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$351+ Cheap flights from Boise (BOI) to San Salvador (SAL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — SAL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Boise to San Salvador

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) 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 September 11, 2025.

Round-trip from

$351
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$469
From Boise Air Term. Gowen Fld to San Salvador El Salvador Intl
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($194 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($56 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Boise to San Salvador

Cheapest flights from Boise to San Salvador
Explore the most affordable flight options available from Boise to San Salvador. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Trip.com deal was found by Cheapflights users on 9/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:58 pmBOI - SAL
1 stop10h 17mMultiple Airlines
Mon 11/176:15 pmSAL - BOI
1 stop29h 47mMultiple Airlines
Deal found 9/9$351
This Travelocity deal was found by Cheapflights users on 9/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/208:26 pmBOI - SAL
1 stop9h 24mMultiple Airlines
Mon 10/276:15 pmSAL - BOI
1 stop19h 25mMultiple Airlines
Deal found 9/9$388
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/182:12 pmBOI - SAL
1 stop14h 38mUnited Airlines
Wed 10/292:00 amSAL - BOI
1 stop11h 30mUnited Airlines
Deal found 9/9$530
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/202:12 pmBOI - SAL
1 stop14h 38mUnited Airlines
Mon 10/273:40 pmSAL - BOI
2 stops27h 14mUnited Airlines
Deal found 9/9$534
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/198:05 amBOI - SAL
2 stops13h 00mMultiple Airlines
Tue 10/288:00 amSAL - BOI
2 stops15h 59mMultiple Airlines
Deal found 9/9$540
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/198:05 amBOI - SAL
2 stops13h 00mMultiple Airlines
Fri 10/2412:05 pmSAL - BOI
2 stops11h 52mMultiple Airlines
Deal found 9/9$542
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/131:25 pmBOI - SAL
1 stop23h 02mAmerican Airlines
Mon 11/173:31 pmSAL - BOI
2 stops22h 35mAmerican Airlines
Deal found 9/10$546
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/232:12 pmBOI - SAL
2 stops30h 05mUnited Airlines
Thu 10/305:55 amSAL - BOI
2 stops15h 26mUnited Airlines
Deal found 9/9$554
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/182:12 pmBOI - SAL
1 stop14h 38mUnited Airlines
Sat 10/252:00 amSAL - BOI
1 stop11h 30mUnited Airlines
Deal found 9/9$560
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/28:20 pmBOI - SAL
1 stop23h 45mMultiple Airlines
Wed 12/1012:05 pmSAL - BOI
2 stops12h 50mMultiple Airlines
Deal found 9/10$563

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise 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 September 11, 2025.
Use the filters below to find and compare flights from Boise to San Salvador that are best for you.

Fly from

Boise

Fly to

San Salvador

Route

Depart

Return

Price

BoiseSan Salvador

BOI - SAL

BOISAL

Boise Air Term. Gowen Fld

Tue 12/2

8:20 pm-7:50 pm

1 stop22h 30m

San Salvador El Salvador Intl

Wed 12/10

9:10 am-11:05 pm

1 stop14h 55m

$351

BoiseSan Salvador

BOI - SAL

BOISAL

Boise Air Term. Gowen Fld

Thu 11/13

6:58 pm-6:15 am

1 stop10h 17m

San Salvador El Salvador Intl

Mon 11/17

12:05 pm-11:59 pm

2 stops12h 54m

$360

BoiseSan Salvador

BOI - SAL

BOISAL

Boise Air Term. Gowen Fld

Tue 10/21

2:12 pm-4:50 am

1 stop14h 38m

San Salvador El Salvador Intl

Wed 10/29

2:00 am-1:30 pm

1 stop11h 30m

$530

BoiseSan Salvador

BOI - SAL

BOISAL

Boise Air Term. Gowen Fld

Mon 10/20

2:12 pm-4:50 am

1 stop14h 38m

San Salvador El Salvador Intl

Fri 10/24

2:00 am-1:30 pm

1 stop11h 30m

$530

BoiseSan Salvador

BOI - SAL

BOISAL

Boise Air Term. Gowen Fld

Wed 10/22

2:12 pm-4:50 am

1 stop14h 38m

San Salvador El Salvador Intl

Wed 10/29

2:00 am-1:30 pm

1 stop11h 30m

$530

BoiseSan Salvador

BOI - SAL

BOISAL

Boise Air Term. Gowen Fld

Tue 10/21

2:12 pm-4:50 am

1 stop14h 38m

San Salvador El Salvador Intl

Tue 10/28

2:00 am-1:30 pm

1 stop11h 30m

$530

BoiseSan Salvador

BOI - SAL

BOISAL

Boise Air Term. Gowen Fld

Wed 10/22

2:12 pm-4:50 am

1 stop14h 38m

San Salvador El Salvador Intl

Wed 10/29

5:55 am-11:28 pm

2 stops17h 33m

$534

BoiseSan Salvador

BOI - SAL

BOISAL

Boise Air Term. Gowen Fld

Mon 3/9

8:05 am-8:19 pm

2 stops12h 14m

San Salvador El Salvador Intl

Wed 3/11

5:55 am-10:22 pm

2 stops16h 27m

$534

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from Boise to San Salvador

Have a flexible travel schedule? Discover the best time to fly to San Salvador from Boise 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 Boise to San Salvador

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

Find hourly flight availability from Boise 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 September 11, 2025.

A simple way to save on the total cost of your ticket is to fly from Boise to San Salvador in the evening. If you’re flexible enough to do this you can expect to save up to 32% on your trip compared to booking a flight in the afternoon.

How much does it cost to fly round-trip from Boise 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 September 11, 2025.
Read through reviews of airlines operating flights from Boise to San Salvador, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Boise 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 long is the flight from Boise to San Salvador?

    Departing from Boise to San Salvador will take you 14h 38m. The distance from Boise to San Salvador is about 2629 mi.

  • What is the cheapest airline to fly from Boise to San Salvador round-trip?

    Currently priced at $479, United Airlines will fly you from Boise to San Salvador and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. You may be able to fly from Boise to San Salvador for 24% less than the average price by searching for this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boise 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 Boise to San Salvador?

    Currently, September is the cheapest month in which you can book a flight from Boise to San Salvador (average of $260). Flying from Boise to San Salvador in December is currently the most expensive (average of $588). 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
Sonsonate
El Cuco
La Libertad
Acajutla

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to San Salvador by adding a car rental and/or hotel reservation to your travel itinerary.
San Salvador car rentals
San Salvador El Salvador Intl Airport car rentals

Top airline flying from Boise to San Salvador

Discover the top airline that operate flights from Boise 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$479Average$594FlexibilityNo cancel feeOn-time69%

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