Portuguese national airline TAP is offering cheap return flights from Paris, France to Washington D.C. in the United States for as low as 264 euros. That works out to 3 euro cents per mile flown, a very good price for a full-service airline.
There are many dates available September through December 2020. Flights have a layover in Lisbon, Portugal, and the price does not include checked bags.
If you’re still not sure it’s safe to travel during the summer and would prefer to wait a few more months, this is a good chance to visit the American capital. The weather is likely to still be warm in September, so try booking one of the earlier dates.
Here is an example itinerary in September