TAP Portugal has loaded low fall one way fares for USA to Europe travel via Lisbon. Beginning in October 2019 San Francisco to Rome one way is $243 one way with possibility of staying nearly 21 hours in Lisbon between flights or as little as one hour.
One way flights from Rome to SFO price around $250 one way.
Tap Portugal has a promotion offering a discount of $24 on SFO-FCO and 20 EUR ($22.79) on FCO-SFO tickets reducing the round trip ticket price to $456 when you redeem 100 TAP Portugal miles per ticket.
If like me, you have no TAP Portugal miles, you can acquire TP miles by several hotel points methods including these below.
TAP Portugal San Francisco SFO – Lisbon LIS (overnight layover) – Rome FCO one way
$221.65 + 100 miles or $245.65 Sat Oct 5, 2019
Flying on a short layover saves $2.00.
TAP Portugal Rome FCO – Lisbon LIS (overnight layover) – San Francisco SFO
There are cheaper ticket prices through online travel agency for some of these flights if you do not have Tap Portugal miles for the promotion discount.
Booking.com TAP Portugal Rome FCO – Lisbon LIS (overnight layover) – San Francisco SFO
$250.60 one way Sun Oct 13
Even though these cheap TAp Portugal economy O code tickets do not earn miles, I am considering booking TAP Portugal one way flights for fall travel to take advantage of the 100 TP miles discount rate. I have Star Alliance Gold status through Aegean Airlines and will be able to access airport lounges in SFO, Lisbon and Rome.
There are also slightly higher TAP Portugal ticket prices SFO to Venice, Amsterdam and Paris at $250-$275 one way.