Politico reports that Google (GOOG) and the Department of Justice could be “just days away” from an agreement for the search giant to acquire ITA Flight pricing and scheduling software.  But negotiations are getting tense and the deal could unravel at any moment.

Google announced its intentions to purchase ITA in July for $700 million.

Among conditions on the table are possible provisions under which Google would license ITA software to rivals and others aimed at easing industry concerns that Google will use its search dominance to unfairly disadvantage rivals in the online travel business.

A coalition of flight booking companies have banded together to oppose the deal in a coalition called Fairsearch.org.  The group contends that a Google-ITA merger would stifle competition in the online flight purchasing industry.

As part of its defense, Google has noted that Expedia, Travelocity or Priceline, the top three travel sites, doen’t even use ITA software. Videos published by both sides, below:

[vodpod id=Video.4804237&w=600&h=400&fv=]

[youtube=http://www.youtube.com/watch?v=UB606VwC-ik&w=600&h=375]

More on Fortune:

• Google’s ITA acquisition compares to Microsoft-Intuit ’95?
• Google posts its own ITA acquisition video
• Travel industry steps up attack on Google-ITA merger
• Google travel spat causes even more conflict
• Travel sector lines up to oppose Google-ITA purchase