Is Delta cheaper than other airlines flying to Seattle?

With an average return price of $651, Delta is the most expensive airline flying into Seattle. The cheapest airline flying to Seattle is Frontier.

Which other airlines fly to Seattle?

Along with Delta, you can also fly to Seattle with Alaska Airlines, Alaska Airlines, American Airlines, Southwest and Frontier.

How much is a flight to Seattle with Delta?

On average, Delta flights to Seattle cost $713 for one-way and $651 return.

Which airport do Delta flights to Seattle fly into?

You’ll fly into Seattle/Tacoma Airport when flying to Seattle with Delta.

Are there any other airlines in SkyTeam that fly to Seattle?

Unfortunately, there are no other airlines in SkyTeam that fly to Seattle.

Delta flights to Seattle (SEA) from $89

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Flight Deals

Cheap Delta Flight Deals to Seattle

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip Delta flight deals to Seattle

Sat, Aug 29 - Sun, Sep 6

6:20 am - 8:31 am

SFO

SEA

2h 11mnonstop

7:20 am - 9:38 am

SEA

SFO

2h 18mnonstop

$167Delta

Thu, Aug 20 - Sun, Aug 30

10:40 am - 12:51 pm

SFO

SEA

2h 11mnonstop

7:20 am - 9:38 am

SEA

SFO

2h 18mnonstop

$172Delta

Thu, Aug 27 - Fri, Aug 28

6:20 am - 8:31 am

SFO

SEA

2h 11mnonstop

5:51 pm - 8:19 pm

SEA

SFO

2h 28mnonstop

$177Delta

Sat, Aug 29 - Sun, Aug 30

10:36 am - 12:47 pm

SFO

SEA

2h 11mnonstop

7:20 am - 9:38 am

SEA

SFO

2h 18mnonstop

$182Delta

Fri, Oct 23 - Sun, Oct 25

6:00 am - 8:21 am

SFO

SEA

2h 21mnonstop

7:16 am - 9:38 am

SEA

SFO

2h 22mnonstop

$187Delta

Thu, Sep 3 - Sat, Sep 5

6:20 am - 8:31 am

SFO

SEA

2h 11mnonstop

5:51 pm - 8:05 pm

SEA

SFO

2h 14mnonstop

$192Delta

Thu, Aug 20 - Mon, Aug 24

9:00 pm - 11:44 pm

LAX

SEA

2h 44mnonstop

7:55 pm - 10:45 pm

SEA

LAX

2h 50mnonstop

$197Delta

Fri, Aug 28 - Sun, Aug 30

6:20 am - 8:31 am

SFO

SEA

2h 11mnonstop

7:20 am - 9:38 am

SEA

SFO

2h 18mnonstop

$197Delta

Thu, Sep 3 - Sun, Sep 6

6:20 am - 8:31 am

SFO

SEA

2h 11mnonstop

7:20 am - 9:38 am

SEA

SFO

2h 18mnonstop

$202Delta

Thu, Aug 20 - Mon, Aug 24

9:00 pm - 11:44 pm

LAX

SEA

2h 44mnonstop

7:55 pm - 10:45 pm

SEA

LAX

2h 50mnonstop

$207Delta

Useful Info

KAYAK's insights & trends for Seattle flights with Delta

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

What is the cheapest month to fly with Delta to Seattle?

The cheapest month for Delta flights to Seattle is February, where tickets cost $249 (return) on average. On the other hand, the most expensive months to fly this route on Delta are July and June, where the average cost of round-trip tickets is $405 and $391 respectively.

How far in advance should I book Delta flights to Seattle?

For the absolute cheapest price on Delta, our data suggests you should book 4 weeks before departure.

What is the cheapest flight to Seattle with Delta?

The cheapest airline ticket to Seattle from the United States with Delta in the last 5 days was $89 one-way, and $167 round-trip on the route from San Francisco to Seattle. The most popular route is from Washington, D.C. Dulles Intl Airport to Seattle and the cheapest ticket found on this route in the last 5 days was $305 return.

How many direct flights does Delta operate to Seattle every week?

Each week there are around 1,140 direct flights from within the United States to Seattle. The most common day for departures is Sunday, with 16% of flights taking off on this day.

What is the cheapest day to fly to Seattle?

Based on KAYAK data, the cheapest day to fly to Seattle is Friday where tickets can be as cheap as $486. On the other hand, the most expensive day to fly is Monday, where prices are $591 on average.

What is the cheapest time of day to fly to Seattle with Delta?

The cheapest time of day to fly to Seattle with Delta is generally in the afternoon, when flights cost $459 on average.

Low season	January
High season	July
Cheapest flight	$89
Average price round-trip	$1,725
Good deal round-trip	$1,466
Good deal one-way	$841

Best time to beat the crowds with an average 22% drop in price.

Most popular time to fly with an average 24% increase in price.

Flight from San Francisco to Seattle

(avg. price over the last 2 weeks)

or less

When to book flights with Delta to Seattle

Average price per month

Flight prices as travel date approaches

Is Delta cheaper than other airlines flying to Seattle?
With an average return price of $651, Delta is the most expensive airline flying into Seattle. The cheapest airline flying to Seattle is Frontier.
Which other airlines fly to Seattle?
Along with Delta, you can also fly to Seattle with Alaska Airlines, Alaska Airlines, American Airlines, Southwest and Frontier.
How much is a flight to Seattle with Delta?
On average, Delta flights to Seattle cost $713 for one-way and $651 return.
Which airport do Delta flights to Seattle fly into?
You’ll fly into Seattle/Tacoma Airport when flying to Seattle with Delta.
Are there any other airlines in SkyTeam that fly to Seattle?
Unfortunately, there are no other airlines in SkyTeam that fly to Seattle.

The cheapest flight to Seattle with Delta found on KAYAK in the last 2 weeks departed from Lewiston and cost $163.
If you’re intending to fly with Delta, book your flight to Seattle at least 2 weeks before departure to ensure a below-average price.
High season for flights to Seattle with Delta is August and prices are highest at this time. The cheapest month to fly is January.

7.8

Good8,485 verified ratings

7.8Comfort

8.1Boarding

7.8Entertainment

7.2Food

8.5Crew

2.0 Poor

Dmitriy, Jul 2026

I missed this flight due to KLM problems

2.0 Poor

Dmitriy, Jul 2026

Notify me when you cancel your flights. It would save me time running around Budapest airport and making call to travel agents. Your ticketing office is closed and no help offered by any personnel.

4.0 Mediocre

ROBERTO, Jul 2026

Food and beverage. More comfortable seats

4.0 Mediocre

ROBERTO, Jul 2026

Departing on time. Food and drinks

2.0 Poor

Mark, Jul 2026

2 day delay

6.0 Okay

Jorge, Jul 2026

My son’s suitcase was left behind at SFO and did not make the flight.

6.0 Okay

Jeremy, Jul 2026

Seats were not bad enough and uncomfortable good legroom in the emergency exit row we were in, but we were forbidden to hold my grandson on my lap for a little while, and the stewardess passed us saying it was against regulations which makes little or no sense when you’re 36,000 feet. The food snacks were really bad. Tasteless tasted like wallpaper, but we’re supposed to be protein bars, and the announcements were all completely incoherent because of the noise of the airplane and the lowness and crackly nature of the PA system.. this was disgraceful. No one in our party could understand a word of what the captain or the flight attendant were saying —not a word! The landing was a little hairy in a pretty stiff crosswind -we bounced before the plane stabilized on the runway

2.0 Poor

Anonymous, Jul 2026

Delayed 14 hours

8.0 Very good

Jim, Jul 2026

Tv screens not working for Delta Comfort

6.0 Okay

Anonymous, Jul 2026

Chaotic boarding at these gates, multiple gates squeezed in at the very end of a concourse, behind a restaurant. Agents gave up on boarding by individual zones. Flight itself was uneventful, which is all we hope for any more.

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KAYAK's insights & trends for Seattle flights with Delta

What is the cheapest month to fly with Delta to Seattle?

How far in advance should I book Delta flights to Seattle?

What is the cheapest flight to Seattle with Delta?

How many direct flights does Delta operate to Seattle every week?

What is the cheapest day to fly to Seattle?

What is the cheapest time of day to fly to Seattle with Delta?

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