Cheap Flights to Sully from HK$690

View HK$690 flight on Tue, 26 Aug 2025Opens in a new window

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Cheap round-trip flights to Sully

Prices were available within the past 7 days and start at HK$690 for one-way flights and HK$1,262 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 21 May - Sun, 25 May
BOS
Boston
DCA
Washington
HK$1,262 Return, found 6 days ago
HK$1,262
Return
found 6 days ago
Select Delta flight, departing Wed, 21 May from Boston to Washington, returning Sun, 25 May, priced at HK$1,262 found 6 days ago
American Airlines
Wed, 21 May - Sun, 25 May
BOS
Boston
DCA
Washington
HK$1,498 Return, found 6 days ago
HK$1,498
Return
found 6 days ago
Select American Airlines flight, departing Wed, 21 May from Boston to Washington, returning Sun, 25 May, priced at HK$1,498 found 6 days ago
United
Thu, 29 May - Sat, 31 May
BOS
Boston
IAD
Washington
HK$1,767 Return, found 1 day ago
HK$1,767
Return
found 1 day ago
Select United flight, departing Thu, 29 May from Boston to Washington, returning Sat, 31 May, priced at HK$1,767 found 1 day ago
Porter Airlines
Wed, 14 May - Thu, 15 May
YTZ
Toronto
IAD
Washington
HK$1,780 Return, found 3 days ago
HK$1,780
Return
found 3 days ago
Select Porter Airlines flight, departing Wed, 14 May from Toronto to Washington, returning Thu, 15 May, priced at HK$1,780 found 3 days ago
Air Canada
Sat, 2 Aug - Mon, 4 Aug
YTZ
Toronto
DCA
Washington
HK$2,305 Return, found 1 day ago
HK$2,305
Return
found 1 day ago
Select Air Canada flight, departing Sat, 2 Aug from Toronto to Washington, returning Mon, 4 Aug, priced at HK$2,305 found 1 day ago

Frequently asked questions

How do I find cheap flights to Sully that have flexible change policies?
By using our neat “No change fee” filter, that’s how. Simply enter your travel dates, click the “Search” button, then tick the box below the “Flexible change policies” subheading (it’s on the left). Expedia makes it simple to find affordable, flexible flights to Sully.
Which airlines fly to Sully?
Wherever you’d love to travel in Sully and whenever you hope to leave, you’ll discover your ideal flight with one of these top airlines:

  • American Airlines - 7,501 flights to or near Sully each month, including 7,284 flights to Ronald Reagan Washington National Airport (DCA) and 216 flights to Washington Dulles Intl. Airport (IAD) per month.
  • United Airlines - 5,939 flights to or near Sully each month, including 5,146 flights to Washington Dulles Intl. Airport (IAD) and 793 flights to Ronald Reagan Washington National Airport (DCA) per month.
  • Delta Air Lines - 2,036 flights to or near Sully each month, including 1,516 flights to Ronald Reagan Washington National Airport (DCA) and 520 flights to Washington Dulles Intl. Airport (IAD) per month.

How can I find cheap tickets to Sully?
Book well ahead, consider nearby airports, avoid school holiday time — there are lots of ways! Another one is to use Expedia’s “flexible dates” feature. Find a Sully flight, then compare the cheapest prices for nearby dates. In the last seven days, the lowest price for a flight to Sully was HK$1,262.
How much is a flight to Sully?
One-way flights leaving Boston (BOS) sold for as little as HK$690 in the last seven days. During this time, the price of a return ticket to Sully varied between HK$1,262 and HK$6,557. If you spot a good deal, book as fast as you can — these prices don’t hang around.
What are the most popular airports to fly into in Sully?
Pack your suitcase and cruise into one of these busy Sully airports:

  • Ronald Reagan Washington National Airport (DCA) - 11,555 flights per month.
  • Washington Dulles Intl. Airport (IAD) - 6,533 flights per month.

When is the cheapest time to fly to Sully?
If you’d prefer to spend your hard-earned holiday dollars experiencing Sully rather than on getting there, take off early in the week. The most affordable day to fly is normally Tuesday, with Monday coming in second. With many folks travelling on the weekend, Saturday often has the most expensive airfares.
How much is a plane ticket to Sully?
In the last seven days, flights to Sully varied from HK$1,262 to HK$6,557.
What months are the cheapest to book a flight to Sully?
Snap up a ticket in February for the cheapest flights to Sully. The festive month of December is known as the most expensive time to buy a fare.
Flights to Sully information
Destination airport
Washington Dulles Intl.
Destination airport IATA code
IAD
Destination city name
Washington
Return price
HK$1,504

Trending flights to Sully

Prices were available within the past 7 days and start at HK$690 for one-way flights and HK$1,262 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air China
Fri, 13 Jun - Tue, 29 Jul
HKG
Hong Kong SAR
IAD
Washington
HK$6,557 Return, found 17 hours ago
HK$6,557
Return
found 17 hours ago
Select Air China flight, departing Fri, 13 Jun from Hong Kong SAR to Washington, returning Tue, 29 Jul, priced at HK$6,557 found 17 hours ago
*Available to Expedia members.