diff --git a/changelog.md b/changelog.md
index 0ebd33eb..215d3f98 100644
--- a/changelog.md
+++ b/changelog.md
@@ -8,6 +8,7 @@ Saves from 9.x are not compatible with 10.0.0.
 
 ## Fixes
 
+* **[Flight Planning]** Aircraft from even numbered flights will no longer become inaccessible when canceling a draft package.
 * **[UI]** Flight members in the loadout menu are now numbered starting from 1 instead of 0.
 
 # 9.0.0
diff --git a/qt_ui/models.py b/qt_ui/models.py
index cc65fc89..58266f0d 100644
--- a/qt_ui/models.py
+++ b/qt_ui/models.py
@@ -288,7 +288,7 @@ class AtoModel(QAbstractListModel):
                     return
 
                 package_model = self.find_matching_package_model(package)
-                for flight in package.flights:
+                for flight in list(package.flights):
                     if flight.state.cancelable:
                         package_model.delete_flight(flight)
                         events.delete_flight(flight)
diff --git a/qt_ui/windows/mission/QPackageDialog.py b/qt_ui/windows/mission/QPackageDialog.py
index 1feb64ff..dfb3dae5 100644
--- a/qt_ui/windows/mission/QPackageDialog.py
+++ b/qt_ui/windows/mission/QPackageDialog.py
@@ -261,7 +261,7 @@ class QNewPackageDialog(QPackageDialog):
 
     def on_cancel(self) -> None:
         super().on_cancel()
-        for flight in self.package_model.package.flights:
+        for flight in list(self.package_model.package.flights):
             self.package_model.cancel_or_abort_flight(flight)