Cheap flights from Seattle to Dallas from $139

If you are unable to visit Dallas during the month of October, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $103.

On average, the least expensive day to fly to Dallas from Seattle is on a Thursday. momondo users have found tickets for Thursday departures for as low as $452. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $555.

Flying to Dallas from Seattle in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $360 when looking at flights departing in the afternoon. In the evening is when there is more demand to fly to Dallas, so prices are often more expensive at around $526 per ticket.

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

You are more likely to see cheaper flights to Dallas from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Dallas for around $345 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dallas from Seattle for as low as $277 on momondo.

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

Frontier, Southwest, and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Dallas

Alaska Airlines, American Airlines and Delta are the top three most popular airlines that fly to Dallas from Seattle according to our data. Alaska Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Dallas. Keep in mind that there are 7 different airlines that fly to Dallas 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 148 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, American Airlines have had the least number of delays on this route over the last 12 months; with about 13% of their flights experiencing any sort of delay.

As of June 2026, there are 45 flights per day flying from Seattle to Dallas. The most common time of day flights depart is 7:00AM, with 46% of flights taking off at noon.

As of June 2026, there are 319 flights per week flying from Seattle to Dallas. The most common day of the week flights depart is Tue, with 18% of flights taking off on this day.