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$63+ 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 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
Dec 18 — Dec 251
Thu 12/18
Thu 12/25
1 adult, Economy
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Find 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 November 18, 2025.

This Booking.com deal was found by Cheapflights users on 11/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/123:40 pmSEA - SAN
1 stop8h 19mFrontier
Wed 12/176:34 amSAN - SEA
1 stop17h 36mFrontier
Deal found 11/18$131
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/612:48 pmSEA - SAN
1 stop11h 11mFrontier
Sun 12/143:18 pmSAN - SEA
1 stop18h 48mFrontier
Deal found 11/18$132
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/123:40 pmSEA - SAN
1 stop8h 19mFrontier
Mon 12/226:25 amSAN - SEA
1 stop30h 05mFrontier
Deal found 11/18$134
This Cheapflightsfares deal was found by Cheapflights users on 11/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/119:56 amSEA - SAN
Nonstop2h 51mAlaska Airlines
Sat 12/138:59 pmSAN - SEA
Nonstop3h 13mAlaska Airlines
Deal found 11/17$137
This CheapOair deal was found by Cheapflights users on 11/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/123:40 pmSEA - SAN
1 stop8h 19mFrontier
Sun 12/142:30 pmSAN - SEA
1 stop24h 15mFrontier
Deal found 11/18$138
This Delta deal was found by Cheapflights users on 11/18. 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.
Tue 12/99:50 amSEA - SAN
Nonstop2h 55mDelta
Thu 12/1111:05 amSAN - SEA
Nonstop3h 17mDelta
Deal found 11/18$139
This Expedia deal was found by Cheapflights users on 11/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/92:40 pmPAE - SAN
1 stop5h 38mMultiple Airlines
Mon 12/151:33 pmSAN - PAE
1 stop6h 14mMultiple Airlines
Deal found 11/17$139
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:48 pmSEA - SAN
1 stop6h 27mMultiple Airlines
Fri 12/128:59 pmSAN - SEA
Nonstop3h 13mMultiple Airlines
Deal found 11/18$141
This Kiwi.com deal was found by Cheapflights users on 11/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:48 pmSEA - SAN
1 stop6h 27mMultiple Airlines
Sat 12/138:59 pmSAN - SEA
Nonstop3h 13mMultiple Airlines
Deal found 11/17$142
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:45 amSEA - SAN
1 stop14h 11mMultiple Airlines
Sat 12/138:59 pmSAN - SEA
Nonstop3h 13mMultiple Airlines
Deal found 11/18$144
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/231:25 pmSEA - SAN
1 stop6h 59mFrontier
Mon 1/57:21 pmSAN - SEA
1 stop18h 37mFrontier
Deal found 11/18$145
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/712:48 pmSEA - SAN
1 stop6h 27mFrontier
Sat 12/136:25 amSAN - SEA
1 stop10h 11mFrontier
Deal found 11/18$146

Cheap 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 November 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$110
(CheapOair)

One-way from

$63
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$302

Good round-trip deal

$167 or less

Good one-way deal

$138 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. 7% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 November 18, 2025.
Use the filters below to find and compare flights from Washington to San Diego that are best for you.

Fly from

Washington

Fly to

San Diego

Route

Depart

Return

Price

EverettSan Diego

PAE - SAN

PAESAN

Everett Paine Field

Tue 1/6

7:00 am-9:52 am

Nonstop2h 52m

San Diego

Tue 1/13

12:50 pm-4:04 pm

Nonstop3h 14m

$117

EverettSan Diego

PAE - SAN

PAESAN

Everett Paine Field

Tue 2/10

9:40 am-12:30 pm

Nonstop2h 50m

San Diego

Sat 2/14

5:31 pm-8:46 pm

Nonstop3h 15m

$119

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 2/11

7:55 pm-10:42 pm

Nonstop2h 47m

San Diego

Mon 2/16

6:50 am-10:05 am

Nonstop3h 15m

$149

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Mon 1/12

6:05 am-12:48 pm

1 stop6h 43m

San Diego

Fri 1/16

5:35 pm-12:08 am

1 stop6h 33m

$157

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Thu 1/8

3:40 pm-8:43 pm

1 stop5h 03m

San Diego

Sun 1/11

1:45 pm-8:58 pm

1 stop7h 13m

$157

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 1/24

3:45 pm-7:57 pm

1 stop4h 12m

San Diego

Mon 1/26

6:15 am-9:28 am

Nonstop3h 13m

$157

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Thu 1/15

5:05 am-10:02 am

1 stop4h 57m

San Diego

Mon 1/19

7:00 am-3:00 pm

1 stop8h 00m

$157

EverettSan Diego

PAE - SAN

PAESAN

Everett Paine Field

Wed 2/25

8:46 am-11:40 am

Nonstop2h 54m

San Diego

Wed 3/4

5:31 pm-8:46 pm

Nonstop3h 15m

$159

SpokaneSan Diego

GEG - SAN

GEGSAN

Spokane

Mon 1/26

12:32 pm-4:59 pm

1 stop4h 27m

San Diego

Thu 1/29

7:27 pm-10:26 pm

Nonstop2h 59m

$167

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 1/9

2:59 pm-7:15 pm

1 stop4h 16m

San Diego

Mon 1/12

9:37 am-12:51 pm

Nonstop3h 14m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/17

Showing 1-10 of 60 results
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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, December is the cheapest month in which you can book a flight from State of Washington to San Diego (average of $46). Flying from State of Washington to San Diego in September is currently the most expensive (average of $102). 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 November 18, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 32% on flights from State of Washington to San Diego by exploring options for tickets in the evening.

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 October 27, 2024.

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

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 November 18, 2025.

The most flights from USWA to SAN are scheduled on a Monday (48 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 on average).

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 39 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 47m. Fly via Alaska Airlines, Delta, or Southwest to get the fastest option. The distance from State of Washington to San Diego is about 1051 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 ($73), Alaska Airlines ($78), and Southwest ($79).

  • 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: Air France (92%), Virgin Atlantic (89%), WestJet( 89%).

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

    On average you can expect to pay $388 for a flight from State of Washington to San Diego. The cheapest flight overall is $99 while the most popular route, (Seattle/Tacoma Intl - San Diego) is currently priced at $99.

  • 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, December is the cheapest month in which you can book a flight from State of Washington to San Diego (average of $46). Flying from State of Washington to San Diego in September is currently the most expensive (average of $102). 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
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
National City

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Alternative routes for Washington to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Washington to San Diego

Discover the top 9 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 November 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$71Average$156FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$100Average$180FlexibilityNo cancel feeOn-time88%
FrontierCheapest$104Average$211FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$119Average$333FlexibilityNo cancel feeOn-time85%
DeltaCheapest$132Average$285FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$147Average$388FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$156Average$283FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$192Average$378FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$207Average$379FlexibilityNo cancel feeOn-time69%

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