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$116+ Cheap flights from Seattle (SEA) to Dallas

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 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DFW
Jun 7 — Jun 141
Sun 6/7
Sun 6/14
1 adult, Economy
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Find cheap flights from Seattle to Dallas with Cheapflights

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Dallas are usually found in August or October, booked 89 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap flight deals from Seattle to Dallas

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 May 8, 2026.

This Frontier deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:50 pm
SEA
-
DFW
1 stop10h 17m
Frontier
Tue 5/267:11 am
DFW
-
SEA
1 stop13h 24m
Frontier
Deal found 5/4$240
This CheapOair deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1411:54 am
SEA
-
DFW
1 stop10h 04m
Frontier
Tue 7/2110:48 pm
DFW
-
SEA
1 stop13h 51m
Frontier
Deal found 5/4$241
This Super.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2411:51 am
SEA
-
DFW
1 stop23h 21m
Frontier
Mon 6/110:17 pm
DFW
-
SEA
1 stop13h 49m
Frontier
Deal found 5/3$242
This Frontier deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/111:53 am
SEA
-
DFW
1 stop10h 06m
Frontier
Thu 7/95:18 am
DFW
-
SEA
1 stop6h 31m
Frontier
Deal found 5/4$244
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:50 pm
SEA
-
DFW
1 stop10h 17m
Frontier
Tue 6/25:43 pm
DFW
-
SEA
2 stops26h 52m
Frontier
Deal found 5/3$245
This Trip.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/283:19 pm
SEA
-
DFW
1 stop7h 19m
Frontier
Sat 5/305:18 am
DFW
-
SEA
1 stop6h 48m
Frontier
Deal found 5/5$246
This Trip.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:50 pm
SEA
-
DFW
1 stop10h 17m
Frontier
Wed 6/37:20 am
DFW
-
SEA
1 stop13h 15m
Frontier
Deal found 5/6$247
This Booking.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:50 pm
SEA
-
DFW
1 stop10h 17m
Frontier
Wed 5/275:18 am
DFW
-
SEA
1 stop6h 48m
Frontier
Deal found 5/5$248
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:50 pm
SEA
-
DFW
1 stop26h 48m
Frontier
Sat 6/610:17 pm
DFW
-
SEA
1 stop17h 44m
Frontier
Deal found 5/4$249
This Frontier deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/303:34 pm
SEA
-
DFW
1 stop6h 55m
Frontier
Mon 8/35:18 am
DFW
-
SEA
1 stop6h 31m
Frontier
Deal found 5/5$250
This Trip.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/293:19 pm
SEA
-
DFW
1 stop7h 45m
Frontier
Mon 6/110:17 pm
DFW
-
SEA
1 stop13h 49m
Frontier
Deal found 5/5$251
This Booking.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/87:50 pm
SEA
-
DFW
1 stop22h 46m
Frontier
Mon 6/155:18 am
DFW
-
SEA
1 stop6h 30m
Frontier
Deal found 5/5$252

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 May 8, 2026.

Round-trip from

$240
(CheapOair)

One-way from

$116
(Kiwi.com)

Popular in

May

Cheapest in

August

Average price

$374
From Seattle/Tacoma Intl to Dallas
Search Deals
One-way flight from Seattle/Tacoma Intl to Dallas
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 2,558,603 searches. Data last updated May 8, 2026.
Use the filters below to find and compare flights from Seattle to Dallas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleDallas

SEA - DAL

SEADAL

Seattle/Tacoma Intl

Wed 7/8

6:15 am-2:10 pm

1 stop5h 55m

Dallas Love Field

Wed 7/15

8:20 pm-12:40 am

1 stop6h 20m

$372

SeattleDallas

SEA - DFW

SEADFW

Seattle/Tacoma Intl

Sat 5/30

5:54 pm-11:59 pm

Nonstop4h 05m

Dallas/Fort Worth

Wed 6/10

6:20 am-8:40 am

Nonstop4h 20m

$374

SeattleDallas

SEA - DAL

SEADAL

Seattle/Tacoma Intl

Tue 6/9

6:15 am-2:10 pm

1 stop5h 55m

Dallas Love Field

Wed 6/10

6:15 pm-12:30 am

2 stops8h 15m

$378

SeattleDallas

SEA - DAL

SEADAL

Seattle/Tacoma Intl

Wed 6/3

1:25 pm-10:00 pm

1 stop6h 35m

Dallas Love Field

Thu 6/4

6:30 pm-12:50 am

2 stops8h 20m

$390

SeattleDallas

SEA - DAL

SEADAL

Seattle/Tacoma Intl

Mon 6/1

6:15 am-7:00 pm

2 stops10h 45m

Dallas Love Field

Sat 6/6

7:25 pm-1:10 am

1 stop7h 45m

$395

SeattleDallas

SEA - DAL

SEADAL

Seattle/Tacoma Intl

Thu 6/4

6:45 am-5:05 pm

1 stop8h 20m

Dallas Love Field

Mon 6/8

4:55 pm-11:05 pm

2 stops8h 10m

$398

SeattleDallas

SEA - DFW

SEADFW

Seattle/Tacoma Intl

Tue 6/16

5:56 pm-11:59 pm

Nonstop4h 03m

Dallas/Fort Worth

Tue 6/30

6:03 pm-8:24 pm

Nonstop4h 21m

$401

SeattleDallas

SEA - DFW

SEADFW

Seattle/Tacoma Intl

Wed 6/24

5:55 pm-11:59 pm

Nonstop4h 04m

Dallas/Fort Worth

Tue 6/30

2:31 pm-6:36 pm

1 stop6h 05m

$401

SeattleDallas

SEA - DAL

SEADAL

Seattle/Tacoma Intl

Fri 8/28

5:00 am-1:05 pm

1 stop6h 05m

Dallas Love Field

Tue 9/1

11:45 am-6:10 pm

2 stops8h 25m

$402

SeattleDallas

SEA - DAL

SEADAL

Seattle/Tacoma Intl

Tue 9/1

7:10 am-5:40 pm

1 stop8h 30m

Dallas Love Field

Sun 9/6

10:40 am-4:25 pm

Nonstop7h 45m

$402

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Showing 1-10 of 42 resultsSorted by cheapest first
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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?

To ensure you get the cheapest price possible for a flight from Seattle to Dallas, you should look to book at least 88 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, October is the cheapest month in which you can book a flight from Seattle to Dallas (average of $86). Flying from Seattle to Dallas in December is currently the most expensive (average of $710). 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 May 8, 2026.

One of the essential ways to save on airfare from Seattle to Dallas is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 26% on airfare.

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 April 25, 2026.

Travelers seeking maximum savings on their Seattle to Dallas flight should consider departing on Saturday at noon when fares are most often at their lowest. Saturday evenings 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 May 8, 2026.

The most flights from SEA to A78 are scheduled on a Wednesday (43 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (31 on average).

How much does it cost to fly round-trip from Seattle to Dallas?

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 149 minutes.

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

Historically, flights departing at night 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 last year, American Airlines have had the lowest number of delays on this route, with just 14% of flights being delayed.

The best insider tips for Seattle to Dallas flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Dallas trip
Our travel experts
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Marisa Garcia

Marisa Garcia

Expert on Frontier

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Chris Dong

Chris Dong

Expert on DFW

Chris is a consumer travel reporter covering aviation, trending travel news, hotels, and loyalty programs—all for leading global publications like Travel + Leisure, The Washington Post, AFAR, and more. In addition to writing, Chris is a video host for Travel + Leisure, giving consumers an inside look at the latest in air travel.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Paul Rubio

Paul Rubio

Expert on DAL

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more

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 May 8, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, andDelta from Seattle to Dallas have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,345 reviews

Boarding

8.1

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
7.9
Good
12,345 reviews
Alaska Airlines
7.9
Good
12,345 reviews

Boarding

8.1

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Southwest
7.9
Good
4,302 reviews
Alaska Airlines
7.9
Good
12,345 reviews

Boarding

8.1

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,457 reviews
Alaska Airlines
7.9
Good
12,345 reviews

Boarding

8.1

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
American Airlines
7.1
Good
11,669 reviews
Alaska Airlines
7.9
Good
12,345 reviews

Boarding

8.1

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Frontier
5.6
Fair
2,961 reviews
Alaska Airlines
7.9
Good
12,345 reviews

Boarding

8.1

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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?

    For a flight from Seattle to Dallas, you will be flying from 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 37 outbound flights to Dallas per day. 8 airlines have flights to Dallas from Seattle/Tacoma Intl on a regular basis.

  • How long is the flight from Seattle to Dallas?

    Southwest, Delta, and Alaska Airlines can get you from Seattle to Dallas in just under 4h 03m. Your travel time can differ by up to 1h 52m. The distance from Seattle to Dallas is about 1657 mi. This flight may include one or multiple stops.

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

    Currently priced at $85, Frontier will fly you from Seattle to Dallas and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and Hawaiian Airlines - these airlines can fly you to your destination from $106 and $117, respectively. Frontier is 73% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Dallas one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $67. Users have also found prices from $80 and $89 on Spirit Airlines and Delta, respectively.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Dallas on time: STARLUX Airlines (89%), British Airways (89%), Finnair (88%).

  • What are the cheapest flights from Seattle to Dallas?

    On average you can expect to pay $778 for a flight from Seattle to Dallas. The cheapest flight overall is $150 while the most popular route, (Seattle/Tacoma Intl - Dallas/Fort Worth) is currently priced at $228.

  • 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, October is the cheapest month in which you can book a flight from Seattle to Dallas (average of $86). Flying from Seattle to Dallas in December is currently the most expensive (average of $710). 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.

Top 8 airlines flying from Seattle to Dallas

Discover the top 8 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 2,558,603 searches. Data last updated May 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$85Average$217FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$106Average$228FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$117Average$304FlexibilityNo cancel feeOn-time85%
DeltaCheapest$142Average$423FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$177Average$371FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$187Average$339FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$191Average$376FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$249Average$426FlexibilityNo cancel feeOn-time69%

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