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Loyalty Program Devaluation Index
Latest prices: October 2026Checked Oct 16 – Oct 21, 2026Site updated Oct 21, 2026Next update: November 2026
Programs / Delta SkyMiles

Delta SkyMiles

Delta SkyMiles is an airline program based in the Americas. In October 2026 (prices checked October 16–21), one Delta SkyMiles mile bought a median of 1.15¢ of travel across 6 priced searches on the same 3 flights checked every month; on the 6 searches priced in both September and October, its value rose 1.5%. One mile bought 1.15¢ in September and 1.14¢ in August.

What 50,000 miles bought$575 in October$576 in September · $569 in August
Change since September+1.5%on the 6 searches priced in both months, each compared with itself
Change since August+0.7%each month’s same-search change, chained over 3 months
Checks with a price18 of 18every search returned a price
Table 1. About Delta SkyMiles · as of Aug 13, 2026
Publishes an award chart?NoSee the source
Did prices in miles change?Yes, on 2 of 3 itemsacross 18 mile prices seen
Need an account to see prices?NoAward prices are visible to anyone
Partner programs to redeem with25See the source
Credit card points that transfer in1 card programAmex MR 1:1
Published valuationsTPG 1.20¢ · NerdWallet 1.20¢How these compare

Notes from collection: “saw conflicting sources on skymiles partner airline count”

Item by item

What one mile bought on each flight, every month. Each item is checked twice: about 60 days before travel and about 180 days before.

Booked ~60 days aheadBooked ~180 days ahead× no price that month
Chart 1. Detroit → Orlando
DTW–MCO · Economy
0.91¢1.25¢1.70¢AugSepOct
Chart 2. Atlanta → Seoul
ATL–ICN · Economy
0.91¢1.25¢1.70¢AugSepOct
Chart 3. Atlanta → Seoul
ATL–ICN · Business
0.91¢1.25¢1.70¢AugSepOct

All 3 charts share one scale, so their heights compare directly.

Chart 4. Every check compared with published valuations · 18 checks
Each checkMiddle checkTPGNerdWalletCents per point.
1¢1.5¢

Grey dots are individual checks. The white tick is the middle value. TPG and NerdWallet each publish one number per program; this index shows the whole range.

Every check, with its screenshot

Each row is one search. Click a thumbnail to open the screenshot it came from: “a” is the points search, “c” the cash search.

  • Atlanta → Seoul · Business1.48¢
    Aug (R1) · booked ~60 days ahead · travel Oct 14
    499,900 points + $6.00 · cash $7,402.00
  • Atlanta → Seoul · Business1.38¢
    Aug (R1) · booked ~180 days ahead · travel Feb 10
    499,900 points + $6.00 · cash $6,902.00
  • Atlanta → Seoul · Economy1.11¢
    Aug (R1) · booked ~60 days ahead · travel Oct 14
    83,700 points + $6.00 · cash $934.00
  • Atlanta → Seoul · Economy1.10¢
    Aug (R1) · booked ~180 days ahead · travel Feb 10
    122,100 points + $6.00 · cash $1,347.00
  • Detroit → Orlando · Economy1.16¢
    Aug (R1) · booked ~60 days ahead · travel Oct 14
    12,300 points + $6.00 · cash $149.00
  • Detroit → Orlando · Economy1.11¢
    Aug (R1) · booked ~180 days ahead · travel Feb 10
    28,100 points + $6.00 · cash $319.00
  • Atlanta → Seoul · Business1.38¢
    Sep (R2) · booked ~60 days ahead · travel Nov 4
    499,900 points + $6.00 · cash $6,902.00
  • Atlanta → Seoul · Business1.38¢
    Sep (R2) · booked ~180 days ahead · travel Mar 3
    499,900 points + $6.00 · cash $6,902.00
    “created urgency by including "1 left at this price"”
  • Atlanta → Seoul · Economy1.11¢
    Sep (R2) · booked ~60 days ahead · travel Nov 4
    81,300 points + $6.00 · cash $909.00
  • Atlanta → Seoul · Economy1.10¢
    Sep (R2) · booked ~180 days ahead · travel Mar 3
    122,100 points + $6.00 · cash $1,347.00
  • Detroit → Orlando · Economy1.14¢
    Sep (R2) · booked ~60 days ahead · travel Nov 4
    16,500 points + $6.00 · cash $194.00
  • Detroit → Orlando · Economy1.16¢
    Sep (R2) · booked ~180 days ahead · travel Mar 3
    12,300 points + $6.00 · cash $149.00
  • Atlanta → Seoul · Business1.47¢
    Oct (R3) · booked ~60 days ahead · travel Dec 16
    499,900 points + $6.00 · cash $7,352.00
  • Atlanta → Seoul · Business1.47¢
    Oct (R3) · booked ~180 days ahead · travel Apr 14
    499,900 points + $6.00 · cash $7,352.00
  • Atlanta → Seoul · Economy1.09¢
    Oct (R3) · booked ~60 days ahead · travel Dec 16
    146,700 points + $6.00 · cash $1,612.00
  • Atlanta → Seoul · Economy1.08¢
    Oct (R3) · booked ~180 days ahead · travel Apr 14
    124,700 points + $6.00 · cash $1,347.00
  • Detroit → Orlando · Economy1.16¢
    Oct (R3) · booked ~60 days ahead · travel Dec 16
    12,300 points + $6.00 · cash $149.00
  • Detroit → Orlando · Economy1.14¢
    Oct (R3) · booked ~180 days ahead · travel Apr 14
    17,400 points + $6.00 · cash $204.00
MonthItemBookedPointsPlus cashCash priceOne pointScreenshotsNotes
Aug (R1)
checked Aug 17
Atlanta → Seoul · Business~60 days
Oct 14 · 58d
499,900$6.00$7,402.001.48¢
Aug (R1)
checked Aug 17
Atlanta → Seoul · Business~180 days
Feb 10 · 177d
499,900$6.00$6,902.001.38¢
Aug (R1)
checked Aug 17
Atlanta → Seoul · Economy~60 days
Oct 14 · 58d
83,700$6.00$934.001.11¢
Aug (R1)
checked Aug 17
Atlanta → Seoul · Economy~180 days
Feb 10 · 177d
122,100$6.00$1,347.001.10¢
Aug (R1)
checked Aug 17
Detroit → Orlando · Economy~60 days
Oct 14 · 58d
12,300$6.00$149.001.16¢
Aug (R1)
checked Aug 17
Detroit → Orlando · Economy~180 days
Feb 10 · 177d
28,100$6.00$319.001.11¢
Sep (R2)
checked Sep 8
Atlanta → Seoul · Business~60 days
Nov 4 · 57d
499,900$6.00$6,902.001.38¢
Sep (R2)
checked Sep 8
Atlanta → Seoul · Business~180 days
Mar 3 · 176d
499,900$6.00$6,902.001.38¢
created urgency by including "1 left at this price"
Sep (R2)
checked Sep 8
Atlanta → Seoul · Economy~60 days
Nov 4 · 57d
81,300$6.00$909.001.11¢
Sep (R2)
checked Sep 8
Atlanta → Seoul · Economy~180 days
Mar 3 · 176d
122,100$6.00$1,347.001.10¢
Sep (R2)
checked Sep 8
Detroit → Orlando · Economy~60 days
Nov 4 · 57d
16,500$6.00$194.001.14¢
Sep (R2)
checked Sep 8
Detroit → Orlando · Economy~180 days
Mar 3 · 176d
12,300$6.00$149.001.16¢
Oct (R3)
checked Oct 19
Atlanta → Seoul · Business~60 days
Dec 16 · 58d
499,900$6.00$7,352.001.47¢
Oct (R3)
checked Oct 19
Atlanta → Seoul · Business~180 days
Apr 14 · 177d
499,900$6.00$7,352.001.47¢
Oct (R3)
checked Oct 19
Atlanta → Seoul · Economy~60 days
Dec 16 · 58d
146,700$6.00$1,612.001.09¢
Oct (R3)
checked Oct 19
Atlanta → Seoul · Economy~180 days
Apr 14 · 177d
124,700$6.00$1,347.001.08¢
Oct (R3)
checked Oct 19
Detroit → Orlando · Economy~60 days
Dec 16 · 58d
12,300$6.00$149.001.16¢
Oct (R3)
checked Oct 19
Detroit → Orlando · Economy~180 days
Apr 14 · 177d
17,400$6.00$204.001.14¢