BOS - SCL

$256 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 5/18. 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.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$544
Overall average: $821
Delta
Wed 1/21Mon 2/23
BOS - SCL • 2 stops
Cheapest one-way
$256
Typical prices: $368-$541
Avianca
Mon 5/18
BOS - SCL • 2 stops
When to travel
September
Cheapest • 20% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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 Santiago!
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, Jan 21 - Mon, Feb 23
Delta Logo
10:05 am - 5:50 amBOS-SCL
17h 45m2 stops
Delta Logo
11:25 pm - 2:55 pmSCL-BOS
17h 30m1 stop
$544Delta
Find Deal
Sat, Dec 6 - Wed, Dec 10
United Airlines Logo
11:53 am - 8:50 amBOS-SCL
18h 57m2 stops
United Airlines Logo
10:45 pm - 2:29 pmSCL-BOS
17h 44m2 stops
$549United Airlines
Find Deal
Sat, Feb 21 - Fri, Mar 6
Delta Logo
8:04 pm - 7:40 amBOS-SCL
33h 36m1 stop
Delta Logo
11:30 pm - 11:12 amSCL-BOS
13h 42m1 stop
$552Delta
Find Deal
Wed, Feb 4 - Wed, Apr 1
Multiple Airlines Logo
5:25 pm - 5:30 pmBOS-SCL
22h 05m2 stops
Multiple Airlines Logo
7:10 am - 7:15 amSCL-BOS
25h 05m1 stop
$562Multiple Airlines
Find Deal
Sun, Dec 28 - Tue, Jan 20
LATAM Airlines Logo
7:54 pm - 9:35 pmBOS-SCL
23h 41m2 stops
LATAM Airlines Logo
9:30 pm - 10:02 amSCL-BOS
14h 32m1 stop
$564LATAM Airlines
Find Deal
Wed, Jan 21 - Mon, Jan 26
United Airlines Logo
10:30 am - 8:50 amBOS-SCL
20h 20m2 stops
United Airlines Logo
10:45 pm - 6:32 pmSCL-BOS
21h 47m3 stops
$569United Airlines
Find Deal
Wed, Jan 21 - Sun, Jan 25
Copa Airlines Logo
7:31 am - 6:00 amBOS-SCL
20h 29m1 stop
Copa Airlines Logo
3:34 am - 10:03 pmSCL-BOS
20h 29m1 stop
$572Copa Airlines
Find Deal
Wed, Mar 4 - Sat, Mar 14
LATAM Airlines Logo
3:50 pm - 5:55 pmBOS-SCL
24h 05m2 stops
LATAM Airlines Logo
8:25 am - 10:20 amSCL-BOS
26h 55m2 stops
$577LATAM Airlines
Find Deal
Thu, Feb 19 - Wed, Mar 4
Multiple Airlines Logo
5:35 am - 6:55 amBOS-SCL
23h 20m2 stops
Multiple Airlines Logo
4:25 pm - 6:35 amSCL-BOS
16h 10m1 stop
$587Multiple Airlines
Find Deal
Fri, Jan 9 - Sat, Jan 17
LATAM Airlines Logo
1:30 pm - 6:10 amBOS-SCL
14h 40m1 stop
LATAM Airlines Logo
10:35 am - 7:24 amSCL-BOS
46h 49m2 stops
$588LATAM Airlines
Find Deal
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.

What’s the cheapest day of the week to fly from Boston to Santiago?

The average price of all round-trip flights from Boston to Santiago clicked on KAYAK for each day over the last 12 months.

When flying from Boston to Santiago, you should consider leaving on a Sunday and avoid Saturdays if you are looking for the best rates. For your return to Boston, you’ll find the best rates on Thursdays and the most expensive ones on Fridays.

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 $688 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $1,020 and $967 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 19 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$256
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 12% 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 $270 for a one-way ticket and $544 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?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Boston and Santiago, with oneworld 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 $940 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 $891 and an overall rating of 7.6.

  • 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 7999 reviews
7.9Entertainment
7.9Comfort
8.5Crew
7.3Food
8.1Boarding
Airline reviews

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

2.0 MediocreAnonymous, Nov 2025ATL - TPA
Read more Delta reviews

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

This flight was straightforward and without difficulty. Service was OK, but I continue to be underwhelmed by level of attention given to Sky Priority passengers.

It would’ve been nice for all that money to have a more substantial snack for free. I remember once upon a time getting a very nice turkey sandwich with Swiss cheese on whole wheat bread for no charge along with a drink. I guess those days are gone. it’s a little insulting being given a cookie or a bag of baked chips Going forward I’ll just bring my own.

Great. Seamless. Check in agent at kiosk international was amazing and extremely helpful.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

Plenty of leg room, temperature was great and staff was excellent. Would do it more often.

The ticket agents in West Palm Beach on Friday afternoon Nov. 7th were incredible in getting us on an earlier plane to Atlanta during the government shutdown. Had the taken our original flight we would have missed our connection. She did this on her own, We didn't even have to ask, and she did it all with a smile and showing genuine concern that we would be taken care of. We are very grateful and thankful. We fly often, and now we will be sure to fly Delta.

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

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

Some of the Air hostesses are not that friendly. Need improvement

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

They were super friendly bumped me up to exit row free of charge, All flight legs were on time

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

As always, Copa Airlines is great to fly on. The flights are always on time, the staff are pleasant and helpful and it's always a wonderful flying experience.

We had a great flight just wished they had a tv so we can see a movie that would of made my trip excellent.

I selected first class expecting excetional service. It was mediocre at best. The food service was cold, meal choices was poor and on one leg they did provide dessert. I did enjoy the lay day seat but the movies were old and nothing current. Boarding the plane is always hot. So boarding is quite warm until your in the air. I took a small personal air fan. Update the meals and movies.

Very happy with my flight. I would definitely recommend it.

Good flight, boarding ok and crew very nice. Flight was not full so I was able to be very comfortable. Blanket and pillow provided with was good as it was very cold during the flight . Food was very good(small snack sandwich and an excellent piece of orange cake). Overall good flight, no complaints.

Wish the seats were a little more comfortable.. it was a 6 hrs nonstop trip. But the crew was courteous and w a smile

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

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

The way the Pilot made all announcements, specially the way he congratulated the entire crew as the best team ever, making a comment that due to them they were able to shorter the delay to the destination. Amazing flight .

The plane broke down at the Lima stopover and they offered to put me on a flight the be t day but I had to be back in LA that morning and so I had to buy another ticket from Avianca and United for $2k I asked LATAM for compensation and received none. Very bad experience

Poor handling of carry on luggage. We had a 8 hour stop in Santiago, are over 70 and, in spite of paying full fare they wanted to send carry on to luggage hold. No empathy. We had to show that several group 4/5 passengers were not sending their carry ons before they finally let Is keep them. Very poor .

The flight was late. Please do not delay next time.

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

The flight was delayed multiple times, again no fault of American but again the extra cost, for everything makes it feel like a cheap airline! Especially when flights are outrageously expensive already

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

I had a positive experience on American. I'm blind and traveling with a guide dog and the flight attendants were so kind, friendly, and helpful towards us. They checked in on us during the flight and they made us feel comfortable and welcomed. There was an hour delay before depature, but overall the flight was a smooth ride. I appreciate that there were no issues on this long flight back home.

We were told the flight was delayed 5 times, then it was moved to the next day.

More choices on snacks. Built-in video screen to enjoy entertainment choices.

we landed at cmh ten minutes early but had to sit on tarmac for twenty minutes because a plane was at our gate despite the fact that 3 other gates were open.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

I have a gluten allergy so did have any food

I have a gluten allergy so didn't have any food

Loved the crew . Absolutely no complaints. Except for luggage lost

Not even water is offered on the flight. You cannot lean back on the seats and the seats are so narrow you can’t avoid rubbing elbows with the person next to you.

I couldnt recline the seat. Other than that crew was very attentive and helpful. Thsnk you

I had to go to the boarding counter for them to enter my return flight as it’s not with Avianca. There was a long queue as there were lots of people being called to the counter.

This low cost airline looks and fells more like a local bus. In a 6 hour flight not being able to recline a seat is torture. The only thing available with no charge is a glass of water provided by, mostly, rude staff. Our luggage didn’t arrive

Did not fly with Pakistan International Airlines. Have never flown with Pakistan International Airlines.

Boarding, crew were excellent, food was ok and entertainment need to improve

The seats were uncomfortable and barely reclined at all. Very little leg room despite being business class. The crew was friendly and the food was good. Had to use my own phone for in-flight entertainment.

Avianca is not what it used to be. So disappointing

It was horrible. My experience with Avianca. I didn’t know it was Pakistan international Airlines but anyway, whatever it is it is bad horrible you guys need to upgrade everything in those planes. And you guys charge $130 for a carry-on did they wanna let me in with my carry-on that I travel everywhere with the luggage you guys are such a dog thank you

Boarding was excessively slow. They do it by groups in a way that it doesn’t make sense. After business class , ppl that need assistance and any other priority group they should have ppl board from the back to the front. First rows 20+. Then 15+. Then 10, etc. having ppl sitting in the back board last makes no sense. The libe backame long as soon as ppl on rows 10 or so where told to board. The line went all the way up the ramp and tunnel for 25 mins.

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

Information on your arrival and departure airports