$130+ Cheap flights from Boston (BOS) to Saint Lucia
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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — UVF
Jul 18 — Jul 251
Round-trip
1 adult, Economy
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Find cheap flights from Boston to Saint Lucia with Cheapflights
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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 June 18, 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 June 18, 2026.
This Delta deal was found by Cheapflights users on 6/15. 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 8/185:30 am
BOS
- UVF
1 stop8h 44m
Delta
Tue 8/253:34 pm
UVF
- BOS
1 stop9h 51m
Delta
Deal found 6/15![Delta logo]()
$454
This Delta deal was found by Cheapflights users on 6/17. 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 8/295:30 am
BOS
- UVF
1 stop8h 44m
Delta
Sat 9/53:34 pm
UVF
- BOS
1 stop9h 04m
Delta
Deal found 6/17![Delta logo]()
$464
This Delta deal was found by Cheapflights users on 6/13. 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 9/305:30 am
BOS
- UVF
1 stop8h 38m
Delta
Fri 10/93:41 pm
UVF
- BOS
1 stop9h 17m
Delta
Deal found 6/13![Delta logo]()
$490
This Air Canada deal was found by Cheapflights users on 6/13. 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.
Tue 6/165:10 am
BOS
- UVF
1 stop9h 00m
Air Canada
Tue 6/233:15 pm
UVF
- BOS
1 stop18h 33m
Air Canada
Deal found 6/13![Air Canada logo]()
$491
This Delta deal was found by Cheapflights users on 6/18. 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 7/85:30 am
BOS
- UVF
1 stop8h 42m
Delta
Tue 7/143:33 pm
UVF
- BOS
1 stop9h 47m
Delta
Deal found 6/18![Delta logo]()
$499
This Delta deal was found by Cheapflights users on 6/17. 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 11/118:15 pm
BOS
- UVF
1 stop17h 55m
Delta
Fri 11/134:25 pm
UVF
- BOS
1 stop9h 33m
Delta
Deal found 6/17![Delta logo]()
$500
This United Airlines deal was found by Cheapflights users on 6/18. 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 7/46:00 am
BOS
- UVF
1 stop9h 31m
United Airlines
Sat 7/1112:55 pm
UVF
- BOS
1 stop12h 19m
United Airlines
Deal found 6/18![United Airlines logo]()
$513
This Delta deal was found by Cheapflights users on 6/15. 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 6/305:30 am
BOS
- UVF
1 stop8h 43m
Delta
Tue 7/73:33 pm
UVF
- BOS
1 stop9h 47m
Delta
Deal found 6/15![Delta logo]()
$519
This Delta deal was found by Cheapflights users on 6/17. 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 11/108:15 pm
BOS
- UVF
1 stop17h 55m
Delta
Thu 11/124:25 pm
UVF
- BOS
1 stop9h 33m
Delta
Deal found 6/17![Delta logo]()
$529
This Gotogate deal was found by Cheapflights users on 6/15. 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.
Sun 10/186:00 am
BOS
- SLU
2 stops13h 00m
Multiple Airlines
Fri 10/2312:35 pm
SLU
- BOS
2 stops21h 20m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$871
This Gotogate deal was found by Cheapflights users on 6/17. 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.
Sat 9/266:00 am
BOS
- SLU
2 stops13h 00m
Multiple Airlines
Sat 10/312:35 pm
SLU
- BOS
2 stops23h 20m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$874
This Gotogate deal was found by Cheapflights users on 6/14. 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.
Sat 10/36:00 am
BOS
- SLU
2 stops13h 00m
Multiple Airlines
Sat 10/1012:35 pm
SLU
- BOS
2 stops23h 20m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$875
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 June 18, 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 June 18, 2026.
This Delta deal was found by Cheapflights users on 6/17. 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 8/295:30 am
BOS
- UVF
1 stop8h 44m
Delta
Sat 9/53:34 pm
UVF
- BOS
1 stop9h 04m
Delta
Deal found 6/17![Delta logo]()
$464
This United Airlines deal was found by Cheapflights users on 6/16. 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 11/76:00 am
BOS
- UVF
1 stop9h 25m
United Airlines
Sat 11/145:17 pm
UVF
- BOS
1 stop17h 38m
United Airlines
Deal found 6/16![United Airlines logo]()
$547
This American Airlines deal was found by Cheapflights users on 6/14. 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 12/95:23 pm
BOS
- UVF
2 stops18h 56m
American Airlines
Sun 12/134:53 pm
UVF
- BOS
2 stops18h 41m
American Airlines
Deal found 6/14![American Airlines logo]()
$563
This JetBlue deal was found by Cheapflights users on 6/14. 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.
Tue 7/75:15 am
BOS
- UVF
1 stop9h 56m
JetBlue
Fri 7/101:37 pm
UVF
- BOS
1 stop10h 22m
JetBlue
Deal found 6/14![JetBlue logo]()
$575
This Gotogate deal was found by Cheapflights users on 6/17. 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.
Sat 9/266:00 am
BOS
- SLU
2 stops13h 00m
Multiple Airlines
Sat 10/312:35 pm
SLU
- BOS
2 stops23h 20m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$874
This Delta deal was found by Cheapflights users on 6/18. 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 7/85:30 am
BOS
- UVF
1 stop8h 42m
Delta
Tue 7/143:33 pm
UVF
- BOS
1 stop9h 47m
Delta
Deal found 6/18![Delta logo]()
$499
This American Airlines deal was found by Cheapflights users on 6/15. 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 7/257:41 pm
BOS
- UVF
2 stops18h 39m
American Airlines
Tue 7/283:20 pm
UVF
- BOS
2 stops16h 00m
American Airlines
Deal found 6/15![American Airlines logo]()
$572
This United Airlines deal was found by Cheapflights users on 6/13. 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 8/296:00 am
BOS
- UVF
1 stop7h 31m
United Airlines
Sat 9/52:35 pm
UVF
- BOS
2 stops23h 32m
United Airlines
Deal found 6/13![United Airlines logo]()
$583
This Delta deal was found by Cheapflights users on 6/13. 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 8/185:30 am
BOS
- UVF
1 stop8h 44m
Delta
Tue 8/253:34 pm
UVF
- BOS
1 stop9h 51m
Delta
Deal found 6/13![Delta logo]()
$548
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Fri 9/118:30 pm
BOS
- UVF
1 stop17h 01m
United Airlines
Sat 9/192:35 pm
UVF
- BOS
2 stops19h 43m
United Airlines
Deal found 6/17![United Airlines logo]()
$593
This Gotogate deal was found by Cheapflights users on 6/17. 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.
Sat 9/126:00 am
BOS
- SLU
2 stops13h 00m
Multiple Airlines
Sat 9/1912:35 pm
SLU
- BOS
2 stops21h 20m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$900
This Booking.com deal was found by Cheapflights users on 6/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:00 am
BOS
- SLU
2 stops13h 00m
Multiple Airlines
Sun 10/2512:35 pm
SLU
- BOS
2 stops21h 22m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$902
This Gotogate deal was found by Cheapflights users on 6/14. 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.
Sat 11/77:25 pm
BOS
- SLU
2 stops22h 35m
Multiple Airlines
Sat 11/1412:35 pm
SLU
- BOS
2 stops22h 22m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$930
This Booking.com deal was found by Cheapflights users on 6/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:25 pm
BOS
- SLU
2 stops23h 35m
Multiple Airlines
Sat 11/712:35 pm
SLU
- BOS
2 stops22h 22m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$932
This Expedia deal was found by Cheapflights users on 6/14. 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 7/256:00 am
BOS
- SLU
2 stops13h 00m
Multiple Airlines
Wed 7/293:45 pm
SLU
- BOS
2 stops42h 08m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$977
This Mytrip deal was found by Cheapflights users on 6/15. 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.
Sun 10/186:50 pm
BOS
- SLU
3 stops24h 10m
Multiple Airlines
Fri 10/2312:35 pm
SLU
- BOS
2 stops21h 20m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$1,035
This Expedia deal was found by Cheapflights users on 6/14. 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 10/310:15 am
BOS
- SLU
3 stops51h 30m
Multiple Airlines
Sat 10/1012:35 pm
SLU
- BOS
2 stops23h 20m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,122
This Gotogate deal was found by Cheapflights users on 6/14. 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.
Sat 8/226:00 am
BOS
- SLU
2 stops13h 00m
Multiple Airlines
Thu 8/273:45 pm
SLU
- BOS
2 stops42h 08m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,161
Last-minute flights from Boston to Saint LuciaDiscover last-minute flight deals from Boston to Saint Lucia. Data last updated June 18, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Saint Lucia. Data last updated June 18, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/15. 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 6/305:30 am
BOS
- UVF
1 stop8h 43m
Delta
Tue 7/73:33 pm
UVF
- BOS
1 stop9h 47m
Delta
Deal found 6/15![Delta logo]()
$519
This Mytrip deal was found by Cheapflights users on 6/16. 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 7/110:50 am
BOS
- SLU
3 stops25h 15m
Multiple Airlines
Sun 7/55:35 pm
SLU
- BOS
3 stops21h 06m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$1,192
This Gotogate deal was found by Cheapflights users on 6/16. 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 7/27:15 pm
BOS
- SLU
2 stops23h 45m
Multiple Airlines
Sun 7/512:35 pm
SLU
- BOS
2 stops21h 18m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$1,144
This American Airlines deal was found by Cheapflights users on 6/13. 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.
Fri 7/37:37 pm
BOS
- UVF
1 stop17h 39m
American Airlines
Tue 7/73:20 pm
UVF
- BOS
1 stop9h 17m
American Airlines
Deal found 6/13![American Airlines logo]()
$548
This Mytrip deal was found by Cheapflights users on 6/16. 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.
Fri 7/310:50 am
BOS
- SLU
2 stops35h 20m
Multiple Airlines
Sun 7/55:35 pm
SLU
- BOS
3 stops21h 06m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$1,116
This United Airlines deal was found by Cheapflights users on 6/18. 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 7/46:00 am
BOS
- UVF
1 stop9h 31m
United Airlines
Sat 7/1112:55 pm
UVF
- BOS
1 stop12h 19m
United Airlines
Deal found 6/18![United Airlines logo]()
$513
This Gotogate deal was found by Cheapflights users on 6/17. 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.
Sat 7/46:00 am
BOS
- SLU
2 stops13h 00m
Multiple Airlines
Sat 7/1112:35 pm
SLU
- BOS
2 stops21h 18m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$942
This Delta deal was found by Cheapflights users on 6/16. 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 7/85:30 am
BOS
- UVF
1 stop8h 42m
Delta
Tue 7/143:33 pm
UVF
- BOS
1 stop9h 47m
Delta
Deal found 6/16![Delta logo]()
$494
This American Airlines deal was found by Cheapflights users on 6/18. 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 7/85:05 pm
BOS
- UVF
2 stops19h 03m
American Airlines
Tue 7/141:15 pm
UVF
- BOS
2 stops11h 22m
American Airlines
Deal found 6/18![American Airlines logo]()
$568
This American Airlines deal was found by Cheapflights users on 6/17. 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.
Fri 7/106:05 am
BOS
- UVF
1 stop8h 15m
American Airlines
Fri 7/172:50 pm
UVF
- BOS
1 stop19h 16m
American Airlines
Deal found 6/17![American Airlines logo]()
$557
This Gotogate deal was found by Cheapflights users on 6/14. 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.
Sat 7/116:00 am
BOS
- SLU
2 stops13h 00m
Multiple Airlines
Wed 7/1512:35 pm
SLU
- BOS
2 stops21h 18m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$1,108
This Expedia deal was found by Cheapflights users on 6/14. 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 7/256:00 am
BOS
- SLU
2 stops13h 00m
Multiple Airlines
Wed 7/293:45 pm
SLU
- BOS
2 stops42h 08m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$977
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 June 18, 2026.
Search for one-way flight options from Boston to Saint Lucia. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
This Delta deal was found by Cheapflights users on 6/14. 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 9/95:30 am
BOS
- UVF
1 stop8h 42m
Delta
Deal found 6/14![Delta logo]()
$130
This Delta deal was found by Cheapflights users on 6/16. 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 9/115:30 am
BOS
- UVF
1 stop8h 42m
Delta
Deal found 6/16![Delta logo]()
$135
This Expedia deal was found by Cheapflights users on 6/15. 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.
Tue 6/235:10 am
BOS
- UVF
1 stop9h 10m
Air Canada
Deal found 6/15![Air Canada logo]()
$162
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Fri 9/118:30 pm
BOS
- UVF
1 stop17h 01m
United Airlines
Deal found 6/14![United Airlines logo]()
$189
This United Airlines deal was found by Cheapflights users on 6/17. 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 9/266:00 am
BOS
- UVF
1 stop7h 31m
United Airlines
Deal found 6/17![United Airlines logo]()
$194
This United Airlines deal was found by Cheapflights users on 6/13. 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 9/108:31 pm
BOS
- UVF
2 stops41h 00m
United Airlines
Deal found 6/13![United Airlines logo]()
$215
This Air Canada deal was found by Cheapflights users on 6/17. 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 10/245:00 pm
BOS
- UVF
1 stop22h 25m
Air Canada
Deal found 6/17![Air Canada logo]()
$232
This American Airlines deal was found by Cheapflights users on 6/13. 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.
Fri 7/36:55 pm
BOS
- UVF
2 stops17h 20m
American Airlines
Deal found 6/13![American Airlines logo]()
$234
This Air Canada deal was found by Cheapflights users on 6/15. 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.
Thu 9/105:00 pm
BOS
- UVF
1 stop21h 15m
Air Canada
Deal found 6/15![Air Canada logo]()
$238
This Gotogate deal was found by Cheapflights users on 6/16. 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.
Sun 11/155:30 am
BOS
- SLU
2 stops12h 30m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$418
This Booking.com deal was found by Cheapflights users on 6/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:25 pm
BOS
- SLU
2 stops22h 35m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$434
This Gotogate deal was found by Cheapflights users on 6/15. 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 7/237:15 pm
BOS
- SLU
2 stops23h 45m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$619
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 June 18, 2026.
Round-trip from | $454 (Delta) |
|---|---|
One-way from | $130 (Delta) |
Popular in | April |
Cheapest in | August |
Average price | $832 |
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 2,558,603 searches. Data last updated June 18, 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
Quickest round-trip
BostonCastries
BOS - UVF
BOSUVF
Boston Logan Intl
Sat 8/29
5:30 am-2:14 pm
1 stop8h 44m
Castries Hewanorra
Sat 9/5
3:34 pm-12:38 am
1 stop9h 04m
$464
BostonCastries
BOS - UVF
BOSUVF
Boston Logan Intl
Wed 7/8
5:30 am-2:12 pm
1 stop8h 42m
Castries Hewanorra
Tue 7/14
3:33 pm-1:20 am
1 stop9h 47m
$499
BostonCastries
BOS - UVF
BOSUVF
Boston Logan Intl
Sat 11/7
6:00 am-4:25 pm
1 stop9h 25m
Castries Hewanorra
Sat 11/14
5:17 pm-9:55 am
1 stop17h 38m
$547
BostonCastries
BOS - UVF
BOSUVF
Boston Logan Intl
Tue 8/18
5:30 am-2:14 pm
1 stop8h 44m
Castries Hewanorra
Tue 8/25
3:34 pm-1:25 am
1 stop9h 51m
$548
BostonCastries
BOS - UVF
BOSUVF
Boston Logan Intl
Wed 12/9
5:23 pm-1:19 pm
2 stops18h 56m
Castries Hewanorra
Sun 12/13
4:53 pm-10:34 am
2 stops18h 41m
$563
BostonCastries
BOS - UVF
BOSUVF
Boston Logan Intl
Sat 7/25
7:41 pm-2:20 pm
2 stops18h 39m
Castries Hewanorra
Tue 7/28
3:20 pm-7:20 am
2 stops16h 00m
$572
BostonCastries
BOS - UVF
BOSUVF
Boston Logan Intl
Tue 7/7
5:15 am-3:11 pm
1 stop9h 56m
Castries Hewanorra
Fri 7/10
1:37 pm-11:59 pm
1 stop10h 22m
$575
BostonCastries
BOS - UVF
BOSUVF
Boston Logan Intl
Sat 8/29
6:00 am-1:31 pm
1 stop7h 31m
Castries Hewanorra
Sat 9/5
2:35 pm-2:07 pm
2 stops23h 32m
$583
BostonCastries
BOS - UVF
BOSUVF
Boston Logan Intl
Fri 9/11
8:30 pm-1:31 pm
1 stop17h 01m
Castries Hewanorra
Sat 9/19
2:35 pm-10:18 am
2 stops19h 43m
$593
BostonCastries
BOS - SLU
BOSSLU
Boston Logan Intl
Sat 9/26
6:00 am-7:00 pm
2 stops13h 00m
Castries George F. L. Charle
Sat 10/3
12:35 pm-11:55 am
2 stops23h 20m
$874
Showing 1-10 of 31 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 $131). Flying from Boston to Saint Lucia in September is currently the most expensive (average of $537). 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.
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 June 18, 2026.
Get a feel of what it's like to fly with Delta,American Airlines, andJetBlue 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.
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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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Search flights from Boston to Saint Lucia by cabin class
Find flights from Boston to Saint Lucia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and Saint Lucia flights
Browse other Boston and Saint Lucia flight options. Last updated on June 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 2,558,603 searches. Data last updated June 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$140 | Average$658 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$292 | Average$597 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$382 | Average$659 | FlexibilityNo cancel fee | On-time62% |