$459+ Cheap flights from Dulles Intl (IAD) 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Dulles Intl to Saint Lucia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Dulles Intl to Saint Lucia
Keep the following information in mind while searching for Dulles Intl to Saint Lucia flight deals. Data was last updated April 22, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $459 (Justfly.com) |
Popular in | December |
Cheapest in | January |
Average price | $779 |
Find flight deals from Dulles Intl to Saint Lucia
Cheapest flights from Dulles Intl to Saint LuciaExplore the most affordable flight options available from Dulles Intl to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.
Explore the most affordable flight options available from Dulles Intl to Saint Lucia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.
This Justfly.com deal was found by Cheapflights users on 4/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 4/22. 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.
This American Airlines deal was found by Cheapflights users on 4/22. 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.
This Booking.com deal was found by Cheapflights users on 4/22. 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.
This Mytrip deal was found by Cheapflights users on 4/22. 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.
This WestJet deal was found by Cheapflights users on 4/22. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl 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 April 22, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Saint Lucia that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Castries
IAD - UVF
IADUVF
Washington, D.C. Dulles Intl
Tue 5/13
7:05 am-2:06 pm
1 stop7h 01m
Castries Hewanorra
Sat 5/17
3:26 pm-11:35 pm
1 stop8h 09m
Washington, D.C.Castries
IAD - UVF
IADUVF
Washington, D.C. Dulles Intl
Mon 6/16
8:18 am-2:15 pm
2 stops29h 57m
Castries Hewanorra
Fri 6/27
3:10 pm-1:42 pm
1 stop22h 32m
Washington, D.C.Castries
IAD - UVF
IADUVF
Washington, D.C. Dulles Intl
Wed 5/28
5:02 am-2:11 pm
1 stop9h 09m
Castries Hewanorra
Wed 6/4
3:14 pm-8:38 am
1 stop17h 24m
Washington, D.C.Castries
IAD - UVF
IADUVF
Washington, D.C. Dulles Intl
Fri 6/6
3:13 pm-1:45 pm
3 stops46h 32m
Castries Hewanorra
Fri 6/13
3:10 pm-9:41 am
1 stop18h 31m
Washington, D.C.Castries
IAD - SLU
IADSLU
Washington, D.C. Dulles Intl
Fri 6/13
3:13 pm-11:45 am
3 stops44h 32m
Castries George F. L. Charle
Mon 6/16
9:25 am-9:04 pm
3 stops35h 39m
Washington, D.C.Castries
IAD - UVF
IADUVF
Washington, D.C. Dulles Intl
Wed 7/9
6:45 pm-1:45 pm
2 stops19h 00m
Castries Hewanorra
Thu 7/24
2:35 pm-5:54 pm
2 stops27h 19m
Washington, D.C.Castries
IAD - UVF
IADUVF
Washington, D.C. Dulles Intl
Sat 6/7
6:27 am-3:30 pm
1 stop9h 03m
Castries Hewanorra
Sat 6/14
12:55 pm-12:30 am
1 stop11h 35m
Washington, D.C.Castries
IAD - UVF
IADUVF
Washington, D.C. Dulles Intl
Tue 7/15
6:35 am-2:15 pm
1 stop7h 40m
Washington, D.C.Castries
IAD - UVF
IADUVF
Washington, D.C. Dulles Intl
Tue 7/15
12:30 pm-1:45 pm
2 stops49h 15m
Best time to book a flight from Dulles Intl to Saint Lucia
Have a flexible travel schedule? Discover the best time to fly to Saint Lucia from Dulles Intl with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Saint Lucia
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Saint Lucia?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Saint Lucia (average of $556). Flying from Washington, D.C. Dulles Intl Airport to Saint Lucia in December is currently the most expensive (average of $730). 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 IAD to LC?
Find hourly flight availability from Dulles Intl 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 April 22, 2025.
When flying from Washington, D.C. Dulles Intl Airport 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.
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 April 22, 2025.
Read reviews from past customers who have flown Delta, United Airlines and American Airlines from Washington, D.C. to Saint Lucia. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Comfort
Crew
Boarding
Entertainment
Overall
Reviews
Aaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl 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 Dulles Intl to Saint Lucia
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Dulles Intl to Saint Lucia
Discover the top 2 airlines that operate flights from Dulles Intl 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 April 22, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$535 | Average$766 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$565 | Average$802 | FlexibilityNo cancel fee | On-timeN/A |