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Find cheap Delta flights to Seattle

RDU — SEA
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find Delta flight deals to Seattle

Cheapest Delta flights from USA to Seattle
Explore the most affordable Delta flight options available from USA to Seattle. Find the lowest fares with prices last updated on July 27, 2026.

This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:20 am
SFO
-
SEA
Nonstop2h 11m
Delta
Mon 8/319:30 pm
SEA
-
SFO
Nonstop2h 20m
Delta
Deal found 7/22$167
This Delta deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:40 am
SFO
-
SEA
Nonstop2h 11m
Delta
Sun 8/307:20 am
SEA
-
SFO
Nonstop2h 18m
Delta
Deal found 7/23$172
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:20 am
SFO
-
SEA
Nonstop2h 11m
Delta
Sun 8/307:20 am
SEA
-
SFO
Nonstop2h 18m
Delta
Deal found 7/22$177

Flights to Seattle with Delta at a glance

Find detailed information about Delta flights from USA to Seattle. Explore the options provided by Delta to plan your journey from USA to Seattle. Data last updated July 27, 2026.

Popular in

July

Cheapest in

January

Average price

$312

Round-trip from

$167

One-way from

$89

Good round-trip deal

$357 or less

Good one-way deal

$358 or less
Highest demand for flights to Seattle with Delta; 17% potential price increase.
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Best time to find cheap flights to Seattle with Delta; 2% potential price drop.
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Average price for flights to Seattle with Delta (round-trip).
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Delta
  • Delta
  • 8/29-9/6
  • Nonstop
  • 4h 29m total
  • USA to Seattle
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Delta
  • Delta
  • 8/22
  • Nonstop
  • 2h 11m total
  • USA to Seattle
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Price to beat on a round-trip flight from the United States to Seattle with Delta.
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Price to beat on a one-way flight from the United States to Seattle with Delta.
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Cheapflights Insights

Find cheap Delta flights to Seattle

How long is the flight to Seattle with Delta?

On average, Delta flights from the United States to Seattle take 4 hours 33 minutes. Flights to Seattle from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

Delta weekly flight availability to Seattle

The most flights to Seattle operated by Delta are scheduled on a Sunday (183 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (155 on average).

When is the best time to book a flight to Seattle with Delta?

The best time to book a flight to Seattle with Delta is 35 days before departure. On average, fares are higher if you book on the same day as departure.

When is the cheapest time to fly to Seattle with Delta?

Users looking for the cheapest Delta fares to Seattle should consider flying on Friday at noon, when prices are typically cheapest. Budget-minded travellers will want to avoid Monday mornings, when prices are usually at their highest.

FAQs about flights to Seattle with Delta

  • Which airport do Delta flights arrive at when travelling to Seattle?

    Delta flights on this route tend to land at Seattle/Tacoma Intl Airport.

  • Is Delta the cheapest airline for a flight to Seattle?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Seattle tends to be with Spirit Airlines.

  • Are there alternative airlines other than Delta that fly to Seattle?

    Alaska Airlines, American Airlines and United Airlines all fly to Seattle and offer an alternative to Delta.

  • How much is a flight to Seattle with Delta?

    The average price for a return flight with Delta is $423; with a one-way flight around $291.

See more FAQs

Reviews of Delta

See what Cheapflights users have to say about their Delta experience.
Delta
7.8
Good
8,483 reviews
Overview

Crew

8.5

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Food

7.2

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