Category: secretflying

Sample Travel Date:

• November 1st – 4th

• This is just ONE SAMPLE travel date, for more availability, please follow the “Fare Availability” and “How to Search for Availability” instructions below

Fare Availability:

• Valid for travel until early November or early December or January 2026 for Tuesday, Wednesday and Saturday departures and returns. Availability is limited. Must purchase at least 7 days in advance of departure

• Please note that while this fare is valid at time of posting, if this post is more than two days old, the fare is likely gone.

How to Search for Availability:

• This is just to search for availability. To buy your tickets, scroll down to “How to Buy” section of this post

• Use Matrix Airfare Search by ITA Software and use the following search criteria:
  • Origin: SEA
  • Origin Advanced Routing Code:
    • Routing Codes: DL
    • Extension Codes:
      • This is instructing Matrix Airfare Search by ITA Software to search for the Basic Economy fare. Use those dates on Delta and you will be presented with the option to upgrade to the regular economy fare.
  • Destination:  DFW
    • This works both ways, so DFW can be the Origin and SEA can be the Destination
  • Return Advanced Routing Code:
    • Routing Codes: DL
    • Extension Codes:
  • (Click on Advanced Codes link to enable advanced routing code input)
  • Select “See calendar of lowest fares”
  • Duration “3-10” (This is just a sample, you can use any 7 day date range like 3-10, 7-14 etc)
• Beginner’s Guide on How to Use Matrix by ITA Software
• How to Read Airfare Rules and Use It to Your Advantage

• The Matrix Airfare Search by ITA Software search page should be like below when all values are inputted

• You cannot buy tickets using Matrix Airfare Search by ITA Software. To buy, follow our instructions in the “How to Buy” section below.

Fare Class:

• E (Basic Economy)
• V (Regular Economy)

Elite Qualifying Dollars:

Routing:

• SEA – DFW (Dallas) – SEA

Mileage:

• Miles Flown: 3,314 miles or 4.3 cents per mile (Basic Economy) / 7.0 cents per mile (Regular Economy)
• Redeemable Miles: 941 miles

How to Buy:

• Book on Delta with dates found on Matrix Airfare Search by ITA Software.