Is there any easy way to compare both domestic and international flights? I have been looking for some sort of system like expedia.com, travelocity.com, or orbitz.com but it doesn't seem to exist. Those sites only work for flights that originate inside the USA.

More specifically, I am trying to find the best route / airfare to New Delhi but I am sure I will want to use a system like this for other future trips as well.

Currently, as far as I know, you have to figure out which airlines go to the destination you are looking for and then go to each of their individual websites... VERY annoying and time consuming!!

Any ideas?

This one might be OK. I've never tried booking through them though.

http://www.saveflights.com

www.thaifly.com

This web site will allow you to compare some flights originating out of Thailand.

This one might be OK. I've never tried booking through them though.

http://www.saveflights.com

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Have booked with saveflights on a no of occasions and can not fault in any way both to Thailand and from contact name Tom.

Just booked china air BKK-AMS AND AMS--CORK for B$33750 inc cridit card charge. Most helpfull.

SaveFlights are very good. I used them recently for an Australian trip, very helpful, they reply to e-mails promptly, and prices were competitive.

I travelled on Malaysian Airlines for the first time, new planes with all the latest entertainment even in economy, good service, leaves Thai Airways for dead imo, and it was a much better price. I've even joined the MAS frequent flyer program as l think l will be using them again.

One warning however, and it's not about SaveFlights themselves.

If you book by credit card you use a company called Thai epay, who handle credit card payments for a number of Thai websites. I use separate disposable e-mail addresses for every company l deal with and the one l created just for Thai epay started receiving spam a month after l set it up, so if you are using a credit card do not give out your primary e-mail account to Thai epay unless you want to be spammed.