Southampton (SOU) to Phoenix (PHX) business class reward flights

PHX → SOU

Lowest seen in the last 14 daysPlus fees$823.19Program

Air France-KLM Flying BlueLight fareAirline

KLMDepartingThu, Dec 10

Last checked 13d agoChecked 9 Oct 2026, 04:03 UTC

Which program and airline costs you least

Southampton to Phoenix in business class starts at 88K miles plus $823.19 — KLM through Air France-KLM Flying Blue. Aer Lingus through Atmos Rewards charges the least cash — $409.29 — but wants 350K Atmos points.

Every way to book SOU to PHX with miles or points
Airline	Program			Book
KLMvia AMS, CDGlast seen 9 Oct, not re-checked sinceAir France-KLM Flying Blue	Air France-KLM Flying BlueLight fare	Fewest miles88Kplus $823.19	$823.19
Aer Lingusvia DUB, SEAlast seen 8 Oct, not re-checked sinceAtmos Rewards	Atmos Rewards	350K Atmos pointsplus $409.29	Lowest fees$409.29

Where the space is over the next 60 days

Dashed days are prices last seen more than 3 days ago and not re-checked since.

SOU to PHX in business class: the facts

Over the next 60 days we hold business class seats from Southampton to Phoenix on 28 of the 28 departure days we have checked so far (32 days are not checked yet), through 2 programs. These figures are counted from the seats stored for those dates, not from a price history; the typical day is the median of each day's cheapest seat. Data updated October 9, 2026.

Air France-KLM Flying Blue
Days with space
25 of 28 checked
Lowest
88,000 miles
Typical day
250,000 miles
Cash on top
$791 to $825
Atmos Rewards
Days with space
6 of 28 checked
Lowest
350,000 Atmos points
Typical day
400,000 Atmos points
Cash on top
$408 to $409

SOU to PHX business class seats per program over the next 60 days
Program	Days with space	Lowest	Typical day	Cash on top
Air France-KLM Flying Blue	25 of 28 checked	88,000 miles	250,000 miles	$791 to $825
Atmos Rewards	6 of 28 checked	350,000 Atmos points	400,000 Atmos points	$408 to $409

Nonstop or with a connection

No nonstop seats in the window. With a connection on Aer Lingus and KLM.

How to book it

Air France-KLM Flying Blue books on airfrance.fr: sign in there, search SOU to PHX in business class on a date with space, and pay in miles with the cash on top (from $791).
Atmos Rewards books on alaskaair.com: sign in there, search SOU to PHX in business class on a date with space, and pay in Atmos points with the cash on top (from $408).

MilesZone finds the seat; it does not book it or take payment.

More routes

Get told the moment a SOU → PHX seat opens.

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Email only. Searching this route stays free for departures in the next 60 days.