Most of those new Delta flights are flown by RJs.

From a July press release:

With Pittsburgh and New Orleans, Delta has now announced 10 new markets from Boston in 2017. The airline’s new service also includes:

Tampa twice daily on Airbus A319 aircraft as of February
Dublin, Ireland, daily on Boeing 757-200 aircraft as of May
San Francisco twice daily on Boeing 757-200 aircraft as of June
Buffalo, N.Y., three times daily on Bombardier CRJ-200 aircraft (operated by Endeavor Air, Inc.) as of August
Austin, Texas, daily on Airbus A319 aircraft as of September
Kansas City daily on Bombardier CRJ-900 aircraft (operated by Endeavor Air, Inc.) as of September
Jacksonville, Fla., daily on Embraer E170 aircraft (operated by Republic Airline) as of September
Norfolk, Va., daily on Bombardier CRJ-700 aircraft (operated by ExpressJet Airlines, Inc) as of September

http://news.delta.com/delta-continue...gh-new-orleans

JetBlue has its issues, but the growth we have is ours. A great CBA with a solid scope section will only improve our situation.