Cheap Flights to St. Charles

View ₩71,600 flight on Wed, Jun 10, 2026Opens in a new window

Popular airlines

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to St. Charles?

Prices were available within the past 7 days and start at ₩71,600 for one-way flights and ₩246,600 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Jun 10 - Sun, Jun 14
BOS
Boston
DCA
Washington
₩246,600 Roundtrip, found 2 days ago
₩246,600
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jun 10 from Boston to Washington, returning Sun, Jun 14, priced at ₩246,600 found 2 days ago
American Airlines
Wed, May 27 - Wed, Jun 17
BOS
Boston
DCA
Washington
₩261,300 Roundtrip, found 1 day ago
₩261,300
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, May 27 from Boston to Washington, returning Wed, Jun 17, priced at ₩261,300 found 1 day ago
United
Tue, Jun 2 - Wed, Jun 3
BOS
Boston
DCA
Washington
₩327,900 Roundtrip, found 1 day ago
₩327,900
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jun 2 from Boston to Washington, returning Wed, Jun 3, priced at ₩327,900 found 1 day ago
Air Canada
Fri, Jun 12 - Mon, Jun 15
YQM
Moncton
DCA
Washington
₩751,000 Roundtrip, found 1 day ago
₩751,000
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Jun 12 from Moncton to Washington, returning Mon, Jun 15, priced at ₩751,000 found 1 day ago
Japan Airlines
Tue, Oct 20 - Sun, Oct 25
GMP
Seoul
DCA
Washington
₩2,125,400 Roundtrip, found 4 hours ago
₩2,125,400
Roundtrip
found 4 hours ago
Select Japan Airlines flight, departing Tue, Oct 20 from Seoul to Washington, returning Sun, Oct 25, priced at ₩2,125,400 found 4 hours ago

Find the cheapest month to fly from Columbus (CMH) to Baltimore (BWI)

March is typically the cheapest month to fly

From ₩182,616 - ₩591,291 per traveler.

Travel information

Destination airport
Ronald Reagan Washington National
Destination airport IATA code
DCA
Destination city name
Washington
Roundtrip price
₩246,600

Trending flights to St. Charles

Prices were available within the past 7 days and start at ₩71,600 for one-way flights and ₩246,600 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Sep 7 - Mon, Oct 26
ICN
Seoul
DCA
Washington
₩1,526,500 Roundtrip, found 6 days ago
₩1,526,500
Roundtrip
found 6 days ago
Select United flight, departing Mon, Sep 7 from Seoul to Washington, returning Mon, Oct 26, priced at ₩1,526,500 found 6 days ago
*Available to Expedia members.