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Find cheap United Airlines flights to San Francisco

CMH — SFO
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find United Airlines flight deals to San Francisco

Cheapest United Airlines flights from USA to San Francisco
Explore the most affordable United Airlines flight options available from USA to San Francisco. Find the lowest fares with prices last updated on July 27, 2026.

This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:45 am
LAX
-
SFO
Nonstop1h 27m
United Airlines
Sat 8/156:45 pm
SFO
-
LAX
Nonstop1h 42m
United Airlines
Deal found 7/22$97
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/201:25 pm
LAX
-
SFO
Nonstop1h 27m
United Airlines
Mon 8/245:41 pm
SFO
-
LAX
Nonstop1h 37m
United Airlines
Deal found 7/27$117
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:01 am
ONT
-
SFO
Nonstop1h 29m
United Airlines
Wed 9/24:45 pm
SFO
-
ONT
Nonstop1h 31m
United Airlines
Deal found 7/24$117

Flights to San Francisco with United Airlines at a glance

Find detailed information about United Airlines flights from USA to San Francisco. Explore the options provided by United Airlines to plan your journey from USA to San Francisco. Data last updated July 27, 2026.

Popular in

June

Cheapest in

October

Average price

$393

Round-trip from

$97

One-way from

$59

Good round-trip deal

$360 or less

Good one-way deal

$181 or less
Highest demand for flights to San Francisco with United Airlines; 12% potential price increase.
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Best time to find cheap flights to San Francisco with United Airlines; 1% potential price drop.
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Average price for flights to San Francisco with United Airlines (round-trip).
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United Airlines
  • United Airlines
  • 8/12-8/15
  • Nonstop
  • 3h 09m total
  • USA to San Francisco
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United Airlines
  • United Airlines
  • 8/15
  • Nonstop
  • 1h 27m total
  • USA to San Francisco
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Price to beat on a round-trip flight from the United States to San Francisco with United Airlines.
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Price to beat on a one-way flight from the United States to San Francisco with United Airlines.
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Cheapflights Insights

Find cheap United Airlines flights to San Francisco

How long is the flight to San Francisco with United Airlines?

On average, United Airlines flights from the United States to San Francisco take 4 hours 7 minutes. Flights to San Francisco from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

United Airlines weekly flight availability to San Francisco

The most flights to San Francisco operated by United Airlines are scheduled on a Sunday (366 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (249 on average).

When is the best time to book a flight to San Francisco with United Airlines?

The best time to book a flight to San Francisco with United Airlines is 21 days before departure. On average, fares are higher if you book 3 days before departure.

When is the cheapest time to fly to San Francisco with United Airlines?

Users looking for the cheapest United Airlines fares to San Francisco should consider flying on Friday at noon, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday evenings, when prices are usually at their highest.

FAQs about flights to San Francisco with United Airlines

  • Which airport do United Airlines flights arrive at when travelling to San Francisco?

    United Airlines flights on this route tend to land at San Francisco Airport.

  • Is United Airlines the cheapest airline for a flight to San Francisco?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to San Francisco tends to be with Spirit Airlines.

  • Are there alternative airlines other than United Airlines that fly to San Francisco?

    American Airlines, Delta and Frontier all fly to San Francisco and offer an alternative to United Airlines.

  • How much is a flight to San Francisco with United Airlines?

    The average price for a return flight with United Airlines is $423; with a one-way flight around $317.

See more FAQs

Reviews of United Airlines

See what Cheapflights users have to say about their United Airlines experience.
United Airlines
7.4
Good
10,000 reviews
Overview

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Popular United Airlines flights

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