Picking up from the 2017 thread United Airlines Fleet Updates [2017 Edition]

In 2017:
Entire fleet of 744s retired (last 20 exited in 2017)
12x 77Ws delivered (14 total - all with Polaris seats)
3x 789s delivered (brings total to 21)
752 scimitar program almost completed
73G slimline and new F cabin well underway
738 slimline and scimitar program almost complete
739 slimline program completed (1 unit still without scimitars)
4x new 738s delivered
2x used A320s delivered
6x used A319s delivered

34 50-seaters were removed from service (5 CR2s, 24 ER4s, 5 Q300s)
40 50-seaters were added to UAX service (all CR2s)
9 37-seaters were removed from service (2 E35s and 7 Q200s)
Entire fleet of Q300s were removed from service
Air Wisconsin began UAX service with fleet of CR2s
35 76-seat E175s were delivered.
14 CR7s removed from service


Jan 2018 United Fleet & 2018 Outlook:

A319 fleet: 67 total - all have new F seats, anticipate more used frames from China Southern in 2018

A320 fleet: 99 total - all have new F seats, no changes expected although more used frames are possible

73G fleet: 40 total (4 in Guam service) - all have scimitars, slimline program underway and new First seats being installed, should be finished in 2018

738 fleet: 141 total (7 in Guam service) - all have scimitars, only 6 more until slimline mod program is complete

739 fleet: 148 total - one without scimitars, all have slimlines, no other changes anticipated

73M fleet: first six 7M9 aircraft to enter fleet in 2018.

752 fleet: 56 total - scimitars on 39 of 41 16J frames, other 2 in 2018. 15 28J units will not get scimitars

753 fleet: 21 total - to get slimlines and new F seats in 2018, first frame in mod now

763 fleet: 35 total - 21 2-class will stay as is, 3 have Polaris, remaining 11 3-class frames to get Polaris in 2018

764 fleet: 16 total - crew rest modification in 2018, no other changes anticipated

772 fleet: 19 total - no changes anticipated

77E fleet: 55 total - 33x 3-class units to begin Polaris modification in 2018, remaining 22 2-class units to follow with Polaris modification

77W fleet: 14 total - all have Polaris seats, 4 more deliveries in 2018

788 fleet: 12 total - no changes anticipated

789 fleet: 21 total - 4 more deliveries in 2018, no other changes anticipated

78J fleet: first deliveries in late 2018 with Polaris seats installed (possibly up to 4 in service by year end)

CRJ-200 fleet: 104 Total (31 Air Wisconsin, 73 Skywest) plus 7 floaters - Air Wisconsin will add to their fleet in 2018, Skywest anticipate some reduction in frames

CRJ-700 fleet: 65 total (20 Skywest, 20 Mesa, 25 GoJet) - anticipate a few more will leave the fleet this year

E170 fleet: 38 total + 1 floater (all Republic) - no changes anticipated

E175 fleet: 152 total (65 Skywest, 59 Mesa, 28 Republic) - last frame delivered and will enter service with Mesa in early 2018, this completes scope limit of 153

ERJ-145 fleet: 170 total (109 ExpressJet, 38 TransStates, 23 CommutAir) - plans in flux, CommutAir and/or ExpressJet may receive more in 2018, some ExpressJet frames scheduled to come off contract

ERJ-135 fleet: 3 total (all ExpressJet) - likely elimination of type in 2018

Q200 fleet: 9 total (all Commutair) - elimination of type in early 2018

ATR42 fleet: 3 total (all Cape Air) - no changes anticipated

** note some of these fleet numbers differ from the UA fleet plan because I have included all frames where UA does not include pro-rate contract planes