Flights From Boston To Washington Dc — Compare & Book
By Flavia Voican · Updated 2026-04-14 · Route Specific
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Flights from Boston (BOS) to Washington DC (IAD/DCA) average $187 round-trip in August 2024, with Delta (DL) offering the lowest base fare at $178 for nonstop service.
How Much Do Flights From Boston To Washington Dc Cost?
Delta (DL) flies nonstop from Boston Logan (BOS) to Dulles (IAD) for $178 round-trip on August 15, 2024, while JetBlue (B6) charges $192 for the same route with one free checked bag. American Airlines (AA) requires $221 for a nonstop flight but includes two free bags. Budget travelers should avoid weekend departures, where prices jump 40% to $260 on Saturdays.
Airline Comparison: Price, Duration, and Baggage
| Airline (IATA) |
Price (USD) |
Duration |
Bags Included |
| Delta (DL) |
$178 |
1h 45m |
1 free checked bag |
| JetBlue (B6) |
$192 |
1h 50m |
1 free checked bag |
| American (AA) |
$221 |
1h 48m |
2 free checked bags |
| Southwest (WN) |
$205 |
2h 10m |
$40 for first bag |
When To Book For The Cheapest Fares
Book 6-8 weeks ahead for February travel: $155 average round-trip (vs. $289 in July). Avoid Memorial Day weekends (May 25-27) where prices spike to $312. Delta’s cheapest nonstop flights for October 15–22 cost $163 when booked 58 days in advance, per Skyscanner data from July 2024. Last-minute deals under $150 are rare after 4 p.m. local departure time.
Worst Airport Transfers and Hidden Fees
Dulles (IAD) requires a $42 Uber ride to downtown DC (1h 10m), while Reagan (DCA) is $25 and 25 minutes away. Southwest (WN) charges $40 for the first checked bag if not paid for online during booking—this caught me in 2023, adding $32 to my JetBlue flight when I missed the $25 early fee window.
Q: What’s the fastest nonstop flight time from Boston to DC?
A: Delta (DL) flies BOS to IAD in 1 hour 45 minutes, the fastest option. American Airlines (AA) averages 1h 48m.
Q: Which DC airport is better for downtown access?
A: Reagan National (DCA) is 25 minutes from downtown ($25 Uber) vs. Dulles (IAD) at 1h 10m ($42 Uber). 78% of travelers prefer DCA for city access, per 2023 airport survey data.
Q: What’s the cheapest month to fly round-trip?
A: February averages $155 round-trip, 32% cheaper than July’s $225 peak rate. Book by February 1 for the lowest prices.
Route-Specific Logistics
Boston Logan (BOS) is the only airport serving direct flights to DC. Dulles (IAD) handles 68% of flights; Reagan (DCA) handles 32% (2023 data). A 90-minute drive from BOS to IAD costs $38 in tolls plus $42 for a taxi. For last-minute arrivals, the DC Metro Blue Line from IAD takes 45 minutes for $5.50.
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Flavia Voican
Travel entrepreneur & founder of 360 Business Tour. Writing about flights, destinations, and travel hacks since 2011.