Check PNR Status Online through OLF Website, Check PNR Status through SMS - In case, you're not online, you may send an SMS to 139 using the format below. • Send the text: PNR <10 digit PNR Number> to 139. • Example- PNR 4360373388 You will get a sms on your registered mobile number with your PNR Status, confirmation and updates. Please note that SMS service will incur carrier costs.