The deployment, which the Pentagon said was pre-planned and short-term, comes against a backdrop of tension with Russia over unrest in Ukraine.
"It certainly is yet another demonstration of America's ironclad commitment to the NATO alliance," said Colonel Steve Warren, a Pentagon spokesman.
US military deployments have increased in recent weeks as Washington seeks to reassure Eastern European allies worried about Moscow's moves in the region.
The two B-2 bombers arrived yesterday at RAF Fairford in Gloucestershire, England, where they joined three other B-52 strategic bombers that got there on June 4.
Overseas deployments of the B-2 are rare, as the United States jealously guards the costly aircraft's secrets. There are only 20 B-2s in existence.
A B-2 bomber overflew South Korea last year during an exercise amid tensions with the North.
Based at Whiteman Air Force Base in Missouri, the B-2 were designed to penetrate the world's most formidable air defences and drop dozens of precision, conventional or nuclear bombs.
