JAL Mileage Bank (JMB) is Japan Airlines’ loyalty program where you earn miles through flights and partners, then redeem them for award flights, upgrades (where eligible), and more. Separately, JAL status is primarily driven by FLY ON Points (FOP)—a different metric from redeemable miles.
The key idea:
- Miles = what you spend (awards, upgrades, partners)
- FOP = what you accumulate to qualify for elite status
This is where EconoMile becomes practical: it lets you compare fares, estimated FOP, and estimated miles side-by-side, including “efficiency” metrics like FOP per $100 and miles per $100.
Useful pages (English):
- Destinations overview (roundtrip from Tokyo): https://econo-mile.com/en/jal/tyo/roundtrip
- Route example (Tokyo ⇄ San Francisco, roundtrip): https://econo-mile.com/en/jal/tyo/roundtrip/sfo
1) Two different metrics: Miles vs. FOP
JMB Miles (redeemable)
Miles are the spendable currency in the program. Typical uses include:
- Award tickets
- Upgrades (rules vary by fare/route)
- Partner redemptions (rates and availability may change)
FLY ON Points (FOP)
FOP is mainly used to qualify for JAL elite tiers (e.g., JMB Crystal / Sapphire / JGC Premier / Diamond). Even on the same itinerary, miles and FOP can differ substantially depending on the ticket.
2) A simple mental model of how FOP works
FOP can be thought of as a combination of:
- a distance/earnings-based portion (often tied to the route and booking class)
- plus (sometimes) a boarding-bonus component, depending on fare rules
The exact rules depend on ticket type, booking class, and route. EconoMile’s value is that it shows estimated totals and the calculation breakdown (when expanded), so you can see why two tickets with similar fares may earn very differently.
3) Why EconoMile is useful for JMB planning
JMB planning gets tricky because:
- earnings can swing significantly by booking class
- status optimization (FOP) and award optimization (miles) do not always point to the same choice
- comparing “where to credit” (JAL vs. partner programs) is tedious without a unified view
EconoMile helps by showing:
- estimated fare ranges
- estimated FLY ON Points and miles
- efficiency metrics like FOP / $100 and Miles / $100
- (where supported) comparisons across programs (e.g., JAL vs BA vs American)
- comparisons across cabins (Economy / Premium Economy / Business / First)
4) How to use the Destinations Overview page (Tokyo roundtrip)
Page: https://econo-mile.com/en/jal/tyo/roundtrip
This page is designed for fast screening. For each destination you can compare:
- Price
- JAL: estimated FOP and FOP / $100
- JAL: estimated miles and Miles / $100
- (where available) other programs’ metrics (e.g., Tier Points, Avios, Loyalty Points)
A practical workflow:
- Start with FOP / $100 if your goal is status
- Cross-check Price and travel practicality
- If your goal is award travel, focus on Miles / $100 and your preferred program’s redemption options
On the right-side panel, you can:
- switch one-way / roundtrip
- change origin/destination
- filter airlines
- choose the credit program (JAL / BA / American where supported)
5) How to read a route detail page (example: Tokyo ⇄ San Francisco)
Page: https://econo-mile.com/en/jal/tyo/roundtrip/sfo
5.1 Route summary at the top
You’ll see a route-level range summary, such as:
- Fare range (example shown at one point): $1,091–$20,691
- Estimated FOP: 3,078–22,868 (e.g., 93–454 FOP / $100)
- Estimated miles: 3,078–21,668 (e.g., 88–409 miles / $100)
This gives you an instant view of how the economics change across ticket types and cabins.
5.2 Cabin cards (Economy / Premium Economy / Business / First)
Each cabin card summarizes:
- fare range
- estimated FOP and FOP efficiency per $100
- estimated miles and miles efficiency per $100
This makes it easy to decide whether you’re optimizing for:
- lower absolute price,
- higher FOP efficiency,
- higher miles efficiency,
- or comfort/time tradeoffs.
6) Flight List: booking class matters (a lot)
The Flight List breaks the route into ticket groups such as:
- Economy (Booking Class Q / S / N / …)
- Premium Economy (Booking Class E / W / …)
- Business (Booking Class X / D / …) …and shows, for each:
- fare (or a fare range)
- estimated FOP
- estimated miles
- efficiency metrics (per $100)
This is especially useful because two Economy tickets can produce very different outcomes:
- a cheaper fare may have a lower accrual rate,
- a slightly higher fare may yield meaningfully better FOP/miles efficiency.
7) Expand for calculation breakdown (FOP + miles)
On supported rows, expanding a flight shows the estimated formula components (illustrative example):
- distance (e.g., 5,130 mi)
- accrual percentage (e.g., 70%)
- boarding bonus (e.g., +400) when applicable
- totals for outbound + inbound
This helps answer: “Why is this booking class earning more?”
8) Recommended ways to use EconoMile (goal-based)
If your goal is JAL status (FOP)
- Compare options by FOP / $100
- Narrow down to realistic itineraries (duration, connections)
- Only then evaluate fare rules and booking constraints
If your goal is redeemable miles
- Compare by Miles / $100
- Consider your preferred redemption strategy (which program, which routes)
- If available, compare credit-to program (JAL vs BA vs American) for the same route
Notes & disclaimers
- This article is an overview for understanding and planning. Rules, accrual rates, bonus conditions, and benefits can change.
- Any numeric values shown here are examples from EconoMile screens at a point in time and may not reflect real-time availability.
- EconoMile’s fare ranges and estimated earnings are based on collected price data shown on each page and are not guaranteed to cover every date or fare condition. Always confirm final price, availability, and fare rules at booking.