Points vs Cash: When Frequent-Flyer Miles Actually Beat Paying Cash

The frequent-flyer mile has a reputation problem. Half the internet says miles are secretly worthless because airlines devalue them constantly. The other half says miles are the greatest travel hack alive and you should be churning credit cards to accumulate them. Both camps are overstating. The reality is colder and more useful: miles are worth something specific, on specific redemptions, on specific routes — and worth considerably less on everything else.

The test that resolves the question is mechanical, fast, and works for any programme. Here is how to run it.

The cents-per-point test

Every airline mile or credit card point has a cash equivalent value when redeemed on a specific flight. To find it:

1. Find the cash price of the flight you want to book.
2. Find the points/miles cost of the same flight.
3. Calculate: (Cash price ÷ Points required) × 100 = cents per point.

Example: A Delta SkyMiles redemption for a JFK to CDG business-class seat costs 95,000 miles. The same seat costs $3,200 in cash.

($3,200 ÷ 95,000) × 100 = 3.37 cents per mile

Is that good? You need a benchmark. Here's the industry-standard minimum threshold:

Currency	Break-even value	Good value
Delta SkyMiles	1.2 cpp	1.8+ cpp
United MileagePlus	1.3 cpp	2.0+ cpp
American AAdvantage	1.4 cpp	2.0+ cpp
British Airways Avios	1.0 cpp (1.0p per Avios)	1.5+ cpp
Amex Membership Rewards	1.4 cpp (transfer rate dependent)	2.0+ cpp
Chase Ultimate Rewards	1.5 cpp (via UR portal)	2.2+ cpp

If your redemption returns below break-even, you are better off paying cash and keeping the miles for a better use. If it returns above good value, redeem immediately — these opportunities are time-limited.

The JFK-CDG Delta example above returns 3.37 cpp, well above the break-even and good-value thresholds. That's a legitimately excellent use of SkyMiles.

Why business class redemptions dominate the math

The cents-per-point calculation heavily favours premium cabin redemptions. Here's why:

Business class cash prices on transatlantic routes typically run $2,500 to $5,000 round trip. The miles required to book the same seat are often a fixed or semi-fixed multiplier of the economy redemption price — not a proportional reflection of the cash price premium.

United MileagePlus pricing for economy JFK-LHR: approximately 30,000 miles. For business class (Polaris): approximately 70,000 miles. The cash ratio between economy and business on that route is roughly 1:4 to 1:6. The miles ratio is 1:2.3. Business class redemptions are structurally underpriced in miles relative to their cash value.

This is not a secret. It's why most experienced miles collectors focus their redemptions on premium cabins where the cash-to-miles ratio is most distorted in the traveller's favour.

The Avios system: a different structure

British Airways Avios uses a distance-based pricing model. The cost in Avios depends on the distance flown in miles, divided into bands. This creates specific inefficiencies that work either for or against you.

Avios works well on short-haul. London Heathrow to Nice (NCE) is 644 miles. In British Airways' Avios chart, that's 4,500 Avios + ~£17 in taxes for a one-way economy seat. The cash price of that ticket in mid-season: £80 to £140. At 4,500 Avios for an £80 fare, the value is roughly 1.4p per Avios — acceptable, but not exciting.

Avios works brilliantly on specific partner sweet spots. Avios transfers to Iberia Plus at 1:1. Iberia prices its own long-haul economy differently from BA. A New York JFK to Madrid (MAD) round trip can be priced at 34,000 Avios in economy on Iberia — when the cash price is £450 to £600. At 34,000 Avios, that's 1.3p to 1.8p per Avios — consistently good. Business class on the same route can hit 68,000 Avios when cash costs £2,800: 4.1p per Avios, an excellent result.

Avios works poorly on long, tax-heavy routes. London Heathrow to Tokyo in business class on British Airways requires 85,000 Avios — but the carrier-imposed surcharges (the YQ/YR fuel surcharge component) add £500 to £700 in taxes. The net value drops sharply when you include the cash tax component. For BA long-haul, always calculate the all-in cash-equivalent including taxes, not just the Avios cost.

SkyMiles: the devaluation poster child, still occasionally worth it

Delta's SkyMiles programme removed its award chart in 2024 and moved to fully dynamic pricing — meaning the miles cost of a flight is calculated in real time based on cash demand. This makes SkyMiles values extremely variable.

The upside of dynamic pricing: when Delta has a low-demand flight, the SkyMiles cost can drop proportionally. A DEN to JFK one-way economy in February (soft demand) might price at 8,000 to 11,000 miles where the cash fare is $120 to $160. At 8,000 miles for $120, that's 1.5 cpp — acceptable. In July on a high-demand flight, the same route might price at 28,000 miles for $230 — 0.82 cpp, well below break-even. The miles check is required every single time.

The tool for SkyMiles: Delta's own app shows the miles cost live next to the cash price. Run the calculation before confirming any SkyMiles redemption. Reject any sub-1.2 cpp result.

MileagePlus: the partner transfer value

United MileagePlus is strongest when used for partner airline redemptions. United's partners include Lufthansa, ANA, Singapore Airlines, TAP, Copa, and others. Booking a partner flight through MileagePlus sometimes accesses inventory at a fixed Saver award rate that reflects the pre-dynamic-pricing era.

A concrete example: ANA business class from Chicago ORD to Tokyo NRT. If booked through ANA's own frequent-flyer programme (ANA Mileage Club), pricing can be 88,000 miles round trip in business. If booked through United MileagePlus as a partner award, the same seats sometimes price at 88,000 to 110,000 miles depending on availability. Cash price for ORD-NRT in business: $4,000 to $5,500. At 88,000 MileagePlus miles for $4,500 in value, that's 5.1 cpp — among the highest values accessible in US-based frequent-flyer programmes.

When to pay cash instead

Paying cash beats miles on:

• Economy redemptions under 1.5 cpp (typical)
• Any redemption within 72 hours of departure, when last-minute fare drops often bring cash prices below what the miles are worth
• Heavily taxed itineraries where carrier surcharges add hundreds in cash on top of the miles
• Routes where your programme has reduced inventory or dynamic pricing inflates the miles cost

The inverse is the core rule: use miles for premium cabins, off-peak transatlantic or transpacific, with confirmed saver-level availability. That's where the maths reliably beats cash.

The key to maximising miles is catching premium cabin availability before it sells out at the saver level — which often vanishes weeks before departure as partner programmes release and recall inventory. Flyozo monitors cash fare movements on routes you care about, helping you time both cash bookings and miles redemptions: if the cash fare drops, you rebook. If it stays high, you use the miles at the rate you've already verified makes sense.