http://www.stampcollectioninfo.com/airmail-postal/
Airmail Parcel Post AK to NZ.....how long does it take?
How long does Airmail Parcel Post take to get from Alaska to New Zealand?
This is using the Unitied states postal service (and please don't tell me to go to their website).
I don't know if this helps any, but I have sent dozens of parcels to British Columbia, Canada and on average each takes ten working days via Airmail. Hope that gives you a rough idea. 
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 UXC2 5c Eagle Airmail Postal Card FDC Unsigned Day Lowry Cachet $1.50 (1 Bid) Time Remaining: 2h 4m |
 UXC3 5c Eagle Airmail Postal Card with Red Blue Border FDC Aristocrats Lowry $1.50 (1 Bid) Time Remaining: 2h 4m |
 UC11 UPSS A33 Canal Zone Postal Stationery Air Mail 1971 to Nicaragua stk80 $4.99 Time Remaining: 3h 18m |
 U16 UPSS 50Canal Zone Postal Stationery envelope air mail use 1962 stk 39 $2.99 Time Remaining: 3h 18m |
 U21 UPSS 82 Canal Zone Postal Stationery Registered Air Mail 1975 stk 62 $9.99 Time Remaining: 3h 18m |
 UXC8 13c Visit USA Airmail Postal Card FDC Artmaster $0.50 Time Remaining: 3h 52m |
 UXC9 8c Eagle Airmail Postal Card FDC Artmaster Cachet $0.50 Time Remaining: 4h 20m |
 POPS STUFF PB3 AIRMAIL PLATE BLOCK C42 C44UNIVERSAL POSTAL UNION SET MNH $0.99 Time Remaining: 5h 22m |
 Postal Commemorative Society 22kt Gold Replica of US Stamp Air Mail Issue 1918 $5.89 Time Remaining: 6h 11m |
 UXC5 11c Visit the USA Airmail Postal Card FDC SIPEX Cachet $0.50 Time Remaining: 7h 49m |
 USA 1971 AIR MAIL BLAINE TO SURREY COVER 11994 POSTAL STATIONERY $9.09 Time Remaining: 17h 52m Buy It Now for only: $9.09 |
 Scott C42 Universal Postal Union MNH F VF $1.00 Time Remaining: 21h 12m Buy It Now for only: $1.00 |
 4 Cent United Nations Air Mail Postal Card $0.99 Time Remaining: 21h 53m |
 Kitty HawkNorth Carolina National Air Mail Week NAMW Postal History Cover 1938 $0.99 Time Remaining: 21h 59m |
 Airmail Postal Cards Set of 12 Mint Cards SCUXC8 24 $7.50 Time Remaining: 23h 53m Buy It Now for only: $7.50 |
 UC26 blue Skymaster Airmail Postal Stationery First Day of Issue VELVETONE $9.00 Time Remaining: 23h 56m Buy It Now for only: $9.00 |
 UC26 blue Skymaster Airmail Postal Stationery First Day of Issue Dayton OH $7.00 Time Remaining: 23h 56m Buy It Now for only: $7.00 |
 US Scott C126 Universal Postal Congress SS of 4 MNH $3.69 Time Remaining: 1d 1h 48m Buy It Now for only: $3.69 |
 UXC8 13c Visit USA Airmail Postal Card FDC Fleetwood Cachet $0.50 Time Remaining: 1d 1h 49m Buy It Now for only: $1.00 |
 UXC8 13c Visit USA Airmail Postal Card FDC Artmaster $0.50 Time Remaining: 1d 4h 10m Buy It Now for only: $1.00 |
 UXC8 13c Visit USA Airmail Postal Card FDC ArtCraft Cachet $0.50 Time Remaining: 1d 4h 24m Buy It Now for only: $1.00 |
 27 POSTAL COMMEMORATIVE SOCIETY COVERS 50 YEARS OF US AIRMAIL STAMPS W HISTORY $9.99 Time Remaining: 1d 5h 8m |
 UXC5 11c Visit the USA Airmail Postal Card FDC SIPEX Cachet $0.50 Time Remaining: 1d 5h 52m Buy It Now for only: $1.00 |
 LOT Space Airmail FDCs Postal Congress Sheets $20.00 Time Remaining: 1d 6h 1m |
 USA COVER ENVELOPE 1944 AIR MAIL ARMU POSTAL SERVICE $86.00 Time Remaining: 1d 14h 19m Buy It Now for only: $86.00 |
 USA 1980 AIR MAIL TO INDIA COVER 20903 POSTAL STATIONERY FRANK C LAUBACH $9.09 Time Remaining: 1d 16h 35m Buy It Now for only: $9.09 |
 USA 1990 AIR MAIL TO INDIA COVER UNIVERSAL POSTAL CONGRESS 20670 AEROPLANE $9.09 Time Remaining: 1d 16h 39m Buy It Now for only: $9.09 |
 USA 1993 AIR MAIL TO INDIA COVER 20923 POSTAL STTAIONERY GEORGE WASHINGTON $9.09 Time Remaining: 1d 16h 39m Buy It Now for only: $9.09 |
 Postal History Cover Commercial Airmail Hotel Whitcomb San FranciscoCA 1927 $3.00 Time Remaining: 1d 21h 29m |
 1938 POSTAL CLERKS UNION INDUS EXHIBITION AIRMAIL COVER $37.00 Time Remaining: 2d 5m Buy It Now for only: $37.00 |
 Scotts C126 UNIVERSAL POSTAL CONGRESS Sheet of 4 MNH $4.75 Time Remaining: 2d 21m Buy It Now for only: $4.75 |
 5 different mint older airmail postal stationaries $0.99 Time Remaining: 2d 1h 15m |
 US MINT AIR MAIL POSTAL STATIONARY AEROGRAMMES $3.99 Time Remaining: 2d 2h 1m |
 AIR MAIL 6 CNET POSTAL CARD BOY SCOUT WORLD JAMBOREE IDAHO PENCIL ADDRESSED FDC $1.10 Time Remaining: 2d 2h 17m Buy It Now for only: $1.10 |
 Airmail Flight Ioor Cachets C42 C44 UPU Universal Postal Union Set of 3 $7.99 Time Remaining: 2d 9h 47m Buy It Now for only: $7.99 |
 USA 1980 AIR MAIL TO INDIA COVER 21777 POSTAL STATIONERY NEW MEXICO TO BOMBAY $9.09 Time Remaining: 2d 15h 5m Buy It Now for only: $9.09 |
 USA 1982 AIR MAIL TO INDIA AMERICAN SCHOOL DOME POSTAL STATIONERY COVER 21543 $6.06 Time Remaining: 2d 15h 7m Buy It Now for only: $6.06 |
 USA 1982 AIR MAIL TO INDIA POSTAL STATIONERY AMERICAN SCHOOL COVER 21580 $6.06 Time Remaining: 2d 15h 8m Buy It Now for only: $6.06 |
 USA 1983 AIR MAIL 21614 COVER POSTAL STATIONARY WALTER LIPPMANN FRANK LAUBACH $6.06 Time Remaining: 2d 15h 9m Buy It Now for only: $6.06 |
 USA PENNA 1982 COVER 22134 POSTAL STATIONERY AIRMAIL CASTLE $9.09 Time Remaining: 2d 17h 15m Buy It Now for only: $9.09 |
 USA PENNA 1982 COVER 22135 POSTAL STATIONERY AIRMAIL CASTLE $9.09 Time Remaining: 2d 17h 15m Buy It Now for only: $9.09 |
 USA PENNA TO INDIA 1983 COVER 22130 POSTAL STATIONERY AIRMAIL CASTLE $9.09 Time Remaining: 2d 17h 17m Buy It Now for only: $9.09 |
 USA SOMERS POINT 1969 AIR MAIL TO WEST GERMANY COVER POSTAL STATIONARY FRANK $4.75 Time Remaining: 2d 17h 25m Buy It Now for only: $4.75 |
 Air Mail Postal Card 4 cent United Nations Stamp $3.67 Time Remaining: 2d 17h 50m Buy It Now for only: $3.67 |
 USA Air Mail Postal Stationery 15+ Cut Squares UC7 UC47 Mint 2012 Sc CV 10+ $5.00 Time Remaining: 2d 17h 51m Buy It Now for only: $5.00 |
 ScUXC11 15c Airmail Postal Card First Day Cover $1.90 Time Remaining: 2d 20h 23m Buy It Now for only: $1.90 |
 Lot of 100 US POSTAL 6 CENT COMEMMORATIVE BILLS $13.99 Time Remaining: 2d 21h 10m Buy It Now for only: $13.99 |
 UNITED STATES FIRST DAY COVER 1974 POSTAL STATIONARY AIRMAIL $0.99 Time Remaining: 2d 21h 48m |
 UNITED STATES FIRST DAY COVER 1983 POSTAL STATIONARY AIRMAIL 84 OLYMPICS $0.99 Time Remaining: 2d 21h 48m |
 UNITED STATES FIRST DAY COVER 1974 POSTAL STATIONARY AIRMAIL NATO 25TH ANNIV $0.99 Time Remaining: 2d 21h 48m |