Have th it CW prices changed? I’ve been checking each day with BA, for March 2019, can’t see their prices are any different. Am I missing something blindingly obvious? (Entirely possible!)
I can see the fares either on itamatrix
http://matrix.itasoftware.com or, more longwinded, on BA website on the low price finder at
https://www.britishairways.com/travel/l ... blic/en_gb. This shows economy fares with 7 night duration by default, listing destinations on the North America tab by default. Just change travel class to Business and click "Find Lowest Price" button …. then play around with the number of nights (only allows day trip to max 14 nights as a range though) and click "Find Lowest Price" button again to see fare price changes by destination. Of course once you then click onto chosen destination you then see the months those fares are available in then click on month to see dates within month - by which time you find only one or two date combinations have flights at that price for that number of nights in that month to that destination ….. which is probably why folks use itamatrix (or Garble/Google Flights) I guess.
As an example - LHR to LAX then BA has March fares at £1669 (or £1653 with American) but they are all leaving on Tuesday, Wednesday or Thursday in the first three weeks of the month (except Thursday 21st when it's £1679) if you want 14-21 nights away, but all 4 weeks (except last Thursday 28th) leaving on Tuesday, Wednesday or Thursday if you want 7-14 nights away..... the Friday through Monday departures are more like £2700 in comparison on that route in March.
EDIT:LHR-SFO is similar but priced at £1469 on those Tuesday through Thursday March departures.
Good hunting!