Your employer is not required to do so unless you have an agreement with them do pay. You do have certain rights to deduct this mileage from your taxes if you meet certain requirements.
Unless you have some special written arrangement, mileage reimbursement would be at the pleasure of the employer. In other words, the employer is generally not required to reimburse you at all so their decision to use mapquest is probably ok.
Your employer should be telling you what the mileage is. At my place of employment, we get 50.5 cents a mile.
From airport to airport, the distance is 5,988 miles.
Not all employers do.
An employer can pay any amount they want for gas mileage. The federal government allows an employee to claim a deduction for the business mileage if the employer does not reimburse the employee for the expense.
The distance is about 1,018 air miles.
Very few employers are required to pay you mileage at all, so the fact that you calculate mileage at all is a bonus. That being said, the employer has a perfect right to determine the amount of miles and the rate at which they pay you.
121 Miles
About 400 miles.
Two hundred thirteen (213) is the air mileage from Ronald Reagan Washington National Airport (DCA) to John F. Kennedy International Airport (JFK). That equals 342 kilometers or 185 nautical miles.
Two thousand six hundred ninety-seven (2,697) is the air mileage from Portland International Airport (PDX) in Oregon to Miami International Airport (MIA) in Florida. That equals 4,340 kilometers or 2,343 nautical miles.
130 miles