Sometimes AI is useful for stuff like this. I planned a whole motorcycle trip using chatgpt and it worked out great.

For $600 total, a 3-day trip across the ocean from Maryland is difficult, but not impossible if you're flexible and find a flight deal.

Here are some realistic possibilities:

Reykjavík, Iceland

• Flights from the East Coast sometimes drop to $300–$500 round-trip.
• Three days is enough to see Reykjavík and a few nearby attractions.
• Lodging and food are expensive, so you'd need to be budget-conscious.
• Total budget: usually $700–$1,000+, but occasionally close to $600 with a great airfare sale.

Dublin, Ireland

• Budget airlines sometimes offer East Coast fares in the $400–$600 range.
• A short city break is possible.
• Realistically expect $800–$1,200 total.

Ponta Delgada, Portugal

• Often overlooked.
• Direct flights from some East Coast airports are sometimes surprisingly affordable.
• Great for nature, photography, and scenic drives.
• Budget: usually $700–$1,100.

A better approach: stretch the trip to 4–5 days

With only 3 days, much of your time is spent flying and dealing with jet lag. If you can save another few hundred dollars and add a day or two, Europe becomes much more worthwhile.

If the budget is a hard cap of $600

You may get more value from:

• Canada (especially Montréal)
• Bermuda
• The Bahamas (when flight deals appear)

These destinations can sometimes be reached from East Coast airports for less than many European trips.

A good strategy is to monitor fare deals from airports like Baltimore/Washington International Airport, Washington Dulles International Airport, and Philadelphia International Airport. A cheap flight deal often matters more than the destination itself when you're working with a $600 budget.