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 | $176 (Expedia) |
|---|---|
One-way from | $84 (Trip.com) |
Popular in | July |
Cheapest in | January |
Average price | $267 |
Fly from
Fly to
Route
Depart
Return
Price
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Tue 12/23
9:27 pm-12:02 am
Nonstop4h 35m
Seattle/Tacoma Intl
Wed 1/7
6:02 pm-11:58 pm
Nonstop3h 56m
DallasSeattle
DAL - SEA
DALSEA
Dallas Love Field
Sun 1/18
7:00 am-1:15 pm
1 stop8h 15m
Seattle/Tacoma Intl
Sat 1/24
7:00 am-5:05 pm
1 stop8h 05m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Fri 12/5
7:10 am-9:50 am
Nonstop4h 40m
Seattle/Tacoma Intl
Fri 12/12
5:55 pm-11:50 pm
Nonstop3h 55m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Tue 12/9
3:00 pm-5:33 pm
Nonstop4h 33m
Seattle/Tacoma Intl
Sun 12/14
12:45 am-6:40 am
Nonstop3h 55m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Sun 12/7
7:10 am-9:50 am
Nonstop4h 40m
Seattle/Tacoma Intl
Sat 12/13
5:55 pm-11:50 pm
Nonstop3h 55m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Thu 12/11
6:17 pm-8:50 pm
Nonstop4h 33m
Seattle/Tacoma Intl
Sat 12/13
12:45 am-6:40 am
Nonstop3h 55m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Mon 12/8
7:10 am-9:50 am
Nonstop4h 40m
Seattle/Tacoma Intl
Tue 12/16
5:55 pm-11:50 pm
Nonstop3h 55m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Sun 12/7
8:40 pm-11:11 pm
Nonstop4h 31m
Seattle/Tacoma Intl
Fri 12/12
12:45 am-6:40 am
Nonstop3h 55m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Sat 12/13
7:10 am-9:50 am
Nonstop4h 40m
Seattle/Tacoma Intl
Tue 12/16
2:05 pm-11:34 pm
1 stop7h 29m
DallasSeattle
DFW - SEA
DFWSEA
Dallas/Fort Worth
Thu 12/18
7:10 am-9:50 am
Nonstop4h 40m
Seattle/Tacoma Intl
Thu 1/1
6:10 am-6:04 pm
1 stop9h 54m
Booking 34 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 $62). 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 20% 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 Thursday (57 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (26 on average).
Food
Crew
Comfort
Entertainment
Overall
Boarding
Reviews
Anonymous,Aug 2025
MFR - SEA
Food
Crew
Comfort
Entertainment
Overall
Boarding
Reviews
Anonymous,Aug 2025
MFR - SEA
Food
Crew
Comfort
Entertainment
Overall
Boarding
Reviews
Anonymous,Aug 2025
MFR - SEA
Food
Crew
Comfort
Entertainment
Overall
Boarding
Reviews
Anonymous,Aug 2025
MFR - SEA
Food
Crew
Comfort
Entertainment
Overall
Boarding
Reviews
Anonymous,Aug 2025
MFR - SEA
Food
Crew
Comfort
Entertainment
Overall
Boarding
Reviews
Anonymous,Aug 2025
MFR - 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$69 | Average$212 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$77 | Average$181 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$123 | Average$279 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$130 | Average$282 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$165 | Average$377 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$183 | Average$306 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$186 | Average$358 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$192 | Average$397 | FlexibilityNo cancel fee | On-time71% |