SAN - SEA

£80 Find Cheap Flights from San Diego to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to Seattle departing on 27/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Seattle, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 27% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest return fare
£129
Typical prices: £251-£147
Southwest
Sat 29/8Mon 31/8
SAN - SEA • 1 stop
Cheapest direct flights
£132
Typical prices: £247-£147
Delta
Sun 13/9Wed 23/9
SAN - SEA • Direct
Advice from real travellers
AI-powered summary based on content written by KAYAK users. AI can make mistakes.
At Seattle, request wheelchair assistance if long walks through the airport are difficult.
On Alaska, a seat upgrade can add comfort, and early boarding helps.
User tips
User tips
User tips
User tips
Direct flights
You can fly direct with Alaska Airlines, Delta, and Southwest. Average duration is 3h 03m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 91% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 62% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Diego to Seattle (SAN-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from San Diego to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from San Diego to Seattle

Sat, 29 Aug - Mon, 31 Aug
Southwest Logo
17:10 - 22:55
SAN
-
SEA
5h 45m
1 stop
Southwest Logo
17:50 - 20:45
SEA
-
SAN
2h 55mdirect
£129Southwest
Sat, 22 Aug - Wed, 2 Sep
Southwest Logo
16:40 - 19:35
SAN
-
SEA
2h 55mdirect
Southwest Logo
05:55 - 11:45
SEA
-
SAN
5h 50m
2 stops
£131Southwest
Wed, 19 Aug - Sun, 23 Aug
Delta Logo
16:11 - 19:05
SAN
-
SEA
2h 54mdirect
Delta Logo
07:15 - 10:11
SEA
-
SAN
2h 56mdirect
£132Delta
Thu, 27 Aug - Sun, 30 Aug
Alaska Airlines Logo
20:33 - 23:40
SAN
-
SEA
3h 07mdirect
Alaska Airlines Logo
20:51 - 23:46
SEA
-
SAN
2h 55mdirect
£134Alaska Airlines
Wed, 22 Jul - Tue, 11 Aug
Delta Logo
19:00 - 22:03
SAN
-
SEA
3h 03mdirect
Delta Logo
19:55 - 22:49
SEA
-
SAN
2h 54mdirect
£135Delta
Tue, 4 Aug - Wed, 12 Aug
Southwest Logo
17:30 - 23:25
SAN
-
SEA
5h 55m
1 stop
Southwest Logo
05:55 - 11:45
SEA
-
SAN
5h 50m
2 stops
£136Southwest
Tue, 13 Oct - Wed, 14 Oct
Alaska Airlines Logo
18:41 - 11:07
SAN
-
SEA
16h 26m
1 stop
Alaska Airlines Logo
14:59 - 17:52
SEA
-
SAN
2h 53mdirect
£137Alaska Airlines
Tue, 7 Jul - Tue, 21 Jul
Delta Logo
19:00 - 22:03
SAN
-
SEA
3h 03mdirect
Delta Logo
07:15 - 10:11
SEA
-
SAN
2h 56mdirect
£138Delta
Fri, 30 Oct - Sun, 1 Nov
United Airlines Logo
19:41 - 00:33
SAN
-
SEA
4h 52m
1 stop
United Airlines Logo
05:07 - 11:08
SEA
-
SAN
6h 01m
1 stop
£139United Airlines
Tue, 4 Aug - Wed, 12 Aug
Southwest Logo
16:10 - 21:45
SAN
-
SEA
5h 35m
2 stops
Southwest Logo
05:55 - 11:45
SEA
-
SAN
5h 50m
2 stops
£140Southwest
Booking Insights

KAYAK’s insights & trends for San Diego to Seattle flights

Get data-powered insights and trends into flights from San Diego to Seattle to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from San Diego to Seattle?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from San Diego to Seattle departing in August.

What’s the cheapest day of the week to fly from San Diego to Seattle?

The average price of all round-trip flights from San Diego to Seattle clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Seattle on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Wednesday is the most expensive day to fly from San Diego to Seattle. For your return ticket, we recommend flying on a Thursday and avoiding Fridays for the best deals.

What is the cheapest month to fly from San Diego to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Diego to Seattle is February, where tickets cost £147 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is £225 and £218 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Diego to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Diego to Seattle, you should book around 4 weeks before departure, which saves you about 62% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know - Cheap tickets from San Diego to Seattle

Low seasonJanuary
Cheapest flight£80
Best time to beat the crowds (22% less expensive on average)
Most popular time to fly (19% more expensive on average)
Flight from San Diego to Seattle

When to book flights from San Diego to Seattle

Are your dates flexible? Find out the best times to travel from San Diego to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from San Diego to Seattle: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from San Diego to Seattle 
MaryFlew with Alaska Airlines
SAN
-
SEA
Apr 2026
If any one has a hard time walking long distances automatically ask for wheelchair assistance the person helps guide you to your gate and there is a lot of walking
crd041678Flew with Alaska Airlines
SAN
-
SEA
Apr 2024
Arrive early. May want to pay for the upgrade to a better seat. Early boarding is best.

FAQs for booking flights from San Diego to Seattle

  • Are the lounges at the San Diego airport free?

    Not all lounges at the San Diego airport are free of charge to access. There is a main lounge at the airport that is free to access, but you will have to pay some extra cash for meals. Free Wi-Fi is available in all the lounges. Paid lounges include Alaska lounge, Delta lounge, and the Star Brass lounges, which charge an approximate fee of $1.59.

  • Are there charging stations at Seattle Airport?

    Yes, there are charging stations in most parts of the airport. You can purchase a power bank at the charging stations for approximately $15.90. You can charge your mobile devices using the seat power outlets found at the gate waiting bays.

  • Are there any hotels near the San Diego airport?

    Many hotels are available near the San Diego airport, including the Courtyard hotel, located approximately 1 mile away, which charges around $150 per night. The Wyndham hotel charges around $80 per night and is approximately 2 miles from the airport.

  • Is there free Wi-Fi at Seattle Airport?

    Yes, free Wi-Fi is available throughout the terminals. The signal strength will vary depending on the Terminal.

  • What is the cheapest flight from San Diego to Seattle?

    In the last 3 days, the lowest price for a flight from San Diego to Seattle was £80 for a one-way ticket and £129 for a return.

  • Which airlines offer Wi-Fi service onboard planes from San Diego to Seattle?

    All the following airlines offer inflight Wi-Fi service on the San Diego to Seattle flight route: Alaska Airlines, Delta, Lufthansa, United Airlines, Air Canada, American Airlines, and JetBlue.

  • Which aircraft models fly most regularly from San Diego to Seattle?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the San Diego to Seattle flight route.

  • On which days can I fly direct from San Diego to Seattle?

    There are direct flights from San Diego to Seattle on a daily basis.

  • How does KAYAK find such low prices on flights from San Diego to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Diego to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from San Diego is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Diego to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Seattle with an airline and back to San Diego with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from San Diego to Seattle

  • Looking for a cheap flight from Seattle to San Diego? 25% of our users found flights on this route for £180 or less round-trip.
  • San Diego airport, also known as Lindbergh Airport, is approximately 3 miles northwest of San Diego downtown, California. This airport is managed and operated by the San Diego county airport authority. The airport offers domestic and international flights.
  • The San Diego airport has a wide selection of parking lots: terminal 1 parking lots, terminal 2 parking lots, the parking plaza, curbside valet parking, long-term parking, and cellphone parking lots. For the first 10min, parking is free. You will have to pay approximately $1.59 for any extra 30min of parking. You will have to pay approximately $15.90 per day for the long-term parking lot and approximately $31.76 for the valet parking option.
  • It is easy to maneuver in and out of Seattle Airport due to the numerous transport options available. You can board the Seattle Streetcars, which will connect you to nearby cities. The fare is approximately $1.99 for an adult passenger. You can also reserve a bike before your arrival. The bikes have a maximum speed of 15mph, and you will only have to part with approximately $0.07 per ride minute. Rental cars and limousine transportation services are also available upon reservation.
  • San Diego has two main terminals, namely terminals 1 and 2. Terminal 1 is strictly reserved for domestic flights, while Terminal 2 is for international flights. Terminal 1 has two levels: ground floor level and mezzanine level. Lounges are located at the mezzanine level, while transportation service, check-in, and check-out areas are accessible from the ground floor level. Terminal 2 is divided into the ground floor level and the second level. Arrivals and departure areas are found on the ground floor, whereas all basic and social services are found on the second level.
  • Seattle Airport has nursing amenities to cater to young children and their parents. The nursing suites have comfortable seats, changing tables, sinks, and other amenities and are close to the Alaska lounge on the Mezzanine level. Nursing pods are also available for single use. You should ensure you carry all your belongings after leaving and that you don't exceed the allocated time.

Prefer to fly direct from San Diego to Seattle?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from San Diego to Seattle/Tacoma Intl.
Find which airlines fly direct from San Diego Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

San Diego to Seattle/Tacoma Intl

Monday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Tuesday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Wednesday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Thursday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Friday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Saturday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Sunday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to San Diego

Monday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Tuesday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Wednesday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Thursday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Friday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Saturday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

Sunday

Alaska Airlines,Delta,Southwest

Alaska Airlines,Delta, +1 more

See more direct flights

Everything you need to know for your flight from San Diego to Seattle

Information on your arrival and departure airports