Delta Flight 604 Deals & Information (2026/2027)

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Delta Flight 604 Route Deals From $366

The cheapest prices found with in the last 7 days for return flights were $708 and $366 for one-way flights to Seattle - Tacoma Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Dec 22 - Tue, Jan 5
CUN
Cancun Intl.
SEA
Seattle - Tacoma Intl.
$708 Roundtrip, found 2 days ago
$708
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Dec 22 from Cancun Intl. to Seattle - Tacoma Intl., returning Tue, Jan 5, priced at $708 found 2 days ago
Tue, Dec 22 - Tue, Jan 5
CUN
Cancun Intl.
SEA
Seattle - Tacoma Intl.
$718 Roundtrip, found 2 days ago
$718
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Dec 22 from Cancun Intl. to Seattle - Tacoma Intl., returning Tue, Jan 5, priced at $718 found 2 days ago

Frequently asked questions

What route does flight number DL604 take?
You'll be landing into Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) from CUN if you've booked a ticket on flight number DL604. You'll be airborne for 6 hours and 12 minutes on this trip. It's also worthwhile noting that it conveniently operates non-stop.
What terminal does DL604 fly out of?
You'll likely be taking off from Terminal 3 if you're booked on flight DL604 direct from CUN to SEA.
What kind of plane is on flight number DL604?
The route for DL604 is most commonly Cancun Intl. Airport (CUN) to Seattle, WA Airport (SEA-Seattle - Tacoma Intl.), and the Boeing 737-800 is the type of plane you're likely to be traveling aboard.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your DL604 flight with Travelocity, please visit our Customer Service Portal.