Health Services Board recommends travelers get tested 1-3 days before traveling by plane internationally. See HSB Testing and International Air Travel for more information. Also, get tested 3-5 days after international air travel AND stay home for 7 days after travel. Even if you test negative, stay home for the full 7 days. If your test is positive, isolate yourself to protect others from getting infected. If you don’t get tested, it’s safest to stay home for 14 days after travel.
Testing does not eliminate all risk, but when combined with a period of staying at home and everyday precautions like wearing masks, social distancing, and handwashing, it can make travel safer by reducing spread on public transportation, in airports, and at destinations.