What is the cheapest airline that flies from San Diego to Washington?

Southwest, Delta, and United Airlines are the most popular carriers operating from San Diego to Washington

How many flights depart from San Diego to State of Washington on average per day?

The number of flights available between San Diego and State of Washington is 34 per day as of June 2026. The most frequent departure time is 7:00AM, with 41% of daily flights leaving in the afternoon.

How many flights depart from San Diego to State of Washington on average per week?

238 flights are operational weekly from San Diego to State of Washington as of June 2026. The most popular departure day for this route is Mon, with 22% of flights per week taking off on this day.

What airlines fly to State of Washington?

Alaska Airlines, Delta and Frontier are the top three most popular airlines that fly to State of Washington from San Diego according to our data. Alaska Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 9 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from San Diego Airport to Washington?

Prices for flights from San Diego Airport to Washington refresh daily.

How many operators does momondo search for flights from San Diego Airport to Washington?

As of June 2026, there are 9 operators available to choose from for flights from San Diego Airport to Washington.

How old do you have to be to fly from San Diego Airport to Washington?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Diego Airport to Washington.

What documentation or ID do you need to fly to Washington?

The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$70 Cheap Flights from San Diego to Washington in 2026

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Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:22 pm - 11:07 pm

SAN

GEG

2h 45mnonstop

7:03 am - 9:54 am

GEG

SAN

2h 51mnonstop

$139Alaska Airlines

Wed, Aug 12 - Wed, Aug 19

8:59 pm - 11:53 pm

SAN

GEG

2h 54mnonstop

6:00 am - 8:59 am

GEG

SAN

2h 59mnonstop

$143Alaska Airlines

Wed, Sep 9 - Sun, Sep 13

7:59 pm - 10:49 pm

SAN

GEG

2h 50mnonstop

7:03 am - 9:54 am

GEG

SAN

2h 51mnonstop

$158Alaska Airlines

Sat, Aug 29 - Tue, Sep 1

5:30 pm - 10:05 pm

SAN

GEG

4h 35m

1 stop

10:55 am - 4:55 pm

GEG

SAN

6h 00m

1 stop

$159Southwest

Wed, Aug 12 - Wed, Aug 19

6:55 pm - 1:20 am

SAN

GEG

6h 25m

1 stop

6:05 pm - 11:05 pm

GEG

SAN

5h 00m

1 stop

$163Southwest

Fri, Jun 26 - Fri, Jul 3

1:34 pm - 4:30 pm

SAN

SEA

2h 56mnonstop

7:55 pm - 10:49 pm

SEA

SAN

2h 54mnonstop

$177Delta

Wed, Aug 19 - Sun, Aug 23

9:43 am - 10:35 am

SAN

SEA

24h 52m

1 stop

8:13 pm - 2:08 pm

SEA

SAN

17h 55m

1 stop

$179Frontier

Tue, Jun 30 - Tue, Jul 7

4:11 pm - 7:05 pm

SAN

SEA

2h 54mnonstop

7:15 am - 10:11 am

SEA

SAN

2h 56mnonstop

$180Delta

Fri, Sep 4 - Sun, Sep 6

5:00 pm - 9:56 pm

SAN

SEA

4h 56m

1 stop

6:57 am - 12:13 pm

SEA

SAN

5h 16m

1 stop

$183United Airlines

Thu, Nov 12 - Tue, Nov 17

7:41 pm - 12:50 am

SAN

PDX

5h 09m

1 stop

5:15 am - 9:59 am

PDX

SAN

4h 44m

1 stop

$189United Airlines

Wed, Jul 15 - Tue, Jul 21

Alaska Airlines flights from San Diego to State of Washington

Our best Alaska Airlines deals on San Diego to State of Washington flight tickets

Alaska Airlines

Aug 12

SAN8:22 pmSan Diego

2h 45m

GEG11:07 pmSpokane

Aug 19

GEG7:03 amSpokane

2h 51m

SAN9:54 amSan Diego

$139

Alaska Airlines

Sep 9

SAN8:59 pmSan Diego

2h 54m

GEG11:53 pmSpokane

Sep 13

GEG6:00 amSpokane

2h 59m

SAN8:59 amSan Diego

$143

Alaska Airlines

Aug 29

SAN7:59 pmSan Diego

2h 50m

GEG10:49 pmSpokane

Sep 1

GEG7:03 amSpokane

2h 51m

SAN9:54 amSan Diego

$158

Frontier flights from San Diego to State of Washington

Our best Frontier deals on San Diego to State of Washington flight tickets

Frontier

Jun 30

SAN9:43 amSan Diego

24h 52m

1 stop

SEA10:35 amSeattle/Tacoma Intl

Jul 7

SEA8:13 pmSeattle/Tacoma Intl

17h 55m

1 stop

SAN2:08 pmSan Diego

$179

Frontier

Jun 23

SAN9:43 amSan Diego

24h 52m

1 stop

SEA10:35 amSeattle/Tacoma Intl

Jul 3

SEA8:12 pmSeattle/Tacoma Intl

23h 22m

1 stop

SAN7:34 pmSan Diego

$191

Frontier

Jul 22

SAN3:03 pmSan Diego

19h 36m

1 stop

SEA10:39 amSeattle/Tacoma Intl

Jul 27

SEA8:53 pmSeattle/Tacoma Intl

17h 15m

1 stop

SAN2:08 pmSan Diego

$199

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Wed 8/12

8:22 pm-11:07 pm

Nonstop2h 45m

Spokane

Wed 8/19

7:03 am-9:54 am

Nonstop2h 51m

$139

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Wed 9/9

8:59 pm-11:53 pm

Nonstop2h 54m

Spokane

Sun 9/13

6:00 am-8:59 am

Nonstop2h 59m

$143

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Sat 8/29

7:59 pm-10:49 pm

Nonstop2h 50m

Spokane

Tue 9/1

7:03 am-9:54 am

Nonstop2h 51m

$158

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Wed 8/12

5:30 pm-10:05 pm

1 stop4h 35m

Spokane

Wed 8/19

10:55 am-4:55 pm

1 stop6h 00m

$159

San DiegoSpokane

SAN - GEG

SANGEG

San Diego

Fri 6/26

6:55 pm-1:20 am

1 stop6h 25m

Spokane

Fri 7/3

6:05 pm-11:05 pm

1 stop5h 00m

$163

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Wed 8/19

1:34 pm-4:30 pm

Nonstop2h 56m

Seattle/Tacoma Intl

Sun 8/23

7:55 pm-10:49 pm

Nonstop2h 54m

$177

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Tue 6/30

9:43 am-10:35 am

1 stop24h 52m

Seattle/Tacoma Intl

Tue 7/7

8:13 pm-2:08 pm

1 stop17h 55m

$179

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Fri 9/4

4:11 pm-7:05 pm

Nonstop2h 54m

Seattle/Tacoma Intl

Sun 9/6

7:15 am-10:11 am

Nonstop2h 56m

$180

San DiegoSeattle

SAN - SEA

SANSEA

San Diego

Thu 11/12

5:00 pm-9:56 pm

1 stop4h 56m

Seattle/Tacoma Intl

Tue 11/17

6:57 am-12:13 pm

1 stop5h 16m

$183

San DiegoPortland

SAN - PDX

SANPDX

San Diego

Wed 7/15

7:41 pm-12:50 am

1 stop5h 09m

Portland

Tue 7/21

5:15 am-9:59 am

1 stop4h 44m

$189

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from San Diego to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

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Other information

What is the cheapest month to fly to State of Washington?

The month of April is, on average, the cheapest month to fly to State of Washington from San Diego, with most prices found around $90. If you aren’t able to travel to State of Washington during the month of April, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $97.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from San Diego to State of Washington is on a Thursday. Travelers who choose to depart for State of Washington on a Thursday will often find tickets for as low as $322. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from San Diego to State of Washington for around $536.

What is the cheapest time of day to depart on your flight to State of Washington?

The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $336. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $397 on average. Flights to State of Washington from San Diego in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest San Diego to Washington flight route?

Fly from San Diego to Spokane for the best San Diego - Washington flight prices

How far in advance should I book a flight from San Diego to Washington?

You are more likely to see cheaper flights to State of Washington from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $252 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from San Diego for as low as $219 on momondo.

What cabin class options are available on San Diego to State of Washington flights?

There are 4 cabin classes available to choose from on San Diego to State of Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Diego to State of Washington flights?

No. A direct flight is the cheapest option for a flight between San Diego to State of Washington.

Cheap San Diego to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Diego to State of Washington

Best Price Found	$71
Fastest flight time	2h 25m
Direct flights	Every day
Airports in State of Washington	96 airports

The best one-way flight to State of Washington from San Diego in the past 72 hours is $71. The best round-trip flight deal from San Diego to State of Washington found on momondo in the last 72 hours is $206.

The fastest flight from San Diego to State of Washington takes 2h 25m

Direct flights go from San Diego to State of Washington every day.

There are 96 airports in State of Washington. From San Diego there are direct flights to Portland (PDX), Spokane (GEG).

Search flight deals

Frequently asked questions about flying from San Diego to Washington

When did momondo last update prices for flights from San Diego Airport to Washington?
Prices for flights from San Diego Airport to Washington refresh daily.
How many operators does momondo search for flights from San Diego Airport to Washington?
As of June 2026, there are 9 operators available to choose from for flights from San Diego Airport to Washington.
How old do you have to be to fly from San Diego Airport to Washington?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Diego Airport to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from San Diego to State of Washington?
Based on momondo bookings for flights between San Diego and State of Washington, the leading plane model is Boeing 737-800 Passenger/BBJ2 (winglets), making up 31.26% of the total bookings. Other popular models include Boeing 737-900 with 23.01%, Boeing 737 with 9.87%, and Boeing 737 MAX 8 with 6.23%.

Best airlines flying from San Diego to State of Washington

Compare and see reviews for airlines that fly from San Diego to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
Allegiant Air	PriceFrom $91	Free Cancellation	Rating 7.3 708 reviews	Search Allegiant Air flights
Delta	PriceFrom $104	Free Cancellation	Rating 7.9 8,406 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $105	Free Cancellation	Rating 7.8 2,833 reviews	Search Hawaiian Airlines flights
Frontier	PriceFrom $124	Free Cancellation	Rating 5.6 2,924 reviews	Search Frontier flights
Alaska Airlines	PriceFrom $137	Free Cancellation	Rating 7.9 12,443 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $149	Free Cancellation	Rating 8.0 4,257 reviews	Search Southwest flights
United Airlines	PriceFrom $151	Free Cancellation	Rating 7.4 9,769 reviews	Search United Airlines flights
American Airlines	PriceFrom $226	Free Cancellation	Rating 7.1 11,645 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from San Diego to Washington?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Diego to Washington for you.

Can I find flights from San Diego to Washington with flexible booking policies on momondo?

Yes. All flights to Washington from San Diego on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from San Diego to Washington?

momondo provides multiple filters to help you find the best flight to Washington from San Diego. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from San Diego to Washington right now. Can momondo alert me if prices change?

Price alerts on flights to Washington from San Diego are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Flights to Dallasfrom $56

Cheap flights from San Diego to Washington from $70

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Washington departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Alaska Airlines flights from San Diego to State of Washington

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Our best Frontier deals on San Diego to State of Washington flight tickets

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How to get the cheapest flight ticket from San Diego to State of Washington

What is the cheapest month to fly to State of Washington?

What is the cheapest day to depart on your flight to State of Washington?

What is the cheapest time of day to depart on your flight to State of Washington?

What is the cheapest San Diego to Washington flight route?

How far in advance should I book a flight from San Diego to Washington?

What cabin class options are available on San Diego to State of Washington flights?

Can stopping save me money on San Diego to State of Washington flights?

What is the cheapest airline that flies from San Diego to Washington?

What airlines fly to State of Washington?

How many flights depart from San Diego to State of Washington on average per day?

How many flights depart from San Diego to State of Washington on average per week?

Cheap San Diego to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Diego to State of Washington

Best Price Found

Fastest flight time

Direct flights

Airports in State of Washington

Frequently asked questions about flying from San Diego to Washington

Best airlines flying from San Diego to State of Washington

Compare and see reviews for airlines that fly from San Diego to State of Washington with momondo

Why use momondo?

An easier way to manage your State of Washington trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Washington

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