$223 Cheap Flights from Philipsburg (SXM) to Washington (IAD)

View $223 flight on Sat, May 31, 2025Opens in a new window

Popular airlines from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD)

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Find available prices by choosing your travel dates.

Cheap Flights from Philipsburg to Washington (SXM-IAD)

Prices were available within the past 7 days and start at $223 for one-way flights and $373 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Aug 2 - Thu, Aug 7
SXM
Saint Martin
IAD
Washington
$373 Roundtrip, found 7 hours ago
$373
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Sat, Aug 2 from Saint Martin to Washington, returning Thu, Aug 7, priced at $373 found 7 hours ago
Frontier Airlines
Sat, Aug 9 - Sun, Aug 17
SXM
Saint Martin
IAD
Washington
$381 Roundtrip, found 4 hours ago
$381
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, Aug 9 from Saint Martin to Washington, returning Sun, Aug 17, priced at $381 found 4 hours ago
Frontier Airlines
Mon, Aug 11 - Sun, Aug 17
SXM
Saint Martin
IAD
Washington
$383 Roundtrip, found 4 hours ago
$383
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Mon, Aug 11 from Saint Martin to Washington, returning Sun, Aug 17, priced at $383 found 4 hours ago
Frontier Airlines
Sat, Aug 9 - Fri, Aug 15
SXM
Saint Martin
IAD
Washington
$389 Roundtrip, found 4 hours ago
$389
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, Aug 9 from Saint Martin to Washington, returning Fri, Aug 15, priced at $389 found 4 hours ago
Frontier Airlines
Mon, Aug 11 - Fri, Aug 15
SXM
Saint Martin
IAD
Washington
$391 Roundtrip, found 4 hours ago
$391
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Mon, Aug 11 from Saint Martin to Washington, returning Fri, Aug 15, priced at $391 found 4 hours ago
Frontier Airlines
Fri, May 23 - Sun, Jun 8
SXM
Saint Martin
IAD
Washington
$401 Roundtrip, found 1 day ago
$401
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, May 23 from Saint Martin to Washington, returning Sun, Jun 8, priced at $401 found 1 day ago
United
Wed, Jun 4 - Sun, Jun 8
SXM
Saint Martin
IAD
Washington
$501 Roundtrip, found 2 days ago
$501
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jun 4 from Saint Martin to Washington, returning Sun, Jun 8, priced at $501 found 2 days ago
American Airlines
Wed, Jun 4 - Tue, Jun 10
SXM
Saint Martin
IAD
Washington
$547 Roundtrip, found 7 hours ago
$547
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Wed, Jun 4 from Saint Martin to Washington, returning Tue, Jun 10, priced at $547 found 7 hours ago
Delta
Wed, Jun 4 - Tue, Jun 10
SXM
Saint Martin
IAD
Washington
$547 Roundtrip, found 7 hours ago
$547
Roundtrip
found 7 hours ago
Select Delta flight, departing Wed, Jun 4 from Saint Martin to Washington, returning Tue, Jun 10, priced at $547 found 7 hours ago
Copa
Wed, Jun 4 - Tue, Jun 10
SXM
Saint Martin
IAD
Washington
$583 Roundtrip, found 7 hours ago
$583
Roundtrip
found 7 hours ago
Select Copa flight, departing Wed, Jun 4 from Saint Martin to Washington, returning Tue, Jun 10, priced at $583 found 7 hours ago
Flights from Philipsburg (SXM) to Washington (IAD)
Origin airport
Princess Juliana Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Air Canada, American Airlines, Copa, Delta, Frontier Airlines, United
Roundtrip price
$373
Distance
1681 mi

Philipsburg to Washington Flights

The cheapest times to fly from Philipsburg to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Philipsburg to Washington are during the month of August. You can find some of the cheapest flights from Philipsburg to Washington with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Philipsburg to Washington

Sunday is one of the best days to book for cheap flights from Philipsburg to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Philipsburg to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Philipsburg to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $223 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Philipsburg to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Philipsburg to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD) cost?
Discover the latest flight deals from SXM to IAD by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SXM to IAD?
The cheapest flights from SXM to IAD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD)?
Hop on a nonstop flight with United Airlines and head straight from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD).
What is the cheapest airline that flies from SXM to IAD?
Right now, the cheapest carrier offering one-way flights from SXM to IAD is United. You can take off on this route from $370. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SXM on June 7 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD)?
On average, Princess Juliana Intl. Airport (SXM) offers 2 direct flights to Washington Dulles Intl. Airport (IAD) each week. If you’re looking for more choice, take advantage of Expedia’s filters to search for flights with one or two stops. Squeeze in a visit to another location or simply break up your journey.
What are the most popular departure times for flights from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD)?
More travelers fly between SXM and IAD at 4 PM than at any other time. Rather go when it’s quieter? Pick a flight outside the busiest times and there’s a chance you’ll save on your fare as well.
What day of the week has the most flights from SXM to IAD?
If you depart on a Sunday, you’ll get the largest range of choices for flights from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD).
What is the earliest flight from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD)?
The first flight of the day taking off from Princess Juliana Intl. Airport (SXM) is at around 4:55PM UTC-4. Catch this flight and you’ll reach Washington Dulles Intl. Airport (IAD) at approximately 8:27PM UTC-5. The total flight duration is 4h 32m.
How long does it take to fly from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD)?
The average flight duration from SXM to IAD is 4 hours and 32 minutes, covering a total distance of 1,700 mi.
What airline has the least delays from SXM to IAD?
United Airlines has the best performance for on-time direct flights from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD), with an on-time score of 93%. Use the Expedia App to view your journey status before you head off and get real-time alerts about any trip changes.
What is the best time to fly from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD)?
Choose a flight from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Washington from Princess Juliana Intl. Airport (SXM)?
If you’re boarding a direct flight from Princess Juliana Intl. Airport (SXM) to Washington, Washington Dulles Intl. Airport (IAD) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD) last-minute?
Holding off until just before your departure to book your flight from SXM to IAD generally means paying more. Although you may find some last-minute deals, there’s no guarantee. Be flexible with your travel plans for a better chance of landing a bargain.
Is it cheaper to book a SXM to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking a SXM to IAD flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place will take the stress out of planning your trip. Simply pick your flights and choose from our extensive range of stays, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Princess Juliana Intl. Airport (SXM) to Washington Dulles Intl. Airport (IAD)?
Typically, you’re able to cancel or reschedule your SXM to IAD flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline’s guidelines and fees on flight changes, or if you want further details, visit our Customer Service portal.

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*Available to One Key members.