United Flight WN3861 Deals & Information (2025/2026)

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United Flight 3861 Route Deals From $95

The cheapest prices found with in the last 7 days for return flights were $186 and $95 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 13 - Fri, Sep 19
BOI
Boise
DEN
Denver Intl.
$186 Roundtrip, found 3 hours ago
$186
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Sep 13 from Boise to Denver Intl., returning Fri, Sep 19, priced at $186 found 3 hours ago
Sat, Oct 18 - Mon, Oct 20
BOI
Boise
DEN
Denver Intl.
$189 Roundtrip, found 1 hour ago
$189
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Oct 18 from Boise to Denver Intl., returning Mon, Oct 20, priced at $189 found 1 hour ago

Frequently asked questions

What route does flight number UA3861 take?
UA3861 is used on multiple routes. Most commonly, UA3861 flies direct from O'Hare Intl. Airport (ORD) to Duluth Intl. Airport (DLH). If this is your route, you'll be traveling for roughly 1 hour and 41 minutes.
What terminal does UA3861 fly out of?
Terminal 2 is where you'll likely board from if you're booked on a flight out of O'Hare Intl. Airport (ORD). Chicago, IL Airport (ORD-O'Hare Intl.) to Duluth Intl. Airport is the most commonly traveled route for flight number UA3861.
What kind of plane is on flight number UA3861?
If you've booked a seat on flight UA3861 from ORD to Duluth, MN Airport (DLH-Duluth Intl.), there's every chance you'll be jetting off on the Bombardier CRJ. Flight UA3861 serves more than one route, but this is the busiest.
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 UA3861 flight with Travelocity, please visit our Customer Service Portal.