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$68+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
Jan 1 — Jan 81
Thu 1/1
Thu 1/8
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 December 2, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/1. 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.
Wed 12/311:25 pmSEA - SAN
1 stop10h 34mFrontier
Wed 1/73:29 pmSAN - SEA
1 stop19h 52mFrontier
Deal found 12/1$146
This Kiwi.com deal was found by Cheapflights users on 11/30. 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 12/211:25 pmSEA - SAN
1 stop6h 59mFrontier
Tue 12/236:25 amSAN - SEA
1 stop30h 05mFrontier
Deal found 11/30$147
This Kiwi.com deal was found by Cheapflights users on 12/1. 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 12/155:21 pmSEA - SAN
1 stop24h 32mFrontier
Thu 1/159:16 amSAN - SEA
1 stop10h 35mFrontier
Deal found 12/1$153
This Alaska Airlines deal was found by Cheapflights users on 12/1. 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.
Wed 12/317:55 pmSEA - SAN
Nonstop2h 50mAlaska Airlines
Wed 1/79:13 pmSAN - SEA
1 stop18h 07mAlaska Airlines
Deal found 12/1$164
This Expedia deal was found by Cheapflights users on 12/1. 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.
Wed 12/311:25 pmSEA - SAN
1 stop10h 34mMultiple Airlines
Tue 1/610:32 amSAN - SEA
1 stop4h 29mMultiple Airlines
Deal found 12/1$166
This Kiwi.com deal was found by Cheapflights users on 11/30. 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 12/211:25 pmSEA - SAN
1 stop6h 59mFrontier
Thu 12/2510:52 amSAN - SEA
1 stop27h 02mFrontier
Deal found 11/30$171
This Expedia deal was found by Cheapflights users on 12/1. 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.
Wed 12/311:25 pmSEA - SAN
1 stop10h 34mMultiple Airlines
Wed 1/710:30 amSAN - SEA
2 stops8h 13mMultiple Airlines
Deal found 12/1$172
This Kiwi.com deal was found by Cheapflights users on 11/30. 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 12/211:25 pmSEA - SAN
1 stop6h 59mFrontier
Wed 12/241:06 pmSAN - SEA
2 stops23h 24mFrontier
Deal found 11/30$176
This Alaska Airlines deal was found by Cheapflights users on 12/1. 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.
Wed 12/318:34 pmPDX - SAN
Nonstop2h 33mAlaska Airlines
Mon 1/56:50 amSAN - PDX
Nonstop2h 54mAlaska Airlines
Deal found 12/1$177
This Alaska Airlines deal was found by Cheapflights users on 12/1. 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.
Wed 12/318:34 pmPDX - SAN
Nonstop2h 33mAlaska Airlines
Thu 1/812:31 pmSAN - PDX
1 stop4h 07mAlaska Airlines
Deal found 12/1$180
This Kiwi.com deal was found by Cheapflights users on 12/1. 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 12/302:54 pmSEA - SAN
1 stop28h 21mMultiple Airlines
Tue 1/68:18 pmSAN - SEA
Nonstop3h 17mMultiple Airlines
Deal found 12/1$184
This Southwest deal was found by Cheapflights users on 12/2. 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 12/305:10 amPDX - SAN
1 stop5h 40mSouthwest
Tue 1/65:40 pmSAN - PDX
1 stop4h 50mSouthwest
Deal found 12/2$186

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 December 2, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$118
(Orbitz)

One-way from

$68
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$353

Good round-trip deal

$176 or less

Good one-way deal

$148 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. 6% potential increase in price ($19 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 December 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 December 2, 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

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 2/4

11:40 am-2:29 pm

Nonstop2h 49m

San Diego

Sun 2/8

7:00 am-10:15 am

Nonstop3h 15m

$119

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sun 2/1

11:40 am-2:29 pm

Nonstop2h 49m

San Diego

Sat 2/7

5:35 pm-8:48 pm

Nonstop3h 13m

$119

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 2/4

3:21 pm-6:00 pm

Nonstop2h 39m

San Diego

Sat 2/7

5:35 pm-8:48 pm

Nonstop3h 13m

$119

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 2/5

3:21 pm-6:00 pm

Nonstop2h 39m

San Diego

Mon 2/9

11:00 am-2:17 pm

Nonstop3h 17m

$119

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 1/15

2:00 pm-4:40 pm

Nonstop2h 40m

San Diego

Sun 1/18

1:45 pm-4:57 pm

Nonstop3h 12m

$119

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 1/9

7:10 am-10:02 am

Nonstop2h 52m

San Diego

Sun 1/11

1:45 pm-4:57 pm

Nonstop3h 12m

$119

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 1/9

7:10 am-10:02 am

Nonstop2h 52m

San Diego

Sat 1/10

11:00 am-2:15 pm

Nonstop3h 15m

$119

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 2/25

7:15 am-10:04 am

Nonstop2h 49m

San Diego

Wed 3/4

6:50 am-10:05 am

Nonstop3h 15m

$119

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 2/21

7:17 am-2:27 pm

1 stop7h 10m

San Diego

Sat 2/28

12:40 pm-7:16 pm

1 stop6h 36m

$128

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

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/30

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 December 2, 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 December 16, 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. Friday 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 December 2, 2025.

The most flights from USWA to SAN are scheduled on a Tuesday (47 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (16 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 37 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 49m. Fly via Delta, Alaska Airlines, or United Airlines 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 Spirit Airlines ($37), Allegiant Air ($45), and Frontier ($66).

  • 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 (85%), WestJet( 84%).

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

    On average you can expect to pay $478 for a flight from State of Washington to San Diego. The cheapest flight overall is $79 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
Julian
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 December 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$71Average$156FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$100Average$160FlexibilityNo cancel feeOn-time88%
FrontierCheapest$107Average$211FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$119Average$333FlexibilityNo cancel feeOn-time85%
DeltaCheapest$130Average$279FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$146Average$381FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$156Average$282FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$186Average$371FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$192Average$374FlexibilityNo cancel feeOn-time69%

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