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Cheap flights San Diego — Washington

San Diego (SAN, US) Washington (WAS, US)
from $105 3 653 km ~4h 48m 13 flights found 4 airlines cheapest on Monday
Reverse route
How many travellers?
Adults
12+ years
1
Children
2–11 years
0
Infants
under 2
0
Choose your departure date
Cheapest: $105 on 07.12.2026
Prices shown are from searches by other travellers over the last 24 hours. Missing a date? Click any day — we'll find tickets anyway.
November 2026
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Su
December 2026
Mo
Tu
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Su
January 2027
Mo
Tu
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Prices found for 27 of 90 days. Prices update as more travellers search. Click any date to search live.
Depart
—
Return
—
Cheapest flights found
07 Dec 2026, Mon
Frontier Airlines F9 1466
19:57
SAN San Diego International Airport
03:16
BWI Baltimore/Wash International Thurgood Marshall Airport
7h 19m 2 stops
Kiwi.com
$105
View this ticket
07 Dec 2026, Mon
Frontier Airlines F9 2818
17:30
SAN San Diego International Airport
23:26
DCA Ronald Reagan National Airport
5h 56m 1 stop
Farera
$115
View this ticket
12 Jan 2027, Tue
Frontier Airlines F9 2818
17:36
SAN San Diego International Airport
23:30
DCA Ronald Reagan National Airport
5h 54m 1 stop
Trip.com
$132
View this ticket
01 Jan 2027, Fri
Frontier Airlines F9 1326
06:53
SAN San Diego International Airport
12:50
IAD Washington Dulles International Airport
5h 57m 1 stop
Farera
$139
View this ticket
07 Dec 2026, Mon
Southwest Airlines WN 3690
17:35
SAN San Diego International Airport
22:20
BWI Baltimore/Wash International Thurgood Marshall Airport
4h 45m Direct
City.Travel
$176
View this ticket
12 Jan 2027, Tue
Alaska Airlines AS 506
20:56
SAN San Diego International Airport
01:50
IAD Washington Dulles International Airport
4h 54m Direct
Trip.com
$189
View this ticket
Route characteristics
Distance
3 653 km
Flight time
4h 48m
Time difference
+3h
Minimum price
from $105 (07.12.2026)
Average price
$123
Maximum price
$139
Departures per week
1
Cheapest day
Monday
Departure airports (1)
SAN San Diego International Airport
Arrival airports (3)
BWI Baltimore/Wash International Thurgood Marshall Airport DCA Ronald Reagan National Airport IAD Washington Dulles International Airport
Airlines (4)
F9 Frontier Airlines AS Alaska Airlines WN Southwest Airlines UA United Airlines
Agencies (8)
Kiwi.com Farera Trip.com Flightnetwork City.Travel Wingie Tickets Wowtickets
Prices by day of week
Monday
$105
avg $132
Cheapest
Tuesday
$132
avg $161
Friday
$139
avg $139
Price trend by month
December 2026
from $105
avg $132
3 flights
January 2027
from $132
avg $153
3 flights
Airlines — cheapest prices 4
Frontier Airlines
Frontier Airlines
Low-cost 5 flights · 4 days
$105
Alaska Airlines
Alaska Airlines
6 flights · 5 days
$157
Southwest Airlines
Southwest Airlines
Low-cost 1 flights · 1 days
$176
United Airlines
United Airlines
1 flights · 1 days
$256
Where to buy tickets 8
Kiwi.com
2 tickets · 2 days
from $105
Farera
3 tickets · 3 days
from $115
Trip.com
2 tickets · 1 days
from $132
Flightnetwork
1 tickets · 1 days
from $158
City.Travel
1 tickets · 1 days
from $176
Wingie
1 tickets · 1 days
from $256
Tickets
1 tickets · 1 days
from $296
Wowtickets
2 tickets · 2 days
from $323
Airports

From — San Diego (1)

  • SAN San Diego International Airport

To — Washington (3)

  • BWI Baltimore/Wash International Thurgood Marshall Airport
  • DCA Ronald Reagan National Airport
  • IAD Washington Dulles International Airport
Other destinations from San Diego
Los Angeles
US · Hub
Dallas
US · Hub
Portland
US
Puerto Vallarta
MX
Seattle
US
Calgary
CA
Vancouver
CA
Fresno
US
Honolulu
US
Monterey
US
Kahului
US
San Jose Del Cabo
MX
Frequently asked questions about the route San Diego — Washington
How long is the flight from San Diego to Washington?
Approximate flight time — 4h 48m. This is an average for a direct flight. With connections, the time may be longer.
What is the distance from San Diego to Washington?
The straight-line distance — 3 653 km.
How much do flights from San Diego to Washington cost?
The minimum price over 3 months — from $105 on 07.12.2026.
What is the average ticket price?
The average price — $123. Range: $105 — $139.
What is the time difference between San Diego and Washington?
The difference — +3h.
From which airports does San Diego operate flights?
From San Diego: SAN (San Diego International Airport).
To which airports in Washington do flights arrive?
To Washington: BWI (Baltimore/Wash International Thurgood Marshall Airport), DCA (Ronald Reagan National Airport), IAD (Washington Dulles International Airport).
Which airlines fly this route?
This route is served by 4 airlines: Frontier Airlines, Alaska Airlines, Southwest Airlines, United Airlines.
Are there direct flights?
Yes, there are direct flights. Minimum direct price — from $176. Total direct flights found: 2.
Which day of the week is cheapest?
The cheapest day of the week — Monday.
When is the best time to buy tickets?
Optimal — 1–3 months before departure. Check the calendar above — it shows the best dates.
How do I book flights?
Click "View this ticket" on any flight card — you'll be redirected to the booking page with this specific ticket pre-selected.
About the route San Diego — Washington

Flights San Diego — Washington is a popular route. The straight-line distance is 3 653 km. Flight time 4h 48m. Time difference +3h.

From San Diego (SAN) flights depart from 1 airport: SAN. To Washington (WAS) — 3 arrival airports: BWI, DCA, IAD.

4 airlines operate on this route: Frontier Airlines, Alaska Airlines, Southwest Airlines, United Airlines.

The minimum price for the next 3 months — from $105 (07.12.2026). The cheapest dates are highlighted in the calendar above.

The average ticket price — $123, ranging from $105 to $139. Book 1–3 months in advance to get the best deals.

Cheapest day to fly — Monday.

Other destinations in United States from San Diego
Los Angeles
US
Dallas
US
Portland
US
Seattle
US
Fresno
US
Honolulu
US
Monterey
US
Kahului
US

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