Trip.com
>
Flights
>
Flights to United States
>
Flights to Massachusetts
>
Flights to Boston
Hotels in Boston
>
Flights from San Francisco to Boston

Cheapest airlines flights from San Francisco to Boston

You can choose from 3 airlines that fly from San Francisco to Boston, including Jetblue Airways, Delta Air Lines, and United Airlines. Delta Air Lines has lowest fares on this route.
Jetblue Airways logo Jetblue Airways
Delta Air Lines logo Delta Air Lines
United Airlines logo United Airlines
Airlines are determined based on actual purchased flight tickets from San Francisco to Boston according to previous 12 months data from Trip.com.

Search for direct flights from San Francisco to Boston in the next 3 months. Based on Trip.com's latest 7-day flight data, one-way direct flights start at US$106, and round-trip direct flights start at US$198.

      • Cheapest nonstop
        SFO 13:00
        5h 35m
        Nonstop
        BOS 21:35
        San Francisco - Boston | Mon, Mar 9 | Delta Air Lines
        BOS 17:35
        7h
        Nonstop
        SFO 21:35
        Boston - San Francisco | Wed, Mar 11 | Delta Air Lines
        US$198 US$251
        21% off
        21% off
        US$251 US$198
      • SFO 07:10
        5h 39m
        Nonstop
        BOS 15:49
        San Francisco - Boston | Wed, Mar 11 | Delta Air Lines
        BOS 07:40
        6h 58m
        Nonstop
        SFO 11:38
        Boston - San Francisco | Mon, Mar 16 | Delta Air Lines
        US$198 US$251
        21% off
        21% off
        US$251 US$198
      • SFO 07:10
        5h 39m
        Nonstop
        BOS 15:49
        San Francisco - Boston | Mon, Mar 2 | Delta Air Lines
        BOS 17:35
        7h 2m
        Nonstop
        SFO 21:37
        Boston - San Francisco | Tue, Mar 10 | Delta Air Lines
        US$198 US$251
        21% off
        21% off
        US$251 US$198
      • SFO 07:10
        5h 39m
        Nonstop
        BOS 15:49
        San Francisco - Boston | Sun, Mar 8 | Delta Air Lines
        BOS 07:45
        7h 2m
        Nonstop
        SFO 11:47
        Boston - San Francisco | Tue, Mar 10 | Delta Air Lines
        US$203
        19% off
        US$251 US$203
      • SFO 20:40
        5h 31m
        Nonstop
        BOS 05:11
        San Francisco - Boston | Fri, Feb 20 | Jetblue Airways
        BOS 20:33
        6h 52m
        Nonstop
        SFO 00:25
        Boston - San Francisco | Fri, Feb 27 | Jetblue Airways
        US$205
        18% off
        US$251 US$205
      • SFO 07:10
        5h 39m
        Nonstop
        BOS 15:49
        San Francisco - Boston | Fri, Feb 20 | Delta Air Lines
        BOS 20:33
        6h 52m
        Nonstop
        SFO 00:25
        Boston - San Francisco | Fri, Feb 27 | Jetblue Airways
        US$206
        18% off
        US$251 US$206
      • SFO 07:10
        5h 41m
        Nonstop
        BOS 15:51
        San Francisco - Boston | Tue, Feb 17 | Delta Air Lines
        BOS 17:35
        7h
        Nonstop
        SFO 21:35
        Boston - San Francisco | Tue, Feb 24 | Delta Air Lines
        US$208
        17% off
        US$251 US$208
      • SFO 13:00
        5h 35m
        Nonstop
        BOS 21:35
        San Francisco - Boston | Tue, Mar 3 | Delta Air Lines
        BOS 20:40
        6h 51m
        Nonstop
        SFO 00:31
        Boston - San Francisco | Fri, Mar 6 | Jetblue Airways
        US$212
        16% off
        US$251 US$212
      • SFO 07:10
        5h 39m
        Nonstop
        BOS 15:49
        San Francisco - Boston | Tue, Mar 10 | Delta Air Lines
        BOS 07:40
        6h 58m
        Nonstop
        SFO 11:38
        Boston - San Francisco | Mon, Mar 16 | Delta Air Lines
        US$212
        16% off
        US$251 US$212
      • SFO 12:30
        5h 38m
        Nonstop
        BOS 21:08
        San Francisco - Boston | Tue, Mar 3 | Jetblue Airways
        BOS 20:40
        6h 51m
        Nonstop
        SFO 00:31
        Boston - San Francisco | Fri, Mar 6 | Jetblue Airways
        US$213
        15% off
        US$251 US$213
      • SFO 13:00
        17h 25m
        1 stop
        BOS Invalid Date
        San Francisco - Boston | Thu, Feb 19 | Normal Airline
        BOS 15:00
        6h
        Nonstop
        SFO 16:00
        Boston - San Francisco | Sat, Feb 21 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        SFO 13:00
        5h 35m
        Nonstop
        BOS 21:35
        San Francisco - Boston | Tue, Mar 3 | Delta Air Lines
        US$106 US$132
        20% off
        20% off
        US$132 US$106
      • SFO 13:00
        5h 39m
        Nonstop
        BOS 21:39
        San Francisco - Boston | Tue, Mar 10 | Delta Air Lines
        US$110 US$132
        17% off
        17% off
        US$132 US$110
      • SFO 15:25
        5h 33m
        Nonstop
        BOS 23:58
        San Francisco - Boston | Fri, Feb 20 | Jetblue Airways
        US$111 US$132
        16% off
        16% off
        US$132 US$111
      • SFO 15:25
        5h 33m
        Nonstop
        BOS 23:58
        San Francisco - Boston | Fri, Feb 27 | Jetblue Airways
        US$112
        15% off
        US$132 US$112
      • SFO 15:25
        5h 33m
        Nonstop
        BOS 23:58
        San Francisco - Boston | Tue, Mar 10 | Jetblue Airways
        US$112
        15% off
        US$132 US$112
      • SFO 22:38
        9h 35m
        1 stop
        BOS 11:13
        San Francisco - Boston | Tue, Mar 24 | Frontier Airlines
        US$102
        23% off
        US$132 US$102
      • SFO 22:38
        10h 27m
        1 stop
        BOS 12:05
        San Francisco - Boston | Tue, Apr 14 | Frontier Airlines
        US$103
        22% off
        US$132 US$103
      • SFO 11:34
        9h 25m
        1 stop
        BOS 23:59
        San Francisco - Boston | Wed, Mar 4 | Alaska Airlines
        US$109
        17% off
        US$132 US$109
      • SFO 16:21
        11h 33m
        1 stop
        BOS 06:54
        San Francisco - Boston | Tue, Mar 17 | Alaska Airlines
        US$109
        17% off
        US$132 US$109
      • SFO 22:45
        7h 29m
        1 stop
        BOS 09:14
        San Francisco - Boston | Sat, Feb 28 | Delta Air Lines
        US$111
        16% off
        US$132 US$111
      • SFO 13:00
        17h 25m
        1 stop
        BOS Invalid Date
        San Francisco - Boston | Thu, Feb 19 | Normal Airline
        Find more flights
        Find more flights

Displayed flight fares from San Francisco to Boston are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

San Francisco to Boston Flight Details

The distance between San Francisco and Boston is about 4,342.96 km. The average flying time from San Francisco to Boston is around 5 hours 45 minutes. Based on Trip.com's latest data, travel demand is highest in July. The off-season for travel is October.

Cheapest one-way flight priceUS$102
Cheapest return ticket priceUS$198
Cheapest monthOctober
Peak season for travelJuly
Flight distance4,342.96 km
Average flight time5 hours 45 minutes
Popular airlineJetblue Airways
Flight statistics for the San Francisco–Boston route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Insights on Flights from San Francisco to Boston

Which month has the cheapest one-way flights from San Francisco to Boston?

The average price of one-way flights from San Francisco to Boston purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from San Francisco to Boston is Feb, with an average price of US$187; while the month with the highest flight price is usually Oct, with an average price of up to US$276.

US$276
US$232
US$187
US$143
  • US$187
    Feb
  • US$260
    Mar
  • US$255
    Apr
  • US$217
    May
  • US$274
    Jun
  • US$246
    Jul
  • US$270
    Aug
  • US$212
    Sep
  • US$276
    Oct
  • US$237
    Nov
  • US$242
    Dec
  • US$209
    Jan

What is the cheapest day of the week to fly from San Francisco to Boston?

Average weekly flight prices from San Francisco to Boston by travel date (Based on Trip.com’s past 12 months of data)

Based on Trip.com’s past 12 months of flight data, the cheapest day to fly from San Francisco to Boston is Tue, with average prices lower than on other days. Avoid Sun, as prices are usually highest then.

US$276
US$236
US$196
US$156
  • US$247
    Mon
  • US$196
    Tue
  • US$216
    Wed
  • US$232
    Thu
  • US$248
    Fri
  • US$267
    Sat
  • US$276
    Sun

Frequently Asked Questions

  • What are the cheapest flights from San Francisco to Boston (SFO-BOS)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as US$102 on Cheapest nonstop routes (e.g. SFO to BOS on Tue, Mar 24), while Delta Air Lines offers Cheapest nonstop round-trips from US$198 departing on Mon, Mar 9 and returning on Wed, Mar 11.
  • At the moment, you can catch a nonstop flight from San Francisco to Boston with the following airlines, including: Jetblue Airways United Airlines Delta Air Lines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 5 hours 45 minutes to fly from San Francisco to Boston.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Francisco to Boston is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 70 flight per week flying from San Francisco to Boston. You can check the weekly schedule for popular airlines on this route below: Delta Air Lines: S/M/T/W/T/F/S -- DL400 (07:27)
  • To find best deals on flights from San Francisco to Boston, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Mar 24, with one-way flights priced at just US$102.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Delta Air Lines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Boston travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from San Francisco to Boston is October, when demand for travel is lower.
  • After crunching the numbers on our February flight calendar, it's currently cheapest to fly from San Francisco to Boston on February 24, 2026 with Hawaiian Airlines, with prices starting at US$110.
  • You can land at any one of the following hubs in Boston, with San Francisco International Airport to Logan International Airport (SFO-BOS) is by far the most common option on this route: Hartford Barnes Airport (BNH) Logan International Airport (BOS) Portsmouth International Airport at Pease (PSM).
  • The time difference between Boston and San Francisco is 3h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

Trip.com Airline Insights on Flights from San Francisco to Boston

Which airline offers the cheapest direct flights from San Francisco to Boston?

Data is based on the average price of all nonstop flights from San Francisco to Boston on Trip.com over the past 12 months.

Based on Trip.com’s data from the past 12 months, Hawaiian Airlines provides the lowest-priced direct flights from San Francisco to Boston, with fares starting at US$231.

US$195
US$231
US$267
US$303
US$339
Hawaiian Airlines
US$231
Hawaiian Airlines
Alaska Airlines
US$234
Alaska Airlines
Jetblue Airways
US$251
Jetblue Airways
Delta Air Lines
US$280
Delta Air Lines
American Airlines
US$284
American Airlines
United Airlines
US$339
United Airlines

Which airline operates the most flights from San Francisco to Boston?

Total flights from San Francisco to Boston across all airlines. (Based on Trip.com data from the past month)

Based on Trip.com’s data from the past month, United Airlines operates the most frequent flights from San Francisco to Boston, with 31 flights per week.

6
14
23
31
United Airlines
31
United Airlines
Virgin Australia
29
Virgin Australia
Air New Zealand
29
Air New Zealand
Jetblue Airways
28
Jetblue Airways
Hawaiian Airlines
27
Hawaiian Airlines
Delta Air Lines
14
Delta Air Lines

How many flights fly from San Francisco to Boston daily?

The data is based on the flight numbers for each day of the week from San Francisco to Boston within the Trip.com database over the past month.

Based on the past month's historical data from Trip.com, the number of flights from San Francisco to Boston is the highest on Friday and the lowest on Tuesday.

170
143
115
88
Highest
133
Mon
115
Tue
118
Wed
141
Thu
170
Fri
117
Sat
123
Sun

Explore More Popular Flights