$129 Find Cheap Flights from Boston to Port St. Lucie - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Port St. Lucie departing on 10/2. 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.
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Everything you should know

Cheapest round-trip
$169
Typical prices: $124-$317
Allegiant Air
Thu 10/29Sat 10/31
BOS - FLL • Non-stop
Cheapest one-way
$129
Typical prices: $88-$274
Frontier
Fri 10/2
BOS - FLL • 1 stop
Arrival airport
You can't fly directly to Port St. Lucie. It is served by Fort Lauderdale (FLL), located 83.9 miles from Port St. Lucie.
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Flight Deals
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Flight Deals

Cheap Flights from Boston to Port St. Lucie (BOS-FLL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Port St. Lucie 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 Boston to Port St. Lucie

Thu, Oct 29 - Sat, Oct 31
Allegiant Air Logo
12:34 pm - 4:09 pm
BOS
-
FLL
3h 35mnonstop
Allegiant Air Logo
6:00 am - 9:29 am
FLL
-
BOS
3h 29mnonstop
$169Allegiant Air
Sat, Sep 5 - Wed, Sep 9
Delta Logo
3:05 pm - 6:34 pm
BOS
-
FLL
3h 29mnonstop
Delta Logo
1:28 pm - 9:12 pm
FLL
-
BOS
7h 44m
1 stop
$169Delta
Sat, Sep 5 - Sat, Sep 12
Delta Logo
7:00 am - 10:22 am
BOS
-
FLL
3h 22mnonstop
Delta Logo
11:09 am - 6:00 pm
FLL
-
BOS
6h 51m
1 stop
$169Delta
Thu, Oct 29 - Mon, Nov 2
Allegiant Air Logo
12:34 pm - 4:09 pm
BOS
-
FLL
3h 35mnonstop
Allegiant Air Logo
6:40 am - 10:09 am
FLL
-
BOS
3h 29mnonstop
$173Allegiant Air
Sat, Aug 29 - Sat, Sep 5
JetBlue Logo
7:54 am - 11:20 am
BOS
-
FLL
3h 26mnonstop
JetBlue Logo
6:00 am - 9:14 am
FLL
-
BOS
3h 14mnonstop
$177JetBlue
Sat, Sep 12 - Sat, Sep 19
American Airlines Logo
7:00 am - 3:11 pm
BOS
-
FLL
8h 11m
1 stop
American Airlines Logo
12:10 pm - 7:27 pm
FLL
-
BOS
7h 17m
1 stop
$178American Airlines
Wed, Sep 2 - Wed, Sep 9
American Airlines Logo
1:28 pm - 9:41 pm
BOS
-
FLL
8h 13m
1 stop
American Airlines Logo
8:00 am - 4:05 pm
FLL
-
BOS
8h 05m
1 stop
$178American Airlines
Wed, Sep 9 - Sat, Sep 19
Southwest Logo
5:25 am - 11:15 am
BOS
-
FLL
5h 50m
1 stop
Southwest Logo
7:45 am - 3:20 pm
FLL
-
BOS
7h 35m
1 stop
$179Southwest
Sat, Sep 26 - Tue, Sep 29
Southwest Logo
5:50 am - 1:35 pm
BOS
-
FLL
7h 45m
1 stop
Southwest Logo
2:55 pm - 9:30 pm
FLL
-
BOS
6h 35m
1 stop
$179Southwest
Thu, Aug 27 - Thu, Aug 27
JetBlue Logo
5:10 am - 8:30 am
BOS
-
FLL
3h 20mnonstop
JetBlue Logo
11:40 am - 7:40 pm
FLL
-
BOS
8h 00m
1 stop
$208JetBlue
Useful Info

Good to know

Low season

September

Cheapest flight

$129
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Boston to Fort Lauderdale

When to book flights from Boston to Port St. Lucie

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

Flights from Boston to Port St. Lucie: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Boston to Port St. Lucie 
DavidFlew with Delta
BOS
-
FLL
Nov 2025
Get a flight that arrives FLL by or before 9:00 pm US Eastern, so that shops and restaurants are still open and available.
Verified travelerFlew with Spirit Airlines
BOS
-
FLL
Jul 2024
Check your departure time before go to the Aiport

FAQs for booking flights from Boston to Port St. Lucie

  • Which airports will I be using when flying from Boston to Port St. Lucie?

    When flying out of Boston you’ll be using Boston Logan Intl. Port St. Lucie does not have its own airport so you’ll be flying into nearby Fort Lauderdale airport, which is 83.9 mi away.

  • How long does a flight from Boston to Port St. Lucie take?

    Direct flights cover the 1,238 miles separating Boston and Port St. Lucie in about 3h 20m.

  • How many flights are there between Boston and Port St. Lucie?

    29 direct flights run between Boston and Port St. Lucie on a daily basis. On average, there are about 206 departures each week.

  • What’s the cheapest day of the week to fly between Boston and Port St. Lucie?

    Consider leaving on a Friday and avoid Thursdays if you are looking for the best rates. For your return to Boston, you’ll find the best rates on Fridays and the most expensive ones on Sundays.

  • How does KAYAK find such low prices on flights from Boston to Port St. Lucie?

    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 Boston to Port St. Lucie.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Port St. Lucie?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Port St. Lucie from Boston 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 Boston to Port St. Lucie?

    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 Port St. Lucie with an airline and back to Boston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Port St. Lucie?

    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 Port St. Lucie from Boston 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 Boston to Port St. Lucie?

    In the last 5 days, the cheapest one-way ticket between Boston and Port St. Lucie found on KAYAK was with Allegiant Air for $44. Allegiant Air offered a round-trip connection from $52 and Frontier from $107.

Top tips for finding cheap flights from Boston to Port St. Lucie

  • There is no airport in Port St. Lucie. Instead, you’ll be flying into Fort Lauderdale-Hollywood Airport when flying between Boston and Port St. Lucie.
  • The cheapest flight from Boston to Port St. Lucie was found 45 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 September.

Reviews of the top 5 airlines serving Boston to Port St. Lucie

 
Need help choosing which airline to fly with from Boston to Port St. Lucie? 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.
7.8
DeltaOverall score based on 8493 reviews
7.8Comfort
7.2Food
8.1Boarding
8.5Crew
7.8Entertainment
Airline reviews

Flight from Savannah arrived very late and we did not take off till 2 hours after scheduled departure!

2.0 MediocreBruce, Jul 2026
BOS - LGA
Read more Delta reviews

Flight from Savannah arrived very late and we did not take off till 2 hours after scheduled departure!

It is usually very pleasant. Good service for the price, international flights are even better

Flight attendant was very poor in taking care or showing attention. I slept up front for a few and missed the snacks. She saw me many times, went by me many times and never once asked if I needed anything. The whole 2 hours flight. And this is to a Diamond member in first.

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

this crew didn't care much. bumping carts into seats more times than i care to remember

Everything was fine except the entertainment was not working for half of the flight.

Don't waste your money or points on first class. Delta first class is a joke. The seats were rickety, the food was awful, and nothing worked, wifi, my light, the power plug - and it was dirty - the fold out table was gross. For 2-3 hours, tough it out in Economy.

They did a fine job. Can't wait to use Delta in the future.

It was poor a four hour delay and no explanation for the delay. What’s a 35 dollars going to do. It also made me miss my car rental,

It was on time. Flight was comfortable. Staff was nice. It was the way a flight should always be.

Allegiant canceled the flight. The flight the next day was full. Allegiant did not provide any compensation besides a refund. Last time on Allegiant.

Great. No choice for n/a. No food or entertainment options

just had water and there was plenty of leg & seat room. But then i don't weight 220#s!!

Not totally their fault- screaming kids that had zero parent intervention.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

I didn’t like it at all. I miss my second flight because of the delay on Allegiant Air now I m stuck in MCO.

My TSA number was missing from my ticket which shouldn’t have happened since it’s in my file. The on board flight attendant who was a male, did not want to help me put my luggage in the overhead bin and made a very rude comment and was very unpleasant. The good… the woman who fixed my ticket with the TSA number was excellent and I had extra legroom which was perfect.

Web site and app most difficult to access. Tel number not accessible. No answer at any time of day.

They have overselled the ticket and kicked me out from boarding, All my Plans were collapsed and important network meeting missed.also I booked direct flight i have to go through an 1 stop and it was frustrated.

Horrific. We were delayed due a flight attendant stuck in traffic en route to the airport. Over 100 people were then stuck in Charolette. Then I ran to make my layover only to find that my connection didn’t have a plane anymore. Waited 2.5 hours without any updates. On the flight we had to beg for even a pretzel option.

Terrible boarding and first class experience. Nice staff but overall disorganized, dirty plane.

The flight was delayed significantly and we sat on runway after landing for awhile. Best thing was the flight attendant, Jenny, in first class, who was very professional and attentive. She was excellent - the rest of the flight was not.

Early departure meant on time arrival. Only real problem was free internet had issues, although chatting with the internet help desk (you can do this via aainflight.com) got the issue resolved.

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

Great experience. Good dinner and service. FA's were very nice and attentive.

Jill was the flight attendant in first class she was fabulous!! Best flight attendant I have had in years.!! And I fly every other week. Other can learn from her!!

The business steward was absolutely amazing! Smiles and kindness! Wish all AA flights are like this one!

Flight delayed 4 times on a non-stop from BOS to SFO. Then when landed in SFO had to wait for 30 mins for a gate AT 3:30AM.

What a great flight. Seats were more comfortable than other airlines. Flight was full but very easy to navigate. No stress no drama

My experience with Jet Blue was wonderful. My experience with Kayak sucked and will never use again.

Messy plane that was falling apart Small screens that didn't work

Absolutely horrible. Flight was delayed 4 hours and they had no clue what was going on.

My check in was stressful. I somehow lost my seat from my original booking, the plane showed no availability/no seat when it was time to check-in. I called and was instructed to try to get a seat at the airport. I asked if it was a full flight and the travel agent said the site showed some seating but was not able to secure one for me. Why not? On my way to the airport the app finally revealed one available seat towards the back of the aircraft that I was able to book. It ended up being an overbooked flight, so glad I wasn't stuck.

My JetBlue experience was nice. The flights ran on time, the aircraft was clean and comfortable, and the flight attendants were attentive. My only issue, which is isolated to the low-cost (budget) option at JetBlue, is that the check in process makes the user feel that they have to buy their seats. The seats offered for purchase are upgrades from the budget seats you get (which are essentially the last seats remaining). The interface should not make it feel like you must purchase a seat.

It took 1-1/2 hours to get our luggage after we landed. That to me is unacceptable

The crew was openly hostile and condescending to the customers. They spent the majority of that time in the rear talking and seemed really agitated when people asked questions. I heard five different people told that the information they requested was in the handout or safety brief.

ticketing issues caused many customers to have to go back to check in after waiting in security, then go through security line again.

The flight was great . But you only had one vegan item on the whole flight and someone prior to me took it . I was so disappointed cause I came in from the flooded area and couldn’t pick up anything prior to my flight .

Plane was hot and miserable and the crew was rude!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

One of the worst travel experiences I've had. Had a flight scheduled with CVG to RSW on VLSWQX this morning departing at 5:30. Two individuals at the gate and one was in training. Not her fault but she didn't have the ability to check people in resulting in at least 15 families that didn't make it on the plane because they weren't checked into the system in time. When arriving at the airport to drop off our prepaid checked bags, the bag drop off agent asked if we could check our bags at the gate because of the long line. We said no problem so arrived at the gate by 5:00. They told those people that had previously paid for checked bags to stand off to the side while they let others that either didn't have a checked bag or their bag was already on the plan through. Realizing the gate workers had an issue, they either called for help or this lady showed up late for work as she didn't arrive until 5:15. The worker who had been there training the other individual and working diligently to make sure all passengers got on board. He even said that at one point all people that are currently in line are fine but asked the person in training to stand outside the ticketing area around 5:15 to notify any late travels that the flight was in boarding process and they arrrived too late. At that point, we're sill standing off to the side with our pre-paid checked bags patiently waiting. When the new lady arrived she couldn't have been more rude. It was an awful seen. Essentially they had asked for those without an assigned seat to board last, those with pre-paid checked bag stand off to the site and any traveling with a larger items that needed to be checked at the gate (such as a stroller), wait on the side. They realized that the flight needed to leave on time so the gate attendant shut the gate. So anyone without a seat assignment, those that had pre-checked bags, and the worst one I saw was a mother with two infant children was in line with use because she was asked to stand to the side because her stroller. When they shut the door to the plan they told her she could no longer get on. Her checked bags were already on the plane with her car keys in them, and the lady told her we couldn't accept anyone else on because the door was shut. She didn't even have a way to get home from the airport. Truely evil behavior. I've flown Frontier enough to know customer service is not a top priority in the company's mission, but this was an all-time low. I'm sending this after an 18 hour drive that our family just completed to Bonita Springs . I felt really bad for the lady being trained and the other individual trying to help, but when the new lady came to the gate she was truly one of the rudest individuals I've ever met. One lady had been there since 4am but because she didn't have an assigned seat they wouldn't let her on the plan.

I loved the staff on the plane. So friendly and helpful! However, there was an argument and misunderstanding by the staff and a customer at the gate, and the staff member was being unprofessional. When we arrived in Atlanta, we waited 1.5 hrs for our luggage to arrive. When I asked the airport attendant, they said Frontier had the longest wait for luggage out of any airlines, and that they could not be held responsible for the delay.

Better than expected. Staff were friendly and nice on both flights.

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

It was impossible to change a carry-on for a checked bag after the initial selection. The flight was delayed 14 hours "to allow for a late arriving aircraft." The seats were shockingly uncomfortable. This was only the second time I've seen seats that didn't recline in an airline. The first was in an East Bloc airline before the fall if the Iron Curtain.

Everything you need to know for your flight from Boston to Port St. Lucie

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