$65 Find Cheap Flights from Miami to Portsmouth

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Miami to Portsmouth departing on 2/18. 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
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$78
Overall average: $192
Spirit Airlines
Fri 2/13Tue 2/24
MIA - BOS • Non-stop
Cheapest one-way
$65
Typical prices: $92-$274
Frontier
Wed 2/18
MIA - BOS • 1 stop
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from Miami to Portsmouth (MIA-BOS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Miami to Portsmouth that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Miami to Portsmouth

Fri, Feb 13 - Tue, Feb 24
Spirit Airlines Logo
8:37 pm - 11:59 pm
MIA
-
BOS
3h 22mnonstop
Spirit Airlines Logo
3:54 pm - 7:32 pm
BOS
-
MIA
3h 38mnonstop
$78Spirit Airlines
Thu, Mar 5 - Mon, Mar 9
Spirit Airlines Logo
8:37 pm - 11:59 pm
MIA
-
BOS
3h 22mnonstop
Spirit Airlines Logo
5:50 pm - 9:32 pm
BOS
-
MIA
3h 42mnonstop
$80Spirit Airlines
Fri, Feb 6 - Sat, Feb 7
Spirit Airlines Logo
12:55 pm - 4:18 pm
MIA
-
BOS
3h 23mnonstop
Spirit Airlines Logo
5:53 pm - 9:35 pm
BOS
-
MIA
3h 42mnonstop
$81Spirit Airlines
Tue, Feb 10 - Tue, Feb 17
Spirit Airlines Logo
12:55 pm - 4:18 pm
MIA
-
BOS
3h 23mnonstop
Spirit Airlines Logo
5:50 pm - 9:32 pm
BOS
-
MIA
3h 42mnonstop
$82Spirit Airlines
Thu, Jan 29 - Sun, Feb 1
Spirit Airlines Logo
12:56 pm - 4:19 pm
MIA
-
BOS
3h 23mnonstop
Spirit Airlines Logo
5:53 pm - 9:35 pm
BOS
-
MIA
3h 42mnonstop
$84Spirit Airlines
Fri, Feb 13 - Wed, Feb 18
Spirit Airlines Logo
8:37 pm - 11:59 pm
MIA
-
BOS
3h 22mnonstop
Spirit Airlines Logo
5:50 pm - 9:32 pm
BOS
-
MIA
3h 42mnonstop
$86Spirit Airlines
Fri, Jan 30 - Sun, Feb 1
Spirit Airlines Logo
12:56 pm - 4:19 pm
MIA
-
BOS
3h 23mnonstop
Spirit Airlines Logo
5:53 pm - 9:35 pm
BOS
-
MIA
3h 42mnonstop
$87Spirit Airlines
Fri, Jan 30 - Sun, Feb 1
Spirit Airlines Logo
12:56 pm - 4:19 pm
MIA
-
BOS
3h 23mnonstop
Spirit Airlines Logo
5:53 pm - 9:35 pm
BOS
-
MIA
3h 42mnonstop
$88Spirit Airlines
Tue, Feb 3 - Sat, Feb 7
Multiple Airlines Logo
6:59 pm - 1:03 am
MIA
-
BOS
6h 04m
1 stop
Multiple Airlines Logo
5:53 pm - 9:35 pm
BOS
-
MIA
3h 42mnonstop
$89Multiple Airlines
Thu, Feb 5 - Sun, Feb 8
Spirit Airlines Logo
12:55 pm - 4:18 pm
MIA
-
BOS
3h 23mnonstop
Spirit Airlines Logo
5:53 pm - 9:35 pm
BOS
-
MIA
3h 42mnonstop
$90Spirit Airlines
Useful Info

Good to know

Low seasonDecember
Cheapest flight$65
Best time to beat the crowds but there is an average 34% increase in price.
Most popular time to fly with an average 17% increase in price.
Flight from Miami to Boston

When to book flights from Miami to Portsmouth

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

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

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

    Direct flights cover the 1,259 miles separating Miami and Portsmouth in about 3h 14m.

  • How many flights are there between Miami and Portsmouth?

    40 direct flights run between Miami and Portsmouth on a daily basis. On average, there are about 281 departures each week.

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

    Consider leaving on a Wednesday and avoid Thursdays if you are looking for the best rates. For your return to Miami, you’ll find the best rates on Mondays and the most expensive ones on Thursdays.

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

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

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

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

    In the last 72 hours, the cheapest one-way ticket between Miami and Portsmouth found on KAYAK was with Frontier for $29. Frontier offered a round-trip connection from $36 and Spirit Airlines from $48.

Top tips for finding cheap flights from Miami to Portsmouth

  • There is no airport in Portsmouth. Instead, you’ll be flying into Boston Logan Airport when flying between Miami and Portsmouth.
  • The cheapest flight from Miami to Portsmouth was found 70 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 November, December and January. The cheapest month to fly is January.

Reviews of the top 5 airlines serving Miami to Portsmouth

 
Need help choosing which airline to fly with from Miami 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.
7.9
DeltaOverall score based on 8066 reviews
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
7.9Comfort
Airline reviews

I have diamond medallion status and usually we are in comfort plus . We were in main this time ( which was fine ) and my husband wanted wine . I have at least 10 vouchers for drinks that are good for this year and next! The attendant would not take the picture of the voucher as proof and never came back to check as She asked me to pull it up on delta Wi-Fi. Instead my husband just used his Amex to buy the wine . Disappointing!!!

10.0 ExcellentAnne, Jan 2026
MCO - DTW
Read more Delta reviews

I have diamond medallion status and usually we are in comfort plus . We were in main this time ( which was fine ) and my husband wanted wine . I have at least 10 vouchers for drinks that are good for this year and next! The attendant would not take the picture of the voucher as proof and never came back to check as She asked me to pull it up on delta Wi-Fi. Instead my husband just used his Amex to buy the wine . Disappointing!!!

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

The only thing nice I can say is the flight crew was really nice and apologetic about the situation. They shared as much information as they had and advised us on what we could do about missing connecting flights. The boarding process was so slow. The gate agent was working by herself and should have had someone working with her. It took almost an hour to board because she was trying to board a full flight of people and provide customer service to everyone who was flying standby and/or had questions. It was really chaotic. This didn't help the fact that we were delayed and folks were missing connections the longer it took.

The food is terrible. The staff is wonderful. Comfort is good.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Getting to the flight was arduous and lengthy. The flight itself was good but the food option wasn’t a good selection. I need to do a Kosher option on my return. Flight crew were nice

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

This flight was straightforward and without difficulty. Service was OK, but I continue to be underwhelmed by level of attention given to Sky Priority passengers.

The ticket agents in West Palm Beach on Friday afternoon Nov. 7th were incredible in getting us on an earlier plane to Atlanta during the government shutdown. Had the taken our original flight we would have missed our connection. She did this on her own, We didn't even have to ask, and she did it all with a smile and showing genuine concern that we would be taken care of. We are very grateful and thankful. We fly often, and now we will be sure to fly Delta.

Non stop on long haul is the way to go. Great experience

UGH I HAD TO MISS MY FIRST FLIGHT TO TAMPA CAUSE OF THE 10 MINUTE DELAY OF THE ORLANDO TO MIAMI ONE SO THEY HAD ME GET ANOTHER TICKET. I AM NOT HAPPY AT ALL BECAUSE IT MADE ME MISS MY CONNECTING FLIGHT FROM TAMPA TO LONDON AND FORCED ME TO MISS A DAY AT MY ROOM IN THE UK.

We were 4+ hours delayed. AA is absolutely obnoxious. They just kept pushing back the time to the point where we did not get into Vegas until after midnight when we were supposed to arrive like 845pm.

My last flight on 25 Dec, it’s Christmas Day, everyone happy and very good mood. I really enjoy traveling with Americans Airlines from Miami to Minneapolis my home town after long flight from lhe to Doha then Miami. Thank you again to make my travels comfortable and relaxed. Best regards

I like that the crew kept us informed but we moved back and forth from gate to gate before the aircraft arrived.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

We will be writing a long, detailed letter to corporate about our awful experience with American airlines.

Food was ok, but not as good as I have had before on AA.

Pretty good. The food was just mediocre, the boarding and crew were good.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

The delays and cancellations kept me stuck in Miami for an additional 24 hours, and the whole thing seemed extremely disorganized

Horribly rude check in at airport, worst in 25 years of flying. All over a simple issue they could have googled to resolve.

1) No pilot available for 1 hour 2) no room for most passengers careyon in overhead—-> stowed below 3) when we landed we had to wait 45 min. Before docking at gate as gate was not ready

Good. No issues except a slight delay. Crew came in late.

The flight was two hours late due to a computer fault and resulting maintenance. Nothing was offered as compensation beyond bottles of water during the time we were deplaned and waiting in the terminal.

There was a fowl odour coming from the lavatory the entire flight

very difficult boarding process - aggressive passengers not the friendliest crew

WiFi was not eorkig (again) And the plane was from 1990 with the screens which were.not touch and most didn’t even work and if lucky could tune in tv

It was great. I had never flown on JetBlue before, but would be very happy to fly with them in the future.

The captain gave good announcements and the flight attendants were friendly. The WiFi was pretty good. The plane itself looked very old inside and the seats were very uncomfortable. The screens in the seat backs were the smallest I’ve ever seen. There were so many loud and obnoxious kids on this flight and the parents didn’t do much to try to quiet them down. Some had videos and games on tablets with higher than necessary volume going the whole time.

Spend hours delayed with no food, water anything sitting on the aieplane with no ability to eat or use the restroom. My entire experience was the absolute worst. I will never fly jet Blue again.

Flight was not on time and it was very annoying flight. Keep changing gates.

The flights were very uncomfortable the seats don't have much leg room at all and they are pretty hard as well.

It was delayed but the landing was the smoothest in a while that I’ve had.

Second time in 3 days I walked off the plane late. This time - almost an hour.

Everything went well. The flight was slightly delayed however we landed on time.

Horrible experience. First and last time using this airline. Made an announcement that boarding will start in 15 minutes, canceled the flight 5 minutes later due to no airline staff. Had to book another flight on Delta since Spirit had no other flights arriving to my original destination the same day. I wouldn't recommend anyone to fly with Spirit. No wonder why it consistently ranks high among worst airlines.

spirit delayed my first flight 9 hours and then cancelled my flight back home. Very disappointed with their service.

Flight was delayed from 10:09pm back to 12:41am and actually took off closer to 1am as they were waiting for an additional flight attendant. Plane was new and crew was fine once we got moving but the delay was rough. Also Spirit (have flown this twice) lands at the satellite gates at BNA and there is a ground shuttle to get you back to the main terminal that adds outdoor elements, extra walking and about 20 min total to the arrival timing. BNA may eventually connect this concourse in a better way as they grow but it’s notable.

They canceled the flight at the last minute! No customer service. Unable to get another flight for 3 days!! Spirit was NO help at all!!

Boarding process was slightly delayed but took an extra long time which caused a 30 minutes delay.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

This company socks. It's fraud. They canceled our flight yesterday, and today we were late because of a really long line at the check in bag. At the rebook station, there was ton of people. The workers were all rude. I am gonna make a report to FTC.

Flight got delayed for 5 hours no good explanation was offered ;(

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

Everyone seemed to be in zone 1 for boarding. Maybe break it up a little. Otherwise, smooth flight.

The experience was good. No frills but I got there safe and sound and on time.

After boarding and un-boarding twice over 6+hours, the flight was canceled.

Severe turbulence. Captain never came on to reassure passengers after things settled down.

Boarding in Orlando was not good. Giant mob at the gate, should have been lines.

My flight was delayed by two hours which made it so that I would miss my layover flight. I stood in line for customer service for over an hour and when I reached the agent she told me to scan a QR code and it'll give me options. I wasn't offered any help, guidance or compensation, only told that I have options but that I had to figure it all out myself. I was refunded part of the trip and had to buy an expensive same day ticket from another airline in order to get home. I will never fly Frontier again.

Everything you need to know for your flight from Miami to Portsmouth

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