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Find cheap flights from Los Angeles to Portsmouth from $158

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Los Angeles to Portsmouth departing on 5/19. 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
Tue 5/28
Tue 6/4

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Good to know

Low season

January

High season

August

Cheapest flight

$158
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Los Angeles to Boston

When to book flights from Los Angeles to Portsmouth

Are your dates flexible? Find out the best times to travel from Los Angeles 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 Los Angeles to Portsmouth

  • Which airports will I be using when flying from Los Angeles to Portsmouth?

    When flying out of Los Angeles you’ll be using Los Angeles. 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 Los Angeles to Portsmouth take?

    Direct flights cover the 2,603 miles separating Los Angeles and Portsmouth in about 5h 27m.

  • How many flights are there between Los Angeles and Portsmouth?

    60 direct flights run between Los Angeles and Portsmouth on a daily basis. On average, there are about 421 departures each week.

  • What’s the cheapest day of the week to fly between Los Angeles and Portsmouth?

    Consider leaving on a Saturday and avoid Fridays if you are looking for the best rates. For your return to Los Angeles, you’ll find the best rates on Tuesdays and the most expensive ones on Mondays.

  • How does KAYAK find such low prices on flights from Los Angeles 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 Los Angeles to Portsmouth.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portsmouth from Los Angeles 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 Los Angeles 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 Los Angeles with another airline.

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

    In the last 72 hours, the cheapest one-way ticket between Los Angeles and Portsmouth found on KAYAK was with American Airlines for $158. Spirit Airlines offered a round-trip connection from $235 and JetBlue from $236.

See more FAQs

Top tips for finding cheap flights from Los Angeles to Portsmouth

  • There is no airport in Portsmouth. Instead, you’ll be flying into Boston Logan Airport when flying between Los Angeles and Portsmouth.
  • The cheapest flight from Los Angeles to Portsmouth was found 82 days before departure, on average.
  • Book at least 1 week 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 January.
See more tips

Top 5 airlines serving Los Angeles to Portsmouth

 
Need help choosing which airline to fly with from Los Angeles 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
DeltaOverall score based on 10932 reviews
8.6crew
7.9comfort
7.4food
8.0entertainment
8.2boarding
Airline reviews

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

2.0 MediocreCarisa, Mar 2024LAX - HNL
Read more about Delta reviews

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

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

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

I guess they don’t serve drinks on planes anymore

Delta planes have the WORST seat comfort of any plane in history. It's the opposite of ergonomic, in every sense. They also recline minimally, are covered in a vinyl and have no feet rests. Then the disembarking process is chaotic and time consuming (because of the way they load the plane and deal with luggage). Overall, somewhat frustrating but we arrived safely :)

It was a very smooth ride. Not sure on a flight departing at midnight can be much better but it was late arriving and I had an early day so really just the logistics.

Really liked the choice of the 4 free snack options. Crew great. Good vibe on plane.

Very disappointed in the food selection. It was not good compared to other airlines.

Good breakfast granola bar good crew seamless flight and baggage transfer we’ll done!

Everything was great but the difference in paying for comfort + did not seem worth it.

Great. Loved that there was WiFi on flight to keep in touch and excellent service of beverages and snacks.

Business class is great. New airplane, very comfortable, better than some of the major airlines I am used to

Terrible. Flight was cancelled due to the weather in the east and sout east(florida). Did not get any compesation of any kind. According to them, it was not under their control so I lost all the money paid for the 2 fairs from Raleigh, NC to Orlando, Fl.

great flight. Pilot was communicative, flight attendants were excellent. Really nice experience except my tv didn’t work.

Overall, the flight was better than the flight I took to go to Florida, which had a bunch of problems. The crew is really nice and the plane was new so it had a small problem when we were on the runway, but the flight itself was great. They even made some time back up, which is always a good thing.

There were multiple delays but JetBlue tried to make the boarding and departure process as quick and efficient as possible. The crew was as detached from reality as could be, meaning: not very friendly and just doing things by the numbers.

I had back trouble prior to my flight and everyone was great about helping me.

40 minute delay before take off after boarding flight. Bright lights throughout night flight due Issues with light panels. In flight Entertainment nonfunctional

Everything was good except for deplaning in NY. Took way too long!!

I really liked the way snacks and drinks were available throughout the flight!!! The flight attendants were also all fantastic!

Left 2 hours later for delayed I had to take care a kid with special need since people don’t want to move to accommodate the rest of the family. . It wasn’t bad but that made me upset that people can be that selfish.

For a 22 minute flight all you expect is for it to be safe and comfortable

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

No snacks served! Seating in the kast row in uncomfortable.

Wouldn’t let me check in said couldn’t find a ticket had to wait very long Time

I liked that we arrived earlier, you could improve your snacks give away

Flight was fine, it was delayed but only 30 minutes, staff were efficient, lady making announcements at LAX was really hard to understand but the rest were great.

I really enjoyed the staff and crew! Very positive and happy people! Made the experience easier! The entertainment was a bit lack luster. Better movie options as well as equipment that works smoother could be nice. My ear buds from the airline didn’t work and my tv screen had a terrible delay that made it hard to search for things to watch. Also the selections were very limited.

Flight was diverted to Canberra because Not enough fuel to circle on Sydney’s skies waiting for showers to pass. After that everything went wrong. It took forever to put fuel. Once back rolling, we stopped short of takeoff because crew had reached maximum work hours per shift. Back to gate we waited and waited in the plane with no water and no food - a total of 4 hours. Received contrasting news about the follow up of our trip. Finally we disembarked but our luggage could not be processed there as not enough custom agents. We ended up on buses and arrived at Sydney airports after a 3 hours trip. There we had to queue in line with 240 more passengers to file a lost luggage claim. We received the luggage after 48 hours, many of which spent holding with non-existent United customer service. Never able to speak to an actual person during those long phone calls. Finally on a chatline I could talk to a baggage agent, who filed another report as our luggage did not appear anywhere in their system. Thus it was surprising to get it back.

I got upgraded, so comfort was not an issue. But as always, it is the people from baggage handlers, flight attendants, pilots etc. that make the difference.

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!

Nothing, flight was supposed to leave at 758 am. My flight didn’t leave until 430 pm. Spent the whole day at the airport.

1st flight was delayed because of broken radio, missed connection but they got us on very next plane 1 hr later. Return flights were both delayed by 1 hr each. Crews were fine. Planes ok, but had to check carry ons.

It’s never made crystal clear if your flight will have in flight entertainment or not. That should be explicit

There was a male flight attendant who seemed like he was VERY upset the entire flight. At one point I went to the back of the flight with my 1 year old to get some space in an empty row, (she was not making noise) and he was sitting in a row where he could see us. He started huffing and puffing and throwing a tantrum, throwing the window shade up and down, and we were very uncomfortable. My husband also had a weird experience with him. I just don't think he should be flying when under such stress.

19 hr delay requiring a change to red eye. No lounge access without paying. Loss of seat upgrade fee.

Crew was nice and accommodating, but someone failed to inspect the plane before the passengers got on and we ended up deplaning and changing planes when this could have been avoided.

One hour late taking off. Concerning, very hard landing. Uncomfortable seats with no recline. Extremely slow baggage claim. Very professional, knowledgeable flight attendants. Brand new, very clean plane.

Can’t say there was anything I particularly liked. Seats were very tight, leather wrapped plastic. I followed up a much longer and cheaper trip from Honolulu on southwest, everything was phenomenal, this flight was the exact opposite. Blows my mind they charge for water of all things. One of the attendants seemed very rude, I watched a taller gentleman a couple rows forward with his knees pressed into the back of the seat ahead, while the woman in that seat leaned forward the entire flight, I’m sure because she could feel his knees. I’ll be avoiding spirit like the plague from here forward.

Enjoyed the experience, on time flights, friendly staff the WiFi was intros d kept cutting out.

Awful experience. Both flights were delayed several times with weather but also crew members being the official cause. The vouchers are unusable and insufficient ($50 voucher to fly the same crappy airline is a joke for putting me on a red-eye that landed at 3:00 am). The aircrafts were old and uncomfortable (have a real pocket on the seat, for crying out loud!).

I was penalized for a mistake made by your team

I was charged $99 for a carryon on the 4th out of 4 flights only. It was placed under the seat just like the other times. Ridiculous.

Was 2 hours early for my flight they canceled my flight 2 hours before flight took off then told me to get a flight 24 hours later I had to pay $297 for I missed it. I had flight insurance and bc they put I missed my flight I had to wait 2 days to book a new flight. Flight insurance through spirit isn’t worth anything because I ended up paying for my hotel and flight and insurance didn’t cover anything!!

I MISS MY FLY AND THEY NOT EVEN TRY TO GET ME ALEAST A CREDIT TO BUY ANOTHER TICKET BUT IS FINE I WOULD NEVER BUY A TICKET WITH SPIRIT EVER AGAIN

Good enough for the price. I will rate great if water is available for passenger.

The whole expierience was one to forget. From the $99 carry on fee, to the seats not reclining and not having any headrest adjustment, to the completely disrepectful gate agents to paying an arm and a leg for snacks on the plane. The whole expierience was something that I will never put myself through again. I will never be flying spirit again. Even if I have to wait another day just to catch another airline flight that is what I will do. Completely unacceptable.

Book cheap flights from Los Angeles to Portsmouth

Recent round-trip flight deals

5/11Sat
1 stopSpirit Airlines
10h 10mLAX-BOS
5/12Sun
2 stopsSpirit Airlines
27h 08mBOS-LAX
$235
5/31Fri
1 stopJetBlue
7h 35mLAX-BOS
6/4Tue
nonstopJetBlue
6h 40mBOS-LAX
$236
5/8Wed
2 stopsSpirit Airlines
23h 22mLAX-BOS
5/12Sun
1 stopSpirit Airlines
22h 59mBOS-LAX
$237
5/4Sat
1 stopSpirit Airlines
11h 20mLAX-BOS
5/11Sat
1 stopSpirit Airlines
21h 49mBOS-LAX
$238
6/10Mon
2 stops
25h 19mLAX-BOS
6/13Thu
1 stop
22h 37mBOS-LAX
$252
5/3Fri
1 stop
25h 11mLAX-BOS
5/8Wed
2 stops
12h 30mBOS-LAX
$279
5/11Sat
nonstopDelta
5h 35mLAX-BOS
5/12Sun
nonstopDelta
6h 21mBOS-LAX
$282
5/10Fri
nonstopDelta
5h 31mLAX-BOS
5/15Wed
nonstopDelta
6h 21mBOS-LAX
$312
6/10Mon
1 stopAmerican Airlines
8h 14mLAX-BOS
6/18Tue
1 stopAmerican Airlines
8h 17mBOS-LAX
$363
5/13Mon
1 stopAmerican Airlines
8h 00mLAX-BOS
5/17Fri
1 stopAmerican Airlines
8h 36mBOS-LAX
$371

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Recent one-way flight deals

5/19Sun
1 stopAmerican Airlines
7h 27mLAX-BOS
$158
5/13Mon
nonstopDelta
5h 32mLAX-BOS
$159
5/16Thu
3 stopsSpirit Airlines
22h 07mLAX-BOS
$160
6/25Tue
1 stopSpirit Airlines
18h 36mLAX-BOS
$161
5/16Thu
2 stopsSpirit Airlines
18h 09mLAX-BOS
$162
5/13Mon
nonstopJetBlue
5h 28mLAX-BOS
$164
6/11Tue
nonstopJetBlue
5h 30mLAX-BOS
$205
5/9Thu
nonstopUnited Airlines
5h 38mLAX-BOS
$247
5/27Mon
nonstopUnited Airlines
5h 38mLAX-BOS
$259
5/5Sun
2 stopsAlaska Airlines
11h 34mLAX-BOS
$376

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Last minute flights from Los Angeles to Portsmouth

Last minute flight, train and bus deals

5/3Fri
multi-stop
25h 11mLAX-BOS
5/7Tue
multi-stop
20h 14mBOS-LAX
$234
5/3Fri
multi-stop
25h 11mLAX-BOS
5/7Tue
multi-stop
26h 33mBOS-LAX
$240
5/3Fri
multi-stopSpirit Airlines
11h 45mLAX-BOS
5/6Mon
multi-stopSpirit Airlines
20h 55mBOS-LAX
$245
5/3Fri
multi-stopSpirit Airlines
16h 56mLAX-BOS
5/7Tue
multi-stopSpirit Airlines
29h 15mBOS-LAX
$246
5/3Fri
multi-stopAmerican Airlines
7h 58mLAX-BOS
5/11Sat
nonstopAmerican Airlines
6h 32mBOS-LAX
$390
5/2Thu
multi-stopJetBlue
9h 21mLAX-BOS
9/5Thu
nonstopJetBlue
6h 29mBOS-LAX
$399
5/2Thu
nonstopJetBlue
5h 36mLAX-BOS
9/5Thu
nonstopJetBlue
6h 29mBOS-LAX
$410
5/3Fri
multi-stopAmerican Airlines
8h 18mLAX-BOS
5/9Thu
nonstopAmerican Airlines
6h 24mBOS-LAX
$416
5/2Thu
multi-stopDelta
7h 23mLAX-BOS
5/11Sat
nonstopDelta
6h 26mBOS-LAX
$419
5/2Thu
multi-stopDelta
10h 20mLAX-BOS
5/13Mon
nonstopDelta
6h 21mBOS-LAX
$454

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Flights to Portsmouth