.Sector12IronGym);
             break;
           case LocationName.Sector12PowerhouseGym.toLowerCase():
             if (Player.city != CityName.Sector12) {
@@ -360,7 +360,7 @@ export function NetscriptSingularity(): InternalAPI<ISingularity> {
               );
               return false;
             }
-            Player.location = LocationName.Sector12PowerhouseGym;
+            Player.gotoLocation(LocationName.Sector12PowerhouseGym);
             break;
           case LocationName.VolhavenMilleniumFitnessGym.toLowerCase():
             if (Player.city != CityName.Volhaven) {
@@ -371,7 +371,7 @@ export function NetscriptSingularity(): InternalAPI<ISingularity> {
               );
               return false;
             }
-            Player.location = LocationName.VolhavenMilleniumFitnessGym;
+            Player.gotoLocation(LocationName.VolhavenMilleniumFitnessGym);
             break;
           default:
             helpers.log(ctx, () => `Invalid gym name: ${gymName}. gymWorkout() failed`);
@@ -401,12 +401,10 @@ export function NetscriptSingularity(): InternalAPI<ISingularity> {
         case CityName.NewTokyo:
         case CityName.Ishima:
         case CityName.Volhaven:
-          if (Player.money < CONSTANTS.TravelCost) {
+          if (!Player.travel(cityName)) {
             helpers.log(ctx, () => "Not enough money to travel.");
             return false;
           }
-          Player.loseMoney(CONSTANTS.TravelCost, "other");
-          Player.city = cityName;
           helpers.log(ctx, () => `Traveled to ${cityName}`);
           Player.gainIntelligenceExp(CONSTANTS.IntelligenceSingFnBaseExpGain / 50000);
           return true;
diff --git a/src/NetscriptFunctions/Sleeve.ts b/src/NetscriptFunctions/Sleeve.ts
index 253a09d3b..24113c9e4 100644
--- a/src/NetscriptFunctions/Sleeve.ts
+++ b/src/NetscriptFunctions/Sleeve.ts
@@ -79,7 +79,11 @@ export function NetscriptSleeve(): InternalAPI<NetscriptSleeve> {
       const cityName = getEnumHelper("CityName").nsGetMember(ctx, _cityName);
       checkSleeveAPIAccess(ctx);
       checkSleeveNumber(ctx, sleeveNumber);
-      return Player.sleeves[sleeveNumber].travel(cityName);
+      if (!Player.sleeves[sleeveNumber].travel(cityName)) {
+        helpers.log(ctx, () => "Not enough money to travel.");
+        return false;
+      }
+      return true;
     },
     setToCompanyWork: (ctx) => (_sleeveNumber, _companyName) => {
       const sleeveNumber = helpers.number(ctx, "sleeveNumber", _sleeveNumber);
diff --git a/src/PersonObjects/Player/PlayerObjectGeneralMethods.ts b/src/PersonObjects/Player/PlayerObjectGeneralMethods.ts
index 62e45e4f9..ac00f6532 100644
--- a/src/PersonObjects/Player/PlayerObjectGeneralMethods.ts
+++ b/src/PersonObjects/Player/PlayerObjectGeneralMethods.ts
@@ -531,20 +531,23 @@ export function gainCodingContractReward(
   }
 }
 
-export function travel(this: PlayerObject, to: CityName): boolean {
-  if (Cities[to] == null) {
-    console.warn(`Player.travel() called with invalid city: ${to}`);
+export function travel(this: PlayerObject, cityName: CityName): boolean {
+  if (Cities[cityName] == null) {
+    throw new Error(`Player.travel() was called with an invalid city: ${cityName}`);
+  }
+  if (!this.canAfford(CONSTANTS.TravelCost)) {
     return false;
   }
-  this.city = to;
+
+  this.loseMoney(CONSTANTS.TravelCost, "other");
+  this.city = cityName;
 
   return true;
 }
 
 export function gotoLocation(this: PlayerObject, to: LocationName): boolean {
   if (Locations[to] == null) {
-    console.warn(`Player.gotoLocation() called with invalid location: ${to}`);
-    return false;
+    throw new Error(`Player.gotoLocation() was called with an invalid location: ${to}`);
   }
   this.location = to;
 
diff --git a/src/PersonObjects/Sleeve/Sleeve.ts b/src/PersonObjects/Sleeve/Sleeve.ts
index 9b48ab889..69a4d37c3 100644
--- a/src/PersonObjects/Sleeve/Sleeve.ts
+++ b/src/PersonObjects/Sleeve/Sleeve.ts
@@ -44,6 +44,7 @@ import { SleeveCrimeWork } from "./Work/SleeveCrimeWork";
 import * as sleeveMethods from "./SleeveMethods";
 import { calculateIntelligenceBonus } from "../formulas/intelligence";
 import { getEnumHelper } from "../../utils/EnumHelper";
+import { Cities } from "../../Locations/Cities";
 
 export class Sleeve extends Person implements SleevePerson {
   currentWork: SleeveWork | null = null;
@@ -255,13 +256,16 @@ export class Sleeve extends Person implements SleevePerson {
   }
 
   /** Travel to another City. Costs money from player */
-  travel(newCity: CityName): boolean {
+  travel(cityName: CityName): boolean {
+    if (Cities[cityName] == null) {
+      throw new Error(`Sleeve.travel() was called with an invalid city: ${cityName}`);
+    }
     if (!Player.canAfford(CONSTANTS.TravelCost)) {
       return false;
     }
 
     Player.loseMoney(CONSTANTS.TravelCost, "sleeves");
-    this.city = newCity;
+    this.city = cityName;
 
     return true;
   }
diff --git a/src/PersonObjects/Sleeve/ui/TravelModal.tsx b/src/PersonObjects/Sleeve/ui/TravelModal.tsx
index 76cec4276..2c7e78f1d 100644
--- a/src/PersonObjects/Sleeve/ui/TravelModal.tsx
+++ b/src/PersonObjects/Sleeve/ui/TravelModal.tsx
@@ -1,6 +1,5 @@
 import React from "react";
 import { Button, Typography } from "@mui/material";
-import { Player } from "@player";
 import { CityName } from "@enums";
 import { Sleeve } from "../Sleeve";
 import { CONSTANTS } from "../../../Constants";
@@ -19,11 +18,10 @@ interface IProps {
 
 export function TravelModal(props: IProps): React.ReactElement {
   function travel(city: string): void {
-    if (!Player.canAfford(CONSTANTS.TravelCost)) {
+    if (!props.sleeve.travel(city as CityName)) {
       dialogBoxCreate("You cannot afford to have this sleeve travel to another city");
+      return;
     }
-    props.sleeve.city = city as CityName;
-    Player.loseMoney(CONSTANTS.TravelCost, "sleeves");
     props.sleeve.stopWork();
     props.rerender();
     props.onClose();