Qatar Airlines via Doha
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Direct - Singapore Airlines, Jetstar, Air Asia, KLM, Qatar Airlines, Garuda
No, you can take any flight that flies to Doha international airport
p.i.a (pakistan international airlines) and Airblue
Malaysian Airlines connects to several major airlines these airlines are (but aren't limited to) Firefly, Qatar Air, Jet Airways, Southwest, and Untied Airways.
Travelocity flights has mostly all airlines listed. They have American Airlines, Virgin America, Qatar Airways, China Airlines, and Delta Airlines, just to name a few.
The following are some airlines that do not offer any form of first class airfare; Qatar Airways, United Airlines, OPenSkies Airlines, and Singapore Airlines.
not enough for unsociable hrs
Very shortly they wil be part of the OneWorld alliance. Any airline in this alliance will then accept Qatar miles. This includes American Airlines, Cathay, British Airways etc.
How much alcohol is allow in checked baggage in emirates airlines
By a flight - Qatar Airways, India Air, Lanka Airlines.