Hello

I have to fly to GAU so I pretty much have to connect from a major airport in India to get to Guwahati...last year I did DEL, but I can do BLR, CCU, etc.

What's the cheapest, generally speaking? I was going to connect via DEL but a flight from IAD to BLR might be cheaper...

Thoughts? I'm hoping to fly BA, CX, or JAL (for a 1 day stopover in Tokyo)