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$46+ Cheap flights from San Diego (SAN) to Washington

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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — SEA
Mar 26 — Apr 21
Thu 3/26
Thu 4/2
1 adult, Economy
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Cheap flight deals from San Diego to Washington

Cheapest flights from San Diego to Washington
Explore the most affordable flight options available from San Diego to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 24, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/24. 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.
Wed 4/297:24 pm
SAN
-
GEG
Nonstop2h 56m
Alaska Airlines
Tue 5/510:30 am
GEG
-
SAN
Nonstop2h 48m
Alaska Airlines
Deal found 2/24$91
This Alaska Airlines deal was found by Cheapflights users on 2/24. 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.
Thu 4/307:24 pm
SAN
-
GEG
Nonstop2h 56m
Alaska Airlines
Wed 5/610:30 am
GEG
-
SAN
Nonstop2h 48m
Alaska Airlines
Deal found 2/24$112
This SmartFares deal was found by Cheapflights users on 2/24. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/208:43 pm
SAN
-
SEA
Nonstop3h 16m
Hawaiian Airlines
Tue 3/3110:52 am
SEA
-
SAN
Nonstop2h 49m
Hawaiian Airlines
Deal found 2/24$113
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:25 am
SAN
-
SEA
1 stop27h 02m
Frontier
Tue 4/287:12 pm
SEA
-
SAN
1 stop24h 47m
Frontier
Deal found 2/24$114
This Delta deal was found by Cheapflights users on 2/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/241:40 pm
SAN
-
SEA
Nonstop3h 10m
Delta
Mon 5/42:50 pm
SEA
-
SAN
Nonstop2h 44m
Delta
Deal found 2/22$117
This Southwest deal was found by Cheapflights users on 2/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/244:30 pm
SAN
-
SEA
1 stop6h 40m
Southwest
Tue 3/311:25 pm
SEA
-
SAN
1 stop7h 50m
Southwest
Deal found 2/24$119
This eDestinos deal was found by Cheapflights users on 2/24. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:25 am
SAN
-
SEA
1 stop8h 40m
Frontier
Mon 5/47:12 pm
SEA
-
SAN
1 stop24h 52m
Frontier
Deal found 2/24$121
This Southwest deal was found by Cheapflights users on 2/20. 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.
Fri 4/36:30 pm
SAN
-
SEA
1 stop7h 10m
Southwest
Wed 4/89:20 am
SEA
-
SAN
2 stops8h 25m
Southwest
Deal found 2/20$122
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:25 am
SAN
-
SEA
1 stop27h 02m
Frontier
Mon 5/47:12 pm
SEA
-
SAN
1 stop24h 52m
Frontier
Deal found 2/22$123
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:54 pm
SAN
-
SEA
1 stop19h 20m
Frontier
Thu 4/910:05 pm
SEA
-
SAN
1 stop9h 16m
Frontier
Deal found 2/24$124
This Alaska Airlines deal was found by Cheapflights users on 2/24. 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.
Wed 4/292:23 pm
SAN
-
GEG
1 stop7h 08m
Alaska Airlines
Wed 5/610:30 am
GEG
-
SAN
Nonstop2h 48m
Alaska Airlines
Deal found 2/24$124
This Trip.com deal was found by Cheapflights users on 2/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:43 pm
SAN
-
SEA
Nonstop3h 16m
Hawaiian Airlines
Mon 4/139:16 am
SEA
-
SAN
1 stop6h 25m
Hawaiian Airlines
Deal found 2/20$125

Find flight deals from San Diego to Washington

Keep the following information in mind while searching for San Diego to Washington flight deals. Data was last updated February 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$91
(Alaska Airlines)

One-way from

$46
(Alaska Airlines)

Popular in

July

Cheapest in

January

Average price

$225

Good round-trip deal

$259 or less

Good one-way deal

$117 or less
Provider with most accurate pricing for San Diego-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Seattle/Tacoma Intl flights.
Search Deals
From San Diego to Washington
Search Deals
One-way flight from San Diego to Washington
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from San Diego to Washington.
Search Deals
Price to beat on a one-way flight from San Diego to Washington.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Washington 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 February 24, 2026.
Use the filters below to find and compare flights from San Diego to Washington that are best for you.

Fly from

San Diego

Fly to

Washington

Route

Depart

Return

Price

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Fri 5/1

2:15 pm-5:20 pm

Nonstop3h 05m

Seattle/Tacoma Intl

Mon 5/4

5:00 am-9:00 am

1 stop4h 00m

$157

San DiegoPortland

SAN - PDX

SANPDX

San Diego

Sat 3/21

9:07 pm-11:59 pm

Nonstop2h 52m

Portland

Fri 3/27

8:32 pm-11:05 pm

Nonstop2h 33m

$167

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Fri 4/24

6:34 pm-9:45 pm

Nonstop3h 11m

Seattle/Tacoma Intl

Mon 4/27

2:45 pm-9:00 pm

1 stop6h 15m

$167

San DiegoPortland

SAN - PDX

SANPDX

San Diego

Thu 4/2

10:40 am-4:43 pm

1 stop6h 03m

Portland

Wed 4/8

7:17 pm-11:48 pm

1 stop4h 31m

$174

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Thu 4/30

4:26 pm-11:29 pm

1 stop7h 03m

Seattle/Tacoma Intl

Sun 5/3

5:00 am-9:58 am

1 stop4h 58m

$177

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Fri 5/15

5:17 pm-8:28 pm

Nonstop3h 11m

Seattle/Tacoma Intl

Mon 5/18

9:00 am-11:51 am

Nonstop2h 51m

$187

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Sat 3/21

11:15 am-2:32 pm

Nonstop3h 17m

Seattle/Tacoma Intl

Sat 3/28

11:51 am-2:44 pm

Nonstop2h 53m

$197

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Fri 4/17

11:40 am-2:50 pm

Nonstop3h 10m

Seattle/Tacoma Intl

Sun 4/19

7:35 am-10:34 am

Nonstop2h 59m

$197

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Fri 3/27

7:30 pm-1:40 am

1 stop6h 10m

Seattle/Tacoma Intl

Tue 3/31

3:00 pm-9:10 pm

1 stop6h 10m

$205

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Wed 5/27

6:53 pm-9:45 pm

Nonstop2h 52m

Spokane

Sun 5/31

7:01 am-9:50 am

Nonstop2h 49m

$212

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Showing 1-10 of 60 results
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Best time to book a flight from San Diego to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from San Diego 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 San Diego to Washington

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

Currently, April is the cheapest month in which you can book a flight from San Diego to State of Washington (average of $48). Flying from San Diego to State of Washington in July is currently the most expensive (average of $125). 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 SAN to WA?

Find hourly flight availability from San Diego to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 24, 2026.

It’s optimal to fly from San Diego to State of Washington in the morning. By choosing this option you can save up to 18% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from San Diego to Washington. Price data was last updated on February 21, 2026.

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

Weekly flight availability from San Diego to State of Washington

Explore weekly flight availability from San Diego to Washington. 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 February 24, 2026.

The most flights from SAN to USWA are scheduled on a Monday (47 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (32 on average).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated February 24, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from San Diego to Washington to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,948 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,948 reviews
Alaska Airlines
8.0
Very good
11,948 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
8.0
Very good
4,300 reviews
Alaska Airlines
8.0
Very good
11,948 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,238 reviews
Alaska Airlines
8.0
Very good
11,948 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Hawaiian Airlines
7.8
Good
2,836 reviews
Alaska Airlines
8.0
Very good
11,948 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Frontier
5.7
Fair
3,043 reviews
Alaska Airlines
8.0
Very good
11,948 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Washington. 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 from for flights from San Diego to Washington?

    Located just 2.6 mi from the city center, San Diego (SAN) is the airport most travelers will use when flying to Washington from San Diego.

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

    This flight path from San Diego to Washington was viewed by 100 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Departing from San Diego to State of Washington will take you 3h 10m. Airlines will cover a distance of 1051 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airline one-way is Allegiant Air, with whom users have recently found tickets for as low as $45. However, be on the lookout for offers from Spirit Airlines and Delta, as they are both options that can get you from San Diego to State of Washington for a low price.

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

    Most travelers choose San Diego - Seattle/Tacoma Intl, San Diego - Portland or San Diego - Everett Paine Field when deciding on the best route from San Diego to State of Washington.

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

    No one likes to see their flight delayed. When booking a flight from San Diego to State of Washington consider choosing Icelandair (94%), Air France (92%) or KLM (91%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay $1,145 for a flight from San Diego to State of Washington. The cheapest flight overall is $99 while the most popular route, (San Diego - Seattle/Tacoma Intl) is currently priced at $117.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Diego to Washington 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 San Diego to State of Washington?

    Currently, April is the cheapest month in which you can book a flight from San Diego to State of Washington (average of $48). Flying from San Diego to State of Washington in July is currently the most expensive (average of $125). 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

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Alternative routes for San Diego to Washington

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Top 9 airlines flying from San Diego to Washington

Discover the top 9 airlines that operate flights from San Diego to Washington. 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 February 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$79Average$155FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$98Average$148FlexibilityNo cancel feeOn-time88%
FrontierCheapest$103Average$200FlexibilityNo cancel feeOn-time62%
DeltaCheapest$119Average$298FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$128Average$341FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$139Average$391FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$156Average$289FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$192Average$362FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$225Average$431FlexibilityNo cancel feeOn-time71%

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