Alaska AirlinesDepart07:02
Tue, Nov 10BWI → SAN
8h 58m · 1 stop
$157one way, per person
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- Cheapest fare
- $157
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 6h 38m
Alaska Airlines · Tue, Nov 10
from $157
Usually 1+ stop
3,650 km
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Cheapest month to fly from Washington to San Diego
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
Alaska Airlines
Frontier AirlinesDepart18:00
Thu, Nov 12DCA → SAN
6h 38m · 1 stop
$243one way, per person
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About flights from Washington to San Diego
Washington (WAS) and San Diego (SAN) are about 3,650 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 6h 38m. Over the next few months, one-way fares start from $157, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Washington to San Diego?
The cheapest one-way fare we've seen recently is $157 with Alaska Airlines, departing Tuesday, November 10, 2026.
What is the cheapest month to fly from Washington to San Diego?
November 2026 currently has the lowest fares, from $157 one way.
Are there direct flights from Washington to San Diego?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Washington to San Diego?
The quickest journey we've seen takes about 6h 38m. Washington and San Diego are around 3,650 km apart.
Which airlines fly from Washington to San Diego?
Recent fares on this route were with Alaska Airlines and Frontier Airlines.
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