Whatever you think about the likelihood of catching coronavirus, or infecting others, the biggest problem with planning international travel right now is not finding cheap flights, rather it is arranging adequate insurance. Most governments have produced lists of countries that they believe to be high-risk places to travel. If you visit countries on these lists you are deemed to be travelling against government advice and in most cases your travel insurance will be invalid. For North Americans, many European countries are on these lists, including France and Spain.
I travel a lot, over six months every year away from home leading guided tours and undertaking commissions to write guidebooks. I am 72 years of age and arranging travel insurance is becoming increasingly expensive. However, I would NEVER make an extensive foreign trip without adequate insurance. Earlier this year (pre-coronavirus) I had a road accident in Costa Rica. The hospital bill for post-accident operations and five weeks hospitalisation came to over $200,000. Thankfully this was paid by my travel insurance company.
For EU citizens travelling in the EU and some neighbouring countries, the position is slightly different. An EHIC card, available to all citizens, provides for free medical care throughout the EHIC zone. This does not fully replace the need for travel insurance, but it does cover the largest potential type of cost you might incur. So traveling to Spain is possible for EU citizens, though slightly risky, without travel insurance cover. I do not know if dual-nationality EU passport holders resident in North America qualify for EHIC, but if you are a dual-national it is worth finding out. Mind you, there is still the matter of potential repatriation costs after an accident/illness and these are not covered by EHIC.