Is Delta cheaper than other airlines flying to Seattle?

With an average return price of $634, Delta is the most expensive airline flying into Seattle. The cheapest airline flying to Seattle is United Airlines.

Which other airlines fly to Seattle?

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

How much is a flight to Seattle with Delta?

On average, Delta flights to Seattle cost $634 for a round-trip.

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 $91

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, May 16 - Wed, May 20

10:29 am - 12:45 pm

SFO

SEA

2h 16mnonstop

7:15 am - 9:34 am

SEA

SFO

2h 19mnonstop

$141Delta

Thu, May 14 - Wed, May 20

5:55 am - 8:17 am

SFO

SEA

2h 22mnonstop

7:15 am - 9:34 am

SEA

SFO

2h 19mnonstop

$147Delta

Mon, Jun 1 - Mon, Jun 8

5:55 am - 8:15 am

SFO

SEA

2h 20mnonstop

9:38 pm - 11:59 pm

SEA

SFO

2h 21mnonstop

$153Delta

Wed, Jun 24 - Wed, Jul 1

5:30 pm - 7:50 pm

SFO

SEA

2h 20mnonstop

2:50 pm - 5:10 pm

SEA

SFO

2h 20mnonstop

$157Delta

Mon, May 11 - Tue, May 19

8:30 pm - 10:55 pm

SFO

SEA

2h 25mnonstop

2:45 pm - 4:57 pm

SEA

SFO

2h 12mnonstop

$170Delta

Tue, May 19 - Sat, May 23

9:05 pm - 11:55 pm

LAX

SEA

2h 50mnonstop

9:20 pm - 11:55 pm

SEA

LAX

2h 35mnonstop

$177Delta

Sat, May 30 - Thu, Jun 4

5:40 pm - 8:30 pm

LAX

SEA

2h 50mnonstop

3:00 pm - 5:38 pm

SEA

LAX

2h 38mnonstop

$187Delta

Sat, Jun 6 - Tue, Jun 9

5:55 am - 8:15 am

SFO

SEA

2h 20mnonstop

9:45 pm - 12:06 am

SEA

SFO

2h 21mnonstop

$187Delta

Tue, Sep 1 - Tue, Sep 8

6:45 am - 8:53 am

DEN

SEA

3h 08mnonstop

8:25 am - 12:22 pm

SEA

DEN

2h 57mnonstop

$189Delta

Wed, May 27 - Sat, Jun 6

5:55 am - 8:17 am

SFO

SEA

2h 22mnonstop

10:00 am - 12:27 pm

SEA

SFO

2h 27mnonstop

$189Delta

Useful Info

Low season	January
High season	July
Cheapest flight	$91
Average price round-trip	$492
Good deal round-trip	$418
Good deal one-way	$767

Best time to beat the crowds with an average 16% drop in price.

Most popular time to fly with an average 6% 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 $634, Delta is the most expensive airline flying into Seattle. The cheapest airline flying to Seattle is United Airlines.
Which other airlines fly to Seattle?
Along with Delta, you can also fly to Seattle with Alaska Airlines, Alaska Airlines, American Airlines, Southwest and United Airlines.
How much is a flight to Seattle with Delta?
On average, Delta flights to Seattle cost $634 for a round-trip.
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 Boise and cost $177.
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 July and prices are highest at this time. The cheapest month to fly is January.

7.9

Good8,466 verified ratings

8.5Crew

7.8Entertainment

7.2Food

8.1Boarding

7.9Comfort

6.0 Okay

Silvestre, Apr 2026

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

8.0 Very good

Brent, Apr 2026

Round trip flight to Canada and back to the US was smooth and efficient.

4.0 Mediocre

Michael, Apr 2026

My knees were hurting

4.0 Mediocre

Bradley, Apr 2026

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

10.0 Wonderful

Michael, Apr 2026

Everything was on time. Pleasant service

2.0 Poor

Sam, Apr 2026

Spanish speaker flight attendants were incredibly rude. A male flight attendant named Allen, grabbed my bag out of the overhead bin and moved it without my permission. When I asked what he was doing, he informed me that the overhead bins were public space? It would be easy to ignore this comment, as you don’t know the whole story, but the flight attendants were militant and rude. Delta, you can do better!

10.0 Wonderful

Fredrick, Apr 2026

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

4.0 Mediocre

Anonymous, Apr 2026

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

8.0 Very good

Tricia, Apr 2026

It was cold on the plane.

10.0 Wonderful

Paul A, Apr 2026

The flight was very good and the staff was very friendly and helpful!

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Cheap Delta Flight Deals to Seattle

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When to book flights with Delta to Seattle

FAQs for flying to Seattle with Delta

Is Delta cheaper than other airlines flying to Seattle?

With an average return price of $634, Delta is the most expensive airline flying into Seattle. The cheapest airline flying to Seattle is United Airlines.

Which other airlines fly to Seattle?

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

How much is a flight to Seattle with Delta?

On average, Delta flights to Seattle cost $634 for a round-trip.

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.

Top tips for your flights to Seattle with Delta

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Everything you need to know for your flight to Seattle

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