Delta Flight 3657 Deals & Information (2025/2026)

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Delta Flight 3657 Route Deals From $184

The cheapest prices found with in the last 7 days for return flights were $239 and $184 for one-way flights to John Glenn Columbus Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What route does flight number DL3657 take?
DL3657 takes numerous routes. The most frequently flown is San Jose Intl. Airport to Sea-Tac Airport, which is a direct flight. This service usually takes 2 hours and 25 minutes. That said, there may possibly be other flights with this number that are multi-stop.
How often is DL3657 on time?
If you're taking to the skies with Delta flight number DL3657 from Norman Y. Mineta San Jose Intl. Airport (SJC) to Sea-Tac Airport, it's good to know that their flights arrive as scheduled 88% of the time. On the rare occasion that a flight is later than scheduled, it will be delayed on average by 18 minutes. Thanks to their quality of service, this journey has a 4-star rating.
What terminal does DL3657 fly out of?
DL3657 flights from SJC usually depart from Terminal A. This flight number runs on a number of different routes, but the most frequented is SJC to Seattle, WA Airport (SEA-Seattle - Tacoma Intl.).
What kind of plane is on flight number DL3657?
DL3657 is a flight number that's used on many routes. If you've booked a seat on the most common route, San Jose Intl. Airport to Sea-Tac Airport, there's a good chance you'll be climbing aboard an Embraer 175.
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 DL3657 flight with Travelocity, please visit our Customer Service Portal.