Boston (BOS) – Washington (DCA)
- Distance
- 642 km
- 399 mi · 347 nm
- Flight time
- 1 h 48 min / 1 h 35 min
- Average gate to gate: BOS → DCA / back
- Time difference
- none
- CO2 per passenger
- 81 kg
- One way, economy, incl. RF (48 kg CO2 only)
- Passengers / year
- 1,458,538
- Aug 2025 – Jul 2026 · +3.2%
- Flights / week
- 336
- Both directions, average
- Seats filled
- 77%
- 1,886,335 seats a year
- Airlines nonstop
- 5
- B6, AA, YX
Traffic: U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service), Aug 2025 – Jul 2026. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources
The way there
- Heading from BOS
- 235°
- Heading from DCA
- 51°
- Halfway point
- 40.65, -74.10
- Great-circle km
- 641 km (sphere, for EU261)
- In the air BOS → DCA
- 1 h 17 min
- In the air DCA → BOS
- 1 h 5 min
- Clocks
- Same time in both
The estimate for a route without real times is 1 h 35 min; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Aug 2025 | 115,891 |
| Sep 2025 | 125,124 |
| Oct 2025 | 134,630 |
| Nov 2025 | 122,988 |
| Dec 2025 | 115,735 |
| Jan 2026 | 90,172 |
| Feb 2026 | 99,095 |
| Mar 2026 | 134,869 |
| Apr 2026 | 133,386 |
| May 2026 | 140,201 |
| Jun 2026 | 126,981 |
| Jul 2026 | 119,466 |
Show as a table
| Month | Flights |
|---|---|
| Aug 2025 | 1,456 |
| Sep 2025 | 1,491 |
| Oct 2025 | 1,512 |
| Nov 2025 | 1,420 |
| Dec 2025 | 1,363 |
| Jan 2026 | 1,368 |
| Feb 2026 | 1,333 |
| Mar 2026 | 1,571 |
| Apr 2026 | 1,559 |
| May 2026 | 1,575 |
| Jun 2026 | 1,461 |
| Jul 2026 | 1,367 |
Airlines flying BOS–DCA nonstop
| Airline | Flights / week | Share of passengers |
|---|---|---|
| B6JetBlue Airways | 97 | 36% |
| AAAmerican Airlines | 85 | 31% |
| YXRepublic Airline | 146 | 31% |
| MQEnvoy Air | 7.8 | 2% |
| DLDelta Air Lines | 0.3 | 0% |
Both directions, Aug 2025 – Jul 2026. Airlines with at least one flight a month. U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service). Sources
Aircraft on this route
- Embraer ERJ-175 · 7,990 flights
- A220-300 BD-500-1A11 · 4,342 flights
- Airbus Industrie A319 · 4,017 flights
- Boeing 737-800 · 384 flights
- Airbus Industrie A320-100/200 · 359 flights
- Embraer 190 · 339 flights
- Airbus Industrie A321Neoxlr · 27 flights
- Airbus Industrie A321-200n · 8 flights
Also carried: 8 tonnes of freight and 0 tonnes of mail a year (passenger and cargo flights).
Punctuality
- On time
- 72.4%
- Arrived within 15 min of schedule
- Average delay
- 22 min
- Late arrivals count, early ones as 0
- Cancelled
- 3.9%
- Flights counted
- 18,182
- Aug 2025 – Jul 2026
| Airline | On time | Average delay |
|---|---|---|
| YXRepublic Airline | 76.7% | 16 min |
| B6JetBlue Airways | 66.5% | 28 min |
| AAAmerican Airlines | 71.3% | 26 min |
| MQEnvoy Air | 77.5% | 17 min |
Delay minutes by cause: airline 20% · aircraft arriving late 45% · air traffic system 32% · weather 3% · security 0%.
Both directions, Aug 2025 – Jul 2026. BTS Reporting Carrier On-Time Performance (US domestic flights of the larger US airlines). Sources
What passengers paid
- Average fare, Q1 2026
- $170
- One way, all cabins
- Average over a year
- $180
- Q2 2025 – Q1 2026
- Largest airline
- JetBlue Airways
- 38% of passengers · $152
- Lowest-fare airline
- JetBlue Airways
- 38% of passengers · $152
History, not a price to book: what the average passenger paid per one-way trip in each quarter (Q2 2025 $193 · Q3 2025 $178 · Q4 2025 $176 · Q1 2026 $170).
Fare outlook, Q1 2027: about $173, likely $154–$198
The average fare paid we expect a year after Q1 2026, the newest DOT quarter. On this route, past forecasts made this way fell inside the range 81% of the time over 21 quarters (median error 6.3%). An estimate from US DOT data: not a price you can book, not a guarantee, not advice on when to buy. How the outlook works
Cheapest quarter on this route: Q1, typically 8% below the year's average (9 years of DOT data, without 2020–21).
U.S. DOT Consumer Airfare Report, Table 1a (airline ticket sample, US domestic airport pairs). Sources
Delay compensation (EU261 / UK261)
Measured by great-circle distance: 641 km.
Neither EU261 nor UK261 covers this route: it neither starts nor ends in the EU, EEA, Switzerland or the UK. Other countries have their own rules (for example Canada's APPR or Brazil's ANAC rules).
Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.
Every airport pair between Boston and Washington
Kilometres. Linked numbers have a page of their own. All Washington airports