I have 350 Amex points, can I use them on a cheaper flight from US to Europe

You won’t be able to book a trans‑Atlantic flight with just 350 American Express Membership Rewards points—redemptions for U.S. → Europe travel typically require tens of thousands of points.

How many points are actually needed

• Business‑class awards on Air France/KLM can be secured for as low as 33 000 points after a transfer bonus  FrequentMiler .
• A similar deal from 2018 let you fly business class for 50 000 points plus a small fee  God Save the Points .
• The Amex Business Platinum 35 % rebate only applies when you first spend the full point cost (often ≥ 30 000 points) and then receive a rebate  One Mile at a Time FrequentMiler .

Why 350 points isn’t enough

• The “Pay With Points” option for flights values points at roughly one cent each, so 350 points would cover only about $3.50 of a fare  One Mile at a Time .
• Even the cheapest award‑sale fares mentioned (e.g., 20 000 Delta miles round‑trip) are far above the 350‑point level  View from the Wing .

What you can do with a small balance

• Keep accumulating points until you reach the thresholds shown above.
• Consider using the points for smaller redemptions (e.g., partial fare offsets, gift cards, or other Amex rewards) that accept lower point amounts.

In short, 350 Amex points are far short of the amount required for any U.S. → Europe flight redemption. You’ll need to build your balance into the tens of thousands before a trans‑Atlantic ticket becomes reachable.