BOS - SAL

$99 Find Cheap Flights from Boston to San Salvador

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 San Salvador departing on 3/22. 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

KAYAK searches hundreds of travel sites at once for deals on flights to San Salvador

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to San Salvador.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to San Salvador.
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Everything you should know

Cheapest round-trip
$294
Overall average: $458
Spirit Airlines
So 2/22Do 2/26
BOS - SAL • 1 stop
Cheapest non-stop
$327
Typical prices: $328-$554
Avianca
Mo 4/27Mo 5/11
BOS - SAL • Non-stop
Top airlines
Spirit Airlines
Cheapest • from $294 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 9% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 26% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
4 days a week
There are direct flights from Boston to San Salvador 4 days a week: Mon, Wed, Fri, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
Start a new search
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We hope you love your trip to San Salvador!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to San Salvador (BOS-SAL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to San Salvador 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 San Salvador

So, Feb 22 - Do, Feb 26
Spirit Airlines Logo
5:27 am - 2:56 pm
BOS
-
SAL
10h 29m
1 stop
Spirit Airlines Logo
4:02 pm - 11:48 am
SAL
-
BOS
18h 46m
2 stops
$294Spirit Airlines
Mi, Feb 25 - Do, Mrz 5
Spirit Airlines Logo
6:10 pm - 2:56 pm
BOS
-
SAL
21h 46m
1 stop
Spirit Airlines Logo
4:02 pm - 12:08 pm
SAL
-
BOS
19h 06m
1 stop
$295Spirit Airlines
Di, Feb 24 - Do, Mrz 5
Multiple Airlines Logo
5:27 am - 2:56 pm
BOS
-
SAL
10h 29m
1 stop
Multiple Airlines Logo
4:02 pm - 11:41 am
SAL
-
BOS
18h 39m
2 stops
$296Multiple Airlines
Mo, Mrz 30 - Di, Apr 7
Spirit Airlines Logo
4:23 pm - 1:48 pm
BOS
-
SAL
23h 25m
2 stops
Spirit Airlines Logo
2:53 pm - 11:59 pm
SAL
-
BOS
7h 06m
1 stop
$297Spirit Airlines
So, Mrz 1 - Mo, Mrz 9
Multiple Airlines Logo
5:27 am - 2:56 pm
BOS
-
SAL
10h 29m
1 stop
Multiple Airlines Logo
6:34 am - 11:59 pm
SAL
-
BOS
15h 25m
1 stop
$298Multiple Airlines
Fr, Mai 1 - Mo, Mai 4
Frontier Logo
6:00 am - 12:32 pm
BOS
-
SAL
8h 32m
1 stop
Frontier Logo
1:42 pm - 12:05 pm
SAL
-
BOS
20h 23m
1 stop
$299Frontier
Mo, Mrz 16 - Di, Mrz 24
Spirit Airlines Logo
5:49 pm - 1:48 pm
BOS
-
SAL
21h 59m
1 stop
Spirit Airlines Logo
2:53 pm - 4:54 pm
SAL
-
BOS
24h 01m
2 stops
$300Spirit Airlines
Di, Mrz 3 - Mi, Mrz 18
Multiple Airlines Logo
5:27 am - 2:56 pm
BOS
-
SAL
10h 29m
1 stop
Multiple Airlines Logo
7:45 am - 2:50 pm
SAL
-
BOS
5h 05mnonstop
$301Multiple Airlines
Di, Feb 24 - Fr, Feb 27
Multiple Airlines Logo
5:27 am - 2:56 pm
BOS
-
SAL
10h 29m
1 stop
Multiple Airlines Logo
5:30 am - 11:59 pm
SAL
-
BOS
17h 29m
2 stops
$302Multiple Airlines
Fr, Mai 8 - Mo, Mai 11
Frontier Logo
6:00 am - 12:32 pm
BOS
-
SAL
8h 32m
1 stop
Frontier Logo
1:42 pm - 10:21 am
SAL
-
BOS
18h 39m
2 stops
$303Frontier
Booking Insights

KAYAK's insights & trends for Boston to San Salvador flights

Get data-powered insights and trends into flights from Boston to San Salvador to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Boston to San Salvador?

The average price of all round-trip flights from Boston to San Salvador clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to San Salvador on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Boston to San Salvador. For your return ticket, we recommend flying on a Saturday and avoiding Mondays for the best deals.

What is the cheapest month to fly from Boston to San Salvador?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to San Salvador, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to San Salvador is October, where tickets cost $337 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $749 and $523 respectively.

Can I save money by flying with a layover from Boston to San Salvador?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $469 on average.

How far in advance should I book a flight from Boston to San Salvador?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to San Salvador, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to San Salvador, you should book around 2 weeks before departure, which saves you about 9% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonJune
Cheapest flight$99
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly with an average 64% increase in price.
Flight from Boston to San Salvador

When to book flights from Boston to San Salvador

Are your dates flexible? Find out the best times to travel from Boston to San Salvador based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to San Salvador

  • What is the cheapest flight from Boston to San Salvador?

    In the last 3 days, the lowest price for a flight from Boston to San Salvador was $99 for a one-way ticket and $294 for a round-trip.

  • Do I need a passport to fly between Boston and San Salvador?

    Yes

  • Which airlines offer Wi-Fi service onboard planes from Boston to San Salvador?

    All the following airlines offer inflight Wi-Fi service on the Boston to San Salvador flight route: GOL, Delta, JetBlue, Alaska Airlines, Aeromexico, and American Airlines.

  • Which aircraft models fly most regularly from Boston to San Salvador?

    The Airbus A320neo is the aircraft model that flies most regularly on the Boston to San Salvador flight route.

  • Which airline alliances offer flights from Boston to San Salvador?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Boston and San Salvador, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Boston to San Salvador?

    You can catch a nonstop flight from Boston to San Salvador on on Monday, Wednesday, Friday, and Sunday.

  • Which is the best airline for flights from Boston to San Salvador, Delta or Copa Airlines?

    The two airlines most popular with KAYAK users for flights from Boston to San Salvador are Delta and Copa Airlines. With an average price for the route of $471 and an overall rating of 7.9, Delta is the most popular choice. Copa Airlines is also a great choice for the route, with an average price of $340 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Boston to San Salvador?

    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 San Salvador.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Salvador 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 San Salvador?

    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 San Salvador with an airline and back to Boston with another airline. Booking your flights between Boston and SAL can sometimes prove cheaper using this method.

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

    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 San Salvador from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Boston to San Salvador

  • Looking for a cheap flight? 25% of our users found flights on this route for $145 or less one-way and $375 or less round-trip.

Prefer to fly direct from Boston to San Salvador?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Boston Logan Intl to San Salvador El Salvador Intl.
Find which airlines fly direct from Boston Logan Intl Airport to San Salvador El Salvador Intl Airport, which days they fly and book direct flights.

Direct departures

Boston Logan Intl to San Salvador El Salvador Intl

Monday

Avianca

Avianca

Wednesday

Avianca

Avianca

Friday

Avianca

Avianca

Sunday

Avianca

Avianca

See more direct flights

Direct returns

San Salvador El Salvador Intl to Boston Logan Intl

Monday

Avianca

Avianca

Wednesday

Avianca

Avianca

Friday

Avianca

Avianca

Sunday

Avianca

Avianca

See more direct flights

Reviews of the top 5 airlines serving from Boston to San Salvador

 
See real verified KAYAK customer reviews for airlines flying from Boston to San Salvador. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to San Salvador? 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 8180 reviews
7.9Comfort
7.2Food
8.5Crew
7.8Entertainment
8.1Boarding
Airline reviews

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

2.0 MediocreJaspreet, Feb 2026
SEA - SMF
Read more Delta reviews

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

This was one of the worst flights I’ve been on in years. I upgraded to comfort and had such an uncomfortable experience. The person next to me was oversized - which I understand - however, they took up their space and mine. I could only use about 50% of my seat space to not be physically touching this person the entire flight and there was no spatial awareness. I also could not use the seat outlet because their body was obstructing it. It was very inconvenient. Their body kept touching me repeatedly during the flight and I felt very uncomfortable. To pay more for an upgraded space and then not even being able to use it was highly disappointing.

No wheel chair as requested at Atlanta arrival on first flight.

Only freetext wifi was available in flight; browsing WiFi required payment. Since the seats had no in flight entertainment, Delta should revisit this policy on this longer flight.

Only water, tea or coffee served midflight, even to comfort seating. Man next to me needed two seats and took up a portion of my seat and Delta did nothing.

The flight was great as well as the airline staff

First class and monitors weren’t working for mine & my husbands. Eventually fixed, but quite annoyed as we bought first class. Also, No foot rests.

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

It was delayed but other than that it was great.

Got on the plane and sat there for an hour before departure.

A lot things happened in this trip.The fly should be less stress.

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

Some of the Air hostesses are not that friendly. Need improvement

Simply as follows:- First, there was no vegetarian option for the meal Second, only 2 washrooms for the entire economy class.

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

They were super friendly bumped me up to exit row free of charge, All flight legs were on time

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

As always, Copa Airlines is great to fly on. The flights are always on time, the staff are pleasant and helpful and it's always a wonderful flying experience.

Cops Airlines is fantastic! The level of care and professionalism provided by the entire crew was top rate.

Check-in and in-flight staff were better than average. The seat was a fair size but too hard and not enough padding. The cushion/pillow provided is poor (thin and seems to be disposable ,it provides no effective cushioning or support). Food was OK-ish but no choice of inflight snacks and no easy place to get drinks other than water (I could ask for juice by intruding into the staff area at the back of the plane) Entertainment was very good actually. Overall better than I expected from a US-based airline (sorry!) but compared to ANA or Singapore it was so-so. (I live in Japan so they are my comparative airlines)

Everything was on time Will use united again for sure

Plane outlets in my row not working to charge phone. Staff response was, well it should be. Plug into seed for volume not working well. Had to find the sweet spot for plug in or it would shut off and on.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Fine not above and beyond as I had a connection that was delayed due to maintenance

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Terrible. Our first time back on United for 10 years, the seats in Polaris class are small and uncomfortable. They have squished too many people in to get more $$$. The staff are not friendly and not wanting to accommodate. I asked for two salads rather than a main meal and was advised no we wont do that. Then asked what I would like for breakfast and given something else anyway. I will not be flying United International anytime soon.

Same thing as flight from Pheonix to Newark. Uograded and Promised extra leg room and when I got to the seat it had none.

I upgraded my seat and was promised it would be next to the emergency door for extra leg room and they said it was premium plus but it was at the back of the plane...same thing happened from Newark to Dubai

Everything except the food and entertainment. It was a great experience though

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

Flight was on time and the meal and service were good.

The accessible bathroom should be visible to people in Economy class.

Flight was delayed for 2 hours, then last minute the change to on time. The satélite location is far and a nightmare to get to.

This was a horrible experience. I’ve experienced several delays at this point and still not home. I was supposed to be home by 8:30 last night and here I sit at 7 am on a plane STILL unable to go home because of American Airlines.

Lexus in first class was absolutely amazing! Beat flight attendant i’ve ever seen.

Generally good. Flight left on time and the seats are comfortable. Plenty of space in front if you in you choose a comfort plus seat, completely worth spending the extra money given the amount of hours the flight lasts. The food tastes good but I would say it’s a the amount is too little. The crew was friendly and efficient. There was a some turbulence at different points into the flight. American Airlines has good deals to NZ if you book with plenty of time before you plan on going.

the plane was so hot!! the air-conditioning was barely blowing. The flight was delayed, and we had to sit on the hot plane before take off for an extended amount of time, waiting on international passengers. Would not have been so bad if it was not so hot. They said it would get better after take off, but it did not.

It was delayed and I lost my connection flight to Cali and I missed my Mom's funeral

I actually upgraded to the medium level of seats from basic and even doing that it may have been physically the most uncomfortable flight I have ever had. They packed everyone like is a train to death camp. It was a red eye so I hoped to get some sleep but it was physically impossible to find a comfortable way to rest. I met other folks on the same flight and they said the same thing. It was an utterly miserable flight and if I have any other options I will never fly with them again

Boarding was late due to the company’s that cleaned the aircraft (very poorly done) and the catering company. The entertainment system was not working for this six hour flight, uncomfortable seats in business (barely any cushion or recline). The airline staff is very good but the planes are horrible and not well maintained.

Deplaning was a mess, I sat in business (seats are horrible) and the front door had a problem so we had to deplane from the rear exit. The stairs were not tall enough to reach so there was a large step down from the plane to the top of the stairs.

Staff are the rudest in the industry … awful customer service … will never fly Avianca again

Pros: we leave and arrive on time Cons: the most uncomfortable seats ever. You cant recline at all your seats. No entertainment No TVs flight attendants didn't provide even a glass of water. You have to go to back of the airplane and ask for one. I am Colombian and I remember seeing the flight attendants very neat, elegants which is or was a staple of Avianca.it was one with tennis shoes, no male up, the hair was messy... that was really odd.

Here we have another airline flying to Guatemala but doesn't have a plus or a less, just in the middle. Why? Well, first we don't have even free water Movie selection is poor Seats don't recline in some places Food selection is carb based Forgot to mention, customer service on the web is the worst. Good things; Very reliable on schedule Kind crew

Last seat of Bussines Class it does recline but passenger seating behind kept pushing since they did not have space once my seat was reclined

We waited for one hour to deboard the plane after landing. That could be better

I like the crew they're very friendly. I don't like. on five hour flight they not offered snacks. Any drink. Not even coffee

Everything you need to know for your flight from Boston to San Salvador

Information on your arrival and departure airports