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Cheap flights from Boston to Santiago de los Caballeros from $163

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 10/18. 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

JetBlue Logo
1:22 pm - 5:11 pmBOS-STI
3h 49mnonstop
JetBlue Logo
7:00 pm - 9:59 pmSTI-BOS
3h 59mnonstop
$358JetBlue
Find Deal
mié., oct. 29 - mar., nov. 4
JetBlue Logo
11:00 pm - 2:53 amBOS-STI
3h 53mnonstop
JetBlue Logo
6:00 am - 8:58 amSTI-BOS
3h 58mnonstop
$359JetBlue
Find Deal
sáb., nov. 1 - sáb., nov. 8
United Airlines Logo
1:38 pm - 11:51 pmBOS-STI
9h 13m1 stop
United Airlines Logo
12:52 pm - 11:41 pmSTI-BOS
11h 49m2 stops
$360United Airlines
Find Deal
mar., dic. 2 - lun., dic. 8
Delta Logo
1:10 pm - 11:54 pmBOS-STI
9h 44m1 stop
Delta Logo
6:35 am - 3:18 pmSTI-BOS
9h 43m1 stop
$363Delta
Find Deal
mar., ene. 13 - mié., ene. 28
United Airlines Logo
5:55 am - 3:12 pmBOS-STI
9h 17m2 stops
United Airlines Logo
6:00 am - 1:25 pmSTI-BOS
7h 25m1 stop
$367United Airlines
Find Deal
mié., oct. 8 - mié., oct. 15
Spirit Airlines Logo
8:24 pm - 10:38 amBOS-STI
14h 14m1 stop
Spirit Airlines Logo
11:43 am - 11:59 pmSTI-BOS
12h 16m1 stop
$368Spirit Airlines
Find Deal
vie., oct. 17 - dom., oct. 26
Spirit Airlines Logo
2:15 pm - 10:38 amBOS-STI
20h 23m2 stops
Spirit Airlines Logo
11:43 am - 11:59 pmSTI-BOS
12h 16m1 stop
$370Spirit Airlines
Find Deal
sáb., oct. 25 - sáb., nov. 1
American Airlines Logo
3:59 pm - 12:13 pmBOS-STI
20h 14m2 stops
American Airlines Logo
1:14 pm - 8:35 amSTI-BOS
19h 21m2 stops
$375American Airlines
Find Deal
sáb., oct. 11 - mar., oct. 14
American Airlines Logo
5:13 pm - 12:13 pmBOS-STI
19h 00m2 stops
American Airlines Logo
7:00 am - 9:15 pmSTI-BOS
15h 15m1 stop
$377American Airlines
Find Deal
mié., oct. 29 - vie., nov. 7
Delta Logo
1:10 pm - 11:54 pmBOS-STI
9h 44m1 stop
Delta Logo
7:41 pm - 7:24 amSTI-BOS
11h 43m1 stop
$389Delta
Find Deal
dom., mar. 1 - mar., mar. 17

JetBlue flights from Boston to Santiago de los Caballeros

Our best JetBlue deals on Boston to Santiago de los Caballeros flight tickets
JetBlue
Oct 29
BOS1:22 pmBoston Logan Intl
3h 49m
STI5:11 pmSantiago de los Caballeros
Nov 4
STI7:00 pmSantiago de los Caballeros
3h 59m
BOS9:59 pmBoston Logan Intl
$358
Find similar
JetBlue
Nov 1
BOS11:00 pmBoston Logan Intl
3h 53m
STI2:53 amSantiago de los Caballeros
Nov 8
STI6:00 amSantiago de los Caballeros
3h 58m
BOS8:58 amBoston Logan Intl
$359
Find similar
JetBlue
Oct 17
BOS7:06 pmBoston Logan Intl
7h 15m
1 stop
STI2:21 amSantiago de los Caballeros
Oct 24
STI12:19 pmSantiago de los Caballeros
4h 14m
BOS4:33 pmBoston Logan Intl
$365
Find similar

Delta flights from Boston to Santiago de los Caballeros

Our best Delta deals on Boston to Santiago de los Caballeros flight tickets
Delta
Jan 13
BOS1:10 pmBoston Logan Intl
9h 44m
1 stop
STI11:54 pmSantiago de los Caballeros
Jan 28
STI6:35 amSantiago de los Caballeros
9h 43m
1 stop
BOS3:18 pmBoston Logan Intl
$363
Find similar
Delta
Sep 23
BOS6:05 amBoston Logan Intl
13h 06m
1 stop
STI7:11 pmSantiago de los Caballeros
Sep 27
STI8:40 pmSantiago de los Caballeros
10h 38m
1 stop
BOS7:18 amBoston Logan Intl
$365
Find similar
Delta
Sep 20
BOS5:05 pmBoston Logan Intl
7h 29m
1 stop
STI12:34 amSantiago de los Caballeros
Oct 22
STI8:31 pmSantiago de los Caballeros
14h 38m
1 stop
BOS11:09 amBoston Logan Intl
$370
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 septiembre 17, 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

mié. 10/29

1:22 pm-5:11 pm

Nonstop3h 49m

Santiago de los Caballeros

mar. 11/4

7:00 pm-9:59 pm

Nonstop3h 59m

$358

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

sáb. 11/1

11:00 pm-2:53 am

Nonstop3h 53m

Santiago de los Caballeros

sáb. 11/8

6:00 am-8:58 am

Nonstop3h 58m

$359

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

mar. 12/2

1:38 pm-11:51 pm

1 stop9h 13m

Santiago de los Caballeros

lun. 12/8

12:52 pm-11:41 pm

2 stops11h 49m

$360

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

mar. 1/13

1:10 pm-11:54 pm

1 stop9h 44m

Santiago de los Caballeros

mié. 1/28

6:35 am-3:18 pm

1 stop9h 43m

$363

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

mié. 10/8

5:55 am-3:12 pm

2 stops9h 17m

Santiago de los Caballeros

mié. 10/15

6:00 am-1:25 pm

1 stop7h 25m

$367

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

vie. 10/17

8:24 pm-10:38 am

1 stop14h 14m

Santiago de los Caballeros

dom. 10/26

11:43 am-11:59 pm

1 stop12h 16m

$368

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

sáb. 10/25

2:15 pm-10:38 am

2 stops20h 23m

Santiago de los Caballeros

sáb. 11/1

11:43 am-11:59 pm

1 stop12h 16m

$370

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

sáb. 10/11

3:59 pm-12:13 pm

2 stops20h 14m

Santiago de los Caballeros

mar. 10/14

1:14 pm-8:35 am

2 stops19h 21m

$375

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

mié. 10/29

5:13 pm-12:13 pm

2 stops19h 00m

Santiago de los Caballeros

vie. 11/7

7:00 am-9:15 pm

1 stop15h 15m

$377

BostonSantiago de los Caballeros

BOS - STI

BOSSTI

Boston Logan Intl

dom. 3/1

1:10 pm-11:54 pm

1 stop9h 44m

Santiago de los Caballeros

mar. 3/17

7:41 pm-7:24 am

1 stop11h 43m

$389

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 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 $434, 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 Thursday when prices can be found for as low as $519. 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 $572.

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 in the afternoon. Our users have found flights to Santiago de los Caballeros in the afternoon for as low as $401. In the evening is when there is more demand to fly to Santiago de los Caballeros, so prices are often more expensive at around $530 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 $528 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 $459 on momondo.

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

There is only 1 cabin class 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.

Can stopping save me money on Boston to Santiago de los Caballeros flights?

You could potentially save up to 11% on your flight if you consider stops on a Boston to Santiago de los Caballeros flight.

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

As of September 2025, prices for Boston to Santiago de los Caballeros flights are approximately 5% 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

$179

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 $179. The best round-trip flight deal from Boston to Santiago de los Caballeros found on momondo in the last 72 hours is $435.
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 3h 49m, 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
5.8
3,173 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $347Free CancellationRating
6.3
8,023 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $364Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
DeltaPriceFrom $370Free CancellationRating
7.9
7,961 reviews
Search Delta flights
JetBluePriceFrom $374Free CancellationRating
7.2
2,914 reviews
Search JetBlue 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 4 flights/week on average for this route. A good JetBlue flight deal for Boston to Santiago de los Caballeros starts from $374 round-trip, up to an average price of $532. 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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