Flights Boston → Washington
As of October 2026, economy flights from Boston to Washington have a typical range USD 264–487, median USD 362. Full range across all 270 offers: USD 133–630. We analyzed 270 offers from 7 airlines in a single price check.
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
Best offers by airline: Boston → Washington
Based on 270 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Boston → Washington
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| JetBlue | Included | — | — |
| Frontier | — | — | — |
| Southwest | Included | USD 90 | — |
| United Airlines | — | USD 80 | — |
| JetBlue | — | USD 98 | — |
| American Airlines | Included | USD 35 | — |
| Delta | Included | USD 35 | — |
Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.
How much do flights from Boston to Washington cost?
Based on 270 offers · October 2026
Boston to Washington flights ranged from USD 133 to USD 630 across 270 offers analyzed in October 2026. The chart below shows how prices distributed across all 270 offers.
These 270 offers (October 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between USD 342 and USD 382
What hidden fees do Boston to Washington flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Boston to Washington routes. The breakdown below is based on 270 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| B6 | 35 | 12% |
| F9 | 10 | 5% |
| WN | 77 | 19% |
| UA | 68 | 18% |
| JetBlue | 98 | 27% |
| AA | 45 | 12% |
| DL | 45 | 11% |
JetBlue: base ~USD 261 + fees USD 98 = ~USD 359 total. American Airlines: base ~USD 327 + fees USD 45 = ~USD 372 total.
JetBlue's USD 98 ancillary fees narrow the gap with American Airlines's lower-fee model — the USD 66 base difference shrinks to USD 13 after fees. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.JetBlue charges 9.8x more in ancillary fees than F9 on this route. Compare total-cost options when booking.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Boston to Washington?
7 airlines flew Boston to Washington in this dataset. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
Even on the cheapest airline (Frontier Airlines), fares ranged USD 193–194 in this snapshot. Your exact price depends on your dates and how far ahead you book — run a live search to see your number →
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 Frontier Airlines | 5 | 193–194 | 194 | 10 (5%) |
 B6 | 39 | 134–474 | 263 | 35 (13%) |
 JetBlue | 8 | 272–432 | 359 | 98 (27%) |
 United Airlines | 14 | 276–468 | 365 | 68 (19%) |
 Southwest Airlines | 62 | 272–580 | 370 | 77 (21%) |
 American Airlines | 113 | 342–381 | 372 | 45 (12%) |
 Delta Air Lines | 29 | 342–557 | 382 | 45 (12%) |
Where do the best Boston → Washington prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: Boston to Washington flights
- Full-service carriers on Boston–Washington cost 1.3x more than budget airlines (USD 373 vs USD 296 median; overall median USD 362).
- JetBlue charges 9.8x more in ancillary fees than F9 — USD 98 vs USD 10 avg per booking.
- The same route priced USD 360 apart depending on where it was booked — the lowest median was USD 181. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from Boston to Washington cost?
- Based on 270 offers analyzed, Boston to Washington flights range from USD 133 to USD 630, with a median price of USD 362. Search for your specific dates →
- What hidden fees should I expect on Boston to Washington flights?
- On average, ancillary fees (bags, seat selection) add USD 53 to the base fare on Boston to Washington flights. See itemized fees for your itinerary →
- Which airline is cheapest on Boston to Washington including all fees?
- Frontier Airlines has the lowest median fare on Boston to Washington at USD 194 (median across 5 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Boston–Washington flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was USD 181. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Boston to Washington routes?
- Boston to Washington has 7 airlines competing, creating a price range from USD 133 to USD 630 across 270 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
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