$254+ Cheap flights from San Francisco to Portsmouth, NH (SFO - PSM)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — PSM
Oct 9 — Oct 161
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Portsmouth 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.Cheap flight deals from San Francisco to Portsmouth
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Francisco to PortsmouthExplore the most affordable flight options available from San Francisco to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
Explore the most affordable flight options available from San Francisco to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
This KAYAK deal was found by Cheapflights users on 9/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:46 pm -
3 stops52h 11m
Sun 11/156:47 pm -
3 stops25h 03m
Deal found 9/4![Breeze Airways logo]()
$1,073
This KAYAK deal was found by Cheapflights users on 9/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2912:46 pm -
3 stops52h 11m
Thu 11/56:47 pm -
3 stops25h 03m
Deal found 9/7![Breeze Airways logo]()
$1,083
This KAYAK deal was found by Cheapflights users on 9/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2212:46 pm -
3 stops52h 11m
Sun 10/256:47 pm -
3 stops25h 03m
Deal found 9/8![Breeze Airways logo]()
$1,173
This KAYAK deal was found by Cheapflights users on 9/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:30 pm -
3 stops23h 27m
Sun 10/256:47 pm -
3 stops25h 03m
Deal found 9/8![Breeze Airways logo]()
$1,218
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2011:54 am -
2 stops51h 13m
Sat 11/288:37 pm -
3 stops41h 32m
Deal found 9/5![Breeze Airways logo]()
$1,403
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2212:46 pm -
3 stops49h 05m
Sat 11/288:37 pm -
3 stops41h 32m
Deal found 9/5![Breeze Airways logo]()
$1,413
This KAYAK deal was found by Cheapflights users on 9/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/812:46 pm -
3 stops49h 23m
Sun 10/116:47 pm -
3 stops25h 03m
Deal found 9/8![Breeze Airways logo]()
$1,603
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2011:54 am -
2 stops51h 13m
Sun 11/296:47 pm -
3 stops25h 03m
Deal found 9/5![Breeze Airways logo]()
$1,993
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2212:46 pm -
3 stops49h 05m
Sun 11/296:47 pm -
3 stops25h 03m
Deal found 9/5![Breeze Airways logo]()
$2,003
Best flights from San Francisco to PortsmouthDiscover carefully curated flight deals from San Francisco to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from San Francisco to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
This KAYAK deal was found by Cheapflights users on 9/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:46 pm -
3 stops52h 11m
Sun 11/156:47 pm -
3 stops25h 03m
Deal found 9/4![Breeze Airways logo]()
$1,073
This KAYAK deal was found by Cheapflights users on 9/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2912:46 pm -
3 stops52h 11m
Thu 11/56:47 pm -
3 stops25h 03m
Deal found 9/7![Breeze Airways logo]()
$1,083
This KAYAK deal was found by Cheapflights users on 9/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2212:46 pm -
3 stops52h 11m
Sun 10/256:47 pm -
3 stops25h 03m
Deal found 9/8![Breeze Airways logo]()
$1,173
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2212:46 pm -
3 stops49h 05m
Sat 11/288:37 pm -
3 stops41h 32m
Deal found 9/5![Breeze Airways logo]()
$1,413
This KAYAK deal was found by Cheapflights users on 9/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/812:46 pm -
3 stops49h 23m
Sun 10/116:47 pm -
3 stops25h 03m
Deal found 9/8![Breeze Airways logo]()
$1,603
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2011:54 am -
2 stops51h 13m
Sun 11/296:47 pm -
3 stops25h 03m
Deal found 9/5![Breeze Airways logo]()
$1,993
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2212:46 pm -
3 stops49h 05m
Sun 11/296:47 pm -
3 stops25h 03m
Deal found 9/5![Breeze Airways logo]()
$2,003
Last-minute flights from San Francisco to PortsmouthDiscover last-minute flight deals from San Francisco to Portsmouth. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Portsmouth. Data last updated September 9, 2026 and is based on user searches.
This KAYAK deal was found by Cheapflights users on 9/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/812:46 pm -
3 stops49h 23m
Sun 10/116:47 pm -
3 stops25h 03m
Deal found 9/8![Breeze Airways logo]()
$1,603
This KAYAK deal was found by Cheapflights users on 9/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2212:46 pm -
3 stops52h 11m
Sun 10/256:47 pm -
3 stops25h 03m
Deal found 9/8![Breeze Airways logo]()
$1,173
This KAYAK deal was found by Cheapflights users on 9/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:30 pm -
3 stops23h 27m
Sun 10/256:47 pm -
3 stops25h 03m
Deal found 9/8![Breeze Airways logo]()
$1,218
This KAYAK deal was found by Cheapflights users on 9/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2912:46 pm -
3 stops52h 11m
Thu 11/56:47 pm -
3 stops25h 03m
Deal found 9/7![Breeze Airways logo]()
$1,083
One-way flights from San Francisco to PortsmouthSearch for one-way flight options from San Francisco to Portsmouth. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
Search for one-way flight options from San Francisco to Portsmouth. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/5. 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.
Thu 10/810:19 pm -
2 stops39h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$254
This KAYAK deal was found by Cheapflights users on 9/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:46 pm -
3 stops49h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Breeze Airways logo]()
$546
This KAYAK deal was found by Cheapflights users on 9/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2011:54 am -
2 stops51h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Breeze Airways logo]()
$605
This KAYAK deal was found by Cheapflights users on 9/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:46 pm -
3 stops52h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Breeze Airways logo]()
$686
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/15:30 pm -
3 stops23h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Breeze Airways logo]()
$1,265
This KAYAK deal was found by Cheapflights users on 9/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2612:46 pm -
3 stops52h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Breeze Airways logo]()
$1,276
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/3112:46 pm -
3 stops41h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Breeze Airways logo]()
$1,446
Find flight deals from San Francisco to Portsmouth
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Portsmouth (PSM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,073 (KAYAK) |
One-way from | $254 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $418 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Portsmouth 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 7,457,451 searches. Data last updated September 9, 2026.
Use the filters below to find and compare flights from San Francisco to Portsmouth that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoPortsmouth
SFO San Francisco - PSM Portsmouth Pease Intl
SFOPSM
San Francisco
Thu 10/8
10:19 pm-5:09 pm
2 stops39h 50m
Portsmouth Pease Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$254
San FranciscoPortsmouth
SFO San Francisco - PSM Portsmouth Pease Intl
SFOPSM
San Francisco
Thu 10/1
12:46 pm-5:09 pm
3 stops49h 23m
Portsmouth Pease Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$546
San FranciscoPortsmouth
SFO San Francisco - PSM Portsmouth Pease Intl
SFOPSM
San Francisco
Thu 11/19
12:46 pm-7:57 pm
3 stops52h 11m
Portsmouth Pease Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$686
Quickest round-trip
San FranciscoPortsmouth
SFO San Francisco - PSM Portsmouth Pease Intl
SFOPSM
San Francisco
Fri 11/20
5:30 pm-7:57 pm
3 stops23h 27m
Portsmouth Pease Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$745
San FranciscoPortsmouth
SFO San Francisco - PSM Portsmouth Pease Intl
SFOPSM
San Francisco
Thu 11/12
12:46 pm-7:57 pm
3 stops52h 11m
Portsmouth Pease Intl
Sun 11/15
6:47 pm-4:50 pm
3 stops25h 03m
$1,073
San FranciscoPortsmouth
SFO San Francisco - PSM Portsmouth Pease Intl
SFOPSM
San Francisco
Thu 10/29
12:46 pm-7:57 pm
3 stops52h 11m
Portsmouth Pease Intl
Thu 11/5
6:47 pm-4:50 pm
3 stops25h 03m
$1,083
San FranciscoPortsmouth
SFO San Francisco - PSM Portsmouth Pease Intl
SFOPSM
San Francisco
Thu 10/22
12:46 pm-7:57 pm
3 stops52h 11m
Portsmouth Pease Intl
Sun 10/25
6:47 pm-4:50 pm
3 stops25h 03m
$1,173
San FranciscoPortsmouth
SFO San Francisco - PSM Portsmouth Pease Intl
SFOPSM
San Francisco
Fri 1/1
5:30 pm-7:57 pm
3 stops23h 27m
Portsmouth Pease Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$1,265
San FranciscoPortsmouth
SFO San Francisco - PSM Portsmouth Pease Intl
SFOPSM
San Francisco
Thu 11/26
12:46 pm-7:57 pm
3 stops52h 11m
Portsmouth Pease Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$1,276
San FranciscoPortsmouth
SFO San Francisco - PSM Portsmouth Pease Intl
SFOPSM
San Francisco
Sun 11/22
12:46 pm-4:51 pm
3 stops49h 05m
Portsmouth Pease Intl
Sat 11/28
8:37 pm-11:09 am
3 stops41h 32m
$1,413
Showing 1-10 of 14 resultsSorted by cheapest first
Compare providers for flights from San Francisco to Portsmouth
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Portsmouth in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-Portsmouth, New Hampshire flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Portsmouth, New Hampshire flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Portsmouth, New Hampshire flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Portsmouth, New Hampshire flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Portsmouth, New Hampshire flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Francisco to Portsmouth
Have a flexible travel schedule? Discover the best time to fly to Portsmouth from San Francisco with our price prediction graph.
SFO-PSM
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.
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Portsmouth. 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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