£66 Cheap Flights from Dallas (DFW) to Seattle (SEA)

View £66 flight on Sat, 10 Jan 2026Opens in a new window

Popular airlines from Dallas-Fort Worth International Airport (DFW) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Dallas (DFW) to Seattle (SEA)

Prices were available within the past 7 days and start at £66 for one-way flights and £163 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 17 Dec - Wed, 24 Dec
DFW
Dallas
SEA
Seattle
£163 Return, found 5 hours ago
£163
Return
found 5 hours ago
Select Alaska Airlines flight, departing Wed, 17 Dec from Dallas to Seattle, returning Wed, 24 Dec, priced at £163 found 5 hours ago
Alaska Airlines
Sat, 20 Sep - Tue, 23 Sep
DFW
Dallas
SEA
Seattle
£177 Return, just found
£177
Return
just found
Select Alaska Airlines flight, departing Sat, 20 Sep from Dallas to Seattle, returning Tue, 23 Sep, priced at £177 just found
Alaska Airlines
Wed, 29 Oct - Wed, 5 Nov
DFW
Dallas
SEA
Seattle
£184 Return, found 3 days ago
£184
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 29 Oct from Dallas to Seattle, returning Wed, 5 Nov, priced at £184 found 3 days ago
Alaska Airlines
Mon, 20 Oct - Wed, 22 Oct
DFW
Dallas
SEA
Seattle
£189 Return, found 5 days ago
£189
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 20 Oct from Dallas to Seattle, returning Wed, 22 Oct, priced at £189 found 5 days ago
Alaska Airlines
Wed, 17 Dec - Wed, 24 Dec
DFW
Dallas
SEA
Seattle
£191 Return, found 5 hours ago
£191
Return
found 5 hours ago
Select Alaska Airlines flight, departing Wed, 17 Dec from Dallas to Seattle, returning Wed, 24 Dec, priced at £191 found 5 hours ago
Hawaiian Airlines
Sat, 20 Sep - Thu, 25 Sep
DFW
Dallas
SEA
Seattle
£195 Return, just found
£195
Return
just found
Select Hawaiian Airlines flight, departing Sat, 20 Sep from Dallas to Seattle, returning Thu, 25 Sep, priced at £195 just found
Alaska Airlines
Wed, 17 Dec - Wed, 24 Dec
DFW
Dallas
SEA
Seattle
£198 Return, found 5 hours ago
£198
Return
found 5 hours ago
Select Alaska Airlines flight, departing Wed, 17 Dec from Dallas to Seattle, returning Wed, 24 Dec, priced at £198 found 5 hours ago
American Airlines
Mon, 22 Sep - Fri, 26 Sep
DFW
Dallas
SEA
Seattle
£224 Return, just found
£224
Return
just found
Select American Airlines flight, departing Mon, 22 Sep from Dallas to Seattle, returning Fri, 26 Sep, priced at £224 just found
Delta
Mon, 22 Sep - Fri, 26 Sep
DFW
Dallas
SEA
Seattle
£231 Return, just found
£231
Return
just found
Select Delta flight, departing Mon, 22 Sep from Dallas to Seattle, returning Fri, 26 Sep, priced at £231 just found
United
Mon, 22 Sep - Fri, 26 Sep
DFW
Dallas
SEA
Seattle
£272 Return, just found
£272
Return
just found
Select United flight, departing Mon, 22 Sep from Dallas to Seattle, returning Fri, 26 Sep, priced at £272 just found

Find the cheapest month to fly from Dallas (DFW) to Seattle (SEA)

March is typically the cheapest month to fly

From £70 - £243 per traveller.

Graph displaying average flight prices per month

Flight from Dallas to Seattle route information
Origin airport
Dallas-Fort Worth Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines
Return price
£162
Distance
2651 km
Average flight time
2 hours 16 mins

Compare flights from Dallas to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Dallas to Seattle. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Dallas-Fort Worth Intl. to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Dallas-Fort Worth Intl. (DFW) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Dallas to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Dallas-Fort Worth Intl. to Seattle - Tacoma Intl. start at just £163 and range up to £272.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Dallas and Seattle
  • booking your flight during December, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Dallas to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Dallas-Fort Worth Intl. to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from Dallas-Fort Worth Intl. Airport (DFW) to Sea-Tac Airport?
Based on fares offered within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from Dallas-Fort Worth Intl. Airport (DFW) to SEA start from £163. Make your booking ASAP to secure the best price for your exciting adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from DFW Airport to Seattle - Tacoma Intl. Airport (SEA)?
The majority of flights can be conveniently cancelled online, but whether you incur a fee all comes down to your airline. If you do have to cancel your getaway, follow the instructions in the Customer Service Portal.
How do I find cheap flights from DFW Airport to SEA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Dallas-Fort Worth Intl. Airport (DFW) to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from DFW Airport to SEA?
Around 2,700 kilometres separates Dallas and SeaTac, so pack something to help you fill in a few hours. That gripping novel you haven't had time to finish will do the trick.
Which airlines fly direct from Dallas Airport to SEA?
American Airlines (AA) is one of the preferred choices for many travellers flying between Dallas-Fort Worth Intl. Airport (DFW) and SEA. Choose from the 173 flights it offers on this route each month. Operating 139 flights per month on this route, Alaska Airlines (AS) is another good option.
Are Dallas Airport to SEA flight tickets cheaper when they're purchased at the last minute?
Flight tickets from Dallas Airport to Seattle - Tacoma Intl. Airport (SEA) are available up to a year before departure on Expedia. And although you may score great last-minute deal, it's not something you should bank on. Also, booking your flights in advance means you'll have more options — and you can avoid getting stuck in the dreaded middle seat! We're constantly updating our fares to make sure you get the biggest bargains, so keep checking in for all the latest specials.

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