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$138+ Cheap flights from Boston (BOS) to San Salvador (SAL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAL
Apr 27 — May 41
Mon 4/27
Mon 5/4
1 adult, Economy
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Find cheap flights from Boston to San Salvador with Cheapflights

1. Tell us where you want to go

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2. Select your favorite providers

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Cheapflights Tip: The best prices from Boston Logan Intl to San Salvador El Salvador Intl are usually found in October or September, booked 46 days in advance, depart on a Saturday or Sunday and return on a Thursday

Cheap flight deals from Boston to San Salvador

Cheapest flights from Boston to San Salvador
Explore the most affordable flight options available from Boston to San Salvador. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2026.

This Frontier deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1012:45 pm
BOS
-
SAL
2 stops12h 00m
Frontier
Mon 4/1311:50 pm
SAL
-
BOS
1 stop9h 55m
Frontier
Deal found 3/25$297
This Frontier deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:45 pm
BOS
-
SAL
2 stops12h 00m
Frontier
Mon 4/201:37 pm
SAL
-
BOS
2 stops18h 44m
Frontier
Deal found 3/25$302
This FlightHub deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1212:45 pm
BOS
-
SAL
2 stops12h 00m
Frontier
Mon 4/201:37 pm
SAL
-
BOS
1 stop9h 54m
Frontier
Deal found 3/27$303
This Priceline deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/612:42 pm
BOS
-
SAL
1 stop12h 03m
Frontier
Mon 4/1311:50 pm
SAL
-
BOS
1 stop9h 55m
Frontier
Deal found 3/27$311
This FlightHub deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/411:46 am
BOS
-
SAL
2 stops36h 59m
Frontier
Mon 4/611:50 pm
SAL
-
BOS
1 stop23h 36m
Frontier
Deal found 3/23$313
This Frontier deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/512:47 pm
BOS
-
SAL
1 stop11h 58m
Frontier
Mon 4/201:37 pm
SAL
-
BOS
2 stops18h 44m
Frontier
Deal found 3/24$315
This Frontier deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/612:45 pm
BOS
-
SAL
2 stops12h 00m
Frontier
Fri 4/171:37 pm
SAL
-
BOS
1 stop9h 54m
Frontier
Deal found 3/24$323
This Orbitz deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2612:28 pm
BOS
-
SAL
1 stop26h 03m
Multiple Airlines
Mon 5/117:45 am
SAL
-
BOS
Nonstop5h 05m
Multiple Airlines
Deal found 3/27$324
This CheapOair deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:20 am
BOS
-
SAL
1 stop19h 25m
Multiple Airlines
Mon 5/47:45 am
SAL
-
BOS
Nonstop5h 05m
Multiple Airlines
Deal found 3/24$329
This Frontier deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/712:42 pm
BOS
-
SAL
2 stops21h 41m
Frontier
Mon 4/201:37 pm
SAL
-
BOS
2 stops18h 44m
Frontier
Deal found 3/24$330

Find flight deals from Boston to San Salvador

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Salvador (SAL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$297
(Frontier)

One-way from

$138
(Travelocity)

Popular in

December

Cheapest in

October

Average price

$452

Good round-trip deal

$468 or less

Good one-way deal

$218 or less
Provider with most accurate pricing for Boston Logan Intl-San Salvador El Salvador Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-San Salvador El Salvador Intl flights.
Search Deals
From Boston Logan Intl to San Salvador El Salvador Intl
Search Deals
One-way flight from Boston Logan Intl to San Salvador El Salvador Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to San Salvador El Salvador Intl.
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to San Salvador El Salvador Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to San Salvador that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2026.
Use the filters below to find and compare flights from Boston to San Salvador that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSan Salvador

BOS - SAL

BOSSAL

Boston Logan Intl

Wed 5/27

8:52 am-8:33 pm

1 stop13h 41m

San Salvador El Salvador Intl

Wed 6/3

4:53 am-11:08 pm

1 stop16h 15m

$399

BostonSan Salvador

BOS - SAL

BOSSAL

Boston Logan Intl

Wed 4/15

6:00 am-8:49 pm

2 stops16h 49m

San Salvador El Salvador Intl

Wed 4/22

6:00 am-9:25 am

2 stops25h 25m

$415

BostonSan Salvador

BOS - SAL

BOSSAL

Boston Logan Intl

Wed 9/16

7:25 am-2:30 pm

1 stop9h 05m

San Salvador El Salvador Intl

Wed 10/7

1:25 pm-9:24 am

2 stops17h 59m

$415

BostonSan Salvador

BOS - SAL

BOSSAL

Boston Logan Intl

Thu 9/10

7:25 am-2:30 pm

1 stop9h 05m

San Salvador El Salvador Intl

Sun 9/20

6:00 am-9:23 am

2 stops25h 23m

$415

BostonSan Salvador

BOS - SAL

BOSSAL

Boston Logan Intl

Wed 4/22

4:53 pm-2:30 pm

1 stop23h 37m

San Salvador El Salvador Intl

Wed 4/29

6:00 am-9:25 am

2 stops25h 25m

$427

BostonSan Salvador

BOS - SAL

BOSSAL

Boston Logan Intl

Sat 5/9

5:35 am-12:26 pm

1 stop8h 51m

San Salvador El Salvador Intl

Thu 5/14

1:51 pm-1:23 am

1 stop9h 32m

$431

BostonSan Salvador

BOS - SAL

BOSSAL

Boston Logan Intl

Wed 4/22

9:41 am-8:49 pm

1 stop13h 08m

San Salvador El Salvador Intl

Tue 4/28

3:40 pm-11:01 am

2 stops17h 21m

$435

BostonSan Salvador

BOS - SAL

BOSSAL

Boston Logan Intl

Wed 4/15

11:00 am-8:49 pm

2 stops11h 49m

San Salvador El Salvador Intl

Tue 4/28

3:40 pm-2:48 pm

2 stops21h 08m

$435
Quickest round-trip

BostonSan Salvador

BOS - SAL

BOSSAL

Boston Logan Intl

Wed 8/19

6:55 am-12:04 pm

1 stop7h 09m

San Salvador El Salvador Intl

Fri 8/28

1:19 pm-1:06 am

1 stop9h 47m

$446

BostonSan Salvador

BOS - SAL

BOSSAL

Boston Logan Intl

Wed 8/19

6:00 am-8:49 pm

3 stops16h 49m

San Salvador El Salvador Intl

Sat 8/29

1:50 pm-11:07 am

2 stops19h 17m

$456

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from Boston to San Salvador

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to San Salvador in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-San Salvador flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-San Salvador flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-San Salvador flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-San Salvador flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-San Salvador flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to San Salvador

Have a flexible travel schedule? Discover the best time to fly to San Salvador from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to San Salvador. Price data was last updated on March 13, 2026.

The price you pay for your flight from Boston to San Salvador may vary depending on when you book. For the best chance of a lower fare, look to book 46 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Boston to San Salvador?

Currently, September is the cheapest month in which you can book a flight from Boston to San Salvador (average of $123). Flying from Boston to San Salvador in July is currently the most expensive (average of $253). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to SAL?

Find hourly flight availability from Boston to San Salvador. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2026.

When flying from Boston to San Salvador, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Boston to San Salvador?

Reviews of airlines servicing San Salvador

Get insights into the airlines that provide service to San Salvador. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Salvador. Reviews last updated March 28, 2026.
Read reviews from past customers who have flown Delta,Copa Airlines, andUnited Airlines from Boston to San Salvador. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,358 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,358 reviews
Delta
7.9
Good
8,358 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Copa Airlines
7.5
Good
1,577 reviews
Delta
7.9
Good
8,358 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,502 reviews
Delta
7.9
Good
8,358 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,520 reviews
Delta
7.9
Good
8,358 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Avianca
6.5
Okay
2,506 reviews
Delta
7.9
Good
8,358 reviews

Overall

7.9

Boarding

8.1

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Boston to San Salvador. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Boston to San Salvador flight route?

    This flight path from Boston Logan Intl to San Salvador El Salvador Intl was viewed by 42 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Boston to San Salvador?

    Airlines like Copa Airlines and United Airlines fly from Boston to San Salvador in about 13h 41m. The time it takes to get you to your destination can typically vary by up to 3h 08m. Boston and San Salvador are separated by a distance of 2269 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Boston to San Salvador round-trip?

    According to our current data, Copa Airlines ($92), Spirit Airlines ($121), and Delta ($140) offers the cheapest pricing from Boston to San Salvador. You may be able to fly from Boston to San Salvador for 79% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Boston to San Salvador one-way?

    One-way options have recently been found by users for as low as $84 on Delta. Other airlines that offer cheap prices include Frontier from $87 and Copa Airlines from $92 one-way.

  • What are the cheapest flights from Boston to San Salvador?

    While on average a flight from Boston to San Salvador is generally $424, our data shows the cheapest flight currently is $140. When looking at the most popular route, (Boston Logan Intl - San Salvador El Salvador Intl), you can expect to pay $306 for that flight.

  • Where are the most common layover locations when flying from Boston to San Salvador?

    Of the flights from Boston to San Salvador that have layovers, most of them stop in Miami. Atlanta is the second most popular location for layovers on flights from Boston to San Salvador.

  • What are some popular things to do or see while on a layover in Miami?

    Kaseya Center, Bayfront Park, and Bayside Marketplace are currently the most popular points of interest in Miami at the moment. Kaseya Center, Bayfront Park, and Bayside Marketplace can be accessed by traveling approximately 6.2 mi, 6.4 mi, and 6.4 mi, respectively from Miami. Those on a layover in Miami in need of a rental car can book one at Miami for about $29.

  • What are some popular points of interest to see during a layover in Atlanta?

    Most Atlanta visitors opt to spend their time at Georgia Aquarium, Fox Theatre, and Centennial Olympic Park. Those on a layover in Atlanta interested in visiting Georgia Aquarium, Fox Theatre, or Centennial Olympic Park can do so by traveling 8.6 mi, 9.3 mi, and 8.4 mi, respectively from Atlanta Hartsfield-Jackson. Those looking to explore during their layover in Atlanta can rent a car from Atlanta Hartsfield-Jackson for about $57 per day.

  • Where are the least popular layover locations for Boston to San Salvador flights?

    Flights departing from Boston and landing in San Salvador layover in Atlanta least frequently.

  • Can I find deals for flights from Boston to San Salvador that include hotel bookings?

    Yes. In addition to deals on Boston to San Salvador flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to San Salvador?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to San Salvador.

  • Can I find deals for business class flights from Boston to San Salvador?

    Yes. Cheapflights offers flight deals from Boston to San Salvador by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, September is the cheapest month in which you can book a flight from Boston to San Salvador (average of $123). Flying from Boston to San Salvador in July is currently the most expensive (average of $253). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Salvador?

Book flights to San Salvador if you plan to visit one of these locations
Acajutla
La Libertad
El Cuco
Sonsonate

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boston to San Salvador

See prices for flight routes from nearby airports that may be better suited for you.
Albany to San Salvador flights

Top 7 airlines flying from Boston to San Salvador

Discover the top 7 airlines that operate flights from Boston to San Salvador. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$92Average$314FlexibilityNo cancel feeOn-time70%
Spirit AirlinesCheapest$121Average$311FlexibilityNo cancel feeOn-time65%
DeltaCheapest$140Average$398FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$152Average$470FlexibilityNo cancel feeOn-time69%
FrontierCheapest$160Average$513FlexibilityNo cancel feeOn-time62%
AviancaCheapest$202Average$460FlexibilityNo cancel feeOn-time71%
American AirlinesCheapest$304Average$568FlexibilityNo cancel feeOn-time71%

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