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Signal
Submitted
Feb 1, 2026, 00:14 UTC
Finnair will suspend daily flights between Helsinki and Tartu from April 29 to May 31, 2024, due to GPS interference affecting flight approaches at Tartu Airport.
Finnair announced the suspension of its daily flights to Tartu, Estonia, from April 29 to May 31, 2024, because GPS interference at Tartu Airport currently prevents safe aircraft approaches. The airline typically uses GPS-based approach methods, but interference in the region has made these approaches unreliable, forcing two Finnair flights to divert to Helsinki recently. During this period, Finnair aims to develop alternative approach methods at Tartu Airport that do not require GPS signals, enabling safe and smooth operations. Passengers with bookings between Helsinki and Tartu during the suspension period will receive cancellation messages and option information. Finnair is the only airline operating international flights to Tartu. GPS interference, which has increased since 2022, is noted especially near Kaliningrad, the Black Sea, the Caspian Sea, and the Eastern Mediterranean, but typically does not affect flight safety as pilots can use alternative navigation systems. Jari Paajanen, Finnair's Director of Operations, emphasized flight safety as the top priority and explained the suspension's necessity.
Confidence: High
The event explicitly describes GPS interference impacting flight safety and operations at Tartu Airport, forcing Finnair to suspend flights; this indicates hostile GPS jamming or EW activity in the region near Kaliningrad, consistent with Russian hybrid aggression tactics. No defense or mitigation efforts by allied states during the event are reported, so it is classified solely as aggressor activity.
Source URL
https://company.finnair.com/en/media-centre/all-releases/news?id=2568789F7B492403
Published as a hybrid-warfare signal with a public source and reviewer-approved assessment bands. See the methodology for how records are assessed.
{
"id": "48bbea03-f3b9-4a77-8f47-727ca27ad223",
"url": "https://company.finnair.com/en/media-centre/all-releases/news?id=2568789F7B492403",
"source": "csv-import",
"status": "approved",
"category": "Energy & Infrastructure Attacks",
"subcategory": "Critical Infrastructure Sabotage",
"incident_type": "Unknown",
"country": "Estonia",
"source_reliability": "C",
"info_credibility": "3",
"tags": [
"Finnair",
"flight suspension",
"Tartu Airport",
"gnss interference",
"aviation safety",
"GPS jamming",
"Estonia",
"Kaliningrad region",
"air navigation",
"flight diversion"
],
"nodes": [],
"countries": [],
"where_text": "Airspace",
"headline": "Finnair suspends flights to Tartu for a month due to GPS interference",
"description": "Finnair will suspend daily flights from Helsinki to Tartu Airport, Estonia, from April 29 to May 31, 2024, due to GPS interference affecting navigation and approach methods at Tartu Airport. The GPS interference, common in the region and increasing since 2022, has led to recent diversion of flights to Helsinki. Finnair will build alternative approach methods that do not require GPS signals during this time. The airline is the only international operator serving Tartu. Customers affected will receive cancellations and details via text or email. Finnair prioritizes safety as GPS-dependent approaches cannot be used safely with interference. The interference is prevalent near areas including Kaliningrad and surrounding seas, but pilots use other navigation aids elsewhere. Contact and social media details are provided for further information.",
"summary_short": "Finnair will suspend daily flights between Helsinki and Tartu from April 29 to May 31, 2024, due to GPS interference affecting flight approaches at Tartu Airport.",
"summary_extended": "Finnair announced the suspension of its daily flights to Tartu, Estonia, from April 29 to May 31, 2024, because GPS interference at Tartu Airport currently prevents safe aircraft approaches. The airline typically uses GPS-based approach methods, but interference in the region has made these approaches unreliable, forcing two Finnair flights to divert to Helsinki recently. During this period, Finnair aims to develop alternative approach methods at Tartu Airport that do not require GPS signals, enabling safe and smooth operations. Passengers with bookings between Helsinki and Tartu during the suspension period will receive cancellation messages and option information. Finnair is the only airline operating international flights to Tartu. GPS interference, which has increased since 2022, is noted especially near Kaliningrad, the Black Sea, the Caspian Sea, and the Eastern Mediterranean, but typically does not affect flight safety as pilots can use alternative navigation systems. Jari Paajanen, Finnair's Director of Operations, emphasized flight safety as the top priority and explained the suspension's necessity.",
"actor_primary": null,
"target_primary": null,
"location_text": "Estonia",
"location_region": null,
"location_coordinates_lat": 58.595272,
"location_coordinates_lon": 25.013607,
"location_precision": "Regional",
"is_aggressor_signal": true,
"signal_type": "HYBRID_SIGNAL",
"is_hybrid_war_signal": true,
"classification_complete": true,
"hybrid_signal_complete": true,
"classification_confidence": "High",
"classification_rationale": "The event explicitly describes GPS interference impacting flight safety and operations at Tartu Airport, forcing Finnair to suspend flights; this indicates hostile GPS jamming or EW activity in the region near Kaliningrad, consistent with Russian hybrid aggression tactics. No defense or mitigation efforts by allied states during the event are reported, so it is classified solely as aggressor activity.",
"event_time_utc": "2024-04-29T00:00:00.000Z",
"end_time_utc": "2024-05-31T00:00:00.000Z",
"event_time_confidence": "pm24h",
"created_at": "2026-02-01T00:14:31.652Z",
"updated_at": "2026-11-09T00:15:01.060Z",
"reliability_band": "strong",
"location_precision_band": "regional",
"time_precision_band": "within_24h",
"severity_band": "moderate",
"attribution_confidence_band": "low",
"attribution_basis": "single_source"
}Source reliability
C
Info credibility
3
Event time
Apr 29, 2024, 00:00 UTC
End time
May 31, 2024, 00:00 UTC
Event time confidence
pm24h
Location
Estonia
Country
Estonia
Tags
Finnair, flight suspension, Tartu Airport, gnss interference, aviation safety, GPS jamming, Estonia, Kaliningrad region, air navigation, flight diversion
Signal
Submitted
Feb 1, 2026, 00:14 UTC
Finnair will suspend daily flights between Helsinki and Tartu from April 29 to May 31, 2024, due to GPS interference affecting flight approaches at Tartu Airport.
Finnair announced the suspension of its daily flights to Tartu, Estonia, from April 29 to May 31, 2024, because GPS interference at Tartu Airport currently prevents safe aircraft approaches. The airline typically uses GPS-based approach methods, but interference in the region has made these approaches unreliable, forcing two Finnair flights to divert to Helsinki recently. During this period, Finnair aims to develop alternative approach methods at Tartu Airport that do not require GPS signals, enabling safe and smooth operations. Passengers with bookings between Helsinki and Tartu during the suspension period will receive cancellation messages and option information. Finnair is the only airline operating international flights to Tartu. GPS interference, which has increased since 2022, is noted especially near Kaliningrad, the Black Sea, the Caspian Sea, and the Eastern Mediterranean, but typically does not affect flight safety as pilots can use alternative navigation systems. Jari Paajanen, Finnair's Director of Operations, emphasized flight safety as the top priority and explained the suspension's necessity.
Confidence: High
The event explicitly describes GPS interference impacting flight safety and operations at Tartu Airport, forcing Finnair to suspend flights; this indicates hostile GPS jamming or EW activity in the region near Kaliningrad, consistent with Russian hybrid aggression tactics. No defense or mitigation efforts by allied states during the event are reported, so it is classified solely as aggressor activity.
Source URL
https://company.finnair.com/en/media-centre/all-releases/news?id=2568789F7B492403
Published as a hybrid-warfare signal with a public source and reviewer-approved assessment bands. See the methodology for how records are assessed.
{
"id": "48bbea03-f3b9-4a77-8f47-727ca27ad223",
"url": "https://company.finnair.com/en/media-centre/all-releases/news?id=2568789F7B492403",
"source": "csv-import",
"status": "approved",
"category": "Energy & Infrastructure Attacks",
"subcategory": "Critical Infrastructure Sabotage",
"incident_type": "Unknown",
"country": "Estonia",
"source_reliability": "C",
"info_credibility": "3",
"tags": [
"Finnair",
"flight suspension",
"Tartu Airport",
"gnss interference",
"aviation safety",
"GPS jamming",
"Estonia",
"Kaliningrad region",
"air navigation",
"flight diversion"
],
"nodes": [],
"countries": [],
"where_text": "Airspace",
"headline": "Finnair suspends flights to Tartu for a month due to GPS interference",
"description": "Finnair will suspend daily flights from Helsinki to Tartu Airport, Estonia, from April 29 to May 31, 2024, due to GPS interference affecting navigation and approach methods at Tartu Airport. The GPS interference, common in the region and increasing since 2022, has led to recent diversion of flights to Helsinki. Finnair will build alternative approach methods that do not require GPS signals during this time. The airline is the only international operator serving Tartu. Customers affected will receive cancellations and details via text or email. Finnair prioritizes safety as GPS-dependent approaches cannot be used safely with interference. The interference is prevalent near areas including Kaliningrad and surrounding seas, but pilots use other navigation aids elsewhere. Contact and social media details are provided for further information.",
"summary_short": "Finnair will suspend daily flights between Helsinki and Tartu from April 29 to May 31, 2024, due to GPS interference affecting flight approaches at Tartu Airport.",
"summary_extended": "Finnair announced the suspension of its daily flights to Tartu, Estonia, from April 29 to May 31, 2024, because GPS interference at Tartu Airport currently prevents safe aircraft approaches. The airline typically uses GPS-based approach methods, but interference in the region has made these approaches unreliable, forcing two Finnair flights to divert to Helsinki recently. During this period, Finnair aims to develop alternative approach methods at Tartu Airport that do not require GPS signals, enabling safe and smooth operations. Passengers with bookings between Helsinki and Tartu during the suspension period will receive cancellation messages and option information. Finnair is the only airline operating international flights to Tartu. GPS interference, which has increased since 2022, is noted especially near Kaliningrad, the Black Sea, the Caspian Sea, and the Eastern Mediterranean, but typically does not affect flight safety as pilots can use alternative navigation systems. Jari Paajanen, Finnair's Director of Operations, emphasized flight safety as the top priority and explained the suspension's necessity.",
"actor_primary": null,
"target_primary": null,
"location_text": "Estonia",
"location_region": null,
"location_coordinates_lat": 58.595272,
"location_coordinates_lon": 25.013607,
"location_precision": "Regional",
"is_aggressor_signal": true,
"signal_type": "HYBRID_SIGNAL",
"is_hybrid_war_signal": true,
"classification_complete": true,
"hybrid_signal_complete": true,
"classification_confidence": "High",
"classification_rationale": "The event explicitly describes GPS interference impacting flight safety and operations at Tartu Airport, forcing Finnair to suspend flights; this indicates hostile GPS jamming or EW activity in the region near Kaliningrad, consistent with Russian hybrid aggression tactics. No defense or mitigation efforts by allied states during the event are reported, so it is classified solely as aggressor activity.",
"event_time_utc": "2024-04-29T00:00:00.000Z",
"end_time_utc": "2024-05-31T00:00:00.000Z",
"event_time_confidence": "pm24h",
"created_at": "2026-02-01T00:14:31.652Z",
"updated_at": "2026-11-09T00:15:01.060Z",
"reliability_band": "strong",
"location_precision_band": "regional",
"time_precision_band": "within_24h",
"severity_band": "moderate",
"attribution_confidence_band": "low",
"attribution_basis": "single_source"
}Source reliability
C
Info credibility
3
Event time
Apr 29, 2024, 00:00 UTC
End time
May 31, 2024, 00:00 UTC
Event time confidence
pm24h
Location
Estonia
Country
Estonia
Tags
Finnair, flight suspension, Tartu Airport, gnss interference, aviation safety, GPS jamming, Estonia, Kaliningrad region, air navigation, flight diversion