diff --git a/README.rst b/README.rst
index f984feba..7ecd41a6 100644
--- a/README.rst
+++ b/README.rst
@@ -209,10 +209,10 @@ List of supported endpoints
     amadeus.shopping.flight_offers.get(origin='MAD', destination='NYC', departureDate='2019-08-01')
     
     # Flight Checkin Links
-    amadeus.reference_data.urls.checkin_links.get(airline='BA')
+    amadeus.reference_data.urls.checkin_links.get(airlineCode='BA')
 
     # Airline Code Lookup
-    amadeus.reference_data.airlines.get(IATACode='U2')
+    amadeus.reference_data.airlines.get(airlineCodes='U2')
 
     # Airport and City Search (autocomplete)
     # Find all the cities and airports starting by 'LON'
@@ -224,16 +224,16 @@ List of supported endpoints
     amadeus.reference_data.locations.airports.get(longitude=49.000, latitude=2.55)
 
     # Flight Most Searched Destinations
-    amadeus.travel.analytics.fare_searches.get(origin='MAD', sourceCountry='SP', period='2017-08')
+    amadeus.travel.analytics.fare_searches.get(originCityCode='MAD', sourceCountry='SP', period='2017-08')
 
     # Flight Most Booked Destinations
-    amadeus.travel.analytics.air_traffic.booked.get(origin='MAD', period='2017-08')
+    amadeus.travel.analytics.air_traffic.booked.get(originCityCode='MAD', period='2017-08')
 
     # Flight Most Traveled Destinations
-    amadeus.travel.analytics.air_traffic.traveled.get(origin='MAD', period='2017-01')
+    amadeus.travel.analytics.air_traffic.traveled.get(originCityCode='MAD', period='2017-01')
 
     # Flight Busiest Travel Period
-    amadeus.travel.analytics.air_traffic.busiest_period.get(origin='MAD', period='2017', direction='ARRIVING')
+    amadeus.travel.analytics.air_traffic.busiest_period.get(cityCode='MAD', period='2017', direction='ARRIVING')
 
     # Hotel Search API
     # Get list of Hotels by city code
diff --git a/amadeus/reference_data/_airlines.py b/amadeus/reference_data/_airlines.py
index b419acc2..3c7e4ccf 100644
--- a/amadeus/reference_data/_airlines.py
+++ b/amadeus/reference_data/_airlines.py
@@ -8,9 +8,11 @@ def get(self, **params):
 
         .. code-block:: python
 
-            amadeus.reference_data.airlines.get(IATACode='U2')
+            amadeus.reference_data.airlines.get(airlineCodes='U2')
 
-        :param IATACode: the IATA code for the airline, e.g. ``"1X"``
+        :param airlineCodes: the IATA or ICAO code for the airline, e.g.
+        :``"AF"`` (Air France IATA code)
+        :or ``"AFR"`` (Air France ICAO code)
 
         :rtype: amadeus.Response
         :raises amadeus.ResponseError: if the request could not be completed
diff --git a/amadeus/reference_data/urls/_checkin_links.py b/amadeus/reference_data/urls/_checkin_links.py
index be31e150..d15af059 100644
--- a/amadeus/reference_data/urls/_checkin_links.py
+++ b/amadeus/reference_data/urls/_checkin_links.py
@@ -9,9 +9,9 @@ def get(self, **params):
 
         .. code-block:: python
 
-            amadeus.reference_data.urls.checkin_links.get(airline='1X')
+            amadeus.reference_data.urls.checkin_links.get(airlineCode='BA')
 
-        :param airline: the IATA code for the airline, e.g. ``"1X"``
+        :param airlineCode: the IATA code for the airline, e.g. ``"BA"``
         :param language: the locale for the links, for example ``"en-GB"``
 
         :rtype: amadeus.Response
diff --git a/amadeus/travel/analytics/air_traffic/_booked.py b/amadeus/travel/analytics/air_traffic/_booked.py
index a0770275..49df031e 100644
--- a/amadeus/travel/analytics/air_traffic/_booked.py
+++ b/amadeus/travel/analytics/air_traffic/_booked.py
@@ -9,11 +9,11 @@ def get(self, **params):
         .. code-block:: python
 
             amadeus.travel.analytics.air_traffic.booked.get(
-                origin='LHR',
+                originCityCode='LHR',
                 period='2017-01'
             )
 
-        :param cityCode: IATA code of the origin city, for
+        :param originCityCode: IATA code of the origin city, for
             example ``"BOS"`` for Boston.
         :param query: period when consumers are traveling
             in ``YYYY-MM`` format
diff --git a/amadeus/travel/analytics/air_traffic/_busiest_period.py b/amadeus/travel/analytics/air_traffic/_busiest_period.py
index fcec7cd7..42ada2df 100644
--- a/amadeus/travel/analytics/air_traffic/_busiest_period.py
+++ b/amadeus/travel/analytics/air_traffic/_busiest_period.py
@@ -9,7 +9,7 @@ def get(self, **params):
         .. code-block:: python
 
             amadeus.travel.analytics.air_traffic.busiest_period.get(
-                origin='MAD',
+                cityCode='MAD',
                 period='2017',
                 direction=Direction.ARRIVING
             )
diff --git a/amadeus/travel/analytics/air_traffic/_traveled.py b/amadeus/travel/analytics/air_traffic/_traveled.py
index 93baa344..41c0800e 100644
--- a/amadeus/travel/analytics/air_traffic/_traveled.py
+++ b/amadeus/travel/analytics/air_traffic/_traveled.py
@@ -9,11 +9,11 @@ def get(self, **params):
         .. code-block:: python
 
             amadeus.travel.analytics.air_traffic.traveled.get(
-                origin='LHR',
+                originCityCode='LHR',
                 period='2017-01'
             )
 
-        :param cityCode: IATA code of the origin city, for
+        :param originCityCode: IATA code of the origin city, for
             example ``"BOS"`` for Boston.
         :param query: period when consumers are traveling
             in ``YYYY-MM`` format