Downtown San Francisco skyline with the Transamerica Pyramid. Flights from Boston to San Francisco

Route guide

Cheap Flights from Boston to San Francisco

Compare partner fares from Boston Logan to San Francisco International, with the Logan terminal for each airline and the buses and trains that leave SFO.

BOS to SFO · 2,697 mi · 6h 17m est.

BOS to SFO
2,697 miles
6h 17m nonstop (estimated)
6 airlines in our fare results

Photo: Frank Schulenburg, CC BY-SA 4.0, via Wikimedia Commons

Boston to San Francisco flight insights

Average flight time

~6h 17m (estimated)

BOS → SFO

Cheapest cached price

$177

Checking live fares…

Prices shown may not be current. Last checked: Oct 19, 2026.

Planning a trip from Boston to San Francisco? The average flight time on this route is ~6h 17m (estimated). The lowest fare we recorded on this route recently was $177 (last checked Oct 19, 2026); today's live fare for your dates can differ.

Boston to San Francisco covers a straight-line distance of about 2,697 miles. Based on that distance, a nonstop flight would take approximately ~6h 17m (estimated). Actual flight time varies by airline, aircraft and routing.

Boston to San Francisco at a glance

BOS to SFO is about 2,697 miles in a straight line. The curved line is an illustration; the route your airline flies may differ.

Route Quick Facts

Quick facts for flights from Boston to San Francisco on Eazair
Origin	Boston (BOS)
Destination	San Francisco (SFO)
Average Flight Time	~6h 17m (estimated)
Current Lowest Fare	$177
Fares Last Checked	Oct 19, 2026
Distance	2,697 miles (BOS to SFO)
Time in San Francisco	3 hours behind Boston
Airlines in our fare results	6

Local time in San Francisco is 3 hours behind Boston. Boston is on Eastern Time, San Francisco on Pacific Time.

Flight deals from Boston to San Francisco

The search here covers Boston Logan International (BOS) to San Francisco International (SFO). JetBlue, Delta, American, United, Frontier and Sun Country have appeared in EazAir's fare checks for this route. At Logan, JetBlue lists Terminal C for domestic flights, American lists Terminal B with gates B4 to B22, and Delta says its domestic flights use both Terminal A and Terminal E. TF Green Airport is a separate airport, and at the arrival end so are Oakland (OAK) and San Jose (SJC).

From South Station, the Silver Line SL1 bus stops at every Logan terminal, and the MBTA says transfers from the Red Line to the SL1 are free when you head to the airport. JetBlue asks travelers to arrive 2 hours before domestic flights and lists ticket counter hours of 2:30 a.m. to 11:30 p.m. Delta flyers should check the Fly Delta app or My Trips for A or E, and a Delta shuttle bus links the two from 4:30 a.m. to 10:30 p.m.

SamTrans says routes 292, 397 and the late-night ECR OWL stop right at the SFO terminals and serve San Mateo County and San Francisco. At Terminal 2 the stop is on the Arrivals/Baggage Claim Level at the center island next to Courtyard 2, and at Terminal 3 it is curbside next to Courtyard 4. For rail, BART lists its SFO station on Level 3 of the International Terminal, reached from the domestic terminals on foot or by the AirTrain Red Line.

EazAir's first 20 fare checks for BOS to SFO, run from 11 Sep to 14 Oct 2026, each looked for the lowest one-way economy fare for one adult, departing 30 days later. They returned 14 different results. The highest was at least double the lowest, and the lowest came on 14 Oct. Sun Country's base fare and Frontier without a bundle include a personal item but no carry-on. Search your own dates, and check the final price, bags and fare rules on the partner site before you pay.

Airports for Boston to San Francisco flights

Departure · Boston

Logan International (BOS)

Eastern Time

Arrival · San Francisco

San Francisco International (SFO)

Pacific Time

Other airports near San Francisco Bay Area: Oakland International (OAK), Norman Y. Mineta San Jose International (SJC)

About San Francisco

Areas to know in San Francisco

Mission District
North Beach
Hayes Valley

Weather in San Francisco

A Mediterranean climate, though famously cool and foggy in summer due to marine influence.

Boston to San Francisco: airport and fare guide

Checked on 17 Oct 2026 against the airport, airline and transit pages listed under Sources. Airports and airlines change these details, so confirm them with your airline before you fly.

Oakland (OAK) and San Jose (SJC) are separate airports in the same region. Check that your ticket says SFO.

TF Green Airport is a separate airport. The MBTA says the Providence/Stoughton Commuter Rail line from South Station connects to it.

Leaving from Boston Logan International (BOS)

Airline	Logan terminal
American	Terminal B, gates B4 to B22.
Delta	Terminal A and Terminal E for domestic flights. Check the Fly Delta app or My Trips for yours.
JetBlue	Terminal C for domestic flights and international departures. International arrivals use Terminal E.
Other airlines	Check your boarding pass or airline app.

The SL1 bus stops at every Logan terminal, and the MBTA says transfers from the Red Line to the SL1 are free when you head to the airport.
On the Blue Line, get off at Airport station and take the free Massport Shuttle, which stops at every terminal.
MBTA ferries serve the Logan Airport Ferry Terminal from Long Wharf, Lovejoy Wharf, Hingham and Hull, with more service in summer.
JetBlue asks travelers at Logan to arrive 2 hours before domestic flights and 3 hours before international flights.
Delta says its domestic flights leave from both Terminal A and Terminal E, so check the Fly Delta app or My Trips before you go through security.
JetBlue lists Logan ticket counter hours of 2:30 a.m. to 11:30 p.m. American lists its Terminal B ticket counters as open daily from 3 a.m. to 9 p.m.
When the E3 checkpoint in Terminal E opened, TSA said it had seven screening lanes and that the E2 checkpoint would serve as overflow when volumes are heavy.

Arriving at San Francisco International (SFO)

Airline terminal locations are not listed here. Check your boarding pass or airline app for your terminal.

BART describes SFO as having domestic Terminals 1, 2 and 3 plus the International Terminal.
The BART station is in the International Terminal on Level 3. BART says it is a short walk from Terminals 1 and 3.
AirTrain links all terminals with the BART station. BART says the domestic terminals are one to three minutes away on AirTrain.

Getting from SFO	Where to board	Where it goes
BART	SFO station, International Terminal, Level 3. From Terminals 1, 2 and 3, walk or take the AirTrain Red Line, BART says.	BART lists two lines here, Antioch to SFIA/Millbrae and Richmond to Millbrae/SFIA. About 30 minutes to downtown San Francisco, according to BART.
AirTrain	All terminals, BART says.	Terminals 1, 2 and 3 and the BART station in the International Terminal.
Caltrain via Millbrae	Take BART from the SFO station to Millbrae, a 4-minute ride, according to BART.	Caltrain, through the cross-platform connection BART lists at Millbrae.
SamTrans buses	Terminal 2 and Terminal 3 on the Arrivals/Baggage Claim Level, and the International Terminal on Level 1 at Courtyard A or curbside next to Courtyard G, SamTrans says.	Routes 292, 397 and late-night ECR OWL stop at the terminals and serve San Mateo County and San Francisco, according to SamTrans.

What the lowest fares include

Fare	Carry-on	Checked bag	Seat	Changes
Delta Main Basic	Delta says every passenger can bring one carry-on and one personal item free.	Delta charges for checked bags on domestic flights unless you qualify for a waiver, such as Medallion status or an eligible Delta SkyMiles American Express card.	Assigned after check-in. You may be able to buy a seat ahead of time for a fee.	Refunds are not allowed after the 24-hour risk-free cancellation window. Delta says a change or cancellation may be possible for a fee, with any value left as an eCredit.
American Basic Economy	Included, plus a personal item.	Not included, except for some AAdvantage status members and eligible cardmembers.	A free seat is assigned at check-in, or you can pay to choose one.	Generally not allowed. American describes a 24-hour window and some credit options on its Basic Economy page.
United Basic Economy	Not included on domestic flights. One personal item only, unless you are a MileagePlus Premier member, travel with one, or hold a qualifying MileagePlus card.	Not included; check United's bag fee calculator.	Assigned by United before boarding.	Changes may not be allowed. Refund if cancelled within 24 hours of booking, under United's 24-hour policy; after that, partial travel credit.
JetBlue Main Base (bookings made after 29 Jul 2026)	Included, plus a personal item.	Not included.	Costs extra.	Change fee plus any fare difference. Cancelling gives travel credit minus a fee.
Frontier, without a bundle	Not included. One personal item only.	Not included. Prices vary by travel date and when you buy.	Costs extra, or a seat is assigned after check-in.	Not covered here. Check Frontier's rules before you book.
Sun Country base fare	Not included. The base fare includes a personal item.	Not included.	Costs extra to choose, or a seat is assigned at check-in.	A change fee and any fare difference may apply. Sun Country says to cancel the original reservation before departure to change the ticket.

Based on the airlines' own pages, checked on 17 Oct 2026. Fees are left out because they change often. Check the final price, bags and fare rules on the partner site before you pay.

How EazAir measured fares on this route

EazAir's first 20 fare checks from Boston to San Francisco ran from 11 Sep to 14 Oct 2026. For the return direction, San Francisco to Boston, EazAir's first 4 checks ran from 28 Sep to 9 Oct 2026. Each check asked partner travel sites for the lowest one-way economy fare for one adult, departing 30 days after the check. Results can include connecting flights. The highest result was at least double the lowest. The 20 checks returned 14 different results. The lowest result came on 14 Oct. That is a small sample, so it shows that prices move, not when they are lowest. Search your own dates for current prices.

Sources

MBTA: Logan Airport (no date shown, accessed 17 Oct 2026)
JetBlue: Boston airport information (no date shown, accessed 17 Oct 2026)
Delta: Boston airport update (no date shown, accessed 17 Oct 2026)
American: Boston airport information (no date shown, accessed 17 Oct 2026)
Southwest: Airport information, Boston Logan (no date shown, accessed 17 Oct 2026)
TSA: International checkpoint opens in Logan Terminal E (no date shown, accessed 17 Oct 2026)
BART: San Francisco International Airport (SFO) station (no date shown, accessed 17 Oct 2026)
BART: Getting to SFO (no date shown, accessed 17 Oct 2026)
BART: Millbrae station (no date shown, accessed 17 Oct 2026)
SamTrans: Airport service (no date shown, accessed 17 Oct 2026)
Delta: Delta Main Basic (no date shown, accessed 17 Oct 2026)
Delta: Fares and discounts (no date shown, accessed 17 Oct 2026)
Delta: Carry-on baggage (no date shown, accessed 17 Oct 2026)
Delta: Bags (no date shown, accessed 17 Oct 2026)
American Airlines: Basic Economy (no date shown, accessed 17 Oct 2026)
United: Basic Economy FAQ (no date shown, accessed 17 Oct 2026)
JetBlue: Fare options (no date shown, accessed 17 Oct 2026)
Frontier: What is included in my fare (last modified 25 Mar 2026, accessed 17 Oct 2026)
Frontier: Bag options (no date shown, accessed 17 Oct 2026)
Frontier: Bundles (no date shown, accessed 17 Oct 2026)
Sun Country Stories: Your first Sun Country flight? Here's what to expect from booking to boarding (Jul 10, 2025, accessed 17 Oct 2026)
Sun Country: Contract of Carriage (Updated October 15, 2025, accessed 17 Oct 2026)
EazAir fare checks for BOS to SFO, 11 Sep 2026 to 14 Oct 2026; SFO to BOS, 28 Sep 2026 to 9 Oct 2026

Frequently asked questions

Which Logan terminal do I use for this flight?

It depends on the airline. JetBlue lists Terminal C for domestic flights, American lists Terminal B, and Delta's domestic flights use Terminal A and Terminal E. For others, check your boarding pass or airline app.

How do I get to Logan Airport from South Station?

Take the Silver Line SL1, which stops at every Logan terminal. The MBTA says transfers from the Red Line to the SL1 are free when you are heading to the airport.

Is there a bus from SFO toward San Mateo County?

Yes. SamTrans routes 292, 397 and the late-night ECR OWL stop directly at the SFO terminals, according to SamTrans, and serve San Mateo County and San Francisco.

Which San Francisco airport does this page search?

San Francisco International (SFO). Oakland (OAK) and San Jose (SJC) are separate airports in the region, so confirm that your ticket says SFO.

Do the lowest fares from Boston to San Francisco include a carry-on?

JetBlue Main Base, Delta Main Basic and American Basic Economy include one. United Basic Economy on domestic flights, Frontier without a bundle and Sun Country's base fare include only a personal item.

How far is Boston from San Francisco?

BOS and SFO are about 2697 miles apart in a straight line. Flight times vary by airline, direction and routing, so check the scheduled time shown with each result.

Airline bag fees

Baggage allowances differ significantly between fare classes (Basic/Light vs. Standard/Flex) and can change over time. Always verify the exact allowance for your specific fare with the airline before you fly.

Checked bag fees from each airline's own website
Airline	Carry-on, basic economy	1st checked bag	2nd checked bag	Source
American Airlines	Included	$45	$55	aa.com, Sep 24, 2026
United Airlines	Not included	$40	$50	united.com, Sep 24, 2026
Delta Air Lines	Included	$45	$55	delta.com, Sep 24, 2026
Southwest Airlines	Included	$45	$55	southwest.com, Oct 27, 2026
JetBlue	Included	$45	$59	jetblue.com, Sep 24, 2026
Alaska Airlines	Included	$45	$55	alaskaair.com, Sep 24, 2026
Frontier Airlines	Not included	Varies	Varies	flyfrontier.com, Sep 24, 2026
Sun Country Airlines	Not included	Varies	Varies	suncountry.com, Sep 24, 2026

Domestic US fees per bag, each way, when paid online in advance. "Varies" means the airline prices bags by route and date.

Travel tips

Arrive early for domestic flights

TSA generally recommends arriving at least 2 hours before a domestic departure, more at larger hub airports during peak travel periods.

Pack a mixed carry-on

Keep a change of clothes, chargers, and any essentials in your carry-on rather than only your checked bag, in case of a delay or a bag that doesn't arrive with you.

Ease jet lag on longer routes

On longer cross-country flights, adjusting your sleep schedule a day or two before departure and staying hydrated in flight can reduce jet lag on arrival.

Screenshot your confirmation

Save a screenshot or PDF of your booking confirmation and boarding pass before you travel, in case you lose signal or battery at the airport.

Check in online when it opens

Most airlines open online check-in 24 hours before departure. Checking in early can help with seat selection and, on some airlines, boarding group assignment.