$173 Find Cheap Flights from Boston to San Francisco - Compare and Save

These are the earliest and latest flight times available from Boston to San Francisco:

• Earliest: departs at 6:00 am and lands at 12:41 pm
• Latest: departs at 9:35 pm and lands at 4:16 am.

The flight takes about 6h 41m.

Four cabin classes are available on flights from Boston to San Francisco:

• Economy Class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

A nonstop flight from Boston to San Francisco takes 6h 41m, covering 2,696 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from Boston to San Francisco range from $323 to $546, with an average of $411 over the past 12 months. Anything below $323 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 41% above the $411 route average. Book 15 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $310 round-trip via Atlanta Hartsfield-Jackson (ATL), compared to $412 for nonstop.

United Airlines is slightly above the route average for timely arrivals, while Delta has a lower on-time arrival rate. On-time arrival rates on Boston to San Francisco flights are:

• United Airlines: 80% on time
• Delta: 79% on time
• JetBlue: 76% on time

Overall, flights on this route are punctual 78% of the time on average.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Airbus A318/A319/A320/A321 family is used most often on this route, operated mainly by JetBlue. Other aircraft seen on the route include Airbus A321neo variants.

Morning is the busiest departure period on Boston to San Francisco flights, with 51% of flights leaving in that window. Evening departures account for 28%, afternoon flights for 21%, and night flights for 0%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $328 to $2,080. That means the highest observed fare was about 6x higher than the lowest one.

Two airlines offer in-flight Wi-Fi on Boston to San Francisco flights:

• JetBlue
• Delta

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

One-way fares from Boston to San Francisco are currently lower than usual. Average one-way flight prices are about $176, which is 36% below the typical average for this route.

San Francisco Airport (SFO) hosts 5 major car rental companies, with daily rates starting from around $15 for economy cars. Top options include:

• Thrifty
• Europcar
• Dollar
• Hertz
• Fox

Flights from Boston to San Francisco usually depart from Boston Logan Intl (BOS) and arrive at San Francisco (SFO).

Night flights have the fewest delays on this route, while evening departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Boston to San Francisco route, 22% of flights were delayed in the past 3 months, with delays averaging 2h 51m.

One-stop flights from Boston to San Francisco most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) - 32% of one-stop connections
• Chicago O'Hare Intl (ORD) - 11% of one-stop connections
• Philadelphia (PHL) - 7% of one-stop connections
• San Diego (SAN) - 6% of one-stop connections

Yes. Flexible dates can save you up to 27% on flights from Boston to San Francisco. Wednesday is the cheapest departure day at $377 round-trip on average, while Sunday is the most expensive at $510, a difference of $133.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

3 airlines operate flights between Boston and San Francisco. The airlines offering nonstop flights on this route include:

• United Airlines
• JetBlue
• Delta

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 7h 32m, compared with 7h 42m via Lambert-St Louis (STL) and 8h 17m via Salt Lake City (SLC).

San Francisco is 3 hours behind Boston (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in San Francisco are Fisherman's Wharf, Union Square and Moscone Center. These are among the most viewed places in San Francisco on KAYAK.

Among airlines operating Boston to San Francisco flights:

• JetBlue: offers extra legroom; offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection
• Delta: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• JetBlue: a cabin bag and a checked bag in Economy Class
• United Airlines: a cabin bag and a checked bag in Economy Class
• Delta: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Lyft and Uber Domestic pickups are on Level 5 of the Domestic Garage. Domestic drop-offs are at the Domestic Terminal curbside. All other rides can be met at the departures level. Lyft and Uber Black and Black SUV rides can be met at the Arrivals Level at Domestic Terminals 1, 2 and 3.

SFO has a free cell phone lot near the long-term parking lot for drivers waiting to meet arriving friends or family. Vehicles are not permitted to wait at the terminal curbside or on airport roadways. The maximum waiting time in the cell phone lot is 60 minutes.

Yes, car rental garages are located on McDonnell Road. The free AirTrain Blue runs every day through the airport's main terminals and parking garages, stopping at the car rental garage.

Yes. SFO offers assistance for travelers with disabilities and limited mobility. At the International Terminal, passengers should go to their airline's assigned counter for directions, where airline representatives can assist with wheelchairs. Paging services are available by calling 1.800.I.FLY.SFO or 650.821.8211 and selecting "2".

At San Francisco International Airport (SFO), pets that are traveling in the baggage compartment will be delivered at the baggage claim area. If you instead brought your pet using your airline’s cargo service, you must contact your airline directly. Each airline has its own off-site cargo office location where you can retrieve your pet after your flight.

Yes, Boston Logan International Airport (BOS) has several parking options, including the Central Parking Garage, which is linked to all terminals and the Terminal B Garage next to Terminal B. Exit Express Parking Pay Station is also available in the garages and terminals.

No, mailboxes are outside each terminal building at SFO.