diff --git a/airflow/api/common/mark_tasks.py b/airflow/api/common/mark_tasks.py
index a280d0f381773..22cde7febf78d 100644
--- a/airflow/api/common/mark_tasks.py
+++ b/airflow/api/common/mark_tasks.py
@@ -24,7 +24,6 @@
 from sqlalchemy.orm import contains_eager
 from sqlalchemy.orm.session import Session as SASession
 
-from airflow.models.baseoperator import BaseOperator
 from airflow.models.dag import DAG
 from airflow.models.dagrun import DagRun
 from airflow.models.operator import Operator
@@ -371,7 +370,7 @@ def set_dag_run_state_to_success(
     run_id: Optional[str] = None,
     commit: bool = False,
     session: SASession = NEW_SESSION,
-):
+) -> List[TaskInstance]:
     """
     Set the dag run for a specific execution date and its task instances
     to success.
@@ -418,7 +417,7 @@ def set_dag_run_state_to_failed(
     run_id: Optional[str] = None,
     commit: bool = False,
     session: SASession = NEW_SESSION,
-):
+) -> List[TaskInstance]:
     """
     Set the dag run for a specific execution date or run_id and its running task instances
     to failed.
@@ -472,15 +471,15 @@ def set_dag_run_state_to_failed(
     return set_state(tasks=tasks, run_id=run_id, state=State.FAILED, commit=commit, session=session)
 
 
-@provide_session
-def set_dag_run_state_to_running(
+def __set_dag_run_state_to_running_or_queued(
     *,
+    new_state: DagRunState,
     dag: DAG,
     execution_date: Optional[datetime] = None,
     run_id: Optional[str] = None,
     commit: bool = False,
     session: SASession = NEW_SESSION,
-):
+) -> List[TaskInstance]:
     """
     Set the dag run for a specific execution date to running.
 
@@ -492,7 +491,7 @@ def set_dag_run_state_to_running(
     :return: If commit is true, list of tasks that have been updated,
              otherwise list of tasks that will be updated
     """
-    res: List[BaseOperator] = []
+    res: List[TaskInstance] = []
 
     if not (execution_date is None) ^ (run_id is None):
         return res
@@ -512,7 +511,45 @@ def set_dag_run_state_to_running(
         raise ValueError(f'DagRun with run_id: {run_id} not found')
     # Mark the dag run to running.
     if commit:
-        _set_dag_run_state(dag.dag_id, run_id, DagRunState.RUNNING, session)
+        _set_dag_run_state(dag.dag_id, run_id, new_state, session)
 
     # To keep the return type consistent with the other similar functions.
     return res
+
+
+@provide_session
+def set_dag_run_state_to_running(
+    *,
+    dag: DAG,
+    execution_date: Optional[datetime] = None,
+    run_id: Optional[str] = None,
+    commit: bool = False,
+    session: SASession = NEW_SESSION,
+) -> List[TaskInstance]:
+    return __set_dag_run_state_to_running_or_queued(
+        new_state=DagRunState.RUNNING,
+        dag=dag,
+        execution_date=execution_date,
+        run_id=run_id,
+        commit=commit,
+        session=session,
+    )
+
+
+@provide_session
+def set_dag_run_state_to_queued(
+    *,
+    dag: DAG,
+    execution_date: Optional[datetime] = None,
+    run_id: Optional[str] = None,
+    commit: bool = False,
+    session: SASession = NEW_SESSION,
+) -> List[TaskInstance]:
+    return __set_dag_run_state_to_running_or_queued(
+        new_state=DagRunState.QUEUED,
+        dag=dag,
+        execution_date=execution_date,
+        run_id=run_id,
+        commit=commit,
+        session=session,
+    )
diff --git a/airflow/www/static/js/dag.js b/airflow/www/static/js/dag.js
index ee9b31146637b..7f44a86531053 100644
--- a/airflow/www/static/js/dag.js
+++ b/airflow/www/static/js/dag.js
@@ -225,6 +225,7 @@ export function callModal(t, d, extraLinks, tryNumbers, sd, drID) {
 export function callModalDag(dag) {
   $('#dagModal').modal({});
   $('#dagModal').css('margin-top', '0');
+  $('#run_id').text(dag.run_id);
   executionDate = dag.execution_date;
   dagRunId = dag.run_id;
   updateButtonUrl(buttons.dag_graph_view, {
diff --git a/airflow/www/templates/airflow/dag.html b/airflow/www/templates/airflow/dag.html
index f2444ababb70a..19c07ed77f68b 100644
--- a/airflow/www/templates/airflow/dag.html
+++ b/airflow/www/templates/airflow/dag.html
@@ -172,7 +172,7 @@ <h4 class="pull-right" style="user-select: none;-moz-user-select: auto;">
     </div>
   </div>
   {{ dag_docs(doc_md) }}
-  <!-- Modal -->
+  <!-- Modal for Task Instance -->
   <div class="modal fade" id="taskInstanceModal" tabindex="-1" role="dialog" aria-labelledby="taskInstanceModalLabel" aria-hidden="true">
     <div class="modal-dialog">
       <div class="modal-content">
@@ -375,7 +375,7 @@ <h4>Task Actions</h4>
       </div>
     </div>
   </div>
-  <!-- Modal for dag -->
+  <!-- Modal for DAG run -->
   <div class="modal fade" id="dagModal" tabindex="-1" role="dialog" aria-labelledby="dagModalLabel" aria-hidden="true">
     <div class="modal-dialog">
       <div class="modal-content">
@@ -383,6 +383,8 @@ <h4>Task Actions</h4>
           <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
           <h4 class="modal-title" id="dagModalLabel">
             <span class="text-muted">{{ 'SUBDAG' if dag.parent_dag is defined and dag.parent_dag else 'DAG' }}:</span> {{dag.dag_id}}
+            <br>
+            <span class="text-muted">Run Id:</span> <span id="run_id"></span>
           </h4>
         </div>
         <div class="modal-body">
@@ -393,15 +395,30 @@ <h4 class="modal-title" id="dagModalLabel">
                 <input type="hidden" name="dag_id" value="{{ dag.dag_id }}">
                 <input type="hidden" name="dag_run_id">
                 <input type="hidden" name="origin" value="{{ request.base_url }}">
-                <button type="button" id="btn_dagrun_clear" class="btn btn-primary" data-action="{{ url_for('Airflow.dagrun_clear') }}">
-                  Clear
-                </button>
-                <button type="button" id="btn_dagrun_failed" class="btn btn-primary" data-action="{{ url_for('Airflow.dagrun_failed') }}">
-                  Mark Failed
-                </button>
-                <button type="button" id="btn_dagrun_success" class="btn btn-primary" data-action="{{ url_for('Airflow.dagrun_success') }}">
-                  Mark Success
-                </button>
+                <div>
+                  <h5>Update State</h5>
+                  <button type="button" id="btn_dagrun_failed" class="btn btn-primary" data-action="{{ url_for('Airflow.dagrun_failed') }}">
+                    Mark Failed
+                  </button>
+                  <button type="button" id="btn_dagrun_success" class="btn btn-primary" data-action="{{ url_for('Airflow.dagrun_success') }}">
+                    Mark Success
+                  </button>
+                </div>
+                <div>
+                  <h5>Re-run</h5>
+                  <button type="button" id="btn_dagrun_clear" class="btn btn-primary" data-action="{{ url_for('Airflow.dagrun_clear') }}">
+                    Clear existing tasks
+                  </button>
+                  <button
+                    type="button"
+                    id="btn_dagrun_queued"
+                    class="btn btn-primary"
+                    data-action="{{ url_for('Airflow.dagrun_queued') }}"
+                    title="Queue up new tasks to make the DAG run up-to-date with any DAG file changes."
+                  >
+                    Queue up new tasks
+                  </button>
+                </div>
               </form>
             </span>
             <span class="col-md-4 text-right">
diff --git a/airflow/www/views.py b/airflow/www/views.py
index 180aa6464378f..ae70427fb3b66 100644
--- a/airflow/www/views.py
+++ b/airflow/www/views.py
@@ -91,7 +91,11 @@
 
 import airflow
 from airflow import models, plugins_manager, settings
-from airflow.api.common.mark_tasks import set_dag_run_state_to_failed, set_dag_run_state_to_success
+from airflow.api.common.mark_tasks import (
+    set_dag_run_state_to_failed,
+    set_dag_run_state_to_queued,
+    set_dag_run_state_to_success,
+)
 from airflow.compat.functools import cached_property
 from airflow.configuration import AIRFLOW_CONFIG, conf
 from airflow.exceptions import AirflowException
@@ -2117,6 +2121,34 @@ def _mark_dagrun_state_as_success(self, dag_id, dag_run_id, confirmed, origin):
 
             return response
 
+    def _mark_dagrun_state_as_queued(self, dag_id: str, dag_run_id: str, confirmed: bool, origin: str):
+        if not dag_run_id:
+            flash('Invalid dag_run_id', 'error')
+            return redirect(origin)
+
+        dag = current_app.dag_bag.get_dag(dag_id)
+
+        if not dag:
+            flash(f'Cannot find DAG: {dag_id}', 'error')
+            return redirect(origin)
+
+        new_dag_state = set_dag_run_state_to_queued(dag=dag, run_id=dag_run_id, commit=confirmed)
+
+        if confirmed:
+            flash('Marked the DagRun as queued.')
+            return redirect(origin)
+
+        else:
+            details = '\n'.join(str(t) for t in new_dag_state)
+
+            response = self.render_template(
+                'airflow/confirm.html',
+                message="Here's the list of task instances you are about to change",
+                details=details,
+            )
+
+            return response
+
     @expose('/dagrun_failed', methods=['POST'])
     @auth.has_access(
         [
@@ -2149,6 +2181,22 @@ def dagrun_success(self):
         origin = get_safe_url(request.form.get('origin'))
         return self._mark_dagrun_state_as_success(dag_id, dag_run_id, confirmed, origin)
 
+    @expose('/dagrun_queued', methods=['POST'])
+    @auth.has_access(
+        [
+            (permissions.ACTION_CAN_EDIT, permissions.RESOURCE_DAG),
+            (permissions.ACTION_CAN_EDIT, permissions.RESOURCE_DAG_RUN),
+        ]
+    )
+    @action_logging
+    def dagrun_queued(self):
+        """Queue DagRun so tasks that haven't run yet can be started."""
+        dag_id = request.form.get('dag_id')
+        dag_run_id = request.form.get('dag_run_id')
+        confirmed = request.form.get('confirmed') == 'true'
+        origin = get_safe_url(request.form.get('origin'))
+        return self._mark_dagrun_state_as_queued(dag_id, dag_run_id, confirmed, origin)
+
     @expose("/dagrun_details")
     @auth.has_access(
         [
diff --git a/tests/api/common/test_mark_tasks.py b/tests/api/common/test_mark_tasks.py
index 7662eeca6bcd8..7e461dc4e3098 100644
--- a/tests/api/common/test_mark_tasks.py
+++ b/tests/api/common/test_mark_tasks.py
@@ -17,6 +17,7 @@
 # under the License.
 
 from datetime import timedelta
+from typing import Callable
 
 import pytest
 from sqlalchemy.orm import eagerload
@@ -26,6 +27,7 @@
     _create_dagruns,
     _DagRunInfo,
     set_dag_run_state_to_failed,
+    set_dag_run_state_to_queued,
     set_dag_run_state_to_running,
     set_dag_run_state_to_success,
     set_state,
@@ -519,19 +521,23 @@ def test_set_running_dag_run_to_failed(self):
         assert dr.get_task_instance('run_after_loop').state == State.FAILED
         self._verify_dag_run_dates(self.dag1, date, State.FAILED, middle_time)
 
-    def test_set_running_dag_run_to_running(self):
-        date = self.execution_dates[0]
+    @pytest.mark.parametrize(
+        "dag_run_alter_function, new_state",
+        [(set_dag_run_state_to_running, State.RUNNING), (set_dag_run_state_to_queued, State.QUEUED)],
+    )
+    def test_set_running_dag_run_to_activate_state(self, dag_run_alter_function: Callable, new_state: State):
+        date = self.execution_dates[0]  # type: ignore
         dr = self._create_test_dag_run(State.RUNNING, date)
         middle_time = timezone.utcnow()
         self._set_default_task_instance_states(dr)
 
-        altered = set_dag_run_state_to_running(dag=self.dag1, run_id=dr.run_id, commit=True)
+        altered = dag_run_alter_function(dag=self.dag1, run_id=dr.run_id, commit=True)  # type: ignore
 
         # None of the tasks should be altered, only the dag itself
         assert len(altered) == 0
-        self._verify_dag_run_state(self.dag1, date, State.RUNNING)
+        self._verify_dag_run_state(self.dag1, date, new_state)  # type: ignore
         self._verify_task_instance_states_remain_default(dr)
-        self._verify_dag_run_dates(self.dag1, date, State.RUNNING, middle_time)
+        self._verify_dag_run_dates(self.dag1, date, new_state, middle_time)  # type: ignore
 
     def test_set_success_dag_run_to_success(self):
         date = self.execution_dates[0]
@@ -562,19 +568,23 @@ def test_set_success_dag_run_to_failed(self):
         assert dr.get_task_instance('run_after_loop').state == State.FAILED
         self._verify_dag_run_dates(self.dag1, date, State.FAILED, middle_time)
 
-    def test_set_success_dag_run_to_running(self):
-        date = self.execution_dates[0]
+    @pytest.mark.parametrize(
+        "dag_run_alter_function,new_state",
+        [(set_dag_run_state_to_running, State.RUNNING), (set_dag_run_state_to_queued, State.QUEUED)],
+    )
+    def test_set_success_dag_run_to_activate_state(self, dag_run_alter_function: Callable, new_state: State):
+        date = self.execution_dates[0]  # type: ignore
         dr = self._create_test_dag_run(State.SUCCESS, date)
         middle_time = timezone.utcnow()
         self._set_default_task_instance_states(dr)
 
-        altered = set_dag_run_state_to_running(dag=self.dag1, run_id=dr.run_id, commit=True)
+        altered = dag_run_alter_function(dag=self.dag1, run_id=dr.run_id, commit=True)  # type: ignore
 
         # None of the tasks should be altered, but only the dag object should be changed
         assert len(altered) == 0
-        self._verify_dag_run_state(self.dag1, date, State.RUNNING)
+        self._verify_dag_run_state(self.dag1, date, new_state)  # type: ignore
         self._verify_task_instance_states_remain_default(dr)
-        self._verify_dag_run_dates(self.dag1, date, State.RUNNING, middle_time)
+        self._verify_dag_run_dates(self.dag1, date, new_state, middle_time)  # type: ignore
 
     def test_set_failed_dag_run_to_success(self):
         date = self.execution_dates[0]
@@ -606,19 +616,23 @@ def test_set_failed_dag_run_to_failed(self):
         assert dr.get_task_instance('run_after_loop').state == State.FAILED
         self._verify_dag_run_dates(self.dag1, date, State.FAILED, middle_time)
 
-    def test_set_failed_dag_run_to_running(self):
-        date = self.execution_dates[0]
+    @pytest.mark.parametrize(
+        "dag_run_alter_function,state",
+        [(set_dag_run_state_to_running, State.RUNNING), (set_dag_run_state_to_queued, State.QUEUED)],
+    )
+    def test_set_failed_dag_run_to_activate_state(self, dag_run_alter_function: Callable, state: State):
+        date = self.execution_dates[0]  # type: ignore
         dr = self._create_test_dag_run(State.SUCCESS, date)
         middle_time = timezone.utcnow()
         self._set_default_task_instance_states(dr)
 
-        altered = set_dag_run_state_to_running(dag=self.dag1, run_id=dr.run_id, commit=True)
+        altered = dag_run_alter_function(dag=self.dag1, run_id=dr.run_id, commit=True)  # type: ignore
 
         # None of the tasks should be altered, since we've only altered the DAG itself
         assert len(altered) == 0
-        self._verify_dag_run_state(self.dag1, date, State.RUNNING)
+        self._verify_dag_run_state(self.dag1, date, state)  # type: ignore
         self._verify_task_instance_states_remain_default(dr)
-        self._verify_dag_run_dates(self.dag1, date, State.RUNNING, middle_time)
+        self._verify_dag_run_dates(self.dag1, date, state, middle_time)  # type: ignore
 
     def test_set_state_without_commit(self):
         date = self.execution_dates[0]
@@ -632,6 +646,13 @@ def test_set_state_without_commit(self):
         self._verify_dag_run_state(self.dag1, date, State.RUNNING)
         self._verify_task_instance_states_remain_default(dr)
 
+        will_be_altered = set_dag_run_state_to_queued(dag=self.dag1, run_id=dr.run_id, commit=False)
+
+        # None of the tasks will be altered.
+        assert len(will_be_altered) == 0
+        self._verify_dag_run_state(self.dag1, date, State.RUNNING)
+        self._verify_task_instance_states_remain_default(dr)
+
         will_be_altered = set_dag_run_state_to_failed(dag=self.dag1, run_id=dr.run_id, commit=False)
 
         # Only the running task should be altered.
@@ -695,6 +716,8 @@ def test_set_dag_run_state_edge_cases(self):
         assert len(altered) == 0
         altered = set_dag_run_state_to_running(dag=None, execution_date=self.execution_dates[0])
         assert len(altered) == 0
+        altered = set_dag_run_state_to_queued(dag=None, execution_date=self.execution_dates[0])
+        assert len(altered) == 0
 
         # No dag_run_id
         altered = set_dag_run_state_to_success(dag=self.dag1, run_id=None)
@@ -703,6 +726,8 @@ def test_set_dag_run_state_edge_cases(self):
         assert len(altered) == 0
         altered = set_dag_run_state_to_running(dag=self.dag1, run_id=None)
         assert len(altered) == 0
+        altered = set_dag_run_state_to_queued(dag=self.dag1, run_id=None)
+        assert len(altered) == 0
 
         # This will throw ValueError since dag.last_dagrun is None
         # need to be 0 does not exist.