Route guide

San Francisco to South Portland Gardens (SFO-PWM): Nonstop Upgrade & Award Space

United Airlines flies nonstop from San Francisco (SFO) to South Portland Gardens (PWM) just once a week. With so few departures, each one carries the only premium seats on the route that day. 2LNR tracks confirmed upgrade and award space on all of them, so a rare opening doesn't slip past you.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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1
Nonstop flights a week
2,717 mi
Nonstop distance
Free
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Confirmed upgrade & award space on every SFO to PWM departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for San Francisco to South Portland Gardens to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each SFO to PWM departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See SFO to PWM on the interactive route map, with schedules, connections, and route statistics.

Airlines flying San Francisco to South Portland Gardens nonstop

Carriers operating SFO to PWM nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • United Airlines
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Frequently asked questions about SFO to PWM

How far is South Portland Gardens from San Francisco?
SFO to PWM covers about 2,717 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from SFO to PWM?
United Airlines is currently the only airline flying SFO to PWM nonstop. 2LNR tracks confirmed upgrade and award space on every United Airlines departure.
How often does SFO to PWM operate?
The nonstop currently runs once a week, on United Airlines. Thin schedules like this change by season, and an alert will catch anything added.
How do I check upgrade or award availability on SFO to PWM?
Open the SFO to PWM calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the San Francisco to South Portland Gardens route, and 2LNR will notify you when space opens. It's free to start.

Never miss SFO to PWM upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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