Fly to Australia for just $100 with this Qantas birthday sale

To celebrate its centennial, Qantas is offering special deals all week including $100 one-way fares from the US to Australia.

The 100th anniversary flight deal kicked off on Monday and will run until Thursday this week. Each day a new route will go on sale at exactly 5pm EST. It's limited to just 100 tickets per day so you'll need to be quick to bag the deal. The one-way economy fares cost $100 each way (includes taxes and fees) and must be purchased as part of a round-trip itinerary from Los Angeles, San Francisco, Dallas-Fort Worth or Chicago. All fares offered in the sale are economy class and not eligible for upgrades either.