$120 Find Cheap Flights from Washington Dulles Airport to Simpson Bay - Compare and Save

Among airlines operating Washington, D.C. Dulles Intl Airport to Simpson Bay 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 Simpson Bay.

Flights from Washington, D.C. Dulles Intl Airport to Simpson Bay usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Simpson Bay Princess Juliana (SXM).

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

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 Simpson Bay:

• Economy Class
• Business Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $582 round-trip via Charlotte Douglas (CLT), compared to $674 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$70 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 Southwest. Other aircraft seen on the route include Boeing 737 variants.

One-stop flights from Washington, D.C. Dulles Intl Airport to Simpson Bay most commonly connect through:

• Charlotte Douglas (CLT) - 41% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 26% of one-stop connections
• Newark (EWR) - 25% of one-stop connections
• Panama City Tocumen Intl (PTY) - 8% 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 14% on the Washington, D.C. Dulles Intl Airport to Simpson Bay route. Tuesday is the cheapest departure day at $613 round-trip on average, while Saturday is the most expensive at $705, a difference of $92. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

• Earliest: departs at 8:38 am and lands at 12:50 pm
• Latest: departs at 8:38 am and lands at 12:50 pm.

The flight takes about 4h 12m.

Last-minute fares on this route - booked within 2 weeks of departure - run 49% above the route average of $661. Book 7 weeks before departure for the lowest fares.

A nonstop flight from Washington, D.C. Dulles Intl Airport to Simpson Bay takes 4h 12m, covering 1,681 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 Simpson Bay are currently lower than usual. Average one-way flight prices are about $141, which is 57% below the typical average for this route.

Flying via Charlotte Douglas (CLT) gives the shortest average 1-stop total travel time at 7h 43m, compared with 8h 08m via Newark (EWR) and 8h 52m via Atlanta Hartsfield-Jackson (ATL).

Simpson Bay Princess Juliana Airport (SXM) hosts 5 major car rental companies, with daily rates starting from around $2 for economy cars. Top options include:
• Ace
• Right Cars
• Europcar
• Budget
• Alamo

Round-trip flights from Washington, D.C. Dulles Intl Airport to Simpson Bay range from $563 to $801, with an average of $661 over the past 12 months. Anything below $563 counts as a good deal.