Delta Flight 3673 Deals & Information (2026/2027)

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Delta Flight 3673 Route Deals From $156

The cheapest prices found with in the last 7 days for return flights were $253 and $156 for one-way flights to Los Angeles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Jun 5 - Mon, Jun 8
BOI
Boise
LAX
Los Angeles Intl.
$253 Roundtrip, found 5 days ago
$253
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Jun 5 from Boise to Los Angeles Intl., returning Mon, Jun 8, priced at $253 found 5 days ago
Fri, Jun 5 - Mon, Jun 8
BOI
Boise
LAX
Los Angeles Intl.
$263 Roundtrip, found 5 days ago
$263
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Jun 5 from Boise to Los Angeles Intl., returning Mon, Jun 8, priced at $263 found 5 days ago
Sat, Oct 24 - Sun, Nov 1
BOI
Boise
LAX
Los Angeles Intl.
$307 Roundtrip, just found
$307
Roundtrip
just found
Select Delta flight, departing Sat, Oct 24 from Boise to Los Angeles Intl., returning Sun, Nov 1, priced at $307 just found

Frequently asked questions

What route does flight number DL3673 take?
DL3673 takes a few routes. The most popular is between Ontario Airport and Sea-Tac Airport, which is a direct flight. This flight takes around 2 hours and 46 minutes. However, there may be other flights with this number that have one or more stops.
How often is DL3673 on time?
Delta flight number DL3673 from ONT to Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) arrives on schedule 98% of the time, so you can relax knowing you will get to your destination ASAP. When it is running behind schedule, the average delay time is 9 minutes. This flight has a 4.85-star rating.
What terminal does DL3673 fly out of?
You'll most likely board from Terminal 2 if you're flying out of Ontario Airport. DL3673 serves a variety of routes, but the direct flight between ONT and Sea-Tac Airport is the most frequently traveled one.
What kind of plane is on flight number DL3673?
If you're taking flight DL3673 from Los Angeles - Ontario Intl. Airport (ONT) to Seattle, WA Airport (SEA-Seattle - Tacoma Intl.), there's a strong chance you'll be aboard the Embraer 175. Flight DL3673 serves several routes, but this is the most common one.
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 DL3673 flight with Travelocity, please visit our Customer Service Portal.