Alaska offers 32” legroom in Main Cabin, ideal for medium-haul comfort.
Alaska's Wi-Fi is a flat fee, great for work on longer flights.

Round-trip from | $161 (Kiwi.com) |
|---|---|
One-way from | $91 (Mytrip) |
Popular in | July |
Cheapest in | January |
Average price | $303 |
Fly from
Fly to
Route
Depart
Return
Price
DallasSeattle
DAL - SEA
DALSEA
Dallas Love Field
Thu 1/15
6:00 am-12:15 pm
1 stop8h 15m
Seattle/Tacoma Intl
Sat 1/24
12:00 pm-8:40 pm
1 stop6h 40m
DallasSeattle
DAL - SEA
DALSEA
Dallas Love Field
Sun 3/8
5:35 pm-12:20 am
1 stop8h 45m
Seattle/Tacoma Intl
Wed 3/11
5:30 am-7:30 pm
2 stops12h 00m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Thu 2/5
6:45 am-12:57 pm
1 stop8h 12m
Seattle/Tacoma Intl
Sun 2/8
5:55 pm-11:45 pm
Nonstop3h 50m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Tue 1/20
6:45 am-12:57 pm
1 stop8h 12m
Seattle/Tacoma Intl
Tue 1/27
5:55 pm-11:45 pm
Nonstop3h 50m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Tue 2/17
12:30 pm-4:48 pm
1 stop6h 18m
Seattle/Tacoma Intl
Sat 2/21
5:55 pm-11:45 pm
Nonstop3h 50m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Fri 2/20
2:59 pm-8:46 pm
1 stop7h 47m
Seattle/Tacoma Intl
Sun 2/22
6:35 pm-12:25 am
Nonstop3h 50m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Wed 2/18
6:02 pm-12:09 am
1 stop8h 07m
Seattle/Tacoma Intl
Sun 2/22
6:35 pm-12:25 am
Nonstop3h 50m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Tue 3/31
6:00 am-8:29 am
Nonstop4h 29m
Seattle/Tacoma Intl
Sat 4/4
12:23 am-6:20 am
Nonstop3h 57m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Tue 1/13
8:10 am-10:45 am
Nonstop4h 35m
Seattle/Tacoma Intl
Sun 1/18
9:30 am-3:28 pm
Nonstop3h 58m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Fri 2/6
6:45 am-2:54 pm
1 stop10h 09m
Seattle/Tacoma Intl
Tue 2/10
5:55 pm-11:45 pm
Nonstop3h 50m
Booking 38 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dallas to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, January is the cheapest month in which you can book a flight from Dallas to Seattle (average of $65). Flying from Dallas to Seattle in June is currently the most expensive (average of $166). 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.
It’s optimal to fly from Dallas to Seattle in the evening. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight in the afternoon.
Travelers seeking maximum savings on their Dallas to Seattle flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from A78 to SEA are scheduled on a Monday (59 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (18 on average).
About 19% of weekly flights between Dallas and Seattle have experienced delays in the past year, with the average delay time being 157 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Friday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Frontier have had the lowest number of delays on this route, with just 11% of flights being delayed.
Entertainment
Boarding
Food
Overall
Comfort
Crew
Reviews
Anonymous,Dec 2025
SJC - SEA
Entertainment
Boarding
Food
Overall
Comfort
Crew
Reviews
Anonymous,Dec 2025
SJC - SEA
Entertainment
Boarding
Food
Overall
Comfort
Crew
Reviews
Anonymous,Dec 2025
SJC - SEA
Entertainment
Boarding
Food
Overall
Comfort
Crew
Reviews
Anonymous,Dec 2025
SJC - SEA
Entertainment
Boarding
Food
Overall
Comfort
Crew
Reviews
Anonymous,Dec 2025
SJC - SEA
Entertainment
Boarding
Food
Overall
Comfort
Crew
Reviews
Anonymous,Dec 2025
SJC - SEA
The airport in Seattle that you’ll get off your flight at is Seattle – Tacoma International Airport. Some people call it Sea-Tac Airport. It’s the main airport that services flights to the Seattle metro region in Washington state. The airport is 14 miles away from the Seattle downtown area, in a city called SeaTac. This airport is the biggest one operating in the Pacific Northwest. It’s a hub for Alaskan Airlines and is also a connector for many flights going to Asia.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$67 | Average$211 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$76 | Average$168 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$123 | Average$279 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$133 | Average$281 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$165 | Average$371 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$174 | Average$334 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$183 | Average$306 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$186 | Average$391 | FlexibilityNo cancel fee | On-time71% |