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Cheap flights from Boston to Santiago de los Caballeros from $124

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Santiago de los Caballeros departing on 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Boston to Santiago de los Caballeros

Cheap round-trip flights

Spirit Airlines Logo
6:55 pm - 9:15 amBOS-STI
14h 20m1 stop
Spirit Airlines Logo
10:20 am - 11:49 pmSTI-BOS
13h 29m1 stop
$293Spirit Airlines
Find Deal
Tue, Aug 19 - Thu, Aug 28
Spirit Airlines Logo
6:55 pm - 9:15 amBOS-STI
14h 20m1 stop
Spirit Airlines Logo
10:20 am - 11:49 pmSTI-BOS
13h 29m1 stop
$297Spirit Airlines
Find Deal
Tue, Aug 19 - Wed, Aug 27
Spirit Airlines Logo
6:55 pm - 9:15 amBOS-STI
14h 20m1 stop
Spirit Airlines Logo
10:20 am - 11:49 pmSTI-BOS
13h 29m1 stop
$298Spirit Airlines
Find Deal
Tue, Aug 26 - Sat, Aug 30
Spirit Airlines Logo
6:55 pm - 9:15 amBOS-STI
14h 20m1 stop
Spirit Airlines Logo
12:10 pm - 11:57 pmSTI-BOS
11h 47m1 stop
$301Spirit Airlines
Find Deal
Sat, Aug 30 - Sat, Sep 6
Spirit Airlines Logo
6:55 pm - 9:15 amBOS-STI
14h 20m1 stop
Spirit Airlines Logo
12:10 pm - 11:57 pmSTI-BOS
11h 47m1 stop
$310Spirit Airlines
Find Deal
Wed, Aug 27 - Sat, Sep 13
Spirit Airlines Logo
5:45 am - 5:06 pmBOS-STI
10h 21m1 stop
Spirit Airlines Logo
6:18 pm - 12:40 amSTI-BOS
7h 22m1 stop
$313Spirit Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
Delta Logo
6:00 am - 12:03 pmBOS-STI
6h 03m1 stop
Delta Logo
6:00 am - 10:27 pmSTI-BOS
16h 27m1 stop
$371Delta
Find Deal
Fri, Oct 10 - Mon, Oct 13
American Airlines Logo
7:25 pm - 12:27 pmBOS-STI
17h 02m2 stops
American Airlines Logo
1:29 pm - 8:38 amSTI-BOS
19h 09m2 stops
$372American Airlines
Find Deal
Tue, Sep 23 - Sat, Oct 4
American Airlines Logo
5:10 pm - 12:27 pmBOS-STI
19h 17m2 stops
American Airlines Logo
1:29 pm - 10:12 amSTI-BOS
20h 43m2 stops
$373American Airlines
Find Deal
Tue, Sep 23 - Sat, Oct 4
American Airlines Logo
5:43 pm - 12:27 pmBOS-STI
18h 44m2 stops
American Airlines Logo
1:29 pm - 7:39 amSTI-BOS
18h 10m2 stops
$375American Airlines
Find Deal
Wed, Sep 24 - Mon, Sep 29

American Airlines flights from Boston to Santiago de los Caballeros

Our best American Airlines deals on Boston to Santiago de los Caballeros flight tickets
American Airlines
Sep 23
BOS7:25 pmBoston Logan Intl
17h 02m
2 stops
STI12:27 pmSantiago de los Caballeros
Oct 4
STI1:29 pmSantiago de los Caballeros
19h 09m
2 stops
BOS8:38 amBoston Logan Intl
$372
Find similar
American Airlines
Sep 23
BOS5:10 pmBoston Logan Intl
19h 17m
2 stops
STI12:27 pmSantiago de los Caballeros
Oct 4
STI1:29 pmSantiago de los Caballeros
20h 43m
2 stops
BOS10:12 amBoston Logan Intl
$373
Find similar
American Airlines
Sep 24
BOS5:43 pmBoston Logan Intl
18h 44m
2 stops
STI12:27 pmSantiago de los Caballeros
Sep 29
STI1:29 pmSantiago de los Caballeros
18h 10m
2 stops
BOS7:39 amBoston Logan Intl
$375
Find similar

Spirit Airlines flights from Boston to Santiago de los Caballeros

Our best Spirit Airlines deals on Boston to Santiago de los Caballeros flight tickets
Spirit Airlines
Aug 19
BOS6:55 pmBoston Logan Intl
14h 20m
1 stop
STI9:15 amSantiago de los Caballeros
Aug 28
STI10:20 amSantiago de los Caballeros
13h 29m
1 stop
BOS11:49 pmBoston Logan Intl
$293
Find similar
Spirit Airlines
Aug 19
BOS6:55 pmBoston Logan Intl
14h 20m
1 stop
STI9:15 amSantiago de los Caballeros
Aug 27
STI10:20 amSantiago de los Caballeros
13h 29m
1 stop
BOS11:49 pmBoston Logan Intl
$297
Find similar
Spirit Airlines
Aug 26
BOS6:55 pmBoston Logan Intl
14h 20m
1 stop
STI9:15 amSantiago de los Caballeros
Aug 30
STI10:20 amSantiago de los Caballeros
13h 29m
1 stop
BOS11:49 pmBoston Logan Intl
$298
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Santiago de los Caballeros 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, momondo users made 832,500 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Boston to Santiago de los Caballeros that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

Tue 8/19

6:55 pm-9:15 am

1 stop14h 20m

Santiago de los Caballeros

Thu 8/28

10:20 am-11:49 pm

1 stop13h 29m

$293

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

Tue 8/19

6:55 pm-9:15 am

1 stop14h 20m

Santiago de los Caballeros

Wed 8/27

10:20 am-11:49 pm

1 stop13h 29m

$297

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

Tue 8/26

6:55 pm-9:15 am

1 stop14h 20m

Santiago de los Caballeros

Sat 8/30

10:20 am-11:49 pm

1 stop13h 29m

$298

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

Sat 8/30

6:55 pm-9:15 am

1 stop14h 20m

Santiago de los Caballeros

Sat 9/6

12:10 pm-11:57 pm

1 stop11h 47m

$301

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

Wed 8/27

6:55 pm-9:15 am

1 stop14h 20m

Santiago de los Caballeros

Sat 9/13

12:10 pm-11:57 pm

1 stop11h 47m

$310

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

Sat 11/15

5:45 am-5:06 pm

1 stop10h 21m

Santiago de los Caballeros

Tue 11/18

6:18 pm-12:40 am

1 stop7h 22m

$313

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

Fri 10/10

6:00 am-12:03 pm

1 stop6h 03m

Santiago de los Caballeros

Mon 10/13

6:00 am-10:27 pm

1 stop16h 27m

$371

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

Tue 9/23

7:25 pm-12:27 pm

2 stops17h 02m

Santiago de los Caballeros

Sat 10/4

1:29 pm-8:38 am

2 stops19h 09m

$372

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

Tue 9/23

5:10 pm-12:27 pm

2 stops19h 17m

Santiago de los Caballeros

Sat 10/4

1:29 pm-10:12 am

2 stops20h 43m

$373

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

Wed 9/24

5:43 pm-12:27 pm

2 stops18h 44m

Santiago de los Caballeros

Mon 9/29

1:29 pm-7:39 am

2 stops18h 10m

$375

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Santiago de los Caballeros from

How to get the cheapest flight ticket from Boston to Santiago de los Caballeros

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Boston and Santiago de los Caballeros?

What is the cheapest month to fly to Santiago de los Caballeros?

The cheapest month to fly to Santiago de los Caballeros from Boston is in January. Flight prices, which tend to average around $433, are often lower during this time because this is during the off-season. If you aren’t able to travel to Santiago de los Caballeros during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $439.

What is the cheapest day to depart on your flight to Santiago de los Caballeros?

The cheapest day to depart from Boston to Santiago de los Caballeros is on a Sunday when prices can be found for as low as $512. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Boston to Santiago de los Caballeros for around $566.

What is the cheapest time of day to depart on your flight to Santiago de los Caballeros?

Our data shows that the cheapest Boston to Santiago de los Caballeros flights are usually those with departure times at noon. Our users have found flights to Santiago de los Caballeros at noon for as low as $519. In the morning is when there is more demand to fly to Santiago de los Caballeros, so prices are often more expensive at around $532 per ticket.

What is the cheapest Boston Logan Intl to Santiago de los Caballeros flight route?

Fly from Boston Logan Intl to Santiago de los Caballeros for the best Boston Logan Intl - Santiago de los Caballeros flight prices

How far in advance should I book a flight to Santiago de los Caballeros?

You are more likely to see cheaper flights to Santiago de los Caballeros from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Santiago de los Caballeros for around $526 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Santiago de los Caballeros from Boston for as low as $461 on momondo.

What cabin class options are available on Boston Logan Intl to Santiago de los Caballeros flights?

There are 1 cabin classes available to choose from on Boston Logan Intl to Santiago de los Caballeros flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Boston to Santiago de los Caballeros flight prices changed over time?

As of July 2025, prices for Boston to Santiago de los Caballeros flights are approximately 17% more expensive when compared to flights at the same time last year.

When to book flights from Boston to Santiago de los Caballeros

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Santiago de los Caballeros according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Santiago de los Caballeros (BOS to STI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Santiago de los Caballeros

Best Price Found

$124

Fastest flight time

3h 49m

Direct flights

Every day

Airports in Santiago de los Caballeros

1 airport
The best one-way flight to Santiago de los Caballeros from Boston in the past 72 hours is $124. The best round-trip flight deal from Boston to Santiago de los Caballeros found on momondo in the last 72 hours is $293.
The fastest flight from Boston to Santiago de los Caballeros takes 3h 49m
Direct flights go from Boston to Santiago de los Caballeros every day.
There is 1 airport near Santiago de los Caballeros: Santiago de los Caballeros (STI)
Search flight deals

  • How far is Boston Logan Intl to Santiago de los Caballeros by plane?

    There are 1581.9 mi between Boston Logan Intl and Santiago de los Caballeros. Flights usually cover this in 6h 03m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Santiago de los Caballeros Airport?

    Prices for flights from Boston Logan Intl Airport to Santiago de los Caballeros Airport were last updated today.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Santiago de los Caballeros Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Santiago de los Caballeros Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Santiago de los Caballeros Airport.

  • What documentation or ID do you need to fly to Santiago de los Caballeros Airport?

    The travel and health documents you'll need for your trip to Santiago de los Caballeros Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Santiago de los Caballeros Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Boston to Santiago de los Caballeros?

  • What is the most popular airline from Boston to Santiago de los Caballeros?

Best airlines flying from Boston to Santiago de los Caballeros

Compare and see reviews for airlines that fly from Boston to Santiago de los Caballeros with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $92Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
United AirlinesPriceFrom $320Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $349Free CancellationRating
6.3
8,048 reviews
Search Spirit Airlines flights
JetBluePriceFrom $376Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
DeltaPriceFrom $380Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $397Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • JetBlue Flights From Boston to Santiago de los Caballeros

    JetBlue is one of the most popular airlines flying from Boston to Santiago de los Caballeros, operating 14 flights/week on average for this route. A good JetBlue flight deal for Boston to Santiago de los Caballeros starts from $376 round-trip, up to an average price of $531. Our users have rated JetBlue at 7.2/10.

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Santiago de los Caballeros?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Santiago de los Caballeros from Boston.

Can I find flights from Boston to Santiago de los Caballeros with flexible booking policies on momondo?

momondo does allow users to show only those flights to Santiago de los Caballeros from Boston which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Boston to Santiago de los Caballeros?

momondo provides multiple filters to help you find the best flight to Santiago de los Caballeros from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Boston to Santiago de los Caballeros right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Boston to Santiago de los Caballeros now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Santiago de los Caballeros and let you know when they change.

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