[Hugh]

This is a 1943 First Flight cover from Oranjestad, Aruba to Miami ... and on to Falls Church, Virginia.

Stamp: Curacao [Curaçao]
Queen Wilhelmina / Airplane over the Atlantic Ocean
Luchtpost [Airmail]
Issued on October 20, 1942
35c, Dark Violent / Olive Green
NVPH LP35 / Sc. C23

Cancels:
Receiving Cancel: Double ring CDS with bar, black ink
+ ARUBA + / ORANJESTAO
[1?]6.8.43
I'm assuming there is a missing '1' in the data (there is a hint of ink) as the recorded date of this flight was August 16.

Arrival Cancel: Double ring, purple ink (on reverse)
FALLS CHURCH, VA / PARCEL POST
AUG / 23 / 1943

Auxiliary Markings:

Censor Mark: Curaçao
Hand-stamp, purple ink, 23mm
GEZIEN / CURACAO / CENSUUR [SEEN / CURACAO / CENSORSHIP]
Sealed with buff tape: EXAMINED BY 1889

KLM Cachet 1 - Printed on Cover, red and blue printing
KLM / Royal Dutch Airlines
Willemstad - Curaçao
New York, U.S.A
Lichtpost - Air Mail
Between the crossed US and Dutch Flags is a V and a dot-dot-dot-dash [Morse code for V = Victory]

First Flight Cachet 2 - On Reverse, hand-stamped, green ink.
Outer rim = EERSTE OFFICIEELE VLUCHT
Ribbon above route panel = FIRST OFFICIAL FLIGHT
Route panel CURAÇAO USA / WILLEMSTAD - ARUBA - HAITI / JAMAICA - CUBA / MIAMI FLORIDA
Centre image: Faint, but appears to be a plane over the Caribbean. I used an app called Image Sleuth to help bring out the faint elements of the cachet.

   
   
   

[RICHARD]

First flight U.S. Scott C2 July 15 1918 New York To Philadelphia

Picture of plane on the bottom wash used for inspiration for stamp design.

[RICHARD]

][b]1929 (Aug 7), American Flight, Lakehurst to Friedrichshafen Return (Michel 28 var.), Jun 4 Canadian flight cover, Toronto to Kingston, for the dedication of the Kingston Airport, Jun 4; then carried by rail, Kingston to Montreal (backstamped Jun 6); then by Air to New York/Lakehurst and via Zeppelin to Friedrichshafen (Aug 8 receiver); franked with $1.20 postage tied by a Toronto slogan cancel: 5¢ for Toronto-Kingston, 3¢ Kingston-Montreal, 5¢ Montreal-New York, and $1.05 Lakehurst-Friedrichshafen; total $1.18 - overpaid by 2¢., Fine to Very Fine. [i]Unlisted and, no doubt, unique.

[RICHARD]

Back  of Kingston cover. Picture of Kingston airport 1940 just before it closed at the bottom.Kingston Airfield, in Kingston, Ontario, Canada, operated from 1929–1942 as Kingston's first airport. It consisted of a grass strip and supporting buildings in what is now the Kingscourt subdivision of the city, just to the west of the St. Mary's cemetery. The city of Kingston purchased what was then the Reid Farm and leased it to the Kingston Flying Club, who operated a flight school using two Gipsy Moth aircraft.
The Kingston Airfield was a popular refueling stop between Toronto and Montreal, and in 1931, 1,400 transient aircraft were recorded using the field.[1]
The airport was closed in 1942 after a crash. After World War II, the Kingston Flying Club resumed operations at Norman Rogers Airport, west of the city, which had been built as a military field, and the original Kingston Airfield was redeveloped as a residential neighborhood.

[RICHARD]

Special Flight cover Jun 4 1929,Toronto, C1 5 cent rate.

[RICHARD]

Back of flight cover arrival cancel Kingston Jun 4 1929 Kingston Industrial Exhibition cancel, Canada Postal rates.

[RICHARD]

Toronto to Kingston C1, 5 cent Brown Toronto cancel Jun 4 1929, Opening of Kingston cachet, Air mail banner.

[RICHARD]

Back  via air Toronto to Kingston Received Jun 4 1929, Industrial Exhibition Cancel.

[Hugh]

Nice covers Richard. Especially, the Kingston cover that was continued on to Germany ... very cool. 

Cheers, Hugh

[RICHARD]

First Flight Scott 241 3 times the rate  Toronto Postal terminal June 2,1939. Atlantic flight.