Boston (BOS) → San Francisco (SFO)
About Boston to San Francisco Flights
Discover the best flights from Boston to San Francisco, covering 4,341 km in approximately 5h 56m. Boston (BOS) to San Francisco (SFO) is one of the popular medium-haul routes within United States. With 4 major airlines operating this route including direct flights, travelers have plenty of options to choose from. Whether you're traveling for business or leisure, our comprehensive guide helps you find the best deals, understand seasonal price variations, and choose the right airline for your journey from Boston to San Francisco.
12-Month Price History
Flight prices from Boston to San Francisco vary significantly throughout the year. February typically offers the best deals with average prices around $609, while July sees the highest prices, averaging $1032. Savvy travelers can save up to 41% by choosing their travel dates wisely.
Best Time to Fly
Cheapest Month
February
Save up to 40% on average
Most Expensive
July
Peak season pricing
Book in Advance
43 days
For best prices
Booking Tips
For the best prices on Boston to San Francisco flights, we recommend booking 86 days in advance. Domestic flights typically see price increases as the departure date approaches, so early booking is advisable. Tuesday and Wednesday departures often offer the lowest fares, while Friday and Sunday flights tend to be more expensive due to business and leisure travel demand. Consider flying early morning or late evening for additional savings, as these off-peak times usually have lower demand.
Airlines Serving This Route
| Airline | Economy | Business | First |
|---|---|---|---|
JetBlue Airways B6 | $810 | $2430 | - |
Delta Air Lines DL | $910 | $3610 | $5360 |
United Airlines UA | $1010 | $3010 | $5000 |
Alaska Airlines AS | $1030 | $3250 | $4890 |
JetBlue Airways
B6
Economy
$810
Business
$2430
First
-
Delta Air Lines
DL
Economy
$910
Business
$3610
First
$5360
United Airlines
UA
Economy
$1010
Business
$3010
First
$5000
Alaska Airlines
AS
Economy
$1030
Business
$3250
First
$4890
Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Alternative Flight Options
Hartford → San Francisco
Bradley International (BDL) to San Francisco International (SFO)
Distance: 4,214 km
Average price: $732
Portland → San Francisco
Portland International Jetport (PWM) to San Francisco International (SFO)
Distance: 4,372 km
Average price: $756
Boston → San Jose
Logan International (BOS) to San Jose International (SJC)
Distance: 4,316 km
Average price: $747
Boston → Oakland
Logan International (BOS) to Oakland International (OAK)
Distance: 4,324 km
Average price: $749
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Frequently Asked Questions
How long is the flight from Boston to San Francisco?
The flight time from Boston (BOS) to San Francisco (SFO) is approximately 5 hours and 56 minutes. This duration is for direct flights and may vary depending on aircraft type, weather conditions, and air traffic.
What is the distance between Boston and San Francisco?
The aerial distance between Boston and San Francisco is 4,341 kilometers (2,697 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from Boston to San Francisco?
Several airlines operate flights between Boston and San Francisco, including Delta Air Lines, United Airlines, Alaska Airlines and 1 more airlines. Direct flights are available on this route.
What is the cheapest month to fly from Boston to San Francisco?
Based on historical data, February typically offers the lowest airfares for flights from Boston to San Francisco. However, prices can vary based on holidays, events, and airline promotions. We recommend checking our price calendar for the most up-to-date information.
How far in advance should I book my flight to San Francisco?
For the best prices on Boston to San Francisco flights, we recommend booking 89 days in advance. Domestic flights can sometimes offer good last-minute deals, but advance booking is usually cheaper.
Do I need a visa to travel from Boston to San Francisco?
Visa requirements depend on your nationality and the purpose of your visit. Since this is a domestic flight, no visa is required for citizens.
What is the time difference between Boston and San Francisco?
Boston operates on America/New_York time zone, while San Francisco is in the America/Los_Angeles time zone. For current time differences and to plan your schedule, visit our partner site timezig.com for accurate timezone conversions.