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Cheap flights from San Diego to Seattle from $43

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 Seattle departing on 8/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Spirit Airlines Logo
6:15 am - 4:25 pmSAN-SEA
10h 10m1 stop
Spirit Airlines Logo
5:30 pm - 11:06 pmSEA-SAN
5h 36m1 stop
$102Spirit Airlines
Find Deal
mar., jul. 22 - mar., jul. 29
Spirit Airlines Logo
6:15 am - 4:25 pmSAN-SEA
10h 10m1 stop
Spirit Airlines Logo
5:30 pm - 11:06 pmSEA-SAN
5h 36m1 stop
$104Spirit Airlines
Find Deal
mar., jul. 22 - mié., jul. 23
Frontier Logo
6:25 am - 2:40 pmSAN-SEA
8h 15m1 stop
Frontier Logo
3:25 pm - 11:03 pmSEA-SAN
7h 38m1 stop
$108Frontier
Find Deal
vie., ago. 22 - dom., ago. 24
Spirit Airlines Logo
6:15 am - 4:25 pmSAN-SEA
10h 10m1 stop
Spirit Airlines Logo
5:30 pm - 11:06 pmSEA-SAN
5h 36m1 stop
$109Spirit Airlines
Find Deal
mar., jul. 22 - sáb., ago. 2
Frontier Logo
6:25 am - 2:40 pmSAN-SEA
8h 15m1 stop
Frontier Logo
4:36 pm - 11:17 pmSEA-SAN
6h 41m1 stop
$122Frontier
Find Deal
dom., ago. 24 - jue., sep. 18
Frontier Logo
8:36 am - 5:38 pmSAN-SEA
9h 02m1 stop
Frontier Logo
5:00 pm - 11:04 pmSEA-SAN
6h 04m1 stop
$123Frontier
Find Deal
lun., oct. 13 - lun., oct. 20
 Logo
7:04 pm - 2:06 pmSAN-SEA
19h 02m1 stop
 Logo
5:30 pm - 11:06 pmSEA-SAN
5h 36m1 stop
jue., jul. 24 - mar., jul. 29
 Logo
7:04 pm - 2:06 pmSAN-SEA
19h 02m1 stop
 Logo
5:30 pm - 11:06 pmSEA-SAN
5h 36m1 stop
jue., jul. 31 - mié., ago. 6
Hawaiian Airlines Logo
5:51 pm - 8:50 pmSAN-SEA
2h 59mnonstop
Hawaiian Airlines Logo
7:00 am - 9:50 amSEA-SAN
2h 50mnonstop
$173Hawaiian Airlines
Find Deal
mar., ago. 12 - mar., ago. 19
Delta Logo
1:57 pm - 4:50 pmSAN-SEA
2h 53mnonstop
Delta Logo
7:59 pm - 10:51 pmSEA-SAN
2h 52mnonstop
$177Delta
Find Deal
sáb., ago. 23 - mié., ago. 27

Spirit Airlines flights from San Diego to Seattle

Our best Spirit Airlines deals on San Diego to Seattle flight tickets
Spirit Airlines
Jul 22
SAN6:15 amSan Diego
10h 10m
1 stop
SEA4:25 pmSeattle/Tacoma Intl
Jul 29
SEA5:30 pmSeattle/Tacoma Intl
5h 36m
1 stop
SAN11:06 pmSan Diego
Spirit Airlines
Jul 22
SAN6:15 amSan Diego
10h 10m
1 stop
SEA4:25 pmSeattle/Tacoma Intl
Jul 23
SEA5:30 pmSeattle/Tacoma Intl
5h 36m
1 stop
SAN11:06 pmSan Diego
Spirit Airlines
Jul 22
SAN6:15 amSan Diego
10h 10m
1 stop
SEA4:25 pmSeattle/Tacoma Intl
Aug 2
SEA5:30 pmSeattle/Tacoma Intl
5h 36m
1 stop
SAN11:06 pmSan Diego

Frontier flights from San Diego to Seattle

Our best Frontier deals on San Diego to Seattle flight tickets
Frontier
Aug 22
SAN6:25 amSan Diego
8h 15m
1 stop
SEA2:40 pmSeattle/Tacoma Intl
Aug 24
SEA3:25 pmSeattle/Tacoma Intl
7h 38m
1 stop
SAN11:03 pmSan Diego
Frontier
Aug 24
SAN6:25 amSan Diego
8h 15m
1 stop
SEA2:40 pmSeattle/Tacoma Intl
Sep 18
SEA4:36 pmSeattle/Tacoma Intl
6h 41m
1 stop
SAN11:17 pmSan Diego
Frontier
Oct 13
SAN8:36 amSan Diego
9h 02m
1 stop
SEA5:38 pmSeattle/Tacoma Intl
Oct 20
SEA5:00 pmSeattle/Tacoma Intl
6h 04m
1 stop
SAN11:04 pmSan Diego

See travel insights to Seattle from

How to get the cheapest flight ticket from San Diego to Seattle

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

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from San Diego to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $161. If you don’t want to visit Seattle in January, then you should wait until October to fly from San Diego, when ticket prices are also cheap, with an average price of $176.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from San Diego is on a Thursday. momondo users have found tickets for Thursday departures for as low as $329. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from San Diego because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $571.

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

Flying to Seattle from San Diego in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $325 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $414. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest San Diego to Seattle/Tacoma Intl flight route?

Fly from San Diego to Seattle/Tacoma Intl for the best San Diego - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $234 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from San Diego for as low as $199 on momondo.

What cabin class options are available on San Diego to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on San Diego to Seattle/Tacoma Intl 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 Seattle flights?

No. A direct flight is the cheapest option for a flight between San Diego to Seattle.

How have San Diego to Seattle flight prices changed over time?

As of July 2025, prices for San Diego to Seattle flights are approximately 15% cheaper when compared to flights at the same time last year.

When to book flights from San Diego to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from San Diego to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Diego to Seattle (SAN to SEA) flight deals and tips

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

Best Price Found

$43

Fastest flight time

2h 53m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from San Diego in the past 72 hours is $43. The best round-trip flight deal from San Diego to Seattle found on momondo in the last 72 hours is $102.
The fastest flight from San Diego to Seattle takes 2h 53m
Direct flights go from San Diego to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • How far is San Diego to Seattle/Tacoma Intl by plane?

    The straight-line distance from San Diego to Seattle/Tacoma Intl is 1063.7 mi. Typically, this will take 2h 53m by plane in normal conditions.

  • When did momondo last update prices for flights from San Diego Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from San Diego Airport to Seattle/Tacoma Intl Airport refresh daily.

  • How many operators does momondo search for flights from San Diego Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from San Diego Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Diego Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from San Diego to Seattle?

  • What is the most popular airline from San Diego to Seattle?


Best airlines flying from San Diego to Seattle

Compare and see reviews for airlines that fly from San Diego to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $74Free CancellationRating
6.3
8,094 reviews
Search Spirit Airlines flights
FrontierPriceFrom $99Free CancellationRating
5.9
3,284 reviews
Search Frontier flights
American AirlinesPriceFrom $113Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $117Free CancellationRating
8.0
7,983 reviews
Search Delta flights
Alaska AirlinesPriceFrom $135Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $160Free CancellationRating
7.8
2,545 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $196Free CancellationRating
8.0
4,270 reviews
Search Southwest flights
United AirlinesPriceFrom $228Free CancellationRating
7.4
8,861 reviews
Search United Airlines flights
  • Delta Flights From San Diego to Seattle

    Across 14 Delta flights from San Diego to Seattle this week, the average price was $233, with the best Delta deals starting from $117 round-trip. 7,983 users have rated Delta on momondo, with an average score of 8.0/10.

  • Alaska Airlines Flights From San Diego to Seattle

    Another popular option for San Diego to Seattle flights is Alaska Airlines (8.0/10, 10,000 ratings). Alaska Airlines flies from San Diego to Seattle around 34 times per week, with deals starting from $135 round-trip and rising to an average price of around $272.


Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Olympia
Renton
Federal Way
Kent
Lynnwood
Puyallup
Tukwila
Kirkland
Marysville
Lakewood
Fife
Shoreline
Centralia
Cle Elum
Westport
Redmond

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from San Diego.

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

Yes. momondo allows you to filter the results for San Diego to Seattle flights to just show those with flexible booking policies.

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

Once you have performed a search for San Diego to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Seattle 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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1 adult
mar. 7/8
mar. 7/15

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