Delta Flight 3509 Deals & Information (2025/2026)

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Delta Flight 3509 Route Deals From $133

The cheapest prices found with in the last 7 days for return flights were $209 and $133 for one-way flights to Buffalo Niagara Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 9 - Mon, May 12
DTW
Detroit Metropolitan Wayne County
BUF
Buffalo Niagara Intl.
$209 Roundtrip, found 1 day ago
$209
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, May 9 from Detroit Metropolitan Wayne County to Buffalo Niagara Intl., returning Mon, May 12, priced at $209 found 1 day ago
Tue, Mar 11 - Wed, Mar 12
DTW
Detroit Metropolitan Wayne County
BUF
Buffalo Niagara Intl.
$218 Roundtrip, found 1 day ago
$218
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Mar 11 from Detroit Metropolitan Wayne County to Buffalo Niagara Intl., returning Wed, Mar 12, priced at $218 found 1 day ago

More Delta Flight For This Route

CarrierFlightDepart DTWArrive BUFSun
2/23		Mon
2/24		Tue
2/25		Wed
2/26		Thu
2/27		Fri
2/28		Sat
3/1		Stops
DL351110:03 am11:20 am
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DL486503:55 pm05:06 pm
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DL222009:50 pm11:01 pm
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Frequently asked questions

What route does flight number DL3509 take?
DL3509 flies directly between Seattle - Tacoma Intl. Airport (SEA) and John Wayne Airport in 2 hours and 55 minutes. It can sometimes take other routes though, some of which could be multi-stop trips. Keep this in mind when booking your airfare to avoid any mix-ups.
What kind of plane is on flight number DL3509?
There’s every chance you’ll be boarding the Embraer 175 if you’ve booked a fare from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to John Wayne Airport (SNA), a common route for flight DL3509.
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 DL3509 flight with Travelocity, please visit our Customer Service Portal.