BOS - SAL

$340 Find Cheap Flights from Boston to San Salvador - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$571
Typical prices: $433-$699
American Airlines
Sun 2/25Sun 3/18
BOS - SAL • 1 stop
Cheapest non-stop
$613
Typical prices: $396-$688
Avianca
Thu 10/25Thu 11/1
BOS - SAL • Non-stop
Nonstop flights
You can fly direct with Avianca. Average duration is 5h 32m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 86% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 21 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $504 (round-trip)
Shortest trip • 8h 32m (one-way)
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Salvador!
Flight Deals
Booking Insights
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to San Salvador

Thu, Feb 25 - Thu, Mar 18
American Airlines Logo
5:00 am - 12:39 pmBOS  Boston Logan Intl-SAL San Salvador El Salvador Intl
8h 39m1 stop Miami
American Airlines Logo
2:47 pm - 10:02 amSAL  San Salvador El Salvador Intl-BOS Boston Logan Intl
17h 15m1 stop Miami
$571American Airlines
Thu, Feb 18 - Wed, Feb 24
American Airlines Logo
7:00 am - 2:48 pmBOS  Boston Logan Intl-SAL San Salvador El Salvador Intl
8h 48m1 stop Miami
American Airlines Logo
4:00 pm - 10:00 amSAL  San Salvador El Salvador Intl-BOS Boston Logan Intl
17h 00m1 stop Miami
$571American Airlines
Thu, Jan 21 - Mon, Feb 8
United Airlines Logo
9:27 am - 9:19 pmBOS  Boston Logan Intl-SAL San Salvador El Salvador Intl
12h 52m1 stop Houston George Bush Intcntl
United Airlines Logo
11:54 pm - 5:24 pmSAL  San Salvador El Salvador Intl-BOS Boston Logan Intl
16h 30m1 stop Newark
$571United Airlines
Thu, Feb 4 - Mon, Feb 8
United Airlines Logo
7:08 am - 9:19 pmBOS  Boston Logan Intl-SAL San Salvador El Salvador Intl
15h 11m1 stop Houston George Bush Intcntl
United Airlines Logo
11:54 pm - 6:23 pmSAL  San Salvador El Salvador Intl-BOS Boston Logan Intl
17h 29m1 stop Newark
$571United Airlines
Mon, Jan 25 - Wed, Feb 3
Delta Logo
5:45 am - 1:10 pmBOS  Boston Logan Intl-SAL San Salvador El Salvador Intl
8h 25m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:35 pm - 12:58 amSAL  San Salvador El Salvador Intl-BOS Boston Logan Intl
9h 23m1 stop Atlanta Hartsfield-Jackson
$571Delta
Tue, Mar 9 - Tue, Mar 23
Delta Logo
8:15 pm - 1:35 pmBOS  Boston Logan Intl-SAL San Salvador El Salvador Intl
18h 20m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:00 pm - 12:58 amSAL  San Salvador El Salvador Intl-BOS Boston Logan Intl
8h 58m1 stop Atlanta Hartsfield-Jackson
$610Delta
Sun, Oct 25 - Sun, Nov 1
Avianca Logo
4:40 pm - 8:15 pmBOS  Boston Logan Intl-SAL San Salvador El Salvador Intl
5h 35mnonstop
Avianca Logo
7:45 am - 1:45 pmSAL  San Salvador El Salvador Intl-BOS Boston Logan Intl
5h 00mnonstop
$613Avianca
Mon, Dec 7 - Mon, Dec 21
Avianca Logo
3:40 pm - 8:15 pmBOS  Boston Logan Intl-SAL San Salvador El Salvador Intl
5h 35mnonstop
Avianca Logo
7:45 am - 1:45 pmSAL  San Salvador El Salvador Intl-BOS Boston Logan Intl
5h 00mnonstop
$614Avianca
Fri, Oct 16 - Sat, Oct 24
Frontier Logo
12:57 pm - 12:16 pmBOS  Boston Logan Intl-SAL San Salvador El Salvador Intl
25h 19m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
1:31 pm - 12:02 pmSAL  San Salvador El Salvador Intl-BOS Boston Logan Intl
20h 31m1 stop Atlanta Hartsfield-Jackson
$617Frontier
Fri, Oct 9 - Sat, Oct 17
Frontier Logo
12:57 pm - 12:16 pmBOS  Boston Logan Intl-SAL San Salvador El Salvador Intl
25h 19m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
1:31 pm - 12:02 pmSAL  San Salvador El Salvador Intl-BOS Boston Logan Intl
20h 31m1 stop Atlanta Hartsfield-Jackson
$800Frontier
Booking Insights

Price, demand and travel trends for Boston to San Salvador flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Boston to San Salvador?

Round-trip flights from Boston to San Salvador typically range from $433 to $699. The lowest price found in the past 5 days was $571, on American Airlines.

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

Based on deals KAYAK users found in the last 12 months, Sunday is the cheapest day of the week to fly from Boston to San Salvador. It’s 5% cheaper than the average day, while Tuesday is the most expensive, with prices 4% higher.

What’s the cheapest month to fly from Boston to San Salvador?

•January is the cheapest month to fly from Boston to San Salvador at $434 round-trip.
•December ($806) and July ($648) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 85% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Boston to San Salvador the cheapest?

Flights from Boston to San Salvador are cheapest 21 weeks before departure. Booking in this window typically costs about 25% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for Boston to San Salvador flights

Low season

September

Cheapest flight

$336
Beat the crowds with an average 37% drop in travelers.
One-way 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

Your Boston to San Salvador flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Boston to San Salvador?

    These are the earliest and latest flight times available from Boston to San Salvador:

    • Earliest: departs at 3:40 pm and lands at 9:12 pm
    • Latest: departs at 4:50 pm and lands at 10:22 pm.

    The flight takes about 5h 32m.

  • What cabin classes can I book on flights from Boston to San Salvador?

    Three cabin classes are available on flights from Boston to San Salvador:

    • Economy Class
    • Business Class
    • First Class

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

    A nonstop flight from Boston to San Salvador takes 5h 32m, covering 2,269 miles.

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

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Boston to San Salvador flight?

    Round-trip flights from Boston to San Salvador range from $433 to $699, with an average of $562 over the past 12 months. Anything below $433 counts as a good deal.

  • How expensive are last-minute Boston to San Salvador flights?

    Last-minute fares on this route (booked within two weeks of departure) run 5% above the $562 route average. Book 21 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Boston to San Salvador?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $504 round-trip via Fort Lauderdale (FLL), compared to $559 for nonstop.

  • What is the standard checked-bag allowance on flights from Boston to San Salvador?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $74–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Boston to San Salvador?

    The Airbus A320neo family is used most often on this route, operated mainly by Avianca. Other aircraft seen on the route include Airbus A320-100/200 variants.

  • How are flight departures from Boston to San Salvador spread across the day?

    Afternoon is the busiest departure period on Boston to San Salvador flights, with 100% of flights leaving in that window. Morning departures account for 0%, evening flights for 0%, and night flights for 0%.

  • Have flight prices from Boston to San Salvador changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $571 to $3,329. That means the highest observed fare was about 6x higher than the lowest one.

  • How are flight prices from Boston to San Salvador looking right now?

    One-way fares from Boston to San Salvador are currently higher than usual. Average one-way flight prices are about $371, which is 22% above the typical average for this route.

  • What car rental options are available at San Salvador El Salvador Intl Airport (SAL)?

    San Salvador El Salvador Intl Airport (SAL) hosts 5 major car rental companies, with daily rates starting from around $8 for economy cars. Top options include:

    • Budget
    • Europcar
    • Hertz
    • Sixt
    • Avis

  • Which airports can I use when flying from Boston to San Salvador?

    Flights from Boston to San Salvador usually depart from Boston Logan Intl (BOS) and arrive at San Salvador El Salvador Intl (SAL).

  • What time of day has the fewest delays on flights from Boston to San Salvador?

    Afternoon flights have the fewest delays on this route, while morning departures tend to have the most.

  • At what point is a flight considered delayed from Boston to San Salvador?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Boston to San Salvador route, 16% of flights were delayed in the past 3 months, with delays averaging 2h 11m.

  • Which airports do connecting flights from Boston to San Salvador pass through?

    One-stop flights from Boston to San Salvador most commonly connect through:

    • Miami (MIA) - 38% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 28% of one-stop connections
    • Panama City Tocumen Intl (PTY) - 18% of one-stop connections
    • Houston George Bush Intcntl (IAH) - 6% of one-stop connections

  • Can I save money by using flexible dates for flights from Boston to San Salvador?

    Yes. Flexible dates can save you up to 9% on flights from Boston to San Salvador. Sunday is the cheapest departure day at $536 round-trip on average, while Tuesday is the most expensive at $588, a difference of $52.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What airlines fly from Boston to San Salvador?

    Only Avianca operates flights between Boston and San Salvador.

  • How much time can I save by choosing a different layover airport from Boston to San Salvador?

    Flying via Washington, D.C. Dulles Intl (IAD) gives the shortest average 1-stop total travel time at 8h 32m, compared with 8h 37m via Cancun (CUN) and 8h 38m via Miami (MIA).

  • What is the time difference between Boston and San Salvador?

    San Salvador is 2 hours behind Boston (Central Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which airlines offer extra legroom and free seat selection on Boston to San Salvador flights?

    Among airlines operating Boston to San Salvador flights:

    • Avianca: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Boston to San Salvador flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Avianca: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Your guide to booking Boston to San Salvador flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Sunday departure and avoid flying on Tuesday. On this route, Sunday flights average $536, about $52 less than Tuesday fares (9% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 21 weeks before you fly. On this route, that window historically saves about 25% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Boston to San Salvador trip for January. Fares historically average $434 round-trip in that month - typically $372 less than the most expensive month, which is December (based on the last 12 months).
  • For the best chance of arriving on time, fly with Avianca. Over the past three months, 86% of Avianca flights from Boston to San Salvador arrived on time, slightly above the route average of 84%. When flights on this route arrive late, they're delayed by an average of 2h 11m, so choosing an airline with strong on-time performance can make a difference if you're on a tight schedule.
  • If you have the time, taking a 1-stop flight through Fort Lauderdale Airport (FLL) can be cheaper than flying direct. The cheapest layover option averages $504 round-trip on this route - about $55 less than direct flights (based on the last 12 months).

Prefer to fly direct from Boston to San Salvador?

 
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

More options for your flight from Boston to San Salvador

Complete your trip to San Salvador with a hotel stay or car rental