$273 Cheap Delta flights Washington (IAD) to St. Thomas (STT)

View $273 flight on Tue, Aug 26, 2025Opens in a new window

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$273 Cheap Delta flights Washington (IAD) to St. Thomas (STT)

Prices were available within the past 7 days and start at $273 for one-way flights and $469 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Sep 22 - Wed, Oct 1
IAD
Washington
STT
St. Thomas
$469 Roundtrip, found 2 hours ago
$469
Roundtrip
found 2 hours ago
Select Delta flight, departing Mon, Sep 22 from Washington to St. Thomas, returning Wed, Oct 1, priced at $469 found 2 hours ago
Delta
Wed, Jan 28 - Wed, Feb 4
IAD
Washington
STT
St. Thomas
$479 Roundtrip, found 5 days ago
$479
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Jan 28 from Washington to St. Thomas, returning Wed, Feb 4, priced at $479 found 5 days ago
Delta
Sat, Aug 30 - Thu, Sep 4
IAD
Washington
STT
St. Thomas
$494 Roundtrip, found 1 hour ago
$494
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Aug 30 from Washington to St. Thomas, returning Thu, Sep 4, priced at $494 found 1 hour ago
Delta
Mon, Sep 22 - Tue, Sep 30
IAD
Washington
STT
St. Thomas
$509 Roundtrip, found 2 hours ago
$509
Roundtrip
found 2 hours ago
Select Delta flight, departing Mon, Sep 22 from Washington to St. Thomas, returning Tue, Sep 30, priced at $509 found 2 hours ago
Delta
Sat, Sep 27 - Mon, Oct 6
IAD
Washington
STT
St. Thomas
$519 Roundtrip, found 2 hours ago
$519
Roundtrip
found 2 hours ago
Select Delta flight, departing Sat, Sep 27 from Washington to St. Thomas, returning Mon, Oct 6, priced at $519 found 2 hours ago
Delta
Sun, Sep 28 - Mon, Oct 6
IAD
Washington
STT
St. Thomas
$534 Roundtrip, found 2 hours ago
$534
Roundtrip
found 2 hours ago
Select Delta flight, departing Sun, Sep 28 from Washington to St. Thomas, returning Mon, Oct 6, priced at $534 found 2 hours ago
Flights from Washington (IAD) to St. Thomas (STT)
Origin airport
Washington Dulles Intl.
Destination airport
Cyril E. King
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Popular airline
Delta
Distance
1609 mi
Average flight time
3 hours 2 mins

Frequently asked questions

How much is a Delta Air Lines flight from Washington Dulles Intl. Airport (IAD) to Cyril E. King Airport (STT)?
Landing cheap one-way Delta Air Lines flights from IAD to STT from $273 on Expedia couldn't be simpler — just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly round-trip fares from $469 for your next getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from IAD to STT with Delta Air Lines?
September is one of the most affordable months to jet away to St. Thomas with Delta Air Lines. You could also find excellent prices on one-way and return tickets in October.
What is the cheapest time to book flights from Washington Dulles Intl. Airport (IAD) to Cyril E. King Airport (STT) with Delta Air Lines?
Getting the best Delta Air Lines deals from IAD to STT often comes down to timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. As an added bonus, you can pocket 17% on average by buying your fare on a Sunday rather than a Friday, which is usually the most expensive day to book.* It's a good idea to start searching for flights about one month before you want to travel.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Washington Dulles Intl. Airport (IAD) to Cyril E. King Airport (STT)?
Enter your dates, click search and tick the "Nonstop" filter on Expedia to find any direct flights from IAD to STT with Delta Air Lines or other carriers.
What is the earliest Delta Air Lines flight from IAD to STT?
To find the earliest departures from IAD to STT with Delta Air Lines, sort your results by "Morning" and "Early Morning." Booking an early flight generally means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in St. Thomas?
Jump on a Delta Air Lines flight from Washington Dulles Intl. Airport (IAD) to St. Thomas, and you're most likely to land at Cyril E. King Airport (STT). This is the airline's primary hub here.
Why fly with Delta Air Lines from IAD to STT?
Offering a rewarding loyalty program and an excellent in-flight experience, Delta Air Lines is a popular option for many passengers heading from IAD to STT. Also, if you're a Delta SkyMiles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be spent on future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Washington Dulles Intl. Airport (IAD) to Cyril E. King Airport (STT)?
It's usually possible to modify or cancel your flight, although additional charges may apply if your booking was made over 24 hours ago. Prefer to keep your options open? Make use of Expedia's "Changes included" or "No cancel fee" filter to find flights that won't penalize you if you have to alter your plans. To modify your booking, head to "Trips," select your flight and click on "Manage Booking" for further information.

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