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Cheap flights from Dallas/Fort Worth Airport to Seattle from £109

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 17/6. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — SEA
11 May — 18 May1
1 adult
1 adult, Economy, 0 bags

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 11 April 2026.

Tue 5/519:15
DFW
-
SEA
1 stop20h 51m
Alaska Airlines
Wed 6/517:51
SEA
-
DFW
Nonstop4h 08m
Alaska Airlines
Deal found 6/4£191
Tue 28/419:15
DFW
-
SEA
1 stop20h 51m
Alaska Airlines
Wed 29/417:51
SEA
-
DFW
Nonstop4h 08m
Alaska Airlines
Deal found 6/4£199
Sat 23/519:09
DFW
-
SEA
1 stop16h 16m
Alaska Airlines
Sun 24/511:54
SEA
-
DFW
Nonstop4h 15m
Alaska Airlines
Deal found 7/4£239
Sat 9/506:20
DFW
-
SEA
Nonstop4h 32m
Alaska Airlines
Sat 9/511:54
SEA
-
DFW
Nonstop4h 21m
Alaska Airlines
Deal found 7/4£254
Tue 5/509:00
DFW
-
SEA
Nonstop4h 27m
Alaska Airlines
Tue 19/522:58
SEA
-
DFW
Nonstop4h 02m
Alaska Airlines
Deal found 7/4£258
Sat 2/506:30
DFW
-
SEA
Nonstop4h 24m
Delta
Sat 9/517:54
SEA
-
DFW
Nonstop4h 05m
Delta
Deal found 9/4£262
Fri 6/1120:36
DFW
-
SEA
Nonstop4h 21m
Alaska Airlines
Sat 7/1108:00
SEA
-
DFW
1 stop6h 35m
Alaska Airlines
Deal found 9/4£266
Tue 12/507:30
DFW
-
SEA
1 stop16h 33m
Delta
Tue 26/517:54
SEA
-
DFW
Nonstop4h 05m
Delta
Deal found 9/4£268
Sat 16/516:15
DFW
-
SEA
Nonstop4h 28m
Delta
Tue 19/517:54
SEA
-
DFW
Nonstop4h 05m
Delta
Deal found 9/4£269
Sat 16/506:30
DFW
-
SEA
Nonstop4h 22m
Delta
Thu 28/509:15
SEA
-
DFW
Nonstop4h 03m
Delta
Deal found 9/4£271
Wed 6/520:47
DFW
-
SEA
Nonstop4h 28m
Alaska Airlines
Sun 10/517:51
SEA
-
DFW
Nonstop4h 08m
Alaska Airlines
Deal found 6/4£273

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 11 April 2026.

Round-trip from

£191

One-way from

£109

Popular in

May

Cheapest in

January

Average price

£213

Good one-way deal

£169 or less
Alaska Airlines
  • Alaska Airlines
  • 5/5-6/5
  • 1 total stop
  • 24h 59m total
  • Dallas to Seattle
Search Deals
Frontier
  • Frontier
  • 17/6
  • 1 total stop
  • 6h 50m total
  • Dallas to Seattle
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a one-way 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 April 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

Tue 5/5

19:15-14:06

1 stop20h 51m

Seattle/Tacoma Intl

Wed 6/5

17:51-23:59

Nonstop4h 08m

£191

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Sat 9/5

06:20-08:52

Nonstop4h 32m

Seattle/Tacoma Intl

Sat 9/5

11:54-18:15

Nonstop4h 21m

£254

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Sat 9/5

06:20-08:52

Nonstop4h 32m

Seattle/Tacoma Intl

Wed 13/5

22:58-05:00

Nonstop4h 02m

£258

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Sat 2/5

06:30-08:54

Nonstop4h 24m

Seattle/Tacoma Intl

Mon 4/5

17:51-23:52

Nonstop4h 01m

£273

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Tue 5/5

06:20-08:52

Nonstop4h 32m

Seattle/Tacoma Intl

Fri 8/5

22:57-05:00

Nonstop4h 03m

£273

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Tue 5/5

15:13-21:45

1 stop8h 32m

Seattle/Tacoma Intl

Sat 9/5

22:57-05:00

Nonstop4h 03m

£282

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Wed 2/9

15:47-18:09

Nonstop4h 22m

Seattle/Tacoma Intl

Wed 9/9

10:45-16:59

Nonstop4h 14m

£283

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Fri 8/5

06:20-08:52

Nonstop4h 32m

Seattle/Tacoma Intl

Mon 11/5

17:51-23:59

Nonstop4h 08m

£288

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Sat 30/5

06:30-08:52

Nonstop4h 22m

Seattle/Tacoma Intl

Sun 31/5

12:40-23:54

1 stop9h 14m

£295

DallasSeattle

DFW - SEA

DFWSEA

Dallas/Fort Worth

Tue 19/5

06:30-08:52

Nonstop4h 22m

Seattle/Tacoma Intl

Mon 25/5

09:15-15:18

Nonstop4h 03m

£299

Flights are sorted by cheapest return flights first.

Deals found on 10/4

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?

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 3 April 2026.

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 60 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, December is the cheapest month in which you can book a flight from Dallas/Fort Worth Airport to Seattle (average of £87). Flying from Dallas/Fort Worth Airport to Seattle in May is currently the most expensive (average of £141). 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 April 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 50% 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?

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 31 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 can get you from Dallas/Fort Worth Airport to Seattle in just under 4h 32m. 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 Condor (93%), Air Tahiti Nui (90%) or Alaska Airlines (90%) 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 £169, our data indicates the cheapest price to be £169. The most popular route (Dallas/Fort Worth - Seattle/Tacoma Intl), is priced around £225.

  • 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, December is the cheapest month in which you can book a flight from Dallas/Fort Worth Airport to Seattle (average of £87). Flying from Dallas/Fort Worth Airport to Seattle in May is currently the most expensive (average of £141). 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
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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