For a smooth departure from IAD, use the Aerotrain to quickly reach your concourse. Pay attention to signage for correct train direction.

Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $251 (Frontier) |
One-way from | $148 (Alaska Airlines) |
Popular in | December |
Cheapest in | October |
Average price | $524 |
Good round-trip deal | $313 or less |
Good one-way deal | $208 or less |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
dom. 2/8
5:26 pm-8:23 pm
Nonstop5h 57m
San Diego
mar. 2/17
9:28 am-5:27 pm
Nonstop4h 59m
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
mié. 2/18
5:54 pm-8:46 pm
Nonstop5h 52m
San Diego
dom. 2/22
10:15 pm-6:04 am
Nonstop4h 49m
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
mié. 1/7
5:26 pm-8:23 pm
Nonstop5h 57m
San Diego
lun. 1/12
9:10 am-5:04 pm
Nonstop4h 54m
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
lun. 1/12
5:26 pm-8:23 pm
Nonstop5h 57m
San Diego
sáb. 1/24
9:10 am-5:04 pm
Nonstop4h 54m
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
mié. 1/7
5:26 pm-8:23 pm
Nonstop5h 57m
San Diego
dom. 1/11
9:10 am-5:04 pm
Nonstop4h 54m
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
mié. 1/14
5:26 pm-8:23 pm
Nonstop5h 57m
San Diego
vie. 1/23
9:10 am-5:04 pm
Nonstop4h 54m
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
mié. 1/21
9:05 am-4:45 pm
2 stops10h 40m
San Diego
mié. 1/28
6:20 am-3:50 pm
1 stop6h 30m
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
vie. 1/9
6:04 pm-8:58 pm
1 stop29h 54m
San Diego
mar. 1/13
9:10 am-5:04 pm
Nonstop4h 54m
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
dom. 1/25
6:04 pm-8:58 pm
1 stop29h 54m
San Diego
sáb. 1/31
9:10 am-5:04 pm
Nonstop4h 54m
Washington, D.C.San Diego
IAD - SAN
IADSAN
Washington, D.C. Dulles Intl
vie. 2/27
7:05 am-11:03 pm
1 stop18h 58m
San Diego
mié. 3/4
9:28 am-5:27 pm
Nonstop4h 59m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars |
Booking 48 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to San Diego (average of $109). Flying from Washington, D.C. Dulles Intl Airport to San Diego in December is currently the most expensive (average of $289). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from Washington, D.C. Dulles Intl Airport to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 42% versus a flight at noon.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to San Diego flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Hannah,Aug 2025
SFO - SAN
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Hannah,Aug 2025
SFO - SAN
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Hannah,Aug 2025
SFO - SAN
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Hannah,Aug 2025
SFO - SAN
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Hannah,Aug 2025
SFO - SAN
Food
Boarding
Comfort
Overall
Entertainment
Crew
Reviews
Hannah,Aug 2025
SFO - SAN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$145 | Average$286 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$345 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$229 | Average$350 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$256 | Average$436 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$256 | Average$477 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$257 | Average$435 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$276 | Average$336 | FlexibilityNo cancel fee | On-timeN/A |