Cheap flights from Seattle to Dallas from $158

The cheapest month to fly to Dallas/Fort Worth Airport from Seattle is in January. Flight prices, which tend to average around $289, are often lower during this time because this is during the off-season. If you’re not able to fly to Dallas/Fort Worth Airport in January, then October is your next best option. Flight prices from Seattle to Dallas/Fort Worth Airport during October average around $293.

On average, the least expensive day to fly to Dallas/Fort Worth Airport from Seattle is on a Thursday. momondo users have found tickets for Thursday departures for as low as $458. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Dallas/Fort Worth Airport for around $560.

Flying to Dallas/Fort Worth Airport from Seattle in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $383 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $533 on average. Flights to Dallas/Fort Worth Airport from Seattle in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Seattle/Tacoma Intl to Dallas/Fort Worth for the best Seattle/Tacoma Intl - Dallas/Fort Worth flight prices

You are more likely to see cheaper flights to Dallas/Fort Worth Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Dallas/Fort Worth Airport for around $363 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dallas/Fort Worth Airport from Seattle for as low as $296 on momondo.

There are 4 cabin classes available to choose from on Seattle to Dallas/Fort Worth Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 22% on your flight if you consider stops on a Seattle to Dallas/Fort Worth Airport flight.

As of August 2026, prices for Seattle to Dallas/Fort Worth Airport flights are approximately 57% more expensive when compared to flights at the same time last year.

Delta, Alaska Airlines, and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Dallas/Fort Worth

Alaska Airlines, American Airlines and Delta are the top three most popular airlines that fly to Dallas/Fort Worth Airport from Seattle according to our data. Alaska Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Dallas/Fort Worth Airport. Keep in mind that there are 7 different airlines that fly to Dallas/Fort Worth Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 14% of flights between Seattle and Dallas have experienced a delay on any given week. The average delay length over the past 12 months has been 150 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Alaska Airlines have had the least number of delays on this route over the last 12 months; with about 12% of their flights experiencing any sort of delay.

Denver (DEN) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Denver (DEN) offer the lowest average round-trip price of $320.

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 7h 36m.

Denver (DEN) has the shortest average layover time for this route: 4h 20m.

The number of flights available between Seattle and Dallas/Fort Worth Airport is 19 per day as of August 2026. The most frequent departure time is 7:00AM, with 42% of daily flights leaving at noon.

As of August 2026, there are 134 flights per week flying from Seattle to Dallas/Fort Worth Airport. The most common day of the week flights depart is Mon, with 37% of flights taking off on this day.