As a Jr. Lineholder EWR 737 for about a year before transferring, i could always drop at least 1 x 4-day trip to either open time (company) or another pilot and turn a 15-16 day off line into 19-20 days off before selectively rebuilding with better trips. If you are in the front of the CY18 hiring and go to EWR 737, you will quickly have a line and enjoy tremendous schedule flexibility with major holidays being the only days you won't easily wrangle out of. Dont forget partial or full month COLA is available many non-Summer months too if you want to lock in bigger chunks of time off.
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