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$72+ Cheap flights from Washington to San Diego (SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
Aug 24 — Aug 311
Mon 8/24
Mon 8/31
1 adult, Economy
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Cheap flight deals from Washington to San Diego

Cheapest flights from Washington to San Diego
Explore the most affordable flight options available from Washington to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.

This Alaska Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/148:30 am
PAE
-
SAN
Nonstop2h 55m
Alaska Airlines
Tue 11/177:38 pm
SAN
-
PAE
Nonstop3h 17m
Alaska Airlines
Deal found 7/21$137
This Alaska Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:03 am
GEG
-
SAN
Nonstop2h 51m
Alaska Airlines
Sat 8/297:59 pm
SAN
-
GEG
Nonstop2h 50m
Alaska Airlines
Deal found 7/21$143
This Alaska Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/28:30 am
PAE
-
SAN
Nonstop2h 55m
Alaska Airlines
Tue 11/107:38 pm
SAN
-
PAE
Nonstop3h 17m
Alaska Airlines
Deal found 7/24$157
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/254:55 pm
GEG
-
SAN
1 stop4h 40m
Southwest
Tue 9/17:05 am
SAN
-
GEG
1 stop4h 45m
Southwest
Deal found 7/20$158
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:20 pm
GEG
-
SAN
Nonstop2h 40m
Southwest
Sun 8/306:20 am
SAN
-
GEG
1 stop9h 40m
Southwest
Deal found 7/20$159
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:55 am
GEG
-
SAN
1 stop5h 30m
Southwest
Sun 9/61:35 pm
SAN
-
GEG
Nonstop2h 35m
Southwest
Deal found 7/22$163
This Alaska Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/289:15 am
PDX
-
SAN
Nonstop2h 36m
Alaska Airlines
Mon 8/318:16 pm
SAN
-
PDX
Nonstop2h 39m
Alaska Airlines
Deal found 7/24$165
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/313:34 pm
PDX
-
SAN
1 stop7h 17m
Delta
Sat 11/73:00 pm
SAN
-
PDX
1 stop5h 53m
Delta
Deal found 7/24$167
This Alaska Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:30 am
PAE
-
SAN
Nonstop2h 55m
Alaska Airlines
Sat 11/77:38 pm
SAN
-
PAE
Nonstop3h 17m
Alaska Airlines
Deal found 7/24$167
This Southwest deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:45 am
GEG
-
SAN
2 stops6h 00m
Southwest
Fri 8/282:15 pm
SAN
-
GEG
Nonstop2h 40m
Southwest
Deal found 7/22$168
This Southwest deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:40 pm
PDX
-
SAN
1 stop4h 30m
Southwest
Mon 8/314:55 pm
SAN
-
PDX
Nonstop2h 25m
Southwest
Deal found 7/23$168
This Alaska Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:49 pm
PDX
-
SAN
Nonstop2h 33m
Alaska Airlines
Sat 11/79:02 am
SAN
-
PDX
1 stop4h 46m
Alaska Airlines
Deal found 7/23$169

Find flight deals from Washington to San Diego

Keep the following information in mind while searching for Washington to San Diego flight deals. Data was last updated July 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$143
(Alaska Airlines)

One-way from

$72
(Alaska Airlines)

Popular in

June

Cheapest in

January

Average price

$319

Good round-trip deal

$155 or less

Good one-way deal

$134 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San Diego flights.
Search Deals
From Washington to San Diego
Search Deals
One-way flight from Washington to San Diego
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Washington to San Diego.
Search Deals
Price to beat on a one-way flight from Washington to San Diego.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 25, 2026.
Use the filters below to find and compare flights from Washington to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Thu 9/3

7:03 am-9:54 am

Nonstop2h 51m

San Diego

Sat 9/5

7:59 pm-10:49 pm

Nonstop2h 50m

$143

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Tue 11/3

3:20 pm-7:40 pm

1 stop4h 20m

San Diego

Thu 11/5

2:25 pm-5:10 pm

Nonstop2h 45m

$153

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Tue 8/25

7:03 am-9:54 am

Nonstop2h 51m

San Diego

Sat 8/29

7:59 pm-10:49 pm

Nonstop2h 50m

$153

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Fri 8/21

12:20 pm-3:00 pm

Nonstop2h 40m

San Diego

Mon 8/24

2:15 pm-4:55 pm

Nonstop2h 40m

$153

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Sat 10/17

5:38 pm-10:51 pm

1 stop5h 13m

San Diego

Fri 10/23

6:57 pm-11:42 pm

1 stop4h 45m

$163

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Tue 8/18

10:55 am-4:55 pm

1 stop6h 00m

San Diego

Tue 8/25

7:00 am-1:05 pm

1 stop6h 05m

$163

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Sun 9/6

6:15 am-12:20 pm

1 stop6h 05m

San Diego

Fri 9/11

10:10 am-4:30 pm

1 stop6h 20m

$163

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Mon 8/17

5:30 am-12:15 pm

1 stop6h 45m

San Diego

Thu 8/20

2:15 pm-4:55 pm

Nonstop2h 40m

$163

PortlandSan Diego

PDX - SAN

PDXSAN

Portland

Tue 9/15

5:50 pm-10:33 pm

1 stop4h 43m

San Diego

Thu 9/17

7:00 am-11:46 am

1 stop4h 46m

$167

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Sun 8/16

5:15 am-10:11 am

1 stop4h 56m

San Diego

Mon 8/17

7:02 pm-11:59 pm

1 stop4h 57m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Washington to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to San Diego

What is the cheapest month to book a flight from State of Washington to San Diego?

Currently, January is the cheapest month in which you can book a flight from State of Washington to San Diego (average of $205). Flying from State of Washington to San Diego in July is currently the most expensive (average of $321). 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.

What is the cheapest time of day to fly from WA to SAN?

Find hourly flight availability from Washington to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 25, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 24% on flights from State of Washington to San Diego by exploring options for tickets in the evening.

Weekly flight availability from State of Washington to San Diego

Explore weekly flight availability from Washington to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 25, 2026.

The most flights from USWA to SAN are scheduled on a Friday (44 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

How much does it cost to fly round-trip from State of Washington to San Diego?

Airfare is below average for this route at the moment.
State of Washington to San Diego flights typically cost between $228 and $364 in August.
The cheapest round-trip price found within the last 5 days was $172 on Southwest (Aug 20-Aug 25).

How far ahead should I book a flight from State of Washington to San Diego?

To ensure you get the cheapest price possible for a flight from State of Washington to San Diego, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest day to fly from State of Washington to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Washington to San Diego. Price data was last updated on May 30, 2026.

Travelers seeking maximum savings on their State of Washington to San Diego flight should consider departing on Wednesday mornings when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Washington to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Diego from Washington?

    Most people fly into San Diego (SAN) if they book a flight to San Diego from Washington. San Diego is conveniently located just 2.6 mi from San Diego’s city center.

  • How popular is this State of Washington to San Diego flight route?

    Flights from Washington to San Diego have been viewed 55 times in the past calendar month.

  • How long is the flight from State of Washington to San Diego?

    There are many flights that can get you from State of Washington to San Diego in 2h 51m. Fly via Alaska Airlines, Southwest, or Delta to get the fastest option. The distance from State of Washington to San Diego is about 1028 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from State of Washington to San Diego one-way?

    The cheapest airlines for a one-way flight from State of Washington to San Diego are Frontier ($65), Southwest ($71), and Alaska Airlines ($71).

  • What are the most popular routes from State of Washington to San Diego?

    The most popular route from State of Washington to San Diego is Seattle/Tacoma Intl - San Diego. You may also consider Everett Paine Field - San Diego or Portland - San Diego.

  • What are the most reliable airlines from State of Washington to San Diego?

    Before booking your flight to San Diego from State of Washington, check out the most reliable airlines to get you to your destination on time: KLM (88%), Delta (86%), Korean Air( 85%).

  • What are the cheapest flights from State of Washington to San Diego?

    On average you can expect to pay $653 for a flight from State of Washington to San Diego. The cheapest flight overall is $101 while the most popular route, (Seattle/Tacoma Intl - San Diego) is currently priced at $147.

  • Can I find deals for flights from Washington to San Diego that include hotel bookings?

    Yes. In addition to deals on Washington to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to San Diego.

  • Can I find deals for business class flights from Washington to San Diego?

    Yes. Cheapflights offers flight deals from Washington to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to San Diego?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to San Diego (average of $205). Flying from State of Washington to San Diego in July is currently the most expensive (average of $321). 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.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
National City
Chula Vista
Poway
La Mesa
Coronado
Santee
San Ysidro
Julian
Lemon Grove

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Alternative routes for Washington to San Diego

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Top 7 airlines flying from Washington to San Diego

Discover the top 7 airlines that operate flights from Washington to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$87Average$223FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$98Average$288FlexibilityNo cancel feeOn-time85%
DeltaCheapest$115Average$301FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$123Average$288FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$123Average$380FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$178Average$351FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$227Average$350FlexibilityNo cancel feeOn-time71%

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