$115 Cheap United flights Madison (MSN) to San Francisco (SFO)

Finding cheap one-way United Airlines flights from MSN to SFO from $115 on Expedia is a breeze — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly round-trip fares from $232 for your next adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

United Airlines flights to San Francisco are generally more affordable in the low-season months of February and April. Whether you’re searching for a one-way or round-trip ticket, you could land a better deal then.

Look for cheap United Airlines flights from Dane County Regional Airport (MSN) to San Francisco Intl. Airport (SFO) one to three months ahead of your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and journey, the best day of the week to book a domestic flight is usually Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Use our “Nonstop” filter when searching for direct United Airlines flights from MSN to SFO. It’s also an easy way to compare other airlines servicing the same nonstop trip.

To find the earliest departure from MSN to SFO with United Airlines, sort your results by “Morning” and “Early Morning.” Choosing an early flight usually means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

San Francisco Intl. Airport (SFO) is the main San Francisco hub for United Airlines flights from Dane County Regional Airport (MSN).

With a rewarding loyalty program, United Airlines is a top choice for many travelers heading from MSN to SFO. Plus, if you’re a United Mileage Plus and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the type of fare you purchased, a fee may apply if you cancel or change your booking more than 24 hours after it has been confirmed. To find flexible plane tickets, select our “Changes included” or “No cancel fee” filter when you look for flights. To learn more about canceling or modifying your reservation, go to “Trips,” select your flight and tick “Manage Booking.”