Season 15 · Adventure

Expedition Unknown 2025 (season 15): U.S. release date, episode schedule and where to watch

Season 15 of Expedition Unknown aired from June 18, 2025 to August 6, 2025 on Discovery (7 episodes).

Season complete Cable Verified November 3, 2026

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Quick answer

Expedition Unknown season 15 ran from June 18, 2025 to August 6, 2025 on Discovery (7 episodes).

U.S. premiere: June 18, 2025
Where: Cable
Time: Varies by station
Episodes: 7
Finale: August 6, 2025

Season 15 episode schedule (U.S.)

Expedition Unknown season 15 U.S. episode schedule
Ep.	Title	U.S. date	Time	Status
1	Hitler's Amerikabomber	Wed, Jun 18, 2025 ^[1]	Check local listings national slot	Listed
2	The Man-Eating Lions of Kenya	Wed, Jun 25, 2025 ^[1]	Check local listings national slot	Listed
3	The Lost Grave of Buffalo Bill	Wed, Jul 2, 2025 ^[1]	Check local listings national slot	Listed
4	Shipwreck Triangle of Greece	Wed, Jul 9, 2025 ^[1]	Check local listings national slot	Listed
5	Treasure of the Pirate Queen	Wed, Jul 16, 2025 ^[1]	Check local listings national slot	Listed
6	Searching for World War II's Lost Hero	Wed, Jul 30, 2025 ^[1]	Check local listings national slot	Listed
7	Mystery Ruins of the Stone Age	Wed, Aug 6, 2025 ^[1]	Check local listings national slot	Listed

Broadcast times are the network's national slot and your local station may differ. Streaming times are converted to your time zone when your browser allows it.

Where to watch season 15

Where to watch Expedition Unknown season 15 in the U.S.
Where	How	When	Notes
Cable	Broadcast (free)Antenna / cable	June 18, 2025 – August 6, 2025	Original U.S. run on Discovery. [1]

Common questions

When was the first episode of Expedition Unknown season 15?

Season 15 episode 1 premiered on Wednesday, June 18, 2025 on Discovery.

How many episodes are in Expedition Unknown season 15?

Season 15 has 7 episodes; the finale aired on Wednesday, August 6, 2025.

About Expedition Unknown

Expedition Unknown is an adventure and mystery series that aired on Discovery, running since 2015 with 17 seasons and 161 episodes. Expedition Unknown is still running; its most recent episode aired on August 12, 2026.

Where to watch every season of Expedition Unknown →