Narita and Haneda are not interchangeable outcomes.
Price the destination-side transfer and compare protection across joint-venture and codeshare offers.
What can reverse the ranking?
The lowest headline fare remains provisional until these route-specific decision layers have been checked.
- 01
Arrival airport changes ground time
Add the missing cost or protection difference to both offers before deciding.
- 02
Seller and operator rules can diverge
Verify the exact operating carrier and ticket structure on the final checkout screen.
- 03
Last domestic connections narrow recovery
Compare the schedule after a plausible delay, not only when every flight runs on time.
Build a route decision in five passes.
PHYSICAL FLIGHT
Match route, date, times and ‘operated by’ before treating flight numbers as different options.
Open instrument ↗02VISIBLE TOTAL
Normalize fare, bags, seats and destination-side airport transfer for the full party.
Open instrument ↗03CONNECTION
Subtract a plausible arrival delay, real walking time and required processes from the layover.
Open instrument ↗04CONTRACT
Check whether every segment sits on one ticket and which carrier owns changes or refunds.
Open instrument ↗05RECOVERY
Prefer an itinerary with credible later options when two offers remain close.
Open instrument ↗Use a fare search to find candidates.
Use FlyPolicy to choose the outcome.
Check today’s offers with the seller, shortlist the strongest itineraries, then evaluate the complete journey in FlyPolicy.
Open current flight search ↗