Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Seattle to Dallas from C$ 123

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DFW
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Dallas are usually found in August or January, booked 59 days in advance, depart on a Friday or Wednesday and return on a Monday

Cheap flight deals from Seattle to Dallas

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Dallas
Explore the most affordable flight options available from Seattle to Dallas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 December 2025.

Wed 31/121:25 p.m.SEA - DFW
1 stop8h 44mFrontier
Sun 4/110:54 p.m.DFW - SEA
2 stops17h 00mFrontier
Deal found 10/12C$ 299
Mon 15/1212:48 p.m.SEA - DFW
1 stop6h 53mFrontier
Mon 5/16:05 a.m.DFW - SEA
1 stop13h 33mFrontier
Deal found 10/12C$ 350
Sun 14/1210:51 a.m.SEA - DFW
1 stop8h 27mFrontier
Mon 5/17:15 a.m.DFW - SEA
1 stop7h 15mFrontier
Deal found 11/12C$ 352
Mon 15/1212:48 p.m.SEA - DFW
1 stop6h 53mFrontier
Tue 6/18:00 a.m.DFW - SEA
1 stop11h 51mFrontier
Deal found 10/12C$ 383
Tue 30/121:07 a.m.SEA - DFW
Nonstop3h 53mAlaska Airlines
Tue 6/16:26 a.m.DFW - SEA
1 stop11h 35mAlaska Airlines
Deal found 10/12C$ 388
Mon 15/1212:48 p.m.SEA - DFW
1 stop6h 53mFrontier
Thu 1/110:47 p.m.DFW - SEA
1 stop13h 24mFrontier
Deal found 10/12C$ 392
Mon 15/123:40 p.m.SEA - DFW
1 stop6h 29mFrontier
Fri 2/17:15 a.m.DFW - SEA
1 stop7h 15mFrontier
Deal found 11/12C$ 397
Mon 15/1212:48 p.m.SEA - DFW
1 stop6h 53mMultiple Airlines
Mon 5/19:27 p.m.DFW - SEA
Nonstop4h 35mMultiple Airlines
Deal found 10/12C$ 399
Mon 15/129:45 a.m.SEA - DFW
Nonstop3h 48mFrontier
Tue 23/126:05 a.m.DFW - SEA
1 stop13h 33mFrontier
Deal found 10/12C$ 400
Tue 30/121:07 a.m.SEA - DFW
Nonstop3h 53mAlaska Airlines
Mon 5/19:27 p.m.DFW - SEA
Nonstop4h 35mAlaska Airlines
Deal found 11/12C$ 403
Tue 30/125:00 a.m.SEA - DAL
1 stop6h 05mSouthwest
Tue 6/14:50 p.m.DAL - SEA
1 stop7h 40mSouthwest
Deal found 9/12C$ 423
Sun 28/126:45 a.m.SEA - DAL
1 stop9h 45mSouthwest
Tue 6/14:50 p.m.DAL - SEA
1 stop7h 40mSouthwest
Deal found 9/12C$ 492

Find flight deals from Seattle to Dallas

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Dallas (A78). 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 12 December 2025.

Round-trip from

C$ 244

One-way from

C$ 123

Popular in

December

Cheapest in

August

Average price

C$ 502
Delta
  • Delta
  • 17/1-20/1
  • Nonstop
  • 8h 23m total
  • Seattle to Dallas
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 16/1
  • Nonstop
  • 3h 56m total
  • Seattle to Dallas
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Dallas 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 629,999 searches. Data last updated 12 December 2025.
Use the filters below to find and compare flights from Seattle to Dallas that are best for you.

Fly from

Seattle

Fly to

Dallas

Route

Depart

Return

Price

SeattleDallas

SEA - DFW

SEADFW

Seattle/Tacoma Intl

Thu 5/2

9:52 a.m.-3:51 p.m.

Nonstop3h 59m

Dallas/Fort Worth

Sun 8/2

10:00 a.m.-12:39 p.m.

Nonstop4h 39m

C$ 244

SeattleDallas

SEA - DAL

SEADAL

Seattle/Tacoma Intl

Sat 10/1

7:00 a.m.-5:05 p.m.

1 stop8h 05m

Dallas Love Field

Sat 17/1

4:40 p.m.-9:05 p.m.

1 stop6h 25m

C$ 272

SeattleDallas

SEA - DFW

SEADFW

Seattle/Tacoma Intl

Fri 20/2

6:05 a.m.-7:04 p.m.

1 stop10h 59m

Dallas/Fort Worth

Tue 24/2

6:00 a.m.-8:33 a.m.

Nonstop4h 33m

C$ 273

SeattleDallas

SEA - DFW

SEADFW

Seattle/Tacoma Intl

Fri 13/2

5:30 a.m.-1:44 p.m.

1 stop6h 14m

Dallas/Fort Worth

Mon 16/2

6:00 a.m.-8:33 a.m.

Nonstop4h 33m

C$ 285

SeattleDallas

SEA - DAL

SEADAL

Seattle/Tacoma Intl

Thu 8/1

6:45 a.m.-6:55 p.m.

1 stop10h 10m

Dallas Love Field

Mon 12/1

9:15 a.m.-3:40 p.m.

1 stop8h 25m

C$ 299

SeattleDallas

SEA - DFW

SEADFW

Seattle/Tacoma Intl

Wed 7/1

11:25 a.m.-9:16 p.m.

1 stop7h 51m

Dallas/Fort Worth

Thu 15/1

6:45 a.m.-12:57 p.m.

1 stop8h 12m

C$ 299

SeattleDallas

SEA - DFW

SEADFW

Seattle/Tacoma Intl

Sat 24/1

9:25 a.m.-5:28 p.m.

1 stop6h 03m

Dallas/Fort Worth

Sat 31/1

8:10 a.m.-12:33 p.m.

1 stop6h 23m

C$ 299

SeattleDallas

SEA - DFW

SEADFW

Seattle/Tacoma Intl

Wed 18/2

10:51 p.m.-4:40 a.m.

Nonstop3h 49m

Dallas/Fort Worth

Wed 25/2

5:39 p.m.-10:18 p.m.

1 stop6h 39m

C$ 313

SeattleDallas

SEA - DFW

SEADFW

Seattle/Tacoma Intl

Thu 15/1

8:25 a.m.-5:14 p.m.

1 stop6h 49m

Dallas/Fort Worth

Tue 20/1

8:00 a.m.-10:38 a.m.

Nonstop4h 38m

C$ 327

SeattleDallas

SEA - DAL

SEADAL

Seattle/Tacoma Intl

Mon 5/1

6:35 a.m.-6:50 p.m.

1 stop10h 15m

Dallas Love Field

Thu 8/1

6:30 a.m.-12:05 p.m.

1 stop7h 35m

C$ 341

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 43 results
1
2
3
...
5

Best time to book a flight from Seattle to Dallas

Have a flexible travel schedule? Discover the best time to fly to Dallas from Seattle with our price prediction graph.
Estimated round-trip 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 Seattle to Dallas

How far ahead should I book a flight from Seattle to Dallas?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Dallas. Price data was last updated on 5 December 2025.

Booking 59 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Dallas. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Dallas?

Currently, January is the cheapest month in which you can book a flight from Seattle to Dallas (average of C$ 112). Flying from Seattle to Dallas in December is currently the most expensive (average of C$ 223). 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 SEA to DFW?

Find hourly flight availability from Seattle to Dallas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 December 2025.

It’s typically best to fly out from Seattle to Dallas in the evening. Doing so could potentially save you 49% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Seattle to Dallas?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Dallas. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Seattle to Dallas flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Dallas

Explore weekly flight availability from Seattle to Dallas. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 12 December 2025.

The most flights from SEA to A78 are scheduled on a Thursday (59 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (37 on average).

How often are flights from Seattle to Dallas delayed?

About 15% of weekly flights between Seattle and Dallas have experienced delays in the past year, with the average delay time being 144 minutes.

What is the most punctual flight time for Seattle to Dallas flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Seattle to Dallas flights?

Over the past year, American Airlines has had the lowest number of delays on this route, with just 13% of flights being delayed.

Reviews of airlines servicing Dallas

Get insights into the airlines that provide service to Dallas. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dallas. Reviews last updated 12 December 2025.
Read reviews from past customers who have flown Alaska Airlines,Hawaiian Airlines, andAmerican Airlines from Seattle to Dallas. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,432 reviews
Check prices

Boarding

8.1

Food

7.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,432 reviews
Alaska Airlines
8.0
Very good
11,432 reviews
Check prices

Boarding

8.1

Food

7.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Hawaiian Airlines
7.8
Good
2,817 reviews
Alaska Airlines
8.0
Very good
11,432 reviews
Check prices

Boarding

8.1

Food

7.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
American Airlines
7.2
Good
11,049 reviews
Alaska Airlines
8.0
Very good
11,432 reviews
Check prices

Boarding

8.1

Food

7.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Spirit Airlines
6.3
Okay
8,180 reviews
Alaska Airlines
8.0
Very good
11,432 reviews
Check prices

Boarding

8.1

Food

7.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Frontier
5.8
Fair
3,084 reviews
Alaska Airlines
8.0
Very good
11,432 reviews
Check prices

Boarding

8.1

Food

7.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Dallas. 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 from for flights from Seattle to Dallas?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Dallas. On average, Seattle/Tacoma Intl has 45 outbound flights to Dallas per day from 6 airlines. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

  • How long is the flight from Seattle to Dallas?

    Departing from Seattle to Dallas will take you 3h 59m. The distance from Seattle to Dallas is about 2667 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from Seattle to Dallas round-trip?

    Frontier, at C$ 78, was found to be the cheapest airline from Seattle to Dallas.Alternate airlines to your destination round-trip include Spirit Airlines and Delta. Users have found that Frontier is 80% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Seattle to Dallas?

    Consider Finnair (91%), Air Tahiti Nui (89%) or KLM (89%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Dallas.

  • What are the cheapest flights from Seattle to Dallas?

    The cheapest flight price from Seattle to Dallas is C$ 45. On average you can expect to pay C$ 617. The most popular route, (Seattle/Tacoma Intl - Dallas/Fort Worth), can usually be booked for C$ 250.

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

    Yes. In addition to deals on Seattle to Dallas flights, Cheapflights offers vacation packages that include both flights and hotel.

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Dallas 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 Seattle to Dallas?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Dallas (average of C$ 112). Flying from Seattle to Dallas in December is currently the most expensive (average of C$ 223). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Dallas

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Dallas/Fort Worth flights
Seattle to Austin flights
Seattle to Hobby flights
Seattle to George Bush Intcntl flights
Bellingham to Dallas/Fort Worth flights

Top 6 airlines flying from Seattle to Dallas

Discover the top 6 airlines that operate flights from Seattle to Dallas. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapestC$ 103AverageC$ 268FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapestC$ 104AverageC$ 329FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 163AverageC$ 367FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
American AirlinesCheapestC$ 166AverageC$ 333FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Hawaiian AirlinesCheapestC$ 168AverageC$ 335FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
Spirit AirlinesCheapestC$ 209AverageC$ 320FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Dallas?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Dallas. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dallas from Seattle.

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

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

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

Of course! You can now track prices for flights from Seattle to Dallas and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.