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Cheap flights from Boston (BOS) to Castries (SLU) from $489

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/19. 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.
BOS — SLU
Jun 17 — Jun 241
From?
To?
Mon 6/17
Mon 6/24
1 adult, Economy
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Cheap flight deals from Boston to Castries

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Castries (SLU). 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 June 12, 2024.

Popular in

August

Cheapest in

September

Round-trip from

$595

One-way from

$489
High demand for flights, 22% potential price rise
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Best time to find cheap flights, 19% potential price drop
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From Boston Logan Intl to Castries George F. L. Charle
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One-way flight from Boston Logan Intl to Castries George F. L. Charle
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What is the cheapest day to fly round-trip from Boston to Castries?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 41%.

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

To save up to 67% on this flight, we recommend booking at least 19 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Boston to Castries from $430 1-2 weeks out and tickets from $658 for flights departing within the next 72 hours.

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

The best pricing can be found in the month of September. Prices to Castries from Boston average $817. You can even find prices in September for less than $817, as users have found deals to Castries from as low as $513. The month of August appears to be one of the more expensive times to travel to Castries from Boston. Flying in the targeted month can save you up to 28%.

What is the cheapest time of day to fly from BOS to SLU?

It’s optimal to fly from Boston to Castries in the afternoon. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight at noon.

Cheap Boston to Castries flights in June & July 2024

Find cheap flight options from Boston to Castries specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,117,830 searches. Prices were last updated on June 12, 2024.
Wed 7/310:20 amBOS - SLU
3 stops32h 40mMultiple Airlines
Tue 7/97:30 amSLU - BOS
3 stops31h 08mMultiple Airlines
Deal found 6/11$1,017
Wed 7/37:40 pmBOS - SLU
2 stops23h 20mMultiple Airlines
Tue 7/97:30 amSLU - BOS
3 stops31h 08mMultiple Airlines
Deal found 6/11$1,021
Wed 7/37:40 pmBOS - SLU
2 stops23h 20mMultiple Airlines
Tue 7/97:30 amSLU - BOS
2 stops25h 59mMultiple Airlines
Deal found 6/11$1,025
Mon 6/247:40 pmBOS - SLU
3 stops20h 15mMultiple Airlines
Thu 7/259:25 amSLU - BOS
2 stops24h 04mMultiple Airlines
Deal found 6/10$1,669

Boston to Castries 2024 flight deals

Discover exclusive flight deals for travel between Boston and Castries in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 12, 2024.
Wed 7/310:20 amBOS - SLU
3 stops32h 40mMultiple Airlines
Tue 7/97:30 amSLU - BOS
3 stops31h 08mMultiple Airlines
Deal found 6/11$1,017
Wed 7/37:40 pmBOS - SLU
2 stops23h 20mMultiple Airlines
Tue 7/97:30 amSLU - BOS
3 stops31h 08mMultiple Airlines
Deal found 6/11$1,021
Wed 7/37:40 pmBOS - SLU
2 stops23h 20mMultiple Airlines
Tue 7/97:30 amSLU - BOS
2 stops25h 59mMultiple Airlines
Deal found 6/11$1,025
Mon 8/126:10 amBOS - SLU
3 stops29h 15mMultiple Airlines
Fri 8/1612:15 pmSLU - BOS
3 stops24h 15mMultiple Airlines
Deal found 6/12$1,425
Mon 8/126:10 amBOS - SLU
3 stops29h 15mMultiple Airlines
Fri 8/169:25 amSLU - BOS
2 stops24h 04mMultiple Airlines
Deal found 6/12$1,438
Mon 6/247:40 pmBOS - SLU
3 stops20h 15mMultiple Airlines
Thu 7/259:25 amSLU - BOS
2 stops24h 04mMultiple Airlines
Deal found 6/10$1,669
Tue 12/176:00 amBOS - SLU
2 stops26h 30mMultiple Airlines
Wed 12/2510:25 amSLU - BOS
2 stops13h 09mMultiple Airlines
Deal found 6/11$1,693
Tue 9/34:05 pmBOS - SLU
2 stops17h 25mMultiple Airlines
Sun 9/85:00 amSLU - BOS
2 stops17h 39mMultiple Airlines
Deal found 6/12$1,706
Wed 8/146:05 amBOS - SLU
2 stops29h 55mMultiple Airlines
Sun 8/185:00 amSLU - BOS
3 stops52h 29mMultiple Airlines
Deal found 6/11$1,709

Boston to Castries flights leaving soon

Find last-minute flight options from Boston to Castries for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 12, 2024.
Mon 6/247:40 pmBOS - SLU
3 stops20h 15mMultiple Airlines
Thu 7/259:25 amSLU - BOS
2 stops24h 04mMultiple Airlines
Deal found 6/10$1,669

One-way flights to Castries from Boston

Search for one-way flight options from Boston to Castries. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 12, 2024.
Wed 6/195:39 pmBOS - SLU
2 stops41h 51mMultiple Airlines
Deal found 6/12$489
Wed 6/198:00 pmBOS - SLU
3 stops36h 55mMultiple Airlines
Deal found 6/12$510
Tue 6/183:42 pmBOS - SLU
3 stops44h 18mMultiple Airlines
Deal found 6/12$553
Tue 6/185:58 pmBOS - SLU
2 stops42h 02mMultiple Airlines
Deal found 6/12$588
Mon 6/1710:18 pmBOS - SLU
2 stops34h 37mMultiple Airlines
Deal found 6/12$653
Mon 6/1710:18 pmBOS - SLU
3 stops34h 37mMultiple Airlines
Deal found 6/12$676

Find flights from Boston to Castries within your budget

Customize your flight search to find flights from Boston to Castries 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 3,117,830 searches. Data last updated June 12, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,017 - $1,775

Route

Depart

Return

Price

Boston Logan IntlCastries George F. L. Charle

BOS - SLU

BOSSLU

Boston Logan Intl

Wed 7/3

3 stops32h 40m

Castries George F. L. Charle

Tue 7/9

3 stops31h 08m

$1,017

Boston Logan IntlCastries George F. L. Charle

BOS - SLU

BOSSLU

Boston Logan Intl

Wed 7/3

2 stops23h 20m

Castries George F. L. Charle

Tue 7/9

3 stops31h 08m

$1,021

Boston Logan IntlCastries George F. L. Charle

BOS - SLU

BOSSLU

Boston Logan Intl

Wed 7/3

2 stops23h 20m

Castries George F. L. Charle

Tue 7/9

2 stops25h 59m

$1,025

Boston Logan IntlCastries George F. L. Charle

BOS - SLU

BOSSLU

Boston Logan Intl

Mon 8/12

3 stops29h 15m

Castries George F. L. Charle

Fri 8/16

3 stops24h 15m

$1,425

Boston Logan IntlCastries George F. L. Charle

BOS - SLU

BOSSLU

Boston Logan Intl

Mon 8/12

3 stops29h 15m

Castries George F. L. Charle

Fri 8/16

2 stops24h 04m

$1,438

Boston Logan IntlCastries George F. L. Charle

BOS - SLU

BOSSLU

Boston Logan Intl

Mon 6/24

3 stops20h 15m

Castries George F. L. Charle

Thu 7/25

2 stops24h 04m

$1,669

Boston Logan IntlCastries George F. L. Charle

BOS - SLU

BOSSLU

Boston Logan Intl

Tue 9/3

2 stops17h 25m

Castries George F. L. Charle

Sun 9/8

2 stops17h 39m

$1,706

Boston Logan IntlCastries George F. L. Charle

BOS - SLU

BOSSLU

Boston Logan Intl

Wed 8/14

2 stops29h 55m

Castries George F. L. Charle

Sun 8/18

3 stops52h 29m

$1,709

Boston Logan IntlCastries George F. L. Charle

BOS - SLU

BOSSLU

Boston Logan Intl

Wed 8/14

3 stops39h 40m

Castries George F. L. Charle

Sun 8/18

3 stops50h 39m

$1,775

Flights are sorted by cheapest first

Deals found on 6/11

How far ahead should I book a flight from Boston to Castries?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Castries. Price data was last updated on June 12, 2024.
To ensure you get the cheapest price possible for a flight from Boston to Castries, you should look to book at least 62 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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What is the cheapest day to fly from Boston to Castries?

Use this chart to determine the cheapest time to fly round-trip from Boston to Castries. Price data was last updated on June 9, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Boston to Castries flight should consider departing on Wednesday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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Best time to book a flight from Boston to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from Boston 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.

Related info for your journey

Find useful and relevant information for your journey from Boston to Castries. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Boston to Castries for under $1,100 on Cheapflights?

    Yes, there are multiple flights from Boston to Castries for under $1,100. The cheapest flight booked recently is on Multiple Airlines for just $1,017, but on average you can expect to pay $1,553.

  • Are there last-minute flights available from Boston to Castries for under $1,700?

    There are currently 1+ open flights from Boston to Castries within the next 7 days for less than $1,700.

  • What does BOS to SLU mean?

    Boston Logan Intl Airport is BOS and Castries George F. L. Charle Airport is SLU. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

  • Can I find deals for flights from Boston to Castries that include extra baggage allowance?

    The amount of baggage you can bring on your Boston to Castries flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Boston to Castries with specific airlines?

    Yes, Cheapflights allows you to browse and filter Boston to Castries flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Boston to Castries that include hotel bookings?

    Yes. In addition to deals on Boston to Castries flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Castries?

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

  • Can I find deals for business class flights from Boston to Castries?

    Yes. Cheapflights offers flight deals from Boston to Castries by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Boston to Castries that allow pets onboard?

    Many airlines flying from Boston to Castries offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Boston to Castries?

    Yes, you can often find last-minute deals on Boston to Castries flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Boston to Castries flight deals updated?

    The Boston to Castries flight deals you see on this page were last updated on 6/12.

  • What are the most popular airlines that fly from Boston to Castries?

    When booking a flight from Boston to Castries, you may want to consider flying on American Airlines, JetBlue or Linear Air Taxi as they are the most popular for this route.

  • What is the cheapest month to book a flight from Boston to Castries?

    Currently, January is the cheapest month in which you can book a flight from Boston to Castries (average of $595). Flying from Boston to Castries in July is currently the most expensive (average of $802). 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.

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Alternative routes for Boston to Castries
See prices for flight routes from nearby airports that may be better suited for you.

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Top 3 airlines flying from Boston to Castries

Discover the top 3 airlines that operate flights from Boston to Castries. 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 3,117,830 searches. Data last updated June 12, 2024.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$410Average$711FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$490Average$882FlexibilityNo cancel feeOn-time71%
Linear Air TaxiCheapest$42,471Average$84,934FlexibilityNo cancel feeOn-timeN/A
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Search flights from Boston to Castries by cabin class

Find flights from Boston to Castries, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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