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Cheap flights from Dallas/Fort Worth Airport to Seattle from £63

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/2. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — SEA
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Dallas/Fort Worth to Seattle/Tacoma Intl are usually found in January or February, booked 71 days in advance, depart on a Wednesday or Tuesday and return on a Monday

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Cheapest flights from Dallas/Fort Worth to Seattle
Explore the most affordable flight options available from Dallas/Fort Worth to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 November 2025.

Thu 18/1221:27DFW - SEA
Nonstop4h 35mAlaska Airlines
Thu 8/115:50SEA - DFW
Nonstop3h 59mAlaska Airlines
Deal found 10/11£142
Thu 4/1220:40DFW - SEA
Nonstop4h 31mAlaska Airlines
Thu 4/1200:45SEA - DFW
Nonstop3h 55mAlaska Airlines
Deal found 9/11£145
Tue 9/1218:17DFW - SEA
Nonstop4h 33mAlaska Airlines
Tue 16/1218:00SEA - DFW
Nonstop3h 58mAlaska Airlines
Deal found 11/11£150
Thu 27/1114:29DFW - SEA
Nonstop4h 31mAlaska Airlines
Wed 3/1209:40SEA - DFW
Nonstop4h 00mAlaska Airlines
Deal found 11/11£155
Tue 16/1207:10DFW - SEA
Nonstop4h 40mDelta
Sun 28/1200:55SEA - DFW
1 stop6h 55mDelta
Deal found 10/11£157
Sat 20/1221:27DFW - SEA
Nonstop4h 35mAlaska Airlines
Mon 12/108:23SEA - DFW
Nonstop3h 59mAlaska Airlines
Deal found 10/11£158
Tue 16/1212:35DFW - SEA
1 stop6h 19mDelta
Mon 12/113:30SEA - DFW
1 stop8h 26mDelta
Deal found 10/11£165
Sun 14/1207:40DFW - SEA
Nonstop4h 38mAlaska Airlines
Mon 29/1201:07SEA - DFW
Nonstop3h 53mAlaska Airlines
Deal found 10/11£166
Fri 5/1213:48DFW - SEA
2 stops9h 12mUnited Airlines
Mon 8/1223:59SEA - DFW
1 stop6h 47mUnited Airlines
Deal found 9/11£169
Sun 21/1221:27DFW - SEA
Nonstop4h 35mAlaska Airlines
Fri 9/118:02SEA - DFW
Nonstop3h 56mAlaska Airlines
Deal found 10/11£172
Sat 13/1206:15DFW - SEA
2 stops14h 11mDelta
Mon 29/1206:10SEA - DFW
1 stop9h 54mDelta
Deal found 10/11£179
Fri 19/1216:05DFW - SEA
1 stop8h 49mDelta
Mon 12/117:55SEA - DFW
Nonstop3h 50mDelta
Deal found 10/11£180

Cheap flight deals from Dallas/Fort Worth to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Dallas/Fort Worth (DFW) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 November 2025.

Round-trip from

£134

One-way from

£63

Popular in

July

Cheapest in

January

Average price

£224

Good round-trip deal

£196 or less
Delta
  • Delta
  • 24/2-4/3
  • Nonstop
  • 8h 30m total
  • Dallas to Seattle
Search Deals
Frontier
  • Frontier
  • 18/2
  • 1 total stop
  • 19h 38m total
  • Dallas to Seattle
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£20 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Dallas/Fort Worth to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dallas/Fort Worth to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 November 2025.
Use the filters below to find and compare flights from Dallas/Fort Worth Airport to Seattle that are best for you.

Fly from

Dallas/Fort Worth

Fly to

Seattle

Route

Depart

Return

Price

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Fri 30/1

15:27-17:58

Nonstop4h 31m

Seattle/Tacoma Intl

Fri 6/2

18:02-23:58

Nonstop3h 56m

£134

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Tue 17/2

06:20-08:52

Nonstop4h 32m

Seattle/Tacoma Intl

Fri 27/2

17:58-23:48

Nonstop3h 50m

£134

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Tue 3/3

15:28-18:01

Nonstop4h 33m

Seattle/Tacoma Intl

Thu 5/3

08:30-14:28

Nonstop3h 58m

£134

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Mon 9/2

16:25-18:55

Nonstop4h 30m

Seattle/Tacoma Intl

Tue 10/2

09:30-15:28

Nonstop3h 58m

£134

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Wed 4/3

15:28-18:01

Nonstop4h 33m

Seattle/Tacoma Intl

Sun 8/3

00:31-06:20

Nonstop3h 49m

£134

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Thu 5/2

06:20-08:53

Nonstop4h 33m

Seattle/Tacoma Intl

Sun 8/2

17:55-23:45

Nonstop3h 50m

£134

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Sun 15/2

16:30-19:00

Nonstop4h 30m

Seattle/Tacoma Intl

Fri 27/2

17:58-23:48

Nonstop3h 50m

£134

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Wed 17/12

20:40-23:11

Nonstop4h 31m

Seattle/Tacoma Intl

Tue 13/1

15:50-21:49

Nonstop3h 59m

£142

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Wed 17/12

07:10-09:50

Nonstop4h 40m

Seattle/Tacoma Intl

Fri 9/1

17:55-23:45

Nonstop3h 50m

£142

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Wed 10/12

16:27-18:55

Nonstop4h 28m

Seattle/Tacoma Intl

Sat 13/12

17:55-23:50

Nonstop3h 55m

£150

Flights are sorted by cheapest return flights first.

Deals found on 10/11

Showing 1-10 of 22 results
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Best time to book a flight from Dallas/Fort Worth to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Dallas/Fort Worth with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Dallas/Fort Worth Airport to Seattle

How far ahead should I book a flight from Dallas/Fort Worth Airport to Seattle?

Use this chart to determine the optimal time to book a return flight from Dallas/Fort Worth to Seattle. Price data was last updated on 7 November 2025.

The price you pay for your flight from Dallas/Fort Worth Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 71 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Dallas/Fort Worth Airport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Dallas/Fort Worth Airport to Seattle (average of £46). Flying from Dallas/Fort Worth Airport to Seattle in June is currently the most expensive (average of £125). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DFW to SEA?

Find hourly flight availability from Dallas/Fort Worth to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 November 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 49% on flights from Dallas/Fort Worth Airport to Seattle by exploring options for tickets in the evening.

Related info for your journey

Find useful and relevant information for your journey from Dallas/Fort Worth to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Dallas/Fort Worth?

    For a flight from Dallas/Fort Worth to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 43 inbound flights from Dallas/Fort Worth per day. 0 airlines have flights to Seattle/Tacoma Intl from Dallas/Fort Worth on a regular basis.

  • How long is the flight from Dallas/Fort Worth Airport to Seattle?

    Alaska Airlines and Delta can get you from Dallas/Fort Worth Airport to Seattle in just under 4h 31m. Your travel time will be generally consistent. The distance from Dallas/Fort Worth Airport to Seattle is about 1657 mi. Most flights are nonstop.

  • What are the most reliable airlines from Dallas/Fort Worth Airport to Seattle?

    Consider Scandinavian Airlines (88%), Delta (87%) or Japan Airlines (78%) when booking your flight. These represent the most reliable airlines when flying from Dallas/Fort Worth Airport to Seattle.

  • What are the cheapest flights from Dallas/Fort Worth Airport to Seattle?

    Looking for the cheapest flight from Dallas/Fort Worth Airport to Seattle? While on average our users pay £253, our data indicates the cheapest price to be £195. The most popular route (Dallas/Fort Worth - Seattle/Tacoma Intl), is priced around £109.

  • Can I find deals for flights from Dallas/Fort Worth to Seattle that include hotel bookings?

    Yes. In addition to deals on Dallas/Fort Worth to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dallas/Fort Worth to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dallas/Fort Worth to Seattle.

  • Can I find deals for business class flights from Dallas/Fort Worth to Seattle?

    Yes. Cheapflights offers flight deals from Dallas/Fort Worth to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Dallas/Fort Worth Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Dallas/Fort Worth Airport to Seattle (average of £46). Flying from Dallas/Fort Worth Airport to Seattle in June is currently the most expensive (average of £125). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell
SeaTac

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Why should you use Cheapflights to find cheap flight tickets from Dallas/Fort Worth to Seattle?

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Can Cheapflights find flights from Dallas/Fort Worth to Seattle with no change fees?

Yes! Cheapflights helps users easily find flights from Dallas/Fort Worth to Seattle with no change fees.

Can Cheapflights notify me if prices for flights from Dallas/Fort Worth to Seattle become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Dallas/Fort Worth today and book when prices fit your budget.

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