Route guide · 1,052 miles
Cheap Flights from San Diego to Seattle
SAN → SEA · Nonstop 2h 38m · Live round-trip fares
If Seattle is next on your list, here's the honest picture on fares from San Diego. The trip covers about 1,052 miles and takes roughly 2h 38m in the air. Prices on this route reward planners: booking 3–6 weeks ahead is the sweet spot, and the lowest fares tend to sell out fast.
Live fares for SAN → SEA are updating. Use the search below for real-time prices.
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Updated daily
Flight time
2h 38m
Nonstop, typical
Distance
1,052 mi
SAN → SEA
Book ahead
3–6 weeks
Best window, typically
Nonstop airlines
3
American Airlines, Alaska Airlines & more
Nonstop flights from San Diego to Seattle
Nonstop flights from San Diego to Seattle are flown by American Airlines, Alaska Airlines, Delta Air Lines. The 1,052-mile trip takes about 2h 38m gate to gate, and nonstops are usually cheapest when booked 3–6 weeks ahead.
Booking insights: San Diego → Seattle
- Distance: 1,052 miles · nonstop flight time: 2h 38m.
- Fares tend to bottom out when you book about 3–6 weeks ahead — earlier than that rarely helps, later usually hurts.
- Tuesday and Wednesday departures usually undercut Friday and Sunday fares on routes like this one.
- A free fare alert beats daily checking: we watch this route and ping you when prices drop.
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Flying from San Diego to Seattle: what you need to know
The flight
The nonstop from SAN to SEA runs about 2h 38m over 1,052 miles. It's a comfortable mid-range flight: long enough that seat choice matters a little, short enough that paying up for extras rarely does.
Airlines on this route
American Airlines, Alaska Airlines and Delta Air Lines fly this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from San Diego (SAN)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our San Diego airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in Seattle (SEA)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The Seattle airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check Seattle to San Diego fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 1,052 miles, booking 3–6 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- Download the airline's app before you fly; gate changes and delays show up there first.
- Nonstop time on this route is about 2h 38m — a one-stop itinerary needs to be a lot cheaper to be worth the extra hours.
- Tuesday and Wednesday departures are typically the cheapest days on domestic routes.
- Screenshot your fare before you enquire — prices move, and a saved fare helps our team match or beat it.
- Flexible dates? Search a few days either side — one day can change the fare a lot.
San Diego to Seattle flight FAQs
How long is the flight from SAN to SEA?
A nonstop from SAN to SEA clocks in at around 2h 38m for the 1,052-mile trip. If you're connecting, budget an extra 2–4 hours depending on where you stop.
Are there nonstop flights from San Diego to Seattle?
American Airlines, Alaska Airlines, Delta Air Lines typically operate nonstop flights from SAN to SEA. Nonstops are usually cheapest when booked 3–6 weeks ahead of departure.
What is the cheapest month to fly from San Diego to Seattle?
Fares from San Diego to Seattle tend to ease outside the peak summer and holiday rush — the late-summer and early-fall shoulder weeks are usually kinder on the wallet. Set a free Airfare Deal alert and we'll flag the dips for your dates.
How much are last minute flights from SAN to SEA?
Book inside the final week and you'll usually pay a premium on SAN to SEA. Fares booked 3–6 weeks ahead are almost always kinder.
What is a good round-trip deal from San Diego to Seattle?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from San Diego to Seattle?
You'll mainly see American Airlines, Alaska Airlines, Delta Air Lines on San Diego to Seattle. Checking each against the live fares below is the surest way to find the lowest price for your dates.
How early should I get to San Diego airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
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