Cheap Flights to Adelphi from HK$3,393

View HK$3,393 flight on Tue, 23 Sep 2025Opens in a new window

Popular airlines

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Adelphi

Prices were available within the past 7 days and start at HK$3,393 for one-way flights and HK$4,841 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Wed, 19 Nov - Wed, 26 Nov
LHR
London
IAD
Washington
HK$4,841 Return, found 1 day ago
HK$4,841
Return
found 1 day ago
Select Scandinavian Airlines flight, departing Wed, 19 Nov from London to Washington, returning Wed, 26 Nov, priced at HK$4,841 found 1 day ago
Air Canada
Thu, 18 Sep - Sat, 11 Oct
LHR
London
DCA
Washington
HK$5,181 Return, found 1 day ago
HK$5,181
Return
found 1 day ago
Select Air Canada flight, departing Thu, 18 Sep from London to Washington, returning Sat, 11 Oct, priced at HK$5,181 found 1 day ago
American Airlines
Fri, 19 Sep - Sun, 28 Sep
LHR
London
IAD
Washington
HK$5,355 Return, found 5 hours ago
HK$5,355
Return
found 5 hours ago
Select American Airlines flight, departing Fri, 19 Sep from London to Washington, returning Sun, 28 Sep, priced at HK$5,355 found 5 hours ago
Delta
Wed, 19 Nov - Wed, 26 Nov
LHR
London
BWI
Baltimore
HK$5,414 Return, found 1 day ago
HK$5,414
Return
found 1 day ago
Select Delta flight, departing Wed, 19 Nov from London to Baltimore, returning Wed, 26 Nov, priced at HK$5,414 found 1 day ago
Etihad Airways
Thu, 18 Sep - Wed, 1 Oct
DEL
Delhi
IAD
Washington
HK$6,195 Return, found 4 days ago
HK$6,195
Return
found 4 days ago
Select Etihad Airways flight, departing Thu, 18 Sep from Delhi to Washington, returning Wed, 1 Oct, priced at HK$6,195 found 4 days ago

Find the cheapest month to fly from Columbus (CMH) to Washington (DCA)

November is typically the cheapest month to fly

From HK$769 - HK$4,955 per traveller.

Graph displaying average flight prices per month

Flights to Adelphi information
Destination airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport IATA code
BWI
Destination city name
Baltimore
Return price
HK$2,192

Trending flights to Adelphi

Prices were available within the past 7 days and start at HK$3,393 for one-way flights and HK$4,841 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 25 Sep - Tue, 30 Sep
HKG
Hong Kong SAR
IAD
Washington
HK$6,833 Return, found 1 day ago
HK$6,833
Return
found 1 day ago
Select United flight, departing Thu, 25 Sep from Hong Kong SAR to Washington, returning Tue, 30 Sep, priced at HK$6,833 found 1 day ago
*Available to Expedia members.