from urllib import urlencode
import urllib2

headers = {'Accept':'application/json, text/javascript, */*',
'Accept-Encoding':'gzip, deflate',
'Accept-Language':'ru-RU,ru;q=0.8,en-US;q=0.6,en;q=0.4',
'Connection':'keep-alive',
'Content-Length':'772',
'Content-Type':'application/x-www-form-urlencoded', 'Host':'www.flyniki.com',
'Origin':'http://www.flyniki.com',
'Referer':'http://www.flyniki.com/ru-RU/booking/flight/vacancy.php?sid=8b61765620b1136105a6',
'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.94 Safari/537.36',
'X-Requested-With':'XMLHttpRequest'}
url = 'http://www.flyniki.com/en-RU/booking/flight/vacancy.php'
params = urlencode({'sid':'8b61765620b1136105a6'})
req = urllib2.Request(url, params, headers)
req.add_header('Cookie', 'GTMSITE-BERLIN=3744215614.25088.0000; remember=1%3Bru%3BRU; ABSESS=84889c6f-baba9b8e-84889be9-baba9b8e-0000000a-b8p2inp1f7sd17ach7nib13kh7; startConnection=SYD%40DME%402015-02-03%402015-02-06; _ga=GA1.2.1692564451.1422412451; lst=1422603363; GTMWEBSITE=BER')
response = urllib2.urlopen(req)
result = response.read()
print result