Route guide

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

United Airlines flies nonstop from South Portland Gardens (PWM) to San Francisco (SFO) 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 PWM to SFO 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 South Portland Gardens to San Francisco 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 PWM to SFO 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 PWM to SFO on the interactive route map, with schedules, connections, and route statistics.

Airlines flying South Portland Gardens to San Francisco nonstop

Carriers operating PWM to SFO 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 PWM to SFO

How far is San Francisco from South Portland Gardens?
PWM to SFO 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 PWM to SFO?
United Airlines is currently the only airline flying PWM to SFO nonstop. 2LNR tracks confirmed upgrade and award space on every United Airlines departure.
How often does PWM to SFO 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 PWM to SFO?
Open the PWM to SFO calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the South Portland Gardens to San Francisco route, and 2LNR will notify you when space opens. It's free to start.

Never miss PWM to SFO upgrade or award space

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

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