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Find cheap flights from San Francisco to Portsmouth from $168

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Portsmouth departing on 7/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Thu 6/27
Thu 7/4

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Low season

January

High season

July

Cheapest flight

$168
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 21% increase in price.
Flight from San Francisco to Boston

When to book flights from San Francisco to Portsmouth

Are your dates flexible? Find out the best times to travel from San Francisco to Portsmouth based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from San Francisco to Portsmouth

  • Which airports will I be using when flying from San Francisco to Portsmouth?

    When flying out of San Francisco you’ll be using San Francisco. Portsmouth does not have its own airport so you’ll be flying into nearby Boston Logan Intl airport, which is 50.3 mi away.

  • How long does a flight from San Francisco to Portsmouth take?

    Direct flights cover the 2,696 miles separating San Francisco and Portsmouth in about 5h 31m.

  • How many flights are there between San Francisco and Portsmouth?

    69 direct flights run between San Francisco and Portsmouth on a daily basis. On average, there are about 485 departures each week.

  • What’s the cheapest day of the week to fly between San Francisco and Portsmouth?

    Consider leaving on a Tuesday and avoid Wednesdays if you are looking for the best rates. For your return to San Francisco, you’ll find the best rates on Tuesdays and the most expensive ones on Thursdays.

  • How does KAYAK find such low prices on flights from San Francisco to Portsmouth?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Portsmouth.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Portsmouth?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portsmouth from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Portsmouth?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portsmouth with an airline and back to San Francisco with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Portsmouth?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portsmouth from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from San Francisco to Portsmouth?

    In the last 72 hours, the cheapest one-way ticket between San Francisco and Portsmouth found on KAYAK was with Sun Country Air for $168. JetBlue offered a round-trip connection from $199 and American Airlines from $215.

See more FAQs

Top tips for finding cheap flights from San Francisco to Portsmouth

  • There is no airport in Portsmouth. Instead, you’ll be flying into Boston Logan Airport when flying between San Francisco and Portsmouth.
  • The cheapest flight from San Francisco to Portsmouth was found 79 days before departure, on average.
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly is February.
See more tips

Top 5 airlines serving San Francisco to Portsmouth

 
Need help choosing which airline to fly with from San Francisco to Portsmouth? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9192 reviews
7.9Comfort
8.2Boarding
8.6Crew
7.3Entertainment
7.3Food
Airline reviews

The flight was mostly smooth and quiet. No seatback screens.

10.0 ExcellentAnonymous, May 2024SFO - EWR
Read more about Alaska Airlines reviews

The flight was mostly smooth and quiet. No seatback screens.

I enjoyed the leg room at my seat, but I was in an exit row.

Boarded the plain and had to wait 1 hour for crew Captain to arrive from another flight

They canceled the flight 30 minutes prior to departure without any heads up.

All parts were excellent, especially staff at bag tag printing and inflight crew. Just the normal differences from past air travel could be improved but we’ve learned to accept those—cramped seats, minimal food/beverage, etc.

Attentive crew. Best of all was the empty seat between me and my rowmate.

We had a very scary attempted landing in Palm Springs and were redirected to Ontario. It was a stressful flight.

Every thing means , crew, service, timing, boarding is very good.

I like that we took off on time and arrived a bit early. I like that I could gate check my bag and board early. I don't like how crowded the flight was. I had ok leg room, but could feel every move of the person next to me. And the aisles are very narrow. The gate and flight crews were terrific.

The flight was diverted and departed from San Jose instead of San Francisco. This could’ve been executed more smoothly because after arriving in San Jose it seemed like nothing was being processed correctly as needed for the gate agents to do their jobs well and the flight to leave on time

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

You need to be a hacker to get the (Free) WiFi

Flight was delayed by almost 5 hours. Suitcase was not loaded despite the flight being near empty (my colleagues’ suitcases did reach JFK, unlike mine). Had to argue on phone to get JetBlue to deliver the case to my hotel. Never again

The flight was excellent. The crew was welcoming and attentive.

Great! I love Jet Blue. My favorite airline! Very efficient, clean and timely.

Run out of snack choices. Why are the seats not padded for your butt? Are we sitting on blocks of wood or metal for $250-300 a pop? This ain’t spirit. Let’s get it together people

We were told that our flight would be delayed for 90+ minutes because of weather, so we went to get something to eat only to have them randomly start boarding 15 minutes after the announcement, with no warning.

Entertainment... No earphones passed out. Many including me couldn't use the TV. Legroom was good. Crew was indifferent and a bit surly. Free wifi was a nice convenience. Check in desk location was unknown. Gate number on the boarding passes was wrong.

Going through JFK’s security is a mess. The TSA security said no shoes on the bins. So, we place our shoes in the belt and they came out all over the belt. Boarding was delayed and Flight as well.

Safe and on time were the positives. The plane wasn't cleaned before boarding, there was garbage and food on the floor and in the seat pocket. The TV screen was small and the picture fuzzy, audio quality was poor. Seatbelt was fraying and seat did not recline properly. No charging ports near the seats,

Confusing. Delay updates were out of whack At one point it said my flight was 25 hours. Three gate changes and two delays only to change back to original departure time. Gate announcer and on board flight attendant (Alejandro) making the announcements was impossible to understand due to accent and speed of speech. After beverage service the rear flight attendants sat back there on their phones. No refills no checking in, one sweep through for trash collection. Very impersonal. Bring back Coke products

Delayed departure. Delayed after landing pulling into gate. Delay due to sky bridge malfunction

On time take off…US cabins look tired and need of refresh!

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Awful. I got stuck next to a person carrying a dog and behind someone with a dog. People need to board these dogs downstairs. The cabin is crowded enough with your pets

Packed in like sardines, very uncomfortable. Sitting the aisle my shoulder was rammed into numerous times by rushing flight attendants. Also flight was very cold.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

Very uncomfortable seats and seat backs, and I am only 5’9”. Delayed due to crew issues, spent a long time with no ventilation. Teeny overhead bins. Wifi worked well. Arrived safely.

I was delighted that we were able to get on the 4:40 pm flight rather than our original booking at 6:55 pm!! Other than that, the flight was comfortable and landed early😊

Our flight was delayed many times throughout the day. The final delay was about 8 hours. I spent time in line to speak to someone at their understaffed desk, and also spent time waiting online and then chatting with a service rep. None of the United employees were any help at all. I desperately wanted to go get rest and possibly re-book my trip but I was denied any compensation or voucher for a hotel. I was repeatedly told it was not United's fault and therefore they had no compensation to offer. Overall, a cold and callous experience.

Paid WiFi was only available for a few minutes. Avoid at all costs.

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

Apart from the delay due to unforeseen circumstances. The leg from sjc to dfw was fine. It was the leg from dfw to orf that we encountered issues mainly due to the flight attendant crew not being friendly. We had two small children and we needed some assistance to warm up milk so the baby would sleep. The crew just didn’t get it and made things very difficult. One made a remark that the baby’s dirty diaper smell was a “gift” to the plane in a rude way. Normally I’d brush that off as a funny comment if the rest of the trip the attendants were helpful or understanding of the difficulty we faced. But that wasn’t the case. We were met with rudeness on the second leg. Whereas on the first leg the crew were so nice and helpful.

Book cheap flights from San Francisco to Portsmouth

Recent round-trip flight deals

8/13Tue
nonstopJetBlue
5h 37mSFO-BOS
8/20Tue
nonstopJetBlue
6h 30mBOS-SFO
$199
8/14Wed
1 stopJetBlue
9h 44mSFO-BOS
8/20Tue
nonstopJetBlue
6h 30mBOS-SFO
$208
8/14Wed
1 stopAmerican Airlines
8h 20mSFO-BOS
8/21Wed
1 stopAmerican Airlines
8h 59mBOS-SFO
$215
8/27Tue
1 stopUnited Airlines
9h 39mSFO-BOS
9/4Wed
nonstopUnited Airlines
6h 32mBOS-SFO
$227
8/17Sat
nonstopUnited Airlines
5h 43mSFO-BOS
9/1Sun
1 stopUnited Airlines
8h 09mBOS-SFO
$232
8/13Tue
1 stopAmerican Airlines
8h 20mSFO-BOS
8/20Tue
1 stopAmerican Airlines
8h 22mBOS-SFO
$235
8/11Sun
nonstopDelta
6h 00mSFO-BOS
8/21Wed
nonstopDelta
7h 00mBOS-SFO
$243
9/11Wed
nonstopDelta
5h 38mSFO-BOS
9/25Wed
nonstopDelta
6h 58mBOS-SFO
$245
8/6Tue
1 stopAlaska Airlines
11h 00mSFO-BOS
8/14Wed
1 stopAlaska Airlines
11h 21mBOS-SFO
$335
11/19Tue
nonstopAlaska Airlines
5h 40mSFO-BOS
11/27Wed
nonstopAlaska Airlines
6h 55mBOS-SFO
$342

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Recent one-way flight deals

7/15Mon
1 stopSun Country Air
7h 27mSFO-BOS
$168
8/3Sat
nonstopUnited Airlines
5h 43mSFO-BOS
$170
7/10Wed
nonstopJetBlue
5h 42mSFO-BOS
$172
7/8Mon
1 stopAmerican Airlines
8h 17mSFO-BOS
$177
6/10Mon
nonstopDelta
5h 46mSFO-BOS
$180
8/16Fri
1 stopJetBlue
10h 32mSFO-BOS
$181
8/10Sat
nonstopAlaska Airlines
5h 36mSFO-BOS
$194
6/3Mon
1 stopAmerican Airlines
7h 53mSFO-BOS
$197
6/4Tue
1 stopAlaska Airlines
8h 57mSFO-BOS
$218
7/3Wed
nonstopDelta
5h 54mSFO-BOS
$219

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Last minute flights from San Francisco to Portsmouth

Last minute flight, train and bus deals

6/1Sat
multi-stopUnited Airlines
9h 49mSFO-BOS
8/16Fri
nonstopUnited Airlines
6h 27mBOS-SFO
$369
5/31Fri
multi-stopUnited Airlines
7h 50mSFO-BOS
8/16Fri
nonstopUnited Airlines
6h 27mBOS-SFO
$374
5/31Fri
nonstopDelta
5h 52mSFO-BOS
8/16Fri
nonstopDelta
6h 42mBOS-SFO
$385
6/2Sun
nonstopJetBlue
5h 49mSFO-BOS
9/29Sun
nonstopJetBlue
6h 35mBOS-SFO
$392
6/1Sat
nonstopJetBlue
5h 58mSFO-BOS
6/11Tue
multi-stopJetBlue
9h 50mBOS-SFO
$404
6/2Sun
nonstopDelta
5h 52mSFO-BOS
6/11Tue
multi-stopDelta
20h 42mBOS-SFO
$420
5/30Thu
multi-stopAmerican Airlines
9h 22mSFO-BOS
6/4Tue
multi-stopAmerican Airlines
9h 13mBOS-SFO
$446
5/30Thu
multi-stopAmerican Airlines
8h 14mSFO-BOS
6/3Mon
multi-stopAmerican Airlines
8h 52mBOS-SFO
$448
6/2Sun
nonstopAlaska Airlines
5h 42mSFO-BOS
6/5Wed
nonstopAlaska Airlines
6h 35mBOS-SFO
$472
6/2Sun
nonstopAlaska Airlines
5h 42mSFO-BOS
6/10Mon
nonstopAlaska Airlines
6h 35mBOS-SFO
$479

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Flights to Portsmouth