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Cheap flights from Dallas/Fort Worth Airport to Seattle from £126

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 29/8. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — SEA
30 Aug — 6 Sep1
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 68 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Dallas/Fort Worth to Seattle

Enter your travel dates to find the best prices.

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 31 July 2026.

Sat 22/807:30
DFW
-
SEA
1 stop14h 08m
Multiple Airlines
Thu 27/817:56
SEA
-
DFW
Nonstop4h 03m
Multiple Airlines
Deal found 30/7£220
Fri 30/1015:25
DFW
-
SEA
1 stop8h 08m
Alaska Airlines
Fri 30/1000:24
SEA
-
DFW
Nonstop3h 56m
Alaska Airlines
Deal found 27/7£221
Wed 19/805:18
DFW
-
SEA
1 stop6h 01m
Frontier
Fri 28/819:06
SEA
-
DFW
1 stop11h 03m
Frontier
Deal found 30/7£226
Sat 22/807:30
DFW
-
SEA
1 stop14h 08m
Multiple Airlines
Sat 29/806:00
SEA
-
DFW
Nonstop3h 59m
Multiple Airlines
Deal found 30/7£228
Mon 17/807:25
DFW
-
SEA
1 stop12h 26m
Frontier
Thu 27/819:06
SEA
-
DFW
1 stop11h 03m
Frontier
Deal found 30/7£229
Wed 19/820:17
DFW
-
SEA
2 stops15h 02m
Frontier
Sat 29/820:53
SEA
-
DFW
1 stop6h 55m
Frontier
Deal found 30/7£231
Sun 30/821:03
DFW
-
SEA
Nonstop4h 20m
Alaska Airlines
Tue 8/908:41
SEA
-
DFW
1 stop7h 32m
Alaska Airlines
Deal found 30/7£231
Tue 18/819:24
DFW
-
SEA
1 stop17h 01m
Alaska Airlines
Wed 19/813:53
SEA
-
DFW
Nonstop4h 04m
Alaska Airlines
Deal found 27/7£233
Fri 2/1019:38
DFW
-
SEA
1 stop26h 48m
Alaska Airlines
Sat 3/1000:24
SEA
-
DFW
Nonstop3h 56m
Alaska Airlines
Deal found 29/7£234
Fri 28/815:49
DFW
-
SEA
Nonstop4h 22m
Alaska Airlines
Fri 28/820:49
SEA
-
DFW
1 stop13h 53m
Alaska Airlines
Deal found 29/7£236
Tue 25/817:00
DFW
-
SEA
Nonstop4h 27m
Delta
Tue 1/917:55
SEA
-
DFW
Nonstop4h 00m
Delta
Deal found 29/7£236
Wed 26/813:51
DFW
-
SEA
1 stop7h 01m
Alaska Airlines
Sun 6/908:40
SEA
-
DFW
Nonstop4h 06m
Alaska Airlines
Deal found 30/7£239

Find 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 31 July 2026.

Round-trip from

£220

One-way from

£126

Popular in

July

Cheapest in

January

Average price

£328
Alaska Airlines
  • Alaska Airlines
  • 22/8-27/8
  • 1 total stop
  • 18h 11m total
  • Dallas to Seattle
Search Deals
Delta
  • Delta
  • 29/8
  • Nonstop
  • 4h 27m total
  • Dallas to Seattle
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£44 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
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 31 July 2026.
Use the filters below to find and compare flights from Dallas/Fort Worth Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Mon 31/8

21:03-23:23

Nonstop4h 20m

Seattle/Tacoma Intl

Wed 2/9

07:40-18:13

1 stop8h 33m

£231

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Fri 6/11

15:33-18:02

Nonstop4h 29m

Seattle/Tacoma Intl

Sun 8/11

20:42-14:34

1 stop15h 52m

£239

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Fri 16/10

08:05-15:17

1 stop9h 12m

Seattle/Tacoma Intl

Fri 16/10

17:58-23:59

Nonstop4h 01m

£239

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Sun 4/10

17:35-20:00

Nonstop4h 25m

Seattle/Tacoma Intl

Tue 13/10

17:55-23:57

Nonstop4h 02m

£266

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Fri 28/8

17:00-19:27

Nonstop4h 27m

Seattle/Tacoma Intl

Tue 1/9

09:15-15:13

Nonstop3h 58m

£266

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Tue 8/9

13:51-20:32

2 stops8h 41m

Seattle/Tacoma Intl

Wed 9/9

08:41-18:13

1 stop7h 32m

£277
Fastest return journey

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Tue 18/8

06:30-08:46

Nonstop4h 16m

Seattle/Tacoma Intl

Mon 24/8

09:15-15:13

Nonstop3h 58m

£278

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Sat 22/8

06:20-08:38

Nonstop4h 18m

Seattle/Tacoma Intl

Mon 31/8

22:58-05:00

Nonstop4h 02m

£278

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Thu 15/10

07:15-09:43

Nonstop4h 28m

Seattle/Tacoma Intl

Sat 17/10

17:55-23:57

Nonstop4h 02m

£281

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Sat 22/8

06:30-08:46

Nonstop4h 16m

Seattle/Tacoma Intl

Sat 29/8

09:15-15:13

Nonstop3h 58m

£285

Flights are sorted by cheapest return flights first.

Deals found on 30/7

Showing 1-10 of 22 resultsSorted by cheapest first
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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?

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 67 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 £200). Flying from Dallas/Fort Worth Airport to Seattle in July is currently the most expensive (average of £328). 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 31 July 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 55% on flights from Dallas/Fort Worth Airport to Seattle by exploring options for tickets in the evening.

How much does it cost for a return flight from Dallas/Fort Worth Airport to Seattle?

Airfare is below average for this route at the moment.

Dallas/Fort Worth Airport to Seattle flights typically cost between £225 and £342 in August.
The cheapest return price found within the last 5 days was £220 on Multiple Airlines (22 Aug–27 Aug).

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 34 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?

    Delta and Alaska Airlines can get you from Dallas/Fort Worth Airport to Seattle in just under 4h 20m. 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 Delta (89%), Korean Air (89%) or Scandinavian Airlines (88%) when booking your flight. These represent the most reliable airlines when flying from Dallas/Fort Worth Airport to Seattle.

  • 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 £200). Flying from Dallas/Fort Worth Airport to Seattle in July is currently the most expensive (average of £328). 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
Federal Way
SeaTac

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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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