Treaty on Open Skies

Opened for signature at Helsinki: 24 March 1992
 
Entered into force: 1 January 2002
 
Depositary Governments: Canada and Hungary
State Signature Deposit Deposit Type
Belarus 24 March 1992  
24 March 1992  
Budapest
Ottawa
2 November 2001  
2 November 2001  
Budapest
Ottawa
Ratification
Ratification
Belgium 24 March 1992  
24 March 1992  
Budapest
Ottawa
28 June 1995  
28 June 1995  
Budapest
Ottawa
Ratification
Ratification
Bosnia and Herzegovina 21 August 2003  
26 August 2003  
Budapest
Ottawa
Accession
Accession
Bulgaria 24 March 1992  
24 March 1992  
Budapest
Ottawa
15 April 1994  
15 April 1994  
Budapest
Ottawa
Ratification
Ratification
Canada 24 March 1992 *
24 March 1992 *
Budapest
Ottawa
21 July 1992  
21 July 1992  
Budapest
Ottawa
Ratification
Ratification
Croatia 2 November 2004  
2 November 2004  
Budapest
Ottawa
Accession
Accession
Czech Republic 24 March 1992  
24 March 1992  
Budapest
Ottawa
21 December 1992  
21 December 1992  
Budapest
Ottawa
Ratification
Ratification
Denmark 24 March 1992  
24 March 1992  
Budapest
Ottawa
21 January 1993  
21 January 1993  
Budapest
Ottawa
Ratification
Ratification
Estonia 24 March 2005  
24 March 2005  
Budapest
Ottawa
Accession
Accession
Finland 12 December 2002 *
13 December 2002  
Budapest
Ottawa
Accession
Accession
France 24 March 1992  
24 March 1992  
Budapest
Ottawa
30 July 1993  
30 July 1993  
Budapest
Ottawa
Ratification
Ratification
Georgia 24 March 1992  
24 March 1992  
Budapest
Ottawa
31 August 1998  
31 August 1998  
Budapest
Ottawa
Ratification
Ratification
Germany 24 March 1992  
24 March 1992  
Budapest
Ottawa
27 January 1994  
27 January 1994  
Budapest
Ottawa
Ratification
Ratification
Greece 24 March 1992  
24 March 1992  
Budapest
Ottawa
9 September 1993  
9 September 1993  
Budapest
Ottawa
Ratification
Ratification
Hungary 24 March 1992  
24 March 1992  
Budapest
Ottawa
11 August 1993  
11 August 1993  
Budapest
Ottawa
Ratification
Ratification
Iceland 24 March 1992  
24 March 1992  
Budapest
Ottawa
25 August 1994  
25 August 1994  
Budapest
Ottawa
Ratification
Ratification
Italy 24 March 1992  
24 March 1992  
Budapest
Ottawa
28 October 1994  
31 October 1994  
Budapest
Ottawa
Ratification
Ratification
Kyrgyzstan 15 December 1992  
15 December 1992  
Budapest
Ottawa
Latvia 13 December 2002  
13 December 2002  
Budapest
Ottawa
Accession
Accession
Lithuania 9 May 2005  
9 May 2005  
Budapest
Ottawa
Accession
Accession
Luxembourg 24 March 1992  
24 March 1992  
Budapest
Ottawa
28 June 1995  
28 June 1995  
Budapest
Ottawa
Ratification
Ratification
Netherlands 24 March 1992  
24 March 1992  
Budapest
Ottawa
28 June 1995  
28 June 1995 *
Budapest
Ottawa
Ratification
Ratification
Norway 24 March 1992  
24 March 1992  
Budapest
Ottawa
14 July 1993  
14 July 1993  
Budapest
Ottawa
Ratification
Ratification
Poland 24 March 1992  
24 March 1992  
Budapest
Ottawa
17 May 1995 *
29 May 1995 *
Budapest
Ottawa
Ratification
Ratification
Portugal 24 March 1992  
24 March 1992  
Budapest
Ottawa
22 November 1994  
22 November 1994  
Budapest
Ottawa
Ratification
Ratification
Romania 24 March 1992  
24 March 1992  
Budapest
Ottawa
5 June 1994  
5 June 1994  
Budapest
Ottawa
Ratification
Ratification
Russian Federation 24 March 1992  
24 March 1992  
Budapest
Ottawa
2 November 2001  
2 November 2001  
Budapest
Ottawa
Ratification
Ratification
Slovakia 24 March 1992  
24 March 1992  
Budapest
Ottawa
21 December 1992  
21 December 1992  
Budapest
Ottawa
Ratification
Ratification
Slovenia 27 July 2004  
27 July 2004  
Budapest
Ottawa
Accession
Accession
Spain 24 March 1992 *
24 March 1992 *
Budapest
Ottawa
18 November 1993  
18 November 1993  
Budapest
Ottawa
Ratification
Ratification
Sweden 28 June 2002 *
28 June 2002 *
Budapest
Ottawa
Accession
Accession
Turkey 24 March 1992  
24 March 1992  
Budapest
Ottawa
30 November 1994 *
1 December 1994  
Budapest
Ottawa
Ratification
Ratification
Ukraine 24 March 1992  
24 March 1992  
Budapest
Ottawa
20 April 2000  
20 April 2000  
Budapest
Ottawa
Ratification
Ratification
United Kingdom of Great Britain and Northern Ireland 24 March 1992  
24 March 1992  
Budapest
Ottawa
8 December 1993 *
8 December 1993 *
Budapest
Ottawa
Ratification
Ratification
United States of America 24 March 1992  
24 March 1992  
Budapest
Ottawa
3 December 1993 *
3 December 1993 *
Budapest
Ottawa
Ratification
Ratification

* A note, statement, declaration, or reservation, is attached to the signature or depository action. Click on the action date to view the details.

  Glossary of treaty-related terms

Number of Signatory States: 27
Number of States Parties: 34