I Used Codex to Search Flights From Multiple Starting Cities

Try Lian Wu (Mac): https://lianwu.app/yt I found lower fares by changing where the trip started. I used Codex with SerpApi to compare the same London trip from Taipei, Hong Kong, Singapore, and Kuala Lumpur. Codex organized the results into a shortlist, and I checked the strongest options on visible flight pages. The lowest fare wasn't always the trip I would choose. Positioning flights, timing, baggage, and separate-ticket risk could erase the savings. Every option assumes I will fly all ticketed segments. This is external-origin flight search, not hidden-city ticketing or skiplagging. Marvin Builds: real AI-agent workflow tests in public. Flight prices shown were recorded on 2026-07-12 for travel in September 2026 and may change. #Codex #AIAgents #FlightSearch #TravelTech #SerpApi