$184 Find Cheap Flights from Washington Dulles Airport to Saint Thomas Island - Compare and Save

Among airlines operating Washington, D.C. Dulles Intl Airport to Saint Thomas Island flights:

• United Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only United Airlines operates flights between Washington, D.C. Dulles Intl Airport and Saint Thomas Island.

Flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Saint Thomas Island Cyril E King (STT).

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag and a checked bag in Economy Class
• JetBlue: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Two cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island:

• Economy Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $396 round-trip via Newark (EWR), compared to $562 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$80 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737 MAX 8 family is used most often on this route, operated mainly by United Airlines and Alaska Airlines. Other aircraft seen on the route include Boeing 737-700 variants.

One-stop flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island most commonly connect through:

• Charlotte Douglas (CLT) - 49% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 27% of one-stop connections
• Houston George Bush Intcntl (IAH) - 15% of one-stop connections
• San Juan Luis Munoz Marin Intl (SJU) - 7% of one-stop connections

Charlotte Douglas (CLT) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 26% on the Washington, D.C. Dulles Intl Airport to Saint Thomas Island route. Tuesday is the cheapest departure day at $456 round-trip on average, while Saturday is the most expensive at $611, a difference of $155. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Morning is the busiest departure period on Washington, D.C. Dulles Intl Airport to Saint Thomas Island flights, with 100% of flights leaving in that window. Afternoon departures account for 0%, evening flights for 0%, and night flights for 0%.

Some of the most popular sights in Saint Thomas Island are Sapphire Beach, Magens Bay and Coki Beach. These are among the most viewed places in Saint Thomas Island on KAYAK.

These are the earliest and latest flight times available from Washington, D.C. Dulles Intl Airport to Saint Thomas Island:

• Earliest: departs at 8:56 am and lands at 12:56 pm
• Latest: departs at 9:00 am and lands at 1:00 pm.

The flight takes about 4h 00m.

Last-minute fares on this route - booked within 2 weeks of departure - run 1% above the route average of $546. Book 5 weeks before departure for the lowest fares.

A nonstop flight from Washington, D.C. Dulles Intl Airport to Saint Thomas Island takes 4h 00m, covering 1,608 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

One-way fares from Washington, D.C. Dulles Intl Airport to Saint Thomas Island are currently lower than usual. Average one-way flight prices are about $237, which is 10% below the typical average for this route.

Flying via San Juan Luis Munoz Marin Intl (SJU) gives the shortest average 1-stop total travel time at 6h 35m, compared with 7h 48m via Atlanta Hartsfield-Jackson (ATL) and 7h 52m via Newark (EWR).

Saint Thomas Island Cyril E King Airport (STT) hosts 5 major car rental companies, with daily rates starting from around $19 for economy cars. Top options include:
• Budget
• Thrifty
• Dollar
• Alamo
• Hertz

Round-trip flights from Washington, D.C. Dulles Intl Airport to Saint Thomas Island range from $393 to $726, with an average of $546 over the past 12 months. Anything below $393 counts as a good deal.

JetBlue is the only airline on the Washington, D.C. Dulles Intl Airport to Saint Thomas Island route offering in-flight Wi-Fi. Pricing depends on fare class.