BOS - SCL

$331 Find Cheap Flights from Boston to Santiago

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Santiago departing on 8/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Santiago

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Santiago.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Santiago.
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Everything you should know

Cheapest round-trip
$655
Typical prices: $774-$561
LATAM Airlines
Wed 10/21Mon 10/26
BOS - SCL • 1 stop
Cheapest one-way
$331
Typical prices: $273-$432
Multiple Airlines
Mon 8/17
BOS - SCL • 2 stops
Top airlines
Cheapest • from $655 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boston and Santiago. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $825 (round-trip)
Shortest trip • 13h 52m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Santiago (BOS-SCL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Santiago that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Santiago

Wed, Oct 21 - Mon, Oct 26
LATAM Airlines Logo
9:55 am - 6:25 am
BOS
-
SCL
19h 30m
1 stop
LATAM Airlines Logo
11:05 pm - 2:41 pm
SCL
-
BOS
16h 36m
1 stop
$655LATAM Airlines
Mon, Sep 7 - Mon, Sep 21
Copa Airlines Logo
3:55 pm - 11:39 pm
BOS
-
SCL
30h 44m
1 stop
Copa Airlines Logo
5:14 am - 11:02 pm
SCL
-
BOS
18h 48m
1 stop
$660Copa Airlines
Tue, Aug 11 - Tue, Aug 25
Copa Airlines Logo
8:45 am - 2:20 am
BOS
-
SCL
17h 35m
1 stop
Copa Airlines Logo
2:14 am - 11:10 pm
SCL
-
BOS
20h 56m
1 stop
$661Copa Airlines
Mon, Aug 17 - Mon, Aug 31
LATAM Airlines Logo
5:05 pm - 6:25 am
BOS
-
SCL
13h 20m
1 stop
LATAM Airlines Logo
11:00 pm - 3:22 pm
SCL
-
BOS
16h 22m
1 stop
$664LATAM Airlines
Tue, Sep 1 - Mon, Sep 7
American Airlines Logo
5:18 pm - 6:25 am
BOS
-
SCL
13h 07m
1 stop
American Airlines Logo
9:50 pm - 12:58 am
SCL
-
BOS
28h 08m
1 stop
$665American Airlines
Thu, Jul 16 - Mon, Jul 27
LATAM Airlines Logo
5:05 pm - 6:25 am
BOS
-
SCL
13h 20m
1 stop
LATAM Airlines Logo
10:55 pm - 4:08 pm
SCL
-
BOS
17h 13m
1 stop
$666LATAM Airlines
Tue, Sep 1 - Mon, Sep 7
American Airlines Logo
12:02 pm - 6:25 am
BOS
-
SCL
18h 23m
2 stops
American Airlines Logo
9:50 pm - 12:58 am
SCL
-
BOS
28h 08m
1 stop
$670American Airlines
Thu, Aug 13 - Tue, Aug 18
LATAM Airlines Logo
1:34 pm - 6:25 am
BOS
-
SCL
16h 51m
1 stop
LATAM Airlines Logo
10:55 pm - 4:13 pm
SCL
-
BOS
17h 18m
1 stop
$671LATAM Airlines
Wed, Oct 21 - Mon, Oct 26
LATAM Airlines Logo
3:00 pm - 6:55 am
BOS
-
SCL
14h 55m
1 stop
LATAM Airlines Logo
10:55 pm - 1:47 pm
SCL
-
BOS
15h 52m
1 stop
$672LATAM Airlines
Sun, Sep 27 - Tue, Oct 6
Copa Airlines Logo
8:47 am - 11:39 pm
BOS
-
SCL
13h 52m
1 stop
Copa Airlines Logo
1:44 am - 11:02 pm
SCL
-
BOS
22h 18m
1 stop
$673Copa Airlines
Booking Insights

KAYAK's insights & trends for Boston to Santiago flights

Get data-powered insights and trends into flights from Boston to Santiago to help you find the cheapest flights, the best time to fly and much more.

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boston to Santiago departing in October.

What is the cheapest month to fly from Boston to Santiago?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Santiago, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Santiago is September, where tickets cost $637 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,006 and $944 respectively.

How far in advance should I book a flight from Boston to Santiago?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Santiago, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Santiago, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonJune
Cheapest flight$331
Best time to beat the crowds but there is an average 26% increase in price.
Most popular time to fly with an average 18% increase in price.
Flight from Boston to Santiago

When to book flights from Boston to Santiago

Are your dates flexible? Find out the best times to travel from Boston to Santiago based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Santiago

  • What type of seats will I find on flights from Boston to Santiago with Delta Airlines?

    Delta Airlines offers several classes of seats on flights from Boston to Santiago. Basic Economy is a budget-friendly option while Main Cabin is Delta's standard economy class that offers a comfortable seat with complimentary snacks, and entertainment. Delta Comfort Plus offers additional legroom and priority boarding while First Class provides a premium experience with spacious seats, personal service, complimentary meals and beverages, priority boarding, and dedicated overhead bin space.

  • Which airline offers flights from Boston to Santiago with less carbon emissions?

    LATAM Airlines offers flights from Boston to Santiago and has taken various steps to reduce its carbon emissions. The airline has adopted sustainable aviation fuel (SAF) in its operations and is replacing its older, less efficient aircraft with newer and more fuel-efficient planes. The airline has also implemented ways to optimize flight paths and minimize fuel burn during takeoff and landing.

  • Which are the common layovers for flights from Boston to Santiago?

    Travelers who prefer to use connecting flights from Boston (BOS) to Santiago (SCL) can expect layovers in different cities depending on the airline they choose. LATAM Airlines has layovers in Lima (LIM) or Sao Paulo (GRU) while Delta Airlines offers a common layover option in Atlanta (ATL). The layover time will also vary depending on the day of travel and the airline.

  • What services are offered to economy class passengers on Spirit Airlines flights from Boston to Santiago?

    Economy class seats on Spirit Airline flights from Boston to Santiago typically have 28 inches of seat pitch, with the option to purchase upgraded seats with more legroom, which they call "Big Front Seats." Additional fees will apply for optional services such as seat selection, baggage, and inflight entertainment. Passengers can also purchase food and drinks during their flight through Spirit's onboard menu.

  • What is the cheapest flight from Boston to Santiago?

    In the last 3 days, the lowest price for a flight from Boston to Santiago was $331 for a one-way ticket and $655 for a round-trip.

  • Do I need a passport to fly between Boston and Santiago?

    Yes

  • Which aircraft models fly most regularly from Boston to Santiago?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Santiago?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Boston and Santiago, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Santiago from Boston?

    Atlanta is the most popular layover city among KAYAK users traveling from Boston to Santiago.

  • Which is the best airline for flights from Boston to Santiago, Delta or Copa Airlines?

    The two airlines most popular with KAYAK users for flights from Boston to Santiago are Delta and Copa Airlines. With an average price for the route of $902 and an overall rating of 7.9, Delta is the most popular choice. Copa Airlines is also a great choice for the route, with an average price of $702 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Boston to Santiago?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Santiago.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Santiago?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Santiago from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Santiago?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Santiago with an airline and back to Boston with another airline. Booking your flights between Boston and SCL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Santiago?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Santiago from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Boston to Santiago

  • American Airlines allows passengers to check one bag for free, with a weight limit of 50 pounds and a size limit of 62 linear inches for flights from Boston to Santiago. Passengers are also allowed to bring one carry-on bag and one personal item on board. The carry-on bag must not exceed the size limit of 22 by 14 by 9 inches, including handles and wheels.
  • Avianca Airlines offers special assistance for passengers with reduced mobility on flights from Boston to Santiago. These services include wheelchair service, assistance with mobility or medical equipment, and other services to ensure the safe and comfortable travel of passengers with limited mobility.
  • Families traveling with infants from Boston to Santiago should consider flying with JetBlue Airways. The airline offers priority boarding, free checked strollers and car seats, and pre-boarding for families with small children. Additionally, JetBlue's Mint class offers lie-flat seats with a privacy door, making it easier for parents to travel with infants.
  • Passengers can access other nearby cities from Arturo Merino Benitez International Airport (SCL). These include Valparaiso, Vina del Mar, Rancagua, San Antonio, and Pichilemu. These cities are accessible by flights, rental car or public transport options at SCL.
  • Pet owners who book flights from Boston to Santiago with Copa Airlines should be aware that only small cats and dogs are permitted in the cabin. Pets can also be transported either as checked or carry-on baggage.

Reviews of the top 5 airlines serving from Boston to Santiago

 
See real verified KAYAK customer reviews for airlines flying from Boston to Santiago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Santiago? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8415 reviews
7.8Entertainment
7.2Food
8.1Boarding
7.8Comfort
8.5Crew
Airline reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

6.0 GoodAnonymous, May 2026
ATL - ECP
Read more Delta reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

The crew were efficient. The pilots seemed professional. It was a bit chilly in our seats. The sheet provided weren’t very helpful.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

Planes were clean, no water or snacks on either flight.

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Same as the previous flight as far as comfort and food. Entertainment didn’t have a watchable screen so everything would need to be watched on your own device in which they didn’t have a charging port that accommodated my iPhone. Seats were very uncomfortable. Staff was very friendly.

Boarding was a mess, they call all priority members without distinction so gold, platinum, silver were all mixed together in a long line which defeats the purpose

Avoid at all costs. My wife had to stay back on a connecting flight as her parents flight was delayed. 10 days later on the way back they cancelled all our flights. We had to rebook all four of us on the next days flight.

Do not book it’s a scam! They stole $1200 from me

Flight got delayed; had to go through security three times.

A lot things happened in this trip.The fly should be less stress.

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

The flight was good overall. Everything went smoothly, although the landing was a bit rough. Still, it was a pleasant experience

I always enjoy flying Copa. There are very few airlines where I can enjoy a comfortable sleep in-flight. The snacks weren't the best, but they sufficed. The in-flight entertainment was fantastic, and I crossed another movie off my watch list.

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

We liked the way we were treated by the sraff at lima airport counter and the the flight attendants. We did not like the fact that the kiosks at airport rebooted after we entered our information and then told us that there was an issueand we needed to go to the counter. Such a waste of time for a group of 6. Once we got our boarding passes there was no assigned gate so we did not know where to go.

Honestly first time flying with delta and it was pretty good. All the process very smooth and crew was always nice and attentive.

Deleted flight made me loose my connection flight now stuck in Atlanta for a day

Good check in process Poor information on payments at Lima airport

Apart of Sky miles delta. And they go everywhere in Brazil

Latam wouldn’t tell me how much checked luggage would until I was at the airport and they charged me the highest price possible. Besides that, it was okay.

There was a mechanical issue with the plane that they had to work on before we could take off. That's fine, by all means, PLEASE make sure the mechanics are functioning properly. What was a problem was the fact that we sat on the tarmac for 4.5 hours without moving, without letting us off the plane, and without climate control and air running through the plane. There was no explanation as to what was going on; they just kept promising that it would be "15 minutes, then we are on our way." At one point, they even switched the entire crew out and told everyone we just needed to wait for new employees to show up. Then, as the 4 hours were not moving, an hour before the full refund, they made a big show about "the flight starting and the doors are locked, so you have to sit down." We didn't move for another 40 minutes; they were just trying to skirt around legalities that entitled us to restitution. When the flight finally was underway, the plane was gigantic but cramped in design, my entertainment screen kept freezing and glitching, and subtitles didn't work, and the crew was passive-aggressive. Terrible flight.

We traveled with two young children, and it was not possible for our family to be seated together. No one offered help or assistance to organize seating so we could sit with our kids. In the end, we managed to find two seats in Economy so I could at least sit with one of them, even though I had originally paid for Comfort+. In summary, I had to downgrade my seat just to be able to sit with one of my children, which was very disappointing

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

The assistance we received and the flight itself was wonderful. We will fly with LATAM airlines again, in the future.

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

I felt scammed. The priced advertised was different than what I paid. I paid the whole some online. I then got a call 20 minutes later saying I need to paid 70 more person. She said the price online is not the guaranteed price.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Check in was chaotic with only one counter for business class and first class. The luggage conveyor belt at JFK airport was broken so the flight departure was delayed which made the flight stressful as I had a tight connection. Although the captain said they could make up the delay, they didn’t do so.

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

Lost of requested seat assignments. Lost my husband's meal choice

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

Movies on my phone are great. It would be nice to have a gluten free snack option.

It was what i expected. I like the movies you can access from your phone. It would be nice if there was a gluten free snack offered. But I did bring my own snack knowing there would not be a gluten free option

The flight was peaceful, just s slight turbulence, pilots and crews were all nice and made a great job! Arrived safely in the Philippines. Thank you ya’ll!

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

American Airlines II: Delay Boogaloo. Multiple gate changes, delays, boarded and then MORE delays. I hate to say this won’t matter, but posting stuff about major corporations in 2026 is a post-modern “scream into the void.” Was multiple hours late coming home, so there you go.

Awful, tons of delays, I got into Chicago multiple hours late meaning I hit the very traffic I tried so desperately to avoid. Just empty apologies from American Airlines text alerts. Trash behavior from a trash airline.

The flight attendants were very friendly, efficient, and helpful. The plane was ahead of schedule, and it all went very smoothly. Thank you.

They lost my baggage and I am still struggling to the information and update

We got delayed getting out of DFW for broken overhead bins. Once the flight got underway the captain kept the seatbelt sign lit the entire flight despite little perceptible turbulence, preventing use of the rest rooms and any sort of refreshment service in the main cabin.

Flight delays for communication overall not a good experience uncomfortable on the plane. Person in front of me reclined his seat, putting them inches from my lap.

Everything you need to know for your flight from Boston to Santiago

Information on your arrival and departure airports