Domestic route
Cheap flights from San Francisco to Boston
San Francisco International Airport (SFO) to Boston Logan International Airport (BOS). 2,697 miles, 5h 15m nonstop.
SFO to BOS at a glance
Computed from airline schedules and the fares we track for this route. Refreshed several times a day.
- Distance
- 2,697 milesgreat-circle
- Typical flight time
- 5h 15mnonstop, gate to gate
- Nonstop airlines
- DLUAB6AS4 airlinesDelta, United, JetBlue
- Nonstop flights per day
- 22all airlines combined
- Cheapest month
- February 2027over the next six months
- Best day to fly
- Wednesday20% less than Sunday
- Time difference
- 3h aheadBoston vs San Francisco
San Francisco to Boston
Round trips from $215
Per traveler, taxes and fees included. Lowest fare we found departs Tue, Feb 9.
Cheapest month: February 2027
See fares on these datesLock any fare free — pay only when you accept your last-minute deal
Or ask an agent on WhatsAppSan Francisco to Boston fares by month
Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.
Airlines flying San Francisco to Boston
4 airlines fly nonstop with 22 departures a day combined, plus 6 more with one stop.
- ASAlaska AirlinesoneworldNonstop · 7 flights a day · first checked bag from $35
- DLDelta Air LinesSkyTeamNonstop · 5 flights a day · first checked bag from $35
- B6JetBlueNonstop · 5 flights a day · first checked bag from $40
- UAUnited AirlinesStar AllianceNonstop · 5 flights a day · first checked bag from $40
- AAAmerican AirlinesoneworldConnecting via DFW, CLT, ORD, MIA, PHX, PHL, LAX, DCA, JFK · first checked bag from $40
- MXBreeze AirwaysLow-costConnecting via CHS, TPA, RDU, ORF · first checked bag from $45
- F9Frontier AirlinesLow-costConnecting via DEN, LAS, MCO, PHL, ATL, PHX, CLE · first checked bag from $55
- WNSouthwest AirlinesLow-costConnecting via DAL, HOU, MDW, BWI, DEN, LAS, PHX, MCO, ATL, BNA, LAX, SAN, STL, AUS · first checked bag from $35
- NKSpirit AirlinesLow-costConnecting via FLL, LAS, DTW, MCO, DFW, ATL, IAH · first checked bag from $55
- SYSun Country AirlinesLow-costConnecting via MSP · first checked bag from $45
Connecting options
Hubs where one airline can carry you on both legs, most choices first.
- Phoenix (PHX)AAWNF93 airlines
- Las Vegas (LAS)WNNKF93 airlines
- Orlando (MCO)WNNKF93 airlines
- Atlanta (ATL)WNNKF93 airlines
- Dallas (DFW)AANK2 airlines
Which airport should I use?
San Francisco has 3 airports. Fares can differ by $50 to $150 round trip between them, so check the alternatives before you book.
Tips for this route
- Delta, United, JetBlue and Alaska all fly SFO to BOS nonstop, so compare the total with bags before picking the lowest base fare: the difference between a basic and a standard economy ticket is often less than one checked bag each way.
- February 2027 is the cheapest month to fly over the next six months, with round trips from $215; September 2026 is the most expensive at $295 and up, a difference of $80 per traveler.
- Departing on a Wednesday averages 20% less than a Sunday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
- Fares on this route are usually lowest 4 to 8 weeks before departure and rise sharply inside two weeks.
- Boston is 3 hours ahead of San Francisco. Expect to lose 3 hours on the clock heading east, so an overnight or late-afternoon departure tends to arrive at a more usable hour.
Destination guide
Boston: Revolutionary history in a walkable harbor city
Boston is compact, historic and easy: Logan Airport is minutes from downtown, the Freedom Trail links the sights, and fall in New England starts here. JetBlue and Delta hubs mean strong fare competition.
Best time to visit: Late September–October for foliage and crisp weather, May–June for spring. Summer is warm and busy; winter is cold but has the lowest prices.
Flying the other way? Boston to San FranciscoFares, airlines and tips for BOS to SFO.Ready to compare live fares?
See every airline on SFO–BOS side by side with bags and seat rules spelled out.
Search San Francisco to BostonSan Francisco to Boston: common questions
How long is the flight from San Francisco to Boston?
A nonstop flight from San Francisco (SFO) to Boston (BOS) takes about 5h 15m gate to gate, covering 2,697 miles. Connecting itineraries add the layover, typically 1 to 3 hours more in total.
Which airlines fly nonstop from SFO to BOS?
Delta Air Lines, United Airlines, JetBlue and Alaska Airlines operate nonstop flights from San Francisco (SFO) to Boston (BOS), with 22 nonstop departures a day between them. One-stop options connect through PHX, LAS and MCO.
What is the cheapest month to fly from San Francisco to Boston?
Over the next six months, February 2027 has the lowest round-trip fares from San Francisco (SFO) to Boston (BOS), starting at $215 per traveler including taxes and fees. Within any month, Wednesday departures average the lowest prices.
How far in advance should I book San Francisco to Boston flights?
Fares on this route are usually lowest 4 to 8 weeks before departure and rise sharply inside two weeks. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.
What is the time difference between San Francisco and Boston?
Boston is 3 hours ahead of San Francisco. SFO is on America/Los Angeles time and BOS on America/New York time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
Other popular city pairs from the same departure city and to the same destination, with the lowest round-trip fares we found.
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