IAD - SXM

$98 Find Cheap Flights from Washington Dulles Airport to Simpson Bay - Compare and Save

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Everything you should know

Cheapest round-trip
$303
Typical prices: $553-$798
American Airlines
Tue 2/6Fri 2/9
IAD - SXM • 1 stop
Cheapest non-stop
$403
Typical prices: $556-$812
United Airlines
Wed 12/12Mon 12/17
IAD - SXM • Non-stop
Nonstop flights
You can fly direct with United Airlines. Average duration is 4h 12m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 43% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 30% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $592 (round-trip)
Shortest trip • 8h 08m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Dulles Intl to Simpson Bay (IAD-SXM)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Simpson Bay

Sat, Feb 6 - Tue, Feb 9
American Airlines Logo
7:14 pm - 2:59 pmIAD  Washington, D.C. Dulles Intl-SXM Simpson Bay Princess Juliana
18h 45m1 stop Charlotte Douglas
American Airlines Logo
5:29 pm - 6:44 pmSXM  Simpson Bay Princess Juliana-IAD Washington, D.C. Dulles Intl
26h 15m2 stops Miami Charlotte Douglas
$303American Airlines
Wed, Jan 6 - Wed, Jan 20
American Airlines Logo
7:00 am - 2:59 pmIAD  Washington, D.C. Dulles Intl-SXM Simpson Bay Princess Juliana
6h 59m1 stop Charlotte Douglas
American Airlines Logo
4:02 pm - 10:04 amSXM  Simpson Bay Princess Juliana-IAD Washington, D.C. Dulles Intl
19h 02m1 stop Charlotte Douglas
$304American Airlines
Sun, Dec 13 - Fri, Dec 18
American Airlines Logo
8:03 pm - 1:32 pmIAD  Washington, D.C. Dulles Intl-SXM Simpson Bay Princess Juliana
16h 29m1 stop Charlotte Douglas
American Airlines Logo
3:29 pm - 10:13 pmSXM  Simpson Bay Princess Juliana-IAD Washington, D.C. Dulles Intl
7h 44m1 stop Charlotte Douglas
$305American Airlines
Tue, Dec 8 - Wed, Dec 16
American Airlines Logo
7:14 pm - 1:32 pmIAD  Washington, D.C. Dulles Intl-SXM Simpson Bay Princess Juliana
17h 18m1 stop Charlotte Douglas
American Airlines Logo
2:32 pm - 8:52 pmSXM  Simpson Bay Princess Juliana-IAD Washington, D.C. Dulles Intl
7h 20m1 stop Charlotte Douglas
$305American Airlines
Wed, Dec 16 - Mon, Dec 21
United Airlines Logo
10:15 pm - 3:57 pmIAD  Washington, D.C. Dulles Intl-SXM Simpson Bay Princess Juliana
16h 42m1 stop Chicago O'Hare Intl
United Airlines Logo
5:00 pm - 8:40 pmSXM  Simpson Bay Princess Juliana-IAD Washington, D.C. Dulles Intl
4h 40mnonstop
$385United Airlines
Fri, Dec 11 - Fri, Dec 18
United Airlines Logo
10:15 pm - 3:57 pmIAD  Washington, D.C. Dulles Intl-SXM Simpson Bay Princess Juliana
16h 42m1 stop Chicago O'Hare Intl
United Airlines Logo
5:00 pm - 8:40 pmSXM  Simpson Bay Princess Juliana-IAD Washington, D.C. Dulles Intl
4h 40mnonstop
$385United Airlines
Tue, Nov 17 - Sat, Nov 21
United Airlines Logo
6:10 am - 1:50 pmIAD  Washington, D.C. Dulles Intl-SXM Simpson Bay Princess Juliana
6h 40m1 stop Newark
United Airlines Logo
5:00 pm - 8:40 pmSXM  Simpson Bay Princess Juliana-IAD Washington, D.C. Dulles Intl
4h 40mnonstop
$385United Airlines
Tue, Jan 19 - Fri, Jan 29
Delta Logo
6:00 am - 2:57 pmIAD  Washington, D.C. Dulles Intl-SXM Simpson Bay Princess Juliana
7h 57m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:50 pm - 9:09 pmSXM  Simpson Bay Princess Juliana-IAD Washington, D.C. Dulles Intl
8h 19m1 stop Atlanta Hartsfield-Jackson
$393Delta
Mon, Feb 1 - Fri, Feb 5
Delta Logo
6:00 am - 2:57 pmIAD  Washington, D.C. Dulles Intl-SXM Simpson Bay Princess Juliana
7h 57m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:50 pm - 9:09 pmSXM  Simpson Bay Princess Juliana-IAD Washington, D.C. Dulles Intl
8h 19m1 stop Atlanta Hartsfield-Jackson
$393Delta
Mon, Jan 18 - Thu, Jan 28
Delta Logo
6:00 am - 2:57 pmIAD  Washington, D.C. Dulles Intl-SXM Simpson Bay Princess Juliana
7h 57m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:50 pm - 12:46 amSXM  Simpson Bay Princess Juliana-IAD Washington, D.C. Dulles Intl
11h 56m1 stop Atlanta Hartsfield-Jackson
$393Delta
Booking Insights

Price, demand and travel trends for Washington, D.C. Dulles Intl Airport to Simpson Bay flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Simpson Bay?

Round-trip flights from Washington, D.C. Dulles Intl Airport to Simpson Bay typically range from $553 to $798. The lowest price found in the past 5 days was $303, on American Airlines.

What's the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Simpson Bay?

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Simpson Bay. It’s 15% cheaper than the average day, while Saturday is the most expensive, with prices 7% higher.

What’s the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Simpson Bay?

•August is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Simpson Bay at $457 round-trip.
•December ($845) and March ($687) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 84% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Washington, D.C. Dulles Intl Airport to Simpson Bay the cheapest?

Flights from Washington, D.C. Dulles Intl Airport to Simpson Bay are cheapest 7 weeks before departure. Booking in this window typically costs about 43% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for Washington, D.C. Dulles Intl Airport to Simpson Bay flights

Low season

September

Cheapest flight

$98
Beat the crowds with an average 77% drop in travelers.
The most popular month to fly with an average 115% increase in travelers.
One-way flight from Washington, D.C. Dulles Intl Airport to Simpson Bay

When to book flights from Dulles Intl to Simpson Bay

Are your dates flexible? Find out the best times to travel from Dulles Intl to Simpson Bay based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Washington, D.C. Dulles Intl Airport to Simpson Bay flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Washington, D.C. Dulles Intl Airport to Simpson Bay?

    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.

  • What cabin classes can I book on flights from Washington, D.C. Dulles Intl Airport to Simpson Bay?

    Two cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Simpson Bay:

    • Economy Class
    • Business Class

  • How long is a flight from Washington, D.C. Dulles Intl Airport to Simpson Bay?

    A nonstop flight from Washington, D.C. Dulles Intl Airport to Simpson Bay takes 4h 12m, covering 1,681 miles.

  • Do I need a passport to fly from Washington, D.C. Dulles Intl Airport to Simpson Bay?

    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.

  • How much should I expect to pay for a Washington, D.C. Dulles Intl Airport to Simpson Bay flight?

    Round-trip flights from Washington, D.C. Dulles Intl Airport to Simpson Bay range from $553 to $798, with an average of $656 over the past 12 months. Anything below $553 counts as a good deal.

  • How expensive are last-minute Washington, D.C. Dulles Intl Airport to Simpson Bay flights?

    Last-minute fares on this route (booked within two weeks of departure) run 50% above the $656 route average. Book 7 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Washington, D.C. Dulles Intl Airport to Simpson Bay?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $592 round-trip via Charlotte Douglas (CLT), compared to $666 for nonstop.

  • What is the standard checked-bag allowance on flights from Washington, D.C. Dulles Intl Airport to Simpson Bay?

    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.

  • Which aircraft model is used most often on flights from Washington, D.C. Dulles Intl Airport to Simpson Bay?

    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.

  • Which airlines offer Wi-Fi on Washington, D.C. Dulles Intl Airport to Simpson Bay flights?

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

  • How are flight prices from Washington, D.C. Dulles Intl Airport to Simpson Bay looking right now?

    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 $134, which is 58% below the typical average for this route.

  • What car rental options are available at Simpson Bay Princess Juliana Airport (SXM)?

    Simpson Bay Princess Juliana Airport (SXM) hosts 5 major car rental companies, with daily rates averaging $40 for economy cars. Top options include:

    • Right Cars
    • Ace
    • Budget
    • Europcar
    • Alamo

  • Which airports can I use when flying from Washington, D.C. Dulles Intl Airport to 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).

  • Which airports do connecting flights from Washington, D.C. Dulles Intl Airport to Simpson Bay pass through?

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

    • Charlotte Douglas (CLT) - 51% of one-stop connections
    • Newark (EWR) - 27% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 15% of one-stop connections
    • Panama City Tocumen Intl (PTY) - 7% of one-stop connections

  • Can I save money by using flexible dates for flights from Washington, D.C. Dulles Intl Airport to Simpson Bay?

    Yes. Flexible dates can save you up to 21% on flights from Washington, D.C. Dulles Intl Airport to Simpson Bay. Tuesday is the cheapest departure day at $558 round-trip on average, while Saturday is the most expensive at $702, a difference of $144.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Washington, D.C. Dulles Intl Airport to Simpson Bay?

    Only United Airlines operates flights between Washington, D.C. Dulles Intl Airport and Simpson Bay.

  • How much time can I save by choosing a different layover airport from Washington, D.C. Dulles Intl Airport to Simpson Bay?

    Flying via Charlotte Douglas (CLT) gives the shortest average 1-stop total travel time at 7h 45m, compared with 8h 08m via Newark (EWR) and 9h 42m via Atlanta Hartsfield-Jackson (ATL).

  • Which airlines offer extra legroom and free seat selection on Washington, D.C. Dulles Intl Airport to Simpson Bay flights?

    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.

  • Which airlines include bags at no extra cost on Washington, D.C. Dulles Intl Airport to Simpson Bay flights?

    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
    • Lufthansa: a cabin bag in Economy Class class

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

Your guide to booking Washington, D.C. Dulles Intl Airport to Simpson Bay flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Saturday. On this route, Tuesday flights average $558, about $144 less than Saturday fares (21% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 7 weeks before you fly. On this route, that window historically saves about 43% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Washington, D.C. Dulles Intl Airport to Simpson Bay trip for August. Fares historically average $457 round-trip in that month - typically $388 less than the most expensive month, which is December (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Charlotte Douglas Airport (CLT) can be cheaper than flying direct. The cheapest layover option averages $592 round-trip on this route - about $74 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Simpson Bay Princess Juliana Airport.

    • Simpson Bay Resort Marina & Spa
    • Hilton Vacation Club Flamingo Beach St. Maarten
    • The Atrium Beach Resort and Spa Sint Maarten, an Ascend Collection Hotel

Prefer to fly direct from Washington Dulles Airport to Simpson Bay?

 
Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Simpson Bay Princess Juliana Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Simpson Bay Princess Juliana

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Simpson Bay Princess Juliana to Washington, D.C. Dulles Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

More options for your flight from Dulles Intl to Simpson Bay

Complete your trip to Simpson Bay with a hotel stay or car rental