Washington to Boston DCA, IAD → BOS
Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) → Logan International Airport (BOS)
The cheapest return found recently is $312 with jetBlue, 30 Dec – 2 Jan 2027, found yesterday. The cheapest one-way found recently is $101 with jetBlue, 19 Nov, found 2 days ago.
Return
The cheapest return fare on each of 6 departure dates is usually $261 to $380.
Cheapest return found recently
$312
30 Dec – 2 Jan 2027 · jetBlue
Ronald Reagan National Airport (DCA) → Logan International Airport (BOS)
Leaves 8:19 p.m. · Return leaves 1:08 p.m. · 3 h 18 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Cheapest nonstop return
$312
30 Dec – 2 Jan 2027 · jetBlue
Ronald Reagan National Airport (DCA) → Logan International Airport (BOS)
Leaves 8:19 p.m. · Return leaves 1:08 p.m. · 3 h 18 min of travel, both ways together
out nonstop, back nonstop
found yesterday
Found recently, and the cheapest we hold
$312 30 Dec – 2 Jan 2027found yesterdaySee prices for these dates
$202 21 Oct – 22 Octfound 4 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $83 to $287.
At $312, the cheapest return found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 6 departure dates from 20 Oct to 30 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 3-night return fares leaving within 3 days of 30 Dec to compare.
Every date we hold
14 fares on 6 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 20 Oct – 22 Oct | $250 | jetBlue | Ronald Reagan National Airport (DCA) → Logan International Airport (BOS) | out nonstop, back nonstop | found 2 days ago | See prices for these dates |
| 21 Oct – 22 Oct | $202 | American Airlines | Ronald Reagan National Airport (DCA) → Logan International Airport (BOS) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
| 22 Oct – 23 Oct | $293 | jetBlue | Ronald Reagan National Airport (DCA) → Logan International Airport (BOS) | out nonstop, back 1 stop | found 4 days ago | See prices for these dates |
| 24 Nov – 29 Nov | $402 | Frontier Airlines | Washington Dulles International Airport (IAD) → Logan International Airport (BOS) | out 1 stop, back nonstop | found 6 days ago | See prices for these dates |
| 26 Nov – 29 Nov | $433 | jetBlue | Ronald Reagan National Airport (DCA) → Logan International Airport (BOS) | out 1 stop, back nonstop | found 5 days ago | See prices for these dates |
| 30 Dec – 2 Jan 2027 | $312 | jetBlue | Ronald Reagan National Airport (DCA) → Logan International Airport (BOS) | out nonstop, back nonstop | found yesterday | See prices for these dates |
Which month looks cheapest?
October 2026 is the cheapest month — from $202.
Airlines on the cheapest dates: jetBlue, American Airlines, Frontier Airlines.
One-way
The cheapest one-way fare on each of 5 departure dates is usually $95 to $104.
Cheapest one-way found recently
$101
19 Nov · jetBlue
Ronald Reagan National Airport (DCA) → Logan International Airport (BOS)
Leaves 6:00 a.m. · 4 h 35 min trip
1 stop
found 2 days ago
Cheapest nonstop one-way
$207
1 Nov · United Airlines
Washington Dulles International Airport (IAD) → Logan International Airport (BOS)
Leaves 8:40 a.m. · 1 h 39 min trip
nonstop
found 2 days ago
Found recently, and the cheapest we hold
$101 19 Novfound 2 days agoOpen this trip
$58 11 Novfound 4 days agoOpen this trip
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $51 to $61.
At $101, the cheapest one-way found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 5 departure dates from 22 Oct to 19 Nov, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 19 Nov to compare.
Every date we hold
7 fares on 5 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 22 Oct | $95 | jetBlue | Ronald Reagan National Airport (DCA) → Logan International Airport (BOS) | stops unknown | found 3 days ago | Open this trip |
| 25 Oct | $104 | American Airlines | Ronald Reagan National Airport (DCA) → Logan International Airport (BOS) | nonstop | found 4 days ago | Open this trip |
| 1 Nov | $202 | jetBlue | Ronald Reagan National Airport (DCA) → Logan International Airport (BOS) | 1 stop | found 2 days ago | Open this trip |
| 11 Nov | $58 | jetBlue | Ronald Reagan National Airport (DCA) → Logan International Airport (BOS) | nonstop | found 4 days ago | Open this trip |
| 19 Nov | $101 | jetBlue | Ronald Reagan National Airport (DCA) → Logan International Airport (BOS) | 1 stop | found 2 days ago | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $58.
Airlines on the cheapest dates: jetBlue, American Airlines.
Premium cabin fares from Washington to Boston
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 30 Dec – 2 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 19 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Washington to Boston?
Return
Fares 14 to 29 days before departure were typically 67% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $250 | $202 | +201% | 7 |
| 7–13 days | $287 | $287 | +246% | 8 |
| 14–29 days | $83 | $83 | Cheapest seen | 15 |
| 30–59 days | $116 | $109 | +40% | 21 |
| 180+ days | $247 | $247 | +198% | 8 |
One-way
Fares 60 to 89 days before departure were typically 46% lower than 0 to 6 days before departure.
From the cheapest one-way each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $101 | $88 | +84% | 17 |
| 7–13 days | $104 | $98 | +89% | 8 |
| 14–29 days | $58 | $53 | +6% | 25 |
| 30–59 days | $64 | $57 | +16% | 18 |
| 60–89 days | $55 | $51 | Cheapest seen | 24 |
| 90–179 days | $59 | $59 | +7% | 9 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Baltimore → Boston
57 km from Washington
$335
$23 more than flying from Washington
30 Dec – 2 Jan 2027 · BWI → BOS · out nonstop, back nonstop
found yesterday
Washington → Providence
66 km from Boston
$301
$11 less than flying to Boston
25 Nov – 28 Nov · IAD → PVD · out nonstop, back nonstop
found 5 days ago
Harrisburg → Boston
148 km from Washington
$454
$142 more than flying from Washington
24 Nov – 29 Nov · MDT → BOS · out nonstop, back nonstop
found 6 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Baltimore → Boston
57 km from Washington
$172
$71 more than flying from Washington
1 Nov · BWI → BOS · 1 stop
found 2 days ago
Lancaster → Boston
142 km from Washington
$396
$295 more than flying from Washington
24 Oct · LNS → BOS · 1 stop
found 5 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 30 Dec – 2 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work