Frontier Airlines is currently offering cheap flights from New York (Newark) to San Francisco for as low as $91 return! That works out to a cost of just 1.7 Cents Per Mile for this 5200 mile long journey.
The fare only includes a small piece of carry-on luggage, so you will need to pay extra (possibly $100+) if you want to bring a trolley onboard or check bags. Also note, depending on the flight combination you select, you may have a long (overnight) layover in Las Vegas.
There are only a few select dates in September 2020 with availability at this price, with more dates available for 10-20 dollars more.
Sample date(s) with Skyscanner.com booking link
We post many cheap flights like this one from New York (Newark) to San Francisco every single day, so have a look at our Travel Deals page, or check out the related posts below!
Note: Prices are valid at the time of publishing this post, but may change in the future.
COVID-19 Note: During these uncertain times, please make sure to check the relevant Coronavirus restrictions for your destination before you book and before you fly. We recommend also checking the refund policy of the airline, as well as purchasing travel insurance for your trip.