The cost of military travel is a tightly guarded secret. Congress and the Pentagon would not comment on the cost of congressional travel, but it is many times more expensive than flying commercial.
The congressional record lists pages upon pages of trips, including one taken by eight congressmen and three staffers to Australia, New Zealand and Antarctica. No one would comment on the cost of the air travel, but a private charter plane on a trip like that would cost approximately $500,000.
Members of Congress may say it's a trip to foster relationships, but it's also a great photo and a once-in-a-lifetime experience -- paid for with taxpayer money.