STT - IAD

$133 Find Cheap Flights from Saint Thomas Island to Washington Dulles Airport - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$270
Typical prices: $364-$646
American Airlines
Wed 12/19Fri 1/5
STT - IAD • 1 stop
Cheapest non-stop
$332
Typical prices: $364-$640
United Airlines
Tue 10/30Sat 11/3
STT - IAD • Non-stop
Nonstop flights
You can fly direct with United Airlines. Average duration is 4h 22m
Direct flights
+1
Direct flights
+1
When to travel
Cheapest • 47% price drop
Most popular
Good to know
+1
Good to know
+1
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We hope you love your trip to Washington, D.C. Dulles Intl Airport!
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Expert advice
Flight Deals

Cheap Flights from Saint Thomas Island to Dulles Intl (STT-IAD)

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

Recent round-trip flight deals from Saint Thomas Island to Dulles Intl

Sat, Dec 19 - Tue, Jan 5
American Airlines Logo
1:09 pm - 10:43 pmSTT  Saint Thomas Island Cyril E King-IAD Washington, D.C. Dulles Intl
10h 34m1 stop Miami
American Airlines Logo
6:00 am - 5:33 pmIAD  Washington, D.C. Dulles Intl-STT Saint Thomas Island Cyril E King
10h 33m1 stop Miami
$270American Airlines
Sat, Dec 19 - Tue, Jan 5
American Airlines Logo
3:03 pm - 10:43 pmSTT  Saint Thomas Island Cyril E King-IAD Washington, D.C. Dulles Intl
8h 40m1 stop Miami
American Airlines Logo
6:00 am - 5:33 pmIAD  Washington, D.C. Dulles Intl-STT Saint Thomas Island Cyril E King
10h 33m1 stop Miami
$290American Airlines
Fri, Oct 30 - Tue, Nov 3
United Airlines Logo
12:07 pm - 4:30 pmSTT  Saint Thomas Island Cyril E King-IAD Washington, D.C. Dulles Intl
4h 23mnonstop
United Airlines Logo
8:56 am - 1:56 pmIAD  Washington, D.C. Dulles Intl-STT Saint Thomas Island Cyril E King
4h 00mnonstop
$332United Airlines
Fri, Oct 30 - Tue, Nov 3
United Airlines Logo
2:00 pm - 10:25 pmSTT  Saint Thomas Island Cyril E King-IAD Washington, D.C. Dulles Intl
8h 25m1 stop Newark
United Airlines Logo
8:56 am - 1:56 pmIAD  Washington, D.C. Dulles Intl-STT Saint Thomas Island Cyril E King
4h 00mnonstop
$386United Airlines
Fri, Oct 30 - Tue, Nov 3
United Airlines Logo
12:07 pm - 4:30 pmSTT  Saint Thomas Island Cyril E King-IAD Washington, D.C. Dulles Intl
4h 23mnonstop
United Airlines Logo
8:56 am - 1:56 pmIAD  Washington, D.C. Dulles Intl-STT Saint Thomas Island Cyril E King
4h 00mnonstop
$391United Airlines
Fri, Oct 30 - Tue, Nov 3
United Airlines Logo
2:00 pm - 10:25 pmSTT  Saint Thomas Island Cyril E King-IAD Washington, D.C. Dulles Intl
8h 25m1 stop Newark
United Airlines Logo
8:56 am - 1:56 pmIAD  Washington, D.C. Dulles Intl-STT Saint Thomas Island Cyril E King
4h 00mnonstop
$418United Airlines
Mon, Nov 30 - Mon, Dec 7
American Airlines Logo
4:30 pm - 8:59 amSTT  Saint Thomas Island Cyril E King-IAD Washington, D.C. Dulles Intl
17h 29m1 stop Charlotte Douglas
American Airlines Logo
7:00 am - 3:38 pmIAD  Washington, D.C. Dulles Intl-STT Saint Thomas Island Cyril E King
7h 38m1 stop Charlotte Douglas
$562American Airlines
Sat, Dec 19 - Tue, Jan 5
American Airlines Logo
3:03 pm - 10:43 pmSTT  Saint Thomas Island Cyril E King-IAD Washington, D.C. Dulles Intl
8h 40m1 stop Miami
American Airlines Logo
3:22 pm - 2:38 pmIAD  Washington, D.C. Dulles Intl-STT Saint Thomas Island Cyril E King
22h 16m2 stops Charlotte Douglas New York John F Kennedy Intl
$589American Airlines
Sat, Dec 19 - Tue, Jan 5
American Airlines Logo
1:09 pm - 10:43 pmSTT  Saint Thomas Island Cyril E King-IAD Washington, D.C. Dulles Intl
10h 34m1 stop Miami
American Airlines Logo
3:22 pm - 2:38 pmIAD  Washington, D.C. Dulles Intl-STT Saint Thomas Island Cyril E King
22h 16m2 stops Charlotte Douglas New York John F Kennedy Intl
$600American Airlines
Fri, Oct 30 - Tue, Nov 3
Multiple Airlines Logo
1:46 pm - 12:30 amSTT  Saint Thomas Island Cyril E King-IAD Washington, D.C. Dulles Intl
10h 44m2 stops San Juan Luis Munoz Marin Intl Chicago O'Hare Intl
Multiple Airlines Logo
8:56 am - 1:56 pmIAD  Washington, D.C. Dulles Intl-STT Saint Thomas Island Cyril E King
4h 00mnonstop
$645Multiple Airlines
Booking Insights

Price, demand and travel trends for Saint Thomas Island to Washington, D.C. Dulles Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Saint Thomas Island to Washington, D.C. Dulles Intl Airport with more confidence.

How much is a round-trip flight from Saint Thomas Island to Washington, D.C. Dulles Intl Airport?

Round-trip flights from Saint Thomas Island to Washington, D.C. Dulles Intl Airport start at $270. Prices are below average for this route right now, with typical round-trip fares ranging from $364 to $646. The lowest price found in the past 5 days was $270 on American Airlines.

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

Sunday is the cheapest day of the week to fly from Saint Thomas Island to Washington, D.C. Dulles Intl Airport, it is 26% cheaper than the average day. Saturday is the most expensive day with flight prices 47% higher than average. Based on deals found by KAYAK users in the last 12 months.

Expert advice

Expert advice for your flight from Saint Thomas Island to Dulles Intl

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on STT

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Key details for Saint Thomas Island to Washington, D.C. Dulles Intl Airport flights

Low season

September

Cheapest flight

$133
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Saint Thomas Island to Washington, D.C. Dulles Intl Airport

When to book flights from Saint Thomas Island to Dulles Intl

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

Your Saint Thomas Island to Washington, D.C. Dulles Intl Airport flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

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

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

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

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

  • What airlines are available from Saint Thomas Island to Washington, D.C. Dulles Intl Airport?

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

  • Which airports can I use when flying from Saint Thomas Island to Washington, D.C. Dulles Intl Airport?

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

  • Which airlines include bags at no extra cost on Saint Thomas Island to Washington, D.C. Dulles Intl Airport 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

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

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

    Only Economy Class is available on flights from Saint Thomas Island to Washington, D.C. Dulles Intl Airport.

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

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $342 round-trip via Charlotte Douglas (CLT), compared to $491 for nonstop.

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

    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.

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

    The Boeing 737 MAX 8 family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Boeing 757 variants.

  • Which airports do connecting flights from Saint Thomas Island to Washington, D.C. Dulles Intl Airport pass through?

    Most connecting flights from Saint Thomas Island to Washington, D.C. Dulles Intl Airport pass through Charlotte Douglas (CLT), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

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

    On the Saint Thomas Island to Washington, D.C. Dulles Intl Airport route, being flexible with your departure day can save you up to 50%. Sunday is the cheapest day at $366 round-trip on average, while Saturday is the most expensive at $721: a $355 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How are flight departures from Saint Thomas Island to Washington, D.C. Dulles Intl Airport spread across the day?

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

  • What popular places can I visit in Washington, D.C. Dulles Intl Airport?

    Some of the most popular sights in Washington, D.C. Dulles Intl Airport are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. Dulles Intl Airport on KAYAK.

  • What are the earliest and latest flights from Saint Thomas Island to Washington, D.C. Dulles Intl Airport?

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

    • Earliest: departs at 12:07 pm and lands at 4:29 pm
    • Latest: departs at 5:25 pm and lands at 9:47 pm.

    The flight takes about 4h 22m.

  • How long is a flight from Saint Thomas Island to Washington, D.C. Dulles Intl Airport?

    A nonstop flight from Saint Thomas Island to Washington, D.C. Dulles Intl Airport takes 4h 22m, covering 1,608 miles.

  • Do I need a passport to fly from Saint Thomas Island to Washington, D.C. Dulles Intl Airport?

    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.

  • Have flight prices from Saint Thomas Island to Washington, D.C. Dulles Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $270 to $1,650. That means the highest observed fare was about 6x higher than the lowest one.

  • How are flight prices from Saint Thomas Island to Washington, D.C. Dulles Intl Airport looking right now?

    One-way fares from Saint Thomas Island to Washington, D.C. Dulles Intl Airport are currently lower than usual. Average one-way flight prices are about $162, which is 52% below the typical average for this route.

  • What car rental options are available at Washington, D.C. Dulles Intl Airport (IAD)?

    Washington, D.C. Dulles Intl Airport (IAD) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include:
    • Dollar
    • Budget
    • Hertz
    • Sixt
    • Thrifty

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

    Round-trip flights from Saint Thomas Island to Washington, D.C. Dulles Intl Airport range from $364 to $646, with an average of $490 over the past 12 months. Anything below $364 counts as a good deal.

Your guide to booking Saint Thomas Island to Washington, D.C. Dulles Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Sunday departure instead of Saturday. On this route, Sunday flights average $366 - about $355 less than Saturday (49% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Saint Thomas Island to Washington, D.C. Dulles Intl Airport trip for May. Fares historically average $261 round-trip in that month - typically $1,045 less than the most expensive month, which is August (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 $342 round-trip on this route - about $149 less than direct flights (based on the last 12 months).

Prefer to fly direct from Saint Thomas Island to Washington Dulles Airport?

 
Find which airlines fly direct from Saint Thomas Island Cyril E King Airport to Washington, D.C. Dulles Intl Airport, which days they fly and book direct flights.

Direct departures

Saint Thomas Island Cyril E King 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

Direct returns

Washington, D.C. Dulles Intl to Saint Thomas Island Cyril E King

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 Saint Thomas Island to Dulles Intl

Complete your trip to Washington, D.C. with a hotel stay or car rental