$89 Cheap flight deals from Boston (BOS) to Sullivan (STL)

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If you are looking for low cost Boston to Sullivan flights, just skip all of the other so-called bargain travel sites, because Orbitz offers guaranteed low fares. That means you don't have to constantly scan multiple sites and hover like a vulture at your computer, hoping to score better deals through last-minute sales.

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You don't have to give up frequent flyer points to take advantage of our low fares. Add your frequent flyer number when you book your Boston to Sullivan flights to receive credit for your trip.