Earlier this year I bought and used a somewhat complicated plane ticket: HEL–FRA–LNZ–FRA–SEA–SFO–HGH–PEK–MUC–HEL. This was a single business trip, so I wanted to buy it as a single ticket. However, none of the online booking systems I know would sell me a ticket. Some would not show any hits at all, and the others would not allow me to proceed with the purchase.
Example case: I contacted the ebookers customer service about my inability to purchase tickets for an itinerary that I was able to select in the online shop. I explained my problem and itinerary on the phone, and the customer service person got the same cryptic error message and was unable to help.
Eventually I decided to contact my employer's travel agent by email and ask them to find flights. They found the flights and I got my ticket, and all ended well. But I would have preferred to be able to see several ticket options online, and compare prices and schedules by hand. If I were to fly HEL–MUC–HEL instead, I would have used an online system to pick the flights that I like best.
Is there an online system that would allow me to buy tickets for complicated itineraries? For some reason every one I tried failed for this case, but suitable tickets do exist as proven by the person who found and sold one to me. Is there a site that can deal with more complicated itineraries than others?
Buying the legs of my trip separately (combining tickets for overlays but not longer stays) would have been possible, but far more expensive, perhaps by a factor of two or three.
(I was unable to find a narrower title. Feel free to suggest a better one!)