Originally Posted by
skywardhunter
Yes EK applies married segment logic, however you might get an upgrade offer by email a few days before the trip for a discounted upgrade. Keep in mind the website often adds a change fee for cabin upgrade which is wrong, if you call they will waive it and only charge the fare difference so that might bring the cost to upgrade down a bit.
That isn't to do with married sector logic, just that the change of a one way journey will normally be the same price whether 1 sector is in business class or both are in business class - on a journey A-C via B , it would need to be 2 fares of A-B plus B-C to make sense to upgrade only 1 segment