Cheap flights from San Jose, California to Washington from $346 SJC → DCA, IAD
Norman Y. Mineta San Jose International Airport (SJC) → Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD)
The cheapest return found recently is $519 with United Airlines, 15 Dec – 21 Dec, found 2 days ago. The cheapest one-way found recently is $346 with Alaska Airlines, 20 Jun 2027, found 4 days ago.
- Cheapest one-way found recently
- $346, found 4 days ago
- Cheapest return found recently
- $519, 15 Dec to 21 Dec
- Usual return price
- $405 to $464
- Cheapest month to fly
- January 2027, return fares from $391 found in the last 7 days
Return
The cheapest return fare on each of 4 departure dates is usually $405 to $464.
Cheapest return found recently
$519
15 Dec – 21 Dec · United Airlines
Norman Y. Mineta San Jose International Airport (SJC) → Washington Dulles International Airport (IAD)
Leaves 8:45 a.m. · Return leaves 5:05 p.m. · 16 h 25 min of travel, both ways together
out 1 stop, back 1 stop
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$519 15 Dec – 21 Decfound 2 days agoSee prices for these dates
$391 4 Jan 2027 – 6 Jan 2027found 6 days agoSee prices for these dates
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $242 to $409.
At $519, the cheapest return found recently is above that range.
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 4 departure dates from 13 Nov to 4 Jan 2027, 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 6-night return fares leaving within 3 days of 15 Dec to compare.
Every date we hold
4 fares on 4 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 13 Nov – 18 Nov | $445 | Alaska Airlines | Norman Y. Mineta San Jose International Airport (SJC) → Washington Dulles International Airport (IAD) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 12 Dec – 12 Dec | $409 | Alaska Airlines | Norman Y. Mineta San Jose International Airport (SJC) → Ronald Reagan National Airport (DCA) | out 1 stop, back 2 stops | found 7 days ago | See prices for these dates |
| 15 Dec – 21 Dec | $519 | United Airlines | Norman Y. Mineta San Jose International Airport (SJC) → Washington Dulles International Airport (IAD) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 4 Jan 2027 – 6 Jan 2027 | $391 | United Airlines | Norman Y. Mineta San Jose International Airport (SJC) → Washington Dulles International Airport (IAD) | out 1 stop, back 2 stops | found 6 days ago | See prices for these dates |
Which month looks cheapest?
January 2027 is the cheapest month — from $391.
Airlines on the cheapest dates: Alaska Airlines, United Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$346
20 Jun 2027 · Alaska Airlines
Norman Y. Mineta San Jose International Airport (SJC) → Washington Dulles International Airport (IAD)
Leaves 7:05 a.m. · 8 h 56 min trip
1 stop
found 4 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$346 20 Jun 2027found 4 days agoOpen this trip
$220 11 Decfound 7 days agoOpen this trip
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $108 to $403.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 2 departure dates and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 20 Jun 2027 to compare.
Every date we hold
2 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 11 Dec | $220 | Alaska Airlines | Norman Y. Mineta San Jose International Airport (SJC) → Ronald Reagan National Airport (DCA) | 1 stop | found 7 days ago | Open this trip |
| 20 Jun 2027 | $346 | Alaska Airlines | Norman Y. Mineta San Jose International Airport (SJC) → Washington Dulles International Airport (IAD) | 1 stop | found 4 days ago | Open this trip |
Which month looks cheapest?
December 2026 is the cheapest month — from $220.
Airlines on the cheapest dates: Alaska Airlines.
Premium cabin fares from San Jose to Washington
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 15 Dec – 21 Dec in another cabin: Premium economy · Business · First
Today's prices for 20 Jun 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for San Jose to Washington?
Return
Fares 14 to 29 days before departure were typically 33% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (49 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 | $461 | $298 | +50% | 18 |
| 7–13 days | $432 | $298 | +41% | 21 |
| 14–29 days | $307 | $242 | Cheapest seen | 31 |
| 30–59 days | $357 | $259 | +16% | 24 |
| 60–89 days | $425 | $425 | +38% | 14 |
| 90–179 days | $382 | $342 | +24% | 8 |
One-way
Fares 30 to 59 days before departure were typically 11% lower than 0 to 6 days before departure.
From the cheapest one-way each day between 24 Sept and 11 Nov (49 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 | $173 | $139 | +12% | 21 |
| 7–13 days | $167 | $155 | +8% | 15 |
| 30–59 days | $154 | $154 | Cheapest seen | 14 |
| 60–89 days | $157 | $108 | +2% | 22 |
| 180+ days | $332 | $201 | +116% | 31 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
San Francisco → Washington
67 km from San Jose
$324
$195 less than flying from San Jose
15 Dec – 21 Dec · SFO → IAD · out 1 stop, back 1 stop
found 2 days ago
Sacramento → Washington
142 km from San Jose
$345
$174 less than flying from San Jose
30 Nov – 2 Dec · SMF → IAD · out 1 stop, back 1 stop
found 2 days ago
Oakland → Washington
61 km from San Jose
$1,127
$608 more than flying from San Jose
13 Nov – 18 Nov · OAK → DCA · out nonstop, back nonstop
found 7 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
San Jose → Baltimore
57 km from Washington
$131
$215 less than flying to Washington
14 Dec · SJC → BWI · 3 stops
found 7 days ago
San Francisco → Washington
67 km from San Jose
$359
$13 more than flying from San Jose
20 Jun 2027 · SFO → DCA · 1 stop
found 4 days ago
Oakland → Washington
61 km from San Jose
$416
$70 more than flying from San Jose
20 Jun 2027 · OAK → IAD · 1 stop
found 4 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 15 Dec – 21 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from San Jose to Washington?
The cheapest return found recently is $519 with United Airlines, 15 Dec to 21 Dec, found 2 days ago. The cheapest return we hold, of any age, is $391 with United Airlines, 4 Jan 2027 to 6 Jan 2027, found 6 days ago. The cheapest return fare on each of 4 departure dates is usually $405 to $464.
How much is a one-way flight from San Jose to Washington?
The cheapest one-way found recently is $346 with Alaska Airlines, 20 Jun 2027, found 4 days ago. The cheapest one-way we hold, of any age, is $220 with Alaska Airlines, 11 Dec, found 7 days ago.
What is the cheapest month to fly from San Jose to Washington?
January 2027 is the cheapest month for a return, from $391, 4 Jan 2027 to 6 Jan 2027, found 6 days ago. December 2026 is the cheapest month for a one-way, from $220, 11 Dec, found 7 days ago.
How far ahead should I book a flight from San Jose to Washington?
In 49 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 33% lower than 0 to 6 days before departure. One-way fares 30 to 59 days before departure were typically 11% lower than 0 to 6 days before departure.
How long is the flight from San Jose to Washington?
The cheapest one-way found recently, with Alaska Airlines on 20 Jun 2027, takes 8 h 56 min with 1 stop.
Which airlines have the cheapest flights from San Jose to Washington?
Between 13 Nov and 4 Jan 2027, Alaska Airlines has the cheapest return on 2 of the 4 departure dates we hold, and United Airlines on 2.
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