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Earlier today I posted about $39 fares between select routes within the US. If your plans are flexible and you live in New York, Chicago, Miami, or Philadelphia you might possibly be able to find a roundtrip flight for less than $100. But… I just read that Frontier is also offering a one day promotion code where you can get an additional 13% off your flight (thanks to Million Mile Secrets). To get the additional 13% off you must use promotion code SNOWFLAKE.
So that means if you were able to find one of the cheap fares that I wrote about this morning. For example, instead of paying $39 from Chicago to Tampa, you can fly for just $35.66. Remember, the discount is not taken off the taxes.