Delta Flight 621 Deals & Information (2026/2027)

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Delta Flight 621 Route Deals From $204

The cheapest prices found with in the last 7 days for return flights were $342 and $204 for one-way flights to Cancun Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, May 27 - Sat, Jun 6
JFK
John F. Kennedy Intl.
CUN
Cancun Intl.
$342 Roundtrip, found 13 hours ago
$342
Roundtrip
found 13 hours ago
Select Delta flight, departing Wed, May 27 from John F. Kennedy Intl. to Cancun Intl., returning Sat, Jun 6, priced at $342 found 13 hours ago
Sun, May 24 - Fri, May 29
JFK
John F. Kennedy Intl.
CUN
Cancun Intl.
$344 Roundtrip, found 13 hours ago
$344
Roundtrip
found 13 hours ago
Select Delta flight, departing Sun, May 24 from John F. Kennedy Intl. to Cancun Intl., returning Fri, May 29, priced at $344 found 13 hours ago
Wed, Jul 22 - Mon, Jul 27
JFK
John F. Kennedy Intl.
CUN
Cancun Intl.
$359 Roundtrip, found 7 hours ago
$359
Roundtrip
found 7 hours ago
Select Delta flight, departing Wed, Jul 22 from John F. Kennedy Intl. to Cancun Intl., returning Mon, Jul 27, priced at $359 found 7 hours ago
Fri, Aug 28 - Mon, Aug 31
JFK
John F. Kennedy Intl.
CUN
Cancun Intl.
$369 Roundtrip, found 9 hours ago
$369
Roundtrip
found 9 hours ago
Select Delta flight, departing Fri, Aug 28 from John F. Kennedy Intl. to Cancun Intl., returning Mon, Aug 31, priced at $369 found 9 hours ago

Frequently asked questions

What route does flight number DL621 take?
DL621 operates from JFK to Cancun Intl. Airport (CUN) and is a direct flight. This journey takes 4 hours and 1 minute.
What terminal does DL621 fly out of?
You'll likely be boarding the plane from Terminal 4 if you're booked on flight DL621 direct from JFK to CUN.
What kind of plane is on flight number DL621?
There's a good chance you'll find yourself jumping on board the Boeing 737-900 if you have a seat on flight DL621. This flight usually leaves from New York, NY Airport (JFK-John F. Kennedy Intl.) and comes in to land at Cancun Intl. Airport (CUN).
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 DL621 flight with Travelocity, please visit our Customer Service Portal.