Can I combine different airlines on the same trip?

Of course. We offer you the possibility of booking with more than 400 airlines so that you can find the cheapest fare or the most convenient combination: outbound flight with one airline and return flight with another.

Is lastminute.com a trustworthy travel brand?

In 1998, lastminute.com was one of the first online travel agencies. Currently, we are selling over 380,000 flights per year – and working hard on bringing travellers wherever they want to go.

What options are there if I have to change my flight?

lastminute.com offers flexibility services for purchase at the time of your booking. These services entitle you to change or cancel your flights without handling fee.**Flexibility services are available on selected flights only. Please read our T&Cs for more information.

I am afraid to lose my luggage, every time I fly. What can I do?

lastminute.com offers a range of baggage protection services, so that you are covered in case your luggage is delayed or lost.****Baggage protection services are available on selected flights only. Please read our T&Cs for more information.

How long does a flight take between Seattle and San Diego?

The flight from Seattle to San Diego has a duration of 2h 56m.

What are the cheapest flights from Seattle to San Diego?

The cheapest one-way flight costs £440 flying with JetBlue Airways and the cheapest return flight costs £800 with JetBlue Airways.

How many airports are there in the city of Seattle?

Seattle has 2 airport: SEA - All airports, Snohomish County Airport.

How many airports does San Diego have?

There are 1 airports in San Diego: San Diego International Airport

Which San Diego airport is the most central?

The most central airport is San Diego International Airport, 3.9km.

Cheap flights from Seattle to San Diego

Fly smart, spend less

Flights to San Diego from Seattle

Cheap flights from Seattle to San Diego from £440. Seattle (United States) - San Diego (United States) return flights from £800. From 01/10/2026 (Thursday) - 06/10/2026 (Tuesday). Check for the dates with the lowest prices and find the cheapest rates.

Round-trip flights from Seattle to San Diego

Cheapest round-trip flights from Seattle to San Diego

22 Oct - 26 Oct • 4 nights
07:40SEA
2h 55mDirect
10:35SAN
Southwest Airlines
18:00SAN
3h 5mDirect
21:05SEA
Southwest Airlines
from£147
22 Oct - 26 Oct • 4 nights
07:40SEA
2h 55mDirect
10:35SAN
Southwest Airlines
07:25SAN
3h 5mDirect
10:30SEA
Southwest Airlines
from£147
22 Oct - 26 Oct • 4 nights
15:55SEA
4h 10m1 stop
20:05SAN
Southwest Airlines
07:25SAN
3h 5mDirect
10:30SEA
Southwest Airlines
from£162
22 Oct - 26 Oct • 4 nights
15:55SEA
4h 10m1 stop
20:05SAN
Southwest Airlines
18:00SAN
3h 5mDirect
21:05SEA
Southwest Airlines
from£162
22 Oct - 26 Oct • 4 nights
07:40SEA
2h 55mDirect
10:35SAN
Southwest Airlines
18:00SAN
4h 35m1 stop
22:35SEA
Southwest Airlines
from£162
22 Oct - 26 Oct • 4 nights
17:10SEA
2h 50mDirect
20:00SAN
Southwest Airlines
18:00SAN
3h 5mDirect
21:05SEA
Southwest Airlines
from£186

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Direct flights from Seattle to San Diego

Book direct flights from Seattle to San Diego for a smooth journey.

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Flights from Seattle to San Diego one way

Find one-way flights from Seattle to San Diego at great prices.

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Seattle to San Diego flight information

DEPARTING FROM:

SEA - All airports, Snohomish County Airport

ARRIVING IN:

San Diego International Airport

AIRLINES:

Alaska Airlines, Delta Air Lines, Southwest Airlines

AVG FLIGHT TIME:

2h 56m

More information about flights to San Diego from Seattle

Information about flights from Seattle to San Diego

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Greetings! Welcome to the lastminute.com’s travel website for low cost flights. If you are looking for a low cost flight Seattle-San Diego , you are in the right place! Your are click away from confirming your flight Seattle-San Diego.

Once you have your flight Seattle-San Diego booked you can always use lastminute.com to organise the rest of your trip just the way you want it. lastminute.com allows you to book a hotel, car hire, tours and activities in San Diego.

lastminute.com selects from hundreds of flight deals Seattle-San Diego some of the best deals that month to save you time. Why not take advantage of the monthly flight offers and book now.

FAQs Seattle to San Diego flights

FAQs

Can I combine different airlines on the same trip?
Of course. We offer you the possibility of booking with more than 400 airlines so that you can find the cheapest fare or the most convenient combination: outbound flight with one airline and return flight with another.
Is lastminute.com a trustworthy travel brand?
In 1998, lastminute.com was one of the first online travel agencies. Currently, we are selling over 380,000 flights per year – and working hard on bringing travellers wherever they want to go.
What options are there if I have to change my flight?
lastminute.com offers flexibility services for purchase at the time of your booking. These services entitle you to change or cancel your flights without handling fee.*
*Flexibility services are available on selected flights only. Please read our T&Cs for more information.
I am afraid to lose my luggage, every time I fly. What can I do?
lastminute.com offers a range of baggage protection services, so that you are covered in case your luggage is delayed or lost.**
**Baggage protection services are available on selected flights only. Please read our T&Cs for more information.
How long does a flight take between Seattle and San Diego?
The flight from Seattle to San Diego has a duration of 2h 56m.
What are the cheapest flights from Seattle to San Diego?
The cheapest one-way flight costs £440 flying with JetBlue Airways and the cheapest return flight costs £800 with JetBlue Airways.
How many airports are there in the city of Seattle?
Seattle has 2 airport: SEA - All airports, Snohomish County Airport.
How many airports does San Diego have?
There are 1 airports in San Diego: San Diego International Airport
Which San Diego airport is the most central?
The most central airport is San Diego International Airport, 3.9km.