Is Delta cheaper than other airlines flying to Seattle?

Delta is the cheapest airline flying to Seattle with an average return price of $429. Flights to Seattle with Alaska Airlines cost $482 on average.

Which other airlines fly to Seattle?

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

How much is a flight to Seattle with Delta?

On average, Delta flights to Seattle cost $429 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 $49

Flight Deals

Cheap Delta Flight Deals to Seattle

Here are some of the best deals found on KAYAK recently from Delta 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.

Round-trip

One-way

Last minute

Direct

Recent round-trip Delta flight deals to Seattle

ti, tammi 6 - ke, tammi 7

6:29 am - 8:40 am

DEN

SEA

3h 11mnonstop

7:40 pm - 11:25 pm

SEA

DEN

2h 45mnonstop

$97Delta

ke, tammi 7 - su, tammi 11

6:50 pm - 9:10 pm

DEN

SEA

3h 20mnonstop

5:25 am - 11:54 am

SEA

DEN

5h 29m1 stop

$107Delta

pe, tammi 9 - ma, tammi 12

6:23 pm - 11:22 pm

DEN

SEA

5h 59m1 stop

1:38 pm - 7:56 pm

SEA

DEN

5h 18m1 stop

$117Delta

pe, tammi 9 - su, tammi 18

12:49 pm - 6:29 pm

DEN

SEA

6h 40m1 stop

8:25 am - 12:27 pm

SEA

DEN

3h 02mnonstop

$127Delta

pe, tammi 9 - su, tammi 11

5:03 pm - 11:22 pm

SNA

SEA

6h 19m1 stop

7:25 am - 10:23 am

SEA

SNA

2h 58mnonstop

$129Delta

pe, tammi 23 - su, tammi 25

3:30 pm - 6:35 pm

ONT

SEA

3h 05mnonstop

7:00 pm - 11:58 pm

SEA

ONT

4h 58m1 stop

$129Delta

la, tammi 10 - su, tammi 11

7:30 am - 10:36 am

ONT

SEA

3h 06mnonstop

6:05 pm - 10:38 pm

SEA

ONT

4h 33m1 stop

$130Delta

ti, tammi 20 - su, tammi 25

12:30 pm - 2:43 pm

DEN

SEA

3h 13mnonstop

7:40 pm - 11:25 pm

SEA

DEN

2h 45mnonstop

$137Delta

ti, tammi 6 - pe, tammi 9

7:30 am - 10:39 am

SNA

SEA

3h 09mnonstop

7:30 pm - 10:18 pm

SEA

SNA

2h 48mnonstop

$139Delta

pe, tammi 23 - la, tammi 24

5:10 pm - 12:09 am

ONT

SEA

6h 59m1 stop

5:00 am - 12:16 pm

SEA

ONT

7h 16m1 stop

$139Delta

Useful Info

Low season	January
High season	July
Cheapest flight	$49
Average price round-trip	$1,917
Good deal round-trip	$1,629
Good deal one-way	$877

Best time to beat the crowds with an average 13% drop in price.

Most popular time to fly with an average 7% increase in price.

Flight from Denver 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?
Delta is the cheapest airline flying to Seattle with an average return price of $429. Flights to Seattle with Alaska Airlines cost $482 on average.
Which other airlines fly to Seattle?
Along with Delta, you can also fly to Seattle with Alaska Airlines, Alaska Airlines, American Airlines and Southwest.
How much is a flight to Seattle with Delta?
On average, Delta flights to Seattle cost $429 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 Palm Springs and cost $99.
If you’re intending to fly with Delta, book your flight to Seattle at least 1 week 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

Good8,007 verified ratings

8.1Boarding

7.9Comfort

7.9Entertainment

7.3Food

8.5Crew

Pros +

Cons -

"Sanitized, open middle seats, comfortable." (in 81 reviews)

Show reviews that mention

10.0 Wonderful

Michelle, Dec 2025

It was great

10.0 Wonderful

Ronda, Dec 2025

The food is terrible. The staff is wonderful. Comfort is good.

10.0 Wonderful

Karen, Dec 2025

For some reason, I couldn't choose my seat. The airline gave me a seat when I got there. Not happy about that. Otherwise, everything else was great!

10.0 Wonderful

Charles, Dec 2025

Left on time, a bit delayed due to headwinds most of the trip.

4.0 Mediocre

Carl, Dec 2025

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

8.0 Very good

Scarlett, Dec 2025

Getting to the flight was arduous and lengthy. The flight itself was good but the food option wasn’t a good selection. I need to do a Kosher option on my return. Flight crew were nice

10.0 Wonderful

Anonymous, Dec 2025

Good seats in Main cabin, excellent service and excellent landing

6.0 Okay

Mary Heather, Nov 2025

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

10.0 Wonderful

Morgan, Nov 2025

Quick flight. Total of 50 mins. Flight staff was nice

10.0 Wonderful

William, Nov 2025

Efficient and hassle free.

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Find cheap Delta flights to Seattle from $49

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Cheap Delta Flight Deals to Seattle

Recent round-trip Delta flight deals to Seattle

Recent one-way Delta flight deals to Seattle

Recent last minute Delta flight deals to Seattle

Recent direct 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?

Which other airlines fly to Seattle?

How much is a flight to Seattle with Delta?

Which airport do Delta flights to Seattle fly into?

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

Top tips for your flights to Seattle with Delta

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