Cheap flights from Portland, ME to San Francisco, CA

Choose between United Airlines, Frontier Airlines, or Alaska Airlines to find the best price

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Tips to know when travelling to San Francisco

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The most popular airlines for this route are United Airlines, Frontier Airlines, Alaska Airlines, Spirit Airlines, and AeroMéxico. Portland and San Francisco have 76 direct flights per week. When you arrive at San Francisco, consider visiting Alcatraz, Big Sur, and Golden Gate Bridge.

Check-in for a flight from Portland to San Francisco

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
United AirlinesUALUAYesNo
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
AeroMéxicoAMXAMYes0
0

Weather in San Francisco

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January14°C7°C
February15°C8°C
March15°C8°C
April17°C9°C
May19°C10°C
June21°C12°C
July22°C13°C
August22°C14°C
September23°C14°C
October21°C13°C
November17°C10°C
December13°C8°C
Hottest Month
23°C
September
Coldest month
7°C
January
Sunny days
332
days per year

14 day forecast

Thursday
4 Apr
99%
11°C7°C
11 Apr
19°C13°C
Friday
5 Apr
92%
11°C6°C
12 Apr
17°C12°C
Saturday
6 Apr
12°C8°C
13 Apr
14°C11°C
Sunday
7 Apr
13°C8°C
14 Apr
16°C10°C
Monday
8 Apr
15°C8°C
15 Apr
17°C10°C
Tuesday
9 Apr
19°C11°C
16 Apr
15°C11°C
Wednesday
10 Apr
20°C13°C
17 Apr
13°C10°C

Frequently asked questions

What are the most popular routes to and from Portland?
What are the most popular routes to and from San Francisco?
What airports are near Portland?
What airports are near San Francisco?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Portland and San Francisco?
What is Virtual Interlining and how do I use it?
Which airlines fly between Portland and San Francisco?
When's the best time to travel between Portland and San Francisco?
What flights operate between Portland and San Francisco?
How many airports are there near Portland?
How many airports are there near San Francisco?
What time do nonstop (direct) flights between Portland and San Francisco depart?
What time do nonstop (direct) flights between Portland and San Francisco arrive?
What time do flights between Portland and San Francisco depart?
What time do flights between Portland and San Francisco arrive?

The nearest countries with flights to San Francisco

Here is a list of countries people are flying from

Other destination countries from Portland

Here is a list of countries people are flying to
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