San Diego

$75+ 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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
Apr 20 — Apr 271
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 15, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$119
(Booking.com)

One-way from

$78
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$306

Good round-trip deal

$110 or less

Good one-way deal

$104 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-San Diego flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San Diego flights.
From Washington to San Diego
One-way flight from Washington to San Diego
Highest demand for flights based on searches. 2% potential increase in price ($8 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Washington to San Diego.
Price to beat on a one-way flight from Washington to San Diego.

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 April 15, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/15. 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.
Tue 5/612:30 pmSEA - SAN
1 stop12h 12mSpirit Airlines
Sat 5/105:43 pmSAN - SEA
1 stop6h 27mSpirit Airlines
Deal found 4/15$113
This Booking.com deal was found by Cheapflights users on 4/14. 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 5/307:30 amBLI - SAN
Nonstop2h 50mAllegiant Air
Fri 6/611:11 amSAN - BLI
Nonstop2h 58mAllegiant Air
Deal found 4/14$119
This Mytrip deal was found by Cheapflights users on 4/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/307:30 amBLI - SAN
Nonstop2h 50mMultiple Airlines
Fri 6/68:08 amSAN - BLI
1 stop15h 24mMultiple Airlines
Deal found 4/14$145
This Expedia deal was found by Cheapflights users on 4/14. 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.
Thu 5/159:30 pmPDX - SAN
Nonstop2h 29mMultiple Airlines
Wed 5/216:15 amSAN - PDX
1 stop10h 30mMultiple Airlines
Deal found 4/14$156
This Delta deal was found by Cheapflights users on 4/15. 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 5/1711:30 amSEA - SAN
Nonstop2h 52mDelta
Wed 5/213:17 pmSAN - SEA
Nonstop3h 14mDelta
Deal found 4/15$157
This Booking.com deal was found by Cheapflights users on 4/14. 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.
Thu 5/17:01 pmPDX - SAN
1 stop5h 41mSpirit Airlines
Tue 5/66:15 amSAN - PDX
1 stop7h 22mSpirit Airlines
Deal found 4/14$159
This FlightHub deal was found by Cheapflights users on 4/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/173:20 pmSEA - SAN
1 stop4h 33mMultiple Airlines
Tue 5/201:23 pmSAN - SEA
1 stop10h 26mMultiple Airlines
Deal found 4/15$165
This Hawaiian Airlines deal was found by Cheapflights users on 4/15. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1712:44 pmSEA - SAN
1 stop5h 57mHawaiian Airlines
Wed 5/217:15 amSAN - SEA
Nonstop3h 09mHawaiian Airlines
Deal found 4/15$167
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 5/117:00 amPAE - SAN
Nonstop2h 45mAlaska Airlines
Tue 5/137:55 pmSAN - PAE
Nonstop3h 02mAlaska Airlines
Deal found 4/14$167
This flugladen.de deal was found by Cheapflights users on 4/15. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/109:50 amSEA - SAN
1 stop6h 38mAlaska Airlines
Sun 5/116:15 amSAN - SEA
Nonstop3h 08mAlaska Airlines
Deal found 4/15$170
This Hawaiian Airlines deal was found by Cheapflights users on 4/14. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/710:30 amPDX - SAN
Nonstop2h 25mHawaiian Airlines
Sat 5/108:44 pmSAN - PDX
Nonstop2h 43mHawaiian Airlines
Deal found 4/14$177
This Frontier deal was found by Cheapflights users on 4/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/269:35 pmSEA - SAN
1 stop9h 49mFrontier
Tue 4/291:10 pmSAN - SEA
1 stop11h 34mFrontier
Deal found 4/15$178

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 April 15, 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

Tue 5/6

12:30 pm-12:42 am

1 stop12h 12m

San Diego

Sat 5/10

5:43 pm-12:10 am

1 stop6h 27m

$113

BellinghamSan Diego

BLI - SAN

BLISAN

Bellingham

Fri 5/30

7:30 am-10:20 am

Nonstop2h 50m

San Diego

Fri 6/6

11:11 am-2:09 pm

Nonstop2h 58m

$119

BellinghamSan Diego

BLI - SAN

BLISAN

Bellingham

Fri 5/30

7:30 am-10:20 am

Nonstop2h 50m

San Diego

Fri 6/6

8:08 am-11:32 pm

1 stop15h 24m

$145

PortlandSan Diego

PDX - SAN

PDXSAN

Portland

Thu 5/15

9:30 pm-11:59 pm

Nonstop2h 29m

San Diego

Tue 5/20

6:15 am-12:42 pm

1 stop6h 27m

$156

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 5/17

11:30 am-2:22 pm

Nonstop2h 52m

San Diego

Wed 5/21

3:17 pm-6:31 pm

Nonstop3h 14m

$157

PortlandSan Diego

PDX - SAN

PDXSAN

Portland

Thu 5/1

7:01 pm-12:42 am

1 stop5h 41m

San Diego

Tue 5/6

6:15 am-1:37 pm

1 stop7h 22m

$159

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 5/17

3:20 pm-7:53 pm

1 stop4h 33m

San Diego

Tue 5/20

1:23 pm-11:49 pm

1 stop10h 26m

$165

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 5/17

12:44 pm-6:41 pm

1 stop5h 57m

San Diego

Wed 5/21

7:15 am-10:24 am

Nonstop3h 09m

$167

EverettSan Diego

PAE - SAN

PAESAN

Everett Paine Field

Sun 5/11

7:00 am-9:45 am

Nonstop2h 45m

San Diego

Tue 5/13

7:55 pm-10:57 pm

Nonstop3h 02m

$167

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 5/10

9:50 am-4:28 pm

1 stop6h 38m

San Diego

Sun 5/11

6:15 am-9:23 am

Nonstop3h 08m

$170

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 60 results
1
2
3
...
6

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, August is the cheapest month in which you can book a flight from State of Washington to San Diego (average of $286). Flying from State of Washington to San Diego in March is currently the most expensive (average of $366). 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 April 15, 2025.

When flying from State of Washington to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 April 15, 2025.

The most flights from USWA to SAN are scheduled on a Monday (53 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated April 15, 2025.
Read through reviews of airlines operating flights from Washington to San Diego, such as Alaska Airlines, Southwest and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
8.0
Very good

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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?

  • 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 Alaska Airlines ($79), Frontier ($79), and Spirit Airlines ($80).

  • What are the most popular routes from State of Washington to 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: China Airlines (97%), LATAM Airlines (97%), WestJet( 94%).

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

    On average you can expect to pay $377 for a flight from State of Washington to San Diego. The cheapest flight overall is $88 while the most popular route, (Seattle/Tacoma Intl - San Diego) is currently priced at $91.

  • 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, August is the cheapest month in which you can book a flight from State of Washington to San Diego (average of $286). Flying from State of Washington to San Diego in March is currently the most expensive (average of $366). 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 Washington?

Book flights to Washington if you plan to visit one of these locations
El Cajon
Chula Vista
Lemon Grove
National City
Imperial Beach
La Mesa
Alpine
Poway
Santee
Coronado
Borrego Springs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$79Average$162FlexibilityNo cancel feeOn-time65%
FrontierCheapest$100Average$202FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$110Average$160FlexibilityNo cancel feeOn-time88%
DeltaCheapest$117Average$279FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$125Average$295FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$141Average$398FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$156Average$378FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$173Average$386FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$176Average$359FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.