diff --git a/.changes/next-release/bugfix-S3-cba1d450.json b/.changes/next-release/bugfix-S3-cba1d450.json
new file mode 100644
index 0000000000..df2d8a0a1a
--- /dev/null
+++ b/.changes/next-release/bugfix-S3-cba1d450.json
@@ -0,0 +1,5 @@
+{
+  "type": "bugfix",
+  "category": "S3",
+  "description": "Updates S3 client to no longer attempt to determine a bucket's region when a request is aborted."
+}
\ No newline at end of file
diff --git a/lib/event_listeners.js b/lib/event_listeners.js
index 4fb4e6448c..010a4366fe 100644
--- a/lib/event_listeners.js
+++ b/lib/event_listeners.js
@@ -282,12 +282,16 @@ AWS.EventListeners = {
       }
 
       function error(err) {
-        resp.error = AWS.util.error(err, {
-          code: 'NetworkingError',
-          region: resp.request.httpRequest.region,
-          hostname: resp.request.httpRequest.endpoint.hostname,
-          retryable: true
-        });
+        if (err.code !== 'RequestAbortedError') {
+          var errCode = err.code === 'TimeoutError' ? err.code : 'NetworkingError';
+          err = AWS.util.error(err, {
+            code: errCode,
+            region: resp.request.httpRequest.region,
+            hostname: resp.request.httpRequest.endpoint.hostname,
+            retryable: true
+          });
+        }
+        resp.error = err;
         resp.request.emit('httpError', [resp.error, resp], function() {
           done();
         });
diff --git a/lib/service.js b/lib/service.js
index 67e1b7b83d..30fedcdf3a 100644
--- a/lib/service.js
+++ b/lib/service.js
@@ -354,6 +354,7 @@ AWS.Service = inherit({
    * @api private
    */
   retryableError: function retryableError(error) {
+    if (this.timeoutError(error)) return true;
     if (this.networkingError(error)) return true;
     if (this.expiredCredentialsError(error)) return true;
     if (this.throttledError(error)) return true;
@@ -368,6 +369,13 @@ AWS.Service = inherit({
     return error.code === 'NetworkingError';
   },
 
+  /**
+   * @api private
+   */
+  timeoutError: function timeoutError(error) {
+    return error.code === 'TimeoutError';
+  },
+
   /**
    * @api private
    */
diff --git a/test/browser.spec.js b/test/browser.spec.js
index 9571e78e90..feb6f9c4c4 100644
--- a/test/browser.spec.js
+++ b/test/browser.spec.js
@@ -136,7 +136,7 @@
         req.on('httpHeaders', function() {
           return this.abort();
         });
-        return req.send(function(err) {
+        req.send(function(err) {
           expect(err.name).to.equal('RequestAbortedError');
           return done();
         });
@@ -1125,8 +1125,56 @@
           });
         });
       });
+
+      it('won\'t attempt to update bucket region if request is aborted', function(done) {
+        var req;
+        var s3Config = AWS.util.merge(config, config.s3);
+        s3Config.params = AWS.util.copy(s3Config.params);
+        s3Config.region = 'us-west-2';
+        s3Config.params.Bucket += '-us-west-2';
+        var s3 = new AWS.S3(s3Config);
+        req = s3.putObject({
+          Key: 'key',
+          Body: 'body'
+        });
+        req.on('httpHeaders', function() {
+          return this.abort();
+        });
+        var spy = helpers.spyOn(s3, 'updateReqBucketRegion').andCallThrough();
+        req.send(function(err) {
+          expect(err.name).to.equal('RequestAbortedError');
+          expect(spy.calls.length).to.equal(0);
+          return done();
+        });
+      });
+
+      it('won\'t attempt to update bucket region if request times out', function(done) {
+        var req;
+        var s3Config = AWS.util.merge(config, config.s3);
+        s3Config.params = AWS.util.copy(s3Config.params);
+        s3Config.httpOptions = {
+          timeout: 1
+        };
+        s3Config.region = 'us-west-2';
+        s3Config.params.Bucket += '-us-west-2';
+        var s3 = new AWS.S3(s3Config);
+        req = s3.putObject({
+          Key: 'key',
+          Body: 'body'
+        });
+        req.on('httpHeaders', function() {
+          throw AWS.util.error(new Error('TimeoutError'), {code: 'TimeoutError'});
+        });
+        var spy = helpers.spyOn(s3, 'updateReqBucketRegion').andCallThrough();
+        req.send(function(err) {
+          expect(err.name).to.equal('TimeoutError');
+          expect(spy.calls.length).to.equal(0);
+          return done();
+        });
+      });
+
       describe('upload()', function() {
-        return it('supports blobs using upload()', function(done) {
+        it('supports blobs using upload()', function(done) {
           var key, size, u;
           key = uniqueName('test');
           size = 100;
@@ -1134,7 +1182,7 @@
             Key: key,
             Body: new Blob([new Uint8Array(size)])
           });
-          return u.send(function(err, data) {
+          u.send(function(err, data) {
             expect(err).not.to.exist;
             expect(typeof data.ETag).to.equal('string');
             expect(typeof data.Location).to.equal('string');