$127+ Cheap flights from San Francisco (SFO) to Falmouth, MA, MA
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
Feb 28 — Mar 71
1 adult, Economy
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Find cheap flights from San Francisco to Falmouth with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from San Francisco to Falmouth are usually found in February or January, booked 69 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday
Cheap flight deals from San Francisco to Falmouth
Cheapest flights from San Francisco to FalmouthExplore the most affordable flight options available from San Francisco to Falmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.
Explore the most affordable flight options available from San Francisco to Falmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.
This Expedia deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/13:10 pm
SFO
- BOS
Nonstop5h 48m
Multiple Airlines
Tue 4/75:45 am
BOS
- SFO
1 stop16h 29m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$215
This Alaska Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:40 am
SFO
- BOS
1 stop7h 44m
Alaska Airlines
Tue 3/35:44 pm
BOS
- SFO
1 stop9h 15m
Alaska Airlines
Deal found 1/27![Alaska Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2410:58 pm
SFO
- BOS
2 stops14h 47m
Multiple Airlines
Tue 3/36:00 am
BOS
- SFO
1 stop18h 39m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$219
This Jetabroad deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2411:34 am
SFO
- BOS
1 stop9h 25m
Hawaiian Airlines
Thu 2/264:36 pm
BOS
- SFO
1 stop10h 08m
Hawaiian Airlines
Deal found 1/28![Hawaiian Airlines logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1710:55 pm
SFO
- BOS
1 stop23h 18m
Frontier
Fri 2/206:00 am
BOS
- SFO
1 stop18h 39m
Frontier
Deal found 1/27![Frontier logo]()
$222
This Expedia deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1010:40 pm
SFO
- BOS
1 stop8h 49m
Multiple Airlines
Tue 3/178:59 pm
BOS
- SFO
Nonstop6h 52m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1610:58 pm
SFO
- BOS
1 stop23h 15m
Frontier
Mon 2/236:00 am
BOS
- SFO
1 stop18h 39m
Frontier
Deal found 1/26![Frontier logo]()
$225
This Flysmarter deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/198:00 am
SFO
- BOS
Nonstop5h 40m
JetBlue
Wed 2/257:00 am
BOS
- SFO
Nonstop7h 00m
JetBlue
Deal found 1/27![JetBlue logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1710:55 pm
SFO
- BOS
1 stop23h 18m
Frontier
Wed 2/256:00 am
BOS
- SFO
1 stop18h 39m
Frontier
Deal found 1/27![Frontier logo]()
$228
This CheapOair deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2410:38 pm
SFO
- BOS
1 stop9h 35m
Multiple Airlines
Wed 4/19:15 pm
BOS
- SFO
Nonstop6h 44m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2510:58 pm
SFO
- BOS
2 stops22h 01m
Multiple Airlines
Wed 3/46:00 am
BOS
- SFO
1 stop18h 39m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2710:28 am
SFO
- BOS
2 stops11h 45m
Frontier
Tue 3/1012:36 pm
BOS
- SFO
1 stop33h 38m
Frontier
Deal found 1/27![Frontier logo]()
$231
Find flight deals from San Francisco to Falmouth
Keep the following information in mind while searching for San Francisco to Falmouth flight deals. Data was last updated January 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $215 (Expedia) |
One-way from | $127 (United Airlines) |
Popular in | December |
Cheapest in | February |
Average price | $337 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Falmouth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from San Francisco to Falmouth that are best for you.
Fly from
San Francisco
Fly to
Falmouth
Route
Depart
Return
Price
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 2/19
11:20 pm-7:58 am
Nonstop5h 38m
Boston Logan Intl
Mon 2/23
5:50 pm-9:50 pm
Nonstop7h 00m
$237
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 2/19
7:10 am-3:49 pm
Nonstop5h 39m
Boston Logan Intl
Wed 2/25
7:45 am-11:47 am
Nonstop7h 02m
$237
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Wed 2/25
7:10 am-3:49 pm
Nonstop5h 39m
Boston Logan Intl
Sat 2/28
5:35 pm-9:35 pm
Nonstop7h 00m
$247
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Thu 3/12
9:30 pm-6:08 am
Nonstop5h 38m
Boston Logan Intl
Sun 3/15
5:45 am-9:43 am
Nonstop6h 58m
$257
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sun 3/8
11:59 pm-10:49 am
1 stop7h 50m
Boston Logan Intl
Wed 3/11
5:50 pm-9:50 pm
Nonstop7h 00m
$257
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 3/31
10:00 pm-6:40 am
Nonstop5h 40m
Boston Logan Intl
Tue 4/7
4:35 pm-12:58 am
1 stop11h 23m
$265
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 2/17
7:10 am-3:49 pm
Nonstop5h 39m
Boston Logan Intl
Thu 2/19
5:35 pm-9:35 pm
Nonstop7h 00m
$265
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Sat 2/28
7:06 pm-5:52 am
1 stop7h 46m
Boston Logan Intl
Mon 3/9
5:50 pm-9:50 pm
Nonstop7h 00m
$267
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 2/17
7:10 am-3:49 pm
Nonstop5h 39m
Boston Logan Intl
Thu 3/5
7:45 am-11:47 am
Nonstop7h 02m
$275
San FranciscoBoston
SFO - BOS
SFOBOS
San Francisco
Tue 3/3
7:10 am-3:49 pm
Nonstop5h 39m
Boston Logan Intl
Fri 3/6
7:45 am-11:47 am
Nonstop7h 02m
$277
Showing 1-10 of 24 results
Best time to book a flight from San Francisco to Falmouth
Have a flexible travel schedule? Discover the best time to fly to Falmouth from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Falmouth
How far ahead should I book a flight from San Francisco to Falmouth?
Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Falmouth. Price data was last updated on January 23, 2026.
Booking 69 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Falmouth. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from San Francisco to Falmouth?
Currently, December is the cheapest month in which you can book a flight from San Francisco to Falmouth (average of $118). Flying from San Francisco to Falmouth in June is currently the most expensive (average of $208). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SFO to FM5?
Find hourly flight availability from San Francisco to Falmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 29, 2026.
When flying from San Francisco to Falmouth, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 12% versus a flight in the morning.
What is the cheapest day to fly from San Francisco to Falmouth?
Use this chart to determine the cheapest time to fly round-trip from San Francisco to Falmouth. Price data was last updated on January 24, 2026.
Travelers seeking maximum savings on their San Francisco to Falmouth flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from San Francisco to Falmouth
Explore weekly flight availability from San Francisco to Falmouth. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 29, 2026.
The most flights from SFO to FM5 are scheduled on a Monday (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).
Reviews of airlines servicing Falmouth
Get insights into the airlines that provide service to Falmouth. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Falmouth. Reviews last updated January 29, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Hawaiian Airlines from San Francisco to Falmouth by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Falmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for San Francisco to Falmouth
See prices for flight routes from nearby airports that may be better suited for you.
Top 9 airlines flying from San Francisco to Falmouth
Discover the top 9 airlines that operate flights from San Francisco to Falmouth. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$75 | Average$193 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$129 | Average$338 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$141 | Average$394 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$159 | Average$348 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$162 | Average$465 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$189 | Average$516 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$205 | Average$446 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$229 | Average$530 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$237 | Average$402 | FlexibilityNo cancel fee | On-time75% |