Note: Made using ChatGPTv4-o prompt!

You’ve shared 6 flight sets, and I’ve compiled all the fares for Air India, ANA, and JAL (all nonstop, round-trip, HND–DEL) in JPY.


✈️ Summary of All Flights Shared

AirlineDate TypePrice (JPY)CO₂ EmissionsNotes
Air IndiaWeekday¥82,130407 kg (−27%)Constant across weekdays
Air IndiaWeekday¥82,130407 kgRepeated entry
Air IndiaWeekend¥82,130407 kg
Air IndiaWeekend¥169,330407 kgOne high weekend fare
Air IndiaWeekday¥82,130407 kgReconfirmed low fare
ANAWeekday¥142,230428 kg (−23%)Lower weekday price
ANAWeekday¥142,230428 kgRepeated fare
ANAWeekend¥195,730428 kg
ANAWeekday¥195,730428 kgRepeated fare
ANAWeekday¥195,730428 kg
JALWeekday¥115,430447 kg (−20%)Lower weekday fare
JALWeekday¥115,430447 kgRepeated fare
JALWeekday¥92,930447 kgOne discounted fare
JALWeekend¥154,430447 kgHigher weekend fare
JALWeekend¥632,8901,788 kg (+222%)Extremely high premium fare
JALWeekday¥250,430447 kgVery high weekday fare

📊 Price Averages by Airline & Day Type

AirlineAvg. Weekday PriceAvg. Weekend PriceEmissions Range
Air India¥82,130¥125,730 (avg of 82k + 169k)407 kg
ANA¥177,230¥195,730428 kg
JAL¥138,565¥393,660 (avg of 154k + 632k)447–1,788 kg

🧠 Analysis Table: Air India vs ANA & JAL (Weekdays vs Weekends)

CriteriaAir IndiaANAJAL
Avg. Weekday Price¥82,130¥177,230¥138,565
Avg. Weekend Price¥125,730¥195,730¥393,660
Price StabilityVery stable (flat ¥82k most days)Stable but highHighly volatile (¥92k–¥632k)
CO₂ Emissions407 kg (−27%)428 kg (−23%)Up to 1,788 kg (+222%)
Best for Budget✅ Clearly the lowest❌ Double the cost❌ Often 3–5× more
Best for Comfort/Status❌ Basic service✅ Premium Japanese✅ Premium + elite pricing
Weekend Fare Inflation+53% over weekday avg+10% over weekday avg+184% over weekday avg

📌 Key Insights

  1. Air India dominates weekday prices, consistently offering fares at ~¥82,000.
  2. Weekend Air India fare jumped to ¥169,330 once—still cheaper than JAL or ANA.
  3. ANA is expensive but consistent, with minimal change from weekday to weekend.
  4. JAL prices are volatile, ranging from ¥92,930 to ¥632,890, with one fare emitting 1,788 kg CO₂e+222% higher than average!
  5. Air India offers best value-for-money, with the lowest emissions and fares, especially for economy travelers.

I made this comparison of Tokyo->Delhi flight prices to find why JAL was so expensive for one of my friends who recently visited India. I think the reason is that their weekend flight prices are super inflated and the regular prices are high due to larger CO2 comsumption, which points to lower mileage per unit fuel, perhaps due to the older engines. ANA is the best choice overall optimizing cost, punctuality and comfort, while Air India is easily the most cost effective albiet usually with ~30mins delay. All other logistics are the same, for instance the departure airport and schedule and flight duration. However, Japanese companies are, perhaps, contrained to only book JAL flights when they are available for business trip routes.