$149+ Cheap flights from Boston (BOS) to Saint Lucia
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — UVF
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Cheapest flights from Boston to Saint LuciaExplore the most affordable flight options available from Boston to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
Explore the most affordable flight options available from Boston to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
This JetBlue deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/317:30 am -
1 stop7h 16m
Sat 1/1612:51 pm -
1 stop11h 57m
Deal found 10/27![JetBlue logo]()
$321
This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:04 am -
1 stop9h 37m
Tue 12/152:32 pm -
1 stop11h 27m
Deal found 10/29![American Airlines logo]()
$369
This JetBlue deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:09 am -
1 stop7h 46m
Sat 11/213:55 pm -
1 stop8h 52m
Deal found 10/28![JetBlue logo]()
$382
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/316:00 am -
1 stop7h 15m
Sat 1/165:17 pm -
1 stop16h 55m
Deal found 10/28![United Airlines logo]()
$391
This JetBlue deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:14 am -
1 stop7h 17m
Sat 12/261:35 pm -
Nonstop5h 14m
Deal found 10/29![JetBlue logo]()
$420
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:59 pm -
1 stop17h 06m
Wed 11/254:25 pm -
1 stop9h 43m
Deal found 10/26![Delta logo]()
$421
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/95:04 am -
1 stop9h 37m
Wed 12/164:41 pm -
1 stop18h 38m
Deal found 10/25![American Airlines logo]()
$426
This Air Canada deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/73:10 pm -
2 stops26h 50m
Tue 12/159:10 am -
2 stops26h 07m
Deal found 10/28![Multiple Airlines logo]()
$808
This Gotogate deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/106:35 pm -
2 stops23h 25m
Thu 12/1712:35 pm -
2 stops22h 13m
Deal found 10/26![Multiple Airlines logo]()
$843
This Air Canada deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/136:35 pm -
2 stops23h 25m
Fri 12/189:10 am -
2 stops25h 38m
Deal found 10/30![Multiple Airlines logo]()
$844
This Air Canada deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/286:35 pm -
2 stops23h 25m
Wed 12/912:35 pm -
2 stops22h 47m
Deal found 10/28![Multiple Airlines logo]()
$864
This Air Canada deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:35 pm -
2 stops23h 25m
Thu 12/312:35 pm -
2 stops22h 13m
Deal found 10/28![Multiple Airlines logo]()
$905
Best flights from Boston to Saint LuciaDiscover carefully curated flight deals from Boston to Saint Lucia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
Discover carefully curated flight deals from Boston to Saint Lucia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/85:20 am -
1 stop8h 44m
Tue 12/154:26 pm -
1 stop19h 35m
Deal found 10/28![Delta logo]()
$421
This JetBlue deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:09 am -
1 stop7h 46m
Sat 11/212:09 pm -
Nonstop5h 14m
Deal found 10/28![JetBlue logo]()
$453
This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/75:00 am -
1 stop8h 35m
Wed 4/142:35 pm -
1 stop19h 27m
Deal found 10/29![American Airlines logo]()
$498
This Gotogate deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/67:40 pm -
2 stops23h 20m
Thu 4/812:35 pm -
2 stops21h 39m
Deal found 10/29![Multiple Airlines logo]()
$778
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/218:10 pm -
1 stop17h 56m
Wed 1/274:35 pm -
1 stop18h 05m
Deal found 10/28![Delta logo]()
$499
This JetBlue deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/196:25 am -
Nonstop4h 49m
Sat 12/263:27 pm -
1 stop9h 20m
Deal found 10/29![JetBlue logo]()
$510
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:20 am -
1 stop8h 44m
Fri 12/184:26 pm -
1 stop17h 11m
Deal found 10/27![Delta logo]()
$510
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:20 am -
1 stop8h 44m
Mon 12/144:26 pm -
1 stop18h 37m
Deal found 10/28![Delta logo]()
$510
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:30 am -
1 stop8h 35m
Tue 11/174:25 pm -
1 stop9h 43m
Deal found 10/28![Delta logo]()
$534
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/125:20 am -
1 stop8h 44m
Sat 12/193:02 pm -
1 stop8h 58m
Deal found 10/27![Delta logo]()
$567
This Gotogate deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/106:35 pm -
2 stops23h 25m
Thu 12/1712:35 pm -
2 stops22h 13m
Deal found 10/26![Multiple Airlines logo]()
$843
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:30 am -
1 stop8h 35m
Mon 11/234:25 pm -
1 stop9h 43m
Deal found 10/27![Delta logo]()
$587
This Air Canada deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/286:35 pm -
2 stops23h 25m
Wed 12/912:35 pm -
2 stops22h 47m
Deal found 10/26![Multiple Airlines logo]()
$864
This Mytrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/135:30 am -
2 stops12h 30m
Tue 1/1912:35 pm -
2 stops22h 37m
Deal found 10/28![Multiple Airlines logo]()
$884
This Air Canada deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/265:45 am -
2 stops12h 15m
Fri 3/53:45 pm -
2 stops19h 25m
Deal found 10/26![Multiple Airlines logo]()
$942
This Gotogate deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/285:30 am -
2 stops12h 30m
Sun 1/3112:35 pm -
2 stops22h 13m
Deal found 10/29![Multiple Airlines logo]()
$942
This Expedia deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1511:05 am -
2 stops31h 55m
Sat 3/203:45 pm -
2 stops51h 14m
Deal found 10/25![Multiple Airlines logo]()
$952
This Air Canada deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/146:35 pm -
2 stops23h 25m
Mon 2/2212:35 pm -
2 stops22h 13m
Deal found 10/29![Multiple Airlines logo]()
$957
This Air Canada deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/163:30 pm -
2 stops26h 30m
Sat 1/2312:35 pm -
2 stops22h 13m
Deal found 10/29![Multiple Airlines logo]()
$1,019
This Expedia deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/133:30 pm -
2 stops26h 30m
Sat 3/203:45 pm -
2 stops51h 14m
Deal found 10/25![Multiple Airlines logo]()
$1,038
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/145:25 pm -
3 stops24h 35m
Mon 11/239:10 am -
2 stops25h 00m
Deal found 10/26![Multiple Airlines logo]()
$1,116
Last-minute flights from Boston to Saint LuciaDiscover last-minute flight deals from Boston to Saint Lucia. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Saint Lucia. Data last updated October 30, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:45 am -
1 stop9h 55m
Mon 11/95:35 pm -
1 stop30h 02m
Deal found 10/26![Air Canada logo]()
$473
This American Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:04 pm -
1 stop18h 26m
Thu 11/124:41 pm -
1 stop18h 39m
Deal found 10/28![American Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:30 am -
1 stop8h 35m
Wed 11/114:25 pm -
1 stop9h 43m
Deal found 10/28![Delta logo]()
$479
This JetBlue deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:09 am -
1 stop7h 46m
Sat 11/213:55 pm -
1 stop8h 52m
Deal found 10/28![JetBlue logo]()
$382
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/145:25 pm -
3 stops24h 35m
Mon 11/239:10 am -
3 stops30h 43m
Deal found 10/26![Multiple Airlines logo]()
$1,114
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/228:59 pm -
1 stop17h 06m
Wed 12/94:26 pm -
1 stop9h 44m
Deal found 10/26![Delta logo]()
$483
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:59 pm -
1 stop17h 06m
Fri 12/44:26 pm -
1 stop19h 35m
Deal found 10/26![Delta logo]()
$421
This Trip.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:45 am -
1 stop9h 55m
Sun 12/65:35 pm -
1 stop30h 02m
Deal found 10/26![Air Canada logo]()
$476
This Air Canada deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:35 pm -
2 stops23h 25m
Thu 12/312:35 pm -
2 stops22h 13m
Deal found 10/28![Multiple Airlines logo]()
$905
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/286:00 am -
1 stop9h 25m
Sat 12/55:17 pm -
1 stop18h 42m
Deal found 10/26![United Airlines logo]()
$428
This Air Canada deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/286:35 pm -
2 stops23h 25m
Wed 12/912:35 pm -
2 stops22h 47m
Deal found 10/28![Multiple Airlines logo]()
$864
This Air Canada deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/303:10 pm -
2 stops26h 50m
Mon 12/79:10 am -
2 stops25h 38m
Deal found 10/26![Multiple Airlines logo]()
$918
One-way flights from Boston to Saint LuciaSearch for one-way flight options from Boston to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
Search for one-way flight options from Boston to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This American Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/106:01 am -
1 stop8h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![American Airlines logo]()
$149
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:05 pm -
1 stop18h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![American Airlines logo]()
$160
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/218:15 pm -
1 stop17h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Delta logo]()
$189
This American Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/177:06 pm -
2 stops18h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![American Airlines logo]()
$199
This American Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/65:00 am -
1 stop9h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![American Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/156:00 pm -
1 stop19h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![American Airlines logo]()
$208
This American Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/97:11 am -
1 stop30h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![American Airlines logo]()
$213
This Travelocity deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:45 am -
1 stop9h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Air Canada logo]()
$220
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/208:10 pm -
1 stop17h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Delta logo]()
$224
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/188:15 pm -
1 stop17h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Delta logo]()
$244
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/207:21 pm -
2 stops19h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![American Airlines logo]()
$245
This Expedia deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1511:05 am -
2 stops31h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$380
Find flight deals from Boston to Saint Lucia
Keep the following information in mind while searching for Boston to Saint Lucia flight deals. Data was last updated October 30, 2026.
Round-trip from | $293 (JetBlue) |
|---|---|
One-way from | $149 (American Airlines) |
Good round-trip deal | $1,363 or less |
Good one-way deal | $404 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston to Saint Lucia 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 7,457,451 searches. Data last updated October 30, 2026.
Use the filters below to find and compare flights from Boston to Saint Lucia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonCastries
BOS Boston Logan Intl - UVF Castries Hewanorra
BOSUVF
Boston Logan Intl
Tue 1/19
5:35 am-3:06 pm
1 stop8h 31m
Castries Hewanorra
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$160
BostonCastries
BOS Boston Logan Intl - UVF Castries Hewanorra
BOSUVF
Boston Logan Intl
Sun 2/21
8:15 pm-3:05 pm
1 stop17h 50m
Castries Hewanorra
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$189
BostonCastries
BOS Boston Logan Intl - UVF Castries Hewanorra
BOSUVF
Boston Logan Intl
Wed 1/20
8:10 pm-3:06 pm
1 stop17h 56m
Castries Hewanorra
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$224
BostonCastries
BOS Boston Logan Intl - UVF Castries Hewanorra
BOSUVF
Boston Logan Intl
Fri 1/8
5:35 am-3:11 pm
1 stop8h 36m
Castries Hewanorra
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$249
BostonCastries
BOS Boston Logan Intl - UVF Castries Hewanorra
BOSUVF
Boston Logan Intl
Thu 1/7
5:35 am-3:11 pm
1 stop8h 36m
Castries Hewanorra
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$249
BostonCastries
BOS Boston Logan Intl - UVF Castries Hewanorra
BOSUVF
Boston Logan Intl
Fri 2/19
8:00 pm-1:07 pm
1 stop16h 07m
Castries Hewanorra
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$258
BostonCastries
BOS Boston Logan Intl - UVF Castries Hewanorra
BOSUVF
Boston Logan Intl
Sat 4/10
8:30 pm-2:23 pm
2 stops17h 53m
Castries Hewanorra
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$265
Quickest round-trip
BostonCastries
BOS Boston Logan Intl - UVF Castries Hewanorra
BOSUVF
Boston Logan Intl
Sun 2/21
8:15 am-2:04 pm
Nonstop4h 49m
Castries Hewanorra
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$269
BostonCastries
BOS Boston Logan Intl - UVF Castries Hewanorra
BOSUVF
Boston Logan Intl
Sun 4/18
5:45 am-3:40 pm
1 stop9h 55m
Castries Hewanorra
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$272
BostonCastries
BOS Boston Logan Intl - UVF Castries Hewanorra
BOSUVF
Boston Logan Intl
Fri 1/8
6:00 am-1:07 pm
2 stops30h 07m
Castries Hewanorra
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$309
Showing 1-10 of 35 resultsSorted by cheapest first
Best time to book a flight from Boston to Saint Lucia
Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from Boston with our price prediction graph.
BOS-UVF
BOS-SLU
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.
Cheapflights Insights
Everything you need to know about your flight from Boston to Saint Lucia
BOS-LC0
BOS-UVF
BOS-SLU
What is the cheapest month to book a flight from Boston to Saint Lucia?
Currently, January is the cheapest month in which you can book a flight from Boston to Saint Lucia (average of $523). Flying from Boston to Saint Lucia in July is currently the most expensive (average of $952). 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.
What is the cheapest time of day to fly from BOS to LC?
Find hourly flight availability from Boston to Saint Lucia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2026.
When flying from Boston to Saint Lucia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How far ahead should I book a flight from Boston to Saint Lucia?
To ensure you get the cheapest price possible for a flight from Boston to Saint Lucia, you should look to book at least 2 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.
Reviews of airlines servicing Saint Lucia
Get insights into the airlines that provide service to Saint Lucia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Saint Lucia. Reviews last updated October 30, 2026.
Get a feel of what it's like to fly with Delta,JetBlue, andAmerican Airlines from Boston to Saint Lucia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Boarding
8.1
Overall
7.8
Food
7.2
Comfort
7.8
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Related info for your journey
Find useful and relevant information for your journey from Boston to Saint Lucia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Boston to Saint Lucia
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Complete your trip
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Boston and Saint Lucia flights
Browse other Boston and Saint Lucia flight options. Last updated on October 30, 2026.
Popular flight searches
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Top 3 airlines flying from Boston to Saint Lucia
Discover the top 3 airlines that operate flights from Boston to Saint Lucia. 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 7,457,451 searches. Data last updated October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$134 | Average$524 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$177 | Average$712 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$292 | Average$582 | FlexibilityNo cancel fee | On-time71% |