Flights Boston → Washington — September 21, 2026

One way · Economy · 1 adult · price per person

The cheapest flight observed for Monday, September 21, 2026 on the Boston–Washington route: American Airlines AA4047, from Boston Logan (BOS) to Washington Reagan National (DCA), departs 8:45 PM, arrives 10:43 PM, direct, 1h 58m, $178 per person. Fare as listed by Aviasales: carry-on bag included, checked bag not included, changes allowed for a fee, non-refundable. Price found in an Aviasales search on September 7, 2026 and read by AirSource on September 10, 2026, 20:47 UTC: it is not guaranteed and is confirmed on Aviasales at booking time.

Lowest price observed in the available data

American Airlines AA4047

Direct · Boston Logan (BOS) → Washington Reagan National (DCA)

Direct

8:45 PM

Mon, Sep 21

Boston Logan (BOS)

1h 58m

direct

10:43 PM

Mon, Sep 21

Washington Reagan National (DCA)

Airline: American Airlines (AA)
Flight: AA4047
Departure: Boston Logan (BOS) · September 21, 2026 · 8:45 PM local time (UTC-4)
Arrival: Washington Reagan National (DCA) · September 21, 2026 · 10:43 PM local time (UTC-4)
Stops: Direct (no plane change, as stated by the source; it can include a stop)
Duration: 1h 58m
Carry-on bag: included
Checked bag: not included
Changes: allowed for a fee
Refund: non-refundable
Last observed price: $178 per person, one way
Observed: Price and fare conditions found in an Aviasales search on September 7, 2026 · read by AirSource on September 10, 2026, 20:47 UTC · more than 48 hours ago

Looking for other times? All Boston–Washington flights on September 21, 2026 on Aviasales.

Lowest price observed in the available data

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